Waterborne epoxy zinc-rich primer for railway wagon and preparation method of waterborne epoxy zinc-rich primer

A water-based epoxy zinc-rich technology for railway wagons, which is applied in the field of coatings to achieve the effects of safe construction process, short drying time and better construction process.

Active Publication Date: 2018-12-07
CRRC YANGTZE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the existing solvent-based epoxy zinc-rich primer, the present invention provides a water-based epoxy zinc-rich primer for railway wagons and a preparation method thereof, aiming to provide a long pot life, short drying time and anti-corrosion A water-based epoxy zinc-rich primer whose performance can meet the anti-corrosion requirements of railway wagons, so as to completely replace the use of solvent-based water-based epoxy zinc-rich primers on railway wagons

Method used

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  • Waterborne epoxy zinc-rich primer for railway wagon and preparation method of waterborne epoxy zinc-rich primer
  • Waterborne epoxy zinc-rich primer for railway wagon and preparation method of waterborne epoxy zinc-rich primer
  • Waterborne epoxy zinc-rich primer for railway wagon and preparation method of waterborne epoxy zinc-rich primer

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A water-based epoxy zinc-rich primer for railway wagons, which is formed by mixing component A and component B according to a mass ratio of 2:1;

[0032] Wherein, the preparation method of component A comprises the steps:

[0033] 1) Add 5 parts by weight of XZ-H180, part of ethylene glycol monobutyl ether, and 0.5 parts by weight of 6208-40 into the dispersion tank in sequence, and disperse and mix evenly;

[0034] 2) Add 0.5 parts by weight of A300 and 60 parts by weight of 400-mesh zinc powder to the feed liquid prepared in step 1), disperse at a high speed to a fineness≤80 microns, and then use the remaining ethylene glycol monobutyl ether (two batches of The total consumption of ethylene glycol monobutyl ether is 5 parts by weight) its viscosity is adjusted (ISO6# cup) to ≥ 30 seconds, packed after filtering and removing impurities;

[0035] Wherein, the preparation method of B component is:

[0036] Add 45 parts by weight of water-based epoxy resin, 0.1 part by ...

Embodiment 2

[0042] A water-based epoxy zinc-rich primer for railway wagons, which is formed by mixing component A and component B according to a mass ratio of 3:1;

[0043] Wherein, the preparation method of component A comprises the steps:

[0044] 1), add 12 parts by weight of Banco905, part of propylene glycol methyl ether, and 2.7 parts by weight of Tego740 into the dispersion tank in sequence, and disperse and mix evenly;

[0045] 2), 1.7 parts by weight of A200, 73 parts by weight of 1000-mesh zinc powder are added to the feed liquid prepared in step 1), dispersed at a high speed to a fineness≤80 microns, and then use the remaining propylene glycol methyl ether (two batches of propylene glycol The total consumption of methyl ether is 15 parts by weight) and its viscosity is adjusted (ISO6# cup) to ≥ 30 seconds, and packed after filtering and removing impurities;

[0046] The preparation method of B component is:

[0047] Add 67 parts by weight of water-based epoxy resin, 3.1 parts...

Embodiment 3

[0053] A water-based epoxy zinc-rich primer for railway wagons, which is formed by mixing Component A and Component B according to a mass ratio of 4:1;

[0054] Wherein, the preparation method of component A comprises the steps:

[0055] 1) Add 20 parts by weight of XZ-H180, part of propylene glycol methyl ether, and 5 parts by weight of Tego740 into the dispersion tank in sequence, and disperse and mix evenly;

[0056] 2), 3 parts by weight of A300, 88 parts by weight of 1000 mesh zinc powder are added to the feed liquid prepared in step 1), dispersed at a high speed to a fineness≤80 microns, and then use the remaining propylene glycol methyl ether (two batches of propylene glycol The total consumption of methyl ether is 25 parts by weight) its viscosity is adjusted to (ISO6# cup) to ≥ 30 seconds, and it is packed after filtering and removing impurities;

[0057] The preparation method of B component is:

[0058] Add 90 parts by weight of water-based epoxy resin, 5 parts by w...

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Abstract

The invention relates to a waterborne epoxy zinc-rich primer for a railway wagon and a preparation method of the waterborne epoxy zinc-rich primer. The zinc-rich primer is prepared by mixing a component A with a component B, wherein the component A is prepared from a waterborne epoxy curing agent, a first solvent, an anti-settling agent, a dispersing agent and zinc powder, and the component B is prepared from waterborne epoxy resin, a defoaming agent, a flash-rusting agent, a base material wetting agent and deionized water. Compared with oil paint, the waterborne epoxy resin and the waterborneepoxy curing agent are taken as film forming substances, so that the transportation, storage and construction processes are safer and more environment-friendly. According to the waterborne epoxy zinc-rich primer, the drying time of a paint film is short, the surface drying time is 30 minutes, the full drying time is 8 hours, the working life can reach 5-6 hours, the waterborne epoxy zinc-rich primer can be used for replacing a solvent-type epoxy zinc-rich primer for resisting the corrosion of a steel structure and is particularly suitable for the railway wagon.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based epoxy zinc-rich primer for railway wagons and a preparation method thereof. Background technique [0002] The content of volatile organic compounds (VOC) in the solvent-based epoxy zinc-rich primer used for railway wagons is 500-700g / L during construction. A large amount of organic solvents volatilize during construction, which will bring serious harm to the environment and human health, and also affect production. The storage, transportation and construction links have buried potential safety hazards. However, the current water-based epoxy zinc-rich primer generally has short pot life and long drying time, which is inconvenient for construction. With the environmental protection requirements of the coatings industry and the anti-corrosion requirements of railway wagons, the development of water-based epoxy zinc-rich primers with low VOC content, long pot life and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10
CPCC08K2003/0893C08L2205/025C09D5/106C09D163/00C08L63/00C08K3/08
Inventor 肖艳贺玉平陶加法陈强周增光刘华学刘军祥范国栋李德斌郭海涛
Owner CRRC YANGTZE CO LTD
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