阻燃玻纤增强尼龙6复合材料的制备及性能研究

发布时间：2018-06-21 13:53

本文选题：阻燃剂 + 玻纤增强复合材料　；参考：《矿冶工程》2017年04期

【摘要】：制备了三聚氰胺磷酸盐(MP)、三聚氰胺聚磷酸盐(MPP)以及改性三聚氰胺聚磷酸盐(mMPP),并制得了添加mMPP的阻燃玻纤增强PA6复合材料。采用FTIR、SEM、XRD和TG对MPP和mMPP进行了表征,采用万能拉伸试验机、氧指数仪和垂直燃烧仪对阻燃玻纤增强PA6复合材料的力学和阻燃性能进行了测试。结果表明,mMPP颗粒比MPP颗粒小,呈斜方晶型结构;SiO_2溶胶对MPP实现了较好的改性。随着SiO_2溶胶添加量增加,mMPP热稳定性先增加后降低;复合材料拉伸强度呈先增加后降低的趋势,当SiO_2溶胶添加量为mMPP的6%时,复合材料拉伸强度最大,较MPP阻燃复合材料提高了7%;冲击强度呈先减小后增加的趋势。当复合阻燃剂含量为18%时,阻燃复合材料达到了UL 94-V0级,极限氧指数均大于28。
[Abstract]:Melamine phosphate (MPP), melamine polyphosphate (MPP) and modified melamine polyphosphate (mMPP) were prepared, and flame retardant glass fiber reinforced PA6 composites with mMPP were prepared. The properties of MPP and mMPP were characterized by FTIR SEMX XRD and TG. The mechanical and flame retardant properties of flame retardant glass fiber reinforced PA6 composites were tested by universal tensile tester, oxygen index and vertical combustion apparatus. The results show that mMPP particles are smaller than those of MPP particles, and the modified MPP particles are well modified by sio _ 2 sol with an oblique square crystal structure. With the increase of SiO2 sol content, the thermal stability of mMPP first increases and then decreases, and the tensile strength of the composites increases first and then decreases. When SiO2 sol content is 6% of mMPP, the tensile strength of the composites is the highest. Compared with MPP flame retardant composites, the impact strength of the composites increased by 7%, and the impact strength decreased first and then increased. When the content of composite flame retardant is 18, the flame retardant composite can reach UL 94-V 0, and the limit oxygen index is more than 28.
【作者单位】：湖南工业大学包装与材料工程学院;
【基金】：国家自然科学基金(51374102) 湖南省自然科学基金(2017JJ4026)
【分类号】：TB332

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