含取代基的焦磷酸哌嗪调控聚乳酸阻燃和力学性能  

Regulation Effect of Piperazine Pyrophosphate Containing Substituent Group on Flame Retardancy and Mechanical Properties of Polylactic Acid

作　　者：王琢 戴彩云 李娟 ZhuoWang;Caiyun Dai;Juan Li(School of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Institute of Fire Safety Materials,NingboTech University,Ningbo 315100,China;Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]沈阳化工大学材料科学与工程学院,辽宁沈阳110142 [2]浙大宁波理工学院火安全材料研究所,浙江宁波315100 [3]中国科学院宁波材料技术与工程研究所,浙江宁波315201

出　　处：《高分子材料科学与工程》2025年第2期63-69,共7页Polymer Materials Science & Engineering

基　　金：浙江省自然科学基金资助项目(LZ23E030001)。

摘　　要：焦磷酸哌嗪(PAPP)是一种环保型阻燃剂,但是其在聚乳酸(PLA)中的阻燃效率较低,通常需要25%左右才能达到UL-94 V0等级。文中采用含取代基的焦磷酸哌嗪(H-PAPP)改善PLA的阻燃性能,引入异氰尿酸三缩水甘油酯(TGIC)调控其力学性能。结果发现,H-PAPP的质量分数为3%即可使PLA获得UL-94 V0等级。在氮气氛围中,H-PAPP使PLA的5%降解温度(T_(5%))略有降低,在空气中反而使PLA的T_(5%)提高,但是PLA的炭残留提高不明显。锥形量热分析表明,H-PAPP虽然降低了总热释放量(THR),但是峰值热释放量(PHRR)和烟释放(TSR)增加。此外,H-PAPP使拉伸和冲击强度略有降低,TGIC通过扩链反应提高了PLA的力学性能。Piperazine pyrophosphate(PAPP)is an environmentally friendly flame retardant,but its flame retardant efficiency in polylactic acid(PLA)is relatively low.Usually,25%PAPP is required to reach the UL-94 V0 rating.In this paper,a piperazine pyrophosphate containing substituent group(H-PAPP)was used to improve the flame retardancy of PLA,and glycidyl isocyanurate(TGIC)was used to regulate its mechanical properties.The results show that PLA containing 3%H-PAPP achieves UL-94 V0 rating.In nitrogen atmosphere,H-PAPP reduces the 5%degradation temperature(T_(5%))of PLA,while in air,it increases T_(5%)of PLA.However,the increase in the char residue of PLA is not significant.The cone calorimetry test results show that although H-PAPP reduces the total heat release,the peak heat release and smoke release are increased.In addition,H-PAPP reduces the tensile and impact strength,while TGIC improves the mechanical properties of PLA by chain extension reaction.

关 键 词：聚乳酸 阻燃 偶联 焦磷酸哌嗪 力学性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]