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Method for testing stain resistance and weather resistance of texture coating

A textured paint, stain-resistant technology, used in weather/light/corrosion resistance, measuring devices, analytical materials, etc. Problems such as low data accuracy, to achieve the effect of convenient naked eye comparison, true and reliable test results, and exclusion of the influence of test results

Active Publication Date: 2019-05-17
CHANGSHU BATF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of textured coatings, the actual environment is very different from the simulated staining and aging environment, and its actual stain resistance and weather resistance are different from the data obtained according to the JG / T 24 test. very big
Moreover, the staining and aging of the textured paint are carried out at the same time in actual use, so the accuracy of the data obtained according to the JG / T 24 test is very low
[0005] CN 105527217 A discloses a test method for the weather resistance of exterior topcoats, which can detect the weather resistance of flat latex paints for exterior use. Compared with JG / T 24, the test results are more accurate, but there are still obvious defects: the test method is in Rinse the test panel with water after scraping the putty layer to remove the alkalinity of the substrate (to prevent efflorescence), and then apply the primer and topcoat. This can only simulate the weather resistance of the topcoat under ideal conditions (the construction is very standardized), and cannot It fully reflects the weather resistance of the topcoat in the actual construction process, because the actual construction cannot avoid non-standard behaviors (such as primer leakage or excessive dilution), and this test method is only applicable to the coating structure that does not need a matching finish varnish (such as: flat latex paint), not suitable for textured paints that require a matching finish varnish

Method used

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  • Method for testing stain resistance and weather resistance of texture coating
  • Method for testing stain resistance and weather resistance of texture coating
  • Method for testing stain resistance and weather resistance of texture coating

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0034] A method for testing the stain resistance and weather resistance of a textured paint, comprising the following steps:

[0035] 1) Add cement to the putty powder (addition amount is 5% of the mass of the putty powder), mix evenly, and set aside;

[0036] 2) In the white texture paint as the standard sample and the white texture paint to be tested, respectively add bright red paste (the addition amount is 0.5% of the quality of the white texture paint), stir evenly, and obtain the colored texture paint and the white texture paint to be tested as the standard sample Colored texture paint, spare;

[0037] 3) Prepare 4 non-asbestos fiber cement boards with a size of 430mm×150mm×4mm as test boards, scrape the putty in step 1) with a thickness of 2mm on the test boards, and place them at a constant temperature of 23-25°C and humidity Constantly dry in the environment of 45% to 55% for 12 hours, and then polish it with sandpaper;

[0038] 4) Divide each test plate into 6 area...

Embodiment 2

[0047] A method for testing the stain resistance and weather resistance of a textured paint, comprising the following steps:

[0048] 1) Add cement to the putty powder (the amount added is 10% of the mass of the putty powder), mix evenly, and set aside;

[0049] 2) Add phthalocyanine blue slurry (the addition amount is 2.5% of the quality of the white texture paint) respectively in the white texture paint as the standard sample and the white texture paint to be detected, and stir evenly to obtain the colored texture paint and the white texture paint as the standard sample. Colored texture paint to be tested, spare;

[0050] 3) Prepare 4 asbestos-free fiber cement boards with a size of 430mm×150mm×5mm as test boards, scrape the putty in step 1) with a thickness of 3mm on the test boards, and place them at a constant temperature of 23-25°C and humidity Constantly dry in the environment of 55%~65% for 24 hours, and then smooth it with sandpaper;

[0051] 4) Divide each test pla...

Embodiment 3

[0060] A method for testing the stain resistance and weather resistance of a textured paint, comprising the following steps:

[0061] 1) Add cement to the putty powder (addition amount is 20% of the mass of the putty powder), mix evenly, and set aside;

[0062] 2) In the white texture paint as the standard sample and the white texture paint to be detected, respectively add bright red paste (the addition amount is 5% of the quality of the white texture paint), stir evenly, and obtain the colored texture paint as the standard sample and the white texture paint to be detected Colored texture paint, spare;

[0063] 3) Prepare 4 asbestos-free fiber cement boards with a size of 430mm×150mm×6mm as test boards, scrape the putty in step 1) with a thickness of 4mm on the test boards, and place them at a constant temperature of 23-25°C and humidity Constantly dry for 48 hours in an environment of 45% to 50%, and then smooth it with sandpaper;

[0064] 4) Divide each test plate into 6 a...

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Abstract

The invention discloses a method for testing the stain resistance and weather resistance of texture coating. The method comprises the following steps that (1) putty powder is prepared; (2) four test plates are prepared, and putty powder applying and polishing are conducted; (3) each test plate is equally divided into an area A, an area B, an area C, an area D, an area E and an area F, the areas A,the areas B, the areas C and the areas D are coated with seal primer, the areas A and the areas B of two of the test plates are selected are coated with master standard white texture coating, the areas C, the areas D, the areas E and the areas F of two of the test plates are coated with to-be-tested white texture coating, the areas A and the areas B of the other two test plates are coated with master standard colored texture coating, the areas C, the areas D, the areas E and the areas F of the another two test plates are coated with to-be-tested colored texture coating, and then the areas B,the areas C and the areas F of all the test plates are coated with finishing varnish; and (4) exposure testing and track recording are conducted, and the stain resistance and the weather resistance are evaluated. According to the method, actual outdoor performance, comprising the stain resistance, yellowing resistance, color retention and gloss retention, of the texture coating can be truly reflected, operation is easy and convenient, data are true and reliable, and all aspects of the situations of actual construction are considered.

Description

technical field [0001] The invention relates to a method for testing the stain resistance and weather resistance performance of a textured paint, belonging to the technical field of paint quality detection. Background technique [0002] Texture (art) paint is a personalized and fashionable painting system for modern exterior wall painting. It uses white sand of different meshes and color pastes of different colors for modeling and toning, and has a unique three-dimensional effect. , rough surface and vibrant colors. However, the rough surface is easy to be stained, and the bright colors made by the color paste are easy to fade, so the stain resistance and weather resistance (including color retention, yellowing resistance and gloss retention) test of the texture coating is very important . [0003] During the construction of textured paint, the construction manual generally requires that the putty layer be scraped and cured (rinsed 1 to 2 times with clean water) to reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 张仁波蓝茂仁赖宁余勇
Owner CHANGSHU BATF TECH CO LTD