JPH0743965B2 - Conductive resin composition - Google Patents
Conductive resin compositionInfo
- Publication number
- JPH0743965B2 JPH0743965B2 JP60168440A JP16844085A JPH0743965B2 JP H0743965 B2 JPH0743965 B2 JP H0743965B2 JP 60168440 A JP60168440 A JP 60168440A JP 16844085 A JP16844085 A JP 16844085A JP H0743965 B2 JPH0743965 B2 JP H0743965B2
- Authority
- JP
- Japan
- Prior art keywords
- nickel
- wollastonite
- resin composition
- coated
- weight
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は導電性樹脂組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a conductive resin composition.
近年、電子部品の小型化、精密化などに伴なつて導電性
接着、導電性塗料、導電性フィルムを始めとし各種導電
性機能部品などの開発が盛んに行なわれている。これら
の素材料に導電性を付与するには、通常、金、銀、銅、
ニツケル、アルミニウム等の金属もしくは合金からなる
粉末状もしくは繊維状の良導体、または金属被覆の雲母
粉末、カーボン粉末、ガラス粉末などを充填材として配
合する方法が種々試みられて来た。しかし、これら充填
材の中でカーボン材料は導電性が不足し、金属被覆の雲
母粉末、カーボン粉末、ガラス粉末等は、粉末の粒度お
よび形状によつて導電性が大きく左右され、形状の整つ
た均質な微粉末を調製する必要があるが、現状ではそれ
を満足させることは非常に困難である。そこで、現実的
には金属繊維とニツケル粉末などが使用されるが、これ
らはすべて比重が大きく、脂肪に混合して期待する導電
性を達成するためには通常20容積％前後の添加が必要で
あることから成形品の重量が非常に大きくなり、樹脂に
よる成形品の軽量化という主旨からは好ましくない結果
を招くことになる。2. Description of the Related Art In recent years, with the miniaturization and refinement of electronic parts, various kinds of conductive functional parts such as conductive adhesives, conductive paints and conductive films have been actively developed. To impart conductivity to these raw materials, gold, silver, copper,
Various methods have been tried in which powdered or fibrous good conductors made of metal or alloy such as nickel and aluminum, or metal-coated mica powder, carbon powder, glass powder and the like are mixed as a filler. However, among these fillers, the carbon material lacks conductivity, and the conductivity of the metal-coated mica powder, carbon powder, glass powder, etc. is greatly influenced by the particle size and shape of the powder, and the shape is adjusted. It is necessary to prepare a homogeneous fine powder, but it is very difficult to satisfy it at present. Therefore, in reality, metal fibers and nickel powder are used, but they all have a large specific gravity, and it is usually necessary to add about 20% by volume in order to achieve the expected conductivity when mixed with fat. As a result, the weight of the molded product becomes very large, which leads to an unfavorable result from the point of reducing the weight of the molded product by the resin.
また、機械的及び熱的特性に優れた比較的軽量の導電性
樹脂組成物として、ニッケルメッキしたウオラストナイ
トを合成樹脂中に混在させたものが知られている（特開
昭59−168044号）。Further, as a relatively lightweight conductive resin composition having excellent mechanical and thermal characteristics, a mixture of nickel-plated wollastonite in a synthetic resin is known (Japanese Patent Laid-Open No. 59-168044). ).
しかし、上記したようにニッケルメッキしたウオラスト
ナイトを合成樹脂に混在させたものは、摩擦係数が大き
くなり易く、導電性塗料や導電性フィルムの材料として
求められる摺動特性を充分に満足してしないものであっ
た。However, a mixture of nickel-plated wollastonite in a synthetic resin as described above tends to have a large friction coefficient, and sufficiently satisfies the sliding characteristics required as a material for a conductive paint or a conductive film. It wasn't.
このように従来の導電性樹脂組成物では、充填材の比重
が大きくて樹脂を用いることによる軽量化が図れず、ま
た摺動特性が劣るものであって、所要の機械的強度、導
電性、摩擦摩耗特性を全て満足するものがないという問
題点があった。Thus, in the conventional conductive resin composition, the specific gravity of the filler is large and the weight cannot be reduced by using the resin, and the sliding property is inferior, and the required mechanical strength, conductivity, and There is a problem that none of them satisfy all the friction and wear characteristics.
上記の問題点を解決するために、この発明においては、
合成樹脂中にニッケル被覆ウオラストナイトを混合して
なる導電性樹脂組成物において、前記ニッケル被覆ウオ
ラストナイトが平均繊維長10〜100μｍでアスペクト比
が10以上の繊維状であり、かつ被覆されるニッケル量が
ウオラストナイトとニッケル被覆との合計重量の10〜70
重量％とする手段を採用したものである。以下その詳細
を述べる。In order to solve the above problems, in the present invention,
In a conductive resin composition obtained by mixing nickel-coated wollastonite in a synthetic resin, the nickel-coated wollastonite is fibrous with an average fiber length of 10 to 100 μm and an aspect ratio of 10 or more, and is coated. The amount of nickel is 10 to 70 of the total weight of wollastonite and nickel coating.
This is a method in which the weight percent is adopted. The details will be described below.
まず、この発明のウオラストナイトは珪灰石とも呼ばれ
る鎖状珪酸塩の天然品もしくは人造品で、CaSiO3で示さ
れる物質であつて、平均繊維長は10〜100μｍ、アスペ
クト比は10以上のものが好ましい。このような繊維状ウ
オラストナイト表面にニッケルを被覆するには、無電解
（化学）めつき、または真空蒸着、スパツタリング等の
物理的手法によればよいが、一般的には無電解めつきが
多く実施されている。そして、被覆されるニツケル量は
ウオラストナイトとニツケル被覆との合計量に対して10
〜70重量％であることが望ましい。なぜならばニツケル
被覆量が10重量％未満の少量では充分な導電性が得られ
ず、また、70重量％を越える多量では増量による導電性
の向上は全く認められず重量が増加するばかりで好まし
くないからであり、10〜70重量％の範囲であればウオラ
ストナイトの全表面が一応被覆でき、しかもニツケル単
体に近い導電性が発現できるからである。なお、ウオラ
ストナイトの繊維長は10μｍよりも短いときは、被覆す
るニツケルの必要量が多くなり、また組成物を形成した
ときの美感を阻害し、逆に100μｍよりも長くなると樹
脂中に混練分散させる際に切断されやすく、さらに摺動
特性上、摩擦係数が大きくなり摺動材としては使用出来
ない。そしてアスペクト比が10より小さいと導電性は満
足されない。First, the wollastonite of the present invention is a natural product or artificial product of a chain silicate also called wollastonite, which is a substance represented by CaSiO 3 and has an average fiber length of 10 to 100 μm and an aspect ratio of 10 or more. Is preferred. In order to coat the surface of such fibrous wollastonite with nickel, electroless (chemical) plating, or a physical method such as vacuum deposition or spattering may be used. Many have been implemented. The amount of nickel coated is 10 with respect to the total amount of wollastonite and nickel coating.
It is desirable to be 70% by weight. This is because when the nickel coating amount is less than 10% by weight, sufficient conductivity cannot be obtained, and when the nickel coating amount is more than 70% by weight, no improvement in conductivity due to the increase is observed and the weight increases, which is not preferable. This is because, if it is in the range of 10 to 70% by weight, the entire surface of wollastonite can be covered temporarily, and the conductivity close to that of nickel itself can be exhibited. If the fiber length of wollastonite is shorter than 10 μm, the required amount of nickel to coat will be large, and the aesthetics of the composition formed will be impaired. Conversely, if it is longer than 100 μm, it will be kneaded into the resin. It is easily cut when dispersed, and has a large friction coefficient in terms of sliding characteristics, and cannot be used as a sliding material. And if the aspect ratio is less than 10, the conductivity is not satisfied.
つぎに、この発明における合成樹脂は従来から比較的摩
擦係数が小さい樹脂として各方面で摺動材として使用さ
れているものであれば特に種類を限定するものではな
く、たとえば、ポリエチレン、ポリプロピレンのような
汎用的なポリオレフインを始めとし、フエノール樹脂、
ポリエステル、エポキシ樹脂、ポリアミド（ナイロ
ン）、ポリカーボネート、ポリオキシメチレン、シリコ
ーン樹脂、ポリイミド、ポリアミドイミミド、ポリエー
テルイミド、ポリエーテルサルフオン、ポリエーテルエ
ーテルケトン、ポリフエニンサルフアイド、ポリアリレ
ート、フツ素樹脂のような熱硬化性、または高温熱可塑
性の樹脂を例として挙げることができ、これらの１種も
しくは２種以上を選択使用すればよい。Next, the synthetic resin in the present invention is not particularly limited as long as it has been used as a sliding material in each direction as a resin having a relatively small coefficient of friction, and examples thereof include polyethylene and polypropylene. Starting with general-purpose polyolefin, phenol resin,
Polyester, Epoxy resin, Polyamide (Nylon), Polycarbonate, Polyoxymethylene, Silicone resin, Polyimide, Polyamideimid, Polyetherimide, Polyether sulfone, Polyether ether ketone, Polyphenylene sulfide, Polyarylate, Fluorine resin Examples of such thermosetting or high temperature thermoplastic resins may be mentioned, and one or more of these may be selected and used.
このような合成樹脂にニツケル被覆ウオラストナイトを
混合するには二軸溶融押出機、射出成形機等通常用いら
れる機器を使つて、プリプレグもしくは溶融された状態
の樹脂にニツケル被覆ウオラストナイトを添加混合すれ
ばよく、この際必要に応じ、カツプリング剤、界面活性
剤、酸化防止剤等の添加剤またはその他の導電性充填材
など適宜併用しても支障はない。To mix nickel-coated wollastonite with such a synthetic resin, use a commonly used device such as a twin-screw melt extruder or an injection molding machine, and add the nickel-coated wollastonite to the prepreg or molten resin. It suffices to mix them, and at this time, if necessary, additives such as a coupling agent, a surfactant, an antioxidant, or other conductive fillers may be appropriately used in combination without any problem.
実施例および比較例に使用した原材料はつぎのとおりで
ある。すなわち、 ポリフイエニレンサルフアイド（PPS）〔米国フイ
リツプス・ペトローリアム社製：ライトンP4〕 ポリオキシメチレン（POM）〔ポリプラスチック社
製：ジユウコンM90−71〕 ポリブチレンテレフタレート（PBT）〔三菱化成社
製：ノバトール5010〕 ポリアミド（ナイロン12）〔ダイセル化学社製：ダ
イアミドL1640〕 フエノール樹脂〔住友ベークライト社製：スミコン
PM−8200J〕 ニツケル被覆ウオラストナイト〔丸和バイオケミカ
ル社製：ケモリツト、平均繊維長25μｍ、平均繊維径３
μｍ、無電解メツキ法によるニツケル被覆量40重量％〕 黄銅繊維〔アイシン精密社製：アイシンメタルフア
イバー、平均繊維長3mm、平均繊維径60μｍ〕 ニツケル被覆雲母〔レプコ社製:S325、無電解ニツ
ケル40重量％〕 である。The raw materials used in Examples and Comparative Examples are as follows. That is, polyphenylene sulphate (PPS) [US Phillips Petroleum, Inc .: Ryton P4] Polyoxymethylene (POM) [Polyplastics: Zyukon M90-71] Polybutylene terephthalate (PBT) [Mitsubishi Kasei: Novator 5010] Polyamide (nylon 12) [Daicel Chemical Co., Ltd .: Daiamide L1640] phenol resin [Sumitomo Bakelite Co., Ltd .: Sumicon]
PM-8200J] Nickel-coated wollastonite [Maruwa Biochemical Co., Ltd .: Chemolite, average fiber length 25 μm, average fiber diameter 3
μm, nickel coating amount by electroless plating method 40% by weight] Brass fiber [Aisin Precision Co., Ltd .: Aisin Metal Fiber, average fiber length 3 mm, average fiber diameter 60 μm] Nickel coated mica [Lepco: S325, electroless nickel 40 % By weight].
これらの諸原材料を表に示すような配合割合（容量比）
で混合し、二軸溶融押出機に供給し、溶融混和した後造
粒機を用いてペレツト状にした。このペレツトを射出成
形機にかけ、つぎの各試験方法に定められた試験片を作
製し、それぞれについて体積固有抵抗値（Ω・cm）、摩
耗係数（×10-10cm3/kg・ｍ）、摩擦係数および曲げ強
度（kg/cm2）を測定し、その結果を表に併記した。Mixing ratio (volume ratio) of these raw materials as shown in the table
The mixture was mixed in, fed to a twin-screw melt extruder, melt-mixed, and then pelletized using a granulator. The pellets are applied to an injection molding machine to produce test pieces specified in the following test methods, and the volume specific resistance value (Ω · cm), wear coefficient (× 10 −10 cm 3 / kg · m), The friction coefficient and bending strength (kg / cm 2 ) were measured, and the results are also shown in the table.
試験方法はつぎのとおりである。The test method is as follows.
体積固有抵抗:JIS−K6911 摩擦係数：鈴木式摩耗試験機、速度32m/分、 PV値100kg/cm2・m／分、雰囲気ドライ、相手材SUJ−２ 摩擦係数：鈴木式摩擦試験機、速度10m/分、 PV値100kg/cm2・m／分、雰囲気ドライ、相手材SUJ−２ 曲げ強度:ASTM−D790 以上の結果から、実施例１〜５は比較例１〜３と比べ
て、上記４種類の物性値に極端なバラツキが見られず適
度の機械的強度を有し、導電性と摺動特性の両面できわ
めて優れていることが明らかである。 Volume resistivity: JIS-K6911 Friction coefficient: Suzuki abrasion tester, speed 32m / min, PV value 100kg / cm 2 m / min, atmosphere dry, mating material SUJ-2 Friction coefficient: Suzuki friction tester, speed 10 m / min, PV value 100 kg / cm 2 · m / min, atmosphere dry, mating material SUJ-2 Bending strength: ASTM-D790 From the above results, Examples 1 to 5 are compared with Comparative Examples 1 to 3 above. It is clear that the four types of physical property values do not show any extreme variations, have appropriate mechanical strength, and are extremely excellent in terms of both conductivity and sliding characteristics.
以上述べたとおり、この発明の導電性樹脂組成物は、所
定の物性で繊維状のニッケル被覆ウオラストナイトを所
定量配合したものとしたので、導電性塗料や導電性フィ
ルム等の材料として求められる抵摩擦係数の摺動特性を
満足しており、すなわち優れた機械的強度、摩擦摩耗特
性、導電性を全て兼ね備えた組成物であり、しかもウオ
ラストナイトの比重（約2.8）からの軽量化を大きく阻
害することもないので、この発明の意義はきわめて大き
いと言える。As described above, since the conductive resin composition of the present invention has a predetermined amount of fibrous nickel-coated wollastonite with a predetermined physical property, it is required as a material such as a conductive paint or a conductive film. It is a composition that satisfies the sliding characteristics of the low friction coefficient, that is, has all the excellent mechanical strength, friction and wear characteristics, and electrical conductivity, and that the weight reduction from the specific gravity of wollastonite (about 2.8) is achieved. Since it does not significantly impede, the significance of the present invention can be said to be extremely great.
Claims (1)
トを混合してなる導電性樹脂組成物において、 前記ニッケル被覆ウオラストナイトが平均繊維長10〜10
0μｍでアスペクト比が10以上の繊維状であり、かつ被
覆されるニッケル量がウオラストナイトとニッケル被覆
との合計重量の10〜70重量％であることを特徴とする導
電性樹脂組成物。1. A conductive resin composition comprising a synthetic resin mixed with nickel-coated wollastonite, wherein the nickel-coated wollastonite has an average fiber length of 10 to 10
A conductive resin composition, which is in the form of fibers having an aspect ratio of 10 or more at 0 μm, and the amount of nickel coated is 10 to 70% by weight of the total weight of wollastonite and nickel coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60168440A JPH0743965B2 (en) | 1985-07-29 | 1985-07-29 | Conductive resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60168440A JPH0743965B2 (en) | 1985-07-29 | 1985-07-29 | Conductive resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6229007A JPS6229007A (en) | 1987-02-07 |
| JPH0743965B2 true JPH0743965B2 (en) | 1995-05-15 |
Family
ID=15868154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60168440A Expired - Lifetime JPH0743965B2 (en) | 1985-07-29 | 1985-07-29 | Conductive resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743965B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0772360B2 (en) * | 1987-07-10 | 1995-08-02 | 日本鋼管株式会社 | Zn-based composite electric steel sheet |
| US4861859A (en) * | 1988-03-28 | 1989-08-29 | The United States Of America As Represented By The Secretary Of The Navy | Conductive polymers of transition-metal complexes coordinated by a diamino-dichalcogen-benzene compound |
| JPH0224358A (en) * | 1988-07-14 | 1990-01-26 | Nippon Chem Ind Co Ltd | Polymer composition containing electrolessly plated powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59168044A (en) * | 1983-03-14 | 1984-09-21 | Toyobo Co Ltd | Electrically conductive thermoplastic resin composition |
-
1985
- 1985-07-29 JP JP60168440A patent/JPH0743965B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6229007A (en) | 1987-02-07 |
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