| 酚改性MF气凝胶的制备及表征 |
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| 引用本文： | 尚承伟, 任洪波, 张林, 等. 酚改性MF气凝胶的制备及表征[J]. 强激光与粒子束, 2009, 21(12). |
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| 作者姓名： | 尚承伟 任洪波 张林 胡文成 |
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| 作者单位： | 电子科技大学,微电子与固体电子学院,成都,610054;中国工程物理研究院,激光聚变研究中心,四川,绵阳,621900;中国工程物理研究院,激光聚变研究中心,四川,绵阳,621900;电子科技大学,微电子与固体电子学院,成都,610054 |
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| 基金项目： | 中国工程物理研究院重大基金项目 |
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| 摘 要： | 以三聚氰胺和甲醛为原料制备MF气凝胶,在凝胶化过程中加入酚类化合物对MF体系进行改性,获得相应的湿凝胶,湿凝胶经超临界干燥,制备出密度为最低可达50 kg·m-3的酚改性MF气凝胶。采用高分辨透射电镜、场发射扫描电镜、红外吸收光谱和热重分析表征了酚改性MF气凝胶的组成、结构以及热性能。结果表明:酚类的引入,MF气凝胶体系由堆积型结构变成链球状多孔纳米结构,同时在较低的温度下（＜300 ℃）,体系的热稳定性有所提高。
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| 关 键 词： | 三聚氰胺-甲醛气凝胶 酚改性 超临界干燥 热稳定性 |
| 收稿时间： | 1900-01-01; |
Preparation and characterization of phenolic-melamine-formaldehyde composite aerogel |
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| shang chengwei, ren hongbo, zhang lin, et al. Preparation and characterization of phenolic-melamine-formaldehyde composite aerogel[J]. High Power Laser and Particle Beams, 2009, 21. |
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| Authors: | shang chengwei ren hongbo zhang lin hu wencheng |
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| Affiliation: | 1. School of Microelectronics and Solid-State Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China;;;2. Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China |
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| Abstract: | Phenolic-doped melamine-formaldehyde(MF) aerogels were investigated by adding resorcin to MF sol before the formation of crosslink. The solvents in wet gel were then exchanged with ethanol. After CO2 supercritical drying process, the doped MF areogels were prepared with the lowest density of about 50 kg·-3. The samples were also characterized by HRTEM,FESEM, IR absorption spectroscopy and thermogravimetric analyses. The results indicates that the structures of the aerogels are different by changing the mole ratio of melamine to resorcin, and the thermal stability is improved under the temperature of 300 ℃. |
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| Keywords: | melamine-formaldehyde aerogel phenolic doped supercritical drying thermal stability |
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