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    Home > Coatings News > Paints and Coatings Market > Coating process: coating yellowing resistance test

    Coating process: coating yellowing resistance test

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Key tips: 1 The purpose of the test for yellowing resistance of paint and coating: Prevent the use of yellowing resistant paint and improve product quality It is applicable to the inspection of all wood paint coatings 2、 Test method for yellowing resistance of paint: 1 Sample making: White embryo is made of normal product materials and processed by normal paint process The length of the test piece is more than 250mm, the width is more than 150 mm, and the thickness is not less than 12mm At least 3 pieces of each kind of test piece shall be made 2 Operation method: Take more than 3 test pieces, which cannot be fully used first Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: first, paint coating anti yellowing test purpose: to prevent the use of non yellowing resistant paint, improve product quality It is applicable to the inspection of all wood paint coatings 2、 Test method for yellowing resistance of paint: 1 Sample making: white embryo is made of normal product materials and processed by normal paint process The length of the test piece is more than 250mm, the width is more than 150 mm, and the thickness is not less than 12mm At least 3 pieces of each kind of test piece shall be made 2 Operation method: take more than 3 test pieces, first seal a part of the test piece with opaque paper (non test area), then expose to the sun for 4 hours, and then make a test interval every two hours (that is, seal a small test area with opaque paper) During the non test time, ensure that the paint film of the test piece cannot leak light And the height from the ground in the process of time exposure shall not be less than 0.5m Test duration: 18 hours Test weather requirements: during the test, ensure that the test pieces are under the direct sunlight (no clouds and objects block the sunlight) 3 Qualification judgment: in the environment with sufficient natural light, from the place 0.5m away from the test piece, observe with naked eyes from different angles, through comparing the difference between the tested area and the non tested area of the paint coating, it is qualified if there is no obvious discoloration Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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