The preparation and structural characterization of ambient-dried porous methylsilicone matrix doped with SiO<sub>2</sub> powder期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

The preparation and structural characterization of ambient-dried porous methylsilicone matrix doped with SiO₂ powder

Authors:	Huifang Xu Chunhua Zhang Jianwei Song Tong Lv

Affiliation:	^a School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China ^b Modern Manufacture Engineering Center, Heilongjiang Institute of Science and Technology, Harbin 150027, China

Abstract:	Porous methylsilicone monoliths doped with SiO₂ powder were prepared by dispersion of SiO₂ nanoparticles in methylsilicone oligomer solution followed by ammonia-catalyzed gelation and ambient drying. The microstructure of the porous composite monoliths was investigated by FTIR, SEM, and N₂ adsorption. The results indicated that SiO₂ evenly dispersed in methylsilicone matrix. The thermal stability of SiO₂-doped methylsilicone monoliths had been enhanced. The structure stability and hydrophobic property of the composite monoliths were maintained until 400 °C.

Keywords:	Methylsilicone Porous SiO₂
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