Polyurethane resin mortar for cement base material repairing
A polyurethane resin and cement-based material technology, applied in the field of polyurethane resin mortar, can solve the problems of poor aging resistance, long curing time, slow strength growth, etc., and achieve the effects of good low-temperature curing, excellent durability and fast curing speed.
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Embodiment 1
[0019] Composition of polyurethane resin mortar: Component A: 100 parts of polyether polyol, 20 parts of plasticizer dibutyl phthalate, 0.2 part of catalyst dibutyltin dilaurate, defoamer A-530 (Bick, Germany) 0.1 parts, 10 parts of chain extender 1,4-butanediol, 2 parts of coupling agent KH-550, 2 parts of ultraviolet absorber UV-327, 2 parts of antioxidant 1010. Pour the above-mentioned parts of materials into the reaction kettle, stir for 1 hour under the conditions of rotation speed of 100 rpm, temperature of 90°C, and pressure of -0.1MPa, after cooling, discharge and pack as component A.
[0020] Component B: MDI (Yantai Wanhua), directly packaged as component B.
[0021] Component C: 20 parts of cement, 80 parts of river sand. Use a blender to stir evenly and then discharge and pack as component C.
[0022] The polyurethane resin mortar composition of the present invention is obtained by stirring and mixing the above three parts of raw materials A, B and C in a weight ...
Embodiment 2
[0025] Composition of polyurethane resin mortar: Component A: 40 parts of polyoxypropylene triol, 60 parts of polytetrahydrofuran diol, 5 parts of plasticizer dioctyl phthalate, 0.01 part of catalyst stannous octoate, defoamer BYK- 0.5 parts of 066N (Bick, Germany), 30 parts of chain extender 3,3'-dichloro-4,4'-diamino-diphenylmethane (MOCA), 3 parts of coupling agent KH-560, light stabilizer 744 5 copies. Pour the above-mentioned parts of materials into the reaction kettle, stir for 0.5 hours at a rotation speed of 150 rpm, a temperature of 80°C, and a pressure of -0.09MPa, and then discharge and package as component A after cooling.
[0026] Component B: PAPI (Yantai Wanhua), directly packaged as component B.
[0027] C component: quartz sand. Immediately packaged as a C component.
[0028] The polyurethane resin mortar composition of the present invention is obtained by stirring and mixing the above three parts of raw materials A, B and C in a weight ratio of 10:10:30. ...
Embodiment 3
[0031] Composition of polyurethane resin mortar: Component A: 100 parts of polybutadiene glycol, 60 parts of plasticizer diethylene glycol dibenzoate, 1 part of catalyst lead isooctanoate, 2 parts of catalyst potassium acetate, defoamer A 2 parts of -530, 15 parts of chain extender trimethylolpropane, 1 part of hydrolysis stabilizer. Pour the above-mentioned parts of materials into the reaction kettle, stir for 1.5 hours under the conditions of rotation speed of 120 rpm, temperature of 110°C, and pressure of -0.08MPa, and then discharge and package as component A after cooling.
[0032] Component B: HMDI (BASF), packaged directly as Component B.
[0033] Component C: 30 parts of heavy calcium, 10 parts of silica fume, 20 parts of titanium dioxide, 50 parts of river sand. Use a blender to stir evenly and then discharge and pack as component C.
[0034] The polyurethane resin mortar composition of the present invention is obtained by stirring and mixing the above three parts o...
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