以下是聚脲涂料的成分与性能分析：

　　The following is the analysis of composition and properties of polyurea coatings:

　　聚脲涂料主要是由异氰酸酯组分和聚醚胺的组合料组成的，现有的聚脲原材料主要由MDI、聚醚多元 胺、聚醚多元醇、胺扩链剂、各种功能助剂、颜填料、活性稀释剂等组成。

　　Spray polyurea coating is mainly composed of isocyanate group and polyether amine compound consisting of existing polyurea raw materials mainly by the composition of MDI, polyether polyamine, polyether polyol, polyamine chain extender, each kind of function additives, pigments and fillers, active diluent.

　　1、各种不同MDI对聚脲涂膜机能的影响

　　1, the different influence on the performance of the polyurea coating on MDI

　　液化的MDI：液化的MDI一般是4位对称的结构，可以增强涂膜的拉伸的强度，加快反应的速度;

　　Liquefied MDI: Liquefied MDI is generally 4 bit symmetrical structure, can enhance the tensile strength of the film, speed up the reaction;

　　粗MDI：因具有高官能度，可以有效进步涂膜的撕裂强度;

　　MDI: because of the high level of the officials, can effectively improve the film's tear strength;

　　MDI-50：因有50%4位异构体，阻碍了异氰酸酯与胺的反应，可以延缓涂膜的反应的速度，加快涂膜表面的流平机能，同时降低了涂膜的拉伸强度。

　　MDI-50: because there are 50%4 isoforms, the reaction of isocyanate and amine, can delay the film's reaction speed, and speed up the film surface, while reducing the tensile strength of the film.

　　2、各种聚醚多元醇对预聚体、涂膜机能的影响

　　2. The influence of various polyether polyol on the function of the pre polymer and the film

　　EP330N：相对分子质量为5000的3官能度聚醚，与MDI制造的预聚体粘度较高，涂膜拉伸强度高

　　EP330N: the relative molecular weight of 3 of the 5000 functional polyether, with MDI produced by the high viscosity of the polymer, the film tensile strength

　　GE220A：相对分子质量为2000的2官能度聚醚，与MDI制造的预聚体粘度较低，涂膜断裂伸长率高;

　　GE220A: the relative molecular weight of 2 of the 2000 functional polyether, with MDI produced by the low viscosity of the polymer, the film elongation at break;

　　3、各种聚醚胺对涂膜机能的影响

　　3, the influence of various polyether amine on the film performance

　　D-2000：相对分子质量为2000的2官能度端氨基聚醚，可有效进步断裂伸长率;

　　D-2000: the relative molecular weight of 2 of the 2000 functional amino polyether, can effectively improve the elongation at break;

　　T-5000：相对分子质量为5000的3官能度端氨基聚醚，可有效进步拉伸强度;

　　T-5000: the relative molecular weight of 3 of the 5000 functional amino polyether, can effectively improve the tensile strength;

　　D-230：相对分子质量为230的2官能度端氨基聚醚，可有效进步反应速度。

　　D-230: the relative molecular weight of 2 of the 230 functional amino polyether, can effectively improve the reaction rate.

　　4、各种扩链剂对涂膜机能的影响

　　4, the effect of various chain expanding agent on film function

　　DMTDA(3，5二甲硫基甲苯二胺)：可降低反应速度，进步涂膜的流平性;

　　DMTDA (5, two, two, 3 amine): it can reduce the reaction rate, and progress of the film flow;

　　4200：可有效延长凝胶时间，进步附着力。

　　4200: can effectively extend the gel time, progress of adhesion.

　　MOCA(3，3''-二氯-4，4''二氨基二苯甲烷)：可有效进步涂膜硬度;

　　MOCA (3, 3''- two, 4''two, -4 two): can effectively improve the film hardness;

　　DETDA(二乙基甲苯二胺)：可有效进步涂膜的拉伸强度、耐冲击机能等;

　　DETDA (two ethyl toluene two amine): it can effectively improve the tensile strength, impact resistance, etc.;