ASTM D6736-08
(Test Method)Standard Test Method for Burnish Resistance of Latex Paints
Standard Test Method for Burnish Resistance of Latex Paints
SIGNIFICANCE AND USE
Interior flat paints may become burnished in areas where clothing or upholstered furniture rub against a wall. This rubbing may cause a smoother, glossier surface at the contacted area, depending on the level or type of pigments in the paint and binder hardness. This method permits a more quantitative estimate of burnish resistance than those using manual rubbing techniques.
SCOPE
1.1 This test method covers a procedure for measuring the resistance of latex paints to burnishing under dry conditions.
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.
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Designation: D6736 − 08
StandardTest Method for
1
Burnish Resistance of Latex Paints
This standard is issued under the fixed designation D6736; 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* final gloss readings, divided by the initial reading times 100 is
a quantitative indication of the paint’s resistance to burnishing.
1.1 This test method covers a procedure for measuring the
Higher percentage increases denote poorer resistance and
resistance of latex paints to burnishing under dry conditions.
vice-versa.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information 5. Significance and Use
only.
5.1 Interiorflatpaintsmaybecomeburnishedinareaswhere
1.3 This standard does not purport to address all of the
clothing or upholstered furniture rub against a wall. This
safety concerns, if any, associated with its use. It is the
rubbingmaycauseasmoother,glossiersurfaceatthecontacted
responsibility of the user of this standard to establish appro-
area, depending on the level or type of pigments in the paint
priate safety and health practices and determine the applica-
and binder hardness. This method permits a more quantitative
bility of regulatory limitations prior to use.
estimate of burnish resistance than those using manual rubbing
techniques.
2. Referenced Documents
2 6. Apparatus
2.1 ASTM Standards:
D523 Test Method for Specular Gloss 6.1 Constant temperature/humidity room 23 6 2°C (73.5 6
D2486 Test Methods for Scrub Resistance of Wall Paints 3.5°F); 50 6 5 % relative humidity (standard conditions,
D3924 Specification for Environment for Conditioning and Specification D3924).
Testing Paint, Varnish, Lacquer, and Related Materials
6.2 Washability Machine (Scrub Machine),describedinTest
Methods D2486.
3. Terminology
6.2.1 Accessory Apparatus:
3.1 Definitions:
6.2.1.1 Sandpaper Attachment, total weight 454 g.
3.1.1 burnish resistance, n—the ability of a coating to resist
6.2.1.2 Glass Plate, measured to fit.
an increase in its gloss (sheen) value after polishing or rubbing.
6.2.1.3 Gasket Frame and Clamps.
6.3 Large Vacuum Plate.
4. Summary of Test Method
6.4 Film Caster, having a 0.18-mm (7.0-mil) clearance.
4.1 Test paints are drawn down lengthwise on plastic panels
using a 0.18-mm (7.0-mil) applicator and allowed to air-dry for 6.5 Glossmeter(s), capable of measuring 60° and 85° gloss
one week. Gloss readings are taken at three equally spaced
in accordance with Test Method D523.
points, lengthwise along the center of the panel. The panel is
7. Materials
thenrubbedfor20cyclesonascrubmachine,afterwhichgloss
readings are again taken along the same path abraded by the
7.1 Plastic Scrub Panels, 43.5 by 16.5 mm (17 by 6.5 in.),
scrub machine. The initial values are averaged and the final
white or black.
values are averaged. The difference between the initial and
3
7.2 Cheesecloth, 4-ply, medium weave.
8. Procedure
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of 8.1 Application and Evaluation of Test Paints:
Subcommittee D01.42 on Architectural Coatings.
8.1.1 Attach a plastic panel to the vacuum plate and draw
Current edition approved Feb. 1, 2008. Published March 2008. Originally
down the test paint uniformly lengthwise, using the 0.18-mm
approved in 2001. Last previous edition approved in 2001 as D6736 - 01. DOI:
(7.0-mil) side of the applicator.
10.1520/D6736-08.
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
3
Standards volume information, refer to the standard’s Document Summary page on Bleached cheesecloth, grade 20B, 24/20 (medium) weave was used in devel-
the ASTM website. oping this method.
*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 ----------------------
D6736 − 08
8.1.2 Condition the panels for one week in the constant Test Method D6736. Each of six laboratories tested the burnish
temperature / humidity room or under other conditions agreed resistance of latex paints. The percentage of gloss increase was
upon between the buyer and seller. determined for a total of five different paints, with three
8.1.3 Take three equally spaced gloss readings (Test Method replicates of the analysis being performed on each sample.
D523) along the center length of th
...
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:D6736–01 Designation:D6736–08
Standard Test Method for
1
Burnish Resistance of Latex Paints
This standard is issued under the fixed designation D 6736; 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*
1.1 This test method covers a procedure for measuring the resistance of latex paints to burnishing under dry conditions.
1.2
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.
2. Referenced Documents
2.1 ASTM Standards:
D 523 Test Method for Specular Gloss
D 2486 Test Methods for Scrub Resistance of Wall Paints
D 3924 Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
3. Terminology
3.1 Definition:
3.1.1 burnish resistanceburnish resistance, n—the ability of a coating to resist an increase in its gloss (sheen) value after
polishing or rubbing.
4. Summary of Test Method
4.1 Test paints are drawn down lengthwise on plastic panels using a 0.18-mm (7.0-mil) applicator and allowed to air-dry for
one week. Gloss readings are taken at three equally spaced points, lengthwise along the center of the panel. The panel is then
rubbed for 20 cycles on a scrub machine, after which gloss readings are again taken along the same path abraded by the scrub
machine. The initial values are averaged and the final values are averaged. The difference between the initial and final gloss
readings, divided by the initial reading times 100 is a quantitative indication of the paint’s resistance to burnishing. Higher
percentage increases denote poorer resistance and vice-versa.
5. Significance and Use
5.1 Interior flat paints may become burnished in areas where clothing or upholstered furniture rub against a wall. This rubbing
may cause a smoother, glossier surface at the contacted area, depending on the level or type of pigments in the paint and binder
hardness. This method permits a more quantitative estimate of burnish resistance than those using manual rubbing techniques.
6. Apparatus
6.1 Constant temperature/humidity room 23 6 2°C (73.5 6 3.5°F); 50 6 5 % relative humidity (standard conditions,
Specification D 3924).
6.2 Washability Machine (Scrub Machine), described in Test Methods D 2486.
6.2.1 Accessory Apparatus:
6.2.1.1 Sandpaper Attachment, total weight 454 g.
6.2.1.2 Glass Plate, measured to fit.
6.2.1.3 Gasket Frame and Clamps.
6.3 Large Vacuum Plate.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.42 on Architectural Coatings.
Current edition approved Dec. 10, 2001. Published February 2002.
Current edition approved Feb. 1, 2008. Published March 2008. Originally approved in 2001. Last previous edition approved in 2001 as D 6736 - 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 ----------------------
D6736–08
6.4 Film Caster, having a 0.18-mm (7.0-mil) clearance.
6.5 Glossmeter(s), capable of measuring 60° and 85° gloss in accordance with Test Method D 523.
7. Materials
7.1 Plastic Scrub Panels, 43.5 mm 3 by 16.5 mm (17 in. 3by 6.5 in.), white or black.
2
7.2 Cheesecloth, 4-ply, medium weave.
8. Procedure
8.1 Application and Evaluation of Test Paints:
8.1.1 Attachaplasticpaneltothevacuumplateanddrawdownthetestpaintuniformlylengthwise,usingthe0.18-mm(7.0-mil)
side of the applicator.
8.1.2 Condition the panels for one week in the constant temperature / humidity room or under other conditions agreed upon
between the buyer and seller.
8.1.3 Take three equally spaced gloss readings (Test Method D 523) along the center length of the panel, making sure the areas
of the readings are within the travel path of the scrub machine attachment. The resulting average of the three readings is used as
the initial value prior to r
...
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