JPH02113068A - Electrically conductive thermoplastic resin composition - Google Patents

Electrically conductive thermoplastic resin composition

Info

Publication number
JPH02113068A
JPH02113068A JP26410788A JP26410788A JPH02113068A JP H02113068 A JPH02113068 A JP H02113068A JP 26410788 A JP26410788 A JP 26410788A JP 26410788 A JP26410788 A JP 26410788A JP H02113068 A JPH02113068 A JP H02113068A
Authority
JP
Japan
Prior art keywords
thermoplastic resin
conductive material
electrically conductive
conductive
resin
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.)
Pending
Application number
JP26410788A
Other languages
Japanese (ja)
Inventor
Shinichiro Mori
慎一郎 森
Atsuhiko Murao
村尾 篤彦
Masato Hirasaka
平坂 正人
Yoshiaki Fujiwara
藤原 芳明
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP26410788A priority Critical patent/JPH02113068A/en
Publication of JPH02113068A publication Critical patent/JPH02113068A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the title composition consisting of a thermoplastic resin containing an electrically conductive material and thermoplastic resin containing no electrically conductive material, forming sea-island structure, capable of readily blending and kneading with the electrically conductive material and exhibiting sufficient conductivity at a small amount and suitable as an electromagnetic shielding material for a case unit for electronic equipment. CONSTITUTION:The aimed composition obtained by blending (A) a thermoplastic resin containing 0.1-40vol.%, preferably 0.5-30vol.% electrically conductive material (e.g., metal, ceramic fiber or carbon fiber) with (B) a thermoplastic containing no electrically conductive material in a blend ratio of the component B to the component A of 10-80vol.% and forming sea-island structure. The thermoplastic resin of component A forms sea part. The above-mentioned thermoplastics are combined so that difference of solubility parameter of the components A and B is 1-8.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、電子・電気機器の筐体等に有効な電磁波シー
ルド性を有する導電性熱可塑性樹脂組成物に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conductive thermoplastic resin composition having electromagnetic shielding properties that are effective for use in housings of electronic and electrical equipment, and the like.

[従来の技術とその課WJ] 近年、電子機器、OA機器等のプラスチック化に伴ない
それらの機器から放出される電磁波が周辺機器の誤動作
等を引き起こし大きな問題となっている。この電磁波障
害を防止する方法として、成形品の表面に塗装、メツキ
、溶射などにより導電性のコーティング層を形成する方
法がある。また、成形品中に導電性材料を配合、分散複
合化させる方法がある。
[Prior art and its section WJ] In recent years, as electronic equipment, OA equipment, etc. have become plastic, electromagnetic waves emitted from these equipment have caused malfunctions of peripheral equipment, which has become a major problem. As a method for preventing this electromagnetic interference, there is a method of forming a conductive coating layer on the surface of the molded product by painting, plating, thermal spraying, or the like. There is also a method of blending and dispersing a conductive material into a molded product.

しかし、前者の方法によるものでは、成形品表面の導電
性のコーティング層が剥離・脱落等を起こす危険性があ
り、シールド性も含めた信頼性が十分だとはいえない。
However, in the former method, there is a risk that the conductive coating layer on the surface of the molded product may peel off or fall off, and reliability including shielding performance cannot be said to be sufficient.

一方、後者の方法によるものでは、熱可塑性樹脂中に導
電性材料を複合化させる方法として、数多くの導電性材
料とそれらを複合化させる方法が検討されている。例え
ば、特開昭58−176220号では金属繊維を熱可塑
性樹脂中に容易に配合混練するため、金属繊維をあらか
じめ熱可塑性樹脂溶液またはエマルジョンで収束するこ
とが示されている。
On the other hand, in the latter method, methods of combining a large number of conductive materials with a thermoplastic resin have been studied. For example, JP-A-58-176220 discloses that in order to easily mix and knead metal fibers into a thermoplastic resin, the metal fibers are preliminarily concentrated in a thermoplastic resin solution or emulsion.

熱可塑性樹脂中に導電性材料を複合する際に、導電性材
料を多量に配合すれば、導電性は向上するものの成形加
工性等は悪化する。一方、導電性材料を少量配合させる
ものでは成形時の繊維の配向等により均一に混合して十
分な導電性を持たせることは容品ではない。また、導電
性材料を少量配合にするために無機充填物を配合する場
合も、成形加工性等が悪化するため、無機充填物を大量
に配合することはできない。
When compounding a conductive material into a thermoplastic resin, if a large amount of the conductive material is blended, although the conductivity improves, moldability and the like deteriorate. On the other hand, if a conductive material is mixed in a small amount, it is difficult to ensure sufficient conductivity by uniformly mixing the material by adjusting the orientation of the fibers during molding. Further, even when an inorganic filler is blended in order to blend a small amount of conductive material, it is not possible to blend a large amount of the inorganic filler because moldability and the like deteriorate.

本発明は、かかる点に鑑みてなされたものであり、導電
性材料の配合混線が容易で、しかも少量配合するだけで
十分な導電性を発揮する導電性熱可塑性樹脂組成物を提
供するものである。
The present invention has been made in view of these points, and it is an object of the present invention to provide a conductive thermoplastic resin composition that allows easy mixing and mixing of conductive materials and exhibits sufficient conductivity even when only a small amount is blended. be.

[課題を解決するための手段] 本発明は、導電性材料を0.1〜40容量%含有する第
1熱可塑性樹脂と、導電性材料を含有しない第2熱可塑
性樹脂とからなることを特徴とする導電性熱可塑性樹脂
組成物である。
[Means for Solving the Problems] The present invention is characterized in that it consists of a first thermoplastic resin containing 0.1 to 40% by volume of a conductive material and a second thermoplastic resin containing no conductive material. This is a conductive thermoplastic resin composition.

すなわち、本発明は、熱可塑性樹脂の非相溶性に芒目し
、第1図に示す如く海−島構造の海部分(1)にのみ導
電性材料(2)を配合し、海部分(1)での材料どうし
の接触により導電性のメカニズムが疎外されず導電性を
発揮させることにより上記の目的を達成するものである
That is, the present invention takes into account the incompatibility of thermoplastic resins, and as shown in FIG. ) The above object is achieved by exhibiting conductivity without disturbing the conductive mechanism due to the contact between the materials.

ここで、第1熱可塑性樹脂を構成する熱可塑性樹脂とし
ては、特に制限はなく使用目的等に応じて適宜選定すれ
ばよい。具体的には、例えばポリプロピレン、ポリエチ
レン、エチレン−プロピレン共重合体などのポリオレフ
ィン系樹脂;ポリスチレン、アクリロニトリル−スチレ
ン(AS)、アクリロニトリル−ブタジェン−スチレン
(ABS)などのスチレン系樹脂:ナイロン6、ナイロ
ン66、ナイロン12などのポリアミド系樹脂、ポリエ
チレンテレフタレート、ボリブチレンチレフタレートな
どのポリエステル系樹脂、ポリアセタール樹脂;ポリフ
ェニレンオキサイド樹脂;ポリカーボネート樹脂等を挙
げることができる。
Here, the thermoplastic resin constituting the first thermoplastic resin is not particularly limited and may be appropriately selected depending on the purpose of use. Specifically, for example, polyolefin resins such as polypropylene, polyethylene, and ethylene-propylene copolymers; styrene resins such as polystyrene, acrylonitrile-styrene (AS), and acrylonitrile-butadiene-styrene (ABS); nylon 6, nylon 66; , polyamide resins such as nylon 12, polyester resins such as polyethylene terephthalate and polybutylene ethylene phthalate, polyacetal resins, polyphenylene oxide resins, and polycarbonate resins.

また、導電性材料としては、一般的に使用される全ての
導電性材料が使用できる。しかし、好ましくは繊維長1
0μ〜5關、アスペクト比10〜1000の銅、黄銅、
ニッケル、アルミニウム、ステレンス繊維等の金属繊維
、セラミックス繊維、炭素繊維もしくはその粉末がよい
Further, as the conductive material, all commonly used conductive materials can be used. However, preferably the fiber length is 1
Copper, brass with an aspect ratio of 0 μ to 5, and an aspect ratio of 10 to 1000.
Metal fibers such as nickel, aluminum, and stainless steel fibers, ceramic fibers, carbon fibers, or powder thereof are preferable.

これらの導電性材料の配合量は第1熱可塑性樹脂に対し
て0.1〜40容量%、好ましくは0.5〜30容量%
である。0.1容量%未満では、導電性が不充分であり
、一方40容量%を超えると成形性が悪くなる。
The content of these conductive materials is 0.1 to 40% by volume, preferably 0.5 to 30% by volume based on the first thermoplastic resin.
It is. If it is less than 0.1% by volume, the conductivity will be insufficient, while if it exceeds 40% by volume, the moldability will be poor.

第2熱可塑性樹脂としては、第1熱可塑性樹脂と所謂海
−島構造を形成させるため、第1熱可塑性樹脂と溶解度
パラメータの差が1〜8のものを用いる。溶解度パラメ
ータが、1未満では、海−島構造を形成できず好ましく
ない。
As the second thermoplastic resin, one having a solubility parameter difference of 1 to 8 from the first thermoplastic resin is used in order to form a so-called sea-island structure with the first thermoplastic resin. If the solubility parameter is less than 1, a sea-island structure cannot be formed, which is not preferable.

この第2熱可塑性樹脂としては、第1熱可塑性樹脂と上
述の条件を満たしていれば他に制限はない。従って°、
使用目的等に応じて適・宜選定すればよい。具体的には
、例えば第1熱可塑性樹脂を構成する熱可塑性樹脂と第
2熱可塑性樹脂の組合せとして ポリアミド系樹脂−ポリオレフィン系樹脂ポリアミド系
樹脂−スチレン系樹脂 ポリアミド系樹脂−ポリエステル系樹脂ポリアミド系樹
脂−ポリカーボネート樹脂ポリアミド系樹脂−ポリアセ
タール樹脂ポリエステル系樹脂−ポリオレフィン系樹脂
ポリエステル系樹脂−スチレン系樹脂 等を挙げることができる。
There are no other restrictions on the second thermoplastic resin as long as it satisfies the conditions described above with respect to the first thermoplastic resin. Therefore °,
It may be selected as appropriate depending on the purpose of use, etc. Specifically, for example, as a combination of the thermoplastic resin constituting the first thermoplastic resin and the second thermoplastic resin, polyamide resin - polyolefin resin polyamide resin - styrene resin polyamide resin - polyester resin polyamide resin Examples include - polycarbonate resin, polyamide resin, polyacetal resin, polyester resin, polyolefin resin, polyester resin, and styrene resin.

ここで、両者の配合割合については、使用樹脂等に応じ
て異なる。すなわち、第1熱可塑性樹脂が海部分、第2
熱可塑性樹脂を島部分にするためには を満たせばよい。
Here, the blending ratio of both varies depending on the resin used and the like. That is, the first thermoplastic resin is the sea part, the second thermoplastic resin is the sea part, and the second thermoplastic resin is the sea part.
In order to make the thermoplastic resin into an island part, it is sufficient to satisfy the following conditions.

なお、η9.η8は、第1熱可塑性樹脂、第2熱可塑性
樹脂の成形時の見かけの溶融粘度、vAtV3は、それ
ぞれ第1熱可塑性樹脂、第2熱可塑性樹脂の体積分率で
ある。
Note that η9. η8 is the apparent melt viscosity of the first thermoplastic resin and the second thermoplastic resin during molding, and vAtV3 is the volume fraction of the first thermoplastic resin and the second thermoplastic resin, respectively.

両者の配合割合は一義的に決定することは困難であるが
、通常、第1熱可塑性樹脂20〜90容量%に対し第2
熱可塑性樹脂80〜10容量%の割合である。ここで、
第2熱可塑性樹脂の配合割合が10容量%未満であると
、導電性材料の節減効果がなく、一方80容量%を超え
て配合すると、海−島構造を形成せず導電性が不十分と
なる。
Although it is difficult to uniquely determine the blending ratio of the two, usually the second thermoplastic resin is 20 to 90% by volume of the first thermoplastic resin.
The proportion of thermoplastic resin is 80 to 10% by volume. here,
If the proportion of the second thermoplastic resin is less than 10% by volume, there will be no saving effect on the conductive material, while if it exceeds 80% by volume, a sea-island structure will not be formed and the conductivity will be insufficient. Become.

また、第1熱可塑性樹脂と、第2熱可塑性樹脂の混合は
種々の方法によって行うことができる。
Further, the first thermoplastic resin and the second thermoplastic resin can be mixed by various methods.

例えばスクリュー式押出機又はこれと類似の装置等を用
いて溶融混練する方法が適当である。この際、本発明の
効果に阻害しない限り通常の添加剤、例えば酸化防止剤
、熱安定剤、紫外線吸収剤、可塑剤、難燃剤、帯電防止
剤等や無機充填材を配合することができる。
For example, a method of melt-kneading using a screw extruder or similar equipment is suitable. At this time, conventional additives such as antioxidants, heat stabilizers, ultraviolet absorbers, plasticizers, flame retardants, antistatic agents, etc., and inorganic fillers can be added as long as they do not interfere with the effects of the present invention.

このようにして得られる導電性熱可塑性樹脂組成物は射
出成形法、押出成形法、プレス成形法等により成形品と
することができる。
The conductive thermoplastic resin composition thus obtained can be made into a molded article by injection molding, extrusion molding, press molding, or the like.

[作用コ 本発明に係る導電性熱可塑性樹脂組成物によれば、良好
な成形性を示し、また導電性材料の配合が少量でも均一
に優れた導電性を示す電子機器の筐体等の電磁波シール
ド材料として極めて有用である。
[Function] The conductive thermoplastic resin composition according to the present invention exhibits good moldability and exhibits uniformly excellent conductivity even when the conductive material is contained in a small amount. Extremely useful as a shielding material.

[実施例] 以下、本発明の実施例及びこれと比較するために行った
比較例について説明する。
[Example] Hereinafter, an example of the present invention and a comparative example conducted for comparison thereto will be described.

実施例1〜4、比較例5 ナイロン6樹脂98容量%、ステンレス繊維(SUS3
04.直径8μ、長さ5關)2容量96の組成で配合し
、押出機で溶融混練し第1熱可塑性樹脂ベレツトを製造
した。
Examples 1 to 4, Comparative Example 5 Nylon 6 resin 98% by volume, stainless steel fiber (SUS3
04. A first thermoplastic resin beret was produced by blending the mixture into a composition having a diameter of 8 μm and a length of 5 μm and a volume of 96 cm, and melt-kneading the mixture using an extruder.

次に、溶解度パラメータの差が約5のポリプロピレン樹
脂を第2熱可塑性樹脂ペレツトとし、第1熱可塑性樹脂
ベレツトと第2熱可塑性樹脂ペレツトを下記第1表に示
す割合で配合し、よく混合した。次に、これらで射出成
形を行い厚さ3II1mの成形品を作製した。この成形
品についてシールド効果を測定し、その結果を第1表に
併記した。
Next, a polypropylene resin having a solubility parameter difference of about 5 was used as a second thermoplastic resin pellet, and the first thermoplastic resin pellet and the second thermoplastic resin pellet were blended in the proportions shown in Table 1 below, and mixed well. . Next, these were injection molded to produce a molded product with a thickness of 3II1 m. The shielding effect of this molded article was measured, and the results are also listed in Table 1.

第    1    表 注1.第1熱可塑性樹脂;ナイロン6樹脂98容量%、
ステンレス繊維2容量%ペレット注2.第2熱可塑性樹
脂;ポリプロピレン樹脂ペレット 注3.シールド効果;アトパンテスト社製、商品名TR
−17301で俵1定した2 00 Mllzでの電界
成分シールド効果 第1表より明らかなように実施例1〜4はほぼ同じ値の
良好なシールド効果を示しているのに対し、比較例1は
シールド効果の値が低くなっている。実施例1〜4は海
−島構造を形成したのにに、Jし、比較例1は海−島構
造を形成しなかった。
Table 1 Note 1. First thermoplastic resin; nylon 6 resin 98% by volume,
Stainless steel fiber 2% by volume pellet Note 2. Second thermoplastic resin; polypropylene resin pellets Note 3. Shielding effect: Manufactured by Atopan Test Co., Ltd., product name: TR
Electric field component shielding effect at 200 Mllz with a bale of -17301.As is clear from Table 1, Examples 1 to 4 show good shielding effects with almost the same values, whereas Comparative Example 1 shows good shielding effects. Shield effect value is low. Although Examples 1 to 4 formed a sea-island structure, Comparative Example 1 did not form a sea-island structure.

比較例6〜8 実施例1〜4および比較例5に示されるのと同じ配合割
合、及び方法で第1熱可塑性樹脂ベレツトを製造した。
Comparative Examples 6-8 First thermoplastic resin belets were manufactured using the same blending ratio and method as shown in Examples 1-4 and Comparative Example 5.

次に、溶解度パラメータの差が1未満のナイロン6・6
樹脂を第2熱可塑性樹脂ペレツトとし、第1熱可塑性樹
脂ベレツトと第2熱可塑性樹脂ペレツトを下記第2表に
示す割合で配合し、実施例1〜4および比較例5と同様
の方法及び条件で成形及びApl定を行った。この結果
を第2表に併記した。
Next, nylon 6/6 with a difference in solubility parameters of less than 1
The resin was used as second thermoplastic resin pellets, the first thermoplastic resin pellets and the second thermoplastic resin pellets were blended in the proportions shown in Table 2 below, and the method and conditions were the same as in Examples 1 to 4 and Comparative Example 5. Molding and APL determination were performed. The results are also listed in Table 2.

第 表 性を発揮するものである。No. table It is something that shows one's sexuality.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明に係る導電性熱可塑性樹脂組成物の構
造を示す説明図である。 1・・・海部分、2・・・導電性材料、3・・・島部分
。 注1、第1熱可塑性樹脂;ナイロン6樹脂98容量%、
ステンレス繊維2容量%ペレット庄2.第2熱可塑性樹
脂;ナイロン6・6樹脂ベレツト 第2表より明らかなように海−島構造を形成しない比較
例6〜8は、第2熱可塑性樹脂の容量%が増すに従って
そのシールド効果の値は減少している。 [発明の効果]
FIG. 1 is an explanatory diagram showing the structure of a conductive thermoplastic resin composition according to the present invention. 1... Sea part, 2... Conductive material, 3... Island part. Note 1, first thermoplastic resin; nylon 6 resin 98% by volume,
Stainless steel fiber 2% by volume pellets 2. Second thermoplastic resin: Nylon 6.6 resin beret As is clear from Table 2, in Comparative Examples 6 to 8, which do not form a sea-island structure, as the volume % of the second thermoplastic resin increases, the value of the shielding effect increases. is decreasing. [Effect of the invention]

Claims (5)

【特許請求の範囲】[Claims] (1)導電性材料を0.1〜40容量%含有する第1熱
可塑性樹脂と、導電性材料を含有しない第2熱可塑性樹
脂とからなることを特徴とする導電性熱可塑性樹脂組成
物。
(1) A conductive thermoplastic resin composition comprising a first thermoplastic resin containing 0.1 to 40% by volume of a conductive material and a second thermoplastic resin containing no conductive material.
(2)第1熱可塑性樹脂と第2熱可塑性樹脂が海−島構
造を形成し、かつ、第1熱可塑性樹脂が海部分を形成し
ているものである請求項第1項記載の導電性熱可塑性樹
脂組成物。
(2) The conductivity according to claim 1, wherein the first thermoplastic resin and the second thermoplastic resin form a sea-island structure, and the first thermoplastic resin forms the sea part. Thermoplastic resin composition.
(3)第1熱可塑性樹脂と第2熱可塑性樹脂の溶解度パ
ラメータの差が、1〜8である請求項第1項記載の導電
性熱可塑性樹脂組成物。
(3) The conductive thermoplastic resin composition according to claim 1, wherein the difference in solubility parameters between the first thermoplastic resin and the second thermoplastic resin is 1 to 8.
(4)第1熱可塑性樹脂に対する第2熱可塑性樹脂の混
合率が、10〜80容量%である請求項第1項記載の導
電性熱可塑性樹脂組成物。
(4) The conductive thermoplastic resin composition according to claim 1, wherein the mixing ratio of the second thermoplastic resin to the first thermoplastic resin is 10 to 80% by volume.
(5)導電性材料が、金属繊維、セラミックス繊維、炭
素繊維或いはこれらの粉末のいずれかで構成されている
ものである請求項第1項記載の導電性熱可塑性樹脂組成
物。
(5) The conductive thermoplastic resin composition according to claim 1, wherein the conductive material is composed of metal fibers, ceramic fibers, carbon fibers, or powders thereof.
JP26410788A 1988-10-21 1988-10-21 Electrically conductive thermoplastic resin composition Pending JPH02113068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26410788A JPH02113068A (en) 1988-10-21 1988-10-21 Electrically conductive thermoplastic resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26410788A JPH02113068A (en) 1988-10-21 1988-10-21 Electrically conductive thermoplastic resin composition

Publications (1)

Publication Number Publication Date
JPH02113068A true JPH02113068A (en) 1990-04-25

Family

ID=17398603

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH02113068A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002292804A (en) * 2001-03-30 2002-10-09 Daicel Chem Ind Ltd Conductive sheet
US7674402B2 (en) * 2003-12-05 2010-03-09 Showa Denko K.K. Electroconductive resin composition and molded product thereof
JP2010138398A (en) * 2010-01-05 2010-06-24 Mitsubishi Engineering Plastics Corp Electromagnetic wave-inhibiting resin composition and molded article
JP2010209306A (en) * 2009-02-16 2010-09-24 Mitsubishi Chemicals Corp Conductive polyamide resin composition, method for producing conductive polyamide resin composition, injection molded article and extrusion molded article
US20110013939A1 (en) * 2009-07-16 2011-01-20 Fuji Xerox Co., Ltd. Conductive member, charging device, process cartridge, and image forming device
JP2011162754A (en) * 2010-02-15 2011-08-25 Inoac Gijutsu Kenkyusho:Kk Composite material and process for producing the same

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JPS5247843A (en) * 1975-10-15 1977-04-16 Asahi Chem Ind Co Ltd Conductive resin compositions
JPS6072935A (en) * 1983-09-30 1985-04-25 Sekisui Chem Co Ltd Electroconductive plastic composition
JPS6189258A (en) * 1984-10-08 1986-05-07 Mitsubishi Petrochem Co Ltd Production of electrically conductive resin composition
JPS624749A (en) * 1985-07-02 1987-01-10 Asahi Chem Ind Co Ltd Blend type electrically conductive composite material
JPS63207855A (en) * 1987-02-24 1988-08-29 Inoue Mtp Co Ltd Conductive polymer alloy and production thereof
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JPS5111836A (en) * 1974-07-22 1976-01-30 Teijin Ltd SEIDENSEIOFUYOSARETA GOSEIJUGOTAISEIKEIBUTSUNO SEIZOHOHO
JPS5247843A (en) * 1975-10-15 1977-04-16 Asahi Chem Ind Co Ltd Conductive resin compositions
JPS6072935A (en) * 1983-09-30 1985-04-25 Sekisui Chem Co Ltd Electroconductive plastic composition
JPS6189258A (en) * 1984-10-08 1986-05-07 Mitsubishi Petrochem Co Ltd Production of electrically conductive resin composition
JPS624749A (en) * 1985-07-02 1987-01-10 Asahi Chem Ind Co Ltd Blend type electrically conductive composite material
JPS63207855A (en) * 1987-02-24 1988-08-29 Inoue Mtp Co Ltd Conductive polymer alloy and production thereof
JPH01263156A (en) * 1988-04-15 1989-10-19 Showa Denko Kk Electrically conductive plastic

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002292804A (en) * 2001-03-30 2002-10-09 Daicel Chem Ind Ltd Conductive sheet
US7674402B2 (en) * 2003-12-05 2010-03-09 Showa Denko K.K. Electroconductive resin composition and molded product thereof
JP2010209306A (en) * 2009-02-16 2010-09-24 Mitsubishi Chemicals Corp Conductive polyamide resin composition, method for producing conductive polyamide resin composition, injection molded article and extrusion molded article
US20110013939A1 (en) * 2009-07-16 2011-01-20 Fuji Xerox Co., Ltd. Conductive member, charging device, process cartridge, and image forming device
US8275293B2 (en) * 2009-07-16 2012-09-25 Fuji Xerox Co., Ltd. Conductive member, charging device, process cartridge, and image forming device
JP2010138398A (en) * 2010-01-05 2010-06-24 Mitsubishi Engineering Plastics Corp Electromagnetic wave-inhibiting resin composition and molded article
JP2011162754A (en) * 2010-02-15 2011-08-25 Inoac Gijutsu Kenkyusho:Kk Composite material and process for producing the same

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