固化成膜后有很高的机械强度的题述涂料含12％～28％的含NCO基的异氰酸酯主体树脂和含PTMG的固化剂。(将(A)50:50的含12％NCO的MDI-PTMG预聚物和碳化二亚胺改性的MDI的混合物和(B)DOP 16.95份、PTMG 80份、颜料浆3份、二甲基咪唑异辛酸...固化成膜后有很高的机械强度的题述涂料含12％～28％的含NCO基的异氰酸酯主体树脂和含PTMG的固化剂。(将(A)50:50的含12％NCO的MDI-PTMG预聚物和碳化二亚胺改性的MDI的混合物和(B)DOP 16.95份、PTMG 80份、颜料浆3份、二甲基咪唑异辛酸酯0.05份的混合物在20℃时的粘度分别为0.8 Pa s和0.3 Pa s。)A、B和填料(10:90的沸石:碳酸钙的混合物)以1:2:2混合而成的涂料在23℃、50％相对湿度下的施工期限为80 min。展开更多
In order to reduce the cohesive force between pavement and ice, the approach of pavement surface coating with hydrophobic admixtures is investigated. The deicing effect of this approach is examined by the contact angl...In order to reduce the cohesive force between pavement and ice, the approach of pavement surface coating with hydrophobic admixtures is investigated. The deicing effect of this approach is examined by the contact angle test and the shear test. The durability of the approach is examined by the accelerated abrasion test, and the skid resistance of the pavement with surface coating is examined by the British pendulum test and the surface texture depth test. In the contact angle test, the contact angle between hydrophobic admixture and water is 100.2°. In the shear test, the maximum shear stress is 0.06 MPa for the specimen coated with hydrophobic admixture, which is much lower than that of the specimen without hydrophobic admixture coating, 3.5 MPa. Furth- ermore, the ice and asphalt surface are completely separated for the coated specimen while not for the uncoated specimen. Based on the accelerated abrasion test, the residual hydro- phobic admixture in the veins of the pavement after abrasion still has a deicing effect. From the skid resistance tests, the British pendulum number （BPN） and the texture depth （TD） of the specimen coated with hydrophobic admixtures are larger than those of the standard requirements. The overall experi-mental observation indicates that the approach can effectively reduce close contact between asphalt pavement and ice; therefore, it can be a promising solution to road icing problems in winter.展开更多
文摘固化成膜后有很高的机械强度的题述涂料含12％～28％的含NCO基的异氰酸酯主体树脂和含PTMG的固化剂。(将(A)50:50的含12％NCO的MDI-PTMG预聚物和碳化二亚胺改性的MDI的混合物和(B)DOP 16.95份、PTMG 80份、颜料浆3份、二甲基咪唑异辛酸酯0.05份的混合物在20℃时的粘度分别为0.8 Pa s和0.3 Pa s。)A、B和填料(10:90的沸石:碳酸钙的混合物)以1:2:2混合而成的涂料在23℃、50％相对湿度下的施工期限为80 min。
文摘In order to reduce the cohesive force between pavement and ice, the approach of pavement surface coating with hydrophobic admixtures is investigated. The deicing effect of this approach is examined by the contact angle test and the shear test. The durability of the approach is examined by the accelerated abrasion test, and the skid resistance of the pavement with surface coating is examined by the British pendulum test and the surface texture depth test. In the contact angle test, the contact angle between hydrophobic admixture and water is 100.2°. In the shear test, the maximum shear stress is 0.06 MPa for the specimen coated with hydrophobic admixture, which is much lower than that of the specimen without hydrophobic admixture coating, 3.5 MPa. Furth- ermore, the ice and asphalt surface are completely separated for the coated specimen while not for the uncoated specimen. Based on the accelerated abrasion test, the residual hydro- phobic admixture in the veins of the pavement after abrasion still has a deicing effect. From the skid resistance tests, the British pendulum number （BPN） and the texture depth （TD） of the specimen coated with hydrophobic admixtures are larger than those of the standard requirements. The overall experi-mental observation indicates that the approach can effectively reduce close contact between asphalt pavement and ice; therefore, it can be a promising solution to road icing problems in winter.
