Hydrogen Bond of Polyaspartic Ester Polyurea Coatings and its Influence on Aging Behavior
Two types of polyurea coatings based on polyaspartic esters (PAE) (PAE-F1 and PAE-F2) were exposed in salt fog environments and outdoor for different time periods. The aging behaviors of two types of coatings were evaluated by using electronic tensile testing machine, glossmeter and Fourier transform infrared spectroscopy (FTIR). The results showed that the salt fog had a significant effect on the gloss loss, hydrogen-bonded urea carbonyl in PAE-F1 and PAE-F2 were 77.1％ and 74.9％ respectively by the results obtained from FTIR analysis. The index of gloss loss, strength change rate and elongation at break change rate of PAE-F1 and PAE-F2 coatings kept well exposed in outdoor and salt fog environment after 350 days. All test results indicated that PAE coating has excellent aging resistance; PAE-F1 with higher degree of hydrogen bond was more orderly structural and better aging resistant than PAE-F2 coating.
polyurea coatings polyaspartic ester accelerated aging test outdoor insolation salt fog exposure
LU Ping ZHANG Jing HUANG Weibo LIU Xudong
Research Institute of Functional Materials, Qingdao Technological University,Qingdao, CHINA, 266033 Research Institute of Functional Materials, Qingdao Technological University, Qingdao, CHINA, 266033
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
361-366
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）