Preparation and performance of modified SiO2 gel coating filter material

被引：0

作者：

Li Q. ^{[1
]}

Qian F. ^{[1
]}

Xue Z. ^{[1
]}

Dong W. ^{[1
]}

Han Y. ^{[1
]}

Lu J. ^{[1
]}

机构：

[1] School of Architecture and Civil Engineering, Anhui University of Technology, Ma'anshan

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2021年 / 38卷 / 08期

关键词：

Filter performance; High wet viscosity particles; Polyethylene terephthalate (PET) fiber filter; Sol-gel method; Superhydrophobic property;

D O I：

10.13801/j.cnki.fhclxb.20201030.005

中图分类号：

学科分类号：

摘要：

In this paper, from the perspective of surface modification of filter material, how to improve its stability in high humidity environment has been studied. Using polyethylene terephthalate (PET) filter material as the substrate, ethyl orthosilicate (TEOS) as the precursor, and methyltriethoxysilane (MTES) as the low surface energy substance, the sol-gel method was used to generate in-situ on the surface of the filter material SiO2 nanoparticles to prepare modified SiO2 gel-coated filter material. Then, FESEM-EDS, FTIR and a contact angle measuring instrument were used to analyze the changes in the surface chemical composition, wettability and surface morphology of the PET filter material. The results show that SiO2 nanoparticles are formed on the surface after finishing, and the surface is covered with hydrophobic methyl groups after MTES modification treatment. Thus, its hydrophobic property is significantly improved, and its surface water contact angle reaches 154.11°. At the same time, the SiO2 particles are evenly distributed on the surface, and the gel polymer is only deposited at the intersection of the fibers, which ensures air permeability, and the filtration efficiency increases from 97.0595% to 99.2028%, and the filtration quality factor increases by 30%, from 0.02124 to 0.02761. © 2021, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：2489 / 2496

页数：7

共 27 条

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