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Compound cold galvanized coating

A cold galvanizing and coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of low anti-corrosion durability, environmental protection and ease of use, etc., achieve good cathodic protection, improve barrier protection, and resist. Excellent effect of salt spray

Inactive Publication Date: 2019-10-08
南通万邦采涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Hot-dip galvanizing is one of the methods to prevent steel surface corrosion, but its environmental protection and convenience are not high. In recent years, large-scale steel structures have emerged continuously. How to prolong their maintenance life has become a concern of everyone. It is necessary to develop low-VOC, high-efficiency Coatings with solid content are used to maintain the environment and human health. The existing commercially available cold spray zinc coatings use inorganic alkane resins as film-forming resins, and acrylic resins as film-forming resins. Generally, a single zinc powder is used as a film-forming resin. Anti-corrosion base material, low anti-corrosion durability

Method used

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  • Compound cold galvanized coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) The synthesis steps of modified acrylic resin are as follows:

[0027] a. The monomer is added into the monomer preparer through a filter, mixed evenly and put into the dropper for use;

[0028] B, the initiator is dropped into the initiator dissolver for dissolving, placed layered, separated from water for subsequent use, the initiator is benzoyl peroxide and cumene hydroperoxide, and the consumption of benzoyl peroxide is 0.8-1.2 parts, The consumption of cumene hydroperoxide is 0.33-0.73 part;

[0029] c. When the kettle is empty, inert gas is introduced to drive away the air in the kettle in advance, and then the solvent is put in according to the formula. The inert gas is nitrogen, the solvent is toluene and butyl acetate, the amount of toluene is 38.27-40.27 parts, and the amount of butyl acetate is for 9-11 servings;

[0030] d. Turn on the stirring, turn on the steam valve for heating, and turn on the cooling water. When the temperature rises to about 20°C...

Embodiment 2

[0036] (1) The synthesis steps of modified acrylic resin are as follows:

[0037] a. The monomer is added into the monomer preparer through a filter, mixed evenly and put into the dropper for use;

[0038] B, the initiator is dropped into the initiator dissolver for dissolving, placed layered, separated from water for subsequent use, the initiator is benzoyl peroxide and cumene hydroperoxide, and the consumption of benzoyl peroxide is 0.8-1.2 parts, The consumption of cumene hydroperoxide is 0.33-0.73 part;

[0039] c. When the kettle is empty, inert gas is introduced to drive away the air in the kettle in advance, and then the solvent is put in according to the formula. The inert gas is nitrogen, the solvent is toluene and butyl acetate, the amount of toluene is 38.27-40.27 parts, and the amount of butyl acetate is for 9-11 servings;

[0040] d. Turn on the stirring, turn on the steam valve for heating, and turn on the cooling water. When the temperature rises to about 20°C...

Embodiment 3

[0046] (1) The synthesis steps of modified acrylic resin are as follows:

[0047] a. The monomer is added into the monomer preparer through a filter, mixed evenly and put into the dropper for use;

[0048] B, the initiator is dropped into the initiator dissolver for dissolving, placed layered, separated from water for subsequent use, the initiator is benzoyl peroxide and cumene hydroperoxide, and the consumption of benzoyl peroxide is 0.8-1.2 parts, The consumption of cumene hydroperoxide is 0.33-0.73 part;

[0049] c. When the kettle is empty, inert gas is introduced to drive away the air in the kettle in advance, and then the solvent is put in according to the formula. The inert gas is nitrogen, the solvent is toluene and butyl acetate, the amount of toluene is 38.27-40.27 parts, and the amount of butyl acetate is for 9-11 servings;

[0050] d. Turn on the stirring, turn on the steam valve for heating, and turn on the cooling water. When the temperature rises to about 20°C...

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Abstract

The invention discloses a compound cold galvanized coating. The compound cold galvanized coating comprises, by weight, 7-9 parts of modified acrylic resin, 77-79 parts of zinc powder, 1-3 parts of aluminum powder and 11-13 parts of a coating solvent, wherein the acid value of the modified acrylic resin is 0-5mgKOH / g, and the glass-transition temperature of the modified acrylic resin is 20-60DEG C.The compound cold galvanized coating has the advantages that the solid content in the compound cold galvanized coating is more than 80%, the zinc content in a dry film is more than 90%; compared withthe addition of the singular zinc powder, the addition of flake electrostatic conductive aluminum powder to the coating further improves the barrier protection effect of the coating film on the ironand steel surface, and salt water resistance and salt fog resistance are better, and meanwhile, cathodic protection is well provided, and the iron and steel surface can be protected for a long time even in the harsh marine environment; the anticorrosion performance can be comparable to hot galvanizing, flexibility and practicability are even better than hot galvanizing, and the compound cold galvanized coating is widely used in large bridges, airports, stations, offshore facilities and other steel structures.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a composite cold galvanizing coating. Background technique [0002] Hot-dip galvanizing is one of the methods to prevent steel surface corrosion, but its environmental protection and convenience are not high. In recent years, large-scale steel structures have emerged continuously. How to prolong their maintenance life has become a concern of everyone. It is necessary to develop low-VOC, high-efficiency Coatings with solid content are used to maintain the environment and human health. The existing commercially available cold spray zinc coatings use inorganic alkane resins as film-forming resins, and acrylic resins as film-forming resins. Generally, a single zinc powder is used as a film-forming resin. Anti-corrosion base material, anti-corrosion durability is not high. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a com...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/10C09D7/65
CPCC09D1/00C09D5/103C09D5/106C09D7/65
Inventor 施新民陈雨平
Owner 南通万邦采涂料有限公司
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