真空度对PBAT聚酯性能的影响  

Effect of Vacuum Degree on Properties of PBAT

作　　者：徐文佳 宋晓玲 杨晓倩 XU Wenjia;SONG Xiaoling;YANG Xiaoqian(Xinjiang Tianye(Group)Co.,Ltd.,Shihezi,Xinjiang 832000,China)

机构地区：[1]新疆天业(集团)有限公司,新疆石河子832000

出　　处：《塑料》2024年第3期79-82,160,共5页Plastics

基　　金：2022年新疆生产建设兵团"揭榜挂帅"重大科技计划(2022AA002)。

摘　　要：以己二酸(AA)、对苯二甲酸(PTA)、1,4-丁二醇(BDO)为原料,在自制催化剂的催化作用下,合成聚己二酸对苯二甲酸丁二醇酯(PBAT)。在缩聚阶段,采用真空调节阀调节真空度,实现真空度梯度,并通过分析真空度分别为250、150、100、50、25 Pa下,PBAT产品的熔体流动速率、端羧基含量、拉伸性能及相对分子质量等性能的差异发现,当真空度分别为250、150 Pa时,无法生成高分子聚合物;当真空度为100、50、25 Pa时,真空度越高,产品溶体流动速率、端羧基、拉伸性能等综合性能越好。With adipic acid(AA),terephthalic acid(PTA),1,4-butanediol(BDO)as raw materials,under the catalysis of self-made catalyst,poly(butylene adipate)terephthalate(PBAT)was synthesized.In the condensation stage,vacuum degree was controlled and adjusted by controlling vacuum regulator valve,and vacuum degree gradient was realized.In addition,by investigating the differences of melt flow rate,terminal carboxyl content,tensile property and molecular weight of the final PBAT products at the vacuum degree of 250,150,100,50 and 25 Pa,it was concluded that polymer cannot be formed at the vacuum degree of 250 and 150 Pa,while the higher the vacuum degree was at the vacuum degree of 100,50 and 25 Pa,the higher the vacuum degree was.The product solution flow rate,terminal carboxyl group,tensile properties and other comprehensive properties were better.

关 键 词：PBAT 真空度 熔体流动速率 端羧基含量 缩聚 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]