玻璃纤维增强HDPE的性能及界面研究

通过扫描电镜观察、红外光谱分析及材料力学性能试验等方法考察了不同界面粘结形式下玻璃纤维增强HDPE的力学性能及其与界面粘结性的关系。结果表明,复合过程中加入的界面反应性试剂及其与HDPE接枝而形成的接枝物可与玻纤表面及其硅烷发生化学作用或交(?),从而显著提高复合材料的界面粘结强度及其力学性能。

STUDIES ON THE PROPERTIES AND THE INTERFACIAL SURFACE OF THE GLASS FIBER-REINFORCED HIGH DENSITY POLYETHYLENE

In this paper the mechanical properties of glass fiber-reinforced HDPE and their dependence on the interfacial adhesion have been studied by using scanning electron microscopy. Fourier transform infrared spectrometer and material universal testing machine,etc. The results show that in the compounding process of glass fiber and HDPE , the added interfacial reactive agents (MAH,A174)and the formed product from their grafting with HDPE can reacted or cured with the multilayer silane coupling agent on the surface of glass fiber,and these leaded to forming a resin covered layer on the surface of glass fiber,obviously increased the interfacial phase module, the interfacial bond strength and the mechanical properties of the composite. .Meanwhile it was found that the produced interfacial stresses from the contractive difference between glass fiber and matrix in injection molding can be reasonably relaxed by the change of crystallinge morphology of the matrix in the area surrounding glass fiber.