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Solvent-free single-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof, one-component technology, applied in the field of coatings, can solve problems such as poor sag resistance at high temperature, and achieve the effects of strong adhesion, improved sag resistance and bond strength, and good sag resistance.

Active Publication Date: 2022-05-06
HEBEI YUYANGZELI WATERPROOF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a solvent-free one-component polyurethane waterproof coating and its preparation method, which solves the problem of poor high temperature anti-sagging of polyurethane waterproof coatings in the prior art The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation materials: 20 parts of polyether diol, 3 parts of polyether triol, 5 parts of carbodiimide modified MDI, 30 parts of talcum powder, 5 parts of imine latent curing agent, 15 parts of low viscosity plasticizer, 3 parts of rheology additive, 0.1 part of FEP micropowder, 0.1 part of modified α-zirconium phosphate, 0.05 part of catalyst, 0.2 part of Additive Ti dehydrating agent;

[0030] The rheological additive is a mixture of basic calcium sulfonate gel, PVC paste resin, and sodium fluozirconate, and the mass ratio of the three is 5:3:1.

[0031] Among them, the low-viscosity plasticizer is a mixture of bis(2-ethylhexyl)cyclohexane-1,2-dicarboxylate and bis(2-propylheptyl)phthalate (DPHP). The ratio is 1:1.

[0032] Wherein the polyether diol molecular weight is 2000, and the polyether trihydric alcohol molecular weight is 4800.

[0033] Preparation:

[0034] S1. After cutting one-third of the low-viscosity plasticizer and rheological additive, add dehydrat...

Embodiment 2

[0039] Preparation: 30 parts of polyether diol, 10 parts of polyether triol, 10 parts of carbodiimide modified MDI, 55 parts of talcum powder, 10 parts of imine latent curing agent, 30 parts of low viscosity plasticizer, 10 parts of rheology additive, 0.5 part of FEP micropowder, 0.5 part of modified α-zirconium phosphate, 2 parts of catalyst, 1 part of Additive OF dehydrating agent;

[0040] The rheological additive is a mixture of activated nano-kaolin, PVC paste resin, and modified urea, and the mass ratio of the three is 5:2:1.

[0041] Among them, the low-viscosity plasticizer is a mixture of chlorinated palm oil methyl ester and alkylbenzene sulfonate, and the mass ratio of the two is 1:1.

[0042] Wherein the polyether diol molecular weight is 2000, and the polyether trihydric alcohol molecular weight is 4800.

[0043] Preparation:

[0044] S1. After cutting one-third of the low-viscosity plasticizer and rheological additive, add dehydrating agent and stir for later u...

Embodiment 3

[0049] Material preparation: 25 parts of polyether diol, 6 parts of polyether triol, 8 parts of carbodiimide modified MDI, 40 parts of talcum powder, 8 parts of imine latent curing agent, 20 parts of low viscosity plasticizer, 5 parts of rheology additive, 0.3 part of PTFE micropowder, 0.3 part of modified α-zirconium phosphate, 1 part of catalyst, 0.6 part of Additive Ti dehydrating agent;

[0050] The rheological additive is a mixture of basic calcium sulfonate gel, PVC paste resin, and sodium fluorozirconate, and the mass ratio of the three is 6:3:1.

[0051] Among them, the low-viscosity plasticizer is a mixture of bis(2-ethylhexyl)cyclohexane-1,2-dicarboxylate and bis(2-propylheptyl)phthalate (DPHP). The ratio is 1:1.

[0052] Wherein the polyether diol molecular weight is 2000, and the polyether trihydric alcohol molecular weight is 4800.

[0053] Preparation:

[0054] S1. After cutting one-third of the low-viscosity plasticizer and rheological additive, add dehydrating...

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Abstract

The invention relates to the technical field of coatings, and provides a solvent-free single-component polyurethane waterproof coating which comprises the following components in parts by weight: 20-30 parts of polyether glycol, 3-10 parts of polyether triol, 5-10 parts of liquefied MDI, 30-55 parts of talcum powder, 5-10 parts of a latent curing agent, 15-30 parts of a low-viscosity plasticizer and 3-10 parts of a rheological additive. The high-temperature-resistant water-based paint comprises the following components in parts by weight: 0.1-0.5 part of fluorine-containing polymer micro powder, 0.1-0.5 part of zirconium phosphate, 0.05-2 parts of a catalyst and 0.2-1 part According to the technical scheme, the problem of poor high-temperature sagging resistance of the polyurethane waterproof coating in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a solvent-free one-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] In the 1960s, a new type of waterproof coating appeared in Europe, America and Japan to overcome the shortcomings of the traditional asphalt-based waterproof coating and waterproof membrane. Polyurethane waterproof coatings are obtained by polymerization of excess isocyanate monomers and polyether polyols to form prepolymers containing residual isocyanate groups, with catalysts, crosslinking agents, pigments, fillers, solvents, etc., and processed through mixing and other processes waterproof coating. Polyurethane waterproof coating has good extensibility and adhesion. [0003] According to the different components of the system, polyurethane waterproof coatings can be divided into two-component and one-component polyurethane waterproof coatings, which a...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D127/06C09D7/62C09D7/61C09D7/63C09D7/65
CPCC09D175/08C09D7/62C09D7/61C09D7/63C09D7/65C09D5/18C08K2003/328C08L2201/08C08L27/06C08K9/04C08K3/32C08K3/24C08K5/42
Inventor 李建芳田继斌谢彦姣曲学平张晓明郭岩包毓含
Owner HEBEI YUYANGZELI WATERPROOF MATERIAL
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