Single-component polyurethane waterproof coating material

A polyurethane waterproof, one-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of troublesome construction of two-component coatings, affecting the waterproof effect, environmental protection threats, etc. The effect of shortening the construction period and fast construction speed

Inactive Publication Date: 2020-02-25
XIANGYANG JOYOUNG WATERPROOF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, although the single-component asphalt-based polyurethane waterproof coating avoids the problem of troublesome construction of two-component coatings, it still poses a threat to environmental protection because it is based on asphalt-based coatings.
In addition, the existing one-component waterproof coating is cured by moisture absorption, and the curing time is long. In the thick coating, it is easy to generate air bubbles and affect the waterproof effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A one-component polyurethane waterproof coating comprises the following components in parts by weight:

[0017] 100 parts of polyester polyols, wherein the mass ratio of polyoxypropylene diol and polyoxypropylene triol is 5:1;

[0018] 75 parts of cresyl diisocyanate, including 60 parts of cresyl 2,4 diisocyanate and 15 parts of cresyl 2,6 diisocyanate;

[0019] 90 parts of organic solvents, including 30 parts of toluene and 60 parts of xylene;

[0020] 300 parts of talcum powder;

[0021] 10 parts of silicone defoamer;

[0022] 35 parts of oxazolidine type latent curing agent;

[0023] Dispersant 80 parts.

Embodiment 2

[0025] A one-component polyurethane waterproof coating comprises the following components in parts by weight:

[0026] 200 parts of polyester polyols, wherein the mass ratio of polyoxypropylene diol and polyoxypropylene triol is 4:1;

[0027] 100 parts of cresyl diisocyanate, including 80 parts of cresyl 2,4 diisocyanate and 20 parts of cresyl 2,6 diisocyanate;

[0028] 65 parts of organic solvent xylene;

[0029] 200 parts of filler, including 100 parts of activated calcium carbonate and 100 parts of wollastonite powder.

[0030] 20 parts of silicone defoamer;

[0031] 50 parts of ketimine type latent curing agent;

[0032] Dispersant 50 parts.

Embodiment 3

[0034] A one-component polyurethane waterproof coating comprises the following components in parts by weight:

[0035] 150 parts of polyester polyols, wherein the mass ratio of polyoxypropylene diol to polyoxypropylene triol is 4 to 6:1;

[0036] 50 parts of cresyl diisocyanate, including 40 parts of cresyl 2,4 diisocyanate and 10 parts of cresyl 2,6 diisocyanate;

[0037] 40 parts of organic solvent, wherein, 10 parts of toluene, 20 parts of xylene, 10 parts of acetone;

[0038] 400 parts of filler, including 200 parts of talc powder, 100 parts of activated calcium carbonate, and 100 parts of wollastonite powder.

[0039] 30 parts of silicone defoamer;

[0040] 20 parts of oxazolidine type latent curing agent;

[0041] 65 parts of dispersant.

[0042] The one-component polyurethane waterproof coating of any of the above embodiments has strong adhesion to its layer, dense coating, no pinholes, no air bubbles, and small water vapor permeability coefficient, which can be wat...

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PUM

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Abstract

The invention discloses a single-component polyurethane waterproof coating material, and belongs to the technical field of waterproof coating materials, wherein the coating material comprises, by weight, 100-200 parts of polyester polyol, 50-100 parts of toluene diisocyanate, 40-90 parts of an organic solvent, 200-400 parts of a filler, 10-30 parts of an organic silicon defoamer, 20-50 parts of alatent curing agent and 50-80 parts of a dispersing agent. According to the invention, the single-component polyurethane waterproof coating material has advantages of high binding power with the layer, compact coating, no pinhole, no bubble and small water vapor permeability coefficient, is waterproof, can be used as a gas barrier layer, can be directly constructed on the surface of a humid base layer, and has high construction speed so as to shorten the construction period.

Description

technical field [0001] The invention belongs to the technical field of waterproof coatings, in particular to a one-component polyurethane waterproof coating. Background technique [0002] Polyurethane waterproof coatings are prepolymers containing isocyanate groups formed by addition polymerization of isocyanate and polyether, together with catalysts, anhydrous additives, anhydrous fillers, solvents, etc., and processed through mixing and other processes One-component polyurethane waterproof coating. This type of coating is a reaction-curing (moisture-curing) coating, which has the characteristics of high strength, high elongation, and good water resistance. Strong adaptability to base deformation. Polyurethane waterproof coating is a single-component environmentally friendly waterproof coating for liquid construction. It is based on imported polyurethane prepolymer and has no additives such as tar and asphalt. It solidifies after exposure to moisture in the air, forming ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/61C08G18/48
CPCC08G18/4825C08G18/4829C08K2003/265C09D7/61C09D175/08C08K3/34C08K3/26
Inventor 刘启军
Owner XIANGYANG JOYOUNG WATERPROOF MATERIAL
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