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首页> 外文期刊>Journal of Applied Polymer Science >SiCwhiskers-reinforced polyimide aerogel composites with robust compressive properties and efficient thermal insulation performance
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SiCwhiskers-reinforced polyimide aerogel composites with robust compressive properties and efficient thermal insulation performance

机译：SICWHINKERS - 增强的聚酰亚胺气凝胶复合材料，具有坚固的压缩性能和高效的保温性能

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摘要

Polyimide (PI) aerogels enable promising application in many fields but are always inhibited by their weak resistance to high temperature and low mechanical properties. Herein, novel PI aerogel composites with efficient heat insulation and high compressive performance are prepared by introducing Silicon carbide whiskers (SiCw) as reinforcement. The SiCwin aerogel function as shrinkage inhibitor and high temperature stabilizer. The addition of SiCwexhibits obvious enhancement and toughening effect, the compressive strength of the PI aerogel composites increases from 1.09 to 1.96 MPa. These PI aerogel composites also show enhanced high temperature stability. The as-prepared PI aerogel composites possess integrated properties of high-temperature resistance, low thermal conductivity, and high compressive strength, which can be the candidate for the application in aerospace.
机译：聚酰亚胺（PI）气凝胶在许多领域都有很好的应用前景，但由于其耐高温性差和机械性能低而一直受到抑制。在此，通过引入碳化硅晶须（SiCw）作为增强体，制备了具有高效隔热和高压缩性能的新型PI气凝胶复合材料。SiCwin气凝胶具有收缩抑制剂和高温稳定剂的功能。SiC的加入具有明显的增强增韧效果，PI气凝胶复合材料的抗压强度从1.09 MPa提高到1.96 MPa。这些PI气凝胶复合材料还表现出增强的高温稳定性。所制备的PI气凝胶复合材料具有耐高温、导热系数低、抗压强度高等综合性能，有望在航空航天领域得到应用。

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