阻燃剑麻纤维增强聚乳酸复合材料的自然降解性能研究  

Natural Degradation Properties of Flame Retardant Sisal Fibers Reinforced Polylactic Acid Composites

作　　者：庞锦英[1] 刘钰馨[1] 李建鸣[1] 莫羡忠[1] 

机构地区：[1]广西师范学院化学与材料科学学院,广西南宁530001

出　　处：《广西师范学院学报（自然科学版）》2017年第2期77-81,96,共6页Journal of Guangxi Teachers Education University(Natural Science Edition)

基　　金：广西高校科学技术研究项目(KY2015LX197);广西科学研究与技术开发计划项目(桂科能14123006-27)

摘　　要：采用对剑麻纤维进行预处理,添加膨胀型阻燃剂与聚乳酸(PLA)制备成阻燃可降解环保型复合材料,对复合材料进行土埋处理,用万能试验机、氧指数测定仪和垂直燃烧测定仪、SEM、DSC、TGA等分析复合材料土埋前后力学性能、燃烧性能、表面形貌、热性能的变化来研究复合材料的降解性能。结果表明,随着土埋时间的增加,剑麻增强聚乳酸复合材料的表面形貌发生了明显变化,力学性能也随之下降,复合材料的氧指数从未处理的31.8%上升到33.7%,垂直燃烧达到了FV-0级(UL-94),剑麻对聚乳酸的降解具有促进作用。The environmental and degradable composites were prepared by preprocessing sisal fiber, and adding the expansion type of flame retardant and polylactic acid （PLA）. Analysis was made of mechanical properties, flame retardant performance, surface morphology, thermal properties of composites by Universal Testing Machine, Limit Oxygen Index and Vertical Burning Test, SEM, DSC, TGA before and after soil burial, to study the degradation behavior of composites. The results show that, with the increase of the time of soil burial, surface topography of sisal fibers reinforced polylactic acid composites certainly changed, the mechanical properties decreased; the oxygen index of the composites increased from 31.8%（Untreated） to 33.7% and the vertical combustion experiment achieved the FV-0 level （UL-94）;sisal fibers played a role in helping the degradation of PLA.

关 键 词：剑麻纤维 聚乳酸 复合材料 可降解 

分 类 号：TB332[一般工业技术—材料科学与工程]