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Self-Crosslinkable Acrylate Copolymer with Core–Shell Structure and its Humidity Controlling Function in Waterborne Coatings

  • Research Article - Special Issue - Chemistry
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Abstract

A novel waterborne ambient self-crosslinkable emulsifier-free core–shell polyacrylate emulsion (EC-PAE) has been successfully prepared by emulsifier-free seeded emulsion polymerization. Some key factors in polymerization were investigated systematically. The core–shell particles morphology, distribution and compositions have been measured by transmission electron microscopy, dynamic light scattering and FT-IR spectra, respectively. During preparation of film or coatings, the polyacrylate emulsion (EC-PAE) could cure fast at ambient temperatures due to the cross-linking reaction between keto-carbonyl in diacetone acrylamide and adipic acid dihydrazide (ADH). Furthermore, EC-PAE has been applied to a new kind of two-component air-dried waterborne coatings with addition of ADH, which afforded the ambient-temperature curable waterborne coatings (EC-PAE-C). The basic properties of the novel waterborne coatings meet the national standard of architectural indoor coatings, especially in hardness, gloss, viscosity and water resistance. It is also found that the coatings exhibit a large capacity for water absorption (260 %), increasing indoor humidity and dehumidification in dry or moist environments.

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Authors and Affiliations

  1. Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Institute of Polymer, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China

    Zhan-Min Wu, Wen-Zhong Zhai, Yu-Feng He, Peng-Fei Song & Rong-Min Wang

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  1. Zhan-Min Wu
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  2. Wen-Zhong Zhai
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  3. Yu-Feng He
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  4. Peng-Fei Song
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Correspondence to Rong-Min Wang.

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Wu, ZM., Zhai, WZ., He, YF. et al. Self-Crosslinkable Acrylate Copolymer with Core–Shell Structure and its Humidity Controlling Function in Waterborne Coatings. Arab J Sci Eng 39, 6693–6701 (2014). https://doi.org/10.1007/s13369-014-1190-8

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  • DOI: https://doi.org/10.1007/s13369-014-1190-8

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