1results about How to "Increase flame retardancy" patented technology

This invention discloses a nanoparticle-filled silicone rubber and its preparation method, relating to the field of polymer materials technology. The preparation method of the nanoparticle-filled silicone rubber of this invention includes the following steps: (1) adding 80-100 parts of raw silicone rubber, 10-25 parts of reinforcing filler, 1-3 parts of dimethyl hydroxy silicone oil, 3-10 parts of modified nano flame retardant, 0.05-2 parts of antioxidant, and 0.05-5 parts of lubricant to a mixing mill. Under nitrogen protection, the mixing temperature is 40-60℃, the rotation speed is 20-100 rpm, and the duration is 5-30 min to obtain a mixed mixture; (2) transferring the mixed mixture to an open mill, adding 2-5 parts of vulcanizing agent, mixing evenly, and then extruding and vulcanizing to obtain the product. The product prepared by this invention not only has good flame retardant properties but also excellent strength and toughness. The nanoparticle-filled silicone rubber of this invention can be widely used in high-grade wires and cables, aviation, aerospace, energy systems, electronics, automobiles, and other fields.