Resilient, fire-retardant and mechanically strong polyimide-polyvinylpolymethylsiloxane composite aerogel prepared via stepwise chemical liquid deposition
Resilient, fire-retardant and mechanically strong polyimide-polyvinylpolymethylsiloxane composite aerogel prepared via stepwise chemical liquid deposition
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通过分步化学液相沉积制备弹性、阻燃且机械强度高的聚酰亚胺-聚乙烯基聚甲基硅氧烷复合气凝胶
DOI：
10.1016/j.matdes.2019.108096
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发表时间：
2019-12
影响因子：
8.4
通讯作者：
Jun Shen
中科院分区：
文献类型：
--
作者：
Ze Zhang;Xiaodong Wang;Guoqing Zu;Kazuyoshi Kanamori;Kazuki Nakanishi;Jun Shen
采用分步化学液相沉积法（SCLD）制备了弹性、阻燃、机械强度高的聚酰亚胺-聚乙烯基聚甲基硅氧烷（PI-PVPMS）复合气凝胶。该合成是基于与（3-氨丙基）三甲氧基硅烷（APTMS）作为偶联剂在主链上提供反应性位点的PI-PVPMS交联网络结构的形成。我们成功地实现了PI在整个超柔性PVPMS凝胶骨架上的原位生长。研究了APTMS用量和沉积时间对最终样品性能的影响。所得到的PI-PVPMS复合气凝胶显示出优异的力学性能和热性能。它们可以支撑至少10，000倍于自身重量的重量，并且可以从60%的压缩应变恢复20%，弹性模量为32 MPa。对于热性能，它们在经受约650 °C的酒精灯外焰30 min后仍能保持其结构完整性。这些结果与简单的合成过程一起证明了使用PI-PVPMS复合气凝胶的建筑材料的潜力。此外，SCLD合成方法也可用于制备其他复合气凝胶，特别是含复杂聚合物的复合气凝胶。
Resilient, fire-retardant and mechanically strong polyimide-polyvinylpolymethylsiloxane (PI-PVPMS) composite aerogels have been prepared via stepwise chemical liquid deposition (SCLD). The synthesis is based on the formation of PI-PVPMS crosslinked network structure with (3-aminopropyl)trimethoxysilane (APTMS) as a coupling agent to provide reactive sites on the backbone. We successfully realize the PI in-situ growth on the whole super-flexible PVPMS gel skeleton with this simple method. The effect of APTMS amount and deposition time on the properties of final samples is deeply investigated. The resultant PI-PVPMS composite aerogels show excellent mechanical and thermal properties. They can support at least 10,000 times of their own weight and can recover 20% from a 60% of compressive strain, with an elastic modulus of 32 MPa. For thermal performance, they can maintain their structural integrity after being subjected to the alcohol lamp outer flame of around 650 °C for 30 min. These results together with the simple synthesis process demonstrate the potential for construction materials using PI-PVPMS composite aerogels. Furthermore, the SCLD synthesis method could also be applied to prepare other composite aerogels, especially for those containing complex polymer.
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影响因子：
8.6
作者：
Benad, Albrecht;Juerries, Florian;Eychmueller, Alexander
通讯作者：
Eychmueller, Alexander
影响因子：
--
作者：
C. Ziegler;A. Wolf;Wei Liu;A. Herrmann;N. Gaponik;A. Eychmüller
通讯作者：
C. Ziegler;A. Wolf;Wei Liu;A. Herrmann;N. Gaponik;A. Eychmüller
影响因子：
16.6
作者：
Yu, Zhi-Long;Yang, Ning;Yu, Shu-Hong
通讯作者：
Yu, Shu-Hong
DOI：
--
发表时间：
2020
期刊：
--
影响因子：
--
作者：
Guoqing Zu;K. Kanamori;Taiyo Shimizu;Yang Zhu;A. Maeno;Hironori;Kaji;K. Nakanishi;Jun Shenc-Jun-She
通讯作者：
Guoqing Zu;K. Kanamori;Taiyo Shimizu;Yang Zhu;A. Maeno;Hironori;Kaji;K. Nakanishi;Jun Shenc-Jun-She
影响因子：
8.6
作者：
Katti, A;Shimpi, N;Leventis, N
通讯作者：
Leventis, N