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A color pre-coated sheet with high gloss

A high-gloss, pre-coated board technology, applied in coatings, devices for coating liquid on the surface, etc., can solve the problem of separation, blistering or peeling of the topcoat and primer, low gloss of the topcoat layer, and inability to primer Layer protection and other issues to achieve the effect of easy peeling, high bonding performance, and reduced roughness

Active Publication Date: 2021-07-09
JIANGSU LIBA ENTERPRISE JOINT STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to achieve beautiful and durable performance, existing home appliances usually use colored pre-coated panels. The colored pre-coated panels are based on hot-dip galvanized steel sheets, and the corrosion resistance of the steel sheets is realized through the galvanized layer. Spread a layer of primer, and then spray a layer of topcoat on the surface of the primer to achieve high gloss and friction resistance on the surface of the steel plate. The existing color pre-coated steel plate is directly coated with the topcoat on the surface of the primer. Due to the primer and There is a certain surface tension between the topcoats. In a high-temperature and humid environment, it is easy to cause the topcoat and primer to separate, blister or peel off, which not only affects the appearance, but also cannot protect the primer layer. At the same time, the gloss of the topcoat layer also decreases. lower

Method used

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  • A color pre-coated sheet with high gloss
  • A color pre-coated sheet with high gloss
  • A color pre-coated sheet with high gloss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The specific preparation process of the wear-resistant bright finish paint is as follows: add 1.3kg of filler and 0.1kg of silicone leveling agent to 4.3kg of novolac epoxy resin and stir to mix evenly, then add 0.3kg of light-enhancing curing agent and 0.7kg of dissolved in 1.3 kg of polyamide resin in xylene, stirred and mixed at room temperature for 20-30 minutes to obtain a wear-resistant bright finish; the filler is talcum powder, kaolin and nano-silica mixed in a mass ratio of 1:1:0.25;

[0036] Wherein the specific preparation process of the light-enhancing curing agent is as follows:

[0037] Step 1: Mix 4-methoxybutyrophenone, formaldehyde and dimethylamine into water at a molar ratio of 1:1.1:1.2, mix well, add a small amount of hydrochloric acid to it, keep the pH of the solution at 1, and raise the temperature React at 80°C for 10-12h, wash the obtained product with a saturated sodium chloride solution and separate the liquids, and conduct vacuum distillatio...

Embodiment 2

[0043] The specific preparation process of the wear-resistant bright finish paint is as follows: Add 1.3kg of filler and 0.1kg of silicone leveling agent into 4.3kg of novolac epoxy resin and stir to mix evenly, then add 0.2kg of light-enhancing curing agent and 0.7kg of dissolved in 1.3 kg of polyamide resin in xylene, stirred and mixed at room temperature for 20-30 minutes, to obtain a wear-resistant bright finish paint.

Embodiment 3

[0045] The specific preparation process of the wear-resistant bright finish paint is as follows: add 1.3kg of filler and 0.1kg of silicone leveling agent into 4.3kg of novolac epoxy resin and stir to mix evenly, then add 1kg of the lightening curing agent prepared in Example 1 to it at the same time , Stir and mix at room temperature for 20-30 minutes to obtain a wear-resistant glossy finish.

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Abstract

The invention discloses a high-gloss colored pre-coated plate, which comprises a hot-dip galvanized steel plate, a layer of protective primer is sprayed on the surface of the hot-dip galvanized steel plate, and a layer of wear-resistant bright topcoat is sprayed on the surface of the protective primer. In the present invention, a layer of primer layer is compounded on the cladding surface of the hot-dip galvanized steel sheet, and a porous primer layer is compounded on the surface of the primer layer, and the primer layer and the porous primer layer are formed on the surface of the hot-dip galvanized steel sheet. Form the protective primer layer; because the composite primer is mixed with paraffin wax, when the composite primer adheres to the surface of the base primer layer, the mixed paraffin wax melts at high temperature, and the occupied sites of the paraffin wax are vacated. The surface of the paint layer is covered with voids vacated by paraffin, which makes the surface of the primer layer rough, which is convenient to realize the combination with the topcoat when spraying the topcoat in the later stage, and prevents the peeling of the topcoat layer. The surface of the layer is coated with topcoat, which causes the problem that the topcoat layer is easy to peel off.

Description

technical field [0001] The invention belongs to the field of home appliance material preparation and relates to a high-gloss color pre-coated board. Background technique [0002] In order to achieve beautiful and durable performance, existing home appliances usually use colored pre-coated panels. The colored pre-coated panels are based on hot-dip galvanized steel sheets, and the corrosion resistance of the steel sheets is realized through the galvanized layer. Spread a layer of primer, and then spray a layer of topcoat on the surface of the primer to achieve high gloss and friction resistance on the surface of the steel plate. The existing color pre-coated steel plate is directly coated with the topcoat on the surface of the primer. Due to the primer and There is a certain surface tension between the topcoats. In a high-temperature and humid environment, it is easy to cause the topcoat and primer to separate, blister or peel off, which not only affects the appearance, but al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/16B05D7/26B05D1/38
Inventor 卢凤仙
Owner JIANGSU LIBA ENTERPRISE JOINT STOCK
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