The invention provides a room-temperature fast
vulcanization condensation type heat-conducting
flame-retardant pouring
sealant and a preparation method thereof. The pouring
sealant comprises the following raw materials: hydroxyl-terminated polysiloxane, SH-MQ
organosilicon resin, modified
fumed silica, an organic
guanidine flame retardant, a heat conduction agent, a cross-linking agent, an organicguanidine catalyst and a
diluent, wherein the organic
guanidine flame retardant is a compound of
guanidine sulfamate and polyguanidine
phosphate. The organic guanidine flame retardant is introduced into the raw materials, so that the deacetonized
organosilicon pouring
sealant has excellent flame retardancy; meanwhile, unexpected discovery shows that when the organic guanidine flame retardant is acompound of guanidine sulfamate and polyguanidine
phosphate, the flame retardant and the organic guanidine catalyst can cooperate with the catalyst to play a catalytic role, at the moment, the pouring sealant can be rapidly cured, and the deep curing thickness is large. The prepared pouring sealant has excellent mechanical properties, and is simple in preparation method, low in production cost, easy for
mass production, environment-friendly,
pollution-free and suitable for industrial large-scale production.