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Anticorrosive paint for weather-resistant corrosion-resistant steel pipe outer wall

An anti-corrosion coating and corrosion-resistant technology, used in anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve problems such as easy corrosion and rust, achieve rapid drying, improve coating efficiency, and excellent weather resistance. Effect

Active Publication Date: 2011-07-13
TIANJIN COLOROAD COATING & CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing steel pipes are easily corroded and rusted during transportation, and to invent a steel pipe outer wall that is suitable for various construction methods and can be dried naturally, has strong bonding force with steel pipes, and has good protection performance for steel pipes. anti-corrosion paint

Method used

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  • Anticorrosive paint for weather-resistant corrosion-resistant steel pipe outer wall
  • Anticorrosive paint for weather-resistant corrosion-resistant steel pipe outer wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0021] Embodiment 1-3 The preparation method of the anti-corrosion coating for the outer wall of weather-resistant and corrosion-resistant steel pipes, comprising the following steps:

[0022] Add the hydrocarbon solvent in the formula (that is, the mixture of xylene and toluene) into the tank first, then slowly add alkyd resin, epoxy resin and terpene resin in sequence and stir evenly in time. Stop stirring after the resin is completely mixed, add anti-corrosion agent and drier, and stir well, then stop stirring. Adjust the viscosity (15-28s, apply 4 viscosity cups) and solids (≥35%) to the acceptable range, filter and pack.

Embodiment 4

[0024] The conventional anti-corrosion coating and the anti-corrosion coating of the present invention are made into plates under the same conditions, and the surface drying time, hard drying time, adhesion, neutral salt spray resistance, aging resistance and heat and humidity resistance of the two coating films are compared. , and the results are shown in Table 1.

[0025] From the results of comparative experiments, the anti-corrosion coating prepared by the present invention has rapid drying, good adhesion, excellent salt spray resistance, weather resistance and heat and humidity resistance, and can provide steel pipes under various harsh natural conditions. Excellent corrosion protection.

[0026] Table 1 Conventional anti-corrosion paint and performance contrast of anti-corrosion paint of the present invention

[0027]

Embodiment 5

[0029] After passing the anti-corrosion coating on the outer wall of the weather-resistant and corrosion-resistant steel pipes of the above-mentioned embodiments through a 200-mesh net, and then applying one of the methods of brushing, spraying, showering or dipping, the coating film can reach 24 hours later. Properties listed in Table 2.

[0030] Table 2 Inspection indicators of anti-corrosion coatings for outer walls of weather-resistant and corrosion-resistant steel pipes

[0031]

[0032]

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Abstract

The invention relates to an anticorrosive paint for a weather-resistant corrosion-resistant steel pipe outer wall, which is prepared from 30-50 parts of alkyd resin, 2-5 parts of epoxy resin, 10-15 parts of terpene resin, 30-50 parts of hydrocarbon solvent, 3-8 parts of anticorrosive agent and 1-3 parts of drying agent. The paint provided by the invention can be applied by brushing, spraying, dipcoating, curtain coating or the like, and is naturally dried at normal temperature. The terpene resin adopted in the invention has high stability for oxygen, heat and light, and has excellent ageing resistance, so that the paint has excellent weather resistance. The rust inhibitor adopted in the invention can form a compact protective layer with high adhesive force on the surface of a steel pipe,and thus, prevents or slows the permeation of oxygen and water in the environment under the isolation action, thereby inhibiting the generation of corrosion microcells and performing a favorable anticorrosive protection function.

Description

technical field [0001] The present invention relates to a kind of protective performance for the metal surface, which makes it more suitable for providing protection to the metal surface during storage and long-distance transportation in highly corrosive environments, in particular to a kind of anti-corrosion coating for the outer wall of weather-resistant and corrosion-resistant steel pipes coating. Background technique [0002] After the steel pipe is rolled off the assembly line of the steel plant, its surface corrosion resistance is poor, and it is easily corroded during storage and transportation, which seriously affects its performance and service life. Once its surface is corroded, its subsequent treatment process is cumbersome and the workload is heavy. At present, processes such as alloy plating and phosphating on the surface of the steel pipe are used in production to treat the light pipe to improve its anti-corrosion performance. Compared with other surface anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D163/00C09D145/00C09D7/12C09D5/08F16L58/10
CPCY02A20/20
Inventor 田铁梁李华宁孟昭杰张秉毅翟英雷姚学民韩秋智孙振赢李建杰李垒
Owner TIANJIN COLOROAD COATING & CHEM
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