ASTM E866-05
(Specification)Standard Specification for Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels
Standard Specification for Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels
ABSTRACT
This specification covers corrosion-inhibiting adhesive primers for use on aluminum alloys that are to be adhesively bonded in the fabrication of honeycomb sandwich panels for tactical shelters. When applied to a properly cleaned surface of aluminum alloy, the primer imparts corrosion resistance and forms a surface suitable for structural bonding and coating with shelter paint finishes. The primer shall be a pigmented liquid composed of a modified epoxy resin system, compounded so that it can be spray-applied to produce a continuous coating without the addition of any solvent. Uncured primers shall be tested for solids content, inhibitor content, storage stability, shelf life, color, sprayability, and curing properties. Cured films, on the other hand, shall be tested on adhesion to metal, impact resistance, pencil hardness, water resistance, environmental resistance, corrosion resistance, humidity aging, heat resistance, and low-temperature shock. Finally, bonded specimens shall be tested and conform to normal-, low-, and high-temperature lap shears, humidity-exposure lap shear, salt-spray exposure lap shear, and normal- and low-temperature floating roller peel strengths.
SCOPE
1.1 This specification covers sprayable, pigmented liquid primers for use on aluminum alloys that are to be adhesively bonded in the fabrication of honeycomb sandwich panels for tactical shelters. When applied to a properly cleaned surface of aluminum alloy, the primer imparts corrosion resistance and forms a surface suitable for structural bonding using adhesives complying with Specification E 865 and for coating with shelter paint finishes.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E866 – 05
Standard Specification for
Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys
1
to Be Adhesively Bonded in Honeycomb Shelter Panels
This standard is issued under the fixed designation E866; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E865 Specification for Structural Film Adhesives for Hon-
eycomb Sandwich Panels
1.1 This specification covers sprayable, pigmented liquid
E1749 Terminology Relating to Rigid Wall Relocatable
primers for use on aluminum alloys that are to be adhesively
Shelters
bonded in the fabrication of honeycomb sandwich panels for
3
2.2 Federal Specifications:
tacticalshelters.Whenappliedtoaproperlycleanedsurfaceof
QQ-A-250/8d Aluminum Alloy 5052H34, Plate and Sheet
aluminum alloy, the primer imparts corrosion resistance and
QQ-A-250/11d Aluminum Alloy 6061T6, Plate and Sheet
forms a surface suitable for structural bonding using adhesives
complyingwithSpecificationE865andforcoatingwithshelter
3. Materials and Manufacture
paint finishes.
3.1 The primer shall be a pigmented liquid composed of a
1.2 The values stated in SI units are to be regarded as the
modified epoxy resin system, compounded so that it can be
standard. The values given in parentheses are for information
spray-appliedtoproduceacontinuousuniformcoatingwithout
only.
addition of solvent.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Physical Requirements
responsibility of the user of this standard to establish appro-
4.1 The uncured primer must meet the requirements of
priate safety and health practices and determine the applica-
Table1.ThecuredprimermustmeettherequirementsofTable
bility of regulatory limitations prior to use.
2 and Table 3. These requirements shall be verified by tests
2. Referenced Documents described in Section 5.
2 4.2 Properties of Cured Film—When applied and cured in
2.1 ASTM Standards:
accordance with 5.1.7, the cured film shall meet the require-
B117 Practice for Operating Salt Spray (Fog) Apparatus
ments of Table 2 and Table 3 when tested as specified in
B209 Specification for Aluminum and Aluminum-Alloy
5.2-5.3.8.
Sheet and Plate
4.3 Storage Stability—Primer stored in accordance with the
D522 Test Methods for Mandrel Bend Test of Attached
manufacturer’s instructions shall meet the requirements of
Organic Coatings
Table1andwhencuredinaccordancewith5.1.7shallmeetthe
D1002 Test Method forApparent Shear Strength of Single-
requirementsofTable2andTable3whentestedasspecifiedin
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
5.2-5.3.8.
sion Loading (Metal-to-Metal)
4.4 Shelf Life—The shelf life of the primer at 25 6 7°C (77
D3167 Test Method for Floating Roller Peel Resistance of
612°F)shallbeatleastfourdays.Afterfourdays,whentested
Adhesives
in accordance with 5.1.4, the primer shall be capable of
E864 Practice for Surface Preparation ofAluminumAlloys
meeting all of the requirements of this specification.
to Be Adhesively Bonded in Honeycomb Shelter Panels
4.5 Film Thickness—Thefilmthicknessforalltestsshallbe
between 0.003 and 0.007 mm (0.0001 and 0.0003 in.).
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This specification is under the jurisdiction of ASTM Committee E06 on
5. Test Methods
Performance of Buildings and is the direct responsibility of Subcommittee E06.53
on Materials and Processes for Durable Rigidwall Relocatable Structures.
5.1 Uncured Primer:
Current edition approved May 1, 2005. Published May 2005. Originally
5.1.1 Solids Content—Determinethesolidscontentbyheat-
approved in 1982. Last previous edition approved in 2000 as E866–00. DOI:
ing a 5 g sample of thoroughly mixed primer in an aluminum
10.1520/E0866-05.
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 from Standardization Documents Order Desk, DODSSP, Bldg. 4,
the ASTM website. Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E866 – 05
TABLE 1 Physical Properties of Uncured Liquid Primer
5.1.5 Color—Spray the primer onto an aluminum alloy
Test Requirement panel, leaving a portion of the panel bare. Compare the coated
and uncoated areas visually against the color requirements in
Solids content, % 10 6 1
A
Inhibitor Co
...
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