Water curing asphalt polyurethane composite waterproof coating and preparation method thereof

A waterproof coating, polyurethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems such as being unsuitable for building surface waterproofing, difficult to lay on complex-shaped base surfaces, leakage, etc., to achieve flexible construction ratios The effect of convenience, low cost and simple preparation and processing technology

Active Publication Date: 2012-11-14
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the waterproof membrane is mainly constructed by adhesive bonding or hot-melt bonding. During the construction process, if the joints are not tight, it will easily cause leakage; on the other hand, the waterproof membrane is suitable for the construction of a flat base surface. It is difficult to pave the complex-shaped base surface; the waterproof sealing material is mainly used to seal the cracks or joints of the building, and is not suitable for the waterproof project of the building surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Preparation method of component A

[0049] Add 48 parts of polyether diol DL-2000, 26 parts of polyether triol MN-3050 and 8 parts of polyether triol EP-330N into the reaction kettle, stir and heat to 105 °C. Dehydration under reduced pressure at -0.09 MPa for 2 hours, and then cooled to 55 °C after being protected by nitrogen; then 17.5 parts of toluene diisocyanate was added, and the temperature was stirred for 30 minutes; then the temperature was raised to 75 °C, and the temperature was stirred for 2 hours; finally, the temperature was lowered to After room temperature, add 4 parts of dibutyl phthalate and stir evenly, pack and discharge to obtain component A;

[0050] (2) Preparation method of component B

[0051] Heat 55 parts of petroleum asphalt to 80 °C, add into the reaction kettle by metering, add 10 parts of tricaprylic acid glyceride and 18 parts of dibutyl phthalate in sequence, stir and mix evenly, then cool down to about 40 °C; then add Span-80 2.6...

Embodiment 2

[0053] (1) Preparation method of component A

[0054] Add 36 parts of polyether diol DL-2000, 8 parts of polyether diol DL-1000 and 28 parts of polyether triol MN-3050 into the reaction kettle, stir and heat to 110±5 °C, in vacuum Dehydration under reduced pressure at -0.07 MPa for 3 h, and then cooled to 50 °C after nitrogen protection; then 21 parts of toluene diisocyanate was added, and kept stirring for 30 min; then the temperature was raised to 75 °C, and stirred for 3 h at constant temperature; finally After cooling down to room temperature, add 5.5 parts of dioctyl phthalate and stir evenly, pack and discharge to obtain component A;

[0055] (2) Preparation method of component B

[0056] Heat 50 parts of petroleum asphalt to 80 ℃, measure and add to the reaction kettle, add 19 parts of pentaerythritol cetanoate and 20 parts of dioctyl phthalate in sequence, stir and mix evenly, then cool down to about 40 ℃; then add monostearic acid 0.9 parts of acid glyceride and 2....

Embodiment 3

[0058] (1) Preparation method of component A

[0059] Add 47 parts of polyether diol DL-2000 and 31 parts of polyether triol EP-330N into the reaction kettle, stir and heat to 110±5 °C, and dehydrate under reduced pressure at -0.08 MPa for 2 h , and then cooled to 50 °C after nitrogen protection; then added 22 parts of diphenylmethane diisocyanate, and kept stirring for 30 minutes; then raised the temperature to 70 °C, stirred and reacted for 3.5 h at a constant temperature; Stir 5 parts of dibutyl formate evenly, pack and discharge to obtain component A;

[0060] (2) Preparation method of component B

[0061] Heat 65 parts of petroleum asphalt to 80 °C, add it into the reaction kettle by metering, add 17 parts of tricaprylic acid glyceride and 15 parts of dibutyl phthalate in sequence, stir and mix evenly, then cool down to 50 °C; then add polyoxyethylene oleyl alcohol 2.5 parts of ether and 10 parts of water were stirred at high speed for 2 h to fully disperse the water; ...

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Abstract

A water curing asphalt polyurethane composite waterproof coating mainly comprises a component A and a component B. In terms of mass part, the component A consists of 60-85 parts of polyether polyol, 10-25 parts of isocyanate and 2-10 parts of plasticizer; and the component B consists of 40-70 parts of petroleum asphalt, 5-20 parts of compatilizer, 6-25 parts of plasticizer, 0.5-4 parts of stabilizer, 1-12 parts of water, 25-55 parts of filler, 8-20 parts of calcium hydroxide, 0.1-2 parts of catalyst and the like. When the water curing asphalt polyurethane composite waterproof coating is in use, the component A and the component B are uniformly mixed and the mixture is directly smeared on a waterproof datum plane of a building and is cured to form a waterproof film with the advantages of high strength, high elasticity and favorable low-temperature flexibility. The water curing asphalt polyurethane composite waterproof coating disclosed by the invention is simple in production process, low in cost and free from of tar or any organic solvent, meets the requirement of environment friendliness, is suitable for water resistance, seepage resistance and moisture resistance of construction engineering such as roofs, basements, bridges, tunnels and culverts and is especially suitable for waterproof engineering of damp datum planes.

Description

technical field [0001] The invention relates to a polyurethane waterproof coating, in particular to a water-cured asphalt polyurethane composite waterproof coating and a preparation method thereof, belonging to the field of building waterproof materials. The polyurethane waterproof coating is suitable for waterproofing, anti-seepage and moisture-proofing of buildings such as basements, bridges, tunnels, and culverts, and is especially suitable for waterproofing projects on wet base surfaces. Background technique [0002] Building waterproof materials are the basis of building waterproofing projects, and their quality directly affects the quality of building waterproofing projects and the service life of buildings. There are various kinds of building waterproof materials with different performances, mainly including three series of waterproof coiled materials, waterproof coatings and waterproof sealing materials. On the one hand, the waterproof membrane is mainly constru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/66C08G18/32
Inventor 颜永斌覃彩芹李伟付梅芳王志华
Owner HUBEI ENG UNIV
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