基于生物材料阻燃PLA研究进展

Research Progress in Bio-Based Flame Retardant Polylactic Acid

聚乳酸(PLA)容易燃烧,研发兼具阻燃性和可降解性的生物基材料成为研究热点。综述各类生物基阻燃剂用于PLA的研究现状,介绍生物基原料、改性生物基原料和生物基中间体等阻燃剂对PLA性能的影响,探讨各类生物基材料作用下PLA复合材料的阻燃机理。研究表明:单独添加生物基原料,对PLA的阻燃效果有限。生物基原料与传统阻燃剂复配,复合阻燃剂与PLA基体的相容性有待提高。生物中间体改性PLA的阻燃效果较好。指出未来生物基阻燃剂的研究可向多功能化、高性能化、低成本化方向发展。

Polylactic acid(PLA) is easy to burn, and the development of bio-based materials with both flame retardancy and biodegradability has become a research hotspot. The research status of various bio-based flame retardants for PLA is reviewed. The effects of bio-based raw materials, modified bio-based raw materials and bio-based intermediates on the properties of PLA are introduced. The flame retardant mechanism of PLA composites under the action of various bio-based materials is discussed. The results show that the flame retardant effect of PLA is limited by adding bio-based materials alone. Bio-based raw materials are compounded with traditional flame retardants, and the compatibility between composite flame retardants and PLA matrix need to be improved. The flame retardant effect of PLA modified by biological intermediate is better. It is pointed out that the future research on bio-based flame retardants can be developed in the direction of multifunction, high performance and low cost.