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在阴/非离子表面活性剂作用下,将甲基丙烯酸十二氟庚酯(DFMA)与丙烯酸月桂酯(LA)、甲基丙烯酸羟丙酯(HPMA)及γ-甲基丙烯酰氧基丙基三甲氧基硅烷(MPMS)在水相进行乳液共聚,合成了一种硅烷改性氟代聚丙烯酸酯(DLHM)乳液。用红外光谱(IR)、核磁共振氢谱(1HNMR)和透射电镜(TEM)等对DLHM的结构及乳液的物化性能进行了表征和测定。再将DLHM乳液制备成氟碳涂层,考察温度、乳液用量对涂层表面性能的影响。结果表明,DLHM乳液具有核壳结构、平均粒径为131 nm、Zeta电位为-24.09 mV。当固化温度为150℃、乳液用量为25 g时,所得涂层性能最佳,与水的接触角达128°,表现出良好的拒水效果。
Under the action of anionic / nonionic surfactants, dodecafluoroheptyl methacrylate (DFMA) was reacted with lauryl acrylate (LA), hydroxypropyl methacrylate (HPMA) and γ-methacryloxypropyl Trimethyl trimethoxysilane (MPMS) was emulsion copolymerized in the aqueous phase to synthesize a silane modified fluoro polyacrylate (DLHM) emulsion. The structure of DLHM and its physicochemical properties were characterized and characterized by IR, 1HNMR and TEM. The DLHM emulsion was then prepared into a fluorocarbon coating to investigate the effect of temperature and the amount of emulsion on the surface properties of the coating. The results show that DLHM emulsion has a core-shell structure with an average particle size of 131 nm and a Zeta potential of -24.09 mV. When the curing temperature is 150 ℃ and the amount of emulsion is 25 g, the obtained coating has the best performance and the contact angle with water reaches 128 °, which shows a good water repellent effect.