Ultra-heat resistant, adhesive and anticorrosive properties of poly (dimethylsiloxane) resin/furan coating

作者：Wang, Zhi^*; Zhang, Lei; Hu, Weihong; Zhang, Xin; Zhao, Guizhe^*

来源：Progress in Organic Coatings, 2018, 125: 500-506.

DOI：10.1016/j.porgcoat.2018.10.005

• Furan resin
• Poly(dimethylsiloxane)
• Anticorrosion properties
• Wettability
• Meso-Porous SiO2

A coating with ultra-heat resistant, adhesive and anticorrosive properties made of poly(dimethylsiloxane) (PDMS), furan and meso-porous SiO2 (SBA-15) was studied. Adding SBA-15 into PDMS/furan provided excellent adhesive properties while hardly changing the thermal stability. PDMS/furan/SBA-15 had first level adhesive property which was superior to that of pure PDMS/furan coating (third level). The surface changed from hydrophilic to hydrophobic and then to superhydrophobic with increasing content of SBA-15, due to the micro-nano structures provided by SBA-15. The corrosion resistances of PDMS/furan/SBA-15 coating in acidic and salty environments were both augmented compared with those of PDMS/furan coating. The impedance of coating in 3.5% NaCl solution increased with rising content of SBA-15, which was 1.62 x 10(6) Omega cm(2) for PDMS/furan and 1.27 x 10(6) Omega cm(2) for PDMS/furan/SBA-15 (14%). This was primarily caused by the barrier structures exposed by SBA-15, also being the main mechanism for the improved anticorrosive properties of PDMS/furan/SBA-15. After washing with water, the coating wettability was recovered to the original one after immersion in NaCl solution. In conclusion, this coating may be applicable to the marine field.

• 出版日期2018-12
• 单位中北大学