Preparation method of single-component polyurethane waterproofing paint
A polyurethane waterproof, one-component technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve environmental and human health hazards, carcinogenic and other problems, and achieve excellent waterproof performance, excellent mechanical properties and chemical properties.
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Embodiment 1
[0023] Take 88g of polyether diol, 30g of polyether triol, and 90g of plasticizer, add them to a three-necked flask, raise the temperature to 70°C, add 15g of porous microbead carrier getter (ceramic porous microbeads—adsorption auxiliary agent— Calcium oxide), 83g talcum powder and 20g kaolin, heat up to 105°C-125°C for vacuum dehydration for 3h, cool down to 40-50°C, add 8.6 toluene diisocyanate, slowly heat up, control the temperature at 75-83°C, react for 2h, cool down When the temperature is below 70°C, add a catalyst, a leveling agent, an anti-aging agent, and a defoamer, stir for 30 minutes, and discharge to obtain the waterproof coating of the present invention.
Embodiment 2
[0025] Take 88g of polyether diol, 30g of polyether triol, and 90g of plasticizer, add them to a three-necked flask, raise the temperature to 70°C, add 15g of porous microbead carrier getter (ceramic porous microbeads—adsorption auxiliary agent— Calcium Oxide - Magnesium Oxide). 83g talcum powder and 20g kaolin, heat up to 105°C-125°C for vacuum dehydration for 3 hours, cool down to 40-50°C, add 8.6 toluene diisocyanate, slowly heat up, control the temperature at 75-83°C, react for 2h, cool down to below 70°C , add catalyst, leveling agent, anti-aging agent, defoamer, stir for 30 minutes, and discharge to obtain the waterproof coating of the present invention.
Embodiment 3
[0027] Take 88g of polyether diol, 30g of polyether triol, and 90g of plasticizer, add them to a three-necked flask, raise the temperature to 70°C, add 15g of porous microbead carrier getter (ceramic porous microbeads—adsorption auxiliary agent— Magnesium oxide), 83g talcum powder and 20g kaolin, heat up to 105°C-125°C for vacuum dehydration for 3h, cool down to 40-50°C, add 8.6 toluene diisocyanate, slowly heat up, control the temperature at 75-83°C, and react for 2h, Cool down to below 70°C, add catalyst, leveling agent, anti-aging agent, defoamer, stir for 30 minutes, and discharge to obtain the waterproof coating of the present invention.
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