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Water-based pre-coated primer as well as preparation method and application of primer

A pre-primer, water-based technology, used in primers, coatings, anti-corrosion coatings, etc., can solve problems such as high VOC content and environmental pollution, achieve fast drying speed and hardness increase speed, excellent hardness, reduce pores and The effect of pores

Inactive Publication Date: 2018-04-06
HUNAN UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the urgent need for environmental protection, the reduction of VOC emissions from coatings has become the focus of attention. At present, most of the various workshop precoating primers used are solvent-based products with high VOC content, which causes great pollution to the environment.

Method used

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  • Water-based pre-coated primer as well as preparation method and application of primer
  • Water-based pre-coated primer as well as preparation method and application of primer
  • Water-based pre-coated primer as well as preparation method and application of primer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The water-based precoat primer comprises the following raw materials prepared by weight:

[0029]

[0030] The preparation steps of this embodiment are

[0031] S1. After preparing the materials, add deionized water, DMEA, 2011, 760W, PA-700, anatase titanium dioxide, precipitated barium sulfate, and carbon black to the reactor in sequence, and stir evenly at a medium speed (90-110 rpm) ;

[0032] S2. Disperse the uniformly stirred slurry at high speed (300-320 rpm) for 30 minutes, and then grind it into a sand mill to a qualified fineness.

[0033] S3, add water-based acrylic modified polyurethane dispersion, 379, 15wt% sodium nitrite aqueous solution, 4100 in the ground slurry, first medium speed (90-110 rev / min) stir evenly; Add 288 and 150 under stirring, then disperse at high speed for 30 minutes, and adjust the viscosity to get the finished product.

[0034] The water-based pre-coating primer prepared in this embodiment is sprayed on the surface of structura...

Embodiment 2

[0038] The water-based precoat primer comprises the following raw materials prepared by weight:

[0039]

[0040]

[0041] The preparation steps of this embodiment are:

[0042] S1. After preparing the materials, add deionized water, DMEA, 2011, PA-700, 130 iron red powder, and precipitated barium sulfate to the reactor in turn, and stir evenly at a medium speed (90-110 rpm);

[0043] S2. Disperse the evenly stirred slurry at high speed (300-320 rpm) for 25-35 minutes, and then grind it into a sand mill to a qualified fineness.

[0044] S3, add water-based acrylic modified polyurethane dispersion, Ruibao 60, 15wt% sodium nitrite aqueous solution, 3075, 3076A in the ground slurry, first medium speed (90-110 rpm) stir evenly; 50-60 rev / min), add 288 and 168 under stirring, then disperse at high speed for 30 minutes, and adjust the viscosity to get the finished product.

[0045] The water-based pre-coating primer prepared in this embodiment is sprayed on the surface of st...

Embodiment 3

[0050] The water-based precoat primer comprises the following raw materials prepared by weight:

[0051]

[0052] The preparation steps of this embodiment are

[0053] S1. After preparing the materials, add deionized water, DMEA, 2011, 6091, PA-700, anatase titanium dioxide, carbon black, 1250 mesh talc powder into the reactor in sequence, and stir at a medium speed (90-110 rpm) Uniform;

[0054]S2. Disperse the uniformly stirred slurry at high speed (300-320 rpm) for 30 minutes, and then grind it into a sand mill to a qualified fineness.

[0055] S3. Add water-based acrylic modified polyurethane dispersion, Ruibao 60, 15wt% sodium nitrite aqueous solution, 4100 to the ground slurry, and stir evenly at a medium speed (90-110 rpm); 60 rev / min) under stirring, add XS-83 and 168, then disperse at high speed for 30 minutes, adjust the viscosity to get the finished product.

[0056] The water-based pre-coating primer prepared in this embodiment is sprayed on the surface of st...

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Abstract

The invention discloses water-based pre-coated primer which is prepared from the following raw materials in parts by weight: 35-50 parts of water-based resin, 10-20 parts of water-based pigments, 10-20 parts of water-based body filler, 6-10 parts of water-based aids and 15-25 parts of a solvent. The invention further provides a preparation method and application of the water-based pre-coated primer. The content of volatile organic compounds in the primer disclosed by the invention is far lower than the required limited quantity of harmful substances in water-based paint in the national standard.

Description

technical field [0001] The invention relates to the technical field of primers, in particular to a water-based precoat primer, a preparation method and an application in anti-burning and welding workshops. Background technique [0002] Many large steel plates on the market must be coated with a layer of anti-rust primer before production and processing to protect them, especially in anti-burning and welding workshops. The anti-burning and welding workshop needs the steel with anti-rust primer to have a small damage area during thermal processing, and minimize the pores and pores of the weld. The Chinese patent No. 201510662197.X discloses a steel plate pre-coated quick-drying antirust primer and its preparation method. The primer includes: acrylic resin, 30wt% nitrocellulose solution, iron oxide red, flux, zinc phosphate , Precipitated barium sulfate, sericite, composite iron phosphorus powder, organic bentonite, fumed silica, defoamer, wetting and dispersing agent, levelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D5/08C09D7/61
CPCC09D175/14C08K3/04C08K3/34C08K2003/2241C08K2003/2272C08K2003/3045C09D5/002C09D5/08
Inventor 匡成杰刘骏杨针玉黄武
Owner HUNAN UNIV OF ARTS & SCI
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