化工学报2009，Vol.60Issue(12)：3142-3147,6.
含氟硅丙烯酸酯核壳乳液及涂膜表面性能
Synthesis of core-shell polyacrylate emulsion containing fluorine and silicon and surface properties of latex films
摘要
Abstract
The core-shell polyacrylate emulsion containing fluorine and silicon in the shell was synthesized by semi-continuous seeded emulsion polymerization in the presence of reactive anionic emulsifier, using methyl methacrylate (MMA) and butyl acrylate (BA) as principal monomers, dodecafluoroheptyl methacrylate ( DFMA) and γ- ( methacryloxy) propyltrimethoxy silane ( KH-570 ) as functional monomers. The influences of the amount of fluorine and silicon monomers on emulsion polymerization process and surface hydrophobic properties of the latex films were discussed, and the surface free energies of prepared emulsion films were calculated. The fluorinated-silicated acrylate emulsion and their films were characterized by Fourier transform infrared spectrum (FT-IR), differential scanning calorimetry (DSC), thermogravimetry (TG), contact angle (CA) and X-ray photoelectron spectroscopy (XPS) analysis. The results showed that fluorine and silicon monomers had effectively copolymerized with acrylic monomers and a gradient distribution in the latex films was formed. The deioned water contact angle for film-air interface is 110. 6° and the surface free energy is as low as 15. 4 mN · M~(-1), when the amount of DFMA and KH-570 is 16% and 5 %, respectively. Both the hydrophobicity and thermal stability of the emulsion films were greatly improved.关键词
核壳乳液聚合/氟硅/低表面能/梯度涂层/疏水性Key words
core-shell emulsion polymerization/ fluorine and silicon/ low surface energy/ gradient coatings/ hydrophobicity分类
化学化工引用本文复制引用
徐蕊,肖新颜..含氟硅丙烯酸酯核壳乳液及涂膜表面性能[J].化工学报,2009,60(12):3142-3147,6.基金项目
国家自然科学基金项目(20476035,20876065). （20476035,20876065）
