无卤阻燃玻纤增强尼龙6复合材料的制备及性能

发布时间：2018-04-27 01:18

  本文选题：尼龙6 + 玻纤增强复合材料　； 参考：《湖南工业大学》2017年硕士论文

【摘要】：在不同的聚合温度下制备了三聚氰胺聚磷酸盐(MPP),用FTIR、SEM、XRD、TG对所制备的MPP进行了表征。另外,在MPP的制备过程中加入正硅酸乙酯对其进行改性,制备了Si O2改性MPP阻燃剂(m MPP),用FTIR、SEM、XRD和TG对m MPP进行了表征。将m MPP、二乙基次磷酸铝(ADP)、玻纤(GF)和尼龙6(PA6)熔融共混制得阻燃玻纤增强PA6复合材料(GFRPA6)。用万能拉伸试验机、氧指数仪和垂直燃烧仪分别对GFRPA6的力学和阻燃性能进行了表征。结果表明:MPP最佳的聚合温度为310℃,m MPP粒子比MPP粒子小,呈斜方晶型结构;Si O2对MPP实现了较好的复合;随着Si O2含量的增加,m MPP的热稳定性先增加后降低;GFRPA6复合材料的拉伸强度和弯曲强度呈现出先增加后降低的趋势,当Si O2为MPP的6 wt%时,GFRPA6的拉伸强度最大,较MPP阻燃GFRPA6提高了7%,冲击强度呈现出先减小后增加的趋势。当阻燃剂为18wt%份时,GFRPA6的阻燃性能达到UL94 V-0级,极限氧指数均高于28。
[Abstract]:Melamine polyphosphate (MPP) was prepared at different polymerization temperatures. In addition, tetraethyl orthosilicate was added to the preparation of MPP, and Sio _ 2 modified MPP flame retardant was prepared. The m MPP was characterized by FTIR SEMX and TG. Flame retardant glass fiber reinforced PA6 composites were prepared by melt blending m MPP, diethylaluminophosphate (ADP), glass fiber (GF) and nylon 6 (PA6). The mechanical properties and flame retardancy of GFRPA6 were characterized by universal tensile tester, oxygen index instrument and vertical combustor. The results show that the optimum polymerization temperature is 310 鈩，

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