【摘要】 采用不同玻纤(GF)处理工艺,改变制备聚对苯二甲酸乙二酯(PET)/GF复合材料试样过程中熔体流动场剪切速率,通过红外光谱(IR)仪、差示扫描量热(DSC)仪分析和扫描电镜(SEM)观察,研究GF处理工艺和熔体流动场对PET/GF复合材料微观结构的影响。结果表明,硅烷偶联剂与聚合物成膜剂并用处理GF,不仅能增强GF与树脂基体之间的化学键合,提高树脂的结晶度,形成不易发生界面脱粘的稳定界面层,并且使GF沿树脂流动方向取向变得容易,其中A1100硅烷偶联剂与低分子量PET成膜剂并用处理的GF增强PET复合材料的界面粘着状态最佳。更多还原

【Abstract】 By using different glass fiber treatment technology and altering the shear rate of melt flow flield in preparation of PET/GF composites,the influences of glass fiber treatment technology and melt flow field on microstructure of PET/GF composites were studied through IR,DSC,SEM analyses.The results showed that using polymer film forming agent together with silicane coupling agent could not only enhance the chemical bond between GF and resin matrix,increasing crystallinity of the resin,forming stable boundary layer,but also make GF orientating easier along the flow direction in resin.Optimum interface adhesion was obtained by using silicane coupling agent together with low molecular PET film forming agent,the interface adhesnion by using the polyurethane(PUR-T) film forming agent was inferior to the former,and the interface adhesion by suing PBT film forming agent relatively worse.更多还原