ABS树脂熔融接枝马来酸酐的研究

研究了在双螺杆挤出机中使用自制的引发剂进行马来酸酐（MAH）熔融接枝（丙烯腈／丁二烯／苯乙烯）共聚物（ABS）的反应，对反应机理进行了讨论，红外光谱分析证明，MAH成功地被接枝到ABS的主链上，对ABS的组分分离证明接枝发生在ABS的丁二烯部分。研究了MAH用量，引发剂含量，反应温度和螺杆转速及溶剂对接枝反应的影响，发现接枝率随着MAH用量的增加，反应时间和螺杆转速的增加而增大；当增大引发剂含量时，接枝率呈现先增加后降低的趋势，自制引发剂比常用的过氧化二异丙苯（DCP）或过氧化苯甲酰（BPO）引发剂接枝效果要好得多，而且受加工条件的影响小。

STUDY ON THE GRAFTING OF MALEIC ANHYDRIDE ONTO MELT ABS RESIN

The graft copolymerization of maleic anhydride (MAH) onto aeryloniirile-butadiene-styrene terpolymer ( ABS) inmolten slate with twin screw extruder was studied. Infrared spectra confirmed that maleie anhydride was successfully grafted onto the ABS backbone. The separation results of grafted copolymers indicated that the grafting occurred ut the butadiene portion of ABS. The influences of the amount of MAH, initiator's concentration, reaction temperature and rotating speed of the screw on the grading reaction were studied.