氢氧化镁阻燃增强PET复合材料的性能研究

发布时间：2018-01-19 10:20

本文关键词： 聚对苯二甲酸乙二醇酯氢氧化镁共混力学性能阻燃性能　出处：《塑料科技》2017年09期 　论文类型：期刊论文

【摘要】：利用共混的方法制备了聚对苯二甲酸乙二醇酯/氢氧化镁(PET/Mg(OH)_2)复合材料,全面考察了Mg(OH)_2用量对阻燃增强PET/Mg(OH)_2复合体系力学性能和阻燃性能的影响。极限氧指数(LOI)测试结果表明,Mg(OH)_2有效提高了PET/Mg(OH)_2复合材料的阻燃性能,且随着Mg(OH)_2用量的增加,复合材料的LOI逐渐增大,而熔滴数量逐渐减少;UL 94结果表明,复合材料的燃烧时间变短,燃烧温度降低,使UL 94等级提高到了V-0;力学测试结果表明,随着Mg(OH)_2含量的增加,PET/Mg(OH)_2复合材料的断裂强度和屈服强度呈现先增大后减小的趋势,而复合材料的断裂伸长率则先减小后增大;PET/Mg(OH)_2复合材料的冲击强度随着Mg(OH)_2用量的增加而减小,即复合材料的韧性逐渐降低。总之,Mg(OH)_2对结晶性能和阻燃性能均具有明显的促进作用,具有较好的应用前景。
[Abstract]:Poly (ethylene terephthalate) / magnesium hydroxide (PET / MgO _ 2) composites were prepared by blending method. The effects of Mg(OH)_2 content on the mechanical properties and flame retardant properties of flame retardant reinforced PET/Mg(OH)_2 composite system were investigated. Mg(OH)_2 can effectively improve the flame retardancy of PET/Mg(OH)_2 composites, and with the increase of the content of Mg(OH)_2, the LOI of the composites increases gradually. However, the number of droplets decreased gradually. The results of UL94 show that the combustion time of the composite is shorter and the combustion temperature is lower, so that the grade of UL94 is raised to V-0. The results of mechanical tests show that the fracture strength and yield strength of PET / MgO / OHH _ (2) composites increase first and then decrease with the increase of Mg(OH)_2 content. However, the elongation at break of the composites decreases first and then increases. The impact strength of PET/Mg(OH)_2 composites decreases with the increase of Mg(OH)_2 content, that is, the toughness of the composites decreases gradually. Mg(OH)_2 has obvious promoting effect on crystallization and flame retardancy, and has a good application prospect.
【作者单位】：国网河南省电力公司电力科学研究院;河南恩湃高科集团有限公司;河南理工大学材料科学与工程学院;
【基金】：国网公司科技项目(52170215000F,521702160003)
【分类号】：TB332
【正文快照】： 聚对苯二甲酸乙二醇酯(PET)具有独特的化目前亟待解决的问题。学组成和分子结构,使其具有良好的综合性能,如目前,对PET进行阻燃的方法主要为通过物理物理性能、电性能、热性能、结晶性能以及耐化学药的作用将阻燃剂分散在PET基体中,这种方法的制品性能等,因此PET在建筑、包装

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