氧化淀粉/聚磷酸铵协同增强聚丙烯的阻燃性能

Flame Retardancy of the Oxystarch/Ammonium Polyphosphate Synergetic System on Polypropylene

使用氧化淀粉(OS)作为碳化剂,并将其引入聚磷酸铵(APP)阻燃体系以提升聚丙烯(PP)的防火安全性能。锥形量热测试表明OS的引入可以有效增强APP阻燃体系的阻燃效率,有效抑制了PP复合材料燃烧过程中的热量、烟雾和有害气体的释放。对阻燃机理进行探究表明OS的引入有效提高了残炭量的生成,并随着OS添加量的增加可以生成更高质量的炭层,高质量的炭层有效隔绝了可燃气体和氧气的传递,以达到保护内部基质的作用。

Oxystarch(OS)was used as a carbonizing agent and introduced into the ammonium polyphosphate(APP)flame retardant system to enhance the fire safety performance of polypropylene(PP).Cone calorimetry tests show that the introduction of OS can effectively enhance the flame retardant efficiency of the APP flame retardant system and inhibit the release of heat,smoke and harmful gases during the combustion process of PP composites.The investigation of the flame retardant mechanism indicates that the introduction of OS effectively improves the generation of char residues and the formation of a higher quality char layer with the increase of OS addition.The high quality char layer effectively isolates the transmission of combustible gases and oxygen to protect the internal matrix.