摘要
以生物降解塑料聚对苯二甲酸己二酸丁二醇酯(PBAT)为基材,以50%表面改性的CaCO3为填充物制备出具有较好吹膜性能的可降解高填充复合材料。研究结果表明,随着CaCO3添加量的增加,CaCO3/PBAT复合材料的拉伸性能出现先提高后降低的趋势,而偶联剂KH560以及增溶剂ADR的使用则可以明显提高CaCO3/PBAT(50%)复合材料的拉伸性能,且在偶联剂使用量为2.0%,增容剂为1.0%时,复合材料的拉伸性能达到最佳,CaCO3/PBAT(50%)薄膜制品的横向拉伸强度可达20.10 MPa,纵向拉伸强度可达21.73 MPa,横向断裂伸长率为648%,纵向断裂伸长率为528%,熔融指数为1.58 g/10min。通过SEM对薄膜表面进行观察,发现CaCO3分布均匀,完全被PBAT浸润包覆。复合材料满足市场包装材料的力学性能要求,大幅度降低了PBAT的使用成本,具有良好的应用前景。
In this study, poly buteylene adipate-co-terephthalate(PBAT)resin as base material was loaded with 50% surface modified CaCO3to prepare high load biodegradable composites. The results show that with the increase of the amountof CaCO3in the composites, the tensile propertiesimprove fist and then decrease.While the application of coupling agent KH560 and compatibilizer ADR can significantly improve the tensile properties of CaCO3/PBAT(50%)composite. When the amount of KH560 and ADR is 2.0% and 1.0% respectively, the transverse tensile strength isup to 20.10 MPa, the longitudinal elongation isup to 21.73 MPa, the transverse elongation is 648%, the longitudinal elongation is 528%, and the melting index is only 1.58 g/10min, which can meet the mechanical requirements of the market packaging material and greatly reduce the utilization cost of PBAT.For the all above, these new kind biodegradable composites have good application potential on packaging in the future.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2014年第4期139-142,共4页
Polymer Materials Science & Engineering
