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Demonstration method of formaldehyde removal paint film formaldehyde removal effect

A demonstration method, paint technology, applied in the field of architecture and decoration, can solve the problem of paint aldehyde removal effect that is unfavorable for the aldehyde removal function, and achieve the effect of benefiting marketing display, good specificity and selectivity, and strengthening the understanding of functions

Active Publication Date: 2016-10-19
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing method needs to be tested in a closed space of one cubic meter, and requires more than 7 days of testing time, and finally calculated by spectrophotometry, which is not conducive to quickly demonstrating to consumers in the showroom that it claims to have the function of removing aldehydes Aldehyde removal effect of paint

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0014] A method for demonstrating the formaldehyde-removing paint film formaldehyde-removing effect of a paint film, comprising the following steps:

[0015] (1) Prepare the sample to be tested: use an electronic scale to weigh the paint to be tested and distilled water to mix evenly according to the weight ratio of 90-110:10-30, and then paint the mixture evenly on the sample plate; two hours After painting for the second time, paste the filter paper on the paint film in a wet state after painting, and make the sample to be tested after the paint is dried by itself or heated at room temperature to make the paint dry;

[0016] (2) Use a dropper to pipette two to three drops of potassium periodate reagent onto the filter paper embedded in the sample to be tested, and then immediately use another dropper to pipette two to three drops of the formaldehyde dilution to be used Drop on the filter paper embedded in the sample to be tested, and then completely cover the filter paper wi...

Embodiment 1

[0022] Embodiment 1: A method for demonstrating the effect of removing formaldehyde from a paint film of a formaldehyde removal paint, comprising the following steps:

[0023] (1) Prepare the sample to be tested: use an electronic scale to weigh 100 grams of paint with aldehyde removal function and 20 grams of distilled water and mix them evenly, and then paint the mixture evenly on the asbestos cement board with a wool brush; Paint the second time after an hour. After painting, in the wet state of the paint film, paste filter paper cut into 4cm×4cm squares on it respectively, and paste them in a parallel matrix according to the size of the asbestos cement board. The distance is ≥4cm, heat the paint to dry quickly and then make the sample to be tested.

[0024] (2) Place the prepared sample to be tested above on the table, pipette two to three drops of potassium periodate reagent on the filter paper embedded in the sample to be tested with a dropper, and then immediately use a...

Embodiment 2

[0026] Embodiment 2: A method for demonstrating the effect of removing formaldehyde from a paint film of a formaldehyde removal paint, comprising the following steps:

[0027] (1) Prepare the sample to be tested: use an electronic scale to weigh 100 grams of paint with aldehyde removal function and 20 grams of distilled water and mix them evenly, and then paint the mixture evenly on the asbestos cement board with a wool brush; Paint the second time after an hour. After painting, in the wet state of the paint film, paste filter paper cut into 4cm×4cm squares on it respectively, and paste them in a parallel matrix according to the size of the asbestos cement board. The distance is ≥4cm, and after drying at room temperature for 7 days, make a test sample for testing (this sample can be prepared in advance); use an electronic scale to weigh 100 grams of ordinary paint without aldehyde removal function and 20 grams of distilled water and mix them evenly , and then apply the mixture...

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Abstract

The invention relates to a method for demonstrating the effect of formaldehyde-removing coatings and paint films on removing aldehydes. The chemical reaction of the demonstration method in the invention is based on the AHMT method for measuring formaldehyde: by coating a sample plate to be tested with a paint with a aldehyde-removing function and without a aldehyde-removing function After the coating is dried, formaldehyde and AHMT (4-amino-3-hydrazine-5-mercapto-1,2,4-triazol) are condensed under alkaline conditions and oxidized by potassium periodate to form Fuchsia compound, and then a method for colorimetric quantitative detection of formaldehyde content. The method for demonstrating the formaldehyde-removing paint film formaldehyde-removing effect of the present invention can demonstrate the formaldehyde-removing effect of the paint film with the formaldehyde-removing function through color change and contrast within ten minutes, and can give customers a quick and intuitive demonstration , and then strengthen the understanding of the function of coatings with aldehyde removal effect, which is conducive to marketing display.

Description

technical field [0001] The invention belongs to the field of architecture and decoration, in particular to a method for demonstrating the formaldehyde-removing effect of a paint film for removing formaldehyde. Background technique [0002] At present, the latex paints on the market in China that claim to have anti-formaldehyde functional effects must meet the requirements of the building materials industry standard of the People's Republic of China: Purification performance of coating materials with indoor air purification function JC / T1074-2008. Among them, the formaldehyde purification rate must reach at least 75%, and the long-term purification rate of formaldehyde must reach at least 60%. However, the existing method needs to be tested in a closed space of one cubic meter, and requires more than 7 days of testing time, and finally calculated by spectrophotometry, which is not conducive to quickly demonstrating to consumers in the showroom that it claims to have the funct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 洪杰王东南
Owner SKSHU PAINT
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