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Method for tape friction test of paint film

A test method and test method technology, which is applied in the field of material testing and evaluation, can solve the problems of inability to analyze the friction resistance performance of coatings, human subjective evaluation errors, and inability to record the surface of coatings.

Inactive Publication Date: 2012-11-07
GUANGDONG JANUS SMART GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this test method can only measure and record the number of revolutions when the coating finally breaks through or wears through the limit, but cannot record other parameters of the coating surface during the friction test, and cannot evaluate the friction resistance of the coating. Complete analysis, prone to human subjective evaluation errors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this example, the sample substrate is polycarbonate (PC). After wiping and electrostatic pre-treatment of the polycarbonate (PC) substrate to be sprayed, it is then sprayed to prepare a layer of flat surface Samples of paint films.

[0040] The number of cycles of the paper tape wear tester is adjusted to 10, the paper tape movement speed is 33r / min, the sample is placed on the paper tape wear tester, the coating film faces upwards, and is kept parallel to the horizontal plane; load is applied, and the balance is adjusted rod, so that the gravity pressing on the surface of the paint film is exactly 275g. Start the test button to test, and read the 20° gloss A after the sample is rubbed cyclically for 10 times n ′, 60 ° gloss B after grinding n ’ and post-grinding haze value C n ’, the number of tests for each sample is at least 3.

Embodiment 2

[0042] In this example, the sample base material is silicone rubber. After the silicone rubber base material to be sprayed is wiped and pre-treated by electrostatic dust removal, the surface is then screen-printed to prepare a sample covered with a layer of flat screen-printed paint film.

[0043] The number of cycles of the paper tape wear tester is adjusted to 20, the paper tape movement speed is 33r / min, the sample is placed on the paper tape wear tester, the coating film faces upwards, and is kept parallel to the horizontal plane; load is applied, and the balance is adjusted rod, so that the gravity pressing on the surface of the paint film is exactly 175g. Start the test button to test, and read the 20° gloss A after the sample is rubbed cyclically for 20 times n ′, 60 ° gloss B after grinding n ’ and post-grinding haze value C n ’, the number of tests for each sample is at least 3.

[0044]

Embodiment 3

[0046] In this example, the sample base material is a carbon fiber composite base material. After the carbon fiber composite base material to be sprayed is wiped and pre-treated by electrostatic dust removal, the surface is sprayed, and then non-conductive vacuum coating is carried out to prepare a layer coated with Sample of flat silk screen pattern paint film.

[0047] The number of cycles of the paper tape wear tester is adjusted to 20, the paper tape movement speed is 33r / min, the sample is placed on the paper tape wear tester, the coating film faces upwards, and is kept parallel to the horizontal plane; load is applied, and the balance is adjusted rod, so that the gravity pressing on the surface of the paint film is exactly 275g. Start the test button to test, and read the 20° gloss A after the sample is rubbed cyclically for 20 times n ′, 60 ° gloss B after grinding n ’ and post-grinding haze value C n ’, the number of tests for each sample is at least 3.

[0048] Th...

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PUM

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Abstract

The invention discloses a method for a tape friction test of a paint film. A tape wear resistance test instrument and a frog shadow gloss instrument are adopted for detection. The basic material of the paint film is plastic, rubber, glass or metal. The method comprises the steps of sample production; test instrument adjustment; data test and record; and calculation of the differences between the original 20 degrees gloss An and 20 degrees gloss An' after the polishing, the original 60 degrees gloss Bn and 60 degrees gloss Bn' after the polishing, and the original frog shadow value Cn and the frog shadow value Cn' after the polishing corresponding to each sample recorded in the test, wherein the average value of the three differences in multiple tests and the average value of worn-out revolutions are taken as an evaluation index for the wear resistance performance of the paint film. The method for the tape friction test of the paint film disclosed by the invention can be applied to various materials and used for testing the wear resistance performance of the paint films prepared by various processes; and with the method, the wear resistance performance of the coating can be completely analyzed by detecting the surface gloss and frog shadow value of the coating during the friction test.

Description

technical field [0001] The invention relates to the field of material detection and evaluation, in particular to a paper tape friction test method for a paint film. Background technique [0002] Wear resistance refers to the ability of a material to resist wear under certain friction conditions. Wear phenomenon is very common. There are many physical, chemical and mechanical reasons for this phenomenon, mainly composed of abrasive wear, adhesive wear, fatigue wear, and corrosive wear. Wear resistance is related to almost all properties of materials, and under different wear mechanism conditions, there are different requirements for material properties in order to improve wear resistance. [0003] Abrasion resistance in the coatings industry refers to the resistance of the coating to the mechanical action of friction. In fact, it is the embodiment of the comprehensive effect of hardness, adhesion and cohesion of the coating. Under the same conditions, the wear resistance o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56
Inventor 林智健毕英慧王长明
Owner GUANGDONG JANUS SMART GRP CO LTD
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