表面技术2025，Vol.54Issue(14)：58-69,12.DOI:10.16490/j.cnki.issn.1001-3660.2025.14.006
偶氮二异丁腈与硝酸铈铵含量对电合成含铈硅丙烯酸树脂涂层的影响
Influence of Azodiisobutyronitrile and Ammonium Ceric Nitrate Content on Cerium Containing Silicone Acrylate Coatings Prepared by Electrosynthesis Method
摘要
Abstract
When acrylic resin is prepared by traditional methods,initiators are required to initiate monomer polymerization reactions.Azodiisobutyronitrile is one of the commonly used initiators.However,whether azodiisobutyronitrile can play the role of an initiator in the preparation of acrylic resin coating by electrosynthesis remains to be studied.In this study,the effects of the contents of the initiator(azodiisobutyronitrile)and the electrolyte(ammonium ceric nitrate)on the preparation of cerium containing silicone acrylate coatings by electrosynthesis are explored under the synergistic effect of thermal fields and electric fields. Q235 low-carbon steel is cut into 10 mm × 30 mm × 0.3 mm rectangular blocks to serve as the substrate.The Q235 low-carbon steel substrate is polished step by step with 500,700,1 000 and 2 000 mesh metallographic sandpaper,and then polished with a diamond polishing agent with a particle size of 2.5 μm on a metallographic polishing machine.The polished substrate is placed in an acetone solution for ultrasonic cleaning for 15 minutes,followed by rinsing with ethanol and deionized water.It is then blown dry with nitrogen for later use.The electrolytic cell is placed in a heat-collecting constant-temperature heating magnetic stirrer for the experiment.The acrylic resin coating is prepared by galvanostatic method with a current density of-0.4 mA/cm2.The working electrode is Q235 low carbon steel(with a working area of 1.0 cm2).The reference electrode is Ag|Ag+electrode(0.01M silver nitrate,with CH3CN as the solvent).The counter electrode is a platinum sheet electrode(30 mm× 30 mm× 0.2 mm).An electrochemical workstation(CHI-440E)is used as the power supply for coating preparation.An atomic force microscope(AFM),a scanning electron microscope(SEM),an energy dispersive spectrometer(EDS)and an X-ray photoelectron spectrometer(XPS)are used to analyze the surface morphology and chemical composition of the samples.The hydrophobicity of the coatings is characterized by water contact angle(WCA).The electrodeposition behavior and corrosion resistance of the coating materials are analyzed by electrochemical test.According to the ASTMD3359-09 standard,the adhesion of the coating is graded with a grid knife. The results show that when the mass fraction of azodiisobutyronitrile in the electrolyte is increased from 0wt.％to 1.2wt.％,the protective efficiency of the coating decreases from 86.4％to 68.4％,and the water contact angle of the coating decreases from 98.5° to 65.0°.When the content of ammonium ceric nitrate in the electrolyte is increased from 2 g/L to 6 g/L,the protective efficiency of the coating increases from 84.9％to 96.9％,and the water contact angle of the coating increases from 84.9° to 109.9°.The addition of azodiisobutyronitrile to the electrolyte did not improve the hydrophobic properties and corrosion resistance of the coating.Furthermore,the coating could not be successfully prepared when ammonium ceric nitrate in the electrolyte is replaced with other conductive salts such as sodium nitrate,indicating that cerium salt not only serves as a conductive agent in the electrolyte but also acts as an initiator.When the content of ammonium ceric nitrate in the electrolyte is 6 g/L,the coating is the densest and most uniform,effectively improving the protective performance of the coating.关键词
电化学合成/丙烯酸树脂/偶氮二异丁腈/硝酸铈铵/防腐性能Key words
electrosynthesis method/acrylic resin/azodiisobutyronitrile/ammonium ceric nitrate/anticorrosive performance分类
通用工业技术引用本文复制引用
韩昊宇,刘春阳,杨雨萌,朱本峰,卫国英..偶氮二异丁腈与硝酸铈铵含量对电合成含铈硅丙烯酸树脂涂层的影响[J].表面技术,2025,54(14):58-69,12.基金项目
国家自然科学基金(52001300) （52001300）
杭州市重点科研计划项目(2023SZD0052)National Natural Science Foundation of China(52001300) （2023SZD0052）
Hangzhou Key Scientific Research Program(2023SZD0052) （2023SZD0052）
