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Manufacturing process of weather-resistant steel plate

A technology of production process and weather resistance, which is used in devices for coating liquid on the surface, polyester coatings, coatings, etc. It can solve the problems of difficult large-area construction, poor metal adhesion, and long curing time, and achieve excellent adhesion. The effects of improved heat resistance and processability, better heat resistance and hot hardness, and excellent solvent resistance

Inactive Publication Date: 2015-03-11
CHENGDU JINHUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the advancement of technology, it is found that silicone resin also has better heat resistance. The basic skeleton of silicone resin is the main chain of Si-O, which has higher bond energy than the C-C bond of ordinary polymers. Heat resistance and anti-oxidation are also strong. Normally, the heat resistance temperature of silicone resin is 300°C. It has been proved by practice that in addition to heat resistance, silicone resin also shows excellent weather resistance and stain resistance. , water removal, cold resistance and chemical corrosion resistance, etc., but in actual use, there are still the following problems, such as: need high temperature curing (above 250 ℃) and long curing time, difficult large-scale construction, adhesion to metal Poor, poor solvent resistance and high production cost, for this reason, we must find a high-performance material that can replace silicone resin for the coating treatment of steel plates. Polyester resin or epoxy resin for higher heat resistance

Method used

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  • Manufacturing process of weather-resistant steel plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The weather-resistant steel plate involved in this embodiment is prepared by coating and baking the pre-coated steel plate with the base coating and the surface coating in sequence, wherein the base coating is applied to the surface of the pre-coated steel plate to form a base coating , by weight percentage, the base coating contains the following components:

[0032] Silicone modified polyester resin: 30%; filler: 20%;

[0033] Silicone coupling agent: 1%; Phthalate: 0.5%;

[0034] Xylene solvent: 48.5%.

[0035] The surface coating is applied to the surface layer of the base coating film to form a surface coating film. In terms of weight percentage, the surface coating comprises the following components:

[0036] Silicone modified polyester resin: 40%; pigment: 10%;

[0037] Polyamide curing agent: 5%; Filler: 10%;

[0038] Siloxane coupling agent: 1.2%; Xylene solvent: 33.8%.

[0039] The following is a further description of the composition of the above compone...

Embodiment 2

[0048] The weather-resistant steel plate involved in this embodiment is prepared by coating and baking the pre-coated steel plate with the base coating and the surface coating in sequence, wherein the base coating is applied to the surface of the pre-coated steel plate to form a base coating , by weight percentage, the base coating contains the following components:

[0049] Silicone modified polyester resin: 50%; filler: 46%;

[0050] Silicone coupling agent: 2%; Phthalate: 1%;

[0051] Xylene solvent: 1%.

[0052] The surface coating is applied to the surface layer of the base coating film to form a surface coating film. In terms of weight percentage, the surface coating comprises the following components:

[0053] Silicone modified polyester resin: 60%; pigment: 15%;

[0054] Polyamide curing agent: 7%; Filler: 15%;

[0055] Siloxane coupling agent: 1.8%; Xylene solvent: 1.2%.

[0056] The following is a further description of the composition of the above components: ...

Embodiment 3

[0065] The weather-resistant steel plate involved in this embodiment is prepared by coating and baking the pre-coated steel plate with the base coating and the surface coating in sequence, wherein the base coating is applied to the surface of the pre-coated steel plate to form a base coating , by weight percentage, the base coating contains the following components:

[0066] Silicone modified polyester resin: 45%; filler: 46%;

[0067] Silicone coupling agent: 1.5%; Phthalate: 0.5%;

[0068] Xylene solvent: 7%.

[0069] The surface coating is applied to the surface layer of the base coating film to form a surface coating film. In terms of weight percentage, the surface coating comprises the following components:

[0070] Silicone modified polyester resin: 55%; Pigment: 12%;

[0071] Polyamide curing agent: 6%; Filler: 14%;

[0072] Siloxane coupling agent: 1.5%; Xylene solvent: 11.5%.

[0073] The following is a further description of the composition of the above componen...

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Abstract

The invention discloses a manufacturing process of a weather-resistant steel plate. The manufacturing process is characterized in that a base coating and a surface coating are sequentially coated and roasted on a pre-coating steel plate, wherein the base coating and the surface coating used are prepared through silicone modified polyester resin serving as the base materials of the coating composite and other auxiliaries; when in actual use, the silicone modified polyester resin is outstanding in high temperature resistance, so that the resulting coating composite is of high property and can be coated to the surfaces of iron, aluminum or stainless steel and other metals; the coating composite can also be widely applied to heat-resisting materials used in a high-temperature working state for a long term, such as an oil refining furnace, an aluminum refining furnace, an engine exhaust system and a silencer of a motor vehicle.

Description

technical field [0001] The invention belongs to the field of metal materials, and specifically relates to a manufacturing process of a weather-resistant steel plate. Background technique [0002] The steel plate is made by coating and drying the pre-coated steel plate before processing and forming. Since the film is formed after the film is formed, it is not only required that the pre-coated steel plate can meet the high requirements of hardness and formability. The coating material used for its coating also needs to be resistant to processing. In the field of metal materials, the coating on the metal can not only protect and beautify the appearance of the metal, such as rust prevention and coloring, etc. Sometimes, the coating can also be used to achieve some special functions, such as improving lubrication and improving deep drawing. performance etc. In the actual application process, the effect of the coating is closely related to the coating. Taking heat-resistant coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/24C09D167/00C09D7/12
Inventor 张一帆
Owner CHENGDU JINHUI TECH
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