ASTM F2524-06
(Practice)Standard Practice for Determination of Volatile Content for Formed-in-Place Gaskets (FIPG) Silicone Adhesives and Sealants for Transportation Applications
Standard Practice for Determination of Volatile Content for Formed-in-Place Gaskets (FIPG) Silicone Adhesives and Sealants for Transportation Applications
SCOPE
1.1 This practice covers the quantitative determination of the volatile matter evolved during the curing process of silicone adhesives and sealants for transportation applications.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
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: F2524 − 06
StandardPractice for
Determination of Volatile Content for Formed-in-Place
Gaskets (FIPG) Silicone Adhesives and Sealants for
Transportation Applications
This standard is issued under the fixed designation F2524; 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 chemically reacts, at ambient conditions, with a coreactant
from another part of the FIPG.
1.1 This practice covers the quantitative determination of
3.1.4 radiation-cured FIPG, n—FIPG that contains unre-
the volatile matter evolved during the curing process of
acted monomers or oligomers that are polymerized by expo-
silicone adhesives and sealants for transportation applications.
sure to radiation such as ultraviolet (UV) or microwave.
1.2 The values stated in SI units are to be regarded as the
3.1.4.1 Discussion—Cure conditions and equipment must
standard. The values in parentheses are for information only.
be specified by FIPG manufacturer and shall be used in place
1.3 This standard does not purport to address all of the
of the humidity cure activation. Conditions and equipment
safety concerns, if any, associated with its use. It is the
shall be detailed in the final report.
responsibility of the user of this standard to establish appro-
3.1.5 volatile content, n—Low molecular weight chemicals,
priate safety and health practices and determine the applica-
left unbound by the cured sealant system, which are released
bility of regulatory limitations prior to use.
into the ambient atmosphere.
2. Referenced Documents
4. Summary of Practice
2.1 ASTM Standards:
4.1 This practice is used to determine the volatile content of
D4230 Test Method of Measuring Humidity with Cooled-
silicone adhesives and sealants upon curing for transportation
Surface Condensation (Dew-Point) Hygrometer
applications.
E145 Specification for Gravity-Convection and Forced-
5. Significance and Use
Ventilation Ovens
5.1 The quantity of volatile components in FIPG silicone
3. Terminology
adhesiveandsealantby-productscanbeestablishedbythistest
3.1 Definitions:
method. This test method does not identify the components.
3.1.1 FIPG by-products, n—chemicals that are released
6. Apparatus
during the curing process.
6.1 Humidity Chamber with Temperature Controller—A
3.1.2 formed-in-place gaskets (FIPG), n— one- or two-
forced ventilation oven conforming to the requirements for
component adhesive or sealant applied wet, uncured, to a joint
Type IIA in Specification E145 with humidity control capabil-
surface where the mating parts are assembled before the curing
ity. The oven should be capable of maintaining a temperature
process is complete.
of 40 6 1°C.
3.1.2.1 Discussion—When fully cured, it forms a barrier to
6.1.1 TheovenshallbeequippedwithaNationalInstituteof
media migration across the joint.
Standards and Technology (NIST) traceable calibrated ther-
3.1.3 multicomponent FIPG, n—FIPG that is packaged in
mometer or thermocouple.
two or more parts, which are combined before application, and
6.1.2 The oven temperature shall be controlled by an
upon combination, a coreactant from one part of the adhesive
accurate, reliable thermoregulator, maintaining the set point
within 61.0°C or better.
This practice is under the jurisdiction ofASTM Committee F03 on Gaskets and
6.1.3 The inside of the oven shall be free of contamination
is the direct responsibility of Subcommittee F03.50 on Analytical Test Methods.
or surface deposits. Stainless steel oven liner should be used to
Current edition approved Feb. 1, 2006. Published February 2006. DOI: 10.1520/
reduce corrosion caused by continued exposure to decomposi-
F2524-06.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or tion ga
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