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生物基基托气凝的微观结构演变为热绝缘体,具有优越的防潮/疲劳性和抗热冲击性
Yanrong Liao1, Sizhao Zhang2, Shuai Yu1
1Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China; Thermal Control Technology Laboratory of Aircraft in Space Environment, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China.
International journal of biological macromolecules
|August 30, 2024
概括
来自奇托和细菌纤维素的新生物基气凝提供优越的防潮,耐疲劳和阻燃性. 这些先进材料显示了节能建筑和其他应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 生物材料是一种生物材料.
背景情况:
- 生物基气凝,特别是酸盐气凝,由于它们的环保性质和理想的特性,如高表面积和低导热性,是有前途的.
- 然而,内在的局限性阻碍了它们的多功能应用,需要创新的方法来改善财产.
研究的目的:
- 通过超分子相互作用开发具有增强多功能性质的新型素/细菌纤维素气凝.
- 解决当前生物基气凝的局限性,重点关注耐湿性,耐疲劳性,热冲击稳定性和阻燃性.
主要方法:
- 使用超分子相互作用制造基托桑/细菌纤维素气凝.
- 气凝属性的全面描述,包括机械强度,导热性,耐湿性,热冲击稳定性和阻燃性.
- 在不同应变条件下对微观结构演化的研究.
主要成果:
- 开发的气凝具有卓越的机械强度 (支自身重量的10676倍以上) 和耐疲劳性 (10,000个循环后的变形微不足道).
- 实现了显著的耐湿性 (在160小时内<0.88%的吸收) 和热冲击稳定性 (在-30°C和60°C之间的200个周期).
- 气凝显示出出色的阻燃性,在0.6s内自灭,疏水处理增加了27%的压力应力.
结论:
- 基托桑/细菌纤维素气凝的基于超分子相互作用的构造导致同时改善耐湿性,耐疲劳性,热冲击稳定性和阻燃性.
- 这些多功能生物基气凝具有在节能建筑和其他先进材料领域的应用的巨大潜力.
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