非APP膨胀型阻燃剂在TPV中的阻燃性能研究  

Study on Flame Retardance of TPV Containing an APP-free Intumescent Flame Retardant

作　　者：胡志 HU Zhi(Chongqing Research Institute Co.,Ltd.of China Coal Technology&Engineering Group Corporation,Chongqing 400037,China;Chongqing Copolyforce New Materials Co.,Ltd.,Chongqing 401332,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400037 [2]重庆科聚孚新材料有限责任公司,重庆401332

出　　处：《塑料工业》2021年第8期119-122,共4页China Plastics Industry

摘　　要：以热塑性动态硫化橡胶(TPV)为基体材料,加入非聚磷酸铵(APP)膨胀型阻燃剂FR-1420制备得到了阻燃TPV材料,考察了阻燃剂用量对材料阻燃性能的影响,通过热重分析(TG)和锥形量热分析分别研究了材料的热分解行为和燃烧行为。结果表明,FR-1420能显著提高TPV材料的垂直燃烧等级,当FR-1420用量为22份时,3.2 mm样条达到UL94 V-0级,FR-1420用量增加至35份,0.8 mm样条达到UL94 V-0级;TG分析显示,加入FR-1420后,TPV材料初始分解温度提前,残炭增加,有利于前期保护性炭层的形成;锥形量热分析显示,加入35份FR-1420后,TPV材料热释放速率峰值(PHRR)由534 kW/m^(2)降至124 kW/m^(2),TPV材料的火灾安全性能得到显著提升。The flame retardant thermoplastic vulcanizate(TPV)was prepared by adding an ammonium poly phosphate(APP)-free intumescent flame retardant(FR-1420).The effect of flame retardant dosage on flame retardance in TPV was studied.The thermal and combustion behaviors were evaluated by thermogravimetry analysis(TG)and cone calorimeter tests,respectively.The results show that the FR-1420 could improve the vertical burning test level of TPV composites.When the content of FR-1420 is 22 phr,the UL94 of 3.2 mm sample could achieve V-0.When the content of FR-1420 increases to 35 phr,the UL94 of 0.8 mm sample could achieve V-0.The thermogravimetry(TG)analysis proves that the addition of FR-1420 increases the initial decomposition temperature and char residue,which are beneficial to the formation of protective char layer.The cone calorimeter tests show that the PHRR decreases from 534 kW/m^(2) to 124 kW/m^(2) when 35 phr FR-1420 is added.It is indicated that the fire safely performance of TPV has improved.

关 键 词：热塑性弹性体 膨胀型阻燃剂 非聚磷酸铵型 热重分析 锥形量热 

分 类 号：TQ322.2[化学工程—合成树脂塑料工业]