综述了聚脲涂层的抗氯离子渗透性、抗冻融性、耐海水冲蚀磨损性及耐海洋环境老化性的研究成果。介绍了聚脲涂层在海洋混凝土工程上的最新应用。研究结果表明,聚脲涂层能有效提高海洋混凝土结构的耐久性。

The research achievements of the polyurea coating’s resistance to chloride ion penetration,resistance to freezing and thawing,seawater erosion wear resistance and aging performance in the marine environment were summarized. The latest application of polyurea coating in the marine concrete engineering was introduced. The research results showed that the polyurea coating could effectively improve the durability of marine concrete structures.

由不同二元醇与二异氰酸酯合成不同NCO含量的半预聚体（A组分）与端氨基聚醚、胺扩链剂等原料组成的R组分经喷涂设备喷涂成型聚脲弹性体。讨论了在不同摩擦工况下NCO含量、异氰酸酯指数、预聚物类型、耐磨助剂等对聚脲弹性体耐磨性能的影响。结果表明，不同NCO含量在不同摩擦工况下对聚脲耐磨性能的影响不同，干摩擦工况下NCO含量越高，耐磨性能越佳，湿摩擦工况下则是NCO质量分数为15％耐磨性最佳，异氰酸酯指数对聚脲耐磨性能的影响较小，使用聚四氢呋喃二元醇、TDI预聚物和耐磨助剂，可提高不同摩擦工况下聚脲的耐磨性能。

The spraying polyurea elastomer system was synthetized by A component and R component. The A component was a kind of quasi?prepolymer with different NCO content, synthesized by polyether diol and isocya?nate. The R component was composed of amino terminated polyether, amine extender and other additives. The in?fluence on abrasion performance under different wear conditions was discussed, such as different NCO content, iso?cyanate index, type of prepolymer and different wearable additives. The result was that different NCO content had different wear influence under different wear conditions. With the NCO content of the prepolymer increase, the bet?ter abrasion resistance the polyurea had under dry wear condition. The abrasion performance was the best when NCO content was 15% under wet wear condition. The isocyanate index had a few effects on the abrasion perform?ance. The application of polytetrahydrofuran diol, TDI perpolymer and wearable additives could improve the abra?sion

以均苯四甲酸酐（PMDA）、4,4’-二氨基二苯醚（ODA）和四甲基-双（γ-氨丙基）二硅氧烷（APDS）合成了氨端基聚酰胺酸预聚体，然后分别用甲苯二异氰酸酯（TDI）和二苯甲烷二异氰酸酯（MDI）扩链制得聚脲酰胺酸，经亚胺化制备了两种聚脲酰亚胺POAU（T）和POAU（M）。通过TGA和IR研究聚脲酰亚胺的热稳定性，测试聚脲酰亚胺在频率为0.1-105Hz和温度50-300℃的介电常数（ε）和介质损耗（tanδ）。结果表明：聚脲酰亚胺分子链段中存在两个转变温度Tg，脲基链段的Tg为244℃（POAU（T））及243℃（POAU（M）），酰亚胺环链段的Tg温度为329℃（POAU（T））及331℃（POAU（M））。预倾角测定（TBA）结果表明该聚脲酰亚胺是一种良好的液晶分子定向膜材料。

Polyimide acid prepolymers were synthesized from pyromellitic dianhydride(PMDA), 4,4′-diami-no diphenyl ether(ODA), and tetramethyl-bis-(γ-aminopropyl) disiloxane(APDS), and the polyureas-imide acids were prepared by chain extension reaction with toluene diisocyanate(TDI) and methylene diphenyl diisocyanate(MDI) respectively, then two kinds of polyureas-imide POAU(T) and POAU(M) were prepared by imidization. The thermal stability of the polyureas-imides was studied by IR and TGA, and the dielec-tric constant and dielectric dissipation factor at 0.1~105 Hz and 50~300℃ were tested. The results show that the polyureas-imide molecule exist two glass transition temperature (Tg), and the Tg of HN-CO-NH group is 244℃(POAU(T)) and 243℃(POAU(M)), the Tg of imide ring is 329℃(POAU(T)) and 331℃(POAU(M)). The pretilt angle test result shows that the polyureas-imide is a good alignment film materi-al for liquid crystal molecules.

SK手刮聚脲弹性体材料适用于处理混凝土裂缝、防渗及有抗冲抗磨要求的建筑物表面，文章介绍了SK手刮聚脲弹性涂料在博湖西泵站更新改造工程出水流道混凝土防渗加固中的应用，经2年多的运行，通过对出水流道内部SK手刮聚脲表面观察，未出现磨损裂缝及变形情况。

SK brushing polyurea elastomer material is suitable for the treatment of concrete cracks, seepage control and the building surface of impact abrasion requirements.Application of SK Brushing polyurea elastic coating in Bohu West Pumping Station Update Project is introduced.After more than 2 years of operation,through the SK brushing polyurea surface observation at the outlet internal,there is not wearing crack and deformation.

采用混凝土表面涂层保护技术对高铁桥梁混凝土进行防蚀保护，自制羟基树脂和异氰酸酯预聚物等原料，合成一种适用于聚脲涂料的环氧-聚氨酯体系的混凝土封闭底漆。提高了聚脲涂层对基材的附着力，还有效封闭混凝土表面。

The concrete coating protection technology has been used for corrosion protection of high-speed rail bridge concrete. Self-made hydroxy resin and isocyanate ester prepolymer were used to synthesize a kind of concrete primer sealer for polyurea coatings epoxy - polyurethane system. The concrete primer sealer not only can improve the polyurea coating adhesion to the substrate, but also effectively seal the surface of the concrete.