Preparation and Properties of Emulsion Coating of Polyacrylate Modified by In-Situ Nano-Hybrid Silica

Abstract:

The polyacrylate emulsion coating modified by nano-silica was prepared by In-situ method. Tetraethoxysilane (TEOS) was added as the precursor of SiO₂ in the late of the emulsion polymerization. The structure and properties of emulsion and latex film were characterized. The results showed that the nano-hybrid silica/polyacrylate emulsion coating with good performance can be prepared by In-situ method. FTIR analysis indicated that the -Si-O-Si- structure has embodied in the coating film. The particle diameter of emulsion is 378nm when nano-SiO₂ content is 6% and the dispersing index is 0.164. The mechanical loss peak temperature (T_p) of coating film with 6% nano-SiO₂ is 60.6°C which increase 6°C than pure emulsion film. The nano-hybrid emulsion coating has a good performance, such as good acid-alkali resistance and hardness.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 3221-3224
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.3221
• Online since: May 2011
• Authors: Jun Gang Gao, Hong Qiu Lv, Xue Fang Zhang
• Keywords: Emulsion Coating, Nanocomposite, Nano-Silica, Polyacrylate

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