Good fineness and dispersibility, good thixotropic performance, and good affinity with the medium. It plays the role of reinforcement, semi-reinforcement, dissolution, and increment in the system, making the surface of the rubber smooth, and Effectively improve the aging resistance and thixotropic properties of the system, enhance the stability of the system, and improve the tensile properties of the rubber strip. Products are widely used in silicone sealants, polyurethane sealants and polysulfide sealants.