Brominated epoxy resin is in the form of white powder. It is an epoxy resin that contains bromine (Br) in its molecular structure and has a self-extinguishing function. It is also called bromine-containing ring. Oxygen resin, brominated epoxy resin. Its important varieties include brominated bisphenol A type epoxy resin, brominated phenolic type, and dibromopentaglycol type epoxy resin. The common features of this type of epoxy resin are self-extinguishing and good heat resistance. It is understood that brominated epoxy resin is an additive flame retardant, mainly used in PBT and ABS/PC polymer alloys. It has good melt flow rate, high flame retardant efficiency, excellent thermal stability and light stability. properties, and can give the flame-retardant material good physical and mechanical properties, and it is not easy to bloom. Mainly used as flame-retardant composite materials, structural materials, adhesives, and coatings in the construction, aviation, shipbuilding, and electronic and electrical industries.
The classification and applicable product range of brominated epoxy resins are as follows:
Brominated epoxy resins can usually be divided into low, medium and high grades according to their molecular weight. kind. Low molecular weight is suitable for flame-retardant ABS and HIPS, while high molecular weight is suitable for ABS/PC polymers, PBT and nylon 6,66.
Brominated epoxy resin is also divided into EP type and EC type according to different end groups. Compared with EC type, EP type has better light resistance but slightly lower bromine content, while the latter’s flame-retardant ABS and HIPS have better impact strength.
The molecular weight range of brominated epoxy resin is 700-45000. Resins with different molecular weights affect the physical properties, heat resistance, impact resistance, etc. of flame-retardant plastics, so they can be selected according to different flame-retardant requirements. Choose the appropriate molecular weight:
1200-4000 EC type is suitable for ABS and PP resin.
Model 8000-25000EP is suitable for PBT and PET.
15000-50000EC type is suitable for nylon 6,66.
Brominated epoxy resin below 1400 is used in the copper clad laminate industry (not used as a flame retardant).
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