▎ 摘　　要

NOVELTY - Composite flame retardant comprises rubber, solid flame retardants and liquid flame retardants, and the composite flame retardant also contains a flame retardant modifier. The flame retardant modifier is a diene liquid rubber containing one or more functional groups of isocyanate group, epoxy group and trialkoxysilyl propyl group. The diene-based liquid rubber includes at least one of butadiene-based, chloroprene-based, isoprene-based, 1,3-pentadiene-based, and cyclopentadiene-based. USE - Composite flame retardant. ADVANTAGE - The composite flame retardant react with the flame retardant and the rubber to enhance the bonding force between the flame retardant and the rubber and improve the dispersion of the flame retardant in the rubber matrix, has a strong bond with rubber, fully realizes the flame retardant effect in rubber, and improves the mechanical properties, low temperature performance, heat generation performance and fatigue resistance of the flame retardant and vibration damping rubber compound. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing the composite flame retardant, which comprises adding solid flame retardant, the liquid flame retardant and the flame retardant modifier to the rubber, and mixing the rubber by a high-temperature mixing process, and the mixing temperature at 130-170 degrees C for 2-30 min; (2) a flame-retardant and vibration-damping rubber with excellent comprehensive performance, which comprises raw rubber, the composite flame retardant, a reinforcing filler, an active agent, an antioxidant, an accelerator, and a vulcanizing agent, the raw rubber includes natural rubber, styrene butadiene rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, neoprene rubber, nitrile rubber, butyl rubber, silicone rubber, fluoro rubber, polyurethane rubber, chloroether rubber, Polysulfide rubber, acrylate rubber, reclaimed rubber or their combined rubber in different proportions, and the reinforcing filler includes carbon black and/or silica; and (3) a method for preparing the flame-retardant and vibration-damping rubber, which comprises mixing the raw rubber and the composite flame retardant uniformly at one time, adding reinforcing fillers, active agents, and antioxidants to continue the second mixing, cooling, adding accelerator and vulcanizing agent for three mixing, and finally obtaining the flame-retardant and vibration-damping rubber.