1,2-环己烷二甲酸醇醚酯结构与增塑PVC性能的关系  

Relationship between structure of 1,2-cyclohexane diformate alcohol ether esters and PVC plasticizing performance

作　　者：赵文豪 徐仁奎 余小龙 谈继淮 李梦雅 朱新宝[1] ZHAO Wenhao;XU Renkui;YU Xiaolong;TAN Jihuai;LI Mengya;ZHU Xinbao(Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Hebei Guangrun Chemical Co.,Ltd.,Xingtai 055550,Hebei,China)

机构地区：[1]南京林业大学化学工程学院江苏省林业资源高效加工利用协同创新中心,江苏南京210037 [2]河北广润化工有限公司,河北邢台055550

出　　处：《精细化工》2024年第8期1840-1847,共8页Fine Chemicals

基　　金：国家重点研发计划项目(2022YFD2200802)。

摘　　要：以1,2-环己烷二甲酸酐(HHPA)、乙二醇醚(乙二醇甲醚系列、乙二醇丁醚系列)为原料,通过直接酯化法合成了1,2-环己烷二甲酸二(乙二醇醚)酯(简称醇醚酯,下同)。利用FTIR和^(1)HNMR对产物进行了表征,并对醇醚酯增塑后的聚氯乙烯(PVC)制品的力学性能、微观形貌、热稳定性、耐迁移性、耐挥发性和耐候性进行了测试。结果表明,当醇醚酯的单侧乙氧基数目≤3时,其增塑效果与乙氧基数目呈正相关;与邻苯二甲酸二辛酯(DOP)增塑后的PVC制品(DOP/PVC)相比,1,2-环己烷二甲酸二(三乙二醇甲醚)酯(HHPTEM)增塑后PVC制品(HHPTEM/PVC)的断裂伸长率提升88.0%,5%热失重温度提高了20.2℃,在正己烷和甲苯中的质量损失率分别下降7.6%和4.9%,70℃下挥发性测试中,质量损失率下降1.9%,10 d紫外老化后断裂伸长率保持率提升8.6%。1,2-Cyclohexanediodicarboxylate(glycol ether)esters(alcohol ether ester,the same below)were synthesized by direct esterification between 1,2-cyclohexanedioic anhydride(HHPA)and glycol ether(ethylene glycol methyl ether series,ethylene glycol butyl ether series),and characterized by FTIR and ^(1)HNMR.Polyvinyl chloride(PVC)products with alcohol ether esters plasticization were then analyzed for their mechanical properties,micro-morphology,thermal stability,migration resistance,volatility resistance and weather resistance.The results showed that the plasticizing effect of alcohol ether esters was positively correlated with the ethoxylase when the number of unilateral ethoxylase groups was less than 3.Compared with the PVC product(DOP/PVC)plasticized by dioctyl phthalate(DOP),PVC product(HHPTEM/PVC)plasticized by 1,2-cyclohexane dicarboxylate(triethylene glycol methyl ether)ester(HHPTEM)exhibited an elongation at break improved by 88.0%,and the temperature of 5%mass loss increased by 20.2℃,while the mass loss rate in n-hexane and toluene decreased by 7.6%and 4.9%,respectively.In the volatilization test conducted at 70℃,the mass loss rate decreased by 1.9%,and the elongation retention rate at break increased by 8.6%after 10 d of ultraviolet aging.

关 键 词：1 2-环己烷二甲酸酐 乙二醇醚 耐候性 环保增塑剂 1 2-环己烷二甲酸乙二醇醚酯 聚氯乙烯 橡塑助剂 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ225.24TQ414