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ASTM D3732-82(2017)

(Practice)

Standard Practice for Reporting Cure Times of Ultraviolet-Cured Coatings

Standard Practice for Reporting Cure Times of Ultraviolet-Cured Coatings

SIGNIFICANCE AND USE
4.1 This practice provides a guide whereby all pertinent variables relating to the ultraviolet cure of a coating are described.
SCOPE
1.1 This practice applies to all coatings cured by ultraviolet energy.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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.  
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.

General Information

Status
Historical
Publication Date
31-May-2017
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.55 - Factory Applied Coatings on Preformed Products
Current Stage
Ref Project

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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3732 − 82 (Reapproved 2017)
Standard Practice for
1
Reporting Cure Times of Ultraviolet-Cured Coatings
This standard is issued under the fixed designation D3732; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope D2793 Test Method for Block Resistance of Organic Coat-
ings on Wood Panel Substrates
1.1 This practice applies to all coatings cured by ultraviolet
D2794 Test Method for Resistance of Organic Coatings to
energy.
the Effects of Rapid Deformation (Impact)
1.2 The values stated in SI units are to be regarded as
D3023 Practice for Determination of Resistance of Factory-
standard. No other units of measurement are included in this
Applied Coatings on Wood Products to Stains and Re-
standard.
agents
1.3 This standard does not purport to address all of the
D3281 Test Method for Formability of Attached Organic
safety concerns, if any, associated with its use. It is the Coatings with Impact-Wedge Bend Apparatus (Withdrawn
3
responsibility of the user of this standard to establish appro-
1995)
priate safety and health practices and determine the applica- D3359 Test Methods for Rating Adhesion by Tape Test
bility of regulatory limitations prior to use.
D3363 Test Method for Film Hardness by Pencil Test
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3. Terminology
ization established in the Decision on Principles for the
3.1 Definitions of Terms Specific to This Standard:
Development of International Standards, Guides and Recom-
3.1.1 cure, n—the condition of a coating after conversion to
mendations issued by the World Trade Organization Technical
the final state of cure as measured by tests generally related to
Barriers to Trade (TBT) Committee.
end-use performance and mutually agreeable to supplier and
purchaser.
2. Referenced Documents
3.1.2 ultraviolet curing, n—conversion of a coating from its
2
2.1 ASTM Standards:
application state to its final use state by means of a mechanism
D658 Test Method for Abrasion Resistance of Organic
initiated by ultraviolet radiation generated by equipment de-
3
Coatings by Air Blast Abrasive (Withdrawn 1996)
signed for that purpose.
D968 Test Methods for Abrasion Resistance of Organic
Coatings by Falling Abrasive
4. Significance and Use
D1474 Test Methods for Indentation Hardness of Organic
4.1 This practice provides a guide whereby all pertinent
Coatings
variables relating to the ultraviolet cure of a coating are
D2197 Test Method for Adhesion of Organic Coatings by
described.
Scrape Adhesion
D2336 Guide for Specifying Factory Applied Wood Coat-
5. Procedure
3
ings (Withdrawn 2008)
5.1 Apply the coating to be cured to the desired substrate at
a film thickness typical to that normally used. After approxi-
mately the time delay encountered in production pass the
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
coated substrate through the curing equipment and subse-
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.55 on Factory Applied Coatings on Preformed Products. quently test for cure, as defined in 3.1.1, using the appropriate
Current edition approved June 1, 2017. Published June 2017. Originally
methods listed in 5.1.1 through 5.1.11. The most commonly
approved in 1978. Last previous edition approved in 2011 as D3732 – 82 (2011).
used test methods are listed in 5.1.1 through 5.1.4.
DOI: 10.1520/D3732-82R17.
2
5.1.1 Impact Resistance—Test Method D2794.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.2 Film Hardness—Test Method D3363.
Standards volume information, refer to the standard’s Document Summary page on
5.1.3 Solvent Rub Test—Hold a pad of cheesecloth or other
the ASTM website.
3 cloth saturated with an agreed-upon solvent, usually methyl
The last approved version of this historical standard is referenced on
www.astm.org. ethyl ketone, over two adjacent fingers using a protective
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3732 − 82 (2017)
covering. Rub the wet pad back and forth across a 100-mm 6. Report
portion of the cured film using vigorous pressure, one forward
6.1 Ultraviolet curing equipment is available with several
and one backward movement constituting one d
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3732 − 82 (Reapproved 2011) D3732 − 82 (Reapproved 2017)
Standard Practice for
1
Reporting Cure Times of Ultraviolet-Cured Coatings
This standard is issued under the fixed designation D3732; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This practice applies to all coatings cured by ultraviolet energy.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
3
D658 Test Method for Abrasion Resistance of Organic Coatings by Air Blast Abrasive (Withdrawn 1996)
D968 Test Methods for Abrasion Resistance of Organic Coatings by Falling Abrasive
D1474 Test Methods for Indentation Hardness of Organic Coatings
D2197 Test Method for Adhesion of Organic Coatings by Scrape Adhesion
3
D2336 Guide for Specifying Factory Applied Wood Coatings (Withdrawn 2008)
D2793 Test Method for Block Resistance of Organic Coatings on Wood Panel Substrates
D2794 Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)
D3023 Practice for Determination of Resistance of Factory-Applied Coatings on Wood Products to Stains and Reagents
3
D3281 Test Method for Formability of Attached Organic Coatings with Impact-Wedge Bend Apparatus (Withdrawn 1995)
D3359 Test Methods for Rating Adhesion by Tape Test
D3363 Test Method for Film Hardness by Pencil Test
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 cure, n—the condition of a coating after conversion to the final state of cure as measured by tests generally related to
end-use performance and mutually agreeable to supplier and purchaser.
3.1.2 ultraviolet curing, n—conversion of a coating from its application state to its final use state by means of a mechanism
initiated by ultraviolet radiation generated by equipment designed for that purpose.
4. Significance and Use
4.1 This practice provides a guide whereby all pertinent variables relating to the ultraviolet cure of a coating are described.
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.55 on Factory Applied Coatings on Preformed Products.
Current edition approved June 1, 2011June 1, 2017. Published June 2011June 2017. Originally approved in 1978. Last previous edition approved in 20052011 as
D3732 – 82 (2005).(2011). DOI: 10.1520/D3732-82R11.10.1520/D3732-82R17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D3732 − 82 (2017)
5. Procedure
5.1 Apply the coating to be cured to the desired substrate at a film thickness typical to that normally used. After approximately
the time delay encountered in production pass the coated substrate through the curing equipment and subsequently test for cure,
as defined in 3.1.1, using the appropriate methods listed in 5.1.1 through 5.1.11. The most commonly used test methods are listed
in 5.1.1 through 5.1.4.
5.1.1 Impact Resistance—Impact ResistanceTest —Test Method D2794.
5.1.2 Film Hardness—Film HardnessTest —Test Method D3363.
5.1.3 Solvent Rub Test—Hold a
...

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