Fabrication, Mechanical and Dielectric Characterization of 3D Orthogonal Woven Basalt Reinforced Thermoplastic Polyimide Composites

• 作者: Jianfei Xie Lan Yao Shuna Hou Xianhong Zheng Ye Kuang Yiping Qiu
• 来源期刊: 纺织科学与技术(英文)
• 学科: 化学
• 关键词: 3D ORTHOGONAL Woven Structure BASALT Fiber THERMOPLASTIC POLYIMIDE BENDING PROPERTIES Dielectric PROPERTIES
• 年，卷（期）: 2015,（1）
• 页码范围: 35-44
• 页数: 10页
• 分类号: O6

摘要

The 3D orthogonal woven basalt fiber reinforced polyimide (PI) composites were fabricated and characterized in this study. The PI film was firstly prepared to determine PI processing parameters. Fourier transform infrared (FTIR) analysis showed that 300°C was the suitable imidization temperature. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) results showed relatively good thermal properties of the PI film. In the fabrication of composites, the multi-step impregnation method was applied. The bending properties of 3 mm-thick composite showed increasing trend in all and the second-time impregnated composite had much higher value than the first-time impregnated composite. Moreover, the bending fracture mode photos showed obvious creases except for the first-time impregnated materials, which agreed well with the bending property values. The dielectric constants for the composites were complex because they had not regular value following the mixing rule of the composites, which was mainly due to the interfacial polarization and other effects in the fabrication processing.