It can be used to prepare high temperature and strong alkali resistant silicone defoamer. The defoamer also has the advantages of non-toxic and environmental protection. By adding high-viscosity hydroxy silicone oil and MQ silicone resin to synthesize a network polymer with a high degree of branching, thereby improving the high temperature resistance and strong alkali resistance of the defoamer. Using a silicone resin containing SiH group or aralkyl as a cross-linking agent, a phenyl silicone resin-containing packaging material was synthesized with a silicone resin containing vinyl and high phenyl under the action of a platinum catalyst. It has good transparency, high hardness, and high refractive index. It can be used for LED packaging and lens production. Using MQ hydrogen-containing silicone oil and silyl acrylate, under the catalytic action of Pt, a hydrosilylation reaction occurs to obtain MQ resin modified carboxy silicone oil. The combination with amino silicone oil emulsion can give the fabric better softness, smoothness and fullness.