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Anti-cracking waterborne paint

A water-based coating and modification technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve problems that are difficult to meet the needs of daily use, and achieve the effect of increasing coating adhesion and corrosion resistance, increasing cohesiveness, and increasing toughness

Inactive Publication Date: 2018-07-31
绩溪县上庄老胡开文墨厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention has good toughness, impact resistance, crack resistance and cohesiveness, but the actual drying time of the invention is 9.5 hours, and the surface drying time is 1 hour, which is difficult to meet the needs of daily use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 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-100, 0.15 parts of defoamer, 0.3 parts of wetting agent wet265, 0.3 parts of sodium carboxymethylcellulose, γ-(2,3-epoxypropoxy) 0.7 parts of propyltrimethoxysilane, 0.3 parts of fungicide, 14 parts of water, 2 parts of ethanol.

Embodiment 2

[0023] 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-100.2 parts, 0.1 parts of polysiloxane defoamer, 0.4 parts 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, and 5 parts of ethanol;

[0024] 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 he...

Embodiment 3

[0026] 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 parts of emulsifier OP-100, 0.2 parts of polysiloxane defoamer, 0.2 parts 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, and 5 parts of ethanol;

[0027] 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 preserv...

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Abstract

The invention relates to the technical field of paint, and particularly relates to anti-cracking waterborne paint, which is prepared from the following raw materials in parts by weight: 60 to 80 partsof modified polyurethane emulsion, 20 to 30 parts of acrylic emulsion, 15 to 25 parts of pigment, 10 to 20 parts of filler, 3 to 5 parts of texanol, 4 to 5 parts of sodium dodecyl sulfonate, 0.2 to 0.4 part of flatting agent, 0.1 to 0.2 part of emulsifier OP-10 (Alkylphenol Polyoxyethylene ether-10), 0.1 to 0.2 part of antifoaming agent, 0.2 to 0.4 part of wetting agent wet265, 0.2 to 0.4 part ofsodium carboxymethyl cellulose, 0.6 to 0.8 part of gamma-(2,3-epoxypropoxy)propyl trimethoxysilane, 0.2 to 0.4 part of mildew preventive, 10 to 18 parts of water and 2 to 5 parts of ethanol. The harddrying time of the anti-cracking waterborne paint is controlled within 6.5h.

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. [0003] The applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D133/00C09D5/08C09D7/62C09D7/63C09D7/65C08G18/32C08G18/34C08G18/48C08G18/66C08K3/04C08K9/06
Inventor 胡翠霞
Owner 绩溪县上庄老胡开文墨厂
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