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- Title
VO<sub>2</sub>@PMMA 微胶囊的原位制备及其 热致变色涂层性能.
- Authors
呼啸; 李文婷; 付勍玮; 徐慧妍; 聂永; 杨帅军; 蒋绪川
- Abstract
Vanadium dioxide (VO2 ) can change infrared transmittance in response to external temperature changes, and has become the preferred material for thermochromic smart windows. The facile ball milling method is simple, easy to operate, short reaction time, less pollution, suitable for industrial production. However, there are still some problems with vanadium dioxide that may hinder large scale production and practical applications, such as poor stability and easily agglomeration. Here we report on the preparation of thermochromic coating based on VO2@polymethyl methacrylate (PMMA) microcapsule synthesized through in-situ polymerized method. Uniform VO2@PMMA microcapsules was obtained by in situ polymerization of double bonds on the surface of VO2 and methyl methacrylate (MMA) monomer. The space barrier effect of in-situ polymerized PMMA is used to prevent VO2 agglomeration. With good compactness PMMA prevent air and moisture from contacting VO2, which improve VO2 stability. VO2@PMMA films prepared by a roll coating method not only has good acid resistance and oxidation resistance, but also has excellent optical properties with the solar modulation efficiency (ΔTsol) 10.12% at 77.89% visible light transmittance (Tlum), which meets the application requirements of smart windows.
- Subjects
ELECTROCHROMIC windows; VANADIUM dioxide; DOUBLE bonds; VISIBLE spectra; METHACRYLATES; METHYL methacrylate; ELECTROCHROMIC devices
- Publication
Acta Materiae Compositae Sinica, 2023, Vol 40, Issue 8, p4587
- ISSN
1000-3851
- Publication type
Article
- DOI
10.13801/j.cnki.fhclxb.20221102.004