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Multi purpose color coating boards, and preparation method

A color-coated plate, multi-purpose technology, applied in the direction of chemical instruments and methods, coatings, special decorative structures, etc., can solve problems such as difficult to ensure processing adhesion, poor decorative performance of coatings, and uneven adhesion performance , to achieve the effect of improving decoration, reducing production cost and reducing quality objections

Active Publication Date: 2007-05-09
MAANSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of the back coating (or primer) varies greatly due to different structures: the back coating of the 2 / 1 structure is usually a modified epoxy resin or polyurethane coating with a purity of 50-80% in the yellow line. Poor decorative performance, low durability, not suitable for direct bare use, only suitable for processing sandwich panels; and due to the variety of coating systems on the back of traditional 2 / 1 products, the bonding performance is uneven when processing sandwich panels, and it is difficult to ensure Good processing adhesion; the back of the 2 / 2 structure product is composed of a primer and a back paint. The back paint is usually a cloudy white polyester paint. This coating has good decorative properties and excellent durability, and is suitable for corrugated processing The board is used directly, but the polyester system of the back surface paint has poor bonding performance, so it is not suitable for processing sandwich panels; at the same time, compared with the 2 / 1 structure product, the cost of the 2 / 2 structure product is relatively high

Method used

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  • Multi purpose color coating boards, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The substrate is Masteel self-heating galvanized sheet; the passivation solution is Bonderite 1402W, produced by Henkel Surface Technology Co., Ltd.; the front primer is polyurethane resin, produced by Shanghai Zhenhua Paint Factory; Ester, produced by Shanghai Zhenhua Paint Factory; the back primer is pure epoxy resin paint, produced by Shanghai Zhenhua Paint Factory, the resin purity is 90-92%, the pigment used is chromium strontium yellow pigment, produced by Shanghai Zhenhua Paint Factory Produced by Huazao Paint Factory.

[0028] Clean and passivate the hot-dip galvanized substrate according to the conventional process requirements, the passivation solution concentration is 20%, adjust the passivation treatment roll speed and pressure, so that the thickness of the passivation film is 20-25mg / m 2 , apply the front primer and back paint, the thickness of the back coating is controlled at 7-9um, bake at 180-200°C for 25s, cool, apply the front top coat, bake, cool, co...

Embodiment 2

[0029] Embodiment 2: except that the back primer is pure epoxy resin paint, produced by Shanghai Zhenhua Paint Factory, and its purity is 95-98%, all the other are identical with embodiment 1.

Embodiment 3

[0030] Embodiment 3: except the back primer is pure epoxy resin, produced by Shanghai Zhenhua Paint Factory, its purity is 98-99%, all the other are identical with embodiment 1.

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Abstract

A multi-purpose coated color plate used to prepare corrugated plate or sandwich plate is composed of a coated layer on front surface, a basic plate, and a coated layer on back, which uses high-purity (90-99%) epoxy resin as its filming resin. Its preparing process is also disclosed, which features that the Ti-Ni pigments are used to replace Cr-Sr yellow pigment for improving its corrosion resistance and decreasing environmental pollution.

Description

Technical field: [0001] The invention belongs to the technical field of color-coated boards, in particular to the technical field of color-coated boards for construction. Background technique: [0002] 90% of China's color-coated panels are mainly used in the construction industry to process sandwich panels and corrugated panels. Due to different processing methods and uses, the requirements for the coating structure, coating type, and coating performance of color-coated panels are also different. At present, the coating structure of color plate products commonly used in the construction market mainly includes 2 / 1 and 2 / 2. The type of front coating can be selected according to user needs, usually yellow epoxy primer or polyurethane primer with various Composite double coat of polyester topcoat in one colour. The performance of the back coating (or primer) varies greatly due to different structures: the back coating of the 2 / 1 structure is usually a modified epoxy resin or p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00B32B27/06B32B15/08B44C5/04B05D3/00C23F15/00
Inventor 王美珣朱跃进施国兰奚铁陈广言
Owner MAANSHAN IRON & STEEL CO LTD
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