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Solvent-free modified polyurethane paint and preparation method thereof

A solvent-free polyurethane and polyurethane coating technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, conductive coatings, etc., can solve the problems of high VOC substances, low solid content, poor thermal insulation and static conductivity, etc., and achieve good performance, Simple operation and easy-to-achieve effects

Inactive Publication Date: 2016-02-03
CHINA PAINT MFG CO SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, the object of the present invention is to provide a solvent-free modified polyurethane coating and its preparation method, aiming to solve the problems of low solid content, high VOC substances, poor heat insulation and static conductivity in existing oil tank inner wall coatings. And other issues

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  • Solvent-free modified polyurethane paint and preparation method thereof
  • Solvent-free modified polyurethane paint and preparation method thereof
  • Solvent-free modified polyurethane paint and preparation method thereof

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preparation example Construction

[0031] On the other hand, the present invention also provides a preparation method of the modified solvent-free polyurethane coating in the above embodiment of the present invention. The preparation method of the modified solvent-free polyurethane coating includes the following steps:

[0032] Step S01: Mixing the polyhydroxy resin, active diluent, dispersant, defoamer and anti-settling agent to prepare the first mixture;

[0033] Step S02: adding fillers, coloring pigments, anti-rust pigments and conductive polyaniline to the first mixture for homogenization processing to prepare a second mixture;

[0034] Step S03: Add conductive mica powder to the second mixture and mix to prepare a third mixture;

[0035] Step S04: adding hollow microbeads and ceramic microbeads to the third mixture for homogenization, and preparing a modified solvent-free polyurethane coating.

[0036] Among them, in the above step S01, the mixing equipment is not limited, it can be a dispersion cylinder, and the ...

Embodiment 1

[0041] The modified solvent-free polyurethane coating according to the above-mentioned material weight component distribution ratio and the above-mentioned preparation method is as follows: 45 parts of polyhydroxy resin, 5 parts of reactive diluent, 0.5 part of dispersant, 0.2 part of defoamer, 1.3 parts of anti-settling agent, 8 parts of fillers, 4 parts of coloring pigments, 6 parts of anti-rust pigments, 2 parts of conductive polyaniline, 12 parts of conductive mica, 6 parts of hollow microbeads, and 10 parts of ceramic microbeads.

[0042] Among them, the anti-settling agent is polyamide wax powder, the filler is a combination of talc powder and mica powder, 4 parts each, and the anti-rust pigment is zinc phosphate.

[0043] In step S01, the mixing equipment is a dispersing cylinder, and the dispersing time is 10 minutes at room temperature;

[0044] In step S02, the mixing equipment is a dispersion cylinder, the mixing temperature is 65°C, and the dispersion time is 15 minutes; ...

Embodiment 2

[0049] The modified solvent-free polyurethane coating according to the above-mentioned material weight component distribution ratio and the above-mentioned preparation method is as follows: 48 parts of polyhydroxy resin, 7 parts of reactive diluent, 0.6 part of dispersant, 0.3 part of defoamer, 1.1 parts of anti-settling agent, 3 parts of fillers, 5 parts of coloring pigments, 8 parts of anti-rust pigments, 3 parts of conductive polyaniline, 10 parts of conductive mica, 5 parts of hollow beads and 9 parts of ceramic beads.

[0050] Among them, the anti-settling agent is polyamide wax powder, the filler is talc powder, and the anti-rust pigment is aluminum tripolyphosphate.

[0051] In step S01, the mixing equipment is a dispersing tank, and the dispersing time is 13 minutes at room temperature;

[0052] In step S02, the mixing equipment is a dispersion cylinder, the mixing temperature is 65°C, and the dispersion time is 18 minutes;

[0053] In step S03, the mixing equipment is a dispe...

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Abstract

The invention relates to the technical field of paint, and provides a solvent-free modified polyurethane paint and a preparation method thereof. The solvent-free modified polyurethane paint comprises the following components by a weight ratio: 45-55 parts of polyhydroxy resin, 5-10 parts of active diluents, 0.5-1 part of a dispersant, 0.2-0.4 parts of an antifoaming agent, 1-1.6 parts of an anti-settling agent, 4-6 parts of a coloring pigment, 3-8 parts of a filling material, 6-8 parts of an rust-resisting pigment, 2-4 parts of conductive polyaniline, 10-12 parts of conductive mica, 3-6 parts of hollow glass beads and 5-10 parts of ceramic beads. The solvent-free modified polyurethane paint has good performances of sagging resistance, drying property, clunging, salt fog resistance, acid-base resistance, heat insulation, electrical conductivity and non corrosibility; construction operation is easy, and the solvent-free modified polyurethane paint is suitable for an anticorrosion coating used for inner walls of a petroleum storage tank.

Description

Technical field [0001] The invention relates to the technical field of coatings, in particular to a solvent-free modified polyurethane coating and a preparation method thereof. Background technique [0002] With the rapid development of my country's petrochemical construction, the field of petrochemical equipment anti-corrosion has put forward higher requirements for the anti-corrosion of the inner wall of oil storage tanks and its technology. "Environmental protection, safety, performance and cost" have gradually become the development trend of this industry. [0003] At present, there are many similar coatings used for anti-corrosion in oil storage tanks on the market, but most of the problems are that the coatings have low solid content and high VOC (volatile organic compounds), which brings many safety hazards to the construction of oil tanks. ; At the same time, oil has the characteristics of high temperature sensitivity, and it is prone to flammable and explosive accidents in...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/08C09D5/24C09D7/12
Inventor 陈云王茂征易明建
Owner CHINA PAINT MFG CO SHENZHEN
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