Flame-retardancy and anti-dripping effects of intumescent flame retardant polylactide
Polylactic acid (PLA) has serious melt dripping during burning test. While melt dripping not only increases the burning surface area which increases the intensity of the fire, but also leads to fast fire spread. To improve the fire retardancy and antidripping behavior of PLA, solid super acid (SSA) and aluminum hypophosphite (AHP) were introduced into conventional intumescent flame retardant (IFR)/polylactic acid (PLA) system. A synergistic effect was found between IFR, AHP and SSA in PLA composites. The IFR was a combination of ammonium polyphosphate (APP) and pentaerythritol (PER) with a weight ratio at 3:1. The flame retardancy of IFR/PLA composites were investigated by limiting oxygen index (LOI) and UL-94 vertical burning, The results show that the IFR/PLA composites containing 10 wt％ IFR can pass UL-94 V-0 rating, but melt dripping is heavy during flaming.
Solid super acid Aluminum hypophosphite Intumescent flame retardant Anti-dripping
Xuan Zhou Juan Li Liang Xu
Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo Key Laboratory of Polymer Materials, Ningbo 315201, PR China
国际会议
成都
英文
186-189
2012-09-17（万方平台首次上网日期，不代表论文的发表时间）