Phosphorus-containing flame retardant ramie fiber reinforced poly(lactic acid)(PLA) composites
Biocomposites have received a lot of research attentions because of their many advantages,such as biodegradability and renewable sources.However,the flammability of the biocomposites limited their application.In present work,flame retardant ramie reinforced poly(lactic acid) (PLA)composites were prepared loaded with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and ammonium polyphosphate (APP) by twin-screw extruder.APP and DOPO in the composites are proved to be very effective to improve flame retardancy according UL94 test and limit oxygen index (LOI) measurement.Thermogravimetric analysis (TGA) shows that the improved flame retardancy was due to increasing char residue at high temperature.The effect of APP and DOPO on the mechanical properties was also studied.The loading of APP disturbs the compatibility between PLA and fibers,which can be directly observed by using scanning electron microscopy (SEM).
Ramie PLA ammonium polyphosphate DOPO flame retardant
Yu Tao Li Yan
School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road,Shanghai, 200092, China
国际会议
上海
英文
110-110
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）