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Test method for weatherability of exterior finishes

A test method and weather resistance technology, which is applied in the field of performance testing of exterior topcoats, can solve the problems of large deviation of test data, high cost, and incompleteness

Active Publication Date: 2018-01-19
ANHUI SKSHU PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the weather resistance of topcoats is mostly tested by artificial aging resistance. This method is used to simulate the aging resistance of topcoats. It can partially reflect the aging resistance of topcoats, but it is not comprehensive enough. Sometimes the measured data is even different from that of natural exposure. The deviation of the test data is large; the cost of equipping a QUV instrument is high, and the cost of sending it to an external inspection agency is high

Method used

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  • Test method for weatherability of exterior finishes
  • Test method for weatherability of exterior finishes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The test object of the present embodiment is a kind of adjustable finish paint with a contrast ratio of 0.89, comprising the following steps:

[0037] Step 1: Batch scraping putty layer: Prepare 4 test panels, scrape putty layer on each test panel and cure for 24 hours, then rinse each test panel with water, and proceed to the next step after the putty layer on each test panel is dry;

[0038] Step 2: Apply primer: apply a primer that matches the topcoat to be tested on the putty layer of each test panel, then let each test panel dry for 18 hours, and proceed to the next step after the primer on each test panel is dry. step;

[0039] Step A: coloring of the topcoat: mixing 96 parts by weight of the topcoat to be tested with 2 parts by weight of color paste to obtain the topcoat to be tested;

[0040] Step B: Apply topcoat: Divide the surface of the test panel into two areas, apply a toned topcoat to be tested in one area, and apply an untinted topcoat to be tested in t...

Embodiment 2

[0056] The test object of the present embodiment is a kind of adjustable finish paint with a contrast ratio of 0.53, comprising the following steps:

[0057] Step 1: Batch scraping putty layer: Prepare 7 test panels, scrape putty layer on each test panel and cure for 36 hours, then rinse each test panel with water, and proceed to the next step after the putty layer on each test panel is dry;

[0058] Step 2: Apply primer: apply a primer that matches the topcoat to be tested on the putty layer of each test panel, then let each test panel dry for 20 hours, and proceed to the next step after the primer on each test panel is dry. step;

[0059] Step A: coloring of the topcoat: mixing 90 parts by weight of the topcoat to be tested with 10 parts by weight of the bright red paste to obtain the topcoat to be tested;

[0060] Step B: Apply topcoat: Divide the surface of the test panel into two areas, apply the toned topcoat to be tested in one area, and apply the non-tinted topcoat to...

Embodiment 3

[0076] The test object of the present embodiment is a kind of non-colorable finish paint, comprises the following steps:

[0077] Step 1: Batch scraping putty layer: Prepare 11 test panels, scrape putty layer on each test panel and cure for 42 hours, then rinse each test panel with water, and proceed to the next step after the putty layer on each test panel is dry;

[0078] Step 2: Apply primer: apply a primer that matches the topcoat to be tested on the putty layer of each test panel, then let each test panel dry for 22 hours, and proceed to the next step after the primer on each test panel is dry. step;

[0079] Step 3: Apply the topcoat to be tested: apply the topcoat to be tested on the primer of each test panel and cure for 144 hours, and proceed to the next step after the topcoat to be tested on each test panel is dry;

[0080] Step 4: Exposure test: Place one test panel in a dark place indoors as a blank control, and place the rest of the test panels on the exposure si...

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Abstract

The invention relates to externally-applied finish paint performance testing, and particularly relates to an externally-applied finish paint weatherability testing method. The method comprises the following steps: step one, putty layer applying: applying a putty layer on each test plate; step two, primer coating: coating the putty layer of each test plate with a primer matched with a to-be-tested finish paint; step three, to-be-tested finish paint coating: coating the primer of each test plate with the to-be-tested finish paint; step four, exposure testing: placing one test plate in an indoor shade place to be used as a control, placing the rest of the test plates in an exposure place for a long time, and performing exposure testing; step five, data recording: in periods of time of the exposure testing of the test plates, testing color difference data, testing glossiness data and evaluating an efflorescence grade; and step six, repeating the step five, and performing at least 7 times of observation recording. The weatherability of different finish paints can be simply and quickly obtained, and the externally-applied finish paint aging conditions can be actually reflected.

Description

technical field [0001] The invention relates to performance testing of exterior topcoats, in particular to a method for testing the weather resistance of exterior topcoats. Background technique [0002] At present, the weather resistance of topcoats is mostly tested by artificial aging resistance. This method is used to simulate the aging resistance of topcoats. It can partially reflect the aging resistance of topcoats, but it is not comprehensive enough. Sometimes the measured data is even different from that of natural exposure. The deviation of the test data is large; the cost of equipping a QUV instrument is high, and the cost of sending it to an external inspection agency for testing is high. The data measured by the natural exposure test method can better reflect the actual use of the topcoat, and it will also become a trend for testing the aging resistance of exterior topcoats in the future. Therefore, it is necessary to develop a simple method for testing the natural...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
CPCG01N17/004
Inventor 洪杰赖李芳
Owner ANHUI SKSHU PAINT CO LTD
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