Materials Reports  2021, Vol. 35 Issue (Z1): 548-551 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Design and Properties of Multifunctional Phenolic Aerogel Composites |
| WANG Ruijie, GUO Jianye, SONG Han, GUO Hui, LI Wenjing
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| Research Institute of Aerospace Special Materials and Technology, Beijing 100074, China |
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Abstract In order to solve the problem of weight,ablation and heat insulation of single structure about insulation material in practical application, in this paper, select three kinds of flexible fiber fabrics with different temperature resistance points to design the functional gradient thermal protection, by using the 2.5D needle-punching processes prepare functionally gradient fiber reinforcements, which has non-uniform density. The multifunctional phenolic aerogel composites has been prepared, this preparation process includes the following key steps: modifying the phenolic re-sin, impregnating the fiber reinforcement in the solgel process, supercritical drying, optimizing the molding process parameters and so on. Completed the performance tests of the product, such as the force and the teat, and focusing on the ablation performance of the material. The tests showed this composite material has the characteristics of light weight, low thermal conductivity, and ablation/heat insulation and so on. It was further verified the application feasibility of phenolic aerogel composites with gradient functional.
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Published: 16 July 2021
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| About author:: Ruijie Wang, works in Research Institute of Aerospace Special Materials and Processing Technology as a Professor, graduated from Beijing University of Chemical Technology in July 2008. She is focusing on the research of thermal protection materials, and has published about eight journal papers, applied two national invention patents and which have been authorized.Wenjing Li, works in Research Institute of Aerospace Special Materials and Processing Technology as a senior engineer, graduated from RWTH Aachen University in July, 2010. She is major in thermal insulation materials, and has published about ten journal papers, applied about sixteen national invention patents and which have been authorized. |
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