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以甲基丙烯酸十二氟庚酯、丙烯酸-2-乙基己酯、甲基丙烯酸羟乙酯、苯乙烯为聚合单体,偶氮二异丁腈为引发剂,通过溶液聚合制得了含氟羟基聚丙烯酸酯共聚物(PGHES),以含异氰酸酯的不饱和单体HIp与共聚物PGHES侧链上的羟基反应制得光敏性含氟聚丙烯酸酯(U-PGHES)。用傅立叶红外光谱(FT-IR)、核磁共振氢谱(1 H-NMR)表征聚合物结构;用凝胶渗透色谱(GPC)及差示扫描量热仪(DSC)表征聚合物分子量及玻璃化转变温度;用光学接触角测量仪测量了聚合物固化膜接触角并计算得到表面能。结果表明,固化膜表面能随U-PGHES中含氟量的增加而降低,当含氟量达到9%时,表面能降低趋缓。
With fluorine dodecafluoro heptyl methacrylate, 2-ethylhexyl acrylate, hydroxyethyl methacrylate, styrene as the polymerization monomer, azobisisobutyronitrile as initiator, prepared by solution polymerization of fluorine Hydroxyl polyacrylate copolymer (PGHES) was prepared by reacting the isocyanate-containing unsaturated monomer HIp with hydroxyl groups on the PGHES side chain of the copolymer to obtain photosensitive fluorinated polyacrylate (U-PGHES). The polymer structure was characterized by Fourier transform infrared spectroscopy (FT-IR) and 1H nuclear magnetic resonance (1H-NMR). The molecular weight and vitrification of polymer were characterized by gel permeation chromatography (GPC) and differential scanning calorimeter The temperature was measured. The contact angle of polymer cured film was measured by optical contact angle meter and the surface energy was calculated. The results show that the surface energy of the cured film decreases with the increase of fluorine content in U-PGHES. When the fluorine content reaches 9%, the surface energy decreases slowly.