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Standard Test Method for Multiangle Color Measurement of Metal Flake Pigmented Materials
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NORM herausgegeben am 1.6.2021
Bezeichnung normen: ASTM E2194-14(2021)
Ausgabedatum normen: 1.6.2021
SKU: NS-1028681
Zahl der Seiten: 9
Gewicht ca.: 27 g (0.06 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
aspecular angle, automotive finishes, far-specular angle, gonioapparent, metal flake, metallic materials, metallic materials paint, mid-specular angle, multiangle spectrophotometer, pearlescent materials,, ICS Number Code 17.180.20 (Colours and measurement of light)
Significance and Use | ||||||||||||||||||
5.1?Instrumental Measurement AnglesThis test method is designed to provide color data at specific measurement angles that can be utilized for quality control, color matching, and formulating in the characterization of metal flake pigmented materials. 5.2?MaterialsThis test method provides meaningful color information for metal flake pigmented materials. This test method has been tested and verified on paint and coatings, and the same principles should apply to plastics containing metallic flake. For materials containing pearlescent materials refer to Test Method E2539. 5.3?UtilizationThis test method is appropriate for measurement and characterization of metal flake pigmented materials. These data may be used for quality control, incoming inspection, or color correction purposes. 5.4?Specimen RequirementsEven though a pair of specimens have the same color values at three angles, if there are differences in gloss, orange peel, texture, or flake orientation, they may not be a visual match. Note 2:?Information presented in this test method is based
upon data taken on metallic materials coatings. Applicability of
this test method to other materials should be confirmed by the
user.
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1. Scope | ||||||||||||||||||
1.1?This test method covers the instrumental requirements, standardization procedures, material standards, and parameters needed to make precise instrumental measurements of the colors of gonioapparent materials. This test method is designed to encompass gonioapparent materials; such as, automotive coatings, paints, plastics, and inks. 1.2?This test method addresses measurement of materials containing metal flake and pigments. The measurement of materials containing metal flakes requires three angles of measurement to characterize the colors of the specimen. The optical characteristics of materials containing pearlescent and interference materials are not covered by this test method. Note 1:?Data taken by utilizing this test method are for
gonio-appearance quality control purposes. This procedure may not
necessarily supply appropriate data for spatial-appearance or
pigment identification.
1.3?The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||||||||||
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