Volume 40 Issue 2
Feb.  2023
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MENG Haoyu, CHEN Bo, SONG Jiang, et al. Compression failure life prediction and verification of polymethacrylimide foam[J]. Acta Materiae Compositae Sinica, 2023, 40(2): 1218-1228. doi: 10.13801/j.cnki.fhclxb.20220314.003
Citation: MENG Haoyu, CHEN Bo, SONG Jiang, et al. Compression failure life prediction and verification of polymethacrylimide foam[J]. Acta Materiae Compositae Sinica, 2023, 40(2): 1218-1228. doi: 10.13801/j.cnki.fhclxb.20220314.003

Compression failure life prediction and verification of polymethacrylimide foam

doi: 10.13801/j.cnki.fhclxb.20220314.003
  • Received Date: 2022-01-13
  • Accepted Date: 2022-03-03
  • Rev Recd Date: 2022-02-15
  • Available Online: 2022-03-16
  • Publish Date: 2023-02-15
  • Polymethacrylate imide (PMI) foam is widely used in aerospace field because of its superior performance. This paper mainly studies the functional characteristics of PMI foam in the field of cartridge adapter, and mainly studies its compression creep characteristics at room temperature. According to the working conditions and creep characteristics of polymer materials, the "time strengthening" model was adopted to design experiments, and the PMI foam with densities of 0.075 g/cm3 and 0.110 g/cm3 were respectively tested for 180 days under normal temperature compression creep. By analyzing and fitting the experimental data, the compression creep life of two PMI foam with different densities at room temperature and 1250 N was predicted. The compression creep failure life of PMI foam with density of 0.075 g/cm3 is about 11 years. The density of 0.110 g/cm3 PMI foam is about 53 years, and the reliability of the model is verified and analyzed.

     

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