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ASTM D6583-04

(Test Method)

Standard Test Method for Porosity of Paint Film by Mineral Oil Absorption

Standard Test Method for Porosity of Paint Film by Mineral Oil Absorption

SIGNIFICANCE AND USE
The porosity of a paint film is closely related to the important practical characteristics of stain resistance, abrasion resistance, durability, and the hold-out of any paint subsequently applied.
This test provides a precise means for evaluating and comparing the quality of paint films, insofar as it pertains to porosity as determined on a coating applied to a nonporous substrate. Porosity measured using this test method may not be an accurate predictor of coating porosity when the coating is applied to substrate of higher absorption characteristics.
Unlike current Test Method D 3258 Porosity of Paint Films, which is effective only with light colored paints, this test method is equally effective with paints of any color, both dark and light. Also unlike Test Method D 3258, its results are not influenced by the hiding characteristics of the paint film.
SCOPE
1.1 This test method is applicable to air-dry architectural coatings of any type, both solvent and water-borne, and of any color, dark as well as light. It cannot be used with films that are dissolved or excessively softened by mineral oil, but practical examples of such films will be encountered rarely, if ever.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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
31-May-2004
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.42 - Architectural Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D6583-00 - Standard Test Method for Porosity of Paint Film
Effective Date
01-Jun-2004
Replaced By
ASTM D6583-04(2010) - Standard Test Method for Porosity of Paint Film by Mineral Oil Absorption
Effective Date
01-Feb-2010
Referred By
ASTM D5324-16(2022) - Standard Guide for Testing Water-Borne Architectural Coatings
Effective Date
01-Jun-2004

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ASTM D6583-04 - Standard Test Method for Porosity of Paint Film by Mineral Oil AbsorptionASTM D6583-04 - Standard Test Method for Porosity of Paint Film by Mineral Oil Absorption
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ASTM D6583-04 - Standard Test Method for Porosity of Paint Film by Mineral Oil Absorption
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D6583–04
Standard Test Method for
1
Porosity of Paint Film by Mineral Oil Absorption
This standard is issued under the fixed designation D6583; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope removed in a specified manner. The test panel is then re-
weighed to determine the amount of mineral oil absorbed.
1.1 This test method is applicable to air-dry architectural
4.3 Porosity is calculated from the weight ratio of absorbed
coatings of any type, both solvent and water-borne, and of any
oil to dry paint film and from previously determined values of
color, dark as well as light. It cannot be used with films that are
non-volatile and density for the whole paint.
dissolved or excessively softened by mineral oil, but practical
examples of such films will be encountered rarely, if ever.
5. Significance and Use
1.2 The values stated in SI units are to be regarded as the
5.1 The porosity of a paint film is closely related to the
standard. The values given in parentheses are for information
important practical characteristics of stain resistance, abrasion
only.
resistance, durability, and the hold-out of any paint subse-
1.3 This standard does not purport to address all of the
quently applied.
safety concerns, if any, associated with its use. It is the
5.2 This test provides a precise means for evaluating and
responsibility of the user of this standard to establish appro-
comparing the quality of paint films, insofar as it pertains to
priate safety and health practices and determine the applica-
porosity as determined on a coating applied to a nonporous
bility of regulatory limitations prior to use.
substrate. Porosity measured using this test method may not be
2. Referenced Documents an accurate predictor of coating porosity when the coating is
2
applied to substrate of higher absorption characteristics.
2.1 ASTM Standards:
5.3 Unlike current Test Method D3258 Porosity of Paint
D1475 Test Method For Density of Liquid Coatings, Inks,
Films,whichiseffectiveonlywithlightcoloredpaints,thistest
and Related Products
method is equally effective with paints of any color, both dark
D2369 Test Method for Volatile Content of Coatings
and light. Also unlike Test Method D3258, its results are not
D3258 Test Method for Porosity of White or Near White
influenced by the hiding characteristics of the paint film.
Paint Films by Staining
6. Apparatus and Materials
3. Terminology
6.1 Bird Type Film Applicator, 150-mm wide with a clear-
3.1 Definitions:
ance of 150 µm.
3.1.1 porosity, n—presence of numerous minute voids in a
6.2 Bird Type Film Applicator, 150-mm wide with a clear-
cured material; that is, the fraction of air by volume in the dry
ance of 100 µm.
film.
6.3 Vacuum Drawdown Plate.
3
4. Summary of Test Method
6.4 Test Panel.
6.5 Mineral Oil, specific gravity 0.8200 to 0.8350; viscosity
4.1 The test paint is applied to a preweighed nonporous
6.5 to 7.8 cSt at 40°C.
panel, air dried, then reweighed to obtain the weight of the
6.6 Absorbent Wipers.
film.
4.2 Mineral oil is applied to the surface of the paint film,
7. Procedure
allowed to absorb for a fixed period of time, and the excess
7.1 Weigh each test panel to the nearest milligram. Record
as W .
p
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint 7.2 Place the test panel on the vacuum plate and apply the
and Related Coatings, Materials, andApplications and is the direct responsibility of
paint under test with the 150-µm clearance drawdown blade.
Subcommittee D01.42 on Architectural Coatings.
CurrenteditionapprovedJune1,2004.PublishedJuly2004.Originallyapproved
in 2000. Last previous edition approved in 2000 as D6583 – 00. DOI: 10.1520/
3
D6583-04. Transparency film AF 4300, from 3M Visual Systems Division, Austin, TX
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 78726-4599 was used in this test method. If you are aware of alternative suppliers,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM please provide this information to ASTM International Headquarters. Your com-
Standards volume information, refer to the standard’s Document Summary page on ments will receive careful consideration at a meeting of the responsible technical
1
the ASTM website. committee, which you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6583–04
Remove the test panel from the vacuum plate and air dry as 48 8.3 Weight Ratio of absorbed Oil to Dry Paint Film:
h u
...

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