不同聚合物体系在潮湿基面的粘结性研究
发布时间：2018-07-17 01:45
【摘要】：针对海洋环境潮差区以及全浸区混凝土基面含水量高,聚合物基防护材料附着力低的技术难题,本研究采用4种用于潮湿混凝土基面的聚合物基封闭底漆,考察施工时间、基层处理工艺对底漆与混凝土粘结性能的影响规律,以及配套涂层防护体系在模拟海洋浪溅区以及全浸区的附着性能。结果表明:4种底漆A、B、C、D与干燥环境的混凝土的粘结强度分别为3.83、3.96、3.57、4.41 MPa,水分使4种底漆的附着性能不同程度的降低;随着混凝土涂装面粗糙度的增加及晾置时间的延长,4种底漆附着力均增大;作为潮湿混凝土基面封闭体系,聚氨酯基预聚物A及水性双组份聚氨酯底漆C性能更优,饱水基面粘结强度分别为3.57 MPa和3.82 MPa。
[Abstract]:In view of the technical problems of high water content and low adhesion of polymer based protective materials in marine environment and full immersion zone, four kinds of polymer base sealing primer used for wet concrete base surface were used to investigate the construction time. The effect of the base treatment process on the adhesion between the primer and the concrete, and the adhesion of the supporting coating protection system in the simulated sea splash zone and the whole immersion zone. The results show that the bond strength of AnBU / C / D and concrete in dry environment is 3.83 ~ 3.96 ~ 3.57 ~ 4.41 MPa, respectively, and the adhesion property of four primer is decreased to different extent by moisture. With the increase of surface roughness of concrete and the extension of curing time, the adhesion of four primer is increased, and as a sealing system of wet concrete, polyurethane prepolymer A and waterborne two-component polyurethane primer C have better properties. The bonding strength of saturated base plane is 3.57 MPA and 3.82 MPA respectively.
【作者单位】： 江苏苏博特新材料股份有限公司;高性能土木工程国家重点实验室;南京博特新材料股份有限公司;
【基金】：江苏省科技支撑计划项目(BE2014019)
【分类号】：U655.56
，
本文编号：2128476
[Abstract]:In view of the technical problems of high water content and low adhesion of polymer based protective materials in marine environment and full immersion zone, four kinds of polymer base sealing primer used for wet concrete base surface were used to investigate the construction time. The effect of the base treatment process on the adhesion between the primer and the concrete, and the adhesion of the supporting coating protection system in the simulated sea splash zone and the whole immersion zone. The results show that the bond strength of AnBU / C / D and concrete in dry environment is 3.83 ~ 3.96 ~ 3.57 ~ 4.41 MPa, respectively, and the adhesion property of four primer is decreased to different extent by moisture. With the increase of surface roughness of concrete and the extension of curing time, the adhesion of four primer is increased, and as a sealing system of wet concrete, polyurethane prepolymer A and waterborne two-component polyurethane primer C have better properties. The bonding strength of saturated base plane is 3.57 MPA and 3.82 MPA respectively.
【作者单位】： 江苏苏博特新材料股份有限公司;高性能土木工程国家重点实验室;南京博特新材料股份有限公司;
【基金】：江苏省科技支撑计划项目(BE2014019)
【分类号】：U655.56
，
本文编号：2128476
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