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Description of ASTM-D7489 2013ASTM D7489 - 09(2013)Standard Practice for Evaluating Touch-Up Properties of Architectural Coatings under Various Environmental ConditionsActive Standard ASTM D7489 | Developed by Subcommittee: D01.42 Book of Standards Volume: 06.02 ASTM D7489Significance and Use 5.1 During construction of a home, paints are subjected to a wide variety of drying conditions, and this may exhibit differences between the original coat and the touched-up area in appearance after its full cure. Therefore, it it essential for the paint to be able to perform under a wide variety of drying conditions. A paint that does this is very advantageous to the contractor. 5.2 It is possible for a paint to have excellent color touch-up, but poor sheen touch-up, or vice-versa. The ideal paint will have both excellent color and sheen touch-up under testing conditions. 5.3 Color, gloss and base choice can have a major impact on touch-up of the paint. 1. Scope 1.1 This practice determines the ability of a paint to be recoated or touched up in small areas. Variations in color, gloss, and sheen that result in a different appearance from the original paint can be evaluated visually. 1.2 This practice describes evaluation of touch-up characteristics in a laboratory-scale controlled environment as opposed to a full-scale field environment. 1.3 Evaluation of touch-up properties under constant drying conditions is described. Environmental conditions can be adjusted to incorporate high or low temperature drying , or both. The changes in application temperature can lead to larger differences in touch-up than applying both coats under the same environmental conditions. 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 and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards D344 Test Method for Relative Hiding Power of Paints by the Visual Evaluation of Brushouts D523 Test Method for Specular Gloss D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products D1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials D5068 Practice for Preparation of Paint Brushes for Evaluation D5069 Practice for Preparation of Paint-Roller Covers for Evaluation of Architectural Coatings D6762 Test Method for Determining the Hiding Power of Paint by Visual Evaluation of Spray Applied Coatings E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry Keywords color difference; latex paint; sheen difference; touch-up; ICS Code ICS Number Code 87.040 (Paints and varnishes) DOI: 10.1520/D7489 ASTM International is a member of CrossRef. ASTM D7489This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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