摘要
目的评估新型纳米涂层体系在海洋大气环境、工业大气环境下的耐蚀性能。方法采用外观评级法、厚度损失分析法、电化学阻抗分析法、疲劳寿命分析法,对比分析新型纳米涂层体系与(TB06-9底漆+TS96-71面漆)涂层体系在海洋大气环境、工业大气环境下不同暴晒时间下的光泽、色差、综合评定等级、厚度损失量、疲劳寿命、阻抗特性。结果随着外场腐蚀环境作用时间的增加,两类涂层体系综合等级上升、厚度损失量增加、电化学阻抗值下降,且外部暴露环境较内外场棚下环境、工业大气环境较海洋环境对两类涂层耐蚀性影响较大,但两类涂层体系在12个月内外场腐蚀环境作用下,其疲劳寿命无明显变化,而综合分析两类涂层体系腐蚀损伤特性及腐蚀损伤规律,可见纳米涂层具有较好的耐候性,但相比(TB06-9底漆+TS96-71面漆)涂层体系,其耐蚀性能较差。结论两类涂层体系在海洋大气环境、工业大气环境下自然暴露试验12个月后,耐蚀性无明显差异,外观综合评定等级2级,对试样的光泽、色差、厚度有一定程度的影响了涂层的,但对试样的疲劳寿命的影响可忽略不计,且从两类涂层的阻抗谱可见,TB06-9底漆+TS96-71面漆涂层体系较新型纳米涂层体系具有较好的抗腐蚀性。
Evaluate the corrosion resistance of the new nanocoating system in marine atmospheric environment and industrial atmospheric environment.The appearance rating method,thickness loss analysis method,electrochemical impedance analysis method and fatigue life analysis method were used to compare and analyze the gloss,color difference,comprehensive rating grade,thickness loss,fatigue life and impedance characteristics of the new nano-coating system and the(TB06-9+TS96-71)coating system under different exposure times in marine atmospheric environment and industrial atmospheric environment.With the increase of the action time of the external corrosive environment,the comprehensive grade of the two types of coating systems increases,the thickness loss increases,and the electrochemical impedance value decreases,and the external exposure environment has a greater impact on the corrosion resistance of the two types of coatings than the inner and outer field undershed environment and the industrial atmospheric environment than the marine environment,but the fatigue life of the two types of coating systems does not change significantly under the action of the external corrosion environment within 12 months,and the comprehensive analysis of the corrosion damage characteristics and corrosion damage laws of the two types of coating systems shows that the nano-coating has better weather resistance.However,compared with the(TB06-9+TS96-71)coating system,its corrosion resistance is poor.After 12 months of natural exposure test in marine atmospheric environment and industrial atmospheric environment,there is no obvious difference in corrosion resistance,and the appearance comprehensive assessment level is grade 2,which affects the gloss,color difference and thickness of the sample to a certain extent,but the impact on the fatigue life of the specimen is negligible,and it can be seen from the impedance spectrum of the two types of coatings that(TB06-9+TS96-71)coating system has better corrosion resistance than the new nanocoating system.
作者
慕仙莲
金涛
王明振
彭苗
杨文涛
张楚哲
MU Xian-lian;JIN Tao;WANG Ming-zhen;PENG Miao;YANG Wen-tao;ZHANG Chu-zhe(China Special Vehicle Reach Institute,Jingmen 448035)
出处
《环境技术》
2024年第3期6-17,共12页
Environmental Technology
基金
工信部专项科研技术研究项目,项目编号:QK1217
国家自然基金,项目编号:51771079。
关键词
纳米涂层
外场腐蚀环境
腐蚀损伤
阻抗特性
工业大气
疲劳寿命
nano-coating
external corrosive environment
corrosion damage
impedance characteristics
industrialatmosphere
fatigue life
