用于透明聚（甲基倍半硅氧烷）气凝胶增材制造的溶胶 - 凝胶反应中的活化延迟
Activation-retardation in sol-gel reactions for additive manufacturing of transparent poly(methylsilsesquioxane) aerogels.
作者信息
Gao Mengyue, Zhang Junyan, Xu Chengjian, Yu Xiaoxiao, Chen Linfeng, Zheng Junjie, Zuo Weiwei, Zhang Xinhai, Cheng Yanhua, Zhu Meifang
机构信息
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China.
出版信息
Nat Commun. 2025 Sep 2;16(1):8212. doi: 10.1038/s41467-025-63356-8.
Coupling superior thermal insulation performance with high transparency for solar transmission and excellent processability in aerogels is a challenging yet promising subject. Here, we report a direct ink writing strategy to create transparent polymethylsilsesquioxane (PMSQ) aerogels from gel inks with desired rheology, by merely using acid-base dual modulators to achieve "activation-retardation" of polycondensation reaction. The printed aerogels are pure PMSQ, have a transmittance of 97% in the visible-near infrared range, thermal conductivity (16.2 mW m K) lower than that of still air, and low density (0.08 g cm). We demonstrate new possibilities of our 3D-printed transparent aerogels, such as device encapsulation for heat insulation and cylindrical cooling shields for lighting.
将优异的隔热性能与高太阳能透过率的透明度以及气凝胶中出色的可加工性相结合，是一个具有挑战性但前景广阔的课题。在此，我们报告一种直接墨水书写策略，通过仅使用酸碱双调节剂来实现缩聚反应的“活化-延缓”，从具有所需流变学的凝胶油墨中制备透明聚甲基倍半硅氧烷（PMSQ）气凝胶。打印出的气凝胶为纯PMSQ，在可见-近红外范围内的透过率为97%，热导率（16.2 mW m⁻¹ K⁻¹）低于静止空气，且密度低（0.08 g cm⁻³）。我们展示了我们的3D打印透明气凝胶的新可能性，例如用于隔热的器件封装和用于照明的圆柱形冷却罩。
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