The microstructure and ablation behavior of carbon fiber/phenolic aerogel composites

ZHU Zhao-xian; Dong Jin-xin; JIA Xian-feng; LONG Dong-hui; LING Li-cheng

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Article Navigation > New Carbon Mater. > 2018 > 33(4): 370-376

ZHU Zhao-xian, Dong Jin-xin, JIA Xian-feng, LONG Dong-hui, LING Li-cheng. The microstructure and ablation behavior of carbon fiber/phenolic aerogel composites. New Carbon Mater., 2018, 33(4): 370-376.

Citation:

ZHU Zhao-xian, Dong Jin-xin, JIA Xian-feng, LONG Dong-hui, LING Li-cheng. The microstructure and ablation behavior of carbon fiber/phenolic aerogel composites. New Carbon Mater., 2018, 33(4): 370-376.

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The microstructure and ablation behavior of carbon fiber/phenolic aerogel composites

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received Date: 2018-04-20
Accepted Date: 2018-08-30
Rev Recd Date: 2018-07-18
Publish Date: 2018-08-28

Abstract

Abstract

Carbon fiber/phenolic aerogel composites (C/PA) were prepared through sol-gel polymerization of a phenolic resin followed by ambient pressure drying using carbon fiber mats as the reinforcements. The composites have low densities (0.27-0.40 g/cm³) and low room-temperature thermal conductivities (0.056-0.068 W·(m·K)^-1). The bend strength of the composite prepared from the pierced carbon fiber mat (P-C/PA) is twice that of the laminated carbon fiber mat (L-C/PA). The highest bend strength obtained was 35.9 MPa for the P-C/PA with a density of 0.40 g/cm³. Under ablation at 2000℃ for 60 s, the mass and linear ablation rates of the P-C/PA were 0.0043 g/s and 0.0147 mm/s, respectively. The phenolic nanoparticles in the aerogel were easily decomposed, evaporated and sublimed to remove superficial heat while the porous network of the aerogels effectively prevented heat transfer from the surface to the interior of the composite. C/PA composites are excellent candidates for bifunctional ablation/insulation applications.
- Thermal protection material,
- Phenolic aerogel/carbon fiber composites,
- Ablation,
- Insulation

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References(20)

References

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