Study on the Superhydrophobicity and Wear Resistance of Modified SiO2/Epoxy Resin/PDMS Coatings

• Published in: Cai liao bao hu Vol. 58; no. 8; pp. 116 - 127
• Main Author: GU Xueyang, HU Ya, LIU Ying, LI Jingwang, YUAN Zefeng, SUN Jiageng, WANG Yu’an, RUAN Shicheng, TAO Zhijie, WU Lin
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Materials Protection 01.08.2025
• Subjects: modified sio2；superhydrophobic coating；pdms；wear resistance；epoxy resin
• ISSN: 1001-1560
• DOI: 10.16577/j.issn.1001-1560.2025.0139

In order to improve the hydrophobicity and wear resistance of polydimethylsiloxane (PDMS) coatings，KH-570 was used to modify amorphous SiO2 particles，which were used as fillers in the composite coatings to enhance the hydrophobicity of the coating.Epoxy resin E-51 was used to improve the wear resistance of the coating.The effects of filler content and preparation process on the hydrophobicity and wear resistance of the composite coatings were investigated.Results showed that KH-570 successfully modified the SiO2 particles，and the addition of KH-570-modified SiO2 particles enabled the PDMS coating to achieve superhydrophobicity with self-cleaning properties.It was determined that a filler content of 5%(mass fraction) KH-570-modified SiO2 particles，a mixing and stirring time of 20 min，and a curing time of 2 h resulted in a wear-resistant superhydrophobic coating with a static water contact angle of 154° and a water rolling angle of 2°.The addition of 0.4 g of E-51 improved the adhesion of the composite coating