摘要
采用刚果红法和红外光谱分析研究了姜黄素对聚氯乙烯(PVC)的热稳定作用,并与常用的热稳定助剂进行复配。以市售铅盐和钙/锌复合稳定剂为对比组,利用转矩流变仪、电子万能试验机等研究了复合体系的流变性能和力学性能。结果表明,3份姜黄素添加到100份PVC的静态热稳定时间为14 min;姜黄素可缓解PVC的氧化降解;姜黄素与月桂酸镧、硬脂酸钙存在明显的协同效应,复配比例约为1:0.8:0.5时静态及动态热稳定时间为50、47 min;其流变性能和力学性能与添加铅盐(添加量均为3份)基本一致,优于钙/锌复合稳定剂,其中动态热稳定时间远高于两者。
The thermal stabilizing effect of curcumin on PVC was studied by Congo red testing and FTIR and compared with commercial lead salt and Ca/Zn compound stabilizers.Rheological performance and mechanical property of PVC constaining these stabilizers were studied.It was found that the static thermal stability was 14 min when 3 part curcumin was used.FTIR indicated that curcumin could reduce the oxidatized degradation of PVC.Curcumin had obvious synergistic effect with lanthanum lauric a,d calcium stearate.Static and dynamic thermal stable time could reach 50 min and 47 min with ratios of curcumin-.lanthanum lauric:calcium stearate eqoal 1:0.8:0.5.Rheological and mechanical properties were similar to those of lead salt,better than those of Ca/Zn compound stabilizer.Dynamic thermal stability time was significantly longer than that of the lead and Ca/Zn containing systems.
出处
《中国塑料》
CSCD
北大核心
2015年第3期100-104,共5页
China Plastics
基金
唐山市应用基础研究项目(14130242B)
河北省高等学校科学研究计划资助项目(Z2014066)
关键词
聚氯乙烯
姜黄素
热稳定剂
稀土
硬脂酸钙
poly(vinyl chloride)
curcumin
thermal stabilizer
rare earth
calcium stearate
