环保型钙锌复合热稳定剂与增塑剂在PVC中的协效作用研究  

Synergistic Effect of Environmental Ca-Zn Composite Thermal Stabilizer and Plasticizer on Poly(vinyl chloride)

作　　者：李梅[1,2,3,4,5] 丁呈祥 陈洁[2,3,4,5] 诸进华[6] 汪梅[2,3,4,5] 夏建陵[1,2,3,4,5] 

机构地区：[1]中国林业科学研究院林业新技术研究所,北京100091 [2]中国林业科学研究院林产化学工业研究所 [3]生物质化学利用国家工程实验室 [4]国家林业局林产化学工程重点开放性实验室 [5]江苏省生物质能源与材料重点实验室,江苏南京210042 [6]中国林业科学研究院林产化工研究所南京科技开发总公司,江苏南京210042

出　　处：《生物质化学工程》2017年第2期1-7,共7页Biomass Chemical Engineering

基　　金：中国林科院林业新技术所基本科研业务费专项资金(CAFINT2015C04)

摘　　要：将生物基增塑剂橡胶籽油基环氧脂肪酸甲酯(ERSO)与热稳定剂油脂源多聚脂肪酸基钙锌(OMFCTS)复配,以β-二酮作辅助热稳定剂,改性聚氯乙烯(PVC),通过热老化烘箱法、刚果红法、热重分析(TGA)、热重红外联用(TGAFTIR)分析、热重质谱联用(TGA-MS)分析、力学性能测试及动态力学性能分析(DMA)考察了改性PVC的热稳定性及力学性能,并对8个配方改性后PVC的性能进行了对比。结果表明:与DOP/CaSt_2/ZnSt_2、DOP/OMFCTS和ERSO/CaSt_2/ZnSt_2体系相比,ERSO/OMFCTS体系的热稳定性最优,力学性能较好,改性PVC的玻璃化转变温度(38.2℃)最低,拉伸断裂伸长率达265.6%;静态热稳定时间(200℃)最长(46’21")。ERSO和OMFCTS具有良好的协同作用,二者可有效替代传统增塑剂邻苯二甲酸二辛酯(DOP)及热稳定剂硬脂酸钙锌(CaSt_2/ZnSt_2)。The self-made rubber seed oil-based epoxy fatty acid methyl ester（ERSO） w-as used as plasticizer and the oil-based polyacid calcium-zinc composite（OMFCTS） was used as thermal stabilizer. Then the combination of ERSO and OMFCTS w-as used in PVC modification with jS-diketone as co-stabilizer. The thermal and mechanical properties of eight modified poly（vinyl chloride） （PVC） blends wee determined by means of the heat aging test methods, Congo-red test, TGA, TGA-FTIR, TGA-MS, tensile test and DMA. The results show-ed that the PVC blends with ERSO/OMFCTS had the optimal ther^nal stability,good mechanical properties, and low-er glass transition temperature（ Ty, 3 8 . 2 ^ ） than that of the PVC blends with DOP/CaSt2/ZnSt2, ERSO/CaSty/ZnSt2 or DOP/OMFCTS. And its static thermal stability time at 200丈 ＂was 4 6 ’21’’ and the tensile elongation at break was 265.6%. It could be concluded that there was an obvious synergistic effect betw-een ERSO and OMFCTS,and the ERSO/OMFCTS could replace the tradational plasticizer dioctyl phthalate and calcium/zinc stability of stearic acid（CaSt2/ZnSt2 ） effectively.

关 键 词：聚氯乙烯 橡胶籽油基环氧脂肪酸甲酯 增塑功能 热稳定性 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ314.24