Preparation and properties of high strength-medium density nanoporous resin-based ablation/insulation integrated composites

QIAN Zhen; ZHANG Hongyu; ZHANG Qikai; WANG Feng; WANG Sheng; ZHAO Jian; NIU Bo; ZHANG Yayun; LONG Donghui

doi:10.13801/j.cnki.fhclxb.20211223.001

Volume 40 Issue 1

Jan. 2023

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QIAN Zhen, ZHANG Hongyu, ZHANG Qikai, et al. Preparation and properties of high strength-medium density nanoporous resin-based ablation/insulation integrated composites[J]. Acta Materiae Compositae Sinica, 2023, 40(1): 83-95. doi: 10.13801/j.cnki.fhclxb.20211223.001

Citation:

QIAN Zhen, ZHANG Hongyu, ZHANG Qikai, et al. Preparation and properties of high strength-medium density nanoporous resin-based ablation/insulation integrated composites[J]. Acta Materiae Compositae Sinica, 2023, 40(1): 83-95. doi: 10.13801/j.cnki.fhclxb.20211223.001

Citation:

QIAN Zhen, ZHANG Hongyu, ZHANG Qikai, et al. Preparation and properties of high strength-medium density nanoporous resin-based ablation/insulation integrated composites[J]. Acta Materiae Compositae Sinica, 2023, 40(1): 83-95. doi: 10.13801/j.cnki.fhclxb.20211223.001

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Preparation and properties of high strength-medium density nanoporous resin-based ablation/insulation integrated composites

doi: 10.13801/j.cnki.fhclxb.20211223.001

1.
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
2.
Beijing Xinfeng Machinery Factory, Beijing 100854, China
3.
Beijing Institute of Electronic System Engineering, Beijing 100854, China

Funds: National Natural Science Foundation of China (22078100; 52102098); Shanghai Sailing Program (20YF1410600)

Received Date: 2021-11-18
Accepted Date: 2021-12-11
Rev Recd Date: 2021-12-08

Available Online: 2021-12-23

Publish Date: 2023-01-15

Abstract

Abstract

To meet the extreme thermal protection requirement of new-generation spacecrafts, nanoporous resin composites (IPC-90) with medium-density, high strength and excellent ablation/insulation properties had been prepared via a sol-gel polymerization using phenolic resin as nanoporous matrix and needled fiber fabric as the reinforcement. The effects of fiber type, namely quartz fiber (QF/IPC-90) and carbon fiber (CF/IPC-90) on the microstructure, mechanical properties, static thermal insulation, and ablation properties of the composites were systematically studied. The as-prepared IPC-90 with medium density of ~0.95 g/cm³ has excellent mechanical properties with tensile strength >120 MPa and bending strength >90 MPa. Due to the introduction of nanopore resin matrix and lightweight fiber felt, the resultant IPC-90 has relatively low room-temperature thermal conductivities (0.089 W/(m∙K) for QF/IPC-90 and 0.120 W/(m∙K) for CF/IPC-90), as well as low effective thermal conductivities at 1000℃. Furthermore, the possible ablation mechanisms under different temperatures were analyzed. It is found that both QF/IPC-90 and CF/IPC-90 have low linear ablation rates under the oxygen-propane ablation test below 2000℃, which are mainly caused by resin matrix pyrolysis and shrinkage. However, under the oxy-acetylene ablation test above 2000℃, the ablation of CF/IPC-90 is dominated by ultrahigh temperature carbonation-sublimation, while the severe ablation of CF/IPC-90 is caused by the melting of quartz fiber. Under the oxy-acetylene ablation of 4.2 MW/m², the linear ablation rates of CF/IPC-90 and QF/IPC-90 are 0.073 mm/s and 0.186 mm/s, respectively, being similar to the conventional high-density phenolic composites.
- thermal protection material,
- nanoporous matrix,
- resin-based composite,
- quartz fiber,
- ablation/insulation integrated performance,
- carbon fiber
Long Abstrsct
Innovation Points

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References(30)

References

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