Decryption of ceramic silicone rubber


As we all know, silicone rubber is an organic polymer material, which is widely used in buildings, electric power, vehicles, aircraft, ships and other places in daily life. In case of a fire, ordinary rubber is easy to be completely burned in the fire, and the protection of personal and property safety in the fire is the top priority of everyone's concern. In order to make rubber have the effect of flame retardant, the previous technology is to add halogen-containing cosolvent. Although it has a good effect of flame retardant, a large number of toxic and harmful gases are emitted during combustion, accompanied by a large amount of The amount of smoke also directly blocks the people who want to escape in the fire, so the technology has been banned by the domestic and foreign environmental protection laws and regulations.


The ceramic products we can see in our daily life are all kinds of products made of natural clay and various natural minerals through grinding, mixing, shaping and calcining. They are basically inorganic products without organic matters. With the development of modern science and technology, people have been committed to the discovery and improvement of the relationship between organic and inorganic, which gave birth to the ceramic silicone rubber used in the field of flame retardant materials today.


When the rubber material containing inorganic filler is exposed to the flame, the rubber will degrade or burn, and the inorganic residue or ash with lower strength will be left after the degradation or combustion products volatilize. These residues are usually not agglomerated or self-supporting, or even broken into particles or powder, so there is no fire protection effect.


At present, the new type of ceramic silicone rubber can form a self-supporting ceramic body in the flame, which has certain strength, good thermal shock resistance and electrical performance. It can keep the integrity of the structure in the flame of 650-1000 ℃ for a certain period of time (0.5-2h), can play the role of "passive fire protection" well, and win precious time for fire safety. And it has the characteristics of halogen-free, low smoke, low toxicity, self extinguishing, environmental protection, easy processing, etc.