不同含量膨胀性阻燃剂对长玻璃纤维增强PBT复合材料性能的影响  

Effect of Different Content of Intumescent Flame Retardant on Properties of Long Glass Fiber Reinforced PBT Composites

作　　者：周武雷[1] 张道海[2,3] 赵婉[2] 奚可明[1] 潘晓慧[1] 

机构地区：[1]黔南民族师范学院物理与电子科学学院,贵州都匀558000 [2]贵州大学材料与冶金学院,贵州贵阳550025 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《塑料工业》2016年第7期79-83,共5页China Plastics Industry

基　　金：贵州省科技厅科技联合基金项目(黔科合LH字[2015]7708);贵州省教育厅2015年度优秀科技创新人才项目(黔教合KY字[2015]501);贵州省科技计划项目(黔科合计省合[2014]7008)

摘　　要：以长玻璃纤维(LGF)/聚对苯二甲酸丁二醇酯(PBT)复合材料为基体,加入膨胀性阻燃剂(IFR),研究了不同含量的IFR对LGF/PBT复合材料的燃烧性能、结晶性能及流变性能的影响。通过垂直燃烧(UL 94)和极限氧指数(LOI)测试得出,在IFR的含量为10%时,LGF/PBT/IFR复合材料通过UL94V-0级且LOI为28.2%;通过差示扫描量热仪、平板流变仪和傅里叶红外光谱分析得出,IFR与基体在熔融挤出后部分发生化学反应,引入极性基团,致使基体分子链运动困难,从而表现出复合材料的结晶度下降,储存模量增大,复合黏度增大,最终影响到复合材料的力学性能。The effects of different content of intumescent flame retardant （IFR） on the crystallization behavior and rheological properties of long glass fiber （LGF）/polybutylene terephthalate （PBT） composites were studied in this paper. Through the UL94 and limiting oxygen index （LOI） tests, when the IFR content was 10wt%, the LGF/PBT/IFR achieved V-0 ranking and the value of LOI was 28.2%. With the analysis of differential scanning calorimetry （DSC） and plate rheometer and Fourier transform infrared spectroscopy （YFIR）, it is obtained that the chemical reaction was taken place between IFR and the matrix through melt extrusion, which the polar groups were introduced into the molecular chain, resulting in the movement difficulties of the matrix molecular chains and a decrease in the crystallinity of the composite. In addition, both the storage modulus and the complex viscosity were increased; thus, the composite materials＇mechanical properties were affected.

关 键 词：聚对苯二甲酸丁二醇酯 膨胀性阻燃剂 燃烧性能 结晶性能 流变行为 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ317[化学工程—高聚物工业]