Technical Standards and Specifications for Flame Retardant ABS Plastics

ABS is a flammable material and is classified as HB according to UL94. ABS burns quickly when it catches fire and emits a lot of toxic gas and black smoke, which is not conducive to practical applications. With the progress of science and technology and the improvement of quality of life, people have become more and more safety conscious, and strict fire-retardant requirements have been put forward for plastic materials used in automobiles, buildings, household appliances, office supplies, etc. at home and abroad, and corresponding technical standards and specifications have been formulated. Flame retardants are added to ABS by common methods, including inorganic flame retardants and organic flame retardants (e.g., halogen compounds, phosphorus-based flame retardants). Flame-retardant types have efficient flame retardancy but may have other properties that are not good (e.g., aging, high cost). Chemically modified ABS requires a specific production process and a more complex process. Currently, flame retardant modification of ABS materials is based on the addition of highly efficient halogen-containing flame retardants. Heat-resistant ABS resins generally have a heat deflection temperature of 90 to 105°C and have good heat resistance, toughness, and fluidity. ABS heat resistance can be improved by reducing rubber content and increasing SAN molecular […]