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Citation: ZHOU Tingting, YANG Jianjun, WU Qingyun, WU Mingyuan, ZHANG Jianan. Preparation of Silicone Modified Sulfonated Polyurethane/acrylic Composite Emulsion[J]. Chinese Journal of Applied Chemistry, ;2013, 30(2): 143-147. doi: DOI:10.3724/SP.J.1095.2013.20105 shu

Preparation of Silicone Modified Sulfonated Polyurethane/acrylic Composite Emulsion

1.
Key Laboratory of Environment-friendly Polymer Materials of Anhui Province, College of Chemistry and Chemical Engineering of Anhui University, Hefei 230039, China

Corresponding author: YANG Jianjun,
Received Date: 21 March 2012
Available Online: 4 July 2012
Fund Project: 国家自然科学基金(51173001,21044006) (51173001,21044006)安徽省自然科学基金(11040606M59)资助项目 (11040606M59)

A prepolymer was prepared by reacting the obtained sulfonated polyester polyol with isophorone diisocyanate(IPDI) and trimethylolpropane(TMP).The seed emulsion containing viny and silicone was prepared by end-capping with bifunctional monomer β-hydroxyethyl methacrylate(HEMA) and modification by silane coupling agent γ-aminopropyl triethoxysilane(KH550).The silicone modified sulfonated polyurethane/acrylic composite emulsion was obtained by mixing methyl methacrylate(MMA) and butyl acrylate(BA) monomers.The silicone modified sulfonated polyurethane/acrylic composite emulsion was characterized by infrared spectroscopy.The core-shell structure of the composite emulsion was confirmed by the transmission electron microscopy.Thermogravimetric analysis showed that an increase of 20℃ of the largest thermal mass loss temperature could be observed for the organic silicon and acrylic modified films.Meanwhile,the crystallinity was decreased as revealed by X-ray diffraction result,which could help to improve the toughness of the film.In addition,when the organic silicon content is 1.9%,the tensile strength of the film is up to 25.03 MPa,its elongation at break is 328%,and has the lowest water absorption.
- polyester polyol,
- waterborne polyurethane,
- acrylates,
- silicone
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