ASTM C1442-03

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Designation: C 1442 – 03
Standard Practice for
Conducting Tests on Sealants Using Artificial Weathering
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Apparatus
This standard is issued under the fixed designation C 1442; 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 for Exposure of Nonmetallic Materials
2.2 ISO Standard:
1.1 This practice covers three types of laboratory weather-
ISO 11431 Building Construction—Sealants: Determina-
ing exposure procedures for evaluating the effect of actinic
tion of Adhesion/Cohesion Properties After Exposure to
radiation, heat, and moisture on sealants.
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Heat and Artificial Light Through Glass and to Moisture
1.2 The exposure sources used in the three types of artificial
weathering devices are the filtered xenon arc, fluorescent
3. Terminology
ultravioletlamps,andopenflamecarbonarcbasedonPractices
3.1 Definitions—Definitions of the following terms are
G 155, G 154, and G 152, respectively.
found in Terminology C 717: compound, cure, sealant, sub-
1.3 The values stated in SI units are to be regarded as the
strate. Definitions of the following terms are found in Termi-
standard. The values given in parentheses are provided for
nology G113: actinic radiation, control material, file speci-
information only.
men, fluorescent ultraviolet lamps, irradiance, radiant
1.4 The ISO standard related to this Practice is ISO 11431.
exposure, sample, solar radiation-ultraviolet, solar radiation-
Significant differences exist between the procedures. The ISO
visible, spectral power distribution, xenon arc.
specimensareexposedthroughglassandareelongatedpriorto
examination for loss of adhesion or cohesion, or both, follow-
4. Summary of Practice
ing exposure.
4.1 The test sealant may be applied to a variety of types of
1.5 This standard does not purport to address all of the
substratesortestedasafreefilm.Theconfigurationdependson
safety concerns, if any, associated with its use. It is the
the properties to be evaluated following exposure.At least four
responsibility of the user of this standard to establish appro-
replicates of each sealant being tested are required. After
priate safety and health practices and determine the applica-
curing, one replicate of each sealant being tested is retained as
bility of regulatory limitations prior to use.
an unexposed file specimen and three replicates are exposed to
actinicradiation,heat,andmoisture.Attheendoftheexposure
2. Referenced Documents
2 period, the test sealant is examined for property change in
2.1 ASTM Standards:
comparison with the unexposed file specimen and the perfor-
C 717 Terminology of Building Seals and Sealants
mance is compared with that of an exposed control material, if
G113 Terminology Relating to Natural and Artificial
used.
Weathering Tests of Nonmetallic Materials
4.2 It is recommended that a similar material of known
G 151 Practice for Exposing Nonmetallic Materials in Ac-
performance under use conditions (a control) be exposed
celerated Test Devices That Use Laboratory Light Sources
simultaneously with the test specimen for evaluation of the
G 152 PracticeforOperatingOpenFlameCarbonArcLight
performance of the test materials relative to that of the control
Apparatus for Exposure of Nonmetallic Materials
under the same laboratory exposure conditions. It is preferable
G 154 Practice for Operating Fluorescent Light Apparatus
tousetwocontrolmaterials,onewithrelativelypoordurability
for UV Exposure of Nonmetallic Materials
and the other with good durability.
G 155 Practice for Operating Xenon Arc Light Apparatus
5. Significance and Use
5.1 This practice determines the effects of actinic radiation,
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This practice is under the jurisdiction of ASTM Committee C24 on Building
elevated temperature, and moisture on sealants and their
Seals and Sealants and is the direct responsibility of Subcommittee C24.40 on
Weathering. constituents under controlled laboratory artificial weather test
Current edition approved Dec. 1, 2003. Published January 2004. Originally
conditions.
approved in 1999. Last previous edition approved in 1999 as C 1442 – 99.
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 Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
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C1442–03
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