ASTM D3468/D3468M-99(2013)e1
(Specification)Standard Specification for Liquid-Applied Neoprene and Chlorosulfonated Polyethylene Used in Roofing and Waterproofing
Standard Specification for Liquid-Applied Neoprene and Chlorosulfonated Polyethylene Used in Roofing and Waterproofing
SCOPE
1.1 This specification covers liquid-applied neoprene and chlorosulfonated polyethylene synthetic rubber solutions suitable for use in roofing and waterproofing.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 The following precautionary caveat pertains only to the test method portion, Section 9, of this specification: This standard does not purport to address 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:D3468/D3468M −99 (Reapproved 2013)
Standard Specification for
Liquid-Applied Neoprene and Chlorosulfonated
Polyethylene Used in Roofing and Waterproofing
This standard is issued under the fixed designation D3468/D3468M; 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.
ε NOTE—Units information was editorially corrected in July 2013.
1. Scope D471Test Method for Rubber Property—Effect of Liquids
D711Test Method for No-Pick-Up Time of Traffic Paint
1.1 This specification covers liquid-applied neoprene and
D823Practices for Producing Films of Uniform Thickness
chlorosulfonated polyethylene synthetic rubber solutions suit-
of Paint, Coatings and Related Products on Test Panels
able for use in roofing and waterproofing.
D1149TestMethodsforRubberDeterioration—Crackingin
1.2 The values stated in either SI units or inch-pound units
an Ozone Controlled Environment
are to be regarded separately as standard. The values stated in
D1640Test Methods for Drying, Curing, or Film Formation
each system may not be exact equivalents; therefore, each
of Organic Coatings
system shall be used independently of the other. Combining
D1644Test Methods for Nonvolatile Content of Varnishes
values from the two systems may result in non-conformance
D1824Test Method forApparentViscosity of Plastisols and
with the standard.
Organosols at Low Shear Rates
1.3 The following precautionary caveat pertains only to the E96/E96MTest Methods for Water Vapor Transmission of
test method portion, Section 9, of this specification: This
Materials
standard does not purport to address all of the safety concerns,
2.2 Department of Commerce Voluntary Product Standard:
if any, associated with its use. It is the responsibility of the user
PS-1Construction and Industrial Plywood
of this standard to establish appropriate safety, health, and
environmental practices and determine the applicability of
3. Classification
regulatory limitations prior to use.
3.1 Type I—Neoprene synthetic rubber solutions for use
1.4 This international standard was developed in accor-
alone or in combination with chlorosulfonated polyethylene
dance with internationally recognized principles on standard-
synthetic rubber solutions:
ization established in the Decision on Principles for the
3.1.1 Grade 1—Neoprene rubber solution.
Development of International Standards, Guides and Recom-
3.1.2 Grade 2—Fiber-modified neoprene rubber solution.
mendations issued by the World Trade Organization Technical
3.2 Type II—Chlorosulfonated polyethylene synthetic rub-
Barriers to Trade (TBT) Committee.
ber solutions.
2. Referenced Documents
4. Materials and Manufacture
2.1 ASTM Standards:
4.1 The designated polymer shall comprise 100% of the
D412TestMethodsforVulcanizedRubberandThermoplas-
elastomer and a minimum of 60% of the nonvolatile content.
tic Elastomers—Tension
D429Test Methods for Rubber Property—Adhesion to
4.2 The designated polymer shall be homogeneously com-
Rigid Substrates
pounded with pigments, extenders, stabilizers, antidegradants,
and curatives. The product shall be free from graininess, gel
particles, and foreign materials.
This specification is under the jurisdiction of ASTM Committee D08 on
RoofingandWaterproofingandisthedirectresponsibilityofSubcommitteeD08.09
5. Physical Requirements
on Bituminous Emulsions.
Current edition approved May 16, 2006. Published July 2013. Originally
5.1 The material shall conform to the physical properties
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approved in 1975. Last previous edition approved in 2006 as D3468–99 (2006) .
prescribed in Table 1.
DOI: 10.1520/D3468_D3468M-99R13E01.
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’s Document Summary page on Available from the Superintendent of Documents, U. S. Government Printing
the ASTM website. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D3468/D3468M−99 (2013)
TABLE 1 Physical Properties of Neoprene and Chlorosulfonated Polyethylene Synthetic Rubber Solutions
and Cured Films
Type I (Neoprene)
Type II (Chlorosulfonated
Polyethylene)
Property Grade 1 Grade 2
min max min max min max
Synthetic rubber solutions:
A
Solids, weight % ±2 % of the qualification value
A
±20 % of the qualification value
Viscosity, mPa·s [cP]
Drying time, h:
Dry-to-touch . 4 . 12 . 4
Dry hard . 16 . 24 . 24
Solids, volume % 20 . 20 . 20 .
Cured films:
Tensile strength, MPa [psi] 11 [1600] . 4.8 [700] . 4.8 [700] .
Elongation at 23 ± 2°C 450 . 450 . 350 .
[73.4 ± 3.6°F], %
Elongation at −18 ± 2°C 120 . 120 . 120 .
[−0.4 ± 3.6°F], %
Permanent set at break, % . 50 . 50 . 50
Elongation of aged film at 23 ± 2°C 100 . 100 . 200 .
[73.4 ± 3.6°F], %
Water absorption, % . 4.0 . 4.0 . 4.0
Water vapor permeability, ng/Pa·s·m [perm-inches] . 0.0146 . 0.0146 . 0.0146
[0.010] [0.010] [0.010]
Ozone resistance . . . . no cracks under 10×
magnification
Adhesion, kN/m [lbf/in.] width 3.5 [20] . 1.8 [10] . . .
A
Qualification value is that agreed upon between the seller and purchaser.
6. Sampling 8.3 Prepare 0.75-mm [30-mil] wet film specimens for de-
termination of solids, percent by volume, on a release surface
6.1 The sample shall be a 1-L [1-qt] aliquot consisting of a
approximately 75 by 150 mm [3 by 6 in.].
composite taken, when possible, from three or more separate
8.4 Prepare cured film specimens for all tests except adhe-
containers chosen at random. Samples shall also be taken from
siononreleasepaper approximately250by350mm[10by14
any other containers that appear to be nonrepresentative and
in.].Adjustthedoctorbladetoproduceawetfilmthatwillgive
shall be tested separately. Before a sample is withdrawn, the
a total dry film thickness of approximately 0.40 mm [15 mils]
contents in the container shall be mixed to uniform consis-
aftertwoapplications.Drythespecimensfor24hat23 62°C
tency. The sample shall be placed immediately in an airtight
[73.4 6 3.6°F] and 50 6 5% relative humidity, and then cure
glass jar or metal can until tested.
them in accordance with the coating manufacturer’s instruc-
tions. Condition the cured specimens for 72 h at 23 6 2°C
7. Retest and Rejection
[73.4 6 3.6°F] before carefully stripping the film from the
release paper.
7.1 If the results of any test do not conform to the require-
ments of this specification, retesting to establish conformity
8.5 Prepare cured film specimens for the adhesion test on
may be performed as agreed upon between the purchaser and
the A face of a 13-mm [ ⁄2-in.] exterior grade plywood sheet
the seller. conforming to the requirements ofVoluntary Product Standard
PS-1,approximately225by450by6mm[9by18by ⁄4 in.],
with 150 mm [6 in.] at one end covered by kraft paper. Use
8. Specimen Preparation
strips of cellophane pressure-sensitive tape along each edge of
8.1 PrepareallfilmspecimensinaccordancewithMethodD
the kraft paper to ensure smooth, tight contact with the
of Test Methods D823. Take care to prevent puddling and
plywood sheet. Prepare a primer consisting of one part of the
keep specimens horizontal at all times. When more than one
test coating and two parts of xylene, well stirred together.
coat is required, allow each to dry to touch prior to application
Brush-apply a coat of primer to the plywood sheet including
of subsequent coats.
the paper-covered end, and allow to dry to touch. Then apply
8.2 Prepare 0.25-mm [10-mil] wet film specimens for de-
terminationofdryingtimeonglassplates,approximately15by
Trifoil TFE-fluorocarbon-coated aluminum foil tape applied to a flat surface
75 mm. [ ⁄8 by 3 in].
such as glass has been found to be satisfactory. T
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