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Thick-coating waterborne epoxy finish paint for rail transit vehicles and preparation method thereof

A rail transit vehicle, thick coating technology, applied in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of paint film wear and tear, foreign body friction and oil erosion, paint film not resistant to stone attack, etc. Excellent water resistance and acid and alkali resistance, good impact resistance, and the effect of improving anti-corrosion performance

Active Publication Date: 2020-03-17
株洲市九华新材料涂装实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thick coating performance of the existing ordinary acrylic polyurethane topcoat is poor, and one coating can only reach 60um, and the paint film is not resistant to stone chipping
After the vehicle has been in operation for a long time, the frame, axle and hub of the vehicle are vulnerable to stone impact, foreign matter friction and oil corrosion, and there is a risk of paint film wear and tear, resulting in rust on the frame, axle and hub, which affects the operation of the vehicle. There is a huge security risk
[0003] At present, there has been research on thick-coated water-based acrylic hybrid epoxy floor paint, but it is used for epoxy floor paint. At present, there is no research on thick-coated water-based epoxy topcoat for rail transit vehicles.

Method used

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  • Thick-coating waterborne epoxy finish paint for rail transit vehicles and preparation method thereof
  • Thick-coating waterborne epoxy finish paint for rail transit vehicles and preparation method thereof
  • Thick-coating waterborne epoxy finish paint for rail transit vehicles and preparation method thereof

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Effect test

Embodiment 1

[0040] A kind of preparation method of thick coating type waterborne epoxy topcoat for rail transit vehicle, comprises the following steps:

[0041] (1) Preparation of paint: Weigh the raw materials that make up the paint according to the weight ratio, pour the acrylic hybrid epoxy resin into the container vat, and place the container vat under the disperser to disperse, and adjust the rotating speed to 600 rpm / minute, and then add dispersant, barium sulfate, pigment, fumed silica, and polysiloxane defoamer in turn under stirring. After the feeding is completed, adjust the speed of the disperser to 1000 rpm and stir for 25 minutes to obtain the pre-dispersed slurry; then pump the pre-dispersed slurry into the sand mill with a diaphragm pump, and discharge the material when it is ground to a fineness of ≤20 μm. Add leveling agent, deionized water, and thickener in sequence, adjust the speed of the disperser to 1000 rpm, stir for 20 minutes, filter with a 120-mesh filter to re...

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Abstract

The invention discloses a thick-coating waterborne epoxy finish paint for rail transit vehicles. The thick-coating waterborne epoxy finish paint comprises a paint vehicle and a curing agent. Specifically, the paint vehicle comprises the following raw materials by weight: 45-55 parts of water-based acrylic acid hybrid epoxy resin, 15-20 parts of barium sulfate, 0.2-0.4 part of fumed silica, 2-2.5 parts of a high molecular weight block copolymer dispersant, 19-22 parts of a pigment, 0.5-0.6 part of a polysiloxane defoamer, 0.3-0.5 part of a leveling agent, 2.0-3.0 parts of a thickener and the balance deionized water. The invention also discloses a preparation method of the paint. The overall comprehensive performance of the paint prepared according to the invention can meet the Q / CR 546.4-2016 standard requirements of China State Railway Group Co., Ltd.

Description

technical field [0001] The invention relates to the field of thick-coated epoxy topcoat, in particular to a thick-coated water-based epoxy topcoat for rail transit vehicles and a preparation method thereof. Background technique [0002] With the development of my country's high-speed rail technology and the country's vigorous investment in railway construction, rolling stock and high-speed rail trains are used more and more in different regions and in different harsh environments, and the requirements for the complete performance of vehicles are also increasing. The thick coating performance of the existing ordinary acrylic polyurethane topcoat is poor, and one coating can only reach 60um, and the paint film is not resistant to stone chipping. After the vehicle has been in operation for a long time, the frame, axle and hub of the vehicle are vulnerable to stone impact, foreign matter friction and oil corrosion, and there is a risk of paint film wear and tear, resulting in ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/63
CPCC08K2003/3045C08K2201/005C09D5/08C09D163/00C09D7/61C09D7/63C09D7/70C08K13/04C08K3/30C08K7/26C08K5/103
Inventor 邱景生陈磊郑天扬
Owner 株洲市九华新材料涂装实业有限公司
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