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High-surface-hardness PCM colored coating layer steel plate

A color-coated steel plate, high-surface technology, applied in the device, coating, multi-color effect paint and other directions of coating liquid on the surface. and other problems, to achieve the effect of excellent acid resistance, beautiful appearance, high hardness and good gloss.

Inactive Publication Date: 2018-03-09
SUZHOU XINGHEYUAN COMPOSITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the color-coated sheets used in home appliances in the market, in order to meet the requirements of post-forming and various complex processing shapes, usually require excellent performance in the T-bend, and the requirements can reach 0-1T. However, this color-coated sheet, the surface The hardness is relatively low, usually F to H. During the stamping process, the contact between the surface and the mold will easily cause surface scratches, which will reduce the pass rate. In the later stage of the assembly of the home appliance, it will also face the problem of easy scratches and reduce the final product quality. Pass rate, the existing color steel plate has low hardness, which seriously affects the service life of subsequent products

Method used

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  • High-surface-hardness PCM colored coating layer steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0039] A high surface hardness PCM color coated steel plate, comprising a substrate 4, the upper surface of the substrate 4 is coated with an upper coating 3, and the upper surface of the upper coating 3 is coated with a topcoat paint layer 2, and the topcoat paint The outer surface of the layer 2 is covered with a protective film 1 , the lower surface of the substrate 4 is coated with an undercoat layer 5 , and the lower end of the undercoat layer 5 is coated with an epoxy back paint layer 6 .

[0040] The method steps are the same as in Example 1, and the different process parameters are:

[0041] Resin 70%, Pigment 6%, Solvent 30%, Auxiliary 5%.

[0042] The thickness of the upper coating 3 is 45um, and the thickness of the lower coating 5 is 35um.

[0043] The secondary drying temperature was controlled at 300°C, and the curing time was 30s.

[0044] The thickness of the topcoat paint layer 2 is controlled at 30um, and the thickness of the epoxy backcoat layer 6 is 25um....

Embodiment 3

[0046] A high surface hardness PCM color coated steel plate, comprising a substrate 4, the upper surface of the substrate 4 is coated with an upper coating 3, and the upper surface of the upper coating 3 is coated with a topcoat paint layer 2, and the topcoat paint The outer surface of the layer 2 is covered with a protective film 1 , the lower surface of the substrate 4 is coated with an undercoat layer 5 , and the lower end of the undercoat layer 5 is coated with an epoxy back paint layer 6 .

[0047] The method steps are the same as in Example 1, and the different process parameters are:

[0048] Resin 60%, Pigment 4%, Solvent 25%, Auxiliary 3.5%.

[0049]The thickness of the upper coating 3 is 35um, and the thickness of the lower coating 5 is 30um.

[0050] The secondary drying temperature was controlled at 200°C, and the curing time was 25s.

[0051] The thickness of the topcoat paint layer 2 is controlled at 25um, and the thickness of the epoxy backcoat layer 6 is 20um...

Embodiment 4

[0053] A high surface hardness PCM color coated steel plate, comprising a substrate 4, the upper surface of the substrate 4 is coated with an upper coating 3, and the upper surface of the upper coating 3 is coated with a topcoat paint layer 2, and the topcoat paint The outer surface of the layer 2 is covered with a protective film 1 , the lower surface of the substrate 4 is coated with an undercoat layer 5 , and the lower end of the undercoat layer 5 is coated with an epoxy back paint layer 6 .

[0054] The method steps are the same as in Example 1, and the different process parameters are:

[0055] Resin 65%, Pigment 4.5%, Solvent 22%, Auxiliary 4%.

[0056] The thickness of the upper coating 3 is 30um, and the thickness of the lower coating 5 is 25um.

[0057] The secondary drying temperature was controlled at 250°C, and the curing time was 20s.

[0058] The thickness of the topcoat paint layer 2 is controlled at 20um, and the thickness of the epoxy backcoat layer 6 is 15u...

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Abstract

The invention discloses a high-surface-hardness PCM colored coating layer steel plate. The steel plate comprises a base plate, wherein the upper surface of the base plate is smeared with an upper coating layer, the upper surface of the upper coating layer is coated with a finishing coat layer, a protecting film is paved on the outer surface of the finishing coat layer, the lower surface of the base plate is coated with a lower coating layer, and the lower end of the lower coating layer is coated with an epoxy back coat layer. The steel plate is prepared by the steps of coating the base plate with the upper coating layer and the finishing coat layer, carrying out surface pretreatment, coating the base plate with a coat, and carrying out baking and cooling. The prepared steel plate is light,beautiful and high in hardness and can be directly processed; and amino resin, epoxy resin and a thermosetting propylene coating form a mesh structure, so that the steel plate has very good hardnessand glossiness and good tenacity, and the hardness is high after the polyester resin is cured.

Description

technical field [0001] The invention relates to the technical field of decorative material processing, in particular to a high-surface-hardness PCM color-coated steel plate. Background technique [0002] Polyester coating with high surface hardness is a kind of fast automatic assembly line production method, which is coated on a continuous metal sheet (the sheet is derusted, degreasing, cleaned, passivated and surface treated before coating), and after high temperature curing Film-forming, a professional coating that achieves certain mechanical and physical properties. The coated pre-coated coil products are widely used in construction, home appliances, containers, automobile manufacturing, cooking utensils and other fields. After purchasing pre-coated coil products, that is, color-coated steel sheets, users can directly process them into various shapes. The product does not need to be repainted, which greatly simplifies the production process of metal sheet products, redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/10C09D161/20C09D163/00C09D167/00C09D5/29C09D7/61C09D7/63B05D7/14B05D7/00
CPCC09D123/10B05D7/14B05D7/58C08K3/346C08K3/36C08K2003/3045C08L2205/03C09D5/18C09D5/29C09D163/00C09D167/00C08L61/20C08L63/00
Inventor 赵东明黄雄白
Owner SUZHOU XINGHEYUAN COMPOSITE MATERIALS CO LTD