Heat-conductive Elastomer Composition

Abstract

Provided is a heat-conductive elastomer composition that is useful for a heat-dissipating member of an electric or electronic part and the like. Elastomer heat conductivity is improved by mixing an elastomer composition, which is primarily a styrene elastomer, with a heat-conductive filler formed from an aluminum hydroxide, the surface of which is coated with an organic coupling agent, and / or a heat-conductive filler formed from a magnesium oxide obtained by coating the surface of deactivated magnesium oxide in the form of magnesia clinker with an inorganic substance and / or an organic substance.

Description

technical field [0001] The present invention mainly relates to a heat-conductive elastomer composition as a heat-dissipating member provided in electric appliances and electronic parts. Background technique [0002] For example, power transistors such as central processing units (CPUs) of computers, electrical appliances such as driver integrated circuits (ICs), and components for electronic equipment are heating elements. In recent years, the heat generation of these components has increased due to the high density of these components. Countermeasures for heat dissipation of the above-mentioned heating element. [0003] As a heat dissipation measure against the above-mentioned heating element, in order to improve the thermal conductivity from the above-mentioned heating element to the cooling member such as a heat-dissipating housing, a heat-dissipating member as a spacer is used between the above-mentioned heating element and the above-mentioned cooling member. . In orde...

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Problems solved by technology

There is a problem that metal fillers such as tungsten cannot be used as heat dissipation components installed in electrical appliances and electronic components because electrical insulation is required.

[0015] In the above-mentioned Patent Document 4, aluminum hydroxide, which is a metal hydroxide as a flame retardant, is used. However, in order to obtain high flame retardancy, a large amount of metal hydroxide must be added, so that the composition becomes hard and the formability deteriorates. The problem

[0016] In the above-mentioned Patent Document 5, aluminum hydroxide, which is a phosphorus-based flame retardant metal hydroxide, is used as a flame retardant. However, in order to obtain high flame retardancy, a large amount of metal hydroxide must be added, so the composition becomes hard. And the problem of poor formability

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