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A platform for research: civil engineering, architecture and urbanism
Preparation method of polyethylene glycol modified carbon aerogel/fiber composite material
The invention discloses a preparation method of a polyethylene glycol modified carbon aerogel/fiber composite material. The method comprises the following steps: stirring resorcinol (R), formaldehyde (F), polyethylene glycol (PEG), a catalyst (C) and water (W) in a water bath heating state until the components are completely dissolved to obtain a mixed solution A, and standing at normal temperature to obtain RF sol; immersing the pre-oxidized fiber into the RF sol, performing standing treatment, and taking out to obtain a mixture of the carbon precursor fiber and the RF sol; putting the mixture into hot water for aging; placing the mixture into a non-polar solvent for replacement to form organic hydrogel; and drying the hydrogel to finally obtain the RF aerogel; and putting the RF aerogel into a carbonization furnace to prepare the carbon fiber reinforced carbon aerogel composite material (CF/CA). In this way, reaction conditions are controllable, and repeatability is good. The obtained carbon aerogel is large in specific surface area, uniform in pore size distribution, good in cohesiveness with a fiber felt pad, not prone to falling off and excellent in high-temperature heat insulation performance.
本发明公开了一种聚乙二醇改性炭气凝胶/纤维复合材料的制备方法，包括以下步骤：将间苯二酚（R）、甲醛（F）、聚乙二醇（PEG）、催化剂（C）和水（W）在水浴加热状态下搅拌至完全溶解得到混合液A，放在常温下静置后得到RF溶胶；将预氧丝浸入RF溶胶，静置后取出得到炭前驱体纤维与RF溶胶的混合物；将混合物放进热水中进行老化；将混合物放进非极性溶剂中置换，形成有机水凝胶；干燥后最终获得RF气凝胶；将RF气凝胶放进炭化炉中，制得到炭纤维增强炭气凝胶复合材料(CF/CA)。通过上述方式，本发明反应条件可控，可重复性好，得到的炭气凝胶比表面积大，孔径分布均匀，且与纤维毡垫粘结性好，不易脱落，高温隔热性能优异。
Preparation method of polyethylene glycol modified carbon aerogel/fiber composite material
The invention discloses a preparation method of a polyethylene glycol modified carbon aerogel/fiber composite material. The method comprises the following steps: stirring resorcinol (R), formaldehyde (F), polyethylene glycol (PEG), a catalyst (C) and water (W) in a water bath heating state until the components are completely dissolved to obtain a mixed solution A, and standing at normal temperature to obtain RF sol; immersing the pre-oxidized fiber into the RF sol, performing standing treatment, and taking out to obtain a mixture of the carbon precursor fiber and the RF sol; putting the mixture into hot water for aging; placing the mixture into a non-polar solvent for replacement to form organic hydrogel; and drying the hydrogel to finally obtain the RF aerogel; and putting the RF aerogel into a carbonization furnace to prepare the carbon fiber reinforced carbon aerogel composite material (CF/CA). In this way, reaction conditions are controllable, and repeatability is good. The obtained carbon aerogel is large in specific surface area, uniform in pore size distribution, good in cohesiveness with a fiber felt pad, not prone to falling off and excellent in high-temperature heat insulation performance.
本发明公开了一种聚乙二醇改性炭气凝胶/纤维复合材料的制备方法，包括以下步骤：将间苯二酚（R）、甲醛（F）、聚乙二醇（PEG）、催化剂（C）和水（W）在水浴加热状态下搅拌至完全溶解得到混合液A，放在常温下静置后得到RF溶胶；将预氧丝浸入RF溶胶，静置后取出得到炭前驱体纤维与RF溶胶的混合物；将混合物放进热水中进行老化；将混合物放进非极性溶剂中置换，形成有机水凝胶；干燥后最终获得RF气凝胶；将RF气凝胶放进炭化炉中，制得到炭纤维增强炭气凝胶复合材料(CF/CA)。通过上述方式，本发明反应条件可控，可重复性好，得到的炭气凝胶比表面积大，孔径分布均匀，且与纤维毡垫粘结性好，不易脱落，高温隔热性能优异。
Preparation method of polyethylene glycol modified carbon aerogel/fiber composite material
一种聚乙二醇改性炭气凝胶/纤维复合材料的制备方法
GUO XINGZHONG (author) / WANG JINTIAN (author) / LIANG HAO (author) / DING RONGHUA (author) / ZHANG YUN (author)
2021-10-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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