钛系PET膜用聚酯回用性能研究
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摘要
通过熔融挤出试验,系统研究了钛系PET膜用聚酯的回收性能,分别添加30%和100%回料聚酯,对钛系聚酯和锑系聚酯进行了反复挤出试验,结果表明,经多次挤出后,两种聚酯的性能如降解性能、结晶性能、端羧基及DEG含量的变化基本相当,钛系聚酯能够满足BOPET薄膜行业对聚酯原料回用的要求。
The recycling properties of film grade PET, which prepared with titanium catalyst, was systematically researched through the melt extrusion test. The repeated extrusion tests of titanium polyester and antimony polyester were completed by adding 30% and 100% recycled polyester, respectively. The result showed that, after several extrusions, the properties of the two polyesters were basically the same, such as degradation and crystallization properties, changes of carboxyl end group and DEG content. Therefore, titanium polyester met the requirements of BOPET film industry for the recycling of polyester raw materials.
The recycling properties of film grade PET, which prepared with titanium catalyst, was systematically researched through the melt extrusion test. The repeated extrusion tests of titanium polyester and antimony polyester were completed by adding 30% and 100% recycled polyester, respectively. The result showed that, after several extrusions, the properties of the two polyesters were basically the same, such as degradation and crystallization properties, changes of carboxyl end group and DEG content. Therefore, titanium polyester met the requirements of BOPET film industry for the recycling of polyester raw materials.
引文
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[4] 戴钧明,王玉合,张忠安,等.Sb/Ti复配催化半光聚酯热降解动力学研究[J].合成技术及应用,2016,31(1):1-6.
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[6] 臧国强.无重金属膜级聚酯的合成及性能研究[J].合成纤维工业,2014,37(1):21-24.
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