Preparation method of ceramizing fire-resistant silicon rubber

Abstract

The invention relates to a preparation method of ceramizing fire-resistant silicon rubber. The rubber comprises the following components in parts by weight: 100 parts of methyl vinyl silicon rubber, 20-50 parts of white carbon black, 2-10 parts of hydroxyl silicone oil, 1-5 parts of a coupling agent, 25-100 parts of ceramizing powder, 2-5 parts of a heat stabilizer, 10-40 parts of a fire retardant, and 1-2 parts of a vulcanizer. The preparation method includes the following steps: adding the methyl vinyl silicon rubber in a kneading machine; then adding the white carbon black and the hydroxyl silicone oil; mixing for 30 minutes at the temperature of 80 DEG C; then adding the coupling agent, the ceramizing powder, the heat stabilizer and the fire retardant; mixing for 1-1.5 hours; raising the temperature to be 100 DEG C and keeping high vacuum for 30 minutes; and after cooling to room temperature, adding the vulcanizer on an open mixing machine for mixing to obtain the ceramizing fire-resistant silicon rubber. The rubber has good mechanical property and electrical property at normal temperature, does not contain halogen, is smokeless and non-toxic during combustion, can be extinguished quickly and forms a ceramizing shell to guarantee integrity of the inside.

Description

technical field

[0001] The invention relates to a novel polymer refractory material, in particular ceramicized refractory silicone rubber and a preparation method thereof. Background technique

[0002] The flame retardancy and fire resistance of polymers play a vital role in many fields of national production and life. With the rapid growth of urban population, high-rise buildings, hotels, large supermarkets, hospitals, stations, and airports continue to increase. Subway, With the construction of tunnel traffic, as well as the increase of large-scale public entertainment venues and public transportation facilities, the importance of fire safety is highlighted. In the case of a fire, how to ensure the smooth flow of power and communication within a certain period of time, to maximize the precious time, to reduce casualties and loss of life and property, this is a subject that people have been constantly exploring.

[0003] At present, most of the fire-resistant wires and cab...

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