硅橡胶涂覆玻璃布导热绝缘垫片的研制

Preparation of Silicone Rubber Coated Glass Fabric Gasket with Heat Conduction and Electrical Insulation

研究导热填料的种类、用量、涂胶工艺以及硫化工艺对硅橡胶涂覆玻璃布导热绝缘垫片综合性能的影响。结果表明,硅橡胶导热系数随导热填料种类的不同而不同;导热系数随填料用量的增加而增加;混合填料比单一填料的导热系数高;不同种类的金属氧化物导热填料对硅橡胶的绝缘性能影响不大。采用30%的胶浆浓度及鼓硫硫化的方式是提高硅橡胶布产品外观的重要方法。

The effect of the type and amount of filler, as well as coating and sulfuration process on the overall properties of silicone rubber coated glass fabric gasket with heat conduction and electrical insulation are researched. The results show that, the coefficient of heat conductivity of silicone rubber compounds varies with different types of filler and increases with the addition of filler and mixed filler has higher coefficient of heat conductivity than that of single filler. The heat conduction filler of different types of metal oxide has no substantial influence on the insulation of silicone rubber compound. The appearance of the rubber coated fabric can be improved by using 30% latex and drum sulfuration .