JPS6236069B2 - - Google Patents
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- Publication number
- JPS6236069B2 JPS6236069B2 JP58133216A JP13321683A JPS6236069B2 JP S6236069 B2 JPS6236069 B2 JP S6236069B2 JP 58133216 A JP58133216 A JP 58133216A JP 13321683 A JP13321683 A JP 13321683A JP S6236069 B2 JPS6236069 B2 JP S6236069B2
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- weight
- parts
- nylon
- resin
- short
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- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は導電性を有する成形用ポリアミド樹脂
組成物に関するものである。
最近、熱可塑性樹脂に導電性フイラーとして、
金属短繊維を混入して、射出成形可能な熱可塑性
樹脂に導電性を付与する試みがなされている。
就中、ポリアミド樹脂は優れた耐熱性、耐油
性、成形性、剛性、強靭性等の特長を有している
ため、特に注目されている熱可塑性樹脂素材のひ
とつである。
しかしながらポリアミド樹脂に充分な導電性を
付与するだけの金属短繊維を混入した場合、種々
の機械的物性の低下を避けることはできないとい
う欠点を有している。
上記の機械的物性の低下という欠点を改良する
ため、補強材としてガラス繊維を混入することが
考えられるが、この場合には成形品のウエルドラ
インでの強度低下が著しく、成形品のデザインに
様々な制約を受けるという問題点がある。
又、ポリアミド樹脂にアイオノマー樹脂を配合
して衝撃強度を向上することが行なわれている
が、この場合には、ポリアミド樹脂の特長である
剛性や強靭性が少なからず犠性になるという問題
点を有している。本発明等はかかる従来技術の有
する欠点を改良すべく鋭意研究した結果本発明を
完成した。
本発明の目的は機械的物性のバランスが良く、
且つ優れた導電性を有する成形用ポリアミド樹脂
組成物を提供するにある。
即ち、本発明はポリアミド樹脂100重量部に対
して、ガラス繊維５〜80重量部、エチレン系アイ
オノマー樹脂５〜50重量％、金属短繊維10〜200
重量部を配合してなる導電性を有する成形用ポリ
アミド樹脂組成物からなるものである。
以下、本発明を詳細に説明する。
本発明に使用するポリアミド樹脂としては、分
子鎖中にアミド基を含有する直鎖状ポリマーであ
ればよく、例えば、ナイロン４、ナイロン６、ナ
イロン７、ナイロン８、ナイロン11、ナイロン
12、ナイロン66、ナイロン69、ナイロン610、ナ
イロン611、ナイロン612、ナイロン6T等の単独
重合体及びこれらの２種以上の混合物、共重合体
を挙げることができるが、特にナイロン６、ナイ
ロン12、ナイロン66が好ましい。
ガラス繊維の配合量は、ポリアミド樹脂100重
量部に対して５〜80重量部であり、特に10〜50重
量部が好ましい。配合量が５重量部未満の場合に
は、機械的物性、特に剛性が不充分であり、一方
配合量が80重量部を超えると成形品のウエルドラ
インでの強度低下が著しい。
本発明で使用するエチレン系アイオノマー樹脂
とは、エチレンを含むα−オレフインとα・β−
不飽和カルボン酸又はその誘導体との共重合体の
ペンダントカルボキシル基に原子価が１〜３の金
属イオンを付加せしめたイオン性炭化水素共重合
体の金属塩である。
ここで、α・β−不飽和カルボン酸又はその誘
導体としてはアクリル酸、メタクリル酸、マレイ
ン酸、フマル酸或はこれらの酸の無水物又はエス
テル等が挙げられる。金属イオンとしては、特に
限定されないが、例えばナトリウム、カリウム、
カルシウム、マグネシウム、亜鉛、鉄等が挙げら
れる。
本発明の成形用組成物は、上記エチレン系アイ
オノマー樹脂を、ポリアミド樹脂100重量部に対
して、５〜50重量部配合せしめるが、特に８〜35
重量％配合することが好ましい。
エチレン系アイオノマー樹脂の配合量が５重量
部未満の場合、衝撃強度の向上効果が不充分であ
り、一方配合量が50重量部を超えると強度、剛
性、強靭性が低下し、ポリアミド樹脂の特徴を活
かすことが出来ず好ましくない。
本発明に使用する金属短繊維としては鉄、アル
ミニウム、銅、ニツケル及びこれらの金属の合金
等が挙げられるが、特にアルミニウム短繊維及び
黄銅短繊維が好適である。
金属短繊維の形状は、通常、繊維径５〜150
μ、繊維長0.3〜10mmのものを使用するが、特に
繊維径10〜100μ、繊維長0.8〜５mmのものが好ま
しい。
金属短繊維の配合量は、ポリアミド樹脂100重
量部に対して、１〜200重量部であることが肝要
であり、好ましくは、20〜130重量部である。
金属短繊維の配合量が10重量部未満の場合、導
電性付与効果が不充分であり、一方、200重量部
を超えると成形品のウエルドラインでの強度低下
が著しくなり、何れの場合も本発明の目的を達成
することができない。
本発明の組成物は、最終成形品に至る任意の段
階で、各構成成分を均一に混練出来る装置を使用
することにより得られる。
例えば、ミキシング部を有した単軸或いは多軸
の混練機を使用して、各構成成分を溶融混練して
ペレツト化した後、通常の射出成形機を用いて成
形加工したり、或は混練機能を有した射出成形機
を用いて、一段で射出成形することもできる。
本発明により得られる混練機は、例えばICや
LSIを組み込んだ各種電子機器類の筐体や面発熱
体等に使用される。
以下、実施例を用いて、本発明の更に詳細な説
明をする。
実施例 １
ナイロン６樹脂（カネボウ合繊(株)製 MC−
112）、ガラス繊維（日東紡績(株)製 CS 6PE−
472）、エチレン系アイオノマー樹脂（三井ポリケ
ミカル(株)製 ハイミラン1885）及び黄銅短繊維
（神戸鋳鉄所(株)製 Ｃ−2600 60×１）を表−１に
示す組成比で配合し、25mm押出機を用いて、シリ
ンダー温度260℃で溶融混練してペレツトを製造
した。
次いで得られたペレツトを使用して、通常行な
われているナイロン６の射出成形条件で射出成形
を行なつた。
得られた射出成形品の物性の測定結果を表−１
に併記する。
尚、表−１中の組成覧の数値は重量部を示し、
表−２以下に於いても同様である。又、表−２以
下に於ける物性の測定方法も表−１の場合と同様
である。
The present invention relates to a polyamide resin composition for molding having electrical conductivity. Recently, as a conductive filler in thermoplastic resin,
Attempts have been made to impart electrical conductivity to injection moldable thermoplastic resins by incorporating short metal fibers. Among these, polyamide resin is one of the thermoplastic resin materials that is attracting particular attention because it has features such as excellent heat resistance, oil resistance, moldability, rigidity, and toughness. However, if sufficient short metal fibers are mixed into the polyamide resin to impart sufficient electrical conductivity, it has the disadvantage that various mechanical properties cannot be avoided. In order to improve the above-mentioned drawback of deterioration in mechanical properties, it is possible to mix glass fiber as a reinforcing material, but in this case, the strength of the molded product at the weld line will be significantly reduced, and the design of the molded product will vary. The problem is that it is subject to certain restrictions. In addition, ionomer resins are blended with polyamide resins to improve impact strength, but in this case, the problem is that the rigidity and toughness, which are the characteristics of polyamide resins, are sacrificed to some extent. have. The present invention was completed as a result of intensive research aimed at improving the drawbacks of the prior art. The purpose of the present invention is to have good balance of mechanical properties,
Another object of the present invention is to provide a polyamide resin composition for molding that has excellent electrical conductivity. That is, the present invention uses 5 to 80 parts by weight of glass fibers, 5 to 50 parts by weight of ethylene ionomer resin, and 10 to 200 parts by weight of short metal fibers to 100 parts by weight of polyamide resin.
It is made of a polyamide resin composition for molding which has conductivity and is made by blending parts by weight. The present invention will be explained in detail below. The polyamide resin used in the present invention may be any linear polymer containing an amide group in its molecular chain, such as nylon 4, nylon 6, nylon 7, nylon 8, nylon 11, nylon
Examples include homopolymers such as 12, nylon 66, nylon 69, nylon 610, nylon 611, nylon 612, and nylon 6T, as well as mixtures and copolymers of two or more of these, particularly nylon 6, nylon 12, Nylon 66 is preferred. The amount of glass fiber blended is 5 to 80 parts by weight, particularly preferably 10 to 50 parts by weight, per 100 parts by weight of the polyamide resin. If the amount is less than 5 parts by weight, the mechanical properties, especially the rigidity, will be insufficient, while if the amount exceeds 80 parts by weight, the strength at the weld line of the molded article will be significantly reduced. The ethylene-based ionomer resin used in the present invention refers to α-olefin containing ethylene and α/β-
It is a metal salt of an ionic hydrocarbon copolymer in which a metal ion having a valence of 1 to 3 is added to the pendant carboxyl group of a copolymer with an unsaturated carboxylic acid or a derivative thereof. Here, examples of the α/β-unsaturated carboxylic acid or its derivative include acrylic acid, methacrylic acid, maleic acid, fumaric acid, and anhydrides or esters of these acids. Examples of metal ions include, but are not limited to, sodium, potassium,
Examples include calcium, magnesium, zinc, iron, etc. The molding composition of the present invention contains 5 to 50 parts by weight of the above-mentioned ethylene ionomer resin based on 100 parts by weight of the polyamide resin, particularly 8 to 35 parts by weight.
It is preferable to mix it by weight%. If the amount of ethylene ionomer resin blended is less than 5 parts by weight, the impact strength improvement effect will be insufficient, while if the blended amount exceeds 50 parts by weight, strength, rigidity, and toughness will decrease, and the characteristics of polyamide resin I don't like it because I can't take advantage of it. Examples of short metal fibers used in the present invention include iron, aluminum, copper, nickel, and alloys of these metals, and short aluminum fibers and short brass fibers are particularly preferred. The shape of short metal fibers usually has a fiber diameter of 5 to 150.
A fiber having a diameter of 10 to 100 μm and a fiber length of 0.8 to 5 mm is particularly preferred. It is important that the amount of the short metal fibers is 1 to 200 parts by weight, preferably 20 to 130 parts by weight, based on 100 parts by weight of the polyamide resin. If the blended amount of short metal fibers is less than 10 parts by weight, the effect of imparting electrical conductivity will be insufficient, while if it exceeds 200 parts by weight, the strength of the molded product will decrease significantly at the weld line. The purpose of the invention cannot be achieved. The composition of the present invention can be obtained by using an apparatus capable of uniformly kneading each constituent component at any stage leading to the final molded product. For example, a single or multi-shaft kneader with a mixing section may be used to melt and knead each constituent component into pellets, and then molded using a normal injection molding machine, or a kneading function may be used. It is also possible to perform injection molding in one stage using an injection molding machine equipped with the following. The kneading machine obtained by the present invention is, for example, an IC or
Used in the housings and surface heating elements of various electronic devices incorporating LSI. Hereinafter, the present invention will be explained in more detail using Examples. Example 1 Nylon 6 resin (MC- manufactured by Kanebo Gosen Co., Ltd.)
112), glass fiber (Nittobo Co., Ltd. CS 6PE−
472), ethylene-based ionomer resin (Himilan 1885 manufactured by Mitsui Polychemical Co., Ltd.) and short brass fiber (C-2600 60 x 1 manufactured by Kobe Cast Iron Works Co., Ltd.) were blended in the composition ratio shown in Table 1. Pellets were produced by melt-kneading using an extruder at a cylinder temperature of 260°C. Next, injection molding was performed using the obtained pellets under the conditions commonly used for injection molding of nylon 6. Table 1 shows the measurement results of the physical properties of the injection molded products obtained.
Also listed in In addition, the numbers in the composition list in Table 1 indicate parts by weight,
The same applies to Table 2 and below. In addition, the methods for measuring physical properties in Table-2 and below are the same as in Table-1.
【表】
実施例 ２
ナイロン66樹脂（旭化成工業(株)製 レオナ
1300S）、ガラス繊維（日東紡績(株)製 CS 6PE−
231）、エチレン系アイオノマー樹脂（三井ポリケ
ミカル(株)製 ハイミラン1554）及びアルミニウム
短繊維（神戸鋳鉄所(株)製 Ａ−5052 90X3）を表
−２に示す組成比で配合し、25mm押出機を用い
て、シリンダー温度290℃で溶融混練してペレツ
トを製造した。次いで得られたペレツトを使用し
て、通常行なわれているナイロン66樹脂の射出成
形条件で射出成形を行なつた。
得られた射出成形品の物性の測定結果を表−２
に併記する。[Table] Example 2 Nylon 66 resin (Leona manufactured by Asahi Kasei Industries, Ltd.)
1300S), glass fiber (Nittobo Co., Ltd. CS 6PE−
231), ethylene-based ionomer resin (Himilan 1554 manufactured by Mitsui Polychemical Co., Ltd.) and aluminum short fiber (A-5052 90X3 manufactured by Kobe Cast Iron Works Co., Ltd.) were blended in the composition ratio shown in Table 2, and a 25 mm extruder was used. Pellets were produced by melt-kneading at a cylinder temperature of 290°C. Next, the obtained pellets were used for injection molding under the usual injection molding conditions for nylon 66 resin. Table 2 shows the measurement results of the physical properties of the injection molded products obtained.
Also listed in
【表】【table】
【表】
実施例 ３
ナイロン６樹脂（カネボウ合繊(株)製 MC−
120）、ガラス繊維（日東紡績(株)製 CS 6PE−
472）、エチレン系アイオノマー樹脂（三井ポリケ
ミカル(株)製 ハイミラン1706）、黄銅短繊維（神
戸鋳鉄所(株)製 Ｃ−2600 20X1）を表−３に示す
組成比で配合し、25mm押出機を用いてシリンダー
温度275℃で溶融混練してペレツトを製造した。
次いで得られたペレツトを使用して、通常行な
われているナイロン６樹脂の射出成形条件で射出
成形を行なつた。
得られた射出成形品の物性の測定結果を表−３
に併記する。
尚、サンプルNo.15の組成のものは溶融時の流
動性が悪く、ペレツト化することは出来なかつ
た。[Table] Example 3 Nylon 6 resin (MC- manufactured by Kanebo Gosen Co., Ltd.)
120), glass fiber (Nittobo Co., Ltd. CS 6PE−
472), ethylene ionomer resin (Himilan 1706 manufactured by Mitsui Polychemical Co., Ltd.), and short brass fiber (C-2600 20X1 manufactured by Kobe Cast Iron Works Co., Ltd.) in the composition ratio shown in Table 3, and extruded using a 25 mm extruder. The pellets were melt-kneaded using a cylinder temperature of 275°C to produce pellets. Next, the obtained pellets were used for injection molding under conventional injection molding conditions for nylon 6 resin. Table 3 shows the measurement results of the physical properties of the injection molded products obtained.
Also listed in The composition of Sample No. 15 had poor fluidity during melting and could not be pelletized.
Claims (1)
繊維５〜80重量部、エチレン系アイオノマー樹脂
５〜50重量部、金属短繊維10〜200重量部を配合
してなる導電性を有する成形用ポリアミド樹脂組
成物。 ２ ガラス繊維の配合量が10〜50重量％である特
許請求の範囲第１項記載の組成物。 ３ エチレン系アイオノマー樹脂の配合量が８〜
35重量％である特許請求の範囲第１項記載の組成
物。 ４ 金属短繊維がアルミニウム短繊維及び／又は
黄銅短繊維である特許請求の範囲第１項記載の組
成物。 ５ 金属短繊維の配合量が20〜130重量％である
特許請求の範囲第１項記載の組成物。[Claims] 1. A conductive material made by blending 5 to 80 parts by weight of glass fiber, 5 to 50 parts by weight of ethylene ionomer resin, and 10 to 200 parts by weight of short metal fibers to 100 parts by weight of polyamide resin. A polyamide resin composition for molding. 2. The composition according to claim 1, wherein the content of glass fiber is 10 to 50% by weight. 3 The blending amount of ethylene ionomer resin is 8~
35% by weight of a composition according to claim 1. 4. The composition according to claim 1, wherein the metal short fibers are aluminum short fibers and/or brass short fibers. 5. The composition according to claim 1, wherein the blended amount of short metal fibers is 20 to 130% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13321683A JPS6026057A (en) | 1983-07-20 | 1983-07-20 | Electrically conductive polyamide resin composition for molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13321683A JPS6026057A (en) | 1983-07-20 | 1983-07-20 | Electrically conductive polyamide resin composition for molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6026057A JPS6026057A (en) | 1985-02-08 |
| JPS6236069B2 true JPS6236069B2 (en) | 1987-08-05 |
Family
ID=15099437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13321683A Granted JPS6026057A (en) | 1983-07-20 | 1983-07-20 | Electrically conductive polyamide resin composition for molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026057A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791457B2 (en) * | 1986-01-21 | 1995-10-04 | 旭化成工業株式会社 | Polyamide resin composition |
| JPS63105056A (en) * | 1986-10-20 | 1988-05-10 | Mitsuboshi Belting Ltd | Production of polyamide resin composition |
| JPH0232158A (en) * | 1988-07-20 | 1990-02-01 | Aisin Seiki Co Ltd | Composition for molding electrically conductive resin |
| US5925698A (en) * | 1997-03-14 | 1999-07-20 | The Lubrizol Corporation | Powder coating composition and method for coating a substrate using said powder coating composition |
| KR101257693B1 (en) * | 2008-11-05 | 2013-04-24 | 제일모직주식회사 | Electrically insulated high thermal conductive polymer composition |
| CN106459405B (en) * | 2014-06-19 | 2020-01-14 | 普立万公司 | Thermally and electrically conductive nylon compound |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6057464B2 (en) * | 1977-03-30 | 1985-12-14 | 三菱瓦斯化学株式会社 | Polyamide resin composition |
| JPS5736154A (en) * | 1980-08-13 | 1982-02-26 | Mitsubishi Chem Ind Ltd | Conductive polyamide resin composition |
| JPS57102948A (en) * | 1980-12-17 | 1982-06-26 | Inoue Mtp Co Ltd | Modified nylon bumper |
| JPS5823850A (en) * | 1981-08-04 | 1983-02-12 | Asahi Chem Ind Co Ltd | Polyamide composition having impact resistance |
| JPS5829854A (en) * | 1981-08-17 | 1983-02-22 | Toray Ind Inc | Polyamide resin composition |
| JPS5878499A (en) * | 1981-11-05 | 1983-05-12 | アイシン精機株式会社 | Resin material for shielding electromagnetic wave |
-
1983
- 1983-07-20 JP JP13321683A patent/JPS6026057A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6026057A (en) | 1985-02-08 |
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