摘要
采用刚果红试验、TG分析、烘箱热老化试验、转矩流变测试、耐候性能测试,对稀土复合热稳定剂(BRE-X)和钙锌热稳定剂进行了比较。结果表明,BRE-X具有更加优异的热稳定性能、加工性能和耐候性能,刚果红热稳定时间达32 min,PVC热降解温度提高11.1℃,QUV人工加速老化实验168 hΔE(色差)仅为0.4,6000 h老化试验ΔE和Δb(从黄到蓝变色范围)分别为2.74和1.77,不含铅等有毒重金属,无毒、环保。因此,BRE-X完全可以替代钙锌热稳定剂应用在PVC型材中。
The Gongo test, thennogravimetric analysis （TG）, oven aging test, torque rheological property test and weather resistance test were employed to compare rare earth co - heat stabilizers （ BRE - X） with Ca/Zn heat stabilizers. The results show that rare earth co - heat stabilizers （ BRE - X） exhibit a better performance of heat stability, rheological property and weather resistance. Time of Gongo test is 32min. Thermal degradation temperature of PVC is increased by 11.1℃. AE is 0. 4 after 168 hours by QUV artificial accelerated aging test. △E and △b are 2.74 and 1.77 respectively by 6000 hours aging test. BRE - X has no lead and other toxic heavy metals. So the non - toxic environment - friendly rare earth co - heat stabilizers （BRE -X） can substitute Ca/Zn heat stabilizers to apply in PVC profile.
出处
《稀土》
EI
CAS
CSCD
北大核心
2016年第6期46-51,共6页
Chinese Rare Earths
基金
工业和信息化部稀土共性关键技术研发项目(2014A1853)
包头市重大项目(2014C1857)
内蒙古自治区自然科学基金资助项目(2016MS0214)
关键词
稀土
聚氯乙烯
型材
热老化
稳定剂
rare earth
polyvinyl chloride
profile
heat aging
stabilizer
