ASTM E865-99e1
(Specification)Standard Specification for Structural Film Adhesives for Honeycomb Sandwich Panels
Standard Specification for Structural Film Adhesives for Honeycomb Sandwich Panels
SCOPE
1.1 This specification covers film adhesives for bonding of honeycomb sandwich panels used in tactical shelters. The adhesives are used for new production or depot repair. The adhesives shall be suitable for forming bonds that can withstand long exposures to temperatures from -55 to 93°C (-67 to 200°F) and also withstand the combinations of stress, temperature, and relative humidity expected to be encountered in service. The adhesives shall be used for bonding aluminum alloy facing to nonmetallic core, edge attachments, and other components of a sandwich panel.
1.2 The values stated in SI units are to be regarded as the standard where only SI units are given or where SI units are given first followed by inch-pound units; where inch-pound units are given first followed by SI units, the inch-pound units are to regarded as the standard.
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: E 865 – 99 An American National Standard
Standard Specification for
Structural Film Adhesives for Honeycomb Sandwich Panels
This standard is issued under the fixed designation E 865; 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.
This standard has been approved for use by agencies of the Department of Defense.
e NOTE—The title of E 1826 was editorially corrected in August 2000.
1. Scope Honeycomb Shelter Panels
E 874 Practice for Adhesive Bonding of Aluminum Facings
1.1 This specification covers film adhesives for bonding of
to Nonmetallic Honeycomb Core for Shelter Panels
honeycomb sandwich panels. The adhesives are used for new
E 1091 Specification for Nonmetallic Honeycomb Core for
production or depot repair. The adhesives shall be suitable for
Use in Shelter Panels
forming bonds that can withstand long exposures to tempera-
E 1826 Specification for Low Volatile Organic Compound
tures from −55 to 93°C (−67 to 200°F) and also withstand the
(VOC) Corrosion-Inhibiting Adhesive Primer for Alumi-
combinations of stress, temperature, and relative humidity
num Alloys to Be Adhesively Bonded
expected to be encountered in service. The adhesives shall be
2.2 Federal Specifications:
used for bonding aluminum alloy facing to nonmetallic core,
MMM-A-132 Adhesive, Heat-Resistant, Airframe Struc-
edge attachments, and other components of a sandwich panel.
tural, Metal-to-Metal
1.2 The values stated in SI units are to be regarded as the
QQ-A-250/8d Aluminum Alloy 5052H34, Plate and Sheet
standard where only SI units are given or where SI units are
QQ-A-250/11d Aluminum Alloy 6061T6, Plate and Sheet
given first followed by inch-pound units; where inch-pound
units are given first followed by SI units, the inch-pound units
NOTE 1—Copies of specifications, standards, drawings, and publica-
are to regarded as the standard. tions required by suppliers in connection with specific purchases shall be
obtained from the purchaser or as directed by his contracting officer.
2. Referenced Documents
3. Ordering Information
2.1 ASTM Standards:
3.1 Procurement Documents—Purchasers shall select any
B 117 Practice for Operating Salt Spray (Fog) Apparatus
of the desired options offered herein and the procurement
C 297 Test Method for Tensile Strength of Flat Sandwich
documents shall specify the following:
Constructions in Flatwise Plane
3.1.1 Title, number, and date of this specification,
D 1002 Test Method for Apparent Shear Strength of Single-
3.1.2 Adhesive type and code number,
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
3.1.3 Amounts and unit quantities of adhesives required,
sion Loading (Metal-to-Metal)
3.1.4 Length, width, and film weight of adhesive,
D 1781 Test Method for Climbing Drum Peel for Adhe-
3.1.5 Curing conditions,
sives
3.1.6 Level of packaging and packing required, and
D 2919 Test Method for Determining Durability of Adhe-
3.1.7 Whether or not qualification (see 3.2) is necessary.
sive Joints Stressed in Shear by Tension Loading
3.2 Qualification—In the case of adhesives for which the
D 3167 Test Method for Floating Roller Peel Resistance of
purchaser requires qualification, the procurement documents
Adhesives
shall state that awards will be made only for adhesives that are,
E 864 Practice for Surface Preparation of Aluminum Alloys
at the time set for opening of bids, qualified for inclusion in the
to Be Adhesively Bonded in Honeycomb Shelter Panels
applicable qualified products list.
E 866 Specification for Corrosion-Inhibiting Adhesive
Primer for Aluminum Alloys to Be Adhesively Bonded in
4. Requirements
4.1 Material—The adhesive shall be thermosetting and,
This specification is under the jurisdiction of ASTM Committee E-6 on
when tested using the tests described in Section 5, shall meet
Performance of Buildings and is the direct responsibility of Subcommittee E06.53
the strength and durability requirements of this specification.
on Materials and Processes for Durable Rigidwall Relocatable Structures.
Current edition approved Oct. 10, 1999. Published December 1999. Originally
The adhesive shall not have a deleterious effect on the metal
published as E 865 – 82. Last previous edition E 865 – 95.
Annual Book of ASTM Standards, Vol 03.02.
Annual Book of ASTM Standards, Vol 15.03.
4 6
Annual Book of ASTM Standards, Vol 15.06. Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Annual Book of ASTM Standards, Vol 04.11. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
E 865
surfaces being bonded over the range of temperatures at which mine the maximum temperature and the storage period at this
the adhesives will be used. temperature (from date of manufacture) for which the adhe-
4.2 Form and Film Weight—The adhesive shall be film sive, when stored in airtight containers or wrapped in suitable
form and shall consist either entirely of adhesive or of a carrier vapor barriers, will retain its ability to meet the strength
impregnated with adhesive. The film weight shall be within the requirements specified in Table 1. These storage conditions
range specified in Table 1. shall be stated in the instruction sheet (see 6.3.1.1).
4.3 Appearance—The adhesive film shall be uniform in 4.7 Mechanical Properties—The average mechanical prop-
appearance. It shall be of a uniform coating that is free of erties of the adhesive shall meet the requirements of Table 1.
streaks and color variations.
5. Test Methods
4.4 Qualification—At the option of the purchaser, the ad-
5.1 Qualification Tests—For qualification, the adhesive
hesive may be required to be a product (see 6.3) for listing on
shall be tested using the tests described in this section. Shear
the applicable qualified products list at the time set for opening
tests shall be performed in accordance with Test Method
of bids. The qualification shall only apply to the formulation on
D 1002.
which qualification tests have been made. Any changes by the
5.2 Preparation of Test Specimens—Prepare at least ten
manufacturer, such as the adding of fillers, changing the carrier,
specimens for each separate test except as otherwise specified
changing the method of manufacture, or changing the mass per
in the individual test methods. The metal bonded shall be
unit area, shall be cause for designating the adhesive as a new
6061T6 or 5052H34 aluminum alloy (Federal Specification
product. The new product shall be given a new code number
QQ-A-250/11d or QQ-A-250/8d, respectively) cleaned as de-
and shall not be approved until it has been shown to meet the
scribed in Practice E 864 and at the purchasers option, primed
requirements of the specification.
in accordance with Specification E 866 or Specification
4.5 Working Characteristics:
E 1826. Time and temperature of curing of the adhesive shall
4.5.1 Application—The adhesive shall be suitable for appli-
be in accordance with the adhesive manufacturer’s most recent
cation to metal facings and core materials in accordance with
recommendation. Test panels or specimens, or both, other than
the manufacturer’s instructions at temperatures between 18 and
the breakaway type shall be cut in such a manner that minimum
30°C (65 and 85°F) and at relative humidities of up to 50 %.
vibration or heat is generated during the cutting operation.
4.5.2 Curing—The time, temperature, and pressure used to
5.3 Normal-Temperature Lap Shear—Subject specimens to
cure the adhesive shall be within the range specified herein.
a lap shear test at normal temperature 25 6 3°C (776 5°F).
4.5.2.1 Curing Time and Temperature—The adhesive shall
5.4 High-Temperature Lap Shear—Test specimens at 60 6
meet the requirements of this specification when cured for not
3°C (140 6 5°F) and 93 6 3°C (2006 5°F). Bring the
longer than1hata bond line temperature not exceeding 145°C
specimen to temperature as indicated by a thermocouple at the
(293°F).
bond area and stabilize for 10 min just prior to test. Stabilize
4.5.2.2 Curing Pressure—In the preparation of specimens
the chamber used to test the specimens at the test temperature
fabricated for qualification, the pressure required for curing the
for 45 min prior to testing.
adhesive shall not be less than 140 kPa (20 psi) nor more than
5.5 Low-Temperature Lap Shear—Test specimens at −55 6
350 kPa (50 psi).
3°C (−67 6 5°F). Bring the specimen to temperature as
4.6 Storage Life—The adhesive manufacturer shall deter-
indicated by a thermocouple at the bond area and stabilize for
TABLE 1 Physical Requirements for the Film Adhesive
10 min just prior to test. Stabilize the chamber used to test the
A
Test Requirement
specimens at the test temperature for 45 min prior to testing.
5.6 Humidity Exposure Lap Shear—Test lap shear speci-
Film weight, kg/m2 (lb/ft ) 0.405 to 0.480 (0.083 to
0.100)
mens at 93 6 3°C (200 6 5°F) after 2 weeks’ exposure to 95
Normal-temperature lap shear, MPa (psi) 20 (2903)
6 5 % relative humidity and 936 3°C (200°F 6 5°F). Bring
High-temperature lap shear, MPa (psi)
60°C (140°F) 20 (2903) the specimen to temperature as indicated by a thermocouple at
93°C (199°F) 13 (1888)
the bond area and test within 2 min. The test chamber used to
Low-temperature lap shear, MPa (psi) 20 (2903)
test the specimens shall be stabilized at the test temperature for
Humidity exposure lap shear, MPa (psi) 5 (723)
Salt spray exposure lap shear, MPa (psi) 16 (2322) at least 45 min prior to testing. Start the test of each humidity
Normal-temperature floating roller peel, N/m 4400 (25.1)
exposure lap shear test spe
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