Preparation and Properties Analysis of One - Component Methyl - Modified Silica Sol

ZHENG Wen - jie, LIU Feng, LI Chun - yang, LI Guo - jun

doi:10.16577/j.issn.1001-1560.2022.0136

Materials Protection >

2022 , Vol. 55 >Issue 5: 129 - 133

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0136

Preparation and Properties Analysis of One - Component Methyl - Modified Silica Sol

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Materials Science Engineering School, Dalian Jiaotong University, Dalian 116028, China

Received date: 2021-11-20

Revised date: 2021-12-14

Accepted date: 2022-01-11

Online published: 2024-01-09

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Abstract

As the silicon - oxygen bond of silica sol is too rigid, it is easy to form microcracks during the film - forming cross - linking process. To overcome this problem, modified silica sol solution was prepared by sol - gel method using silane coupling agent and silica sol as raw materials, and coated on the surface of aluminum plate. The effects of pH value of silica sol, pH regulator type and reaction time on the properties of the above - mentioned silica sol and coating were studied, and the properties of such coating were characterized through Fourier transform infrared (FT - IR) spectroscopy, thermogravimetry (TG) and contact angle analyzer. Results showed that the modified silica sol had stable properties and the coating had a smooth surface, a pencil hardness up to 6 H, a temperature resistance of 500 ℃, a contact angle of 91°, and a good thermal stability.

Key words： silica sol; sol - gel method; silane coupling agent; modification; coating; hydrophobicity

Cite this article

ZHENG Wen - jie, LIU Feng, LI Chun - yang, LI Guo - jun . Preparation and Properties Analysis of One - Component Methyl - Modified Silica Sol[J]. Materials Protection, 2022 , 55(5) : 129 -133 . DOI: 10.16577/j.issn.1001-1560.2022.0136

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