JPS6012840B2 - flame retardant diaphragm - Google Patents
flame retardant diaphragmInfo
- Publication number
- JPS6012840B2 JPS6012840B2 JP51089975A JP8997576A JPS6012840B2 JP S6012840 B2 JPS6012840 B2 JP S6012840B2 JP 51089975 A JP51089975 A JP 51089975A JP 8997576 A JP8997576 A JP 8997576A JP S6012840 B2 JPS6012840 B2 JP S6012840B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- flame
- phosphoric acid
- diaphragm
- retardant
- 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
Links
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
- Paper (AREA)
Description
【発明の詳細な説明】
本発明は、スピーカの難燃性振動板に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flame-retardant diaphragm for a speaker.
従来、振動板に難燃性を持たせるためには、スプレ方式
、含浸方式等が主に用いられていたが、この振動板は振
動板を燐酸系やハロゲン系等公知の難燃液をスプレーす
るかあるいはこの液中に入れて引き上げ脱水、乾燥する
ことによって作ら・れるが、従ってこの液によって振動
板の重量が増し液中に入れている時間、液の濃度によっ
て影響が大きく一定の品質を得ることがむずかしかった
。Conventionally, spraying methods, impregnation methods, etc. have been mainly used to make diaphragms flame retardant. Alternatively, the diaphragm is made by placing it in this liquid, pulling it up, dehydrating it, and drying it, but this liquid increases the weight of the diaphragm, and the quality of the diaphragm is greatly affected by the time it is placed in the liquid and the concentration of the liquid. It was difficult to obtain.
また雛燃剤の多くは吸湿性があるため空気中の湿度によ
って振動効果に著しく影響を与える外経時変化を受け易
く難燃性も一時的なものが多いこと、更には難燃剤の多
くは鉄等の材料が侵されるためスピーカとしての性能に
悪い影響を与える等の欠点があった。本発明は、上記の
欠点を解消すべくなされたもので、その目的とするとこ
ろは、全く新しい材料を用いて安定性があってしかも恒
久性、耐熱性のある難燃性の振動板を提供することにあ
る。In addition, many of the flame retardants are hygroscopic, so they are susceptible to changes over time that can significantly affect the vibration effect due to the humidity in the air, and their flame retardance is often only temporary. This has disadvantages, such as the fact that the material is corroded, which adversely affects the performance of the speaker. The present invention was made in order to eliminate the above-mentioned drawbacks, and its purpose is to provide a flame-retardant diaphragm that is stable, permanent, heat-resistant, and made of a completely new material. It's about doing.
また特殊な設備を設けることなく安価に製造することの
できる難燃性振動板を提供することにある。さらに、繊
維そのものを難燃性とし、通常の抄紙方法により製造す
ることのでき、それによって品質の安定した難燃性振動
板を提供することにある。図はその難燃性繊維の製造工
程を示すもので、原材料の夫燃セルローズ及びその誘導
体又はポリビニルアルコール等の繊維を尿素及び燐酸を
反応させて得られるポリ燐酸アンモンを溶解した水溶液
に尿素を数％溶解した燐酸ェステル化溶液に入れ、所定
時間放置した後これを絞り乾燥させる。そして、ェステ
ル化反応温度（１４０ｑｏ前後）に加熱し、反応後冷却
、水洗いする。そして、振動板に成形するには再度水に
分散し必要に応じて叩解し、サイズ剤、着色剤等の添加
剤を入れ抄紙、成形、乾燥による通常の製造方法により
振動板を得ることができる。一方、金属繊維、ガラス繊
維、カーボン繊維等の無機繊維は上記の製造工程中、ェ
ステル化反応後冷却、水洗いをした難燃性繊維を再度水
に分散するときに混入すればよく、以下の工程は上記の
とおりである。Another object of the present invention is to provide a flame-retardant diaphragm that can be manufactured at low cost without requiring special equipment. Furthermore, it is an object of the present invention to provide a flame-retardant diaphragm whose quality is stable because the fiber itself is made flame-retardant and can be manufactured by a normal papermaking method. The figure shows the manufacturing process of the flame-retardant fiber. A few urea is added to an aqueous solution containing ammonium polyphosphate, which is obtained by reacting the raw material cellulose and its derivatives or fibers such as polyvinyl alcohol with urea and phosphoric acid. % dissolved in phosphoric acid esterification solution, and after standing for a predetermined period of time, it is squeezed and dried. Then, it is heated to the esterification reaction temperature (approximately 140 qo), and after the reaction, it is cooled and washed with water. To form a diaphragm, the diaphragm can be obtained by dispersing it in water again, beating it if necessary, adding additives such as sizing agents and coloring agents, and using the usual manufacturing method of paper making, molding, and drying. . On the other hand, inorganic fibers such as metal fibers, glass fibers, and carbon fibers can be mixed in during the above manufacturing process when the flame-retardant fibers are cooled and washed after the esterification reaction and then redispersed in water. is as above.
本発明の一実施例を以下に示す。An example of the present invention is shown below.
リン酸ェステル化したＢＫＰ
（晒クラフト・パルプ） ……４０％リン酸ェ
ステル化したＰ（未晒クラフト・パルプ） ・・
…・４０％チタン繊維 ・・・・
・・２０％（重量％）を混合した後、サイズ剤として上
記重量に対してカチオン性ポリアミド樹脂 ・・
・・・・２％修酸アンモン …・
・・１％（重量％）を添加し、コーン形状に抄紙した後
１６０００，５ｋ９／塊の加熱加圧成形を行った。Phosphate esterified BKP (bleached kraft pulp)...40% phosphate esterified P (unbleached kraft pulp)...
...・40% titanium fiber ...
After mixing 20% (wt%), cationic polyamide resin as a sizing agent based on the above weight.
...2% ammonium oxalate ...
...1% (wt%) was added, paper was made into a cone shape, and then heated and pressure molded to 16,000,5k9/block.
その結果、連続負荷９６時間で１００℃まで最低共振周
波数ら等のスピーカ諸特性の変動は確認されなかつた。As a result, no fluctuations in speaker characteristics such as the lowest resonant frequency were observed up to 100° C. after 96 hours of continuous loading.
また、試料をバーナーで加熱したが、炎がでるのは最初
の１栃砂以内であり、その後は自己消火し、燃え広がる
ことはなかった。更にバーナーで加熱したが炎がでるこ
とはなかった。以上のとおり、本発明は抄紙する繊維を
難燃性のリン酸系セルローズ繊維又はリン酸系ポリビニ
ルアルコール繊維と、金属繊維等の無機繊維とを使用し
たため、振動板の成形を従来と全く変えることなく、難
燃性振動板を得ることができ、かつ従釆のスプレー方式
や含浸方式が経時変化により難燃性が悪化する恐れがあ
ったが、その心配は全く必要としない。In addition, although the sample was heated with a burner, the flame only appeared within the first tochisand, after which it self-extinguished and the flame did not spread. I further heated it with a burner, but no flame appeared. As described above, since the present invention uses flame-retardant phosphoric acid-based cellulose fibers or phosphoric acid-based polyvinyl alcohol fibers and inorganic fibers such as metal fibers as paper-making fibers, the molding of the diaphragm is completely different from conventional methods. It is possible to obtain a flame-retardant diaphragm without any problems, and there is no need to worry about the flame retardancy of the spray method or impregnation method, which may deteriorate over time due to changes over time.
また、無機繊維を混入しているから更に難燃性が向上す
ると共に耐熱性も向上し耐入力特性大なるスピーカを実
現できる。更に燐酸系セルローズ又は燐酸系ポリビニル
アルコール繊維は原料繊維に比較してヤング率が高くな
り、腰の強い振動板を得ることができる。Furthermore, since inorganic fibers are mixed, the flame retardance is further improved and the heat resistance is also improved, making it possible to realize a speaker with high input resistance characteristics. Furthermore, phosphoric acid-based cellulose or phosphoric acid-based polyvinyl alcohol fibers have a higher Young's modulus than the raw material fibers, making it possible to obtain a strong diaphragm.
さらに、リン酸系セルローズ繊維又はリン酸系ポリビニ
ルァルコール繊維は夫燃繊維に比較して耐湿性があるた
め、空気中の湿度にあまり影響されず常に安定した性能
を保つことができると共に経時変化も少ない。また、リ
ン酸系セルローズ又はリン酸系ポリビニルアルコールは
カチン系のため金属繊維、カーボン繊維、ガラス繊維等
無機繊維となじみやすくしかも結合しやすいため、これ
ら繊維と混抄することにより、より良好な振動板を得る
ことができる。In addition, phosphoric acid-based cellulose fibers or phosphoric acid-based polyvinyl alcohol fibers are more moisture resistant than husbandrylene fibers, so they are not affected much by the humidity in the air and can always maintain stable performance and change over time. There are also few. In addition, since phosphoric acid-based cellulose or phosphoric acid-based polyvinyl alcohol is cathine-based, it is easily compatible and bonded with inorganic fibers such as metal fibers, carbon fibers, and glass fibers. can be obtained.
図面は本発明による雛燃繊維の製造工程を示す工程図で
ある。The drawings are process diagrams illustrating the manufacturing process of the Hinenen fiber according to the present invention.
Claims (1)
ルコール繊維に金属繊維、カーボン繊維、ガラス繊維等
の無機繊維を混抄してなる難燃性振動板。 ２ 前記リン酸系セルローズ繊維はリン酸アンモンセル
ローズ繊維であり、前記リン酸系ポリビニルアルコール
繊維はリン酸アンモンポリビニルアルコール繊維である
ことを特徴とする特許請求の範囲第１項記載の難燃性振
動板。[Scope of Claims] 1. A flame-retardant diaphragm made by mixing phosphoric acid-based cellulose fibers or phosphoric acid-based polyvinyl alcohol fibers with inorganic fibers such as metal fibers, carbon fibers, and glass fibers. 2. The flame-retardant vibration according to claim 1, wherein the phosphoric acid-based cellulose fiber is an ammonium phosphate cellulose fiber, and the phosphoric acid-based polyvinyl alcohol fiber is an ammonium phosphate polyvinyl alcohol fiber. Board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51089975A JPS6012840B2 (en) | 1976-07-28 | 1976-07-28 | flame retardant diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51089975A JPS6012840B2 (en) | 1976-07-28 | 1976-07-28 | flame retardant diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5315820A JPS5315820A (en) | 1978-02-14 |
| JPS6012840B2 true JPS6012840B2 (en) | 1985-04-03 |
Family
ID=13985667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51089975A Expired JPS6012840B2 (en) | 1976-07-28 | 1976-07-28 | flame retardant diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6012840B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55163300A (en) * | 1979-06-06 | 1980-12-19 | Otsuka Kagaku Yakuhin | Production of incombustible low density cellulose fiberboard |
| CN110607046B (en) * | 2019-09-26 | 2022-07-01 | 西南石油大学 | Flame-retardant polyvinyl alcohol aerogel and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625840B2 (en) * | 1971-08-05 | 1981-06-15 | ||
| JPS5066228A (en) * | 1973-10-11 | 1975-06-04 | ||
| JPS5071318A (en) * | 1973-10-24 | 1975-06-13 | ||
| JPS5189977A (en) * | 1975-02-04 | 1976-08-06 | ||
| JPS5847919B2 (en) * | 1975-08-29 | 1983-10-25 | オンキヨウ カブシキガイシヤ | Method for manufacturing flame-retardant speaker diaphragm |
| JPS5238916A (en) * | 1975-09-23 | 1977-03-25 | Sharp Corp | Mthod of producing vibration board for speaker |
-
1976
- 1976-07-28 JP JP51089975A patent/JPS6012840B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5315820A (en) | 1978-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2976205A (en) | Preparation of webs and sheets from cellulose esters | |
| DE69121384D1 (en) | Fluffy organic, heat-insulating cellulose and manufacturing and application processes | |
| JPS6012840B2 (en) | flame retardant diaphragm | |
| JPS54138060A (en) | Manufacturing of flame retardant low-density cellulosic fiber board | |
| JP3027204B2 (en) | Flame retardant cone paper | |
| US2895868A (en) | Method of making resin impregnated paper | |
| US2559221A (en) | Manufacture of wet strength paper | |
| US3779861A (en) | Fireproofing cellulose-containing materials | |
| JPS5836800B2 (en) | Flame retardant sound absorbing board | |
| US4451609A (en) | Flame-retarded acoustic diaphragm | |
| US4416728A (en) | Self-extinguishing paper materials | |
| US3305436A (en) | Cationic phosphorus-containing wet strength resin colloid and paper having a contentthereof | |
| SE446888B (en) | SET TO MAKE LIGNOCELLULOSAMATER MATERIAL WITH IMPROVED STRENGTH, DRAINAGE FORM, AND PAINTABILITY | |
| JP6922243B2 (en) | Artificial potting soil | |
| CN111549563A (en) | Flame-retardant cone for loudspeaker and preparation method thereof | |
| JPS5847919B2 (en) | Method for manufacturing flame-retardant speaker diaphragm | |
| JPS6150500A (en) | Rolled paper used for voice coil bobbin for speaker | |
| JPS62150995A (en) | Diaphragm for speaker | |
| FI68099C (en) | FOER REFRIGERATION FOR FLAMMING OF CELLULOSE MATERIAL | |
| SU988945A1 (en) | Method of producing fibrous material | |
| DE69022157D1 (en) | METHOD FOR PRODUCING A PANEL FROM MINERAL WOOL. | |
| US3485713A (en) | Water-laid sheets containing synthetic fibers | |
| JPH04367199A (en) | Speaker diaphragm | |
| JPS6150493A (en) | Diaphragm for speaker | |
| JPS59220544A (en) | Sound absorbing panel for ceiling |