Phase change temperature control type silicone rubber composition and preparation method thereof

Abstract

The invention relates to a phase change temperature control type silicone rubber composition and a preparation method thereof. The silicone rubber composition is prepared by the following method: step1, preparing materials in proportion; step 2, preparing a base material: adding vinyl silicone oil into a kneading machine, adding a flame-retardant phase change material while stirring, conducting vacuumizing for 1-3 hours at normal temperature after uniform mixing, taking out the base material, and conducting sealing for later use; and step 3, preparing a rubber material: taking the base material, adding vinyl silicone oil and hydrogen-containing silicone oil into the base material, conducting uniform dispersing, adding a catalyst and a tackifier, and conducting uniform mixing, defoaming, and packaging to obtain the phase change temperature control type silicone rubber. The phase-change temperature-control type silicone rubber prepared by the invention has a relatively high latent heatvalue, can well control the temperature within the range of 35-40 DEG C, has good human body hand feeling experience, and particularly has good temperature control performance within the range of 35-40 DEG C. Other physical and chemical properties are good, and the method is suitable for the packaging process of electronic equipment.

Description

technical field [0001] The invention belongs to the field of silicone rubber, and in particular relates to a phase-change temperature-controlling silicone rubber composition and a preparation method thereof. Background technique [0002] In the electronics industry, in order to improve the stability and reliability of components and complete machines, it is often necessary to potting electronic components or assembly parts. Except for lead wires or connectors, the entire part is wrapped and sealed by potting glue, which is in contact with the outside world. The atmosphere is isolated to ensure that the whole machine can still work normally in environments such as vibration, high humidity, drastic temperature changes, and air pollution. Silicone rubber materials are widely used in the field of potting and sealing of electronic components due to their excellent high temperature resistance, low temperature resistance, weather resistance, electrical insulation and non-corrosiven...

AI Technical Summary

Problems solved by technology

However, limited by the space size of electronic components and the thermal conductivity of potting materials, it still cannot meet the heat dissipation requirements of existing, integrated, and high-power electronic components, which leads to an increase in the surface temperature of electronic products and seriously affects the operation of electronic products. reliability, number of uses

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