JPS61101554A - Preparation of electrically conductive resin composition - Google Patents

Preparation of electrically conductive resin composition

Info

Publication number
JPS61101554A
JPS61101554A JP22190884A JP22190884A JPS61101554A JP S61101554 A JPS61101554 A JP S61101554A JP 22190884 A JP22190884 A JP 22190884A JP 22190884 A JP22190884 A JP 22190884A JP S61101554 A JPS61101554 A JP S61101554A
Authority
JP
Japan
Prior art keywords
electrically conductive
carbon black
black
compsn
electrical conductivity
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
JP22190884A
Other languages
Japanese (ja)
Inventor
Kiyoshi Nakayama
清 中山
Kunio Iwasaki
邦男 岩崎
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co 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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP22190884A priority Critical patent/JPS61101554A/en
Publication of JPS61101554A publication Critical patent/JPS61101554A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)

Abstract

PURPOSE:To obtain an electrically conductive resin compsn. which has excellent electrical conductivity and does not cause changes in electrical conductivity even when subjected to a heat cycle, by mixing electrically conductive oil furnace black having specified oil absorption and surface area with a thermoplastic resin. CONSTITUTION:Oil furnace black (e.g. Toka Black #4500, a product of Tokai Carbo K.K.) having DBP absorption of 130 to 200ml/100g (JIS K6221-1970) and a BET surface area (N2) of less than 100m<2>/g is used. Said carbon black is mixed with a thermoplastic resin such as polyethylene, ethylene/vinyl acetate copolymer or ethylene/propylene rubber to obtain the desired electrically conductive compsn. The compsn. does not cause lowering in electrical conductivity even when high a mechanical shearing force is applied thereto during kneading or extrusion coating.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は熱可塑性ゴム又はプラスチック組成物を用い
た導電性樹脂組成物の調製方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a method for preparing a conductive resin composition using a thermoplastic rubber or plastic composition.

(従来の技術) 従来、熱可塑性樹脂に所望の導電性を付与させるため4
とは導電性カーボンブラック、例えば導電性ファーネス
ブラック、アセチレンブラック等を、該熱可塑性樹脂基
材100重量部に対して、概ね、40〜80重量部とい
うようにかなりの多量の割合で機械的に配今混練するの
が一般的であった。
(Prior art) Conventionally, in order to impart desired conductivity to thermoplastic resin, 4
What is meant by mechanically adding conductive carbon black, such as conductive furnace black, acetylene black, etc., in a fairly large amount, approximately 40 to 80 parts by weight, to 100 parts by weight of the thermoplastic resin base material. It was common to knead the mixture immediately.

(発明が解決しようする問題点) かかる従来の導電性樹脂混和物は、上記の如き配合1m
l!l!する導電性カーボンブラックに特別の配慮がな
されていないために、岬えばバンバリーミキサ−等の屁
諌機マ機械的に大きな剪断力で混線される際や、後にケ
ーブル等に押出機で押出成形被覆する際に、カーボンブ
ラック粒子のつながり(ストラフチャ)が切断され希望
の導電輝が低下するという問題があった。
(Problems to be Solved by the Invention) Such conventional conductive resin mixtures are
l! l! Because no special consideration has been given to the conductive carbon black, it is difficult to use when the wires are mixed mechanically with large shearing forces, such as in a Banbury mixer, or when the wires are later extruded into cables, etc. using an extruder. When doing so, there was a problem in that the connections (straftures) between carbon black particles were broken, resulting in a decrease in the desired conductive brightness.

そのためにより多量のカーボンブラックを配合しなけれ
ばならず、これは反面半導電性混和物の成形加工性を著
しく低下させてしまう他の問題が免がれなかった。
For this purpose, a larger amount of carbon black must be blended, which, on the other hand, inevitably causes other problems such as significantly lowering the moldability of the semiconductive mixture.

(問題点を解決するための手段) ここに発明者等はかかる問題を解忰害べく鋭意検討を重
ねた結果厳しく選択された特定のカーボンブラックを用
いることにより上記の問題が解決されることを見出しこ
の発明を完成した。
(Means for Solving the Problems) The inventors hereby propose that the above problems can be solved by using a specific carbon black that has been carefully selected as a result of intensive studies to solve the problems. Heading completed this invention.

即ち本発明は、熱i塑性樹脂に導電性カーボンブラック
を混和して導電性樹脂組成物を得るに際し、上記導電性
カーボンブラックとして、JISK6221−1970
によるDBP吸油量が130m17100 g以上20
0 m171G”O’g未満、BET式表面積(N、)
が100n’/g未満であるオイルファーネスブラック
を配合することを特徴とする導電性樹脂組成物の調製方
法である。
That is, in the present invention, when a conductive carbon black is mixed with a thermo-i plastic resin to obtain a conductive resin composition, JIS K6221-1970 is used as the conductive carbon black.
DBP oil absorption amount of 130m17100g or more20
Less than 0 m171G”O'g, BET surface area (N,)
This is a method for preparing a conductive resin composition, which comprises blending an oil furnace black having a particle diameter of less than 100 n'/g.

この発明において、基材としての熱可塑性樹脂(−一般
にこの種の目的1こ使用される熱可塑性のゴム又はプラ
スチックが広く用いられるのであり、具体的には低、中
、高密度ポリエチレン、エチレン−酢酸ビニル共重合体
、エチレン−アクリル酸共重合体、塩素化ポリエチレン
、ポリ塩化ビニル、ポリエチレン等の熱可塑性樹脂、エ
チレンブ四ピレンゴム、クロルスルホン化ポリエチレン
等のゴム弾性体などの単独または2g1以上の混和物を
含むものである。
In this invention, thermoplastic resins (generally thermoplastic rubbers or plastics used for this type of purpose) are widely used as the base material, specifically low, medium, and high density polyethylene, ethylene, etc. Thermoplastic resins such as vinyl acetate copolymer, ethylene-acrylic acid copolymer, chlorinated polyethylene, polyvinyl chloride, polyethylene, rubber elastic bodies such as ethylene butetrapyrene rubber, chlorosulfonated polyethylene, etc. alone or mixed in amounts of 2g1 or more It includes things.

そして配合される導電性カーボンブラックとして、JI
S  K6221−1970によるDBP吸油量が13
−Oml/100 g以上200ml7100g未満、
BET式表面積(N2)が100m’/g未満であるオ
イルファーネスブラックを選択して用いるのである。
And as the conductive carbon black to be blended, JI
DBP oil absorption by S K6221-1970 is 13
-Oml/100g or more 200ml less than 7100g,
An oil furnace black having a BET surface area (N2) of less than 100 m'/g is selected and used.

かかる特定されたオイルファーネスブラックとしては具
体的には商品名トーカブラック#4500(東海カーボ
ン社製ンがある。
A specific example of such specified oil furnace black is Toka Black #4500 (trade name, manufactured by Tokai Carbon Co., Ltd.).

この発−で用いる導電性カーボンブラックを上述のよう
に、そのDBP吸油量を130ml/100g、以上2
00ml/100g未満、BET式表面積(N2)が、
100 m1g未満のオイルファーネスブラックIζ限
定した理由は、この範囲にあるカーボンブラックの使用
により、上述の大きな機械的剪断力による混練時及び押
出成形被覆時等において組成物の導電性の低下が殆んど
認められないからである。
As mentioned above, the conductive carbon black used in this development has a DBP oil absorption of 130 ml/100 g, or more than 2
Less than 00ml/100g, BET surface area (N2) is
The reason for limiting the amount of oil furnace black Iζ to less than 100 ml is that by using carbon black within this range, the conductivity of the composition will hardly decrease during kneading and extrusion coating due to the above-mentioned large mechanical shearing force. This is because it is not recognized.

導電性カーボンブラックの上記DBP吸油量が130m
l/100 g未満のものではカーボンブラック粒子5
のつながり (ストラフ針ヤ)が悪く、又導電性も悪゛
<、一方、DBP吸油量が200*j/100g以上で
はカーボンブラック粒子゛の1つな・がりが発達はして
いるものの、逆に大きな機械的剪断力を受けるとストラ
フチャが切断しやすく、これにより導電性が著しく低下
し、更に′舊ET式表面積(N2)が、100rn’/
g以上のカーボンブラックば吸i7i性が大きくこのた
め組成物の押出成形時に発泡等を・生じいづれも本発明
の目的を達成することができない。
The above DBP oil absorption of conductive carbon black is 130m
If less than 1/100 g, carbon black particles 5
On the other hand, when the DBP oil absorption amount exceeds 200*j/100g, although one link of the carbon black particles is developed, the conductivity is also poor. When subjected to large mechanical shear forces, the strutures tend to break, which significantly reduces the conductivity, and furthermore, the ET surface area (N2) decreases to 100rn'/
The carbon black has a large i7i property when the composition is extruded, which causes foaming and the like during extrusion molding of the composition, making it impossible to achieve the object of the present invention.

この発明において、導電性カーボンブラックの基材樹脂
に対する混入側41よ目的とする導電度により決定され
る。    ゛ そして使用目的等に応じて他の酸化防止剤、滑剤、有機
過酸化物の適量はこれを随時添加して差支えない。
In this invention, the desired conductivity is determined by the mixing side 41 of the conductive carbon black with respect to the base resin. ``Additionally, appropriate amounts of other antioxidants, lubricants, and organic peroxides may be added at any time depending on the purpose of use.

(実施例) 次にこの発明を具体的な実施例により詳細に説明する− 次表の配合組成により常法の、舞<樹脂中に導電性カー
ボンブラックを混線Q導電atM脂組成物を得た。
(Example) Next, this invention will be explained in detail with reference to specific examples. A conductive atM resin composition was obtained by mixing conductive carbon black in a resin using a conventional method using the formulation shown in the following table. .

これらの導電性樹脂組成物につい<yの成形物及び被覆
成形体について緒特性を調べ結果を同表に示し−た。
Regarding these conductive resin compositions, the characteristics of molded products and coated molded products of <y were investigated and the results are shown in the same table.

上表の結果によれば上記のような特定の導電性カーボン
ブラックを混入した実施例品はいづれも、上述の緒特性
がバランスして良好な結果を与えたのに対し、比較例品
は、例えば比較例1は、押出成形後の固有抵抗が大きく
、また比較例2〜4は押出外観が悪かった。
According to the results in the above table, all of the example products mixed with the above-mentioned specific conductive carbon black gave good results with the above-mentioned characteristics being well balanced, whereas the comparative example products had the following characteristics: For example, Comparative Example 1 had a large specific resistance after extrusion molding, and Comparative Examples 2 to 4 had poor extruded appearance.

(発明の効果) 以上の説明及び実施例の結果から明らかなように本発明
方法による導電性樹脂組成物は、体積固有抵抗が低く、
即ち導電性が良く、シかもヒートサイクル等を受けても
導電性が変化しない実用的に優れたものであり、その工
業的利用効果は大きい。
(Effects of the Invention) As is clear from the above explanation and the results of the examples, the conductive resin composition produced by the method of the present invention has a low volume resistivity,
In other words, it has good conductivity and is practically excellent in that the conductivity does not change even when subjected to heat cycles, etc., and its industrial use effect is great.

Claims (1)

【特許請求の範囲】[Claims] 熱可塑性樹脂に導電性カーボンブラックを混和して導電
性樹脂組成物を得るに際し、上記導電性カーボンブラッ
クとして、JIS K6221−1970によるDBP
吸油量が130ml/100g以上200ml/100
g未満、BET式表面積(N_2)が100m^2/g
未満であるオイルフアーネスブラツクを配合することを
特徴とする導電性樹脂組成物の調製方法。
When mixing conductive carbon black with a thermoplastic resin to obtain a conductive resin composition, DBP according to JIS K6221-1970 is used as the conductive carbon black.
Oil absorption amount is 130ml/100g or more 200ml/100
Less than g, BET surface area (N_2) is 100m^2/g
1. A method for preparing a conductive resin composition, which comprises blending an oil furnace black having a content of less than 10%.
JP22190884A 1984-10-24 1984-10-24 Preparation of electrically conductive resin composition Pending JPS61101554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22190884A JPS61101554A (en) 1984-10-24 1984-10-24 Preparation of electrically conductive resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22190884A JPS61101554A (en) 1984-10-24 1984-10-24 Preparation of electrically conductive resin composition

Publications (1)

Publication Number Publication Date
JPS61101554A true JPS61101554A (en) 1986-05-20

Family

ID=16774037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22190884A Pending JPS61101554A (en) 1984-10-24 1984-10-24 Preparation of electrically conductive resin composition

Country Status (1)

Country Link
JP (1) JPS61101554A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006052276A (en) * 2004-08-10 2006-02-23 Toyo Ink Mfg Co Ltd Method for producing conductive resin composition, conductive resin composition and molded article
JP2012107243A (en) * 1997-12-23 2012-06-07 Arkema France Antistatic composition based on polyamide
WO2018131506A1 (en) * 2017-01-12 2018-07-19 住友電気工業株式会社 Semi-electroconductive resin composition, composite material, and method for producing electric power cable
JP2020012097A (en) * 2018-07-05 2020-01-23 キヤノン株式会社 Resin composition, resin molding, resin laminate, cartridge, image forming apparatus, method for producing resin molding, method for producing resin laminate, and method for manufacturing cartridge
US11619892B2 (en) 2018-07-05 2023-04-04 Canon Kabushiki Kaisha Resin molded product, resin laminate, cartridge, image-forming apparatus, method for manufacturing resin molded product, method for manufacturing resin laminate, and method for manufacturing cartridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012107243A (en) * 1997-12-23 2012-06-07 Arkema France Antistatic composition based on polyamide
JP2006052276A (en) * 2004-08-10 2006-02-23 Toyo Ink Mfg Co Ltd Method for producing conductive resin composition, conductive resin composition and molded article
WO2018131506A1 (en) * 2017-01-12 2018-07-19 住友電気工業株式会社 Semi-electroconductive resin composition, composite material, and method for producing electric power cable
JP2020012097A (en) * 2018-07-05 2020-01-23 キヤノン株式会社 Resin composition, resin molding, resin laminate, cartridge, image forming apparatus, method for producing resin molding, method for producing resin laminate, and method for manufacturing cartridge
US11619892B2 (en) 2018-07-05 2023-04-04 Canon Kabushiki Kaisha Resin molded product, resin laminate, cartridge, image-forming apparatus, method for manufacturing resin molded product, method for manufacturing resin laminate, and method for manufacturing cartridge

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