JPS59182819A - Electrically conductive molding material - Google Patents

Electrically conductive molding material

Info

Publication number
JPS59182819A
JPS59182819A JP5684483A JP5684483A JPS59182819A JP S59182819 A JPS59182819 A JP S59182819A JP 5684483 A JP5684483 A JP 5684483A JP 5684483 A JP5684483 A JP 5684483A JP S59182819 A JPS59182819 A JP S59182819A
Authority
JP
Japan
Prior art keywords
synthetic resin
conductive
molding material
resin layer
pellets
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.)
Granted
Application number
JP5684483A
Other languages
Japanese (ja)
Other versions
JPH0319862B2 (en
Inventor
Toshio Mayama
間山 歳夫
Hidehiro Iwase
岩瀬 英裕
Takashi Aoba
青葉 尭
Shunichiro Tanaka
俊一郎 田中
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.)
Toshiba Chemical Products Co Ltd
Toshiba Corp
Kyocera Chemical Corp
Original Assignee
Toshiba Chemical Products Co Ltd
Toshiba Corp
Toshiba Chemical Corp
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 Toshiba Chemical Products Co Ltd, Toshiba Corp, Toshiba Chemical Corp filed Critical Toshiba Chemical Products Co Ltd
Priority to JP5684483A priority Critical patent/JPS59182819A/en
Publication of JPS59182819A publication Critical patent/JPS59182819A/en
Publication of JPH0319862B2 publication Critical patent/JPH0319862B2/ja
Granted legal-status Critical Current

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  • Reinforced Plastic Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

PURPOSE:The titled molding material, consisting of master pellets obtained by using an electrically conductive filler having a carbon layer and a synthetic resin layer formed on the surface of metallic fibers and natural pellets, having improved mechanical strength and electromagnetic wave shielding effect, and containing the uniformly dispersed filler. CONSTITUTION:A molding material obtained by incorporating one pts.wt. master pellets 12 prepared by forming a carbon layer 2 and synthetic resin layer 3, preferably (modified) polystyrene resin, on the surfaces of metal fibers 1, preferably copper fibers, collecting the resultant electrically conductive filler into a bundle 10, integrating the bundle 10 with a synthetic resin layer 11, and cutting the integrated bundle 10 with preferably 1-20pts.wt. natural pellets, preferably forming a blend polymer with the synthetic resin layer 3 of the master pellets 12 such as (modified) polystyrene resin.

Description

【発明の詳細な説明】 [発明の技術分野] 本発明は、合成樹脂の強度を低下させることなく、導電
性充填側が均一に分散できかつ電磁波遮蔽効果の大きい
導電性成形材料に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a conductive molding material in which the conductive filling side can be uniformly dispersed without reducing the strength of the synthetic resin and has a large electromagnetic wave shielding effect.

[発明の技術的背景とその問題点] 近年、外部の妨害電波から電子回路を保護し、かつ発信
回路等から発生する不要な電波を外部に漏洩するのを防
止するために電子桟器の1♀体を電磁波遮蔽材料により
形成することが要求されている。 このような電磁波遮
蔽材料としては、金属や導電性合成樹脂等が挙げられる
が、前者の金属は優れた電磁波速tIk効果を有刃る反
面、重い、1〔,5価、加工性が悪い等の欠点があるた
め、導電性合成樹脂の使用が主流となりつつある。
[Technical Background of the Invention and its Problems] In recent years, in order to protect electronic circuits from external interference radio waves and to prevent unnecessary radio waves generated from transmitting circuits from leaking to the outside, electronic It is required that the body be made of electromagnetic shielding material. Examples of such electromagnetic wave shielding materials include metals and conductive synthetic resins, but while the former metals have excellent electromagnetic wave velocity tIk effects, they are heavy, 1[, pentavalent, and have poor workability, etc. Due to these drawbacks, the use of conductive synthetic resins is becoming mainstream.

合成樹脂に導電性を付与する方法とじCは、合成(か1
脂を成形後、導電性塗料を塗イ11シ/こり、金属を溶
射、メッキしたりして表面に導電層を形成する方υ、と
、合成(δ(脂内部にノJ−ボンや全屈粉末′;9の導
電性の充填材を添加する内部添加法がある。
Method C of imparting conductivity to synthetic resin is
After molding the resin, a conductive paint is applied to the surface. There is an internal addition method in which a conductive filler is added to the powder.

前者の合成樹脂表面に導電層を形成覆る方法は、工程が
増えて111産性に乏しく、また導電層が艮111間の
使用により剥がれてしまうという欠点があるため、後者
の内部添加法に期待が寄せられている。
The former method of forming and covering a conductive layer on the surface of a synthetic resin has the drawback of increasing the number of steps, resulting in poor 111 productivity, and the fact that the conductive layer peels off when used between resins, so we are looking forward to the latter internal addition method. has been received.

しかしる【がら後者の内部添加法にも次のような問題か
あった。
However, the latter internal addition method also had the following problems.

リ−なりち所望の電磁波遮蔽効果を有するために(J、
カーホンヤ金属等の導電性の充填材を多ribに配合り
−る必要があり、その結果分散不良を起こしたり、成形
品の機械的強度が低下υるという欠点かあった。 さら
に全1m等を合成樹脂に充填した揚台、合成樹脂を劣化
させるという問題があった。
In order to have the desired electromagnetic shielding effect (J,
It is necessary to mix a large amount of conductive filler such as carhonya metal, which results in poor dispersion and a reduction in the mechanical strength of the molded product. Furthermore, there was a problem in that the entire length of the platform was filled with synthetic resin, which deteriorated the synthetic resin.

いいかえれは電磁波遮蔽効果が大きく、合成樹脂との混
合が均一にでき、しかも合成樹脂の強度を低下又は劣化
させたりすることのない導fE fi成形材料が得られ
ていないのが実情であった。
The reality is that it has not been possible to obtain an FE fi molding material that has a large electromagnetic shielding effect, can be mixed uniformly with synthetic resin, and does not reduce or deteriorate the strength of the synthetic resin.

[発明の目的] 本発明はこのにうな点に対処してなされたもので、導電
性充填材を合成樹脂に均一に分散することができ、機械
的強度が高くしかも電磁波遮蔽効果の大きい導電性成形
材料を提供−づることを目的としている。
[Objective of the Invention] The present invention has been made to address these problems, and it is possible to uniformly disperse a conductive filler in a synthetic resin, and to create a conductive material that has high mechanical strength and a large electromagnetic wave shielding effect. The purpose is to provide molding materials.

、        [発明の概要コ 本発明は前記の目的を達成すべく鋭意研究を重ねた結果
、後)ホのマスターペレッ1〜とJチコラルペレットを
主成分とすることによって目的が達成できることを見出
した。
[Summary of the Invention] As a result of intensive research to achieve the above-mentioned object, it was discovered that the object could be achieved by using Master Pellet 1~ and J Chicoral Pellet as the main ingredients. .

即ち、本発明の導電性成形材料は、カーボン層を有する
金属繊維の表面に合成樹脂層を形成してなる導電性充填
材を用いるマスターペレッ1−と、ナチュラルペレット
とを主成分と−りることを特徴とする導電性成形材料で
ある。
That is, the conductive molding material of the present invention mainly consists of master pellets 1-, which use a conductive filler made by forming a synthetic resin layer on the surface of metal fibers having a carbon layer, and natural pellets. It is a conductive molding material characterized by the following.

以下図面を用いて本発明の導電イ1成形+A料をさらに
説明する。
The conductive A1 molding + A material of the present invention will be further explained below with reference to the drawings.

第1図は本発明に用いる導電↑1充填拐の断面を示して
いる。 金属繊維1の表面にカーボン層2が形成され、
さらにこのカーボン層2の表面に合成樹脂層3が形成さ
れている。 金属繊維としてはff1il 、ニッケル
、アルミニウム等が使用される。
FIG. 1 shows a cross section of a conductive ↑1 filling cell used in the present invention. A carbon layer 2 is formed on the surface of the metal fiber 1,
Furthermore, a synthetic resin layer 3 is formed on the surface of this carbon layer 2. As the metal fiber, ffil, nickel, aluminum, etc. are used.

イして金属縁Iffを被覆する合成樹脂としては、成形
品の合成樹1j;1と同種の・bのでよいが、そのほか
、成形品の合成イδ1脂ど混合することによって界面に
形成′りる第三の合成4frl脂が補強効果をもつもの
、すなわちブレンドポリマーとなるJ:うなものが好ま
しい。 例えばスチレン系ポリマーの成形品を1!1だ
い場合は、ボリフエニレンオキリ゛イト樹n17、ポリ
ブタジェン樹脂、ポリヵーボネー1〜6’J脂等を使用
すると好結果が得られる。 こうづることにより界面に
形成りる第三の合成樹脂が補強効果をもち、成形品の特
性が改善される。 第2図は第1図に示したン9電性充
填4オを用いC形成したンスクーベレッ1への長手方向
の断面図を示している。
The synthetic resin used to cover the metal edge Iff may be the same type as the synthetic resin 1j; It is preferable that the third synthetic 4frl fat has a reinforcing effect, that is, a blended polymer. For example, in the case of 1:1 styrene polymer molded articles, good results can be obtained by using polyphenylene oxylate resin N17, polybutadiene resin, polycarbonate 1-6'J resin, etc. By doing this, the third synthetic resin formed at the interface has a reinforcing effect, and the properties of the molded product are improved. FIG. 2 shows a longitudinal sectional view of the conductor plate 1 formed using the conductive filling 4 shown in FIG.

第1図に示した導電性充填材の長縁か11状のものを束
ね、それを合成樹脂層で一体化しマスターペレットとす
る。 繊維状の充填(Δは第2図で太く示しであるが実
際は細くまた本数も多い。
Eleven long edges of the conductive filler shown in FIG. 1 are bundled and integrated with a synthetic resin layer to form a master pellet. Fibrous filling (Δ is shown thick in Figure 2, but in reality it is thin and there are many fibers.

本発明に使用するナチュラルベレッ1へは、合成樹脂か
らなり前述したごときブレンドポリマーを形成するもの
が選択される。 一般の7」塑1!I−樹脂例えはポリ
スチレンの射出成形ではマスターペレット 1生母部に
対しナチュラルペレッ1〜(ポリスチレン)1〜20重
最部生母合することが好ましい。
The natural beret 1 used in the present invention is selected from a synthetic resin that forms a blended polymer as described above. General 7” plastic 1! For example, in injection molding of polystyrene resin, it is preferable that 1 to 20 layers of natural pellets (polystyrene) are combined in the most raw part to one part of the raw material of the master pellet.

マスターペレットの製造方法を第3図を用いて説明する
。 第1図で示したカーボン層2と合成樹脂層3を有づ
る長い繊維状導電性充填伺を束ね充填材化Jる。 束ね
た導電性充填材4を押出機5のタイフ6を通し合成樹脂
で束ねた導電11−充填材4を被覆成形7し、さらにカ
ッティング8してペレット9とする。 第4図はペレッ
ト9の拡大見取図で束ねた導電性充填材1oをうづく合
成イb1脂11で被覆してマスターペレッ1〜12とし
た。
The method for manufacturing master pellets will be explained using FIG. 3. A long fibrous electrically conductive filling layer having a carbon layer 2 and a synthetic resin layer 3 shown in FIG. 1 is bundled to form a filling material. The bundled conductive filler 4 is passed through a tie 6 of an extruder 5, and the conductive filler 4 bundled with a synthetic resin is coated and molded 7, and further cut 8 to form pellets 9. FIG. 4 shows an enlarged sketch of pellets 9, in which the bundled conductive fillers 1o were coated with a synthetic resin 11 to form master pellets 1 to 12.

[発明の実施例1 次に本発明の実施例について説明づる。[Embodiment 1 of the invention Next, embodiments of the present invention will be described.

直径約50μmの長尺銅繊維の表面に、厚さ約1μmの
カーボン層を設はポリスチレン変性のポリフェニレンA
キリーイド樹脂をディップ塗イ0にJζり被覆した。 
このようにして得られた導電性充填材を束ねて合成樹脂
をうづく被覆一体化して直径約2…nlとし、長さ約5
mmにカッティングしたものをマスターペレッl〜とし
た。
A carbon layer with a thickness of about 1 μm is formed on the surface of a long copper fiber with a diameter of about 50 μm, which is made of polystyrene-modified polyphenylene A.
Killyid resin was dip-coated onto A0.
The conductive filler thus obtained is bundled and integrated with a synthetic resin coating to have a diameter of about 2...nl and a length of about 5.
The pellets cut into mm were designated as master pellets.

このマスターペレット 1容に対し9容のポリスチレン
のプヂュラルペレットを機械的に混合して導電性成形1
Δ科を製造した。 得られた成形拐引31を使用してB
”1出成形し厚さ3mmの板状成形品を得lC8成形品
の電磁波遮蔽効果は5(IOMH7で40d3であった
。 成形品は導電性充填材が均一に分散しており、成形
品の強度の低下や劣化はみられなかった。
Conductive molding 1 by mechanically mixing 9 volumes of polystyrene plastic pellets for 1 volume of this master pellet.
The Δ family was produced. B using the obtained molded ablation 31
"The electromagnetic shielding effect of the 1C8 molded product was 5 (40d3 for IOMH7). The conductive filler was uniformly dispersed in the molded product, and the molded product had a conductive filler uniformly dispersed. No decrease in strength or deterioration was observed.

[発明の効果] 以上説明したように本発明の導電性成形飼料はカーホン
層C被覆された金属繊維を使用しているので電磁波遮蔽
効果が非常に大ぎく、しかも導電性充填材の最外層は母
材合成樹脂どの親和性が良好であり、又ブレンドポリマ
ーを形成しやすい合成樹脂で形成されているので均一に
合成樹脂に分散して強度の大きいしかも劣化のない合成
樹脂成形品を製造することができる。
[Effects of the Invention] As explained above, since the conductive molded feed of the present invention uses metal fibers coated with carphone layer C, the electromagnetic wave shielding effect is very large.Moreover, the outermost layer of the conductive filler is Since the base material synthetic resin has good affinity with the synthetic resin and is easy to form a blend polymer, it can be uniformly dispersed in the synthetic resin to produce synthetic resin molded products with high strength and no deterioration. I can do it.

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

第1図は本発明に使用する導電性充填材の断面図、第2
図はマスターペレットの長手方向断面図、第3図は本発
明に用いるマスターペレッ1〜の製造方法を示す図、第
4図はマスターペレットの拡大見取図である。 1・・・金属繊維、 2・・・カーボン層、 3・・・
合成樹脂層、 4,10・・・束ねた導電性充填材、 
5・・・押出機、 6・・・ダイス、 7.11・・・
合成樹脂被覆、 8・・・カッティング、 9,12・
・・マスターペレット。
Figure 1 is a cross-sectional view of the conductive filler used in the present invention, Figure 2 is a cross-sectional view of the conductive filler used in the present invention.
The figure is a longitudinal sectional view of the master pellet, FIG. 3 is a diagram showing a method for manufacturing master pellets 1 to 1 used in the present invention, and FIG. 4 is an enlarged sketch of the master pellet. 1... Metal fiber, 2... Carbon layer, 3...
Synthetic resin layer, 4, 10... bundled conductive filler,
5... Extruder, 6... Dice, 7.11...
Synthetic resin coating, 8... Cutting, 9, 12.
...Master pellet.

Claims (1)

【特許請求の範囲】 1 カーボン層を右づる金属繊維の表面に合成樹脂層を
形成してなる導電性充填月を用いるマスターペレットと
、ナチュラルペレッ1〜どを主成分とり−ることを特徴
とする導電性成形材料。 2 マスターへ1ノツトは、長繊’cIE状の導電佃充
填月を束ねた表面に合成樹脂層を形成−1木化し、ベレ
ン1〜状に切断したものであることを特徴とする特許請
求の範囲第1項記載の導電I11成形月利。 3 マスターペレットの合成樹脂層はポリスチレン又は
ボリスヂレン変性樹脂、金属繊維はj:Naha Il
l、そしてナチュラルペレット111ボリスヂレン又は
ボリスヂレン変性樹脂のベレッ1−であることを特徴と
する特b21晶求の範囲第1jp又は第2項記載の導電
性成形材料。 4 マスターペレットの合成樹脂層とナチュラルペレッ
トの合成樹脂とがブレンドポリマーを形成することを特
徴とする特許′[請求の範Il]1第1項乃至第3項い
ずれか記載の導電性成形材料。 5 金属繊維は、銅51if111であることを特徴と
する特許請求の範囲第1項乃至第4項いずれか記載の導
電性成形材料。
[Claims] 1. A master pellet using a conductive filling material formed by forming a synthetic resin layer on the surface of a metal fiber that holds a carbon layer, and natural pellets 1 to 1 as main components. conductive molding material. 2. One knot to the master is made by forming a synthetic resin layer on the surface of a bundle of conductive Tsukuji-filled moons in the form of long fibers. Conductive I11 molding monthly rate as described in range 1. 3 The synthetic resin layer of the master pellet is polystyrene or borisdyrene modified resin, and the metal fiber is j: Naha Il.
The conductive molding material according to item 1 or 2 of the scope of the crystallization request b21, characterized in that it is natural pellets 111 boris dyrene or boris dyrene modified resin Berets 1-. 4. The conductive molding material according to any one of Items 1 to 3 of Patent '[Claim Il] 1, wherein the synthetic resin layer of the master pellet and the synthetic resin of the natural pellet form a blend polymer. 5. The conductive molding material according to any one of claims 1 to 4, wherein the metal fiber is copper 51if111.
JP5684483A 1983-04-02 1983-04-02 Electrically conductive molding material Granted JPS59182819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5684483A JPS59182819A (en) 1983-04-02 1983-04-02 Electrically conductive molding material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5684483A JPS59182819A (en) 1983-04-02 1983-04-02 Electrically conductive molding material

Publications (2)

Publication Number Publication Date
JPS59182819A true JPS59182819A (en) 1984-10-17
JPH0319862B2 JPH0319862B2 (en) 1991-03-18

Family

ID=13038712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5684483A Granted JPS59182819A (en) 1983-04-02 1983-04-02 Electrically conductive molding material

Country Status (1)

Country Link
JP (1) JPS59182819A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61296066A (en) * 1985-06-24 1986-12-26 Toshiba Chem Corp Electrically-conductive molding material
WO1987006178A1 (en) * 1986-04-17 1987-10-22 The Furukawa Electric Co., Ltd. Pellet of electromagnetic wave shielding material and producing thereof
US4960642A (en) * 1986-04-17 1990-10-02 The Furukawa Electric Co., Ltd. Pellets for making electromagnetic wave shielding material and method for manufacturing the same
JPH0531183U (en) * 1991-09-27 1993-04-23 古河電気工業株式会社 Mold for insulator molding of power cable connection

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61296066A (en) * 1985-06-24 1986-12-26 Toshiba Chem Corp Electrically-conductive molding material
JPH055263B2 (en) * 1985-06-24 1993-01-21 Toshiba Chem Prod
WO1987006178A1 (en) * 1986-04-17 1987-10-22 The Furukawa Electric Co., Ltd. Pellet of electromagnetic wave shielding material and producing thereof
US4960642A (en) * 1986-04-17 1990-10-02 The Furukawa Electric Co., Ltd. Pellets for making electromagnetic wave shielding material and method for manufacturing the same
JPH0531183U (en) * 1991-09-27 1993-04-23 古河電気工業株式会社 Mold for insulator molding of power cable connection

Also Published As

Publication number Publication date
JPH0319862B2 (en) 1991-03-18

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