Preparation method for heat-conducting silicone rubber
A heat-conducting silicone rubber and mixing silicone rubber technology, which is applied in the chemical industry, can solve the problems of poor processing performance, lack of contact with the powder, and insufficient tightness between the heat-conducting powder and the mixing rubber, etc., to achieve good thermal conductivity and processing performance. Effect
Inactive Publication Date: 2014-08-20
DONGGUAN TIANAN SILICONES TECH
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Problems solved by technology
[0002] The current heat-conducting silicone rubber has poor thermal conductivity and poor processing performance, mainly because the heat-conducting powder and the rubber compound are not closely matched during the kneading process, and the powders are not connected together, and gaps appear, which leads to the preparation. The performance of thermal conductive silicone rubber is not good
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Effect test
Embodiment Construction
[0008] The invention provides a preparation method of heat-conducting silicone rubber. The preparation method comprises the following steps: the first step, in parts by weight, adding 1000 parts of mixed silicone rubber with a hardness of 40 degrees and 5 parts of coupling In the second step, add 2000 parts of heat-conducting powder into the kneader, the heat-conducting powder is mixed in proportion by the first heat-conducting powder, the second heat-conducting powder, and the third heat-conducting powder, wherein the first heat-conducting powder, the second heat-conducting powder The materials of the second heat-conducting powder and the third heat-conducting powder are the same and both are spherical. The radius of the second heat-conducting powder is smaller than the radius of the first heat-conducting powder and greater than the radius of the third heat-conducting powder. The first heat-conducting powder, the second heat-conducting powder, the second heat-conducting powder ...
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The invention provides a preparation method for heat-conducting silicone rubber. The preparation method comprises the following steps: step 1, adding 1000 parts of mixed silicone rubber with hardness of 40 DEG and 5 parts of a coupling agent into a kneader; step 2, adding 2000 parts of heat-conducting powder into the kneader, wherein the heat-conducting powder is prepared through blending of first heat-conducting powder, second heat-conducting powder and third heat-conducting powder in proportion, the first heat-conducting powder, the second heat-conducting powder and the third heat-conducting powder are made of a same material and are spherical, the radius ratio and the weight ratio of the first heat-conducting powder to the second heat-conducting powder to the third heat-conducting powder are 30: 5: 1 and 1: 3: 1, respectively; step 3, fully kneading the above-mentioned mixtures by using the kneader; and step 4, carrying out material discharging. According to the invention, through addition of the heat-conducting powder prepared through blending of the first heat-conducting powder, the second heat-conducting powder and the third heat-conducting powder with different particle sizes, gaps among all the components are fully filled, and the prepared heat-conducting silicone rubber has good thermal conductivity and processing performance.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of heat-conducting silicone rubber. Background technique [0002] The current heat-conducting silicone rubber has poor thermal conductivity and poor processing performance, mainly because the heat-conducting powder and the rubber compound are not closely matched during the kneading process, and the powders are not connected together, and gaps appear, which leads to the preparation. The performance of thermal conductive silicone rubber is not good. Contents of the invention [0003] Based on this, the present invention provides a method for preparing heat-conducting silicone rubber with good thermal conductivity and processability. [0004] A method for preparing heat-conducting silicone rubber, the preparation method comprising the following steps: the first step, adding 1000 parts of mixed silicone rubber with a hardness of 40 degrees and 5 parts of coupl...
Claims
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IPC IPC(8): C08L83/04C09K5/14
Inventor 成家新成家添
Owner DONGGUAN TIANAN SILICONES TECH