Waterproof material for cement concrete bridge floor and preparation method of waterproof material
A technology of cement concrete and waterproof materials, applied in asphalt coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as single composition structure, poor high temperature resistance, and pavement layer shifting, and achieve firm bonding and smooth construction The operation is safe and convenient, and the effect of reducing the damage of the bridge structure
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[0022] Example 1: A waterproof material for cement concrete bridge deck, the waterproof material is formed from 4,4-diphenylmethane diisocyanate MDI and composite polyol to generate urethane, and then adds No. 70 ordinary heavy-cross asphalt It is compounded and modified by stannous octoate, compound defoamer and ethyl acetate;
[0023] The composite polyol oxidized polypropylene diol and oxidized polypropylene triol are mixed in a mass ratio of 3:1, the isocyanate group of the 4,4-diphenylmethane diisocyanate MDI and the hydroxyl group in the composite polyol are The molar ratio is controlled to be 3:1.
[0024] The composite defoamer is Ca(OH)2 and emulsified silicone oil in a mass ratio of 1:1, and an amount of 0.4% of the isocyanate.
[0025] The amount of the No. 70 common heavy-cross asphalt is 80% of the urethane;
[0026] Described stannous octoate consumption is 0.5% of isocyanate;
[0027] A method for preparing a waterproof material for a cement concrete bridge d...
Example Embodiment
[0028] Embodiment 2: A kind of waterproof material for cement concrete bridge deck, the waterproof material is made of toluene diisocyanate TDI and composite polyol to generate urethane, and then add No. 90 ordinary heavy-cross asphalt, dibutyltin dilaurate, Compound defoamer and ethyl acetate compound modification;
[0029] The composite polyol oxidized polypropylene diol and oxidized polypropylene triol are mixed in a mass ratio of 2:1, and the molar ratio of the isocyanate group of the toluene diisocyanate TDI to the hydroxyl group in the composite polyol is controlled to be 5:1 .
[0030] The composite defoamer is Ca(OH)2 and emulsified silicone oil in a mass ratio of 1:1, and an amount of 0.5% of the isocyanate.
[0031] The amount of the No. 90 common heavy-cross asphalt is 85% of the urethane;
[0032] Described dibutyltin dilaurate consumption is 0.6% of isocyanate;
[0033] A method for preparing a waterproof material for a cement concrete bridge deck, the steps of...
Example Embodiment
[0034] Example 3: A waterproof material for cement concrete bridge deck, the waterproof material is formed from 4,4-diphenylmethane diisocyanate MDI and composite polyol to generate urethane, and then adds No. 90 ordinary heavy-cross asphalt Modified by stannous octoate and dibutyltin dilaurate, composite defoamer and ethyl acetate;
[0035] The composite polyol oxidized polypropylene diol and oxidized polypropylene triol are mixed in a mass ratio of 4:1, and the isocyanate group of the 4,4-diphenylmethane diisocyanate MDI and the hydroxyl group in the composite polyol are The molar ratio was controlled to be 4:1.
[0036] The composite defoamer is Ca(OH)2 and emulsified silicone oil in a mass ratio of 1:1.3, and an amount of 0.3% of the isocyanate.
[0037] The amount of the No. 90 common heavy-cross asphalt is 75% of the urethane;
[0038] Described dibutyltin dilaurate consumption is 0.6% of isocyanate;
[0039]A preparation method of waterproof material for cement concr...
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