Silicone flame retardant

Silicone flame retardant

As a new type of non-halogenated flame retardant, silicone compounds have excellent flame retardant, processability and environmental friendliness. This paper mainly describes the silicone flame retardant.

The study of silicone compounds as flame retardants began in the early 1980s. In 1981, Kamber et al. published a study on polycarbonate (PC) and polydimethylsiloxane, which can improve PC flame retardation. As a rising star of flame retardant, silicone compounds have attracted attention and attention. Subsequently, the research and development of silicone flame retardants are increasingly active.

Though silicone flame retardants development time behind the phosphorus-containing flame retardants (1940 s) and phosphorus flame retardants (1960 s), however, silicone compounds as a kind of new type without halogenated flame retardants, with its excellent flame retardant (efficiency), molding processability, environmental friendliness and unique style, has a broad development prospects.

Organic silicone flame retardant has silicone oil, silicone, silicone rubber, polysiloxane with functional group, polycarbonate - siloxane copolymer, acrylate - siloxane composite and silicon gel.

"D1C1RM series" flame retardants, i.e., non-reactive (rm4-7105), epoxy (rm4-7501), methyl methacrylate (rm4-7081) and amine (rm1-9641) functional groups of silicone micropowder. Add 011% ~ 110% of the flame retardant to the applicable plastic to improve the processing. Add 1% ~ 8%, can get smoke quantity, put heat, CO produce quantity all low flame retardant material.

The new silicone flame retardant xc-99-b5654 is a special polysiloxane with an aromatic base and branched chain structure. New silicone flame retardants for granular products, softening point is 85 ~ 105 ℃.



Tris(2-chloroisopropyl)Phosphate(TCPP)

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The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.


"Xc-99-b5654" is characterized by the scientific design of its molecular structure (aryl content, molecular weight and functional end basis) to achieve optimal level. Compared with poly (methyl siloxane, it is in the resin (such as PC) is a very good dispersion, to PC, PC/ABS alloy not only has high efficient flame retardant, impact strength and flame retardant materials can be greatly improved, at the same time, the material of heat resistance, formability and recycle processability manner.

A new type of flame retardant PC is a successful example of the application of a new type of silicone flame retardant. The impact strength (gap) of its edzade is as high as 441J/m, which is about 3 times of the flame retardant PC of bromine, and the flame retardant reaches ul94v-o class, and the recycling property is also excellent.

Some literatures also include silica, glass fiber, microporous glass and low melting glass, etc., which are included in the flame retardant of silicone (inorganic).

In the case of silicone flame retardant polymer materials, the flame retardant of silicone is mostly transferred to the material surface to form the polymer gradient material with the surface of the silicon ketone enrichment layer. Once burned, will produce silicone peculiar, contain - Si - O - key and (or) - Si - C - key of inorganic oxygen insulation layer insulation, both to prevent burning decomposition product to escape, and suppress the thermal decomposition of high polymer material, to achieve high flame retardant, low smoke, low harmful purposes.

The new silicone flame retardant xc99-b5654 is used as an example, because it is in good solubility with the PC, so it can be distributed evenly in the matrix resin. Burns (800 ℃) is a molten, due to the viscosity is smaller than the PC flame retardant, phase separation, are produced by silicone to the appropriate migration and enrichment of resin surface, form a homogeneous flame retardant carbonized layer.

Given the silicone flame retardant effect related to its surface enrichment characteristics, therefore, silicone flame retardants and matrix resin melt degree, molecular structure and molecular weight of silicone decided by flame retardant materials to the size of the flame retardant performance.

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