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ASTM D5064-95

(Practice)

Standard Practice for Conducting a Patch Test to Assess Coating Compatibility

Standard Practice for Conducting a Patch Test to Assess Coating 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 inch-pound 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
09-May-2001
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

Replaced By
ASTM D5064-01 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
Effective Date
10-May-2001
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
10-May-2001
Referred By
ASTM D3276-21 - Standard Guide for Painting Inspectors (Metal Substrates)
Effective Date
10-May-2001
Referred By
ASTM D6237-19 - Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
Effective Date
10-May-2001
Referred By
ASTM E1796-20 - Standard Guide for Selection and Use of Liquid Coating Encapsulation Products for Leaded Paint in Buildings
Effective Date
10-May-2001

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ASTM D5064-95 - Standard Practice for Conducting a Patch Test to Assess Coating CompatibilityASTM D5064-95 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
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ASTM D5064-95 - 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 discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5064 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Conducting a Patch Test to Assess Coating Compatibility
This standard is issued under the fixed designation D 5064; 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.
1. Scope 3. Terminology
1.1 This practice covers the procedures for testing coating 3.1 Definitions—For definitions of terms used in this prac-
compatibility when maintenance of an in-place coating system tice, refer to the Federation of Societies for Coatings Technol-
is being contemplated. It does not cover procedures for ogy (FSCT) Paint/Coatings Dictionary.
assessing the integrity of the existing coating to determine if it
4. Summary of Test Method
can be repainted, nor does it establish the compatibility of the
maintenance coating system with the substrate or corrosion 4.1 The materials under test are applied to the previously
painted surface after proper surface preparation. After the
products. The practice is intended for use in the field.
appropriate time has elapsed, the test patch is examined for
NOTE 1—Pass-Fail Criteria (for example, adhesion requirements) are
visual defects and adhesion is determined.
not established by this practice. These should be established by the user or
specifier with input from the supplier.
5. Significance and Use
1.2 The values stated in inch-pound units are to be regarded
5.1 In performing maintenance of a coating system, the new
as the standard. The values given in parentheses are for
coating being applied must be compatible with the existing
information only.
coating. While general guides exist which indicate compatibil-
1.3 This standard does not purport to address all of the
ity of different generic types of coatings, differences in
safety concerns, if any, associated with its use. It is the
manufacturer’s formulation and the condition of the in-place
responsibility of the user of this standard to establish appro-
coating will affect compatibility.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Procedure
6.1 Select test locations for evaluation that properly charac-
2. Referenced Documents
terize differences in configuration of the structure and expo-
2.1 ASTM Standards:
sure; that is, vertical versus horizontal surfaces and sheltered
D 1186 Test Methods for Nondestructive Measurement of
versus unsheltered exposure. A minimum of three test locations
Dry Film Thickness of Nonmagnetic Coatings Applied to
with one test patch in each is recommended.
a Ferrous Base
6.2 The size of each test patch will be determined by the
D 1400 Test Method for Nondestructive Measurement of
size and configuration of the test locations. Each test patch
Dry Film Thickness of Nonconductive Coatings Applied to
shall be as large as possible, with a minimum size of 10
a Nonferrous Metal Base
2 2
ft (0.93 m ) recommended.
D 3359 Test Methods for Measuring Adhesion by Tape
6.3 Clean the surface of the test areas using the methods
Test
specified for the maintenance painting procedure (Note 2).
D 4138 Test Method for Measurement of Dry Film Thick-
Alternative methods of preparation may also be evaluated in
ness of Protective Coating Systems by Destructive Means
separate, adjacent tests.
D 4414 Practice for Measurement of Wet Film Thickness by
NOTE 2—This test method assesses compatibility with the existing
Notch Gages
coating only and does not apply to areas where the substrate is exposed by
D 4541 Test Method for Pull-Off Strength of Coatings
the methods of preparation.
Using Portable Adhesion Testers
6.4 Measure the existing coating thickness in accordance
with Test Methods D 1186, D 1400, or D 4138, as appropriate
for the substrate.
This practice is under the jurisdiction of ASTM Committee D-1 on Paint and
6.5 Measure the ambient conditions and surface temperature
Related Coatings, Materials, and Applications and is the direct responsibility of
and assure the conditions are within the limits specified by the
Subcommittee D01.46 on Industrial Protective Coatings.
coa
...

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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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1.1 This practice establishes procedures for the evaluation of the resistance of industrial protective coatings to immersion in chemicals.  
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ASTM D7767-11(2018)(Test Method)
Standard Test Method to Measure Volatiles from Radiation Curable Acrylate Monomers, Oligomers, and Blends and Thin Coatings Made from Them

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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.  
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1.1 This test method describes a means to determine the percentage of processing, potential, and total volatiles from radiation curable acrylate monomers, oligomers, and blends. The results can be used to estimate the volatiles from thin radiation curable coatings that cannot otherwise be measured with the restriction that those coatings are not subjected to a pre-exposure water or solvent drying step. It also provides a means to determine the volatiles of thin radiation curable coatings in the absence of known interferences such as pigments in inks.  
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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.
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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ASTM D7869-17(Practice)
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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).
Note 1: This test procedure was developed through eight years of cooperative testing between automotive and aerospace OEM’s, material suppliers, and test equipment manufacturers. See References for published papers on this research.
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.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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