CAJ | 학술논문

以磷酸、季戊四醇、三聚氰胺为原料合成了膨胀型阻燃剂季戊四醇磷酸酯三聚氰胺盐(PPM).采用摆锤冲击试验机、微机控制万能试样机等研究了氧化铈(CeO2)协效阻燃 PPM/聚丙烯(PP)体系的力学性能,以极限氧指数(LOI)、热分析(TGA)和扫描电镜(SEM)考察了 CeO2对 PPM/PP 体系的阻燃协效作用,探讨了作用机理.结果表明:适量 CeO2的加入能够提高体系的 LOI,PPM 的质量分数为20%,CeO2的添加量为 PPM/PP 质量的1%时,LOI 可达到最大值为30%;TG 结果表明,CeO2的加入可以提高膨胀炭层在高温时的热稳定性,增加高温时残余物的量;膨胀炭层的 SEM 图表明,适量 CeO2能够改善膨胀炭层的形貌,提高炭层的隔热隔质性能;适量的 CeO2的加入可提高体系的缺口冲击强度,拉伸性能则略有下降.
이린산、계무사순、삼취청알위원료합성료팽창형조연제계무사순린산지삼취청알염(PPM).채용파추충격시험궤、미궤공제만능시양궤등연구료양화시(CeO2)협효조연 PPM/취병희(PP)체계적역학성능,이겁한양지수(LOI)、열분석(TGA)화소묘전경(SEM)고찰료 CeO2대 PPM/PP 체계적조연협효작용,탐토료작용궤리.결과표명:괄량 CeO2적가입능구제고체계적 LOI,PPM 적질량분수위20%,CeO2적첨가량위 PPM/PP 질량적1%시,LOI 가체도최대치위30%;TG 결과표명,CeO2적가입가이제고팽창탄층재고온시적열은정성,증가고온시잔여물적량;팽창탄층적 SEM 도표명,괄량 CeO2능구개선팽창탄층적형모,제고탄층적격열격질성능;괄량적 CeO2적가입가제고체계적결구충격강도,랍신성능칙략유하강.
Melamine salt of pentaerythritol phosphate(PPM)was synthesized with phosphoric acid,pentaerythritol and melamine. This flame retardant polypropylene containing cerium oxide(CeO2) can be used as a synergistic agent for the flame retardancy of intumescent flame retardant polypropylene system. The pendulum impact tester and universal material machine were used to evaluate the mechanical properties of intmescent flame retardant system;the limiting oxygen in-dex(LOI),thermogravimetric analysis(TGA),and scanning electron microscopy(SEM)were used to evaluate the synergis-tic effects of CeO2. The LOI value of the system increased when reasonable amount of CeO2 was added,and it reached maxi-mum(30%)when the mass fraction of PPM was 20% and CeO2 added was 1% of the PPM/PP system. The TGA data shows that CeO2 can enhance the thermal stability of the intumescent flame retardant polypropylene system at high temperature and effectively increase the char residue formation. The morphological structures observed with SEM demonstrate that reason-able amount of CeO2 can improve the morphologies of intumescent char layer and the properties of heat insulation and barrier material. The reasonable amount of CeO2 in the system can increase its impact strength and decrease its tensile properties.