季戊四醇磷酸酯/二乙基次磷酸锌协同阻燃聚酰胺6的制备及其性能  

Preparation and performance of pentaerythritol phosphate/zinc diethyl phosphate synergistic flame retardant polyamide 6

作　　者：刘婷 张安莹 王锐[1] 董振峰[1] 朱志国[1] 王照颖 LIU Ting;ZHANG Anying;WANG Rui;DONG Zhenfeng;ZHU Zhiguo;WANG Zhaoying(School of Materials Science&Engineering,Beijing Institute of Fashion Technology,Beijing 100029,China)

机构地区：[1]北京服装学院材料科学与工程学院,北京100029

出　　处：《纺织学报》2018年第9期8-14,共7页Journal of Textile Research

基　　金：国家重点研究计划项目(2017YFB0309002)

摘　　要：为提高聚酰胺6(PA6)纤维的阻燃性及可纺性,设计了季戊四醇磷酸酯(PEPA)/二乙基次磷酸锌(ZDP)协同阻燃体系,采用熔融挤出方法制备了PA6/PEPA/ZDP阻燃复合物,研究了不同质量分数的阻燃剂对PA6阻燃性的影响规律,以及最优阻燃配比时的纺丝工艺及纤维性能。结果表明:PEPA可降低PA6的热稳定性,但ZDP可提高复合物的热稳定性,二者同时使用可起到互补作用;当PEPA与ZDP的质量比为10∶5时,复合物的极限氧指数达到28%,垂直燃烧测试的有焰燃烧时间明显缩短,锥形量热残炭量增加了6.56%,总热释放量降低了34.5%,此配比下复合物具有优良可纺性;将初生丝经3倍牵伸热定型后,其断裂强度为1.34 c N/dtex,断裂伸长率为33.99%。In order to improve the flame retardance and spinnability of polyamide 6(PA6)fibers,a synergetic flame-retardant system of pentaerythritol phosphate(PEPA)/zinc diethyl phosphate(ZDP)was designed.Flame retardant polyamide 6(PA6)/PEPA/ZDP composites were prepared by a melt blending method in a twin-screw extruder.The influences of different flame retardant components on the flame retardancy and the spinning process and properties of the optimal flame retardant ratio were studied by scanning electron microscopy,differential scanning calorimetry,thermo gravimetry,cone calorimetry,limit oxygen index(LOI)and UL-94 rating.The results indicate that PEPA can decrease the thermal stability of PA6,but ZDP can improve the thermal stability of the composites,which can be complementary with each other.When the mass ratio of PEPA and ZDP is 10∶5 in PA6,the value of LOI reaches 28%,and the flame burning time of the UL-94 is reduced obviously.The residual carbon amount of cone calorimetry increases by 6.56%,and the value of total heat release decreases by 34.5%.It is found that the composites have excellent spinnability.The breaking strength is 1.34 cN/dtex and the as-spun fibers elongation at break is 33.99%after as-spun fibers are subjected to hot stretching by three times.

关 键 词：聚酰胺6 季戊四醇磷酸酯 二乙基次磷酸锌 可纺性能 阻燃性能 

分 类 号：TQ342.89[化学工程—化纤工业]