钙皂及其复合热稳定剂对PVDC降解时释放氯化氢的影响  

Effect of calcium soap and its composite thermal stabilizers on dehydrochlorination of pvdc

作　　者：马群锋[1] 郭彬[1] 杨月琴[1] 

机构地区：[1]南通职业大学化学工程系,江苏南通226007

出　　处：《塑料制造》2010年第11期61-63,共3页Plastics Manufacture

摘　　要：用刚果红法测定了硬脂酸钙、硬脂酸钙/环氧大豆油和硬脂酸钙/甲基锡热稳定剂对PVDC降解时脱氯化氢的影响。结果表明:三种热稳定剂对PVDC降解时释放氯化氢的抑制能力为硬脂酸钙<硬脂酸钙/环氧大豆油<硬脂酸钙/甲基锡,PVDC的刚果红试纸变色时间分别达到24min、28min和30min。硬脂酸钙/环氧大豆油、硬脂酸钙/甲基锡复合热稳定剂的组成分别为2:1和3:1时,具有最佳的协同效应。Congo red method was used to measure the effects of thermal stabilizers of calcium stearate,calcium stearate with epoxidized soybean oil and calcium stearate with methyltin on the dehydrochlorination when PVDC degraded.The results showed the inhibitory capacity of calcium stearate was the weakest,followed by epoxidized soybean oil,and calcium stearate with methyltin was the strongest.The times of color change of Congo red test strips were respectively 24min,28min and 30min.When the mass ratio of calcium stearate to epoxidized soybean oil was 2：1,and calcium stearate to methyltin was 3：1, the best synergistic effects could be gained respectively.

关 键 词：聚偏二氯乙烯 钙皂 复合热稳定剂 刚果红法 

分 类 号：TQ325.304[化学工程—合成树脂塑料工业]