两种新型辅助热稳定剂的研究  

Study on Two New Types of Auxiliary Stabilizers

作　　者：武润[1] 李阳[1] 姚有为[1] 

机构地区：[1]清华大学深圳研究生院新材料研究所,广东深圳518055

出　　处：《塑料科技》2011年第6期80-83,共4页Plastics Science and Technology

摘　　要：采用静态热老化、脱氯化氢实验研究了自制的TS-5、TS-7辅助稳定剂在高锌钙比（质量比为1.25/0.25）的热稳定体系中的作用。结果表明：在180℃条件下,以TS-7作为辅助稳定剂制备的PVC试片具有良好的初期白度和较长的锌烧时间;TS-5和TS-7分别与季戊四（醇PER）复配能够综合改善所制PVC试片的热稳定性能,获得了良好的初期和中期（热老化20-30 min）白度和较长的锌烧时间（90 min）。改善了以PER辅助热稳定剂制备的PVC试片锌烧时间短（40 min）,以D-山梨醇辅助热稳定剂制备的PVC试片白度不理想的缺点。Discoloration test and the dehydrochlorination test were employed to study the thermal stability of TS-5 and TS-7 auxiliary stabilizers in the Ca-Zn system of high mass ratio of ZnSt2 to CaSt2 equaling 1.25/0.25.The results show that： the PVC films containing TS-7 exhibites ideal initial color and comparatively long time of zinc burn in 180℃;the synergistic effect of TS-5 and pentaerythritol（PER）,TS-7 and PER are observed respectively,which can obtain better whiteness of PVC films during initial and medium-term heating（20 to 30 min）,and relatively long time of zinc burn（90 min）.Thus,short time of zinc burn（about 40 min） and initial whiteness caused by using PER and D-sorbierite as auxiliary stabilizer respectively have been ameliorated.

关 键 词：聚氯乙烯 辅助稳定剂 季戊四醇 D-山梨醇 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]