Flame retardant polyurethane sponge/MTMS aerogel composites with improved mechanical properties under ambient pressure drying
Flame retardant polyurethane sponge/MTMS aerogel composites with improved mechanical properties under ambient pressure drying
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常压干燥机械性能改善的阻燃聚氨酯海绵/MTMS气凝胶复合材料
DOI：
10.1007/s11051-020-04958-9
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发表时间：
2020-07
影响因子：
2.5
通讯作者：
Li Zhi
中科院分区：
文献类型：
--
作者：
Wu Xiaoxu;Huang Siqi;Zhang Yan;Shi Long;Luo Yan;Deng Xi;Liu Qiong;Li Zhi
针对聚氨酯海绵（PUS）热稳定性差、可燃性高和甲基三甲氧基硅烷（MTMS）气凝胶力学性能差的问题，研究了两者的组合对气凝胶性能的改善。聚氨酯海绵/MTMS气凝胶（PUSMA）复合材料的密度在0.032 ~ 0.13 g/cm 3之间随MTMS气凝胶含量的增加呈指数增加，导热系数在36.5 ~ 44.3 mW/（m K）之间呈线性增加。在接触角高达145.0°的情况下，保持了良好的疏水性。尽管组合是物理效应，但PUSMA复合材料表现出改善的机械性能，具有更好的完整性和增加的弹性模量。热重分析表明，协同效应提高了热稳定性。PUSMA复合材料的火焰燃烧概率和火焰燃烧的峰值热释放速率显著降低，这意味着PUSMA复合材料的阻燃性增强。该研究从复合材料的角度为开发新型高效气凝胶基隔热材料提供了新的思路。
Considering the low thermal stability and high flammability of polyurethane sponge (PUS) and the poor mechanical performance of methyltrimethoxysilane (MTMS) aerogels, their combination for improvement of characteristics was investigated. The density of prepared polyurethane sponge/MTMS aerogel (PUSMA) composites increased exponentially between 0.032 and 0.13 g/cm3with the MTMS aerogel content rising, and the thermal conductivity increased linearly between 36.5 and 44.3 mW/(m K). The good hydrophobicity was maintained with a contact angle up to 145.0°. Despite the combination being physical effects, the PUSMA composite presented improved mechanical properties with better integrality and increased elastic modulus. Thermogravimetric analyses suggested that the synergistic effect in the combination improved the thermal stability. The flame combustion probability and the peak heat release rate with flame combustion decreased significantly, implying enhanced flame retardancy of the PUSMA composite. This study from the perspective of composites provides new insight into the development of new high-efficiency aerogel-based thermal insulation materials.
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影响因子：
2.5
作者：
Li, Zhi;Cheng, Xudong;Yang, Hui
通讯作者：
Yang, Hui
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
DOI：
10.1016/j.msea.2011.03.013
发表时间：
2011-05
影响因子：
6.4
作者：
Xiaoguang Yang;Yantao Sun;D. Shi;Jinlong Liu
通讯作者：
Xiaoguang Yang;Yantao Sun;D. Shi;Jinlong Liu
影响因子：
3.5
作者：
A. Rao;G. Pajonk;S. Bhagat;P. Barboux
通讯作者：
A. Rao;G. Pajonk;S. Bhagat;P. Barboux
影响因子：
5.8
作者：
Mahani, A. Abolghasemi;Motahari, S.;Mohebbi, A.
通讯作者：
Mohebbi, A.