摘要
采用芳纶浆粕(PPTA-pulp)对膨胀阻燃聚丙烯(PP)进行增强改性,通过一步共混法制备了PPTA-pulp-膨胀型阻燃剂(IFR)/PP阻燃复合材料,考察了PPTA-pulp用量对PPTA-pulp-IFR/PP复合材料的力学性能、阻燃性能及热稳定性能的影响。结果表明,当硅烷偶联剂KH-550处理的PPTA-pulp质量比为5%时,膨胀阻燃复合材料的力学性能达到最佳:拉伸强度40.0MPa,冲击强度56.9J·m-1,极限氧指数LOI 28%,垂直燃烧等级达到UL-94V-0级。复合材料的热稳定性能提高,炭残余量增加。SEM观察表明,PPTA-pulp经KH-550处理后,浆粕纤维与基体树脂的结合性较好。
Intumescent flame- retardant polypropylene （PP） was reinforced by Kevlar pulp （PPTA pulp）. The composites of PPTA-pulp- intumescent flame retardant（IFR）/PP were prepared by one step blending method. The effects of the PPTA-pulp contents on the mechanical properties, the flame retardant properties and the thermal stability of the composites were studied. The results indicate that the PPTA-pulp -IFR/PP composites show the highest values of mechanical properties, tensile strength 40.0 MPa, impact strength 56.9 J ~ m 1, limited oxygen index （LOI） 28% and the vertical firing ranks UL 94 V- 0, when the mass fraction of PPTA- pulp treated by silicon coupling agent KH-550 reaches 5 G. The thermal stability and the residue mass of the composite are improved respectively. The SEM results show good affinity between the PPTA-pulp treated by K H-550 and the PP matrix.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2013年第5期79-85,共7页
Acta Materiae Compositae Sinica
基金
江苏省产学研前瞻性联合研究项目(BY2010124)
关键词
聚丙烯
膨胀型阻燃剂
芳纶浆粕
力学性能
阻燃
polypropylene intumescent flame retardant
PPTA pulp mechanical properties
flame retardant
