3HUANG W B, XIANG J Y, LV P, et al. Study on me- chanical properties aging of spray pure polyma for hydrau- lic concrete protection[ J ]. Advanced Materials Research, 2012 ( 374 - 377 ) : 1325 - 1329.
4LV P, ZHANG J, HUANG W B, et al. Hydrogen bond of polyaspartic ester polyurea coatings and the influence on aging behavior[ J ]. Materials Science Forum, 2011 (689) : 361 - 366.