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Preparation method of coating for heat-resistant steel plate

A steel plate, heat-resistant technology, used in anti-corrosion coatings, coatings, etc., can solve the problems of difficult large-area construction, poor metal adhesion, poor solvent resistance, etc., and achieve excellent adhesion and processability, heat resistance and heat resistance. The effect of better hardness and excellent solvent resistance

Inactive Publication Date: 2015-03-25
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, and at the same time, it also needs to have higher heat resistance than the existing polyester resin or epoxy resin

Method used

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  • Preparation method of coating for heat-resistant steel plate

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Embodiment 1

[0024] The coating that present embodiment relates to is made up of following components:

[0025] Silicone-modified polyester resin: It is prepared by polycondensation reaction of silicone resin with saturated polyester resin as a modifier, wherein the mass ratio of silicone resin to saturated polyester resin is 1:0.1, silicone The solid content of the modified polyester resin is 55%, the specific gravity is 1.08, and the acid value is 2mgKOH / g.

[0026] Pigment: including titanium dioxide and white carbon black, wherein the mass ratio of titanium dioxide and white carbon black is 1:1.

[0027] Filler: including barium sulfate, calcium carbonate, talc powder and silicon dioxide, wherein the mass ratio of barium sulfate, calcium carbonate, talc powder and silicon dioxide is 1:1.5:2:1.

[0028] Solvent: including butyl ether, butyl ester and butanol, the mass ratio of said butyl ether, butyl ester and butanol is 1:1:2.5.

[0029] Its preparation process is as follows:

[003...

Embodiment 2

[0037] The coating that present embodiment relates to is made up of following components:

[0038] Silicone-modified polyester resin: It is prepared by polycondensation reaction of silicone resin with saturated polyester resin as a modifier, wherein the mass ratio of silicone resin to saturated polyester resin is 1:0.4, silicone The solid content of the modified polyester resin is 65%, the specific gravity is 1.14, and the acid value is 10mgKOH / g.

[0039] Pigment: including titanium dioxide and white carbon black, wherein the mass ratio of titanium dioxide and white carbon black is 3:1.

[0040] Filler: including barium sulfate, calcium carbonate, talc powder and silicon dioxide, wherein the mass ratio of barium sulfate, calcium carbonate, talc powder and silicon dioxide is 2:3:4:1.

[0041] Solvent: including butyl ether, butyl ester and butanol, the mass ratio of butyl ether, butyl ester and butanol is 1.5:1:3.2.

[0042] Its preparation process is as follows:

[0043] A...

Embodiment 3

[0050] The coating that present embodiment relates to is made up of following components:

[0051] Silicone-modified polyester resin: It is prepared by polycondensation reaction of silicone resin with saturated polyester resin as a modifier, wherein the mass ratio of silicone resin to saturated polyester resin is 1:0.3, silicone The solid content of the modified polyester resin is 60%, the specific gravity is 1.11, and the acid value is 6mgKOH / g.

[0052] Pigment: including titanium dioxide and white carbon black, wherein the mass ratio of titanium dioxide and white carbon black is 2:1.

[0053] Filler: including barium sulfate, calcium carbonate, talc powder and silicon dioxide, wherein the mass ratio of barium sulfate, calcium carbonate, talc powder and silicon dioxide is 1.5:2:3:1.

[0054] Solvent: including butyl ether, butyl ester and butanol, the mass ratio of butyl ether, butyl ester and butanol is 1.2:1:2.9.

[0055] Its preparation process is as follows:

[0056] ...

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Abstract

The invention discloses a preparation method of a coating for a heat-resistant steel plate. The preparation method comprises the steps of with organic silicon modified polyester resin as a coating matrix, adding auxiliary materials including pigment, a polyamide curing agent, filler, a siloxane coupling agent and a solvent, and mixing; and grinding by using a ball mill to form paste with the fineness of 10-20mu m. In actual use, the organic silicon modified polyester resin has relatively good high temperature resistance, so that the coating prepared from the organic silicon modified polyester resin has favorable property, can be sprayed on the surface of metal such as an iron material, an aluminum material or stainless steel and is widely applied to a heat-resistant material such as a baking tray, an electric frying pan and a grilling apparatus.

Description

technical field [0001] The invention belongs to the field of coating of metal materials, in particular, it relates to a preparation method of coating for heat-resistant steel plates. Background technique [0002] The coating on the metal can not only protect and beautify the appearance of the metal, such as anti-rust and coloring, but sometimes, the coating can also be used to achieve some special functions, such as improving lubrication and deep drawing performance. In the actual application process, the effect of the coating is closely related to the coating. Taking heat-resistant coatings as an example, heat-resistant coatings mean that the coating film can be maintained at high temperature (generally above 150°C) for a long time without cracking, with little yellowing and falling off, and can maintain appropriate physical properties and protective functions. , the existing patent document CN1583912 (coil primer coating and its preparation method, 2005.02.23) discloses a...

Claims

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Application Information

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IPC IPC(8): C09D183/10C09D7/12C09D5/08C08G77/445
Inventor 张一帆
Owner CHENGDU JINHUI TECH
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