摘要
通过熔融缩聚的方法,以己二酸、二元醇、甘油作为第三单体合成了含有支化结构的聚酯增塑剂,探究了不同二元醇合成的支化聚酯,并按照一定配方将聚酯加入到聚氯乙烯(PVC)中制得PVC试片,利用傅里叶红外光谱分析、热重分析、高效凝胶色谱分析对支化聚酯进行了表征,对PVC试片进行拉伸性能、热稳定性能、耐抽出性能等性能测试。结果表明,二元醇为二缩三乙二醇时,产品相对分子质量为4871,分散系数为2.26,黏度为11.20Pa·s,支化聚酯增塑的PVC试片断裂伸长率高于400%,吸水量低,热稳定性高,耐抽出性能良好。
Polyesters with a branched structure were synthesized from adipic acid, a glycol and glycerin, and used in PVC as plasticizers. Using FTIR, TG, and GPC, the tensile properties, thermal stability, and extraction resistance, the PVC/polyester systems were studied. When triethylene glycol was used as the dibasic alcohol, the molecular weight, dispersion coefficient, and viscosity of the products were 4900 g/mol, 2. 26, and 11. 198 Pa ·s, respectively. The plasticized PVC samples showed low water absorbing capacity, high thermal stability, and good extraction re- sistance.
出处
《中国塑料》
CAS
CSCD
北大核心
2014年第1期79-83,共5页
China Plastics
基金
国家科技部十二.五科技支撑项目(2012BAD32B03)
江苏省高校科研成果产业化推进工程项目(JHl0-31)
关键词
聚氯乙烯
增塑剂
支化聚酯
甘油
制备
poly（vinyl chloride）
plasticizer
branched polyester
glycerin
preparation
