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采用差示扫描量热法(DSC)分别测定了抗冲改性剂MBA、ACR对CPVC凝胶化性能的影响,综合力学性能、耐热性能时CPVC/MBA和CPVC/ACR共混物进行了系统研究。结果表明:MBA、ACR的加入均能极大地提高CPVC的凝胶化度,相同的改性剂含量下,共混物的凝胶化度差别不大;MBS、ACR均能大幅提高共混物的冲击强度,MBS用量3～6份、ACR 6～9份对CPVC的增韧效果较好,MBS为3～6份时共混物的性能更优,成本更低,但ACR的耐候性制品优于MBS的。
The effects of impact modifiers MBA and ACR on the gelation properties of CPVC were measured by differential scanning calorimetry (DSC). The mechanical properties and heat resistance of CPVC / MBA and CPVC / ACR blends were evaluated system Research. The results show that both the addition of MBA and ACR can greatly increase the degree of gelation of CPVC, the same modifier content, the degree of gelation of the blend is not significant; MBS, ACR can significantly improve the blend The impact strength of MBS is 3 to 6 parts, the toughening effect of ACR 6 ~ 9 on CPVC is better, the performance of the blend is better and the cost is lower when MBS is 3 ~ 6 parts, but ACR weathering products Better than MBS.