Sherif Galal, Chukov Dilyus I, Tcherdyntsev Victor V, Torokhov Valerii G, Zherebtsov Dmitry D
Center of composite materials, National University of Science and Technology "MISIS", Leninskiy prosp. 4, Moscow 119049, Russia.
Production and Design Dept., Faculty of Engineering, Minia University, Minia 61111, Egypt.
Polymers (Basel). 2020 Apr 13;12(4):902. doi: 10.3390/polym12040902.
The effect of thermal treatment of glass fibers (GF) on the mechanical and thermo-mechanical properties of polysulfone (PSU) based composites reinforced with GF was investigated. Flexural and shear tests were used to study the composites' mechanical properties. A dynamic mechanical analysis (DMA) and a heat deflection temperature (HDT) test were used to study the thermo-mechanical properties of composites. The chemical structure of the composites was studied using IR-spectroscopy, and scanning electron microscopy (SEM) was used to illustrate the microstructure of the fracture surface. Three fiber to polymer ratios of initial and preheated GF composites (50/50, 60/40, 70/30 (wt.%)) were studied. The results showed that the mechanical and thermo-mechanical properties improved with an increase in the fiber to polymer ratio. The interfacial adhesion in the preheated composites enhanced as a result of removing the sizing coating during the thermal treatment of GF, which improved the properties of the preheated composites compared with the composites reinforced with initial untreated fibers. The SEM images showed a good distribution of the polymer on the GF surface in the preheated GF composites.
研究了玻璃纤维（GF）的热处理对以聚砜（PSU）为基体、GF增强的复合材料的力学性能和热机械性能的影响。采用弯曲和剪切试验研究复合材料的力学性能。采用动态力学分析（DMA）和热变形温度（HDT）试验研究复合材料的热机械性能。利用红外光谱研究复合材料的化学结构，并用扫描电子显微镜（SEM）对断裂表面的微观结构进行表征。研究了初始和预热GF复合材料的三种纤维与聚合物比例（50/50、60/40、70/30（重量%））。结果表明，随着纤维与聚合物比例的增加，力学性能和热机械性能得到改善。由于在GF的热处理过程中去除了浸润剂涂层，预热复合材料中的界面粘结增强，与用未处理的初始纤维增强的复合材料相比，预热复合材料的性能得到改善。SEM图像显示，在预热的GF复合材料中，聚合物在GF表面分布良好。
