Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4074785B2 - Optical coupling parts - Google Patents
[go: Go Back, main page]

JP4074785B2 - Optical coupling parts - Google Patents

Optical coupling parts Download PDF

Info

Publication number
JP4074785B2
JP4074785B2 JP2002198655A JP2002198655A JP4074785B2 JP 4074785 B2 JP4074785 B2 JP 4074785B2 JP 2002198655 A JP2002198655 A JP 2002198655A JP 2002198655 A JP2002198655 A JP 2002198655A JP 4074785 B2 JP4074785 B2 JP 4074785B2
Authority
JP
Japan
Prior art keywords
resin
molding
optical coupling
antifungal
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2002198655A
Other languages
Japanese (ja)
Other versions
JP2004038090A (en
Inventor
継男 佐藤
潔 車田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seikoh Giken Co Ltd
Original Assignee
Seikoh Giken Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seikoh Giken Co Ltd filed Critical Seikoh Giken Co Ltd
Priority to JP2002198655A priority Critical patent/JP4074785B2/en
Publication of JP2004038090A publication Critical patent/JP2004038090A/en
Application granted granted Critical
Publication of JP4074785B2 publication Critical patent/JP4074785B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Mechanical Coupling Of Light Guides (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、光結合部品に係り、特に防カビ性を付与させた樹脂成形体を含む光結合部品に関する。
【0002】
【従来の技術】
光通信に利用される、光コネクタ、アダプタ、キャップ、ブーツ等の光結合部品は、各部品の機能によって成形材料が異なる。それぞれの光結合部品およびその内の各部分に要求される物性から選択されるポリプロピレン樹脂、ポリ塩化ビニル樹脂等のプラスチック製の各種部品と、SUS等の金属製各種部品とを適宜組み合わせて光結合部品が作製される。
光結合部品に関するJIS或いはベルコア規格では、防カビ性については規定されていなかったため、これらの光結合部品および光結合部品を形成する各種部品については種類や成形材料に関わらず防カビ性は全く考慮されていなかった。
【0003】
【発明が解決しようとする課題】
近年、テルコディア規格の中のGeneral requirements 326 (Title [Generic Requirements for Singlemode Optical Connectors and J-umper Assenblies])の 3.3.1 のMaterials section R3-6 Fungus resistanceでASTM−G21−70によりこれら部品全てにレベル0の防カビ性が規定されるようになった。しかし、プラスチック製の部品に防カビ剤を添加する場合の光結合部品の各種特性への影響、成形条件への影響等は知られていなかった。
従って、本発明の目的は光結合部品のために良好な防カビ剤および成形条件を選択することにより、防カビ性を付与させた光結合部品を提供しようとするものである。
【0004】
【課題を解決するための手段】
すなわち本発明の第1の発明は、少なくとも一部が樹脂成形体からなり、該樹脂成形体は、防カビ剤を含む成形材料が、前記防カビ剤の熱分解温度未満または昇華温度未満で成形されてなる光結合部品を要旨とする。
第1の発明において、防カビ剤が樹脂成形体中1重量%以下であるのが好ましい。
【0005】
本発明の第2の発明は、少なくとも一部が樹脂成形体からなり、該樹脂成形体表面の少なくとも一部を、防カビ剤を含む被膜が被覆している光結合部品を要旨とする。
第2の発明において、上記被膜は、防カビ剤を含むワニスが、防カビ剤の熱分解温度未満または昇華温度未満、かつ樹脂成形体の成形温度未満で硬化されてなるのが好ましい。
【0006】
さらに、上記いずれかの発明において、防カビ剤が有機窒素硫黄化合物を含むのが好ましい。
【0007】
【発明の実施の形態】
本発明の光結合部品は、少なくとも一部が樹脂成形体からなるものであり、樹脂成形体製各種部品の他には、SUS等の金属製各種部品、金属に樹脂をインサート成形した各種部品等を用いることができ、これらの各種部品を組み立てて光コネクタ、アダプタ等の光結合部品が製造される。
図1および図2に、光結合部品であるSCコネクタ組立図の一例の上面(一部断面)図および側面図、およびその部品の上面図を示す。また、図3および図4に、光結合部品であるSCアダプタ組立図の一例の上面(一部断面)図およびその部品の上面図を示す。
光結合部品を構成する各部品の素材は金属、樹脂、金属と樹脂との複合、のいずれでもよく、用途により適宜選択される。例えば、図2のSCコネクタ用ハウジング2、プラグフレーム3、フード6、コネクタキャップ7およびフェルールキャップ8が樹脂成形体で、フェルール1、圧縮コイルばね4およびストップリング5が金属であるのが一般的である。また、図4のSCアダプタ用ハウジング12、スリーブホルダ13およびキャップ15が樹脂成形体で、スリーブ11、プレート14が金属であるのが一般的である。しかし、これに限定されるものではなく、例えばストップリングが、使用するコネクタやアダプタの種類に応じて樹脂成形体であっても良い。
【0008】
表1に、光結合部品中の樹脂成形体からなる部品の例と、その部品の成形材料に用いられることの多い熱可塑性樹脂と、その略称と、その融点または軟化点を示す。
【表1】

Figure 0004074785
【0009】
樹脂成形体に防カビ剤で防カビ性を付与するには、▲1▼予め成形材料に防カビ剤を配合した後、成形して樹脂成形体を得る方法、▲2▼まず樹脂成形体を成形した後、樹脂成形体表面に防カビ剤を含む被膜を被覆させる方法が挙げられる。ただし、上記▲1▼の場合、成形材料の融点または軟化点が防カビ剤の熱分解温度または昇華温度以上である成形材料と防カビ剤との組み合わせは、配合された防カビ剤が成形中に熱で分解または昇華してしまうため適さない。したがって、防カビ剤を上記▲1▼成形材料に配合するか、上記▲2▼樹脂成形体表面に被覆するかは、目的とする樹脂成形体に要求される特性に応じた成形材料および防カビ剤の選択と共に適宜選択する。
【0010】
本発明で用いる成形材料は、第一の発明においては、防カビ剤が昇華または分解を完了しない温度で成形可能であれば特に制限はなく、その中でも特に、熱可塑性樹脂材料が、射出成形等による量産性に優れる点で好ましい。例えば250℃以下で成形できる熱可塑性樹脂材料としては、ポリプロピレン樹脂、ポリ塩化ビニル樹脂、ポリブチレンテルフタレート樹脂、ネオプレンゴム、ポリエチレン樹脂、ポリスチロール樹脂、アイオノマー樹脂、EEA樹脂、AS樹脂、AAS樹脂、ABS樹脂、ACS樹脂、EVA樹脂、GL樹脂、CPE樹脂、ポリアセタール樹脂、ポリブタジエン樹脂等が挙げられ、これらは一種で、または二種以上の混合物で使用できる。
また、本発明の第2の発明については、成形材料に成形温度の上限は特になく、上記に挙げた樹脂材料に加えて、例えば、ポリエーテルイミド樹脂、ポリフェニレンサルファイド樹脂、ポリアミド樹脂、ポリカーボネート樹脂、PET樹脂等が挙げられ、これらの1種または2種以上が使用できる。
【0011】
本発明における防カビ剤は、熱に対して安定なものが好ましく、このような化合物には例えば硫黄を含む化合物が挙げられる。特に第1の発明に用いる防カビ剤は、熱に対する安定性の他、成形材料に練り込むことができることが好ましい。また、第2の発明に用いる防カビ剤は、ワニスに対する相容性、分散性の良いことが好ましい。
【0012】
防カビ剤としては、チアゾール系化合物、トリアゾール系化合物、ベンズイミダゾール系化合物、イミダゾール系化合物、有機尿素系化合物、ハロゲン系化合物、フェノール系化合物、グアニジン系化合物、ピリジン類、アミド系化合物、有機金属系化合物などが挙げられる。具体的には、2−(4−チアゾリル)−ベンズイミダゾール、2,3,5,6−テトラクロル−4−メチルスルホニルピリジン、N−置換ベンズイミダゾリルカルバメート誘導体、α−〔2−(4−クロロフェニル)エチル〕−α−(1,1−ジメチルエチル)−1H−1,2,4−トリアゾール−1−イル−エタノール、ビス(2−ピリジルチオ−1−オキシド)亜鉛塩等が挙げられる。
これらのうち、特にチアジル化合物等の、有機窒素硫黄化合物が、高温安定性及び毒性が低い点で好ましい。例えば、2−(4−チアゾリル)−ベンズイミダゾール(熱分解温度296〜303℃)等が挙げられ、これは、市販品では、例えば北興化学株式会社製商品名ホクスターHP、同社製商品名NEWホクスターE5OAとして入手可能である。有機窒素硫黄化合物の市販品として、他に北興化学株式会社製商品名ホクサイド7400、同社製商品名ホクサイドMC等が挙げられ、同様の防カビ性が得られる。
【0013】
上記防カビ剤は、成形材料中に配合して、および/または樹脂成形体の表面に被覆させて、樹脂成形体に防カビ性を付与させる。
第1の発明における実施形態を以下に例示する。防カビ剤と、該防カビ剤の熱分解温度または昇華温度より低い温度で成形できる成形材料のペレットとを用意し、混合機内で樹脂に対する所定量の防カビ剤を成形材料と混合してまぶした後、射出成形機のホッパに投入して均一に可塑化し、防カビ剤の熱分解温度未満または昇華温度未満、及び所定の圧力で成形して樹脂成形体を作製することができる。
また、防カビ剤を成形材料と混練して中間体である防カビ性ペレットを作製することもできる。
ここで、混合中の防カビ剤の分散性は成形材料の粘度に比例するため、粘度が高いほど防カビ剤の配合量を増やすのが好ましい。また、塩化ビニル樹脂のように、フタル酸エステル等の可塑剤を併用する場合は、可塑剤の移行によって防カビ剤も動くので防カビ剤は少量ですむ。
【0014】
防カビ剤配合量は、樹脂成形体中に0.01〜1重量%が好ましく、より好ましくは0.1〜0.3重量%である。配合量が1重量%より多いと、防カビ剤が樹脂成形体の表面に目視できるほど分散が不均一になったり、樹脂成形体の色調がまばらになったり黄色を帯びたりする傾向がある。一方、配合量が少なすぎると十分な防カビ効果が得られない。樹脂成形体に対する防カビ剤の配合量は、成形前の成形材料に対する防カビ剤の配合量とほぼ同じである。
また、上記成形材料には、必要に応じて分散剤、抗菌剤、帯電防止剤、可塑剤、離型剤、顔料等が、樹脂成形体の特性および本発明の効果を損なわない範囲で、適宜添加されても良い。
【0015】
次に、本発明の第2の発明の実施形態を説明する。
まず、上記で説明したポリエーテルイミド樹脂等から選ばれる成形材料から、射出成形法などの方法により樹脂成形体を作製する。樹脂成形体の作製方法は、防カビ剤を配合しない点および成形温度の上限がない点以外は、第一の発明の実施形態と同様である。
次いで防カビ剤を樹脂成形体の表面の少なくとも一部に被覆させる。ここで、予め防カビ剤をワニスに分散させて防カビ性ワニスとし、この防カビ性ワニスを樹脂成形体の表面に塗装して防カビ性ワニスの塗膜を形成した後、乾燥、硬化させて被膜とするのが、作業性および均一分散性の点で好ましい。
【0016】
防カビ剤が添加される上記ワニスは、防カビ剤の熱分解温度未満または昇華温度未満、かつ樹脂成形体の成形温度未満で硬化して被膜を形成することができればとくに制限はなく、ワニス中の定着剤としては、例えば、ポリウレタン樹脂、ビニル樹脂、アクリル樹脂、アルキッド樹脂、エポキシ樹脂、フェノール樹脂、アミノ樹脂、塩素化ポリオレフィン樹脂、アクリル−シリコーン樹脂、ポリブタジエン樹脂などを主成分とするものが挙げられ、耐久性を考慮するとポリウレタン樹脂またはアクリル−シリコーン樹脂が好ましい。より好ましくは室温〜常温で硬化可能なワニスである。
定着剤は、必要に応じて水又は有機溶剤に溶解され又は分散されてワニスとして用いられる。すなわち、ワニスは、溶液、エマルジョン、サスペンション、ラテックス等の形態を取ることができる。特に、水溶液又はエマルジヨン溶液の水系塗料、硬化後に透明であるワニスが、それぞれ好ましい。
【0017】
防カビ性ワニス中の防カビ剤の配合量は、防カビ剤の被膜厚さにもよるが、防カビ性ワニス中の対樹脂量比で0.01〜1重量%が好ましく、より好ましくは対樹脂量比で0.1〜0.3重量%である。配合量が多すぎる場合、例えば2重量%より多いと被膜が着色する傾向がある。一方、配合量が少なすぎると十分な防カビ性が得られない。
防カビ性ワニスの被膜の厚さは、防カビ性ワニス中の防カビ剤の上記配合量にもよるが、通常、0.25μm以上、好ましくは0.5μmであれば、防カビ剤が被膜中に均一に分散させるために充分である。被膜厚さは塗装回数またはワニス濃度で調節できる。
樹脂成形体への塗装方法としては、スプレー方法、浸漬処理方法、刷毛塗り法、ローラーコーター方式等種々の塗装方法が挙げられる。塗布するのは樹脂成形体の表面の内、全部でも、光結合部品に組み上げた際に露出する部分のみでもよい。
また、上記防カビ性ワニスには、必要に応じて硬化剤、硬化触媒、分散剤、ワニスを調合する際の皮張り防止剤、レベリング剤、消泡剤、造膜助剤、顔料、増粘剤、抗菌剤、帯電防止剤等が、樹脂成形体の特性および本発明の効果を損なわない範囲で、適宜配合されても良い。
【0018】
以上、コネクタ、アダプタを中心に述べたが、本発明は、光結合部品の種類、またその光結合部品を形成する各種部品の種類については特に制限するものではない。
【0019】
【実施例】
(実施例1)
表1に示すようにハウジングやプラグフレームに使われる成形材料としてペレット状の熱可塑性樹脂組成物PBT(ポリブチレンテレフタレート) 99重量部と、防カビ剤として2−(4−チアゾリル)−ベンズイミダゾール(以下、TBZという。)(北興化学工業株式会社製商品名ホクスターHP)1重量部とを混合機内で混合した。この混合材料を射出成形機のホッパに投入し、成形温度260℃、成形圧力80kg/cmで射出成形法によりハウジングおよびプラグフレームを成形した。これら成形品10個を試料として、ASTM−G21−70により、後述する防カビ試験を行った結果、レベル0(試料表面に菌の繁殖は認められない。)であった。
【0020】
(実施例2)
ペレット状の熱可塑性樹脂組成物PP(ポリプロピレン) 99.7重量部と、北興化学株式会社製商品名ホクサイド7400(有機窒素硫黄化合物) 0.3重量部とを混合機内で混合した。この混合材料を射出成形機のホッパに投入し、成形温度180℃、成形圧力80kg/cmで射出成形法によりフェルールキャップおよびアダプタキャップを成形した。これら成形品10個を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、レベル0(試料表面に菌の繁殖は認められない。)であった。
【0021】
(実施例3)
熱可塑性樹脂組成物PVC(ポリ塩化ビニル)99.9重量部と、実施例1で用いた防カビ剤と同じTBZ 0.1重量部とを混合機内で混合した。この混合材料を射出成形機のホッパに投入し、成形温度170℃、成形圧力50kg/cmで射出成形法によりフェルールキャップおよびアダプタキャップを成形した。これら成形品10個を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、レベル0(試料表面に菌の繁殖は認められない。)であった。
【0022】
(実施例4)
成形材料として熱可塑性樹脂組成物NPR(ネオプレンゴム)99.9重量部と、北興化学株式会社製商品名ホクサイドMC(有機窒素硫黄化合物) 0.1重量部とを混合機内で混合した。この混合材料を射出成形機のホッパに投入し、成形温度170℃、成形圧力200kg/cmで射出成形法によりフェルールキャップおよびアダプタキャップを成形した。これら成形品10個を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、レベル0(試料表面に菌の繁殖は認められない。)であった。
【0023】
(実施例5)
成形材料としてPEI(ポリエーテルイミド)を用いて成形温度360℃、成形圧力150kg/cmで射出成形法によりコネクタのハウジングおよびストップリングを成形した。別に、アクリル系透明塗料(和信ペイント株式会社製水溶性つや出しニス)に、TBZと有機硫黄系化合物とを含む防カビ剤(北興化学株式会社製商品名NEWホクスターE5OA)を1重量%添加して防カビ剤の分散ワニスを調製した。このワニスを上記ハウジングおよびストップリング表面にスプレーした後乾燥して厚さ10μmの防カビ剤薄膜を形成した。
これら成形品10個を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、レベル0(試料表面に菌の繁殖は認められない。)であった。
【0024】
(実施例6)
成形材料としてPPS(ポリフェニレンサルファイド)を用いて成形温度331℃、成形圧力180kg/cmで射出成形法によりアダプタのスリーブホルダを成形した。実施例5で用いたのと同じ防カビ剤の分散ワニスを上記スリーブホルダ表面にスプレーした後、乾燥して厚さ10μmの防カビ剤薄膜を形成した。
これら成形品10個を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、レベル0(試料表面に菌の繁殖は認められない。)であった。
【0025】
(比較例1〜4)
防カビ剤を配合しなかった以外は実施例1〜4と同様にして成形した。これら成形品を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、それぞれレベル3、レベル3、レベル3、レベル2であった。
【0026】
(比較例5)
PBT(ポリブチレンテレフタレート)の代わりにPPS(ポリフェニレンサルファイド)を用いた以外は実施例1と同様にして成形した。この比較例5の成形品はいずれも、他の例の成形品と異なり実用に適さないボイドおよび肌あれが表面に観察された。これら成形品10個を試料として実施例1と同様にASTM−G21−70により防カビ試験を行った結果、レベル2であった。
【0027】
(ASTM−G21−70による試験法)
使用した菌は、アスペルギルス・ニゲル、ペニシリウム・フニクロスム、ケトミウム・グロボス、オーレオバシジウム・プルランス、グリオクラジウム・ビレンスの五種類である。
培地は、リン酸二水素カリウム 0.7g、リン酸一水素カリウム 0.7g、硫酸マグネシウム 0.7g、硝酸アンモニウム 1.0g、塩化ナトリウム0.007g、硫酸第一鉄 0.002g、硫酸亜鉛 0.002g、硫酸マンガン 0.001g、寒天 15.0g、精製水 1000ミリリットルの割合で調製した。
栄養液は、上記培地の組成から寒天をのぞいた成分で調製した。
菌の培養方法は、
▲1▼プラスチック製シャーレに培地を一定量分注して平板培地を作製した。
▲2▼試料(光結合部品用樹脂成形体)を平板培地の上に置いた。
▲3▼上記五種類の菌それぞれについて斜面培養器から白金耳により胞子を一定量採取し、スルホコハク酸ジオクチルナトリウムの50ppm水溶液に懸濁させて胞子懸液を調製した。
▲4▼五種類の胞子懸濁液を合わせて混合胞子懸濁液とし、この混合胞子懸濁液を遠沈管内で遠心分離して上澄み液を除去した。
▲5▼遠沈管に減菌精製水を一定量加え、ガラス棒により沈殿した胞子を撹拌し(水洗)、懸濁させた後、遠心分離を行った。
▲6▼この、胞子の遠心分離〜上澄み除去〜水洗操作を計2回行い、さらに3回目の遠心分離を行った。
▲7▼3回目の遠心分離後、上澄み液を除去して遠沈管に上記栄養液を一定量加え、充分撹拌して混合胞子懸濁栄養液を調製した。
▲8▼この混合胞子懸濁栄養液を培地表面に一定量噴霧し、温度28±2℃、相対湿度95%以上の恒温恒湿器に入れて28日間菌を培養した。
▲9▼観察は倍率10倍の顕微鏡を用いて試料表面を観察し、次の五段階で評価した。
レベル0;試料表面に菌の繁殖は認められない。
レベル1;試料表面に繁殖した菌は表面積の10%未満であった。
レベル2;試料表面に繁殖した菌は表面積の10〜30%であった。
レベル3;試料表面に繁殖した菌は表面積の30〜60%であった。
レベル4;試料表面に繁殖した菌は表面積の60〜100%であった。
【0028】
【発明の効果】
本発明によれば、光結合部品内の樹脂成形体のカビの発生を防止して光通信システムの信頼性を向上させることができる。
【図面の簡単な説明】
【図1】光結合部品のSCコネクタ組立図の一例の上面(一部断面)図および側面図である。
【図2】図1のSCコネクタの部品の上面図である。
【図3】光結合部品のSCアダプタ組立図の一例の上面(一部断面)図である。
【図4】図3のSCアダプタの部品の上面図である。
【符号の説明】
1 フェルール 2 SCコネクタ用ハウジング 3 プラグフレーム
4 圧縮コイルばね 5 ストップリング 6 フード
7 コネクタキャップ 8 フェルールキャップ
11 スリーブ 12 SCアダプタ用ハウジング 13 スリーブホルダ
14 プレート 14a 仮ばね 15 キャップ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical coupling component, and more particularly to an optical coupling component including a resin molded body imparted with an antifungal property.
[0002]
[Prior art]
Optical coupling components such as optical connectors, adapters, caps, and boots used for optical communication differ in molding material depending on the function of each component. Optical coupling by appropriately combining various plastic parts such as polypropylene resin and polyvinyl chloride resin selected from the physical properties required for each optical coupling part and each part, and various metal parts such as SUS A part is produced.
In JIS or Bellcore standards for optical coupling parts, antifungal properties were not stipulated. Therefore, these optical coupling components and various components forming optical coupling components were completely considered regardless of the type and molding material. Was not.
[0003]
[Problems to be solved by the invention]
In recent years, according to ASTM-G21-70, all of these parts are in accordance with ASTM-G21-70 in 3.3.1 Materials section R3-6 Fungus resistance of General requirements 326 (Title [Generic Requirements for Singlemode Optical Connectors and J-umper Assenblies]) in the Telcodia standard. Antifungal property of 0 came to be specified. However, the effects on various properties of optical coupling parts and the molding conditions when adding a fungicide to plastic parts have not been known.
Accordingly, an object of the present invention is to provide an optical coupling component imparted with an antifungal property by selecting a good antifungal agent and molding conditions for the optical coupling component.
[0004]
[Means for Solving the Problems]
That is, according to the first aspect of the present invention, at least a part is formed of a resin molded body, and the resin molded body is molded at a molding material containing an antifungal agent at a temperature lower than the thermal decomposition temperature or sublimation temperature of the antifungal agent. The gist of the optical coupling component is as follows.
In the first invention, the fungicide is preferably 1% by weight or less in the resin molded body.
[0005]
The gist of the second invention of the present invention is an optical coupling component in which at least a part is made of a resin molded body, and at least a part of the surface of the resin molded body is coated with a film containing an antifungal agent.
In the second invention, the coating is preferably formed by curing a varnish containing a fungicide at a temperature lower than the thermal decomposition temperature or sublimation temperature of the fungicide and less than a molding temperature of the resin molding.
[0006]
Furthermore, in any one of the above-mentioned inventions, the fungicide preferably contains an organic nitrogen sulfur compound.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The optical coupling component of the present invention is at least partially made of a resin molded body. In addition to various parts made of resin molded bodies, various parts made of metal such as SUS, various parts obtained by insert molding resin into metal, etc. These various components are assembled to produce optical coupling components such as optical connectors and adapters.
FIG. 1 and FIG. 2 are a top view (partial cross section) and a side view of an example of an SC connector assembly diagram that is an optical coupling component, and a top view of the component. 3 and 4 show a top view (partial cross section) of an example of an SC adapter assembly diagram as an optical coupling component and a top view of the component.
The material of each component constituting the optical coupling component may be any of metal, resin, and composite of metal and resin, and is appropriately selected depending on the application. For example, the SC connector housing 2, the plug frame 3, the hood 6, the connector cap 7 and the ferrule cap 8 in FIG. 2 are generally resin molded bodies, and the ferrule 1, the compression coil spring 4 and the stop ring 5 are generally metal. It is. Further, the SC adapter housing 12, the sleeve holder 13 and the cap 15 shown in FIG. 4 are generally a resin molded body, and the sleeve 11 and the plate 14 are generally made of metal. However, it is not limited to this, For example, a stop ring may be a resin molding according to the kind of connector and adapter to be used.
[0008]
Table 1 shows an example of a part made of a resin molded body in an optical coupling part, a thermoplastic resin often used as a molding material for the part, its abbreviation, and its melting point or softening point.
[Table 1]
Figure 0004074785
[0009]
In order to impart antifungal properties to a resin molded body with a fungicide, (1) a method in which a mold preventive agent is mixed in advance with a molding material and then molded to obtain a resin molded body; (2) First, a resin molded body is formed. Examples of the method include a method of coating the surface of the resin molded body with a film containing an antifungal agent after the molding. However, in the case of the above (1), the combination of the molding material and the antifungal agent in which the melting point or softening point of the molding material is equal to or higher than the thermal decomposition temperature or sublimation temperature of the antifungal agent, It is not suitable because it decomposes or sublimes with heat. Therefore, whether to add the antifungal agent to the above (1) molding material or to cover the above (2) resin molding surface, the molding material and mold prevention according to the characteristics required for the target resin molding. It selects suitably with selection of an agent.
[0010]
In the first invention, the molding material used in the present invention is not particularly limited as long as the mold preventive agent can be molded at a temperature at which the sublimation or decomposition is not completed, and in particular, the thermoplastic resin material is injection molding or the like. It is preferable in that it is excellent in mass productivity. For example, as a thermoplastic resin material that can be molded at 250 ° C. or less, polypropylene resin, polyvinyl chloride resin, polybutylene terephthalate resin, neoprene rubber, polyethylene resin, polystyrene resin, ionomer resin, EEA resin, AS resin, AAS resin, ABS resin, ACS resin, EVA resin, GL resin, CPE resin, polyacetal resin, polybutadiene resin and the like can be mentioned, and these can be used alone or in a mixture of two or more.
For the second invention of the present invention, the molding material has no particular upper limit of molding temperature. In addition to the resin materials listed above, for example, polyetherimide resin, polyphenylene sulfide resin, polyamide resin, polycarbonate resin, PET resin etc. are mentioned, These 1 type (s) or 2 or more types can be used.
[0011]
The antifungal agent in the present invention is preferably one that is stable to heat, and examples of such a compound include compounds containing sulfur. In particular, the antifungal agent used in the first invention is preferably kneaded into a molding material in addition to stability to heat. Further, the antifungal agent used in the second invention preferably has good compatibility with varnish and good dispersibility.
[0012]
Antifungal agents include thiazole compounds, triazole compounds, benzimidazole compounds, imidazole compounds, organic urea compounds, halogen compounds, phenol compounds, guanidine compounds, pyridines, amide compounds, organometallic compounds. Compound etc. are mentioned. Specifically, 2- (4-thiazolyl) -benzimidazole, 2,3,5,6-tetrachloro-4-methylsulfonylpyridine, N-substituted benzimidazolyl carbamate derivatives, α- [2- (4-chlorophenyl) Ethyl] -α- (1,1-dimethylethyl) -1H-1,2,4-triazol-1-yl-ethanol, bis (2-pyridylthio-1-oxide) zinc salt, and the like.
Of these, organic nitrogen sulfur compounds such as thiazyl compounds are particularly preferred because of high temperature stability and low toxicity. For example, 2- (4-thiazolyl) -benzimidazole (thermal decomposition temperature: 296 to 303 ° C.) and the like are commercially available products, for example, Hokuster HP trade name manufactured by Hokuko Chemical Co., Ltd. Available as E5OA. Other commercially available products of organic nitrogen sulfur compounds include Hokuside 7400, manufactured by Hokuko Chemical Co., Ltd., and Hokuside MC, manufactured by the same company, and the same antifungal property is obtained.
[0013]
The above-mentioned antifungal agent is blended in the molding material and / or coated on the surface of the resin molding to impart antifungal properties to the resin molding.
Embodiments in the first invention are exemplified below. Prepare an antifungal agent and a pellet of a molding material that can be molded at a temperature lower than the thermal decomposition temperature or sublimation temperature of the antifungal agent, and mix a predetermined amount of the antifungal agent for the resin with the molding material in a mixer. Thereafter, it is put into a hopper of an injection molding machine and plasticized uniformly, and molded at a temperature lower than the thermal decomposition temperature or sublimation temperature of the fungicide and at a predetermined pressure, so that a resin molded body can be produced.
Further, an antifungal pellet as an intermediate can be prepared by kneading an antifungal agent with a molding material.
Here, since the dispersibility of the fungicide during mixing is proportional to the viscosity of the molding material, it is preferable to increase the blending amount of the fungicide as the viscosity increases. In addition, when a plasticizer such as a phthalate ester is used in combination with a plasticizer such as a vinyl chloride resin, the amount of the moldproofing agent is small because the moldproofing agent moves by the migration of the plasticizer.
[0014]
As for the compounding quantity of a fungicide, 0.01 to 1 weight% is preferable in a resin molding, More preferably, it is 0.1 to 0.3 weight%. If the blending amount is more than 1% by weight, the antifungal agent tends to be non-uniformly dispersed so that it can be visually observed on the surface of the resin molded body, or the resin molded body tends to be sparse or yellowish. On the other hand, if the amount is too small, a sufficient antifungal effect cannot be obtained. The compounding amount of the antifungal agent with respect to the resin molded body is substantially the same as the compounding amount of the antifungal agent with respect to the molding material before molding.
Further, in the molding material, a dispersant, an antibacterial agent, an antistatic agent, a plasticizer, a release agent, a pigment, and the like as appropriate are appropriately selected within a range that does not impair the characteristics of the resin molded body and the effects of the present invention. It may be added.
[0015]
Next, an embodiment of the second invention of the present invention will be described.
First, a resin molding is produced from a molding material selected from the polyetherimide resin described above by a method such as an injection molding method. The method for producing the resin molded body is the same as that of the embodiment of the first invention except that the mold preventive agent is not blended and there is no upper limit of the molding temperature.
Next, an antifungal agent is coated on at least a part of the surface of the resin molded body. Here, an antifungal agent is dispersed in the varnish in advance to form an antifungal varnish, and this antifungal varnish is coated on the surface of the resin molded body to form a coating film of the antifungal varnish, followed by drying and curing. From the viewpoint of workability and uniform dispersibility, it is preferable to form a film.
[0016]
The above varnish to which an antifungal agent is added is not particularly limited as long as it can be cured at a temperature lower than the thermal decomposition temperature or sublimation temperature of the antifungal agent and lower than the molding temperature of the resin molding to form a film. Examples of the fixing agent include those mainly composed of polyurethane resin, vinyl resin, acrylic resin, alkyd resin, epoxy resin, phenol resin, amino resin, chlorinated polyolefin resin, acrylic-silicone resin, polybutadiene resin, and the like. In view of durability, polyurethane resin or acrylic-silicone resin is preferable. More preferably, it is a varnish curable at room temperature to room temperature.
The fixing agent is dissolved or dispersed in water or an organic solvent as necessary and used as a varnish. That is, the varnish can take the form of a solution, emulsion, suspension, latex, and the like. In particular, water-based paints of aqueous solutions or emulsion solutions and varnishes that are transparent after curing are preferred.
[0017]
The compounding amount of the antifungal agent in the antifungal varnish is preferably 0.01 to 1% by weight, more preferably in terms of the resin amount ratio in the antifungal varnish, although it depends on the film thickness of the antifungal varnish. It is 0.1 to 0.3% by weight with respect to the amount of resin. When there are too many compounding quantities, for example, when more than 2 weight%, there exists a tendency for a film to color. On the other hand, if the amount is too small, sufficient antifungal properties cannot be obtained.
The thickness of the antifungal varnish coating depends on the above-mentioned blending amount of the antifungal agent in the antifungal varnish, but is usually 0.25 μm or more, preferably 0.5 μm. Sufficient to disperse uniformly in the medium. The film thickness can be adjusted by the number of coatings or the varnish concentration.
Various coating methods such as a spray method, a dipping treatment method, a brush coating method, and a roller coater method can be used as a coating method on the resin molded body. The entire surface of the resin molding may be applied, or only the portion exposed when assembled on the optical coupling component may be applied.
In addition, the above antifungal varnish includes a curing agent, a curing catalyst, a dispersing agent, a skinning prevention agent, a leveling agent, an antifoaming agent, a film-forming aid, a pigment, a thickening agent, as needed. An agent, an antibacterial agent, an antistatic agent, and the like may be appropriately blended within a range that does not impair the properties of the resin molded body and the effects of the present invention.
[0018]
As described above, the connector and the adapter have been mainly described. However, the present invention is not particularly limited with respect to the type of the optical coupling component and the types of various components forming the optical coupling component.
[0019]
【Example】
Example 1
As shown in Table 1, 99 parts by weight of a pellet-shaped thermoplastic resin composition PBT (polybutylene terephthalate) as a molding material used for a housing or a plug frame, and 2- (4-thiazolyl) -benzimidazole ( Hereinafter, it is referred to as TBZ.) (1 part by weight of Hokuster HP, manufactured by Hokuko Chemical Co., Ltd.) was mixed in a mixer. This mixed material was put into a hopper of an injection molding machine, and a housing and a plug frame were molded by an injection molding method at a molding temperature of 260 ° C. and a molding pressure of 80 kg / cm 2 . As a result of performing an antifungal test described later by ASTM-G21-70 using 10 of these molded articles as samples, it was Level 0 (no bacterial growth was observed on the sample surface).
[0020]
(Example 2)
99.7 parts by weight of a pellet-shaped thermoplastic resin composition PP (polypropylene) and 0.3 parts by weight of Hokuside 7400 (organic nitrogen sulfur compound) manufactured by Hokuko Chemical Co., Ltd. were mixed in a mixer. This mixed material was put into a hopper of an injection molding machine, and a ferrule cap and an adapter cap were molded by an injection molding method at a molding temperature of 180 ° C. and a molding pressure of 80 kg / cm 2 . As a result of performing a mold prevention test using ASTM-G21-70 in the same manner as in Example 1 using 10 of these molded articles as samples, it was Level 0 (no bacterial growth was observed on the sample surface).
[0021]
(Example 3)
99.9 parts by weight of the thermoplastic resin composition PVC (polyvinyl chloride) and 0.1 part by weight of TBZ which is the same as the fungicide used in Example 1 were mixed in a mixer. This mixed material was put into a hopper of an injection molding machine, and a ferrule cap and an adapter cap were molded by an injection molding method at a molding temperature of 170 ° C. and a molding pressure of 50 kg / cm 2 . As a result of performing a mold prevention test using ASTM-G21-70 in the same manner as in Example 1 using 10 of these molded articles as samples, it was Level 0 (no bacterial growth was observed on the sample surface).
[0022]
Example 4
As a molding material, 99.9 parts by weight of a thermoplastic resin composition NPR (neoprene rubber) and 0.1 part by weight of Hokuside MC (organic nitrogen sulfur compound) manufactured by Hokuko Chemical Co., Ltd. were mixed in a mixer. This mixed material was put into a hopper of an injection molding machine, and a ferrule cap and an adapter cap were molded by an injection molding method at a molding temperature of 170 ° C. and a molding pressure of 200 kg / cm 2 . As a result of performing a mold prevention test using ASTM-G21-70 in the same manner as in Example 1 using 10 of these molded articles as samples, it was Level 0 (no bacterial growth was observed on the sample surface).
[0023]
(Example 5)
Using PEI (polyetherimide) as a molding material, a connector housing and a stop ring were molded by an injection molding method at a molding temperature of 360 ° C. and a molding pressure of 150 kg / cm 2 . Separately, 1% by weight of an antifungal agent (trade name NEW Hokustar E5OA, manufactured by Hokuko Chemical Co., Ltd.) containing TBZ and an organic sulfur compound is added to an acrylic transparent paint (water-soluble glossy varnish manufactured by Washin Paint Co., Ltd.) An antifungal agent dispersion varnish was prepared. This varnish was sprayed on the surface of the housing and the stop ring and then dried to form a 10-μm thick antifungal agent thin film.
As a result of performing a mold prevention test using ASTM-G21-70 in the same manner as in Example 1 using 10 of these molded articles as samples, it was Level 0 (no bacterial growth was observed on the sample surface).
[0024]
(Example 6)
An adapter sleeve holder was molded by injection molding using PPS (polyphenylene sulfide) as a molding material at a molding temperature of 331 ° C. and a molding pressure of 180 kg / cm 2 . The same antifungal dispersion varnish as used in Example 5 was sprayed on the surface of the sleeve holder and then dried to form a 10 μm thick antifungal agent thin film.
As a result of performing a mold prevention test using ASTM-G21-70 in the same manner as in Example 1 using 10 of these molded articles as samples, it was Level 0 (no bacterial growth was observed on the sample surface).
[0025]
(Comparative Examples 1-4)
It shape | molded like Example 1-4 except not having mix | blended the fungicide. Using these molded products as samples, the mold prevention test was conducted by ASTM-G21-70 in the same manner as in Example 1. As a result, they were Level 3, Level 3, Level 3, and Level 2, respectively.
[0026]
(Comparative Example 5)
Molding was performed in the same manner as in Example 1 except that PPS (polyphenylene sulfide) was used instead of PBT (polybutylene terephthalate). In each of the molded products of Comparative Example 5, unlike the molded products of other examples, voids and rough skin that were not suitable for practical use were observed on the surface. As a result of performing a mold prevention test by ASTM-G21-70 in the same manner as in Example 1 using 10 of these molded articles as samples, it was Level 2.
[0027]
(Test method according to ASTM-G21-70)
There are five types of bacteria used: Aspergillus niger, Penicillium funiculosum, Ketomium globos, Aureobasidium pullulans, and Glyocradium bilens.
The medium is 0.7 g of potassium dihydrogen phosphate, 0.7 g of potassium monohydrogen phosphate, 0.7 g of magnesium sulfate, 1.0 g of ammonium nitrate, 0.007 g of sodium chloride, 0.002 g of ferrous sulfate, and zinc sulfate. 002 g, manganese sulfate 0.001 g, agar 15.0 g, and purified water 1000 ml.
The nutrient solution was prepared from components of the above medium except for agar.
The fungus culture method is
{Circle around (1)} A plate medium was prepared by dispensing a certain amount of a medium into a plastic petri dish.
(2) A sample (resin molded body for optical coupling component) was placed on a plate medium.
{Circle around (3)} A spore suspension was prepared by collecting a certain amount of spores from a slant incubator for each of the above five types of bacteria with a platinum loop and suspending them in a 50 ppm aqueous solution of dioctyl sodium sulfosuccinate.
(4) The five types of spore suspensions were combined to form a mixed spore suspension, and the mixed spore suspension was centrifuged in a centrifuge tube to remove the supernatant.
(5) A certain amount of sterilized purified water was added to the centrifuge tube, and the spore precipitated with a glass rod was stirred (washed with water), suspended, and then centrifuged.
{Circle around (6)} The spore centrifugation, supernatant removal, and water washing operation were performed twice in total, followed by a third centrifugation.
(7) After the third centrifugation, the supernatant was removed, and a certain amount of the above nutrient solution was added to the centrifuge tube, and stirred well to prepare a mixed spore suspension nutrient solution.
(8) A predetermined amount of this mixed spore suspension nutrient solution was sprayed on the surface of the medium, and placed in a constant temperature and humidity chamber with a temperature of 28 ± 2 ° C. and a relative humidity of 95% or more, and the bacteria were cultured for 28 days.
{Circle around (9)} The observation was made by observing the surface of the sample using a microscope with a magnification of 10 ×, and evaluated in the following five stages.
Level 0: No growth of bacteria on the sample surface.
Level 1: The bacteria that propagated on the sample surface were less than 10% of the surface area.
Level 2: Bacteria propagated on the sample surface was 10 to 30% of the surface area.
Level 3: The bacteria that propagated on the sample surface were 30 to 60% of the surface area.
Level 4: Bacteria propagated on the sample surface was 60 to 100% of the surface area.
[0028]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of the mold | fungi of the resin molding in an optical coupling component can be prevented, and the reliability of an optical communication system can be improved.
[Brief description of the drawings]
FIG. 1 is a top view (partially cross-sectional view) and a side view of an example of an SC connector assembly diagram of an optical coupling component.
2 is a top view of parts of the SC connector of FIG. 1. FIG.
FIG. 3 is a top view (partial cross-sectional view) of an example of an SC adapter assembly drawing of an optical coupling component.
4 is a top view of parts of the SC adapter of FIG. 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ferrule 2 SC connector housing 3 Plug frame 4 Compression coil spring 5 Stop ring 6 Hood 7 Connector cap 8 Ferrule cap 11 Sleeve 12 SC adapter housing 13 Sleeve holder 14 Plate 14a Temporary spring 15 Cap

Claims (2)

少なくとも一部が熱可塑性樹脂からなる成形体からなり、該成形体表面の少なくとも一部、防カビ剤を含む被膜被覆されている光結合部品であって、前記被膜は、予め対樹脂量比で0.01〜1重量%の前記防カビ剤をワニス中に分散させた防カビ性ワニスを、前記成形体表面の少なくとも一部に塗装して硬化させて得られる、厚さ0.25μm以上の被膜であることを特徴とする光結合部品At least a portion is a molded product made of a thermoplastic resin, at least a portion of the molded product surface, an optical coupling component are coated with a coating comprising fungicide, the film is preliminarily to resin weight A thickness of 0.25 μm obtained by coating and curing at least a part of the surface of the molded body with an antifungal varnish in which 0.01 to 1% by weight of the antifungal agent is dispersed in the varnish. An optical coupling component having the above-described coating . 防カビ剤が有機窒素硫黄化合物を含む請求項記載の光結合部品。Optical coupling component according to claim 1, wherein antifungal agent comprises an organic nitrogen-sulfur compounds.
JP2002198655A 2002-07-08 2002-07-08 Optical coupling parts Expired - Fee Related JP4074785B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002198655A JP4074785B2 (en) 2002-07-08 2002-07-08 Optical coupling parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002198655A JP4074785B2 (en) 2002-07-08 2002-07-08 Optical coupling parts

Publications (2)

Publication Number Publication Date
JP2004038090A JP2004038090A (en) 2004-02-05
JP4074785B2 true JP4074785B2 (en) 2008-04-09

Family

ID=31706050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002198655A Expired - Fee Related JP4074785B2 (en) 2002-07-08 2002-07-08 Optical coupling parts

Country Status (1)

Country Link
JP (1) JP4074785B2 (en)

Also Published As

Publication number Publication date
JP2004038090A (en) 2004-02-05

Similar Documents

Publication Publication Date Title
US20060223962A1 (en) Method of creating a solvent-free polymeric silicon-containing quaternary ammonium antimicrobial agent having superior sustained antimicrobial properties
JPH07300401A (en) Non-sensitized biocidal composition and method for producing the same
DE2408192B2 (en) Polymers containing fillers with an antimicrobial effect
CN102137665B (en) Synergistic antimicrobial mixtures
US10975260B2 (en) Monomers, polymers and coating formulations that comprise at least one N-halamine precursor, a cationic center and a coating incorporation group
CN103897538A (en) Protective water-based antibacterial mould-proof coating and preparation method thereof
TW201712077A (en) Antibacterial and mildewproof surface coating and preparation method thereof
JPH06305906A (en) Antibacterial material, antibacterial resin composition, antibacterial synthetic fiber, paper having antibacterial property, antibacterial coating and cosmetic and production of antibacterial material
JP3526661B2 (en) Antibacterial agent, antibacterial resin and antibacterial paint
JP4074785B2 (en) Optical coupling parts
US3817761A (en) Mildewcide for paint
KR102054685B1 (en) Encapsulated actives
PL160910B1 (en) Antimicrobial agent PL PL PL PL
JP3688040B2 (en) Antibacterial agent
US3817760A (en) Mildewcide for paint
JP5748971B2 (en) Aqueous disinfection and antibacterial composition
CN116444744B (en) Antibacterial and antifouling additive, preparation method thereof, coating composition and plastic packaging product
US20050049224A1 (en) Antimicrobial mixtures comprising iodopropynyl compounds and dimethyldithiocarbamate derivatives
RU2180907C2 (en) Epoxide coating composition
JP3475209B2 (en) Antibacterial material, antibacterial resin composition, antibacterial synthetic fiber, antibacterial paper, antibacterial paint, cosmetic, and method for producing antibacterial material
US3817762A (en) Mildewcide for paint
JP3060786B2 (en) Antimicrobial resin composition
JP2002179514A (en) Antifungal agent, method of producing the same and antifungal resin composition
JPH11263703A (en) Antibacterial agent and antibacterial resin composition
US3139350A (en) Triazine derivatives

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050707

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070606

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070612

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070809

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080122

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080128

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110201

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4074785

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120201

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120201

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130201

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140201

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees