采用苯并。恶嗪（BOZ）与微胶囊化红磷（MRP）复配制备了无卤阻燃丙烯腈-丁二烯-苯乙烯共聚物（ABS）。研究了BOZ／MRP质量比和用量对阻燃ABS性能的影响。然后固定BOZ和MRP的用、量，考察丁腈橡胶（NBR）的添加量对BOZ／MRP／ABS阻燃体系阻燃性能和力学性能的影响。结果表明。BOZ／MRP质量比为3：2，总量为20％（质量分数）时，可制得氧指数（LOI）达24．4％，垂直燃烧达UL-94V—0级的无卤阻燃ABS；BOZ受热产生的酚羟基与红磷燃烧产生的氯化磷等发生酯化反应减缓了ABS的分解；NBR添加量为8％时，阻燃体系垂直燃烧达V．0级，拉伸强度为30．0MPa．缺口冲击强度达11．4kJ／m2。
Non-halogen flame retardant ABS was prepared by using benzoxazine (BOZ) and microencapsulated red phosphorus (MRP). The effects of components ratios and contents of BOZ/MRP on properties of flame retardant ABS were studied, the effects of nitrile butadiene rubber (NBR) on flame retardant properties and mechanical properties of BOZ/MRP/ABS were investigated. When BOZ /MRP mass ratio is 3:2 and the total content is 20 %, limited oxygen index (LOI) of non-halogen flame retardant ABS is 24.4 % , and the vertical burning reaches UL-94 V-0 level. FT-IR shows that - OH from heated BOZ reacted with phosphorus oxide etc generated from burning red phosphorus, which increases the char residues of the flame retardant ABS. When the content of NBR is 8 %, a flame retardant ABS of UL-94 reaches V-0 level, with tensile strength of 30.8 MPa, notched impact strength of 11.4 kJ/m2.
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