玻纤增强PPESK复合材料及其性能研究

以溶液共混-共沉淀的方式制备了玻纤增强含二氮杂萘联苯结构的聚醚砜酮(PPESK)复合材料；考察了两种长度的玻纤对GF／PPESK复合材料力学性能的影响，并以较长的玻纤为例，通过SEM对复合材料的形态进行观察，用DSC和TGA对其热性能进行分析，同时分析偶联剂在复合材料中的作用。结果表明：较长的玻纤更有利于提高复合材料的力学性能；当GF含量为20％时，两种GF／PPESK复合材料的力学性能都达到最大。偶联剂的加入对于改善玻纤与PPESK的界面粘结、提高玻纤对PPESK的增强效果具有重要作用。随着玻纤含量的增加，复合材料的玻璃化转变温度和热降解温度都不同程度地提高。

Study on Glass Fiber Reinforced Poly(phthalazinone ethersulphone ketone) Composites

Glass fiber(GF) reinforced poly(phthalazinone ether suphone ketone)composites were prepared by solvent-coprecipation.Morphology and thermal properties of the composites were investigated by means of scanning electron microscopy, differential scanning calorimetry and thermogravimetric analysis. The effect of silane coupling agent,the content and species of GF on mechanical properties were also studied.The results show that the addition of silane coupling agent is beneficial in improving the interfacial adhesion and mechanical properties of GF/PPESK composites.When the content of GF is 20 %,the composite exhibits the best mechanical properties. Thermal performance is also improved by adding GF to PPESK, resulting in the rise of T g and heat degradation temperature.