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High-durability waterborne polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and durable water-based technology, applied in the field of coatings, can solve problems such as poor durability, and achieve the effects of improving aging resistance, improving aging resistance, and avoiding agglomeration

Pending Publication Date: 2022-06-28
HEBEI YUYANGZELI WATERPROOF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a high-durability water-based polyurethane waterproof coating and a preparation method thereof, which solves the problem of poor durability of the nano-material modified water-based polyurethane waterproof coating in the prior art

Method used

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  • High-durability waterborne polyurethane waterproof coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] A high-durability water-based polyurethane waterproof coating, comprising A component and B component in a mass ratio of 10:3, wherein,

[0027] Component A includes the following components by mass: 35 parts of Bayhydrol A 2542 water-based hydroxyacrylate dispersion, 10 parts of hydroxycitric acid modified nano-zinc oxide, 6 parts of pigment, 2 parts of rheology aid byk-410, dispersion 7 parts of BYK 190, 1 part of polyether defoamer, 0.5 part of ultraviolet absorber UV 329, and 33 parts of water;

[0028] Component B includes the following components by mass: 15 parts of isophorone diisocyanate and 12 parts of alcohol ester;

[0029] Among them, the preparation method of hydroxycitric acid modified nano-zinc oxide: nano-zinc oxide and hydroxycitric acid are mixed in N'N-dimethylformamide, ultrasonically dispersed uniformly, and the temperature is controlled at 80-85 °C for 6 hours, and centrifugation is dried. That is, the mass ratio of nano-zinc oxide to hydroxycitr...

Embodiment 2

[0032] A high-durability water-based polyurethane waterproof coating, comprising A component and B component in a mass ratio of 10:3, wherein,

[0033] Component A includes the following components by mass: 40 parts of Bayhydrol A 2542 water-based hydroxyacrylate dispersion, 15 parts of hydroxycitric acid modified nano-zinc oxide, 8 parts of pigment, 2 parts of rheology aid byk-410, dispersed 8 parts of BYK 190, 2 parts of polyether defoamer, 1 part of ultraviolet absorber UV 329, and 35 parts of water;

[0034] Component B includes the following components by mass: 16 parts of isophorone diisocyanate and 12 parts of alcohol ester;

[0035] Among them, the preparation method of hydroxycitric acid modified nano-zinc oxide: mixing nano-zinc oxide and hydroxycitric acid in N'N-dimethylformamide, ultrasonically dispersing uniformly, controlling the temperature at 85-90 ° C for 7 hours, and centrifuging drying That is, the mass ratio of nano-zinc oxide to hydroxycitric acid and N'...

Embodiment 3

[0038] A high-durability water-based polyurethane waterproof coating, comprising A component and B component in a mass ratio of 10:3, wherein,

[0039] Component A includes the following components by mass: 30 parts of Bayhydrol A 2542 water-based hydroxyacrylate dispersion, 12 parts of hydroxycitric acid modified nano-zinc oxide, 5 parts of pigment, 1 part of rheology aid byk-410, dispersion 6 parts of BYK 190, 1 part of polyether defoamer, 0.5 part of ultraviolet absorber UV 327, and 30 parts of water;

[0040] Component B includes the following components by mass: 11 parts of isophorone diisocyanate and 12 parts of alcohol ester;

[0041] Among them, the preparation method of hydroxycitric acid modified nano-zinc oxide: mixing nano-zinc oxide and hydroxycitric acid in N'N-dimethylformamide, ultrasonically dispersing uniformly, controlling the temperature at 95-100 ° C for 5 hours, and centrifuging drying That is, the mass ratio of nano-zinc oxide to hydroxycitric acid and ...

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Abstract

The invention relates to the technical field of coatings, and provides a high-durability waterborne polyurethane waterproof coating which comprises a component A and a component B, the component A is prepared from the following components in parts by mass: 30 to 40 parts of water-based hydroxyl acrylate dispersion, 10 to 15 parts of hydroxyl citric acid modified nano zinc oxide, 5 to 8 parts of pigment, 1 to 2 parts of rheological additive, 6 to 8 parts of dispersing agent, 1 to 2 parts of defoaming agent, 0.5 to 1 part of ultraviolet absorbent and 30 to 35 parts of water; the component B is prepared from the following components in parts by mass: 10 to 20 parts of isophorone diisocyanate and 4 to 8 parts of film forming agent; the mass ratio of the component A to the component B is 10: (2-3). Through the technical scheme, the problem of poor durability of the nano material modified waterborne 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 high-durability water-based polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane coating is a kind of organic compound containing isocyanate and hydroxyl group obtained by addition and polymerization. It is composed of soft segment and hard segment alternately. The polymer containing amino acid methyl ester is generally called repeating unit, which has excellent solvent resistance, resistance to The advantages of chemical properties, weather resistance and highly tunable properties have given them a place in the coatings industry, and in some applications they even dominate the market. [0003] Waterborne polyurethane coating is a new type of polyurethane system in which water is used instead of organic solvent as the dispersion medium, and hydrophilic groups are introduced into the side chain or main chain of the polyure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/62
CPCC09D175/04C09D7/62C08K2003/2296C08K2201/011C08K3/22C08K9/04
Inventor 田继斌谢彦姣曲学平张晓明郭岩包毓含李建芳
Owner HEBEI YUYANGZELI WATERPROOF MATERIAL