改性滑石粉和柠檬酸三丁酯对聚乳酸性能的影响研究

Effect of Modified Talcum Powder and Tributyl Citrate on the Properties of Polylactic Acid

为了提高聚乳酸的性能,滑石粉、改性滑石粉和柠檬酸三丁酯被用来提高聚乳酸的流动性和力学性能。当聚乳酸中添加3%改性滑石粉和2%柠檬酸三丁酯时,聚乳酸的熔融指数达到最高值19. 17g/10min,聚乳酸的流动性最好,这是因为改性滑石粉的耦合作用可以改善滑石粉在聚乳酸中的分散性和流动性;当聚乳酸中添加1%改性滑石粉和2%柠檬酸三丁酯后,聚乳酸的冲击强度最高,较纯聚乳酸的冲击强度提高了38. 7%,这是因为改性滑石粉和柠檬酸三丁酯在聚乳酸材料中的协同效应,加强了聚乳酸分子链间的作用力,改善了聚乳酸的力学性能。

In order to improve the performance of polylactic acid,talcum powder,modified talcum powder and three butyl citrate are used to improve the fluidity and mechanical properties of polylactic acid. When adding 3%modified talcum powder and 2% citric acid three butyl,the melting index of polylactic acid reaches the highest value 19. 17 g/10 min,and the mobility of polylactic acid is the best,which is due to the modification. The coupling effect of talcum powder can improve the dispersity and fluidity of talc powder in polylactic acid. When 1% modified talcum powder and 2% citrate three butyl ester is added to polylactic acid,the impact strength of polylactic acid is the highest and the impact strength of pure polylactic acid is increased by 38. 7%. This is because of the modified talcum powder and three butyl citrate in the polylactic acid material. The synergistic effect strengthens the molecular chain interaction force of polylactic acid and improves the mechanical properties of polylactic acid.