具有耐燃疏水功能超轻气凝胶的制备及其吸油性
Preparation and oil absorption performance of flame-retardant and hydrophobic ultralight aerogels
蔡昊鑫 1詹颖菲 2邓红兵3
作者信息
- 1. 东华大学纺织学院,上海 201620
- 2. 武汉大学资源与环境科学学院,湖北武汉 430079
- 3. 东华大学纺织学院,上海 201620;东华大学纺织科技创新中心,上海 201620
- 折叠
摘要
为制备具有油水分离性能和阻燃性能的纤维素基气凝胶吸油剂,以纤维素纳米纤维为气凝胶基底材料,并在纤维表面覆盖具有耐燃性的累托石(REC)和疏水的硅烷涂层,制得具有耐燃疏水功能的超轻纤维素气凝胶,并测定其表观密度、阻燃性、疏水性和吸油性.研究发现:该气凝胶具有纤维结构,表观密度范围在8.10～9.95 mg/cm3之间,且具有超过130°的水接触角,显示出超轻和疏水特性.燃烧时为无焰燃烧,并且在离火后迅速止燃,具有良好的阻燃性能.此外,其最高吸油量达到(64.63±3.29)g/g,且在60 s内即可达到饱和吸油,显示出良好的吸油效果,该材料为溢油处理领域提供了一种潜在的解决方案.
Abstract
In order to prepare cellulose aerogel oil absorbents with oil-water separation performance and flame retardancy,cellulose nanofibers were utilized as the aerogel matrix material,onto which flame-retardant montmorillonite and hydrophobic silane coatings were deposited on the fiber surface,resulting in the fabrication of flame-retardant and hydrophobic cellulose aerogels.The apparent density,flame retardancy,hydrophobicity,and oil absorption performance of the obtained aerogels were determined.It is found that the aerogels possessed fibrous structure with apparent densities ran-ging from 8.10 to 9.95 mg/cm3 and water contact angles exceeding 130°,indicating ultralight and hydrophobic characteristics.During combustion,they exhibited flameless combustion behavior and rapidly ceased burning after removal from the flame,demonstrating excellent flame retardancy.Moreover,they exhibited a maximum oil absorption capacity of(64.63+3.29)g/g,reaching saturation oil absorption within 60 seconds,indicating excellent oil absorption performance.This aerogel provides a potential solution for oil spill treatment applications.
关键词
纤维素气凝胶/累托石/疏水/吸油/油/水分离Key words
cellulose aerogel/rectorite/hydrophobic/oil absorption/oil-water separation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据