Materials Reports  2020, Vol. 34 Issue (Z2): 525-527 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Effects of Different Resin Precursor Ratios on Properties of Inorganic Phenolic Aerogel Insulation Composites |
| SONG Han1, XU Chunxiao1, WANG Xiangning2, LIU Tao1, SU Lijun1, SUN Kuo1, GUO Hui1, LI Wenjing1
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1 Aerospace Institute of Advanced Materials & Processing Technology, Beijing 100074, China
2 The Sixth Representative Office in Beijing of Rocket Force, Beijing 100074, China |
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Abstract Phenolic aerogel/quartz fiber thermal-protect composites have been prepared by resin transfer molding with different proportion of resin precursors. The properties of composites made of different resin solid contents, curing agent contents, and SiO2 solid contents have been discussed. It shows that the shrinkage rate and density of composites increases coincide with more resin solid content, while the compression deformation and the thermal conductivity decreases first and then increases. In addition, the shrinkage rate of composites increases and the compression deformation decreases obviously as curing agent content is raised, while the composite density slightly increases, and the thermal conductivity tends to decrease first and then increase. Moreover, along with the increase of SiO2 solid content, the changes of shrinkage rate and compression deformation are not obvious, while the thermal conductivity and density of composite hardly increase marginally. Besides, the visco-sity of resin precursors and residual weight rate of composite rise. By regulating the proportion of resin precursors, the shrinkage, mechanics, heat insulation and density of the material could be adapted to the demands of high-performance thermal protection applications.
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Published: 08 January 2021
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| About author:: Han Song, senior engineer, Aerospace Institute of Advanced Materials & Processing Technology, who received his master degree in chemical technology from Institute of Process Engineering, Chinese Academy of Sciences in Sep. 2006—Jun. 2009. He has been wor-king in the Aerospace Institute of Advanced Materials & Processing Technology since graduation. More than 10 national invention patents have been applied for by the first author, and 8 patents have been authorized. The research work mainly focuses on the development of advanced thermal insulation composite materials in aerospace and aviation field, the development and engineering application of thermal insulation composite materials, including the development of new lightweight ablative aerogel insulation mate-rials, high-temperature sandwich insulation materials, high-temperature rigid thermal insulation materials, ultra-high temperature fiber composite insulation materials, high-temperature resistant coating materials and other research projects. |
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