A kind of conductive silicone rubber plate and preparation method thereof

Abstract

The invention provides an electric-conduction silicone rubber plate, which comprises the following raw materials by weight: 100 parts of methyl vinyl silicone rubber, 60-80 parts of graphite, 25-40 parts of stainless steel fiber, 0.5-2 parts of a nanometer material, 0.5-2 parts of a vulcanizing agent, 5-10 parts of a carbon fiber cloth, and 35-45 parts of an aluminum silicate fiber cloth. The invention further provides a preparation method of the electric-conduction silicone rubber plate, wherein the preparation method comprises: adding silicone rubber, graphite, a nanometer material and a vulcanizing agent to an open mill, mixing to obtain a rubber compound, sequentially adding an aluminum silicate fiber cloth, the rubber compound, steel fiber, the rubber compound and a carbon fiber clothinto a mold, and carrying out high temperature and high pressure vulcanization for 4-7 min. According to the present invention, a variety of the materials are added to the silicone rubber, wherein the graphite and the stainless steel fiber can reduce the electrical resistivity of the silicone rubber, the nanometer material can effectively disperse the distribution of the graphite in the rubber, the carbon fiber cloth has good electrical conductivity and good tensile performance, and the aluminum silicate fiber cloth has good thermal insulation performance and good tensile strength, such thatthe obtained electric-conduction silicone rubber plate has good electrical conductivity and good mechanical property.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a conductive silicone rubber plate and a preparation method thereof. Background technique [0002] Conductive silicone rubber is a composite polymer material. Silicone rubber has excellent heat resistance, cold resistance, and dielectric properties. After mixing, it can not only maintain the properties of the matrix rubber, but also have electrical conductivity. [0003] At present, the existing research is to prepare conductive silicone rubber by adding carbon-based and metal-based particle materials to the silicone rubber matrix. The existing problems are mainly reflected in two aspects. On the one hand, there is the problem of material addition ratio: adding a high proportion of carbon-based and metal-based materials can improve the electrical conductivity of conductive silicone rubber, but it will cause its mechanical properties to deteriorate; in order to improve me...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the deficiencies of the above-mentioned technologies, provide a conductive silicone rubber sheet and its preparation method, which can solve the poor conductivity and instability of conductive silicone rubber in the prior art, and at the same time improve the mechanical properties of conductive silicone rubber. performance, expand the application range of conductive silicone rubber, so that the manufactured conductive silicone rubber can be used in road traffic, airport runway laying and bridge deck paving, etc.

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