Next Article in Journal
High Performance Planar Structure Perovskite Solar Cells Using a Solvent Dripping Treatment on Hole Transporting Layer
Next Article in Special Issue
Effect of Microstructure on Layered Double Hydroxides Film Growth on Mg-2Zn-xMn Alloy
Previous Article in Journal
Starch/Poly(glycerol-adipate) Nanocomposites: A Novel Oral Drug Delivery Device
Open AccessArticle

Influence of Epoxy Content on the Properties and Marine Bacterial Adhesion of Epoxy Modified Silicone Coatings

Department of Materials Science and Engineering Dalian Maritime University, Dalian 116026, China
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(2), 126; https://doi.org/10.3390/coatings10020126
Received: 2 January 2020 / Revised: 20 January 2020 / Accepted: 28 January 2020 / Published: 2 February 2020
(This article belongs to the Special Issue Coatings against Corrosion, Microbial Adhesion, and Biofouling)
This study addresses the issue of enhancing the mechanical properties and adhesion of silicone antifouling coatings. In this paper, γ-aminopropyltriethoxysilane was used to pretreat bisphenol A epoxy resin to obtain epoxy-silicone prepolymer, which was then mixed with hydroxyl-terminated polydimethylsiloxane to obtain epoxy-modified silicone. It was cured with polyamide curing agent and dibutyltin dilaurate catalyst to form film, and a three-component epoxy-modified silicone coating was prepared. Fourier transform infrared (FTIR) spectroscopy was used to characterize its chemical structure. The effects of epoxy content on the surface properties, mechanical properties and antibacterial properties of the coatings were characterized by confocal laser scanning microscope (CLSM), contact angle measurements, tensile test and bacterial adhesion test. The results show that adding epoxy makes the adhesion of the coating at level 1 and the surface free energy of the coating was between 15–21 mJ/m2. When its content is less than 22.1 wt %, the coating is in a ductile material state. Once it is higher than 22.1 wt %, the coating was in a brittle material state. As the content increases, material’s hardness and fracture strength increases; elastic modulus decreases first and then increases, but bacteria removal rate decreases. The modification of the epoxy to silicone can effectively improve the adhesion and mechanical properties of the coating, while maintaining the characteristics of the low surface of the coating. It plays a positive role in improving the performance of silicone antifouling coatings. View Full-Text
Keywords: γ-aminopropyl triethoxysilane; hydroxyl terminated polydimethylsiloxane; epoxy; coating; bacterial removal γ-aminopropyl triethoxysilane; hydroxyl terminated polydimethylsiloxane; epoxy; coating; bacterial removal
Show Figures

Figure 1

MDPI and ACS Style

Zhao, R.; Zhang, Z.; Qi, Y. Influence of Epoxy Content on the Properties and Marine Bacterial Adhesion of Epoxy Modified Silicone Coatings. Coatings 2020, 10, 126. https://doi.org/10.3390/coatings10020126

AMA Style

Zhao R, Zhang Z, Qi Y. Influence of Epoxy Content on the Properties and Marine Bacterial Adhesion of Epoxy Modified Silicone Coatings. Coatings. 2020; 10(2):126. https://doi.org/10.3390/coatings10020126

Chicago/Turabian Style

Zhao, Ruikang; Zhang, Zhanping; Qi, Yuhong. 2020. "Influence of Epoxy Content on the Properties and Marine Bacterial Adhesion of Epoxy Modified Silicone Coatings" Coatings 10, no. 2: 126. https://doi.org/10.3390/coatings10020126

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop