Polyurethane-water glass composite grouting material and preparation method thereof
A grouting material and water glass technology, applied in the field of construction materials, can solve the problems of inconvenience in actual production and construction, poor initial setting time, poor compressive strength and elastic modulus, catalyst components and water glass are prone to delamination, etc. Achieve the effect of shortening the initial setting time, good pourability and good compressive strength
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example 1
[0030] Take 150g of water glass, 30g of polyoxypropylene triol, and 10g of neopentyl glycol, put them into a high-pressure reactor, seal and evacuate until the vacuum in the reactor is 100Pa, then heat to 100°C for dehydration for 2 hours, and cool to room temperature To obtain a pretreatment liquid, add 0.9g dibutyltin dilaurate, 1g silane coupling agent, 0.3g surfactant to the pretreatment liquid, stir at 300r / min for 20min, obtain A component, take polyoxypropylene triol Put it into a high-pressure reactor, seal and evacuate until the vacuum degree in the reactor is 100Pa, then heat to 100°C for dehydration treatment for 2 hours, and cool to 60°C to obtain dehydration-treated polyoxypropylene triol, take 40g of dehydration-treated polyoxypropylene triol Alcohol, 64g diphenylmethane diisocyanate, and heated to 70°C, heat preservation reaction for 6h, after cooling to 60°C, add 40g dihydroxypolydimethylsiloxane, 4g toluene, 0.6g dibutyltin dilaurate, and heat to 70°C, keep wa...
example 2
[0032]Take 180g of water glass, 35g of polyoxypropylene triol, and 12g of neopentyl glycol, put them into a high-pressure reactor, seal and evacuate until the vacuum in the reactor is 500Pa, then heat to 110°C for dehydration for 2 hours, and cool to room temperature To obtain a pretreatment solution, add 1.2g of dibutyltin dilaurate, 1g of silane coupling agent, and 0.4g of surfactant to the pretreatment solution, and stir at 350r / min for 25min to obtain component A, which is packed in polyoxypropylene triol. Put it into a high-pressure reaction kettle, seal and evacuate until the vacuum degree in the reaction kettle is 500Pa, then heat to 110°C for dehydration treatment for 2 hours, and cool to 65°C to obtain dehydration-treated polyoxypropylene triol. Take 50g of dehydration-treated polyoxypropylene triol Alcohol, 80g diphenylmethane diisocyanate, and heated to 75°C, heat preservation reaction for 7h, after cooling to 65°C, add 50g dihydroxypolydimethylsiloxane, 5g toluene, ...
example 3
[0034] Take 200g of water glass, 40g of polyoxypropylene triol, and 15g of neopentyl glycol, put them into a high-pressure reactor, seal and evacuate until the vacuum in the reactor is 1000Pa, then heat to 120°C for dehydration for 3 hours, and cool to room temperature To obtain the pretreatment solution, add 1.5g dibutyltin dilaurate, 2g silane coupling agent, 0.5g surfactant to the pretreatment solution, stir at 400r / min for 30min to obtain component A, take polyoxypropylene triol Put it into a high-pressure reaction kettle, seal and evacuate until the vacuum degree in the reaction kettle is 1000Pa, then heat to 120°C for dehydration treatment for 3 hours, and cool to 70°C to obtain dehydration-treated polyoxypropylene triol, take 60g of dehydration-treated polyoxypropylene triol Alcohol, 90g diphenylmethane diisocyanate, and heated to 80°C, heat preservation reaction for 8h, after cooling to 70°C, add 60g dihydroxypolydimethylsiloxane, 6g toluene, 0.8g dibutyltin dilaurate, ...
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