Method for detecting alkali burnout resistance of priming coat

An anti-pan-alkali, primer technology, used in measuring devices, instruments, scientific instruments, etc., can solve problems such as affecting the progress of experiments and reducing the efficiency of new product development, saving development time, reducing development costs, and easy to achieve. Effect

Active Publication Date: 2012-08-22
LANGFANG NIPPON PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the above method, it takes at least 9-10 days from the plate making, drying, foaming plate at the beginning of the experiment to the completion of the whole experiment, which affects the progress of the experiment and greatly reduces the development efficiency of new products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Scrape the putty on a cement board of 1000mm×1000mm, the scraping time of the putty is 1 hour, and dry for 3 hours at a temperature of 35°C and a relative humidity of 70%; then brush 1 on the basis of the above putty #Primer paint sample, the brushing time of described primer is 0.5 hour, and the brushing thickness of primer is the brushing thickness during actual construction, is that temperature dries 2 hours under the condition of 35 ℃ and relative humidity 70%; Then A blue topcoat with 50% PVC was applied by brushing, the brushing time of the topcoat was 0.5 hour, and the temperature was 35° C. and the relative humidity was 70% and dried for 1 hour. Observed with the naked eye after 0.5 hours, on the paint film surface of the blue topcoat, white alkaline substances ooze out. Among them, the putty, topcoat and 1# primer samples used are all supporting products, and the total time required to complete the test is about 8.5 hours.

Embodiment 2

[0021] Scrape the putty on a 1000mm×1000mm cement board, the scraping time of the putty is 1 hour, and dry for 3 hours at a temperature of 35°C and a relative humidity of 70%; then brush on the above putty for 2 #Primer paint sample, the brushing time of described primer is 0.5 hour, and the thickness of brushing is consistent with the thickness of primer brushing in embodiment 1, is then dried 2 hours under the condition of 35 ℃ and relative humidity 70% at temperature Then brush the blue topcoat that PVC is 50%, and the brushing time of described topcoat is 0.5 hour, is dried 1 hour under the condition that temperature is 35 ℃ and relative humidity 70%. Observed with the naked eye after 0.5 hours, no white alkaline substances ooze out on the paint film surface of the blue topcoat. Among them, the putty, topcoat and 2# primer samples used are all supporting products, and the total time required to complete the test is about 8.5 hours.

Embodiment 3

[0023] Scrape the putty on a 1000mm×1000mm cement board, the scraping time of the putty is 1 hour, and it is dried for 3 hours at a temperature of 35°C and a relative humidity of 70%; then brush 3 hours on the basis of the above putty #Primer paint sample, the brushing time of described primer is 0.5 hour, and the thickness of brushing is consistent with the thickness of primer brushing in embodiment 1, is then dried 2 hours under the condition of 35 ℃ and relative humidity 70% at temperature Then brush the blue topcoat that PVC is 50%, and the brushing time of described topcoat is 0.5 hour, is dried 1 hour under the condition that temperature is 35 ℃ and relative humidity 70%. Observed with the naked eye after 0.5 hours, on the paint film surface of the blue topcoat, serious white alkaline substances ooze out. Among them, the putty, topcoat and 3# primer samples used are all supporting products, and the total time required to complete the test is about 8.5 hours.

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PUM

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Abstract

The invention provides a method for detecting an alkali burnout resistance of a priming coat, which includes the following steps of applying putty on an experimental plate in batch, brushing and coating the priming coat after the putty is dried, brushing and coating a finishing coat after the priming coat is dried, and observing the oozy degree of white alkaline substances on the paint film surface of the finishing coat through naked eyes, wherein the drying steps of the putty, the priming coat and the finishing coat are performed under the conditions that the temperature is in a range from 35 DEG C to 45 DEG C and the relative humidity is 60-90%, and the pigment volume concentration of the finishing coat is 40-60%. According to the method for detecting the alkali burnout resistance of the priming coat, detection results can be observed in a short time, the development time of novel products is greatly saved, the work efficiency of the development of the novel products is increased, the development cost of the novel products is lowered, besides, the method is simple in operation and easy to implement.

Description

technical field [0001] The invention relates to a method for detecting pan-alkaline resistance of a primer. Background technique [0002] Paints are classified according to the level of use, and are divided into primers, middle coats, top coats, putty and so on. Usually, when painting paint, first scrape the putty on the surface to make a primer, after the putty is dry, sand it with sandpaper to level it, brush the primer once, and then apply the topcoat after the primer is dry. In interior decoration, the walls to be painted have a certain degree of alkalinity, and the putty is also very alkaline. Therefore, it is necessary to brush the primer once to seal the alkalinity of the wall and putty. If the anti-pan alkalinity of the primer is good, the alkaline substance will not penetrate into the surface of the topcoat, and the phenomenon of blooming will not be seen on the wall after painting (that is, the white alkaline substance oozes out of the wall). ); if the anti-pan a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 马文杰
Owner LANGFANG NIPPON PAINT
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