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Conductive silicone composition and method for producing the same

A conductive and silicone technology, applied in the field of addition-curable conductive silicone compositions and their preparation, can solve the problems of shape collapse, non-curing over time, deterioration of platinum group catalyst curability, etc., and achieve good shape retention , The effect of good storage stability

Inactive Publication Date: 2013-04-17
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when adding metal powder such as silver powder or copper powder, or a silver-plated filler to the addition-curable silicone rubber composition, there is a problem that the curability is deteriorated due to the action of the platinum group catalyst, or it becomes uncured over time.
[0004] In addition, the highly conductive silicone rubber composition is mainly used for the electrical connection between conductors, but in order to be highly filled with silver powder, it is necessary to use a low-viscosity silicone rubber composition that can be coated, and when coating with a dispenser or screen printing , having problems with shape collapse

Method used

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  • Conductive silicone composition and method for producing the same
  • Conductive silicone composition and method for producing the same
  • Conductive silicone composition and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4、 comparative example 1～4

[0103] Silicone rubber compositions were prepared by uniformly mixing the ingredients shown below in the compounding amounts shown in Tables 1 and 2 with an autorotation and revolution mixer (Awatori Rentaro) manufactured by Shinky Corporation. In Examples and Comparative Examples, the viscosity is a value measured at 23° C. with an E-type viscometer (RE80 manufactured by Toki Sangyo Co., Ltd.).

[0104] (A) Methyl vinyl polysiloxane with 2 vinyl groups directly bonded to silicon atoms in one molecule and a viscosity of 600mPa·s

[0105] (B-1) Methylhydropolysiloxane having a viscosity of 5 mPa·s at 23°C and a hydrogen gas generation rate of 350 ml / g

[0106] (B-2) SiH group-containing compound represented by formula (4)

[0107] [chemical formula 3]

[0108]

[0109] (C) Silver powder (AgC-237) manufactured by Fukuda Metal Foil Powder Co., Ltd. was washed with acetone and dried

[0110] (D) Denka Black HS-100 manufactured by Denki Kagaku Kogyo Co., Ltd.

[0111] (E-1) Pl...

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Abstract

An addition-curable conductive silicone composition includes the components as following: (A) denoted by an average composition formula (1), which is organopolysiloxane including at least two alkenyls connected with one silicon atom in one molecule, Ra R / bSiO(4-a-b) / 2 (1); (B), which is organic hydrogen polysiloxane including at least two hydrogen atoms connected with one silicon atom in one molecule; (C) silver powder or silver coated microsphere powder; (D) conductive microphere power (which does not include silver, copper or metal including silver or copper); and (E) an addition reaction catalyst; and (F) one or more than two selected from fatty acids, fatty acid derivatives and their metal salts. Cured material specially silicon rubber with high conductivity 1.0*10<-2> Omega*cm is formed from the conductive silicone composition, which can be used for coating, the shape maintenance is good, and the storage stability is good.

Description

technical field [0001] The present invention relates to a conductive silicone composition that can provide a conductive silicone cured product such as conductive silicone rubber, and particularly relates to a compound that is highly conductive, can be coated, and has excellent shape retention after coating (before curing). Curable conductive silicone composition and its preparation method. Background technique [0002] The conductive silicone rubber composition becomes a silicone rubber having excellent conductivity after being cured, and is particularly used in fields and the like that require heat resistance, which is characteristic of silicones. Conventionally known conductive silicone rubber compositions include an organopolysiloxane having at least two alkenyl groups in one molecule, an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to silicon atoms in one molecule , a platinum-based catalyst, and an addition-curable conductive silicone rubber com...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K13/02C08K13/06C08K3/08C08K9/10C08K3/04C08K5/09H01B1/24
CPCC08K3/04C08K3/08C08K5/09C08L83/04H01B1/12H01B1/24
Inventor 山川直树滨田吉隆
Owner SHIN ETSU CHEM IND CO LTD
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