As an additive bromine flame retardant, 80 10 also needs to be used in combination with antimonide, and the ratio is the same as that of DBDPO/ antimonide; Compared with DBDPO, 80 10 is more suitable for engineering plastics with high temperature and viscosity.
The first company to industrialize 80 10 was American Yabao Company, and applied for a patent for production and use. At one time, domestic research and production units of flame retardants did not carry out this research. However, after inquiry, it is found that the patent scope of Yabao Company is outside China, so it can produce and use 80 10 in China, but it cannot export and apply for a patent. The prospect is bright, and domestic scientific research and production units have invested in research. At the end of 2002, it was successfully tested on an industrial scale. Brominated epoxy resin for flame retardant, also known as tetrabromobisphenol A epoxy resin oligomer, has a bromine content of 50% and a molecular weight of 1000~45000, which can be divided into EP type and EC type. Compared with EC type, EP type has better light resistance, but lower bromine content, while the latter flame-retardant ABS and HIPS have better impact strength. Commercial brominated epoxy resin is a mixture of opalescent translucent chips and white powder. Domestic brominated epoxy resin has a pungent smell, while Israeli Dead Sea bromine products have no smell. Brominated epoxy resin has satisfactory melt flow rate, high flame retardant efficiency, excellent thermal stability and light stability, and can give good mechanical properties to flame retardant substrate, and the product does not frost.
Low-phase molecular weight brominated epoxy resin is suitable for flame retardant ABS and HIPS, while high-phase molecular weight brominated epoxy resin is suitable for flame retardant ABS/PC alloy and engineering plastics such as PC, PET and PBT. When in use, it needs to be used with antimonide.
Israel Dead Sea Bromide Company is the most famous manufacturer of brominated epoxy resin flame retardant in the world, with perfect production technology and excellent product quality. It was once the only brand in the domestic brominated epoxy resin flame retardant market. Since 2002, Shandong Laiyu Chemical Co., Ltd. has commercialized brominated epoxy resin, but the product quality is not ideal. At present, the representative products in the domestic market are: Israeli Dead Sea Bromide Company F2 100F2400, Shandong Laiyu Chemical, Taiwan Province Changchun BEB series, etc. The development of brominated polystyrene is similar to that of brominated epoxy resin, and it is also a kind of flame retardant that has developed rapidly in recent years. Brominated polystyrene is white or yellowish powder or particles, and the bromine content is about 60%. The thermal decomposition temperature is higher than 3 10℃, which has the advantages of large molecular weight, good thermal stability, good dispersibility and miscibility in polymer, easy processing, no frosting and so on.
Brominated polystyrene is named brominated polystyrene and polybrominated styrene respectively according to its synthetic route. As can be seen from the naming, brominated polystyrene is completed by bromination of polystyrene. The synthesis of polybrominated styrene is to protect styrene with vinyl bond first, then bromize, then restore vinyl bond, and then polymerize. Whether solvents are used in the synthesis process can be divided into solvent method and non-solvent method. Because the solvent method consumes less bromine, people usually use the solvent method for synthesis.
Brominated polystyrene is mainly used in thermoplastic resins, such as PA, PBT and PET. , it needs to be used with antimonide. In the case of flame retardant polyester, the addition of 13% (reinforced) to17% (unreinforced) can give the material UL94V-O grade (0.8mm), and in the case of flame retardant polyamide, the addition of 2 1% can give the material UL94V-O grade (0.8mm).
Great Lakes Company and Yabao Company are famous producers of brominated polystyrene, and their products are far ahead in the domestic market. At present, some domestic flame retardant manufacturers have made their own products, such as Shouguang Ocean Chemical Co., Ltd. ..