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以乙烯基三乙氧基硅烷(VTES)、甲基丙烯酸十二氟庚酯(DFMA)、丙烯酸正丁酯(BA)作为壳单体,以苯乙烯(St)、甲基丙烯酸甲酯(MMA)作为核单体,合成了氟硅改性核壳结构纳米丙烯酸乳液。研究了核壳结构及VTES、DF-MA功能单体对涂膜的性能影响。采用红外光谱、激光光散射(DLS)和透射电镜(TEM)对乳液的化学结构、粒径分布和微观形貌进行表征;通过接触角测量对涂膜表面亲疏水性能进行表征。结果表明:核壳结构的纳米乳液粒径分布窄且均匀;VTES、DFMA的加入对涂膜的附着力、耐水性、耐紫外光、耐污性有提高,当VTES、DFMA加入量分别为单体总量的6%、8%时,所制得的纳米乳液的稳定性好,涂膜的综合性能好,其接触角高达110.2°,耐水性突出。
(VES) was synthesized by using vinyltriethoxysilane (VTES), dodecafluoroheptylmethacrylate (DFMA) and n-butyl acrylate (BA) as shell monomers, styrene (St), methylmethacrylate ) As a core monomer, a fluorosilicone modified core-shell nano-acrylic emulsion was synthesized. The effects of core-shell structure, VTES and DF-MA functional monomer on the performance of the coating were studied. The chemical structure, particle size distribution and morphology of the emulsion were characterized by infrared spectroscopy, laser light scattering (DLS) and transmission electron microscopy (TEM). The hydrophilicity and hydrophobicity of the coating were characterized by contact angle measurement. The results show that the particle size distribution of the core-shell nanoshells is narrow and uniform. The addition of VTES and DFMA improves the adhesion, water resistance, UV resistance and stain resistance of the coating. When the addition amounts of VTES and DFMA are single When the volume is 6% and 8%, the prepared nanoemulsion has good stability, good overall performance of the coating, and the contact angle is as high as 110.2 °, and the water resistance is outstanding.