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Weather-resistant steel plate and preparation process thereof

A technology of weather resistance and steel plate, applied in the direction of coating, pretreatment surface, layered products, etc., can solve the problems of difficult large-scale construction, poor metal adhesion, high production cost, etc., and achieve excellent adhesion and processability, durability Effect of better heat and hot hardness, excellent solvent resistance

Inactive Publication Date: 2015-04-08
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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  • Weather-resistant steel plate and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 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:

[0033] Silicone modified polyester resin: 30%; filler: 20%;

[0034] Silicone coupling agent: 1%; Phthalate: 0.5%;

[0035] Xylene solvent: 48.5%.

[0036] 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:

[0037] Silicone modified polyester resin: 40%; pigment: 10%;

[0038] Polyamide curing agent: 5%; Filler: 10%;

[0039] Siloxane coupling agent: 1.2%; Xylene solvent: 33.8%.

[0040] The following is a further description of the composition of the above compone...

Embodiment 2

[0049] 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:

[0050] Silicone modified polyester resin: 50%; filler: 46%;

[0051] Silicone coupling agent: 2%; Phthalate: 1%;

[0052] Xylene solvent: 1%.

[0053] 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:

[0054] Silicone modified polyester resin: 60%; pigment: 15%;

[0055] Polyamide curing agent: 7%; Filler: 15%;

[0056] Siloxane coupling agent: 1.8%; Xylene solvent: 1.2%.

[0057] The following is a further description of the composition of the above components: ...

Embodiment 3

[0066] 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:

[0067] Silicone modified polyester resin: 45%; filler: 46%;

[0068] Silicone coupling agent: 1.5%; Phthalate: 0.5%;

[0069] Xylene solvent: 7%.

[0070] 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:

[0071] Silicone modified polyester resin: 55%; Pigment: 12%;

[0072] Polyamide curing agent: 6%; Filler: 14%;

[0073] Siloxane coupling agent: 1.5%; Xylene solvent: 11.5%.

[0074] The following is a further description of the composition of the above componen...

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Abstract

The invention discloses a weather-resistant steel plate and a preparation process thereof. A base coating and a surface coating applied to the weather-resistant steel plate are prepared from organosilicone-modified polyester resin serving as a base material of a coating composition and assisted by other assistants. In a practical preparation process, the base coating and the surface coating employing the organosilicone-modified polyester resin as the base material are mainly adopted; and coating and baking are sequentially carried out on a pre-coated steel plate, so that the operation flow is simple and rapid. In practical use, the organosilicone-modified polyester resin has relatively excellent high-temperature resistance, and therefore the prepared coating composition has relatively good property, can be sprayed on metal surfaces such as iron material, aluminum products or stainless steel, and can be widely applied to heat-resistant materials of an oil refining furnace, an aluminum refining furnace, an engine exhaust system, a motor vehicle exhaust silencer and the like in a high-temperature working state for a long time.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a weather-resistant steel plate and a manufacturing process thereof. 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 coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D7/12C09D5/08B32B15/09B32B33/00B05D7/14
CPCC09D167/00B05D1/38B05D3/0254C08K2201/014C08L2201/08C09D5/08C09D7/61C09D7/65
Inventor 张一帆
Owner CHENGDU JINHUI TECH
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