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How much do you know about Coating colorants performance testing?

Abstract: 涂料色浆是一种高浓缩的配方，用于调整涂料的颜色和效果，其质量对色彩精度和涂层品质尤为重要。性能检测包括色差、色泽稳定性、流动性、粘度和稳定性等指标。常用检测方法有色差计、粘度计、离心试验等，这些测试可以评估色浆的色彩一致性、流动性能及稳定性。确保涂料色浆的高品质和稳定性是提升涂层效果和降低成本的重要手段。

Paint color paste is a highly concentrated paint formula, which is composed of pigments, fillers, dispersants, thinners and other ingredients, which can be mixed and formulated with the base paint in proportion to achieve the desired color and effect. Paint color pastes are widely used in construction, furniture, automobiles, electrical appliances and other fields, providing more color choices and customized services, and also have the advantages of saving costs and improving effectiveness. The quality and stability of paint colorants have an important impact on color accuracy and coating quality, so quality inspection and control are required.

Paint color paste needs to test the following properties:

performanceTest items
chromatic aberrationColor difference value between paint color paste and standard color sample
Color stabilityColor stability of paint color paste, such as color change, layering, precipitation, etc.
fluidityFlow properties of paint colorants, such as drying time, leveling, etc.
viscosityViscosity of paint paste
stabilityStability of paint color paste, such as suspension, sedimentation, etc.
otherSuch as anti-sedimentation and hiding power of paint color paste, etc.


Detection method:

  1. Color difference: Use color difference meter, optical wavelength meter and other equipment to test the color difference value between the paint color paste and the standard color sample.

  2. Color stability: Test the color stability of the paint color paste by artificial aging test, constant temperature and humidity test and other methods.

  3. Fluidity: Test the fluidity of paint colorants by backFlow Cup method, diffusion cup method and other methods.

  4. Viscosity: Use viscometer, rheometer and other equipment to test the viscosity of paint color paste.

  5. Stability: test the stability of paint color paste by centrifugal test, sedimentation test and other methods.

  6. Others: According to the specific type of paint color paste and testing items, select the appropriate test method and equipment for testing, such as testing the sedimentation resistance and hiding power of the paint color paste.

The results of these test items can help evaluate the quality and suitability of the paint color paste, and how it will perform in the actual application. The test methods and equipment vary according to the specific types of paint colorants and test items. The performance test of paint color paste needs to be carried out in accordance with relevant standards and methods to ensure the accuracy and comparability of test results.

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