A method for detecting the appearance of each coating of a paint composite coating

A composite coating and detection method technology, applied in the detection of the appearance of each coating of the coating composite coating, evaluating the coating in the wet-on-wet application process, evaluating the appearance of each coating in the wet-on-wet process of the coating, in the field of detection, can be Solve problems such as inability to accurately evaluate the appearance of composite coatings, and achieve the effect of improving appearance and accurate evaluation

Active Publication Date: 2020-06-05
LANGFANG NIPPON PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing method evaluates the appearance of the paint film, the appearance data measured by the orange peel meter cannot accurately evaluate the appearance of each coating of the composite coating

Method used

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  • A method for detecting the appearance of each coating of a paint composite coating
  • A method for detecting the appearance of each coating of a paint composite coating
  • A method for detecting the appearance of each coating of a paint composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The solvent-based black paint is painted by 3C2B painting process, and the appearance is improved after painting.

[0030] According to the production site data, in the process of using SP M-180BG41 black color paint (solvent-based) coating, the paint film appearance is worse than the previous batch, and detects according to the detection method of each coating appearance of the coating composite coating of the present invention:

[0031] 1. Use the previous batch of black paint samples for board making and testing:

[0032] Step 1: Substrate treatment: Wipe multiple electrophoresis plates clean with degreasing solvent or alcohol, and paste film thickness strips, one of which is recorded as A1 plate or the first bottom plate, and use a roughness meter to test the A1 plate or the first bottom plate The roughness Ra is measured, and the film thickness of the A1 plate or the first base plate is measured using a film thickness meter (data are shown in Table 1);

[0033]Ste...

Embodiment 2

[0053] When evaluating the appearance of a water-based 3C1B coating, when the overall appearance deteriorates, it is extremely important to find the cause of the deterioration. For the coating constructed by the 3C1B process, the appearance data measured by the orange peel meter is the appearance of the entire composite coating data.

[0054] Detect according to the detection method of each coating appearance of the coating composite coating of the present invention:

[0055] Step 1: Substrate treatment: Wipe the electrophoresis plate clean with degreasing solvent or alcohol, and attach a film thickness strip; use the electrophoresis plate as E plate (the first bottom plate), and measure the roughness Ra and film thickness of the E plate (data as shown in Table 2);

[0056] Step 2: Spray three pieces of AR-620 8105 primer on the E electrophoresis plate, flash dry for 7 minutes, and bake at 80°C for 5 minutes, take out the primer plate E, take one piece of primer and put it in...

Embodiment 3

[0067] Appearance evaluation of waterborne 3C1B topcoat layer composed of two paints:

[0068] When evaluating the appearance of a water-based 3C1B coating, the appearance data measured by the orange peel meter is the appearance data of the entire composite coating. When analyzing the appearance of the paint film, due to the special color of pearlescent white, the entire paint film is composed of five coatings: electrophoretic layer, middle coat, primer, pearlescent paint, and varnish. There are many coatings that affect the overall appearance of the paint film. Traditional appearance measurement methods cannot determine the effect of a specific coating on appearance.

[0069] Detect according to the detection method of each coating appearance of the coating composite coating of the present invention:

[0070] Step 1: Substrate treatment: Wipe the electrophoresis plate clean with degreasing solvent or alcohol, and paste the film thickness strip; use the electrophoresis plate ...

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Abstract

The invention discloses a detection method for the appearance of each coating of a coating composite coating, comprising: the first step: sticking film thickness strips on a plurality of cleaned substrates, taking one piece to measure the roughness and film thickness, which is recorded as The first bottom plate; the second step: take the step 1 to spray the intermediate coating on the substrate except the first bottom plate, take a piece of drying and record it as the first intermediate coating plate, and measure the relevant data; the third step: take the step 2 except the second Spray a topcoat on the intermediate-coated boards other than the first intermediate-coated board and then flash dry, take a test board and dry it, record it as the first-coated board, and measure the roughness and film thickness of the first-coated board; Step 4 : Get step 3 and spray varnish on another test panel except the first surface paint panel, level off, dry, and record it as the first varnish panel, and measure the appearance and varnish film thickness of the first varnish panel; according to the roughness , film thickness and appearance measurement results, and find the coating that affects the appearance of the composite coating by searching layer by layer. The method of the invention can more directly and accurately evaluate the appearance of each coating film.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a method for detecting the appearance of each coating of a coating composite coating, in particular to a method for detecting and evaluating the appearance of each coating in a wet-on-wet coating process, specifically a method for evaluating the appearance of a coating Under the wet-on-wet application process, the method of the appearance and performance of each coating. Background technique [0002] During the use of paint, in order to make the coating film have a better appearance, multiple spraying is generally used to make the appearance of the coating film better, and in the advanced coating process, multi-coat spraying is carried out to give the coated object a bright appearance Color, excellent appearance, excellent performance, etc. For example: when the automotive coating is painted, the electrophoretic coating is generally carried out first, then the intermediate coatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/08G01B21/30
CPCG01B21/08G01B21/30
Inventor 梅鹏杨秋红
Owner LANGFANG NIPPON PAINT
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