ASTM D5382-02

Standard Guide to Evaluation of Optical Properties of Powder Coatings

SCOPE
1.1 This standard provides the user with a guide to the various available practices and test methods for the evaluation of color, color difference, gloss, and metamerism by both visual and by instrumental means.
1.2 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.

General Information

• Status: Historical
• Publication Date: 09-Jan-2002
• ICS: 25.220.20 - Surface treatment
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.51 - Powder Coatings

Relations

• Replaced By: ASTM D5382-02(2007) - Standard Guide to Evaluation of Optical Properties of Powder Coatings
• Effective Date: 01-Jun-2007

Standards Content (Sample)

Designation: D 5382 – 02
Standard Guide to
1
Evaluation of Optical Properties of Powder Coatings
This standard is issued under the fixed designation D 5382; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
The term optical properties of powder coatings refers to those properties associated with the
interaction of visible light with the coatings. These properties include, but are not limited to, color,
color difference, gloss, and metamerism. Coating powder users and producers may sometimes be
overwhelmed by the sheer number of standard practices and standard test methods available for the
evaluation of the optical properties of the finished coatings.
This guide is intended to lead the user to each of the practices and test methods needed, once the
user decides whether the evaluation is to be by visible means or by instrumental means. Further, the
user must decide which of the several optical properties mentioned above are to be evaluated. This
guide will lead the user to the applicable practices and test methods for the properties chosen by the
means selected.
1. Scope * D 4039 Test Method for Reflection Haze of High-Gloss
2
Surfaces
1.1 This standard provides the user with a guide to the
2
D 4086 Practice for Visual Evaluation of Metamerism
various available practices and test methods for the evaluation
D 4449 Test Method for Visual Evaluation of Gloss Differ-
of color, color difference, gloss, and metamerism by both
2
ences Between Surfaces of Similar Appearance
visual and by instrumental means.
D 5767 Test Methods for Instrumental Measurement of
1.2 This standard does not purport to address all of the
2
Distinctness-of-Image Gloss of Coating Surfaces
safety concerns, if any, associated with its use. It is the
2
E 284 Terminology of Appearance
responsibility of the user of this standard to establish appro-
E 308 Practice for Computing the Colors of Objects by
priate safety and health practices and determine the applica-
2
Using the CIE System
bility of regulatory limitations prior to use.
E 430 Test Methods for Measurement of Gloss of High-
2
2. Referenced Documents Gloss Surfaces by Goniophotometry
E 1247 Test Method for Identifying Fluorescence in Object-
2.1 ASTM Standards:
2
2
Color Specimens by Spectrophotometry
D 523 Test Method for Specular Gloss
E 1331 Test Method for Reflectance Factor and Color by
D 1535 Practice for Specifying Color by the Munsell Sys-
2
2
Spectrophotometry Using Hemispherical Geometry
tem
E 1345 Practice for Reducing the Effect of Variability of
D 1729 Practice for Visual Appraisal of Colors and Color
2
2
Color Measurement by Use of Multiple Measurements
Differences of Diffusely-Illuminated Opaque Materials
E 1347 Test Method for Color and Color–Difference Mea-
D 2244 Test Method for Calculation of Color Differences
2
2
surement by Tristimulus (Filter) Colorimetry
from Instrumentally Measured Color Coordinates
E 1349 Test Method for Reflectance Factor and Color by
D 2616 Test Method for Evaluation of Visual Color Differ-
2
2
Spectrophotometry Using Bidirectional Geometry
ence With a Gray Scale
E 1360 Practice for Specifying Color by Using the Optical
D 3134 Practice for Establishing Color and Gloss Toler-
2
2
Society of America Uniform Color Scales System
ances
E 1541 Practice for Specifying and Matching Color by
2
Using the Colorcurve System
1
This guide is under the jurisdiction of ASTM Committee D01 on Paint and
3. Terminology
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.51 on Powder Coatings.
3.1 The definitions in Terminology E 284 are applicable to
Current edition approved Jan. 10, 2002. Published March 2002. Originally
the appearance terms used in this standard. The following
published as D 5382 – 93. Last previous edition D 5382 – 95.
2
Annual Book of ASTM Standards, Vol 06.01.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D 5382
terms from Terminology E 284 are specific to this standard. 4.3 Color Difference: Practice D 1729 will provide visual
3.2 Definitions of Terms Specific to This Standard: color difference in descriptive terms. If it is desirable to
3.2.1 coating powder(s), n—finely divided particles of quantify the color difference visually, use Test Method D 2616.
resin, either thermoplastic or thermosetting, generally incorpo-
4.4 Metamerism: Carry out visual evaluation of a metameric
rating pigments, fillers, and additives and remaining finely
pair of specimens by Practice D 4086.
divided during storage under suitable conditions, which, after
4.5 Miscellaneous
...