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Metallic coating for high weather resistance heat reflective steel sheet and preparation method thereof

A metal coating and heat reflection technology, applied in the direction of reflection/signal coating, coating, etc., can solve the problems of reduced weather resistance of coating film, improper use of dispersant, influence of coating film fluidity, etc., and achieve excellent high weather resistance, good Effect of heat reflection performance and compatibility improvement

Active Publication Date: 2018-10-30
JINJIANG ANNENG BUILDING MATERIALS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyvinylidene fluoride (PVDF) coatings cannot be cured alone and need to be matched with corresponding primers, but primers that are better combined with polyvinylidene fluoride (PVDF) coatings are more expensive, which hinders its application to a certain extent. Therefore, the existing polyvinylidene fluoride (PVDF) coatings are modified to omit the use of traditional primers
[0004] The current coatings for steel coils mainly have the following deficiencies: the first: improper use of dispersant, and its boiling point is too high or too low, which will affect the fluidity of the coating film and cause defects on the surface of the coating film; Polyvinylidene fluoride composite resin, the compatibility of the two is poor, which affects the performance of the coating film, resulting in a decrease in the weather resistance of the coating film

Method used

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  • Metallic coating for high weather resistance heat reflective steel sheet and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] PVDF resin 24%,

[0035] Acrylic resin 8%,

[0036] Polymethyl methacrylate 2.5%,

[0037] Aluminum powder 10.2%,

[0038] Isophorone 40%,

[0039] Diisobutyl ketone 10%,

[0040] Defoamer 0.3%,

[0041] Silane coupling agent 0.6%,

[0042] UV ultraviolet absorber 0.4%,

[0043] Leveling aid 0.4%,

[0044] Titanium dioxide 3%,

[0045] Alignment agent 0.6%.

[0046] The preparation method of the highly weather-resistant heat-reflecting steel coil metal coating, the steps are as follows: according to the ratio, acrylic resin, polymethyl methacrylate and aluminum powder are stirred and dispersed at 3000r / min, and then organic Solvent ball milling until the slurry fineness is less than 10μm, then add PVDF resin, defoamer, silane coupling agent, UV ultraviolet absorber, leveling aid, titanium dioxide and alignment agent, stir and disperse evenly at 3000r / min to obtain The highly weatherable heat reflective steel sheet metal coating.

Embodiment 2

[0048] PVDF resin 22%,

[0049] Acrylic resin 10%,

[0050] Polymethyl methacrylate 3%,

[0051] Aluminum powder 11%,

[0052] Isophorone 42%

[0053] Xylene 5.3%

[0054] Defoamer 0.4%,

[0055] Silane coupling agent 0.6%,

[0056] UV ultraviolet absorber 0.5%,

[0057] Leveling aid 0.5%,

[0058] Titanium dioxide 4%,

[0059] Alignment agent 0.7%.

[0060] The preparation method of the highly weather-resistant heat-reflecting steel coil metal coating, the steps are as follows: according to the ratio, acrylic resin, polymethyl methacrylate and aluminum powder are stirred and dispersed at 3000r / min, and then organic Solvent ball milling until the slurry fineness is less than 10μm, then add PVDF resin, defoamer, silane coupling agent, UV ultraviolet absorber, leveling aid, titanium dioxide and alignment agent, stir and disperse evenly at 3000r / min to obtain The highly weatherable heat reflective steel sheet metal coating.

Embodiment 3

[0062] PVDF resin 20%,

[0063] Acrylic resin 10.5%,

[0064] Polymethyl methacrylate 5%,

[0065] Aluminum powder 12%,

[0066] Isophorone 45%,

[0067] Defoamer 0.4%,

[0068] Silane coupling agent 0.5%,

[0069] UV ultraviolet absorber 0.6%,

[0070] Leveling aid 0.5%,

[0071] Titanium dioxide 5%,

[0072] Alignment agent 0.5%.

[0073]The preparation method of the highly weather-resistant heat-reflecting steel coil metal coating, the steps are as follows: according to the ratio, acrylic resin, polymethyl methacrylate and aluminum powder are stirred and dispersed at 3000r / min, and then organic Solvent ball milling until the slurry fineness is less than 10μm, then add PVDF resin, defoamer, silane coupling agent, UV ultraviolet absorber, leveling aid, titanium dioxide and alignment agent, stir and disperse evenly at 3000r / min to obtain The highly weatherable heat reflective steel coil metal coating.

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Abstract

The invention relates to a highly weather-resistant heat-reflecting steel coil metal coating and a preparation method thereof, belonging to the technical field of steel coil coatings. The highly weather-resistant heat-reflective steel coil metal coating includes the following components in terms of mass percentage: 20-25% of PVDF resin, 8-11% of acrylic resin, 2-5% of polymethyl methacrylate, and 10-10% of aluminum powder 12%, organic solvent 45-50%, defoamer 0.3-0.6%, silane coupling agent 0.5-0.8%, UV ultraviolet absorber 0.4-0.6%, leveling aid 0.4-0.7%, titanium dioxide 3-6%, Alignment agent 0.5-0.9%, the sum of each component is 100% in total. The coating has excellent weather resistance and good physical properties.

Description

technical field [0001] The invention belongs to the technical field of steel coil coatings, and in particular relates to a highly weather-resistant heat-reflecting steel coil metal coating and a preparation method thereof. Background technique [0002] With the vigorous development of my country's construction industry, the demand for building materials is increasing year by year. Steel sheet coils are widely used as construction materials such as exterior walls and roofs. Generally, in order to improve the performance of high plate coils, galvanized treatment will be performed on the surface to increase the galvanized layer, thereby endowing the steel plate coils with excellent corrosion resistance, and the steel plate coils are mainly used as outdoor coils, so their weather resistance Sex has higher requirements. [0003] Coating weather-resistant paint on the surface of the galvanized layer can effectively improve the weather resistance of the galvanized steel sheet. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/16C09D133/12C09D5/33C09D7/20C09D7/61
CPCC08L2205/025C08L2205/03C09D5/004C09D127/16C09D7/20C09D7/61C08L33/12C08K13/02C08K2003/0812C08K2003/2241C08K5/132
Inventor 黄鸿途
Owner JINJIANG ANNENG BUILDING MATERIALS MFG
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