CAJ | 학술논문

以聚乳酸(PLA)为基材,Joncryl ADR 4370S为扩链剂,采用熔融共混工艺制备了改性PLA,并通过熔融挤出制得用于3D打印的PLA丝材.研究了ADR扩链剂对PLA热性能、熔体强度、力学性能的影响.结果表明,ADR扩链剂提高了PLA的耐热性和熔体强度;相比纯PLA,改性PLA的力学性能有所提高,当ADR用量为0.4%时,改性PLA的力学性能最佳.采用熔融沉积成型桌面3D打印机测试了PLA丝材的打印效果,结果表明,ADR用量为0.4%时,改性PLA丝材的综合打印性能最好.
이취유산(PLA)위기재,Joncryl ADR 4370S위확련제,채용용융공혼공예제비료개성PLA,병통과용융제출제득용우3D타인적PLA사재.연구료ADR확련제대PLA열성능、용체강도、역학성능적영향.결과표명,ADR확련제제고료PLA적내열성화용체강도;상비순PLA,개성PLA적역학성능유소제고,당ADR용량위0.4%시,개성PLA적역학성능최가.채용용융침적성형탁면3D타인궤측시료PLA사재적타인효과,결과표명,ADR용량위0.4%시,개성PLA사재적종합타인성능최호.
Modified polylactic acid(PLA) which used PLA as resin matrix and Joncryl ADR 4370S as chain extender was prepared by melt blending,and after melt extrusion,PLA filament which used for 3D printing was prepared.The effects of ADR chain extender on thermal properties,melt strength and mechanical properties of PLA were studied.The results show that ADR chain extender improves the heat resistance and melt strength of PLA.The mechanical properties of modified PLA are somewhat increased compared with pure PLA,when the ratio of ADR achieves 0.4%,mechanical properties of modified PLA were the best.Printing results of PLA filament tested by FDM desktop-level 3D printer shows that when the ratio of ADR is 0.4%,the comprehensive printing performance of modified PLA filament is the best.