A silicone with hydrogen bonds and double bonds in the side chain was synthesized by blending method, and its structure was determined using Fourier transform infrared (FTIR) and nuclear magnetic resonance (¹H NMR). Then, the silicone was used to modify Al₂O₃, and the chemical composition and thermal stability of Al₂O₃ were verified by FTIR, X-ray diffraction (XRD), thermal gravimetric analysis (TG) and water contact angle (WCA). Polyacrylate was modified by silicone, modified Al₂O₃, and silicone and modified Al₂O₃, respectively, the obtained emulsion was called silicone/polyacrylate composite emulsion, Al₂O₃/polyacrylate composite emulsion and Al₂O₃–silicone/polyacrylate composite emulsion. To verify that both silicone and Al₂O₃ could improve the thermal stability and hydrophobicity of the composites to a certain extent, the composite emulsion and composite emulsion film were tested and characterized. FTIR confirmed the successful introduction of silicone and modified Al₂O₃ into the polyacrylate emulsion. Spherical particles with a diameter of about 68 nm were observed from particle size analysis and transmission electron microscopy (TEM). Scanning electron microscope (SEM) showed the distribution state of the modified monomer in the polymer matrix. TG and WCA analysis showed that the introduction of silicone and modified Al₂O₃ could improve the thermal stability and hydrophobicity of the polyacrylate film, and the contact angle of the silicone–Al₂O₃ composite film could reach 92°. Finally, the modified Al₂O₃ and silicone/polyacrylate were mixed and sprayed on the substrate to prepare a superhydrophobic coating, and the coating was characterized by atomic force microscope (AFM), SEM and WCA. The coating had excellent temperature resistance and self-cleaning properties, and the superhydrophobic filter cloth prepared by spraying the mixed emulsion on the filter cloth had excellent oil–water separation effect.

采用共混法合成了侧链具有氢键和双键的有机硅，并利用傅里叶变换红外（FTIR）和核磁共振（¹ H NMR）对其结构进行了测定。然后，利用有机硅对Al ₂ O ₃进行改性，通过FTIR、X射线衍射（XRD）、热重分析（TG）和水接触角（WCA）验证了Al ₂ O ₃的化学成分和热稳定性。）。聚丙烯酸酯分别经有机硅、改性Al ₂ O ₃、有机硅和改性Al ₂ O ₃改性，所得乳液称为有机硅/聚丙烯酸酯复合乳液，Al₂ O ₃ /聚丙烯酸酯复合乳液和Al ₂ O _{3 -}有机硅/聚丙烯酸酯复合乳液。为了验证有机硅和Al ₂ O ₃均能在一定程度上提高复合材料的热稳定性和疏水性，对复合乳液和复合乳液膜进行了测试和表征。FTIR 确认成功引入有机硅和改性 Al ₂ O ₃进入聚丙烯酸酯乳液。通过粒度分析和透射电子显微镜（TEM）观察到直径约为 68 nm 的球形颗粒。扫描电子显微镜（SEM）显示了改性单体在聚合物基体中的分布状态。TG和WCA分析表明，有机硅和改性Al ₂ O ₃的引入可以提高聚丙烯酸酯薄膜的热稳定性和疏水性，有机硅-Al ₂ O ₃复合薄膜的接触角可达92°。最后，改性 Al ₂ O ₃将有机硅/聚丙烯酸酯混合并喷涂在基材上制备超疏水涂层，并通过原子力显微镜（AFM）、SEM和WCA对涂层进行表征。该涂层具有优异的耐温性和自洁性，将混合乳液喷涂在滤布上制备的超疏水滤布具有优异的油水分离效果。