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High acid-resistant environment coil steel coating

An environmental and steel coil technology, applied in epoxy resin coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of reducing the adhesion between the coating film and the substrate, high sulfur content, and peeling of the paint film. The effect of environmental protection, process simplification, reduction of raw material cost

Active Publication Date: 2010-07-21
NIPPON PAINT GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, environmental pollution is becoming more and more serious. Users report that the coating has "spot rust". This kind of rust is related to the local air environment. Higher acidic molecules penetrate the surface of the paint film and penetrate into the underlying substrate, corroding the substrate, resulting in rust spots, reducing the adhesion between the coating film and the substrate, and causing paint film peeling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Topcoat preparation:

[0031] Raw material ratio

[0032] Titanium dioxide: 17.5wt%

[0033] Phthalocyanine blue: 5.5wt%

[0034] High imino resin: 40wt%

[0035] Amino resin: 20wt%

[0036] Catalyst: 1.5wt%

[0037] Adhesion promoter: 0.5wt%

[0038] Thinner: 15wt%

[0039] The above components are mixed and stirred according to the formula to make a polyester paint finish for metal coils. The performance test of the finish is shown in Table 1:

[0040] Table I

[0041]

[0042] It can be seen from the above table that the water boiling resistance and acid resistance of this product are significantly higher than those of the comparison product, and it can completely replace the coil topcoat commonly used in the market today.

[0043] Primer formulation:

[0044] 609 epoxy resin: 30wt%

[0045] 601 epoxy resin: 2wt%

[0046] n-Butanol: 6wt%

[0047] Cyclohexanone: 8wt%

[0048] Strontium chrome yellow: 6wt%

[0049] Titanium dioxide: 15wt%

[00...

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PUM

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Abstract

The invention relates to a high poaching-resistance and high acid-resistance coil steel coating and preparation thereof, particularly to the preparation of a polyester finish paint and an epoxy primer, which belongs to the technical field of coatings. A high acid-resistant environment coil steel coating is provided with a finish paint and a primer, wherein the finish paint is prepared from titanium white, phthalocyanine blue, polyester resin, amino resin, a catalyst, an adhesion promoter and a thinner; and the primer is prepared from high molecular epoxy resin, low molecular epoxy resin, normal butanol, cyclohexanone, strontium yellow, titanium white, kaolin, amino resin and xylene, and the finish paint and the primer are used after matched packaging.

Description

technical field [0001] The invention relates to a coil coating with high water boiling resistance and high acid resistance and its preparation, especially the preparation of a polyester topcoat and an epoxy primer, and belongs to the technical field of coatings. Background technique [0002] Coiled steel products are widely used in the construction industry for roofs, walls, movable workshops, etc. They are new products in my country. In 1987, the coiled steel production line was introduced for the first time in China, but it has developed rapidly. As the advantages of coiled steel are gradually recognized by people and the national economy continues to grow, while the national infrastructure is developing, people's requirements for the aging resistance of coiled steel products are also increasing. [0003] In addition to inspecting the aging performance in the laboratory, customers pay more attention to the guarantee of service life performance such as outdoor exposure, aci...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D161/32C09D163/02C09D5/08
Inventor 周艳平
Owner NIPPON PAINT GUANGZHOU
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