Roll line solution for repairing surface coating of railway vehicle seamlessly and preparation method and application of roll line solution

A technology for surface coating and railway vehicles, which is applied in the field of non-marking repairing fluid for railway vehicle surface coating and its preparation, which can solve the problems of high cost, inability to guarantee, complex external structure, etc. The effect of painting, eliminating repair marks and reducing painting costs

Active Publication Date: 2013-03-20
CRRC YANGTZE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large volume of railway vehicles, complex external structure, manual operation of paint coating, large difference in surface coating performance and automobile coating, and the influence of construction environment factors, the existing jetting liquid treatment is used. The appearance of the paint layer is still significantly different, resulting in poor overall appearance quality of the vehicle, which cannot meet the requirements of high-quali

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 55g of mixed dibasic acid ester (PME), 20g of ethylene glycol ether acetate (CAC), 3g of one-component acrylic resin (GM-1), 0.2g of polyether defoamer (Defom 8700), acrylic Leveling agent (Levelol 495) 0.4g, mix and stir evenly, and then let it stand for 9~10 minutes to prepare the required spit liquid.

[0018] Its application method is as follows: after the conventional treatment and paint repair on the local defects of the surface coating of the railway vehicle, add the spout liquid into the watering can, and immediately spray the spout liquid on the interface of the old and new paint film for the first time; after 60 seconds Finally, spray the mouthwash for the second time to make the new and old paint films blend together, eliminating rough oil particles, foggy edges or mandarin duck color difference; In one piece, the old and new coatings look the same without streaking.

Embodiment 2

[0020] Weigh 60g of mixed dibasic acid ester (PME), 30g of ethylene glycol ether acetate (CAC), 5g of butyl acetate, 6g of one-component acrylic resin (GM-1), and polyether defoamer (Defom 8700) 0.4g, 0.5g of acrylic leveling agent (Levelol 495), mix and stir for 4-5 minutes to make it uniform, and then let it stand for 12-15 minutes to obtain the required oral liquid.

[0021] Its use method is as follows: After the conventional treatment and paint repair on the local defective part of the surface coating of the railway vehicle, add the spout liquid into the watering can, and immediately spray the spout liquid on the interface of the old and new paint film for the first time; after 50 seconds Finally, spray the mouthwash for the second time to make the new and old paint films blend together, eliminating rough oil particles, foggy edges or mandarin duck color difference; In one piece, the old and new coatings look the same without streaking.

Embodiment 3

[0023] Weigh 75g of mixed dibasic acid ester (PME), 40g of ethylene glycol ether acetate (CAC), 10g of butyl acetate, 6g of one-component acrylic resin (GM-1), and polyether defoamer (Defom 8700) 0.6g, 0.8g of acrylic leveling agent (Levelol 495), mix and stir for 5-7 minutes to make it uniform, and then let it stand for 8-10 minutes to obtain the required mouth-watering liquid.

[0024] The method of use is as follows: after the conventional treatment and paint repair on the local defects of the surface coating of the railway vehicle, add the spout liquid into the watering can, and immediately spray the spout liquid on the interface of the old and new paint film for the first time; after 70 seconds Finally, spray the mouthwash for the second time to make the new and old paint films blend together, eliminating rough oil particles, foggy edges or mandarin duck color difference; In one piece, the old and new coatings look the same without streaking.

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PUM

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Abstract

The invention discloses a roll line solution for repairing a surface coating of a railway vehicle seamlessly and a preparation method and application of the roll line solution. The roll line solution is prepared from 55-75 parts by weight of mixed dibasic acid ester (PME), 20-40 parts of ethylene glycol monoethyl ether acetate (CAC), 0-10 parts of butyl acetate, 3-10 parts of mono-component acrylic resin, 0.2-0.6 part of defoaming agent and 0.4-0.8 part of flatting agent. The preparation method comprises the steps of: firstly, weighing all components in the terms of weight proportion; secondly, putting all the components in a container, and rapidly and uniformly stirring; and finally, standing for 8-15min. During the use, a local defect part of the surface coating of the railway vehicle is conventionally treated and subjected to paint repair, then the roll line solution is sprayed for the first time in a connector position of a new paint film coating and an old paint film coating and is sprayed for the second time after 50-70s, and after the paint films are actually dried, the seamless effect of consistent appearances of the new coating and the old coating can be achieved. The roll line solution can ensure that no seam exists on the appearances of the new coating and the old coating through visual inspection by once repairing the local defect, thereby being especially suitable for the requirement of integrally consistent appearances of high-performance railway vehicles.

Description

technical field [0001] The invention relates to a coating on the surface of a railway vehicle, in particular to a spout liquid for non-mark repairing of the surface coating of a railway vehicle and its preparation method and application. Background technique [0002] After the surface of the railway vehicle is painted, there are often unavoidable local defects on the surface of the paint film, including sagging, roughness, pinholes, scratches, pollution, etc. Especially for some export or special railway wagons with high protection and high decorative performance requirements, visible paint film defects on the outer surface are not allowed to exist, which requires paint film repair. [0003] At present, what generally adopt for the processing of these defects is the method of partial repair or whole vehicle repainting. The local repair method is mainly to borrow the mouthpiece liquid on the market for small-area sprayed surfaces such as automobiles. Due to the large volume...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D7/12
Inventor 陶加法汪洋江锐锋刘秀生陈强左云清武永亮刘军祥肖艳石忠华
Owner CRRC YANGTZE CO LTD
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