Volume 37 Issue 10
Oct.  2020
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XIAO Yuanyu, GAO Longfei, CHEN Bo, et al. Preparation and performance of quartz fiber/polyimide composites[J]. Acta Materiae Compositae Sinica, 2020, 37(10): 2394-2400. doi: 10.13801/j.cnki.fhclxb.20200215.001
Citation: XIAO Yuanyu, GAO Longfei, CHEN Bo, et al. Preparation and performance of quartz fiber/polyimide composites[J]. Acta Materiae Compositae Sinica, 2020, 37(10): 2394-2400. doi: 10.13801/j.cnki.fhclxb.20200215.001

Preparation and performance of quartz fiber/polyimide composites

doi: 10.13801/j.cnki.fhclxb.20200215.001
  • Received Date: 2019-11-27
  • Accepted Date: 2020-01-02
  • Available Online: 2020-02-17
  • Publish Date: 2020-10-15
  • The chemical reaction characterization and rheological property of KH-370 polyimide resin were characterized by DSC, TG, FTIR and rheometer. The QWB200/KH-370 composite was prepared by hot pressing technology with QWB200 quartz fiber as reinforcement.The effects of different process parameters (pressing temperature, pressure, curing temperature) on the mechanical properties of QWB200/KH-370 composites were studied. On this basis, the molding process system of the composites was determined.The mechanical strength of the composite at 400℃ and the dielectric properties at broad frequency were also investigated. According to the results, the best process parameters for the preparation of QWB200/KH-370 composites are: pressing temperature of 290-310℃, pressure range of 3.0-4.0 MPa, curing temperature of 380℃. The prepared QWB200/KH-370 composites exhibit excellent mechanical properties at room temperature, and the retention rates of mechanical strength at 400℃ is above 58%, showing good heat resistance. The QWB200/KH-370 composites show stable dielectric constant and dielectric loss at broad frequency from 1 GHz to 18 GHz.

     

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