桐油/羊毛脂微胶囊涂层的防锈性能和附着力研究  

Study of Anti-Corrosion Performance and Adhesion of Tung Oil/Lanolin Microcapsule Coating

作　　者：安金亮 万萌 汤胜 霍晓俊 AN Jin-liang;WAN Meng;TANG Sheng;HUO Xiao-jun(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;School of Life Science and Food Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北工程大学生命科学与食品工程学院,河北邯郸056038

出　　处：《材料保护》2023年第5期139-147,共9页Materials Protection

基　　金：邯郸市科学技术研究与发展计划项目(21212051056);河北省高等学校科学技术研究项目(QN2022155);河北工程大学博士专项基金项目(SJ2101003140)资助。

摘　　要：为解决建筑防腐涂层因外界环境、物理损伤等因素,导致涂层内部密度不均形成微孔及裂纹缝隙、涂层发生脱落剥离、防护性能失效等问题,以三聚氰胺-脲醛树脂为壁材,桐油和羊毛脂为芯材,选用原位聚合法制得自修复微胶囊,系统优化乳化时间、乳化转速、芯壁比对微胶囊性能的影响,得出合成自修复微胶囊的最佳工艺。将微胶囊分散到丙烯酸、聚氨酯、环氧树脂和环氧富锌4种不同涂料体系,制得复合涂层并测试其附着力和耐腐蚀性能。结果表明:乳化时间为10 min,乳化搅拌速度为1800 r/min,芯壁比为1∶1时,微胶囊平均粒径为70μm,分布均匀、形貌规则、壁材致密。当复合涂层中微胶囊掺量为10%(质量分数)时,丙烯酸基复合涂层防锈性能优异,附着力良好。In order to solve the problems of uneven internal density,formation of microspores and crack gaps,detachment and peeling of coatings,and failure of protective performance caused by external environment,physical damage,and other factors in building anti-corrosion coatings,the self-healing microcapsules were prepared by in-situ polymerization method,using melamine-urea-formaldehyde resin as shell material,tung oil,and lanolin as core materials.The effects of emulsification time,emulsification speed,and core/shell ratio on the perform-ance of microcapsules were systematically optimized to obtain the best synthesis process for self-healing microcapsules.Then,the composite coatings were prepared by dispersing microcapsules into four different coating systems of acrylic acid,polyurethane,epoxy resin,and zinc-rich epoxy coatings.Adhesion and corrosion resistance of the composite coatings were tested.Results showed that when emulsification time was 10 min,emulsification stirring speed was 1800 r/min,and core/shell ratio was 1∶1,the average particle size of the obtained microcapsules was 70μm with uniform distribution,regular morphology,and dense wall.The acrylic acid-based composite coating had the excellent anti-corrosion performance and good adhesion when the dosage of microcapsules in the composite coating was 10%(mass fraction).

关 键 词：微胶囊 自修复涂层 防锈性能 附着力 

分 类 号：TG174.44[金属学及工艺—金属表面处理]