Thermal materials common in environmentally friendly flame retardants

Environmentally friendly brominated flame retardants decabromodiphenylethane 8,018,010 does not belong to PBDEs, absolutely impossible to produce in the combustion PBDD or PBDF; relative molecular weight of 8010 to 971; bromine content of 82%, and containing bromine DBDPO a considerable amount (83%), so basically the same flame retardant Melting point 345 ℃, thermal stability compared DBDPO (305 ℃) high; its light resistance as well as easy to dialysis characteristics are superior to DBDPO, the most valuable is the flame retardant The plastic can be recycled, which is a lot of brominated flame retardants do not have the characteristics. 8010 industrial average particle size 3μm, free-flowing, fine particles of white crystalline powder, readily dispersible in plastics modification, plastic color free. And industrialization costs and DBDPO fairly, is DBDPO ideal substitute. As additive brominated flame retardants, in the course of 8010 also required and antimony compounds used in conjunction with the same proportions and DBDPO / antimony compounds proportion; heat shrink tubing and DBDPO compared to 8010 is more suitable for high-temperature viscosity characteristics of the project plastic. Brominated epoxy flame retardant brominated epoxy resin, also known as tetrabromobisphenol A epoxy oligomer, a bromine content of up to 50%, molecular weight between 1,000 to 45,000, divided EP and EC type type; EP and EC type-type, the former light resistance is good, but lower bromine content, which flame-retardant ABS and HIPS has good impact strength. Commercial product is a mixture of brominated epoxy resin semipermeable name cream wafers and white powder, made of brominated epoxy resin with a pungent odor, and Israel Dead Sea Bromine products are odorless. Brominated epoxy resin having a melt flow rate and a satisfactory high flame retardant efficiency, good stability and light stability, and can impart good mechanical properties flame-retardant base, product blooming. Low relative molecular weight brominated epoxy resins are used in flame retardant ABS and HIPS, Gao molecular weight are suitable for flame-retardant ABS / PC alloy and PC, PET, PBT and other engineering plastics. It is in the course of the needs and antimony compounds used in conjunction. Brominated polystyrene, brominated epoxy resin and brominated polystyrene development is similar, but also in recent years, rapid development of a flame retardant species. Brominated polystyrene is white or light yellow powder or granule, bromine content of about 60%. The thermal decomposition temperature greater than 310 ℃, has a molecular weight, good thermal stability, the polymer dispersion and miscibility good, easy processing, can not afford to frost and other advantages. Brominated polystyrene in accordance with its synthetic pathway named brominated polystyrene and poly-brominated styrene, can be seen from the naming brominated polystyrene by bromination of polystyrene to complete; polybrominated styrene is carried out by the styrene first ethylenically protection, heat shrink tubing and then brominated, then ene key recovery, synthetic brominated styrene polymerization completed again. From the synthesis process is the use of solvents, can be divided into solvent and non-solvent. Because less solvent consumption of bromine, so people usually synthesized using solvent. Phosphorus-based flame retardant red phosphorus masterbatch in a non-halogen flame retardants, red phosphorus is a better flame retardant, has added less, widely used and so on. Ordinary red phosphorus hygroscopic, poor compatibility with the polymer material, particularly prone to spontaneous combustion, not actual use. Microencapsulation red phosphorus flame retardant, red phosphorus reduced activity to solve the compatibility, red phosphorus content of about 85%, but spontaneous combustion problem has not been effectively addressed, dust pollution. Red phosphorus Masterbatch red phosphorus and aluminum hydroxide, expandable graphite and other inorganic flame retardant compound used in the matrix resin as the carrier of a dark red particles, security issues have been resolved. It is low-smoke, flame-retardant efficiency; no dust pollution, excellent processing performance; good low density, thermal stability, product performance and less physical decline; blooming process, do not migrate, non-corrosive mold. In particular products have a high resistance to signs of leakage index (CTI), the electrical and electronic applications have obvious advantages. Tel: 0512-66032048 0512-65631124 0512-65688619 http://www.szhprs.com