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Single-component waterborne polyurethane waterproof coating and preparation method thereof

A water-based polyurethane and waterproof coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor water resistance and poor mechanical properties, and achieve the effects of excellent mechanical properties, excellent water resistance and moderate reaction speed.

Active Publication Date: 2022-03-15
YUZHONGQING WATERPROOF MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention will solve is the problem that the current conventional water-based waterproof coating has poor mechanical properties and poor water resistance. In order to achieve the technical effect of the present invention, the following technical solutions are adopted:

Method used

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  • Single-component waterborne polyurethane waterproof coating and preparation method thereof
  • Single-component waterborne polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, a kind of one-component waterborne polyurethane waterproof coating, is composed as follows:

[0034] 150 parts by weight polyether N210

[0035] 200 parts by weight polyether N220

[0036] 60 parts by weight polyether N204

[0037] 50 parts by weight polyether N330

[0038] 40 parts by weight of PTMEG-1000

[0039] 50 parts by weight of PTMEG-2000

[0040] 100 parts by weight of fluorinated hydroxyl-terminated polysiloxane (average molecular weight 550)

[0041] 250 parts by weight MDI-50

[0042] 100 parts by weight Versalink P2000

[0043] 65 parts by weight acetone

[0044] 10 parts by weight dimethylolpropionic acid

[0045] 1.5 parts by weight stannous octoate

[0046] 5.7 parts by weight triethylamine

[0047] 1100 parts by weight deionized water

[0048] 3.5 parts by weight BYK water-based dispersant BYK2010

[0049] 700 parts by weight 800 mesh heavy calcium carbonate

[0050] 300 parts by weight of 600 mesh heavy calcium carbonate

[0...

Embodiment 2

[0064] Embodiment 2, a kind of one-component waterborne polyurethane waterproof coating, is composed as follows:

[0065] 100 parts by weight polyether N210

[0066] 300 parts by weight polyether N220

[0067] 60 parts by weight polyether N204

[0068] 50 parts by weight polyether 330N

[0069] 30 parts by weight of PTMEG-2000

[0070] 30 parts by weight of fluorinated hydroxyl-terminated polysiloxane (average molecular weight 550)

[0071] 60 parts by weight of fluorinated hydroxyl-terminated polysiloxane (average molecular weight 1750)

[0072] 115 parts by weight HDI

[0073] 20 parts by weight Versalink P2000

[0074] 80 parts by weight butanone

[0075] 10 parts by weight of dimethylolbutyric acid

[0076] 1.8 parts by weight dibutyltin dilaurate

[0077] 5.0 parts by weight AMP-95

[0078] 1000 parts by weight deionized water

[0079] 3.0 parts by weight Clariant water-based dispersant DISPERSOGEN LFS

[0080] 700 parts by weight 800 mesh heavy calcium carbon...

Embodiment 3

[0094] Embodiment 3, a kind of one-component waterborne polyurethane waterproof coating, is composed as follows:

[0095] 150 parts by weight polyether N210

[0096] 300 parts by weight polyether N220

[0097] 80 parts by weight polyether N204

[0098] 50 parts by weight polyether N330

[0099] 10 parts by weight of PTMEG-3000

[0100] 30 parts by weight of PTMEG-2000

[0101] 100 parts by weight of fluorinated hydroxyl-terminated polysiloxane (average molecular weight 1750)

[0102] 150 parts by weight TDI-80

[0103] 10 parts by weight Versalink P650

[0104] 50 parts by weight Versalink P1000

[0105] 70 parts by weight N,N-dimethylformamide

[0106] 10 parts by weight dimethylolpropionic acid

[0107] 2.3 parts by weight stannous octoate

[0108] 5.2 parts by weight triethylamine

[0109] 1100 parts by weight deionized water

[0110] 4.0 parts by weight BASF dispersant Tamol NN 8906

[0111] 900 parts by weight of 600 mesh heavy calcium carbonate

[0112] 2.1...

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Abstract

The invention discloses a single-component waterborne polyurethane waterproof coating and a preparation method thereof. The coating is prepared from the following raw materials: polyether glycol, polyether triol, polytetrahydrofuran ether glycol, fluorine-containing hydroxyl-terminated polysiloxane, diisocyanate, aromatic diamine containing a polytetrahydrofuran ether chain segment, a water-based chain extender, a neutralizer, a solvent, a catalyst, deionized water, a water-based dispersant, a powder filler, water-based color paste, a thickener, an anticorrosive bactericide and a defoaming agent. And an antifreezing agent. The prepared single-component waterborne polyurethane waterproof coating has excellent comprehensive performance, the film-forming tensile strength ranges from 2.4 MPa to 6.9 MPa, the elongation at break ranges from 534.2% to 752.1%, and the water resistance can meet the requirements of solvent type polyurethane waterproof coatings.

Description

technical field [0001] The invention discloses a one-component waterborne polyurethane waterproof coating and a preparation method thereof, belonging to the technical field of waterproof coatings. Background technique [0002] Architectural waterproof coatings are an indispensable class of materials in modern construction projects. Among them, there are two common types of resin waterproof coatings, one is polyurethane waterproof coatings, which are solvent-based; the other is single-component water-based polyacrylate coatings and water-based polyacrylate emulsions and cement and other powders. Polymer cement waterproof coating. Polyurethane waterproof coating has the advantages of high strength, good elasticity, strong adhesion, corrosion resistance, and strong water resistance. It has a wide range of applications, but it needs to add highly volatile organic solvents during production and construction. This causes varying degrees of damage to the body of the contact perso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/61
CPCC09D175/04C09D7/61C08K2003/265C08K3/26
Inventor 薛强周小楠王驰刘钊
Owner YUZHONGQING WATERPROOF MATERIALS CO LTD
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