UV stable, impact resistant, flame retarded ABS compositions are obtained by compounding ABS with nitrile rubber, surfactant, Diels-Alder adduct of 2 moles of chlorocyclopentadiene and 1 mole of cyclooctadiene (commonly known as Dech Plus) and antimony oxide. Such compositions consist essentially by weight of from about 1% to about 9% nitrile rubber, from about 0.3% to about 5% surfactant, from about 14% to about 30% Dech Plus, from about 4% to about 20% antimony oxide and from about 50% to about 80.9% ABS. The ABS constituent has an Izod Impact Strength of at least 1.5 foot-pounds per inch. The nitril rubber is preferably acrylonitrile-butadiene copolymer containing by weight from about 15 to about 50% acrylonitrile component, and the surfactant is preferably siloxane-oxyalkylene copolymer. The compositions have Izod Impact Strengths ranging from 2.0 to 4 foot-pounds per inch and in most cases a V-0 (UL94) flammability classification.
通过将
ABS 与
丁腈橡胶、
表面活性剂、2 摩尔
氯环戊二烯和 1 摩尔
环辛二烯的 Diels-Alder 加合物(通常称为 Dech Plus)以及
氧化
锑混合,可获得紫外线稳定、抗冲击、阻燃的
ABS 复合物。按重量计,此类组合物主要由 1%至 9%的
丁腈橡胶、0.3%至 5%的
表面活性剂、14%至 30%的 Dech Plus、4%至 20%的
氧化
锑和 50%至 80.9%的
ABS 组成。
ABS 成分的伊佐德冲击强度至少为每英寸 1.5 英尺磅。硝基橡胶最好是
丙烯腈-
丁二烯共聚物,按重量计,
丙烯腈成分占 15%至 50%,
表面活性剂最好是
硅氧烷-
氧亚烷基共聚物。组合物的伊佐德冲击强度为每英寸 2.0 至 4 英尺磅,在大多数情况下可燃性等级为 V-0(UL94)。