Flame-retardant ABS composite material as well as preparation method and application thereof

The invention discloses a flame-retardant ABS (Acrylonitrile Butadiene Styrene) composite material which comprises the following components in parts by weight: 67-80 parts of ABS resin, 3-6 parts of low-molecular-weight SAN (Styrene Acrylonitrile Butadiene Styrene) resin, 13-16 parts of a brominated flame retardant, 3-5 parts of antimony trioxide, 1-2 parts of an ester aid and 1-2 parts of PLA (Polylactic Acid) resin. The ester auxiliaries are used for reducing friction among ABS molecules, improving the lubricity among the ABS molecules and improving the internal lubricity, under the synergistic combined action of the ester auxiliaries, the flame-retardant ABS weld mark tensile strength is improved, and meanwhile excellent mechanical toughness and comprehensive performance are kept. 本发明公开了一种阻燃ABS复合材料，按重量份数计，包括以下组分：ABS树脂67～80份，低分子量SAN树脂3～6份，溴系阻燃剂13～16份，三氧化二锑3～5份，酯类助剂1～2份，PLA树脂1～2份。本发明使用酯类助剂减小ABS分子间的摩擦，改善ABS分子间的润滑性，提高内润滑性，在三者协效共同作用下，从而提升阻燃ABS的熔接痕拉伸强度，同时保持了优异的力学韧性及综合性能。