Preparation method of flame retardant type room-temperature curable foaming liquid silicone rubber

The invention belongs to the field of organosilicon polymer new materials and provides a preparation method of a flame retardant type room-temperature curable foaming liquid silicone rubber. The preparation method comprises the following steps: performing heat treatment on a vinyl silicone oil, a hydroxyl silicone oil, a reinforcing filler, a flame retardant filler and a structurized control agent, and cooling to a room temperature to obtain a base rubber; adding a viscosity adjusting agent and a catalyst to one part of the base rubber, and stirring to obtain rubber A; adding the viscosity adjusting agent, a crosslinking agent and an inhibitor to other part of the base rubber, and stirring to obtain rubber B; and mixing the rubber A and the rubber B in a mass ratio of 1:1, and then foaming and curing at a room temperature, thereby obtaining the flame retardant type room-temperature curable foaming liquid silicone rubber. The flame retardant type room-temperature curable foaming liquid silicone rubber obtained