Method for preparing anti-graffiti coating for rail train carriage

A rail train and anti-graffiti technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of anti-graffiti coatings that have not yet existed, and achieve excellent anti-graffiti performance, good corrosion resistance, and high hardness.

Inactive Publication Date: 2009-12-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Yet, with regard to the technology reported at present, there is not yet the anti-graffiti coating that is specially used in rail train carriage

Method used

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  • Method for preparing anti-graffiti coating for rail train carriage

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The anti-graffiti coating for rail train carriage of the present embodiment comprises following raw material:

[0032] Trifluoropropyl cyclotrisiloxane 10 parts

[0033] Octamethylcyclotetrasiloxane 6 parts

[0034] 12 parts of hydroxyl-terminated silicone resin

[0035] 15 parts of trifluoroethyl methacrylate

[0036] 8 parts ethyl methacrylate

[0037] 9 parts of hydroxyethyl methacrylate

[0038] Polyisocyanate prepolymer 26 parts

[0039] Catalyst 0.3 parts

[0040] Initiator 0.2 parts

[0041] 31 parts of pigments and fillers

[0042] Auxiliary 6 parts

[0043] 30 parts of organic solvent

[0044] The preparation method of the anti-graffiti coating for rail train carriage of the present embodiment, its steps are as follows:

[0045] Add octamethylcyclotetrasiloxane, trifluoropropylcyclotrisiloxane, hydroxyl-terminated silicone resin, and catalyst into reactor 1 by weight ratio, stir evenly, and heat to keep the system temperature at 80-100°C , vacuumize,...

Embodiment 2

[0048] Trifluoropropyl cyclotrisiloxane 12 parts

[0049] Octamethylcyclotetrasiloxane 8 parts

[0050] 8 parts of hydroxyl-terminated silicone resin

[0051] 12 parts of hexafluorobutyl methacrylate

[0052] 8 parts ethyl methacrylate

[0053] 12 parts of hydroxyethyl methacrylate

[0054] Polyisocyanate prepolymer 28 parts

[0055] Catalyst 0.4 part

[0056] Initiator 0.2 part

[0057] 28 parts of pigments and fillers

[0058] Auxiliary 6 parts

[0059] 37 parts of organic solvent

[0060] The preparation method of the anti-graffiti coating for rail train carriage of the present embodiment, its steps are the same as embodiment 1.

Embodiment 3

[0062] Trifluoropropyl cyclotrisiloxane 15 parts

[0063] Octamethylcyclotetrasiloxane 8 parts

[0064] 10 parts of hydroxyl-terminated silicone resin

[0065] Dodecafluoroheptyl methacrylate 12 parts

[0066] Methyl methacrylate 12 parts

[0067] 10 parts of hydroxypropyl methacrylate

[0068] Polyisocyanate prepolymer 27 parts

[0069] Catalyst 0.45 parts

[0070] Initiator 0.2 parts

[0071] 32 parts of pigments and fillers

[0072] Auxiliary 9 parts

[0073] 33 parts of organic solvent

[0074] The preparation method of the anti-graffiti coating for rail train carriage of the present embodiment, its steps are the same as embodiment 1.

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Abstract

The invention discloses a method for preparing an anti-graffiti coating for a rail train carriage, wherein the coating is prepared by mixing a component A and a component B. The component A comprises the following components: 21 to 65 portions of hydroxy-fluoro-silicon modified acrylic resin, 15 to 40 portions of pigments and fillers, 1 to 10 portions of auxiliary agent, and 16 to 42 portions of organic solvent; and the component B comprises 20 to 36 portions of polyisocyanate prepolymer. When in use, the components A and B are mixed and stirred evenly according to a mass ratio of 2-7:1, and then the mixture is adjusted to proper viscosity for construction by using a spraying method. The surface of a lacquer film formed by the coating has the advantages of low tensile force, compact structure, high hardness, excellent anti-graffiti performance, abrasion resistance, scrub resistance, corrosion resistance and long service life.

Description

technical field [0001] The invention relates to a preparation method of an anti-graffiti paint, in particular to a preparation method of an anti-graffiti paint for rail train carriages. Background technique [0002] Compared with ordinary vehicle coatings, rail train coatings not only need to have certain corrosion resistance and adhesion, but also put forward higher requirements for hardness, gloss, weather resistance, safety, and anti-graffiti. At present, the countries that produce this coating in the world are mainly the United States, Japan, Germany, France and other countries, accounting for 80% of the world's market share, and the domestic coating market is also occupied and monopolized by products from these countries. Therefore, considering my country's huge demand for rail train coatings in the future, my country urgently needs to develop rail train coatings with independent intellectual property rights. [0003] At present, graffiti behaviors in the train compart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/00
Inventor 肖国民刘虎尚倩倩谈国华程作华汤向南
Owner SOUTHEAST UNIV
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