Study on the effect of catalyst on the mechanical properties of silicate modified polyurethane grouting material
Bai Guangfeng1,2,3
1. Mining Materials Branch, Coal Science and Technology Research Institute Company, Beijing 100013, China;
2. State Key Laboratory of High Efficient Mining and Clean Utilization of Coal Resources, Beijing 100013, China;
3. National Energy Technology and Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013, China
By adjusting the type and proportion of the catalyst, a silicate modified polyurethane (WG/PU) grouting material was prepared. The curing time and mechanical properties of grouting materials were determined, and the influence of catalysts on the mechanical properties of grouting materials was analyzed. The experimental results show that the curing time and the type of catalyst have a greater impact on the mechanical properties of the grouting material. The lower reaction activity and the trimerization catalyst will significantly improve the mechanical properties of the grouting material. When using the composite catalyst of ZR-70 and KAc was used, the bonding strength and compressive strength were 4.23 MPa and 61.70 MPa, respectively; when using the composite catalyst of A33 and DMP-30, the bonding strength and compressive strength were 3.14 MPa and 59.72 MPa, respectively.
柏广峰 1,2,3. 催化剂对硅酸盐改性聚氨酯注浆材料力学性能的研究[J]. 煤炭与化工, 2020, 43(10): 119-121,139.
Bai Guangfeng1,2,3. Study on the effect of catalyst on the mechanical properties of silicate modified polyurethane grouting material. CCI, 2020, 43(10): 119-121,139.
