Showing papers by "Xianting Zeng published in 2019"
TL;DR: In this paper, an environment-friendly waterborne hydrophobic bioepoxy coating (WHBC) was proposed by introducing dual-scale SiO2 nanoparticles and (3-glycidyloxypropyl) trimethoxysilane into an a...
Abstract: This study reports an environment-friendly waterborne hydrophobic bioepoxy coating (WHBC), prepared by introducing dual-scale SiO2 nanoparticles and (3-glycidyloxypropyl) trimethoxysilane into an a...
74 citations
TL;DR: In this paper, an environmentally friendly hydrophobic coating based on bio-epoxy using water as the only solvent during the preparation was reported, which exhibited high hydrophobicity with a water contact angle (CA) of 134.3°.
Abstract: Corrosion of aluminum and its alloys causes serious problems to our daily life. As a common method for corrosion protection, epoxy resin has been widely used as the coating material due to its easy processability and excellent properties. However, its high water absorption and brittleness, as well as the usage of volatile organic solvents during coating preparation, has limited its applications in some areas. In this study, we reported an environmentally friendly hydrophobic coating based on bio-epoxy using water as the only solvent during the preparation. The coating was fabricated by introducing superhydrophobic SiO2 nanoparticles, a hydrophobic curing agent, and hexadecyltrimethoxysilane into an isosorbide-based epoxy resin via a one-step spin coating process. The coating exhibits high hydrophobicity with a water contact angle (CA) of 134 ± 3°. This as-prepared coating is found to have good mechanical robustness against sands erosion: it maintained a high water repellence with the CA of 146 ± 2° after sands erosion for 30 s. In addition, the as-obtained coating shows a one-order of magnitude reduction in the corrosion current density (Jcorr), a positive shift of the corrosion potential (Ecorr) from −1.008 V to −0.747 V, and an inhibition efficiency of 92%.
59 citations
TL;DR: In this paper, an environmentally friendly hydrophobic coating was developed based on a bio-based epoxy with addition of nanoparticles, a silane coupling agent (3-glycidyloxypropyl) trimethoxysilane (GLYMO), and a hydrophilic curing agent.
42 citations
TL;DR: In this paper, the authors discuss the negative impact of epoxy resins on their usages in the field of adhesives, protective and decorative coatings, and propose a solution to this problem.
Abstract: Epoxy resins are widely commercialized in the market because of their important applications such as adhesives, protective and decorative coatings. However, their usages have brought in negative im...
35 citations
TL;DR: In this article, the authors reported the preparation of hydrophobic coatings based on isosorbide, a derivative of polysaccharides, using F8815, a hydrophilic curing agent.
Abstract: Over the past several decades, producing materials from fossil-based sources has become a serious problem because such action continues to contribute to global warming and contamination of the ecosystem. Thus, it is highly desirable to address this issue through producing functional materials via green chemistry such as the use of renewable compounds. In this paper, the preparation of hydrophobic coatings based on isosorbide, a derivative of polysaccharides, is reported. The inherently hydrophilic thermoset derived from isosorbide was made hydrophobic through the use of the hydrophobic curing agent F8815. The influence of the F8815 concentration on the decomposition temperature, glass transition temperature and storage modulus of the biobased samples was explored using TGA, DSC and DMA, respectively. The results showed that, despite of its poor mechanical and thermal properties, incorporation of F8815 served to improve the thermal and mechanical properties of the isosorbide-based polymers. Deconvolution analysis of FTIR spectra and SEM images provided insightful information on the participation of F8815 in the polymer network.
10 citations