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ASTM D5064-07

(Practice)

Standard Practice for Conducting a Patch Test to Assess Coating Compatibility

Standard Practice for Conducting a Patch Test to Assess Coating Compatibility

SIGNIFICANCE AND USE
In performing maintenance of a coating system, the new coating being applied must be compatible with the existing coating. While general guides exist which indicate compatibility of different generic types of coatings, differences in manufacturer’formulation and the condition of the in-place coating may affect compatibility.
SCOPE
1.1 This practice covers the procedures for testing coating compatibility when maintenance of an in-place coating system is being contemplated. It does not cover procedures for assessing the integrity of the existing coating to determine if it can be repainted, nor does it establish the compatibility of the maintenance coating system with the substrate or corrosion products. The practice is intended for use in the field.
Note 1 - Pass-Fail Criteria (for example, adhesion requirements) are not established by this practice. These should be established by the user or specifier with input from the supplier.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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
30-Jun-2007
ICS
25.220.99 - Other treatments and coatings
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.46 - Industrial Protective Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D5064-01 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
Effective Date
01-Jul-2007
Replaced By
ASTM D5064-07(2012) - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
Effective Date
01-Jun-2012
Referred By
ASTM D3276-21 - Standard Guide for Painting Inspectors (Metal Substrates)
Effective Date
01-Jul-2007
Referred By
ASTM E1796-20 - Standard Guide for Selection and Use of Liquid Coating Encapsulation Products for Leaded Paint in Buildings
Effective Date
01-Jul-2007
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
01-Jul-2007
Referred By
ASTM D6237-19 - Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
Effective Date
01-Jul-2007

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ASTM D5064-07 - Standard Practice for Conducting a Patch Test to Assess Coating CompatibilityASTM D5064-07 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
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ASTM D5064-07 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
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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: D5064 − 07
StandardPractice for
1
Conducting a Patch Test to Assess Coating Compatibility
This standard is issued under the fixed designation D5064; 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 Film Thickness of Applied Organic Coatings Using an
Ultrasonic Gage
1.1 This practice covers the procedures for testing coating
D6677 Test Method for Evaluating Adhesion by Knife
compatibility when maintenance of an in-place coating system
D7091 Practice for Nondestructive Measurement of Dry
is being contemplated. It does not cover procedures for
Film Thickness of Nonmagnetic Coatings Applied to
assessing the integrity of the existing coating to determine if it
Ferrous Metals and Nonmagnetic, Nonconductive Coat-
can be repainted, nor does it establish the compatibility of the
ings Applied to Non-Ferrous Metals
maintenance coating system with the substrate or corrosion
D7234 Test Method for Pull-OffAdhesion Strength of Coat-
products. The practice is intended for use in the field.
ings on Concrete Using Portable Pull-Off Adhesion Tes-
NOTE 1—Pass-Fail Criteria (for example, adhesion requirements) are
ters
not established by this practice.These should be established by the user or
specifier with input from the supplier.
3. Terminology
1.2 The values stated in SI units are to be regarded as the
3.1 Definitions—For definitions of terms used in this prac-
standard. The values given in parentheses are for information
tice, refer to Terminology D16.
only.
1.3 This standard does not purport to address all of the 4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
4.1 The materials under test are applied to the previously
responsibility of the user of this standard to establish appro-
painted surface after proper surface preparation. After the
priate safety and health practices and determine the applica-
appropriate time has elapsed, the test patch is examined for
bility of regulatory limitations prior to use.
visual defects and adhesion is determined.
2. Referenced Documents
5. Significance and Use
2
2.1 ASTM Standards:
5.1 In performing maintenance of a coating system, the new
D16 TerminologyforPaint,RelatedCoatings,Materials,and
coating being applied must be compatible with the existing
Applications
coating. While general guides exist which indicate compatibil-
D3359 Test Methods for Measuring Adhesion by Tape Test
ity of different generic types of coatings, differences in
D4138 Practices for Measurement of Dry Film Thickness of
manufacturer’s formulation and the condition of the in-place
Protective Coating Systems by Destructive, Cross-
coating may affect compatibility.
Sectioning Means
D4414 Practice for Measurement of Wet Film Thickness by
6. Procedure
Notch Gages
6.1 Select test locations for evaluation that properly charac-
D4541 Test Method for Pull-Off Strength of Coatings Using
terize differences in configuration of the structure and expo-
Portable Adhesion Testers
sure; that is, vertical versus horizontal surfaces and sheltered
D6132 Test Method for Nondestructive Measurement of Dry
versusunshelteredexposure.Aminimumofthreetestlocations
with one test patch in each is recommended.
6.2 The size of each test patch will be determined by the
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
size and configuration of the test locations. Each test patch
Related Coatings, Materials, and Applications and is the direct responsibility of
2
Subcommittee D01.46 on Industrial Protective Coatings.
shall be as large as possible, with a minimum size of 1.0 m
Current edition approved July 1, 2007. Published July 2007. Originally approved 2
(10.8 ft ) recommended.
in 1990. Last previous edition approved in 2001 as D5064 – 01. DOI: 10.1520/
D5064-07.
6.3 Prepare the surface of the test areas using the methods
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specified for the maintenance painting procedure (Note 2).
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Alternative methods of preparation may also be evaluated in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. separate, adjacent tests.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5064 − 07
NOTE 2—This test method assesses compatibility with the existing
6.9.1 Long-Term Curing—Curing for as long a time as
coating only and does not apply to areas where the substra
...

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5.1 In performing maintenance of a coating system, the new coating being applied must be compatible with the existing coating. While general guides exist which indicate compatibility of different generic types of coatings, differences in manufacturer’s formulation and the condition of the in-place coating system may affect compatibility.
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4.1 Protective coatings are used on metallic and concrete storage and processing vessels, shipping containers, dams and rail cars to protect the substrate from corrosive attack and to protect stored materials (cargo) from contamination. This method provides a means to assess the ability of a protective coating to resist degradation by chemicals and to protect the liquid cargo from contamination by either the substrate or coating, based on visual observations. Other measures of degradation, such as changes in weight or dimensions of the coating material, or chemical changes to the cargo, may be used to assess this protective ability as mutually agreed upon between contracting parties. Simple chemical-resistance evaluations of the lining materials may be performed more conveniently by other pertinent methods as a prescreening test for this procedure in accordance with Test Methods C267 and D471.  
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5.1 This test method is an extension of Test Method D5403. While Test Method D5403 specifies that a test specimen be cured by exposure to UV or EB as prescribed by the supplier of the material, most radiation curable monomers and oligomers provided as raw materials to formulators are not designed to be used alone but rather as blends of monomers and oligomers so that there are no “supplier prescribed” exposure conditions. Test Method D5403 is not appropriate for the measurement of volatiles from thin radiation-curable coatings because supplier prescribed cure conditions include both a thickness and an exposure specification which are difficult or impossible to achieve in a test lab. Furthermore, inks form a special class of thin radiation curable coatings because they are formulated with known interferences (for example, pigments). As a result, Test Method D5403 does not provide a method for measuring volatiles from monomers and oligomers used as raw materials in the formulation of radiation curable coatings nor does it provide a method for measuring volatiles from thin radiation curable coatings such as inks.  
5.2 This test method provides a means to measure the volatile content of individual acrylate monomers, oligomers, and blends commonly used to formulate radiation curable coatings such as printing inks. Such coatings comprise liquid or solid reactants that cure by polymerizing, crosslinking, or a combination of both and are designed to be applied as thin coatings in the absence of water or solvent and to be cured by exposing to ultraviolet radiation. There is currently no direct method for measuring the volatiles from the individual materials used or thin coatings made from them.  
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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.  
1.4 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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Standard Practice for Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings

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5.1 This test procedure is used to simulate the physical and environmental stresses that a coating for exterior transportation applications (for example, automotive) is exposed to in a subtropical climate, such as southern Florida. It has been found that such a subtropical climate causes particularly severe deterioration of such coatings. The long water exposures and wet/dry cycling found in southern Florida are particularly important for this deterioration, in addition to the high dosage of solar radiation (3). This practice was developed to address the deficiencies of historical tests used for transportation coatings, especially automotive coatings (4).
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SCOPE
1.1 This practice specifies the operating procedures for a controlled irradiance xenon arc light and water apparatus. The procedure uses one or more lamp(s) and optical filter(s) to produce irradiance similar to sunlight in the UV and visible range. It also simulates the water absorption and stress cycles experienced by automotive exterior coatings under natural weathering conditions. This practice has also been found applicable to coatings on other transportation vehicles, such as aircraft, trucks and rail cars.  
1.2 This practice uses a xenon arc light source with specified optical filter(s). The spectral power distribution (SPD) for the lamp and special daylight filter(s) is as specified in Annex A1. The irradiance level used in this practice varies between 0.40 and 0.80 W/(m2·nm) at 340 nm. Water is sprayed on the specimens during portions of several dark steps. The application of water is such that the coatings will absorb and desorb substantial amounts of water during testing. In addition, the cycling between wet/dry and warm/cool will induce mechanical stresses into the materials. These test conditions are designed to simulate the physical and chemical stresses from environments in a subtropical climate, such as southern Florida.  
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