ASTM C1294-07(2011)
(Test Method)Standard Test Method for Compatibility of Insulating Glass Edge Sealants with Liquid-Applied Glazing Materials
Standard Test Method for Compatibility of Insulating Glass Edge Sealants with Liquid-Applied Glazing Materials
SIGNIFICANCE AND USE
Liquid-applied glazing materials, bedding sealants, glazing compounds (that is, glazing sealants) are designed to provide a seal between the IG unit and the window or wall framing. Frequently there is physical contact between these materials and an IG unit edge sealant. Depending on the particular IG unit edge sealant, there can be a detrimental physical or chemical interaction between it and the liquid-applied glazing material. Detrimental effects may include: weakening, softening, hardening, or adhesive failure of the IG edge sealant, or visual obstruction inside the IG unit.
SCOPE
1.1 This test method covers a laboratory procedure for quantitatively measuring the compatibility of liquid-applied glazing materials with an insulating glass unit edge sealant. Compatibility is determined by measuring the changes in the insulating glass edge sealant adhesive and cohesive properties. Hereinafter insulating glass is referred to as IG.
1.2 This test method does not address the issue of the integrity of the hermetic seal or changes to the vision area in an IG unit. Such factors as possible unit fogging or primary sealant reaction in a dual-seal system due to volatile components permeating the IG sealant are not considered in this test method.
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
1.4 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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Standards Content (Sample)
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Designation: C1294 − 07(Reapproved 2011)
Standard Test Method for
Compatibility of Insulating Glass Edge Sealants with Liquid-
Applied Glazing Materials
This standard is issued under the fixed designation C1294; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope compatibility, compound, elongation, glazing, seal, sealant,
substrate.
1.1 This test method covers a laboratory procedure for
quantitatively measuring the compatibility of liquid-applied
4. Summary of Test Method
glazing materials with an insulating glass unit edge sealant.
4.1 This test method includes the measurement of tensile
Compatibility is determined by measuring the changes in the
insulating glass edge sealant adhesive and cohesive properties. force, elongation, and percent cohesive or adhesive failure and
observations of the specimen’s general physical appearance
Hereinafter insulating glass is referred to as IG.
and observation of elongation.
1.2 This test method does not address the issue of the
4.2 Test specimens are exposed to 70°C (158°F) heat for
integrityofthehermeticsealorchangestothevisionareainan
IG unit. Such factors as possible unit fogging or primary fourweekswhilecontactingtheliquid-appliedglazingmaterial
being evaluated.
sealant reaction in a dual-seal system due to volatile compo-
nents permeating the IG sealant are not considered in this test 4.2.1 Control specimens are exposed only to the 70°C
(158°F) heat.
method.
1.3 Thecommitteewithjurisdictionoverthisstandardisnot 4.3 Compatibilityisdeterminedbycomparingthemeasured
and observed properties of the test specimens to the control
aware of any comparable standards published by other orga-
samples.
nizations.
1.4 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
5.1 Liquid-applied glazing materials, bedding sealants,
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- glazing compounds (that is, glazing sealants) are designed to
bility of regulatory limitations prior to use. provide a seal between the IG unit and the window or wall
framing. Frequently there is physical contact between these
2. Referenced Documents
materials and an IG unit edge sealant. Depending on the
particular IG unit edge sealant, there can be a detrimental
2.1 ASTM Standards:
physical or chemical interaction between it and the liquid-
C717Terminology of Building Seals and Sealants
applied glazing material. Detrimental effects may include:
C1265Test Method for Determining the Tensile Properties
weakening, softening, hardening, or adhesive failure of the IG
of an Insulating Glass Edge Seal for Structural Glazing
edge sealant, or visual obstruction inside the IG unit.
Applications
3. Terminology
6. Apparatus and Accessory Materials
3.1 Definitions—Refer to Terminology C717 for definitions
6.1 Oven, forced draft, capable of maintaining a constant
of the following terms: adhesive failure, cohesive failure,
temperature of 70 6 3°C (158 6 5°F).
6.2 Tensile Testing Machine, capable of producing a tensile
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
load on the specimen at the rate of 5 6 0.51 mm (0.2 6 0.02
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
in.) per minute.
General Test Methods.
6.2.1 Fixed Member—A fixed or essentially stationary
Current edition approved Dec. 1, 2011. Published December 2011. Originally
ε1
member carrying one grip.
approved in 1995. Last previous edition approved in 2007 as C1294–07 . DOI:
10.1520/C1294-07R11.
6.2.2 Moveable Member—A moveable member carrying a
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
second grip.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.2.3 Grips—The grips should be suitable to firmly grasp
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the test fixture that holds the test specimen and should be
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C1294 − 07 (2011)
designed to eliminate eccentric specimen loading. Specimen 6.11 Container, a shallow aluminum or glass pan or tray is
loading should be parallel to the centerline of the short axis of suitable.Thecontainermustbelargeenoughtoholdallthetest
the sealant. A swivel or universal joint near each end of the
specimens.Acontainer is required for each combination of IG
specimen should be provided for alignment purposes.
edge sealant and liquid-applied glazing material compound
6.2.4 Grip Fixture—A fixture capable of being held by the
being tested.
grips and furnishing a tensile force to and maintaining proper
alignment with the test specimen.
7. Specimen Preparation
6.3 Spatulas, for use in mixing and applying sealant.
7.1 Prepare a set of five test specimen assemblies for each
6.4 Paper Cup or Can, for use in mixing multicomponent
IG edge sealant or liquid-applied glazing material, or both,
sealants when applicable.
being tested.
6.5 Plastic Cartridge, (Semco), to extrude sealant when
7.2 Construction of the test specimens is done by placing
applicable.
the13by50-mm(0.50by2-in.)IGspacersintotherecessesin
6.6 Triple-Beam or Electronic Balance,accurateto 60.01g
the test fixture. The glass substrates are installed on either side
−4
(3.5 by 10 oz) for weighing multicomponent sealant mixes
of the spacer and the assembly is clamped together with
and finished test specimens.
machine screws through the ends of the side bars. The test
6.7 Glass Substrates, clear float glass, 6 by 25 by 75 mm
fixture holds the samples stationary while the IG edge sealant
(0.25by1by3in.).Atotaloftensubstratesisrequiredforeach
is applied. The IG edge sealant siteline should be approxi-
glazing material tested.
mately 6 mm (0.25 in.) after the specimen is prepared.
6.8 Spacer, nominally 13 mm (0.50 in.) wide IG, aluminum
7.3 Take special car
...
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