Multicolor low-gloss water-based paint primer-finish composition for passenger train

A technology for railway passenger cars and water-based coatings, used in anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc. The effect of reducing the content of volatile organic compounds, stabilizing the gloss of the paint film, and eliminating potential safety hazards

Active Publication Date: 2021-08-03
SHANXI HUABAO NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual method is to choose a water-based acrylic resin with a high hydroxyl value, and add a large amount of matting powder to reduce the gloss of the top coat. However, the disadvantage of this method is that the gloss stability of the paint film is not good, and the gloss of the original design may be lost. Risk, on the other hand, matting powder is more expensive, no cost advantage

Method used

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  • Multicolor low-gloss water-based paint primer-finish composition for passenger train
  • Multicolor low-gloss water-based paint primer-finish composition for passenger train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] To prepare water-based acrylic polyurethane component A, feed 100 kg in total, and add 12.64 kg of deionized and 11 kg of hydroxyl-containing water-based acrylic resin sk6480, 0.05 kg of defoamer Foamex8030, 0.1kg of dispersant Zeta Sperse 3100, 3.0kg of wetting agent TRITON X-405, after adding, stir for 10min to mix evenly, slowly add 0.1kg of rheology additive RM-8W, increase the speed to 600r / min and stir for 15min, then add 3.5kg of rutile titanium dioxide, 2kg of carbon black, and then increase the speed to 800r / min for high-speed dispersion and stirring for 20 minutes to obtain a pre-dispersed slurry; use a sand mill to grind the pre-dispersed slurry to a fineness of less than 15 μm to obtain a finely ground slurry; Stir the ground slurry at 600r / min, add 44kg hydroxyl-containing water-based acrylic resin sk6480, 15kg self-dulling water-based polyurethane resin PU-210, 0.05kg defoamer Foamex8030, 5kg co-solvent, 0.2kg leveling agent HY5030, 3. 16kg of deionized wa...

Embodiment 2

[0057] To prepare water-based acrylic polyurethane component A, feed 100 kg in total, and add 8.96 kg of deionized and 12 kg of hydroxyl-containing water-based acrylic resin GS359, 0.1 kg of defoamer Foamex3062, 0.2kg of dispersant Tego Dispers 755W, 2.5kg of wetting agent TRITON X-405, after adding, stir for 12min to mix evenly, slowly add 0.2kg of rheology additive RM-12W, increase the speed to 700r / min and stir for 15min, then add 5kg of rutile titanium dioxide, then increase the rotating speed to 900r / min for high-speed dispersion and stirring for 25 minutes to obtain a pre-dispersed slurry; use a sand mill to grind the pre-dispersed slurry to a fineness of less than 15 μm to obtain a finely ground slurry; Under stirring at 700r / min, add 48kg hydroxyl-containing water-based acrylic resin GS359, 10kg self-dulling water-based polyurethane resin A-20802, 0.1kg defoamer Foamex3062, 4kg co-solvent, 0.4kg leveling agent HY5030, 2.24kg deionized water , Stir for 13 minutes after ...

Embodiment 3

[0062] To prepare water-based acrylic polyurethane component A, feed 100 kg in total, and add 9.04 kg of deionized, 12 kg of hydroxyl-containing water-based acrylic resin sk6480, 0.15 kg of defoamer Foamex8030, 0.3kg dispersant PX4585, 3.0kg wetting agent TRITON X-405, after adding, stir for 15min to mix evenly, slowly add 0.2kg rheological additive SCT-275, increase the speed to 800r / min and stir for 20min, then add 9kg rutile Type titanium dioxide, 1kg carbon black, and then increase the rotating speed to 1000r / min high-speed dispersion and stirring for 30 minutes to obtain a pre-dispersed slurry; use a sand mill to grind the pre-dispersed slurry to a fineness of less than 15 μm to obtain a finely ground slurry; Stir the slurry at 800r / min, add 48kg hydroxyl-containing water-based acrylic resin sk6480, 10kg self-dulling water-based polyurethane resin PU-210, 0.15kg defoamer Foamex8030, 4kg co-solvent, 0.4kg leveling agent HY5030, 2.26kg For ionized water, stir for 15 minutes...

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Abstract

The invention discloses a multicolor low-gloss water-based paint primer-finish paint composition for a passenger train. The multicolor low-gloss water-based paint primer-finish paint composition comprises a water-based acrylic polyurethane finish and a water-based epoxy primer, wherein the water-based acrylic polyurethane finish adopts hydroxyl-containing water-based acrylic resin, self-extinction water-based polyurethane resin and a hydrophilic polyisocyanate curing agent as film-forming substances and employs pigment and water-based organic color paste to compositely adjust the color of the paint; and the waterborne epoxy primer provides adhesive force with a metal substrate. The obtained water-based paint composition has the characteristics of low VOC, environmental friendliness, non-combustibility, non-explosion, safety and reliability; and a composite paint film formed by matching the water-based acrylic polyurethane finish and the water-based epoxy primer has the advantages of rich and diversified colors, low gloss, high hardness, good water resistance, good corrosion resistance and good weather resistance, and the comprehensive performance of the composite paint film meets the technical requirements of Q / CR 581-2017 on a solid-color finish-primer composite coating.

Description

technical field [0001] The invention relates to a multi-color low-gloss water-based paint primer and topcoat composition for railway passenger cars, and belongs to the technical field of water-based paints. Background technique [0002] In recent years, the state has vigorously advocated and promoted the use of environment-friendly products. Under the background of the green transformation strategy proposed by CRRC Group to apply environment-friendly coatings represented by water-based coatings step by step on the surface of trucks, locomotives and motor vehicles, The use of water-based coatings on railway passenger cars and locomotives is increasing year by year. The 160km / h power concentrated Fuxing EMU developed by a subsidiary of CRRC puts forward specific requirements for the protection and decoration of the composite coating and topcoat on the outer surface of the car body. The coating's water resistance, salt spray resistance, resistance to artificial climate acceler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/20C09D7/61C09D163/00B05D1/38B05D3/02B05D3/04B05D7/14B05D7/16
CPCC09D175/04C09D5/08C09D7/20C09D7/61C09D163/00B05D7/14B05D7/16B05D7/587B05D1/38B05D3/0406B05D3/0254C08K2003/2241C08K2003/2272C08K2003/328C08K2003/327C08L2205/025C08L2201/08B05D2504/00B05D2503/00C08L75/04C08K3/22C08K3/04C08K3/34C08K3/32C08K3/36B05D2420/01B05D2420/02B05D2425/01
Inventor 韩连山孙锋郭泽方田计青
Owner SHANXI HUABAO NEW MATERIALS CO LTD
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