Ceramic flame-retardant and fire-resistantsilicone rubbercompositematerial and preparation method thereof

The invention relates to a ceramic flame-retardant and fire-resistantsilicone rubbercompositematerialand a preparation method thereof. The ceramic flame-retardant and fire-resistantsilicone rubbercomposite material comprises raw materials in parts by mass as follows: 40-80 parts of silicone rubber, 1-10 parts of ammonium polyphosphate, 1-10 parts of calcium carbonate, 10-30 parts of silicate filler, 6-25 parts of a fluxing agent and 0.3-1.5 parts of a vulcanizing agent. The preparation method comprises preparation steps as follows: the silicone rubber, ammonium polyphosphate, calcium carbonate, the silicate filler and the fluxing agent in the ratio are mixed uniformly in an open mill; the vulcanizing agent is added, the raw materials are continuously and uniformly mixed on the open mill to form pieces, the temperature is not higher than 30 DEG C, finally, the pieces are subjected to hot pressing for 4-20 min under a flat-plate vulcameter for forming, post vulcanization is performed in a drying oven for 2 h at