摘要
以对苯二甲酸和2-丙基庚醇为原料,在钛酸异丙酯为催化剂的条件下制备对苯二甲酸二(2-丙基庚)酯(DPHTP),并将DPHTP作为增塑剂用于制备聚氯乙烯(PVC)柔性薄膜,与市售DOP和DOTP进行应用性能的比较。通过傅里叶变换红外光谱和核磁共振氢谱对产物进行结构分析;通过热失重分析、拉伸测试、耐迁移测试和耐挥发性测试等比较DPHTP、DOP以及DOTP增塑的PVC薄膜在力学性能等方面的差异。结果表明,相比DOP和DOTP,DPHTP具有更低的挥发性,其增塑的薄膜有着更优异的热稳定性以及更高的体积电阻率;其中,DPHTP的加热减量为0.03190%,DPHTP增塑的薄膜的热失重5%的温度为272℃,体积电阻率为6.5×10^(9)Ω·m;DPHTP具有更低的挥发性且可以赋予PVC材料优异的电绝缘性能,在包装材料和电线电缆行业具有广阔的开发前景。
Using terephthalic acid and 2-propylheptanol as raw materials,isopropyl titanate as a catalyst,bis(2-propylheptyl)terephthalate(DPHTP)were obtained by esterification.And using DPHTP as a plasticizer to prepare polyvinyl chloride(PVC)flexible film,and compare the application performance with the common DOP and DOTP on the market.The molecular structure of plasticizer was verified by FTIR and1 H-NMR.The differences in mechanical properties of DPHTP,DOP and DOTP plasticized PVC films are compared by TGA,tensile test,migration resistance test and volatility resistance test.The results show that,compared with DOP and DOTP,DPHTP plasticized film has better thermal stability and higher volume resistivity.Respectively,the volume resistivity of DPHTP plasticized film is 6.5×10^(9),the 5%thermal weight loss temperature is 272℃,the heating loss of DPHTP is 0.03190%.The conclusion shows that DPHTP has lower volatility and can endow PVC materials with excellent electrical insulation properties,and it was predicted to have broad development prospects in packaging materials and wire and cable industries.
作者
冯珊
蒋平平
张萍波
张哲铭
张凯
顾倩
FENG Shan;JIANG Pingping;ZHANG Pingbo;ZHANG Zheming;ZHANG Kai;GU Qian(School of Chemistry and Materials Engineering,Jiangnan University,Wuxi 214122,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2022年第1期135-141,共7页
China Plastics
基金
国际交流合作项目(BX 2019018)。
关键词
对苯二甲酸二(2-丙基庚)酯
聚氯乙烯
环保增塑剂
塑料助剂
di(2-propylheptyl)terephthalate
polyvinyl chloride
environmentally friendly plasticizer
plastic additives
作者简介
通信作者:蒋平平(1957-),男,教授,从事增塑剂以及热稳定剂研究,ppjiang@jiangnan.edu.cn;通信作者:张萍波(1981-),女,副教授,从事精细化学品绿色合成与催化,pingbozhang@126.com。
