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Preparation method of reflective coating for outdoor pre-coated coiled steel plate

A reflective coating and pre-coating technology, applied in reflective/signal coatings, polyester coatings, coatings, etc., can solve problems such as easy collision with construction baffles, line of sight obstruction, etc. Avoid accidents, combine rigidity and flexibility

Pending Publication Date: 2021-12-14
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in dark places at night, people can easily bump into construction baffles and cause accidents because their vision is obstructed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0035] 1) Add 22 parts of polyester resin into a clean dispersion tank, slowly add 2 parts of solvent A, 2 parts of solvent B, 0.4 parts of wetting and dispersing agent and 0.35 parts of silica micropowder in sequence at a stirring speed of 450r / min, Gradually increase the speed to 800r / min, and stir for 10 minutes;

[0036] 2) Then keep the above speed and add 19 parts of micron-sized titanium dioxide, 6.5 parts of reflective powder and 0.5 parts of colored toner, then increase the speed to 1400r / min, and stir for 18 minutes;

[0037] 3) Pour the slurry that has been stirred in step 2) into a grinder for high-speed grinding. When it is ground to a fineness below 30 μm, pour it into a clean dispersion tank, and rinse the grinder with 5.5 parts of solvent C, rinse The liquid is merged into a clean dispersion tank;

[0038] 4) Slowly increase the rotation speed to 600r / min, and after stirring for 8 minutes, slowly add 27 parts of polyester resin, 5.5 parts of amino resin, 0.3 p...

Embodiment 3

[0040] 1) Add 24 parts of polyester resin into a clean dispersion tank, slowly add 2.5 parts of solvent A, 2.5 parts of solvent B, 0.5 parts of wetting and dispersing agent and 0.5 parts of silica micropowder in sequence at a stirring speed of 550r / min, Gradually increase the speed to 1000r / min, and stir for 15 minutes;

[0041] 2) Then keep the above speed and add 20 parts of micron-sized titanium dioxide, 8 parts of reflective powder and 0.6 parts of coloring toner, then increase the speed to 1450r / min, and stir for 20 minutes;

[0042] 3) Pour the slurry that has been stirred in step 2) into a grinder for high-speed grinding, and when it is ground to a fineness of less than 30 μm, pour it into a clean dispersion tank, and rinse the grinder with 6 parts of solvent C, rinse The liquid is merged into a clean dispersion tank;

[0043] 4) Slowly increase the rotation speed to 650r / min, and after stirring for 10 minutes, slowly add 28 parts of polyester resin, 6 parts of amino r...

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Abstract

The invention relates to a reflective coating for an outdoor pre-coated coiled steel plate and a preparation method of the reflective coating. The reflective coating is prepared from the following raw materials: 20-24 parts of polyester resin, 1.5-2.5 parts of a solvent A, 1.5-2.5 parts of a solvent B, 0.3-0.5 parts of a wetting dispersant, 0.2-0.5 parts of silicon dioxide micro powder, 18-20 parts of micron-sized titanium dioxide, 5-8 parts of reflective powder, 0.3-0.6 parts of coloring toner, 5-6 parts of a solvent C, 25-28 parts of polyester resin, 5-6 parts of amino resin, 0.2-0.4 parts of an acid catalyst, 0.8-1.2 parts of a solvent D, 0.5-1 part of a leveling aid and 1-1.5 parts of a solvent A. The reflective coating prepared by the invention is reflective at night while meeting the processing performance of coil steel, so that the attention of people is attracted, and accidents are avoided. Uniform coating can be achieved at a time, and construction is quite easy and convenient. A coating film has rigidity and flexibility, and has excellent processing forming performance and durable stain resistance.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a reflective coating for outdoor pre-coated steel coils and a preparation method thereof. Background technique [0002] In the construction scope of roads, railways, municipal administration, real estate, construction, etc., it is often necessary to use enclosure construction baffles to isolate the construction site. This measure can effectively maintain the city's beauty and ensure people's travel safety. However, in relatively dark places at night, people can easily bump into construction baffles and cause accidents because their vision is obstructed. [0003] Construction baffles are usually formed from pre-coated steel coils, so it is necessary to develop a reflective coating for outdoor pre-coated steel coils. The reflective paint can make the baffle have a reflective function, and can return the direct light from a distance to the original path in a dark place at night to achieve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/02C09D161/32C09D5/33C09D7/62
CPCC09D167/02C09D5/004C09D7/62C09D7/70C08L61/32C08K9/06C08K7/26C08K7/28
Inventor 周龙生肖伽励王元有张信黄佳庆
Owner YANGZHOU POLYTECHNIC INST
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