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JPS626285B2 - - Google Patents
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JPS626285B2 - - Google Patents

Info

Publication number
JPS626285B2
JPS626285B2 JP56071107A JP7110781A JPS626285B2 JP S626285 B2 JPS626285 B2 JP S626285B2 JP 56071107 A JP56071107 A JP 56071107A JP 7110781 A JP7110781 A JP 7110781A JP S626285 B2 JPS626285 B2 JP S626285B2
Authority
JP
Japan
Prior art keywords
powder
conductive
urethane prepolymer
water
parts
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
Application number
JP56071107A
Other languages
Japanese (ja)
Other versions
JPS57185602A (en
Inventor
Katsuhiro Yamamoto
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.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial 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 Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP56071107A priority Critical patent/JPS57185602A/en
Publication of JPS57185602A publication Critical patent/JPS57185602A/en
Publication of JPS626285B2 publication Critical patent/JPS626285B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polyurethanes Or Polyureas (AREA)
  • Conductive Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

【発明の詳細な説明】 本発明は柔軟な導電性材料の製法に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for making flexible conductive materials.

従来、電導性粉末をゴム類に配合してなる導電
性材料として種々のものが知られており、一般に
その製法は、前記粉末をゴム類に混練りして行わ
れている。
Conventionally, various conductive materials are known that are made by blending conductive powder with rubber, and the manufacturing method thereof is generally carried out by kneading the powder with rubber.

しかして、電導性粉末とゴム類との混合は、物
理的に行われているために、導電性を向上させよ
うと、多量の粉末を配合すると、粉末が均一に分
散されなかつたり、硬くなりすぎるという問題が
あ。
However, since the mixing of conductive powder and rubber is done physically, if a large amount of powder is mixed in an attempt to improve conductivity, the powder may not be dispersed uniformly or become hard. The problem is that it's too much.

本発明者はかかる従来技術の情況に鑑み鋭意研
究の結果、水とウレタンプレポリマーとの混合系
を用いることにより、粉末の分散度が高くしかも
柔軟性に優れる導電性材料が得られることを見い
出し、本発明に至つたものである。
In view of the state of the prior art, as a result of intensive research, the present inventor discovered that by using a mixed system of water and urethane prepolymer, a conductive material with a high degree of powder dispersion and excellent flexibility can be obtained. , which led to the present invention.

即ち本発明は、電導性粉末と、水と、ウレタン
プレポリマーとを混合撹拌してゲル化させると共
に乾燥することを特徴とする低発泡状の導電性材
料の製法を提供するものである。
That is, the present invention provides a method for producing a low-foam conductive material, which is characterized by mixing and stirring conductive powder, water, and urethane prepolymer to form a gel, and then drying.

本発明を実施するに当つて用いられる電導性粉
末としては、アセチレンブラツク、チヤネルブラ
ツク、フアーネスブラツクの如き電導性カーボ
ン、アルミニユウム粉、鉄粉、銅粉の如き金属粉
などが挙げられる。
Examples of the conductive powder used in carrying out the present invention include conductive carbon such as acetylene black, channel black, and furnace black, and metal powder such as aluminum powder, iron powder, and copper powder.

またウレタンプレポリマーとしては、末端に2
個以上の水酸基を有するポリオレフインオキサイ
ド化合物と2個以上のイソシアネート基を有する
ポリイソシアネート化合物とを反応させた、イソ
シアネート基を有するプレポリマー(イソシアネ
ート濃度が3〜7%であることが低発泡状物を得
るうえから好ましい)が使用される。この場合の
ポリオレフインオキサイド化合物は、一般式HO
(CH2CH2O)×H(×は22〜455)で表わされるポ
リエチレングリコール及びグリセリン、トリメチ
ロールプロパン、トリメチロールエタン、1、
2、6―ヘキサントリオール、ペンタエリスリー
トール、ソルビトール、シユークローズ、α―メ
チルグリコシトの如きポリオール類、又はエチレ
ンジアミン、ジエチレントリアミン、ピペラジ
ン、メチルアミン、n―ブチルアミンの如きアミ
ン類にエチレンオキサイドを長鎖状に付加反応さ
せた化合物、或いは上記のポリオール類又はアミ
ン類にポリプロピレンオキサイド又はポリブチレ
ンオキサイドを共重合反応させた化合物である。
またポリイソシアネート化合部には、トリレンジ
イソシアネート、ジフエニルメタンジイソシアネ
ート、ジフエニルジイソシアネート、ナフタリン
ジイソシアネート、キシレンジイソシアネートな
どが挙げられる。
In addition, as a urethane prepolymer, 2
A prepolymer having an isocyanate group, which is obtained by reacting a polyolefin oxide compound having 1 or more hydroxyl groups with a polyisocyanate compound having 2 or more isocyanate groups (an isocyanate concentration of 3 to 7% produces a low-foamed product). (preferable in terms of availability) is used. The polyolefin oxide compound in this case has the general formula HO
Polyethylene glycol and glycerin represented by (CH 2 CH 2 O)×H (× is 22 to 455), trimethylolpropane, trimethylolethane, 1,
Ethylene oxide is added to polyols such as 2,6-hexanetriol, pentaerythritol, sorbitol, seuucrose, and α-methylglycoside, or amines such as ethylenediamine, diethylenetriamine, piperazine, methylamine, and n-butylamine. This is a compound obtained by a chain addition reaction, or a compound obtained by copolymerizing polypropylene oxide or polybutylene oxide with the above polyols or amines.
Examples of the polyisocyanate compound include tolylene diisocyanate, diphenylmethane diisocyanate, diphenyl diisocyanate, naphthalene diisocyanate, xylene diisocyanate, and the like.

本発明の製法は、電導性粉末と、水と、ウレタ
ンプレポリマーとを混合撹拌してゲル化させると
共に乾燥するものであるが、好ましくは電導性粉
末と水とを予め混合し、これにウレタンプレポリ
マーを添加して充分に混合撹拌し、型枠内又は担
持体上でゲル化させると共に乾燥することによつ
て、良好な導電性材料が得られるものである。
In the manufacturing method of the present invention, conductive powder, water, and urethane prepolymer are mixed and stirred to form a gel and dried. Preferably, conductive powder and water are mixed in advance, and urethane prepolymer is added to the mixture. A good electrically conductive material can be obtained by adding a prepolymer, thoroughly mixing and stirring, gelling it in a mold or on a carrier, and drying it.

電導性粉末を系に均一分散させるために、必要
に応じて界面活性剤を用いることができる。
A surfactant can be used as necessary to uniformly disperse the conductive powder in the system.

水とウレタンプレポリマーとは、30〜97:3〜
70(重量部)の範囲で用いられ、前記界面活性剤
は10重量部以下(0.1重量部以上)の量とされ
る。電導性粉末の配合量は目的とする導電度合に
よつて決められるものであり、導電性材料中に10
〜70重量%の範囲となるように調整される。
Water and urethane prepolymer: 30-97:3
70 parts by weight, and the surfactant is used in an amount of 10 parts by weight or less (0.1 parts by weight or more). The amount of conductive powder to be blended is determined by the desired degree of conductivity.
It is adjusted to be in the range of ~70% by weight.

本発明の製法に従えば、混合物を所定形状の型
に流し込んでゲル化させることができるので、任
意の形状の導電性材料を得ることができ、また電
導性粉末が均一に分散していると共にウレタンプ
レポリマー混合組成物のゲル化後の乾固処理によ
り粉末が高密度化されるので良好な導電性を有す
る低発泡状の柔軟な材料を得ることができるとい
う特徴を有する。従つて例えば医療用電気材料
(電極)として有用である。
According to the manufacturing method of the present invention, the mixture can be poured into a mold with a predetermined shape and gelled, so a conductive material of any shape can be obtained, and the conductive powder is uniformly dispersed. The powder is densified by drying the urethane prepolymer mixed composition after gelation, so that it is possible to obtain a low-foam, flexible material with good electrical conductivity. Therefore, it is useful as, for example, a medical electrical material (electrode).

以下本発明の実施例を示す。文中部とあるのは
重量部を意味する。
Examples of the present invention will be shown below. The text middle part means the weight part.

実施例 水100部に対して電導性カーボンブラツク8部
及び界面活性剤2部を夫々添加して充分に混合す
る。
Example 8 parts of conductive carbon black and 2 parts of surfactant are added to 100 parts of water and mixed thoroughly.

この混合物に、ポリエチレングリコールとトリ
レンジイソシアネートとのウレタンプレポリマー
化合物(イソシアネート濃度4.2%)12部を配合
し、充分に混合撹拌して、型に流し込み、ゲル化
させ風乾して導電性材料を得た。
To this mixture, 12 parts of a urethane prepolymer compound (isocyanate concentration: 4.2%) of polyethylene glycol and tolylene diisocyanate is blended, thoroughly mixed and stirred, poured into a mold, gelled, and air-dried to obtain a conductive material. Ta.

この導電性材料の電気抵抗値は数10Ω/□であ
り、良好な柔軟性を有していた。
The electrical resistance value of this conductive material was several tens of Ω/□, and it had good flexibility.

Claims (1)

【特許請求の範囲】[Claims] 1 電導性粉末と、水と、ウレタンプレポリマー
とを混合撹拌してゲル化させると共に乾燥するこ
とを特徴とする低発泡状の導電性材料の製法。
1. A method for producing a low-foam conductive material, which comprises mixing and stirring conductive powder, water, and urethane prepolymer to form a gel, and then drying.
JP56071107A 1981-05-11 1981-05-11 Method of producing conductive material Granted JPS57185602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56071107A JPS57185602A (en) 1981-05-11 1981-05-11 Method of producing conductive material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071107A JPS57185602A (en) 1981-05-11 1981-05-11 Method of producing conductive material

Publications (2)

Publication Number Publication Date
JPS57185602A JPS57185602A (en) 1982-11-15
JPS626285B2 true JPS626285B2 (en) 1987-02-10

Family

ID=13450993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071107A Granted JPS57185602A (en) 1981-05-11 1981-05-11 Method of producing conductive material

Country Status (1)

Country Link
JP (1) JPS57185602A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242682A (en) * 1990-04-06 1991-10-09 Belzona Molecular Ltd Coating composition

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0791453B2 (en) * 1986-10-08 1995-10-04 株式会社スリ−ボンド Conductive resin composition
US4886626A (en) * 1987-05-19 1989-12-12 Crest-Foam Corporation Conductive polyurethane foam compositions containing tetralyanoethylene and method
US5028355A (en) * 1987-05-19 1991-07-02 Crest-Foam Corporation Conductive polyurethane foam containing picric acid and analog thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242682A (en) * 1990-04-06 1991-10-09 Belzona Molecular Ltd Coating composition

Also Published As

Publication number Publication date
JPS57185602A (en) 1982-11-15

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