Effect of thermal aging on microstructures of aramid composites

详细信息    查看全文

• 作者：Chang-Sheng Li ; Xian-Cong Huang ; Li Yan ; Hong Zhou ; Zhihao Shen and Xing-He Fan
• 刊名：Polymer Composites
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：38
• 期：2
• 页码：252-259
• 全文大小：830K
• ISSN：1548-0569

文摘

The effect of thermal aging on aramid composites was assessed in this study. Poly(vinyl butyral)/phenol formaldehyde (PVB/PF) resin was used to prepare the aramid composites, which were programmed at 70, 90, 120, and 150°C for various periods of time up to 2,688 h. The microstructures and aging mechanisms were investigated by dynamical mechanical thermal analysis, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Ballistic limited velocity of composites was determined by 1.1g Fragment projectiles. The results suggest that three microphases exist in the PVB/PF system. Each phase exhibits different aging mechanisms at different aging temperatures. Reduction of ballistic limited velocity was strongly affected by aging conditions. POLYM. COMPOS., 38:252–259, 2017.