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A scalable crosslinked fiberglass-aerogel thermal insulation composite
Applied Materials Today ( IF 8.3 ) Pub Date : 2020-09-29 , DOI: 10.1016/j.apmt.2020.100843
Lu An , Jieyu Wang , Donald Petit , Jason N. Armstrong , Changning Li , Yong Hu , Yulong Huang , Zefan Shao , Shenqiang Ren

Ceramic aerogels are attractive for thermal insulation due to its lightweight and low thermal conductivity, while it is indispensable to address the obstacle of its brittleness nature and large-scale manufacturing for building efficiency applications. The economical manufacturing of large-scale elastic thermal insulation aerogels has remained challenging. Herein, we report a universal manufacturing of the fiberglass reinforced aerogel composites where the architectured three-dimensional fiber networks with the cross-linked silica aerogel exhibit superinsulation and mechanical elasticity. These remarkable performances are obtained through in-situ cross-linking reaction between molecular assembly induced aerogel and fiberglass under ambient pressure drying environment, in which the interfacial interactions are verified from its infrared spectra. The resulting ultralight aerogel composite sheet exhibits a density of 0.1 g cm−3, large strain recovery (>50%), and low thermal conductivity (0.0253 W m−1 K−1). The thermal insulation aerogel composites shed light on the super-elastic aerogel manufacturing with scalability for energy saving building applications.



中文翻译:

可伸缩的交联玻璃纤维-气凝胶隔热复合材料

陶瓷气凝胶由于其轻质和低导热性而对隔热具有吸引力,同时它对于解决其脆性和为建筑效率应用而进行大规模生产的障碍也是必不可少的。大规模弹性绝热气凝胶的经济制造仍然具有挑战性。在这里,我们报告了玻璃纤维增​​强气凝胶复合材料的普遍生产,其中带有交联二氧化硅气凝胶的三维三维纤维网络具有超绝热性和机械弹性。这些出色的性能是通过分子组装诱导的气凝胶与玻璃纤维在常压干燥环境下进行原位交联反应获得的,其中界面相互作用通过其红外光谱进行了验证。-3,大的应变回复率(> 50%)和低的热导率(0.0253 W m -1  K -1)。隔热气凝胶复合材料为节能建筑应用提供了可扩展的超弹性气凝胶制造技术。

更新日期:2020-09-29
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