摘要
以芥酸、双氧水、甲酸为原料,浓硫酸为催化剂,合成了环氧芥酸,经复分解反应制得环氧芥酸钙和环氧芥酸锌,将其作为稳定剂用于聚氯乙烯(PVC)制品中,通过刚果红法、电导率、热老化以及热失重研究测试其热稳定性能。结果表明,环氧芥酸钙/锌的配比为3:1(质量比,下同)时,长期热稳定性能较好,不易产生"锌烧"现象,热稳定时间达到118 min;分别与1,3-二甲基-6-氨基脲嘧啶(DMAU)、β-二酮、季戊四醇(PER)复配,初期着色得到很大改善,静态热稳定时间较纯PVC提高了31.1 min;复配体系协同效应为:DMAU>β-二酮>PER。
Erucic acid,hydrogen peroxide,and formic acid were used to synthesize epoxidized erucic acid,from which epoxidized calcium and zinc erucates were synthesized by double decomposition reaction.The two erucates were used as thermal stabilizers for PVC.Through the method of Congo red test,conductivity test,and thermogravimetry the stabiling effect was measured.It was found that the epoxy calcium/zinc erucates(mass ratio of 3:1) provided a thermal stable time(T_2) of 118 min and depressed zinc burn.When 1,3-dimethyl-6-amino uracil(DMAU),β-diketone,and pentaerythritol were compounded separately,initial-stage whiteness was highly improved.The statically thermally stable time was increased by 31.1 min based on neat PVC,the order in synergistic effect of compounding was DMAU>β-diketone> pentaerythritol.
出处
《中国塑料》
CAS
CSCD
北大核心
2015年第3期105-111,共7页
China Plastics
基金
国家科技部"十二.五"科技支撑项目(2012BAD32B03)
关键词
聚氯乙烯
热稳定剂
环氧芥酸锌
环氧芥酸钙
环氧化反应
poly(vinyl chloride)
thermal stabilizer
epoxidized calcium erucic
epoxidized zinc erucic
epoxidation reaction
