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Crack-resistant waterborne coating

A water-based coating and modification technology, applied in the field of coatings, can solve the problems of low toughness and adhesion, and achieve the effects of increasing dispersibility, increasing film-forming properties, and increasing impact toughness

Active Publication Date: 2017-02-22
安徽琮玥工程项目管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complicated repair process and long construction period, it is best to complete the repair work at one time. This requires the coating to have good toughness, impact resistance and bonding performance to avoid repeated repairs. However, the toughness of the paint currently used for ancient building repair and adhesion is not too high, therefore, a new coating needs to be provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An anti-cracking water-based paint, its raw materials include by weight: 70 parts of modified polyurethane emulsion, 25 parts of acrylic emulsion, 20 parts of pigment, 15 parts of filler, 4 parts of dodecyl alcohol ester, 4.5 parts of sodium lauryl sulfate 0.3 parts of leveling agent, 0.15 parts of emulsifier OP-10, 0.15 parts of defoamer, 0.3 parts of wetting agent wet265, 0.3 parts of sodium carboxymethylcellulose, γ-(2,3-glycidyloxy) 0.7 parts of propyltrimethoxysilane, 0.3 parts of fungicide, 14 parts of water.

Embodiment 2

[0022] An anti-cracking water-based coating, its raw materials include by weight: 60 parts of modified polyurethane emulsion, 20 parts of acrylic emulsion with a solid content of 30wt%, 25 parts of pigment, 20 parts of 600 mesh organic montmorillonite, dodecyl alcohol ester 3 parts, 5 parts of sodium dodecyl sulfonate, 0.2 parts of leveling agent, 0.2 parts of emulsifier OP-10, 0.1 part of polysiloxane defoamer, 0.4 part of wetting agent wet265, carboxymethyl cellulose 0.2 parts of sodium, 0.8 parts of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.2 parts of antifungal agent, 18 parts of water;

[0023] Wherein, in the preparation process of the modified polyurethane emulsion, N,N-dimethylformamide, isophorone diisocyanate, and dimethylol propionic acid are sequentially added to polytetrahydrofuran diol 2000 in a nitrogen atmosphere, Heat up to 65°C, heat and stir for 35 minutes, add dibutyltin laurate and modified graphene oxide, continue heat preservation and stirring for 2 ...

Embodiment 3

[0025] An anti-cracking water-based paint, its raw materials include by weight: 80 parts of modified polyurethane emulsion, 30 parts of acrylic emulsion with a solid content of 20wt%, 15 parts of pigment, 10 parts of 800 mesh organic montmorillonite, dodecyl alcohol ester 5 parts, 4 parts of sodium dodecyl sulfonate, 0.4 parts of leveling agent, 0.1 part of emulsifier OP-10, 0.2 parts of polysiloxane defoamer, 0.2 part of wetting agent wet265, carboxymethyl cellulose 0.4 parts of sodium, 0.6 parts of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.4 parts of antifungal agent, 10 parts of water;

[0026] Wherein, in the preparation process of the modified polyurethane emulsion, N,N-dimethylformamide, isophorone diisocyanate, and dimethylol propionic acid are sequentially added to polytetrahydrofuran diol 2000 in a nitrogen atmosphere, Heat up to 75°C, heat and stir for 25 minutes, add dibutyltin laurate and modified graphene oxide, continue heat preservation and stirring for 3 ho...

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Abstract

The invention discloses a crack-resistant waterborne coating which comprises the following raw materials in parts by weight: 60-80 parts of a modified polyurethane emulsion, 20-30 parts of an acrylic emulsion, 15-25 parts of a pigment, 10-20 parts of a filler, 3-5 parts of 2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate), 4-5 parts of sodium dodecyl sulfate, 0.2-0.4 part of a flatting agent, 0.1-0.2 part of an emulsifying agent OP-10, 0.1-0.2 part of a de-foaming agent, 0.2-0.4 part of a wetting agent 265, 0.2-0.4 part of sodium carboxymethyl cellulose, 0.6-0.8 part of gamma-(2,3-epoxypropoxy) mercaptopropyltrimethoxysilane, 0.2-0.4 part of a mildew preventive and 10-18 parts of water. The crack-resistant waterborne coating disclosed by the invention has good toughness, impact performance, crack resistance and bonding performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-cracking water-based coating. Background technique [0002] Ancient buildings have extremely high historical, scientific and artistic value. If they are destroyed, they cannot exist anymore; and ancient buildings are old and will inevitably be damaged by nature or man-made. Therefore, we need to repair and maintain ancient buildings . Coatings are often used in the process of repairing ancient building rooms, door walls, inner and outer eaves, palms, floors, and walls. Due to the complicated repair process and long construction period, it is best to complete the repair work at one time, which requires the coating to have good toughness, impact resistance and bonding performance to avoid repeated repairs, but the toughness of the paint currently used for ancient building repair And adhesion is not too high, therefore, need to provide a new coating. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D133/00C09D7/12C08G18/08C08G18/32C08G18/34C08G18/48C08G18/66
CPCC08G18/0823C08G18/3206C08G18/348C08G18/4854C08G18/6692C08L2205/035C09D7/61C09D7/62C09D7/65C09D175/08C08L33/00C08L1/286C08K13/06C08K3/346C08K9/06C08K3/04
Inventor 樊世新
Owner 安徽琮玥工程项目管理有限公司
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