摘要
以聚乳酸（PLA）为原料,乙酰柠檬酸三丁酯（ATBC）为增塑剂,利用竹纤维作为增强体,加入聚磷酸铵/淀粉/甲酰胺、双氰胺（APP/TS/FD）混合膨胀型阻燃剂,制备阻燃型竹纤维/PLA复合材料,通过分析土埋、热老化两种条件下,复合材料表面形貌、燃烧性能、热性能、吸水性能、力学性能的变化,研究竹纤维增强PLA复合材料的降解性能。研究表明,在热老化情况下,复合材料的力学性能变化更为明显,在80℃下热老化12天后复合材料的拉伸强度和弯曲强度分别降低了86.6%和77.1%,而土埋3个月后的拉伸强度和弯曲强度分别降低了71.9%和61.8%,处理前后复合材料的燃烧性能和热性能均无明显变化。
Taking polylactic acid（PLA） as raw material and acetyl tributyl citrate（ATBC） as plasticizer, using bamboo fiber as reinforcement and adding ammonium polyphosphate, starch/formamide and dicyandiamide（APP/TS/FD） as mixed intumescent flame retardant, the flame retardant bamboo fiber/PLA composites were prepared. The degradation characteristics of bamboo fiber reinforced PLA composites were studied by analyzing the changes of surface morphology, combustion performance, thermal properties, water absorption and mechanical properties of composites under two conditions of soil burial and thermal aging. The results show that the mechanical properties change more apparently by thermal aging, the tensile strength and bending strength of the composites reduce by 86.6% and 77.1% after thermal aging at 80℃ for 12 days, while the tensile strength and bending strength of the composites reduce by 71.9% and 61.8% after soil buried for 3 months. There is no obvious change in the combustion and thermal properties of the composites before and after treatment.
出处
《塑料科技》
CAS
北大核心
2018年第3期85-90,共6页
Plastics Science and Technology
基金
南宁市科学研究与技术开发计划项目(20151264)
南宁学院科研项目(2017XJ26)
广西师范学院2017年化学博士点建设开放课题(2017YB04)
南宁学院科研项目(2016XJ38)
关键词
竹纤维
聚乳酸
复合材料
降解性能
Bamboo fiber
Polylactic acid
Composites
Degradation performance
