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与传统化学加固材料相比,新型聚氨酯/聚脲加固材料既有聚氨酯材料的强度高,膨胀性及密封性好的特点,又具有聚脲材料物理化学性能稳定,反应时对水分、湿气不敏感的特点。所制备的加固材料的最低抗压强度为64.3 MPa,最低抗剪切强度为22.5 MPa,最低抗拉强度为27.5 MPa,可以同时满足煤体加固和岩体加固的要求。
Compared with the traditional chemical strengthening material, the new polyurethane / polyurea reinforced material not only has the advantages of high strength, good expansibility and good sealing property of the polyurethane material, but also has the stable physicochemical properties of the polyurea material. When the reaction is performed, moisture, moisture are not Sensitive features. The minimum compressive strength of the reinforced material is 64.3 MPa, the minimum shear strength is 22.5 MPa and the minimum tensile strength is 27.5 MPa, which can meet the requirements of both coal reinforcement and rock mass reinforcement.