氯化石蜡/DOTP复合增塑体系在PVC中的应用  

Application of Chlorparaffin/DOTP Compound Plastic System in PVC

作　　者：沈一蕊 张菁菁 陈宣恺 顾峻鸿 赵承仲 蒋平平 魏猛 刘德开 SHEN Yirui;ZHANG Jingjing;CHEN Xuankai;GU Junhong;ZHAO Chengzhong;JIANG Pingping;WEI Meng;LIU Dekai(College of Materials and Chemical Engineering,Ningbo University of Technology,Ningbo,Zhejiang 315211,China;School of Chemical and Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Product Technology Service Co.,Ltd.,Ningbo,Zhejiang 315192,China;College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China)

机构地区：[1]宁波工程学院,材料与化学工程学院,浙江宁波315211 [2]江南大学,化学与材料工程学院,江苏无锡214122 [3]宁波中普检测技术服务有限公司,浙江宁波315192 [4]南开大学,电子信息与光学工程学院,天津300350

出　　处：《塑料》2024年第2期45-51,共7页Plastics

摘　　要：为得到低成本的PVC增塑剂配方,对氯化石蜡(CP-52)和对苯二甲酸二辛酯(DOTP)在聚氯乙烯(PVC)中的协同增塑性能进行研究,对比氯化石蜡复配前后,PVC制片的性能变化,包括热稳定性能、耐热老化性能、力学性能和增塑剂的耐迁移性能。结果表明,由于氯化石蜡具有耐挥发和阻燃性较好的特点,CP-52/DOTP复合增塑体系增塑的PVC制片具有较好的热稳定性能,其耐热老化性能和耐挥发性能均提高。另外,复配氯化石蜡后,可以显著提高PVC制片的力学性能,当复配比例为40%时,断裂伸长率和拉伸强度提高最显著,分别为0-CP-52/DOTP试片的1.92倍和2.28倍。复配氯化石蜡后,对PVC制片的耐迁移性能也有提高,在无水乙醇和石油醚中,当复配比例为50%时,PVC制片的质量损失率分别降低了6.87%和17.16%(6 h)。在食品模拟液中的耐迁移性能也得到提升,在正己烷中,当复配比例为50%时,PVC制片的质量损失率降低了14.97%。最后,对CP-52/DOTP复合增塑体系提出对应的增塑机理。In order to find low-cost PVC plasticizer formulations,the synergistic plastic performance of chlorparaffin(CP-52)and dioctyl terephthalate(DOTP)in polyvinyl chloride(PVC)was studied.The properties of PVC production were compared before and after remixing chloroparaffin,including thermal stability,thermal aging properties,mechanical properties and migration resistance of plasticizers.The results showed that the PVC production plasticized by CP-52/DOTP combined plasticizer system had good thermal stability because of the volatile and flame retardant of chlorparaffin.Otherwise,the thermal aging resistance and volatility resistance were improved as well.Furthermore,the tensile strength and fracture elongation of PVC production were significantly increased after remixing chloroparaffin.When the remixing ratio was 40%,the fracture elongation and tensile strength increased the most,which were 1.92 times and 2.28 times that of the unremixed PVC film,respectively.The migration resistance was also improved after remixing chloroparaffin especially in anhydrous ethanol and petroleum ether.When the remixing ratio was 50%,the mass loss of PVC production decreased by 6.87%and 17.16%,respectively(6 h).The migration resistance in the food simulation solution was also improved,especially in n-hexane,when the optimal mixing ratio was 50%,the mass loss of PVC production was reduced by 14.97%.Finally,the plasticized mechanism was discussed.

关 键 词：增塑剂复配 氯化石蜡 对苯二甲酸二辛酯 聚氯乙烯 增塑性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]