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Environment-friendly high-wear-resistant water-based varnish and preparation method thereof

A water-based varnish and high wear-resistant technology, which is applied to biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve the problem that the wear resistance cannot achieve the desired effect, the wear resistance of water-based varnishes decreases, Wax emulsion particles fall off and other problems, to achieve low production cost, good anti-blocking performance, and good cohesive force

Active Publication Date: 2019-08-30
DONGGUAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In traditional water-based varnish, the binding force of the coating film to the wax emulsion particles is too small or too rigid, which will cause the wax emulsion particles to fall off during the friction process, which will eventually lead to a decrease in the wear resistance of the water-based varnish. Adding too much wax emulsion will also cause Gloss reduction
Because the wear resistance of traditional water and oil can not achieve the ideal effect, while taking into account the wear resistance, the gloss is not good, resulting in the reduction of post-press processing suitability
[0004] Chinese patent CN104946115A discloses a fast-drying wear-resistant water-based varnish and its preparation method, using silicic acid alcohol wear-resistant resin, water-based polyurethane resin and water-based paint wear-resistant accelerator, etc. to prepare wear-resistant water-based varnish, although The wear resistance has been improved, but the production cost will increase accordingly

Method used

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  • Environment-friendly high-wear-resistant water-based varnish and preparation method thereof
  • Environment-friendly high-wear-resistant water-based varnish and preparation method thereof
  • Environment-friendly high-wear-resistant water-based varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An environment-friendly and highly wear-resistant water-based varnish, comprising the following raw materials in parts by weight:

[0027]

[0028] The preparation method of the modified polyurethane emulsion is as follows: adding the initiator and maleic anhydride to the aqueous polyurethane emulsion, dispersing with a homogenizer at a temperature of 80° C. for 1.5 hours, and filtering to obtain a modified polyurethane emulsion; wherein, the initiator is added The amount is 60% of the quality of the water-based polyurethane emulsion, and the amount of maleic anhydride added is 30% of the quality of the water-based polyurethane emulsion.

[0029] The preparation method of the modified styrene-acrylic emulsion is as follows: dissolving the emulsifier in deionized water to obtain a pre-reaction solution; taking part of the pre-reaction solution and adding acrylate monomers to high-speed stirring for 20 minutes to obtain a reaction solution A; Mix the reaction solution ...

Embodiment 2

[0038] An environment-friendly and highly wear-resistant water-based varnish, comprising the following raw materials in parts by weight:

[0039]

[0040] The preparation method of the modified polyurethane emulsion is as follows: adding the initiator and maleic anhydride to the water-based polyurethane emulsion, using a homogenizer to disperse for 1.2 hours at a temperature of 82° C., and filtering to obtain a modified polyurethane emulsion; wherein, the initiator is added The amount is 65% of the quality of the water-based polyurethane emulsion, and the amount of maleic anhydride added is 35% of the quality of the water-based polyurethane emulsion.

[0041] The preparation method of the modified styrene-acrylic emulsion is as follows: dissolving the emulsifier in deionized water to obtain a pre-reaction solution; taking part of the pre-reaction solution and adding acrylate monomer to high-speed stirring for 25 minutes to obtain a reaction solution A; Mix the reaction solu...

Embodiment 3

[0050] An environment-friendly and highly wear-resistant water-based varnish, comprising the following raw materials in parts by weight:

[0051]

[0052] The preparation method of the modified polyurethane emulsion is as follows: adding the initiator and maleic anhydride to the water-based polyurethane emulsion, using a homogenizer to disperse for 1 hour at a temperature of 85° C., and filtering to obtain the modified polyurethane emulsion; wherein, the amount of the initiator added It is 70% of the quality of the water-based polyurethane emulsion, and the addition of maleic anhydride is 40% of the quality of the water-based polyurethane emulsion.

[0053] The preparation method of the modified styrene-acrylic emulsion is as follows: dissolving the emulsifier in deionized water to obtain a pre-reaction solution; taking part of the pre-reaction solution and adding acrylate monomers to high-speed stirring for 30 minutes to obtain a reaction solution A; The reaction solution ...

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Abstract

The invention relates to the technical field of varnish, and specifically relates to environment-friendly high-wear-resistant water-based varnish and a preparation method thereof. The environment-friendly high-wear-resistant water-based varnish is prepared from the following raw materials in parts by weight: 20-40 parts of modified polyurethane emulsion, 15-35 parts of modified styrene-acrylic emulsion, 2-6 parts of wax emulsion, 3-5 parts of a dispersant, 2-4 parts of a leveling agent, 1-2 parts of an antifoaming agent, 0.5-1.5 parts of a film-forming assistant, and 20-40 parts of deionized water. The environment-friendly high-wear-resistant water-based varnish involved in the invention has relatively high wear resistance, has the advantages of high gloss, good flexibility, fast drying and good anti-blocking property at the same time, and also has good film forming property and compatibility and excellent substrate adhesion performance; the gloss is high; the adhesion stress is good;the stain resistance is very strong; the resistance to water, acid and alkali is good; the anti-aging effect is achieved; no toxin and abnormal taste exist; the low-carbon and environment-friendly effect is achieved; the cost is low.

Description

technical field [0001] The invention relates to the technical field of varnish, in particular to an environment-friendly and highly wear-resistant water-based varnish and a preparation method thereof. Background technique [0002] The wear resistance of water-based varnish is mainly provided by the wax emulsion. The particle size of the wax emulsion is on the same order of magnitude as the thickness of the coating film. During the film formation process, the floating effect of wax is generated, so that the wax floats to the top layer of the coating film and is wrapped with varnish. In the resin, and partially exposed on the outside of the coating film; when the surface of the coating film is subjected to external force, due to the sliding effect of the wax protective layer, the damage of the external force to the coating film surface is weakened. [0003] In traditional water-based varnish, the binding force of the coating film to the wax emulsion particles is too small or t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D133/20C09D5/16C09D7/63C09D7/65
CPCC08L2201/08C08L2205/025C08L2205/035C09D5/1687C09D175/14C08L33/20C08L23/06C08L83/04C08K5/098
Inventor 张彦粉邹洋李娜许婷卓秋婷
Owner DONGGUAN POLYTECHNIC
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