废弃PET降解产物改性PC复合材料的制备及其性能

Preparation and properties of PC composites modified by waste PET degradation products

摘要:

为提高聚碳酸酯（PC）材料流动性，以乙二醇（EG）为溶剂降解废弃聚对苯二甲酸乙二醇酯（PET）得到的产物为改性剂，制备PET降解产物改性的PC复合材料，对测试结果进行分析讨论。结果表明，PET降解反应中产物主要BHET及其低聚物，降解产物的加入能够有效提高复合材料熔体质量流动速率，且熔体质量流动速率随着降解产物添加量的增加而增大．综合分析复合材料的力学性能及流动性，确定最佳实验用量为4%，降解体系为m(PET)∶m(EG)为1∶3．

Abstract:

In order to improve the fluidity of polycarbonate （PC） material， polyethylene glycol （EG） was used as solvent to degrade the waste polyethylene terephthalate （PET） product as modifier to prepare PC composite modified by PET degradation product， and the test results were analyzed and discussed. The results demonstrate that the products of PET degradation reaction are mainly BHET and its oligomers. The addition of degradation products can effectively improve the melt mass-flow rate of the composite materials， it increases with the addition of the degradation product. It is found that when the mass ratio of m（PET）∶m（EG） in the degradation system is 1∶3 and the mass fraction of degradation products added to PC is 4%， the composite has the better comprehensive properties.