ASTM D2093-03

Standard Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding

SCOPE
1.1 This practice describes surface preparations for plastic adherends, to be used prior to adhesive bonding of test specimens. It should be noted, however, that this practice specifies only the pretreating conditions of the plastic and does not cover the preparation of test specimens, testing conditions, or evaluation of tests. These are covered in the various ASTM test methods or specifications for specific materials.
1.2 Physical Treatments (for example, sanding and solvent wiping) are used in order to remove the glossy finish and all traces of dirt, grease, mold release, or other contaminants from the bonding surfaces.
1.3 Chemical Treatments (for example, sulfuric aciddichromate solution and sodium naphthalene complex) are used in some cases to alter chemically the surface layers of the polymer itself to improve its adhesion characteristics.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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. Specific precautionary statements are given in 6.1.

General Information

• Status: Historical
• Publication Date: 09-Apr-2003
• ICS: 83.180 - Adhesives
• Technical Committee: D14 - Adhesives
• Drafting Committee: D14.40 - Adhesives for Plastics

Relations

• Replaces: ASTM D2093-97 - Standard Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding
• Effective Date: 10-Apr-2003
• Replaced By: ASTM D2093-03(2011) - Standard Practice for Preparation of Surfaces of Plastics Prior to Adhesive Bonding
• Effective Date: 01-Jan-2011
• Referred By: ASTM D3163-01(2023) - Standard Test Method for Determining Strength of Adhesively Bonded Rigid Plastic Lap-Shear Joints in Shear by Tension Loading
• Effective Date: 10-Apr-2003
• Referred By: ASTM D5868-01(2023) - Standard Test Method for Lap Shear Adhesion for Fiber Reinforced Plastic (FRP) Bonding
• Effective Date: 10-Apr-2003
• Referred By: ASTM D2094-00(2023) - Standard Practice for Preparation of Bar and Rod Specimens for Adhesion Tests
• Effective Date: 10-Apr-2003
• Referred By: ASTM D6465-99(2016) - Standard Guide for Selecting Aerospace and General Purpose Adhesives and Sealants
• Effective Date: 10-Apr-2003
• Referred By: ASTM D5041-98(2019) - Standard Test Method for Fracture Strength in Cleavage of Adhesives in Bonded Joints
• Effective Date: 10-Apr-2003
• Referred By: ASTM D3165-07(2023) - Standard Test Method for Strength Properties of Adhesives in Shear by Tension Loading of Single-Lap-Joint Laminated Assemblies
• Effective Date: 10-Apr-2003
• Referred By: ASTM D3164-03(2017) - Standard Test Method for Strength Properties of Adhesively Bonded Plastic Lap-Shear Sandwich Joints in Shear by Tension Loading
• Effective Date: 10-Apr-2003

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:D2093–03
Standard Practice for
Preparation of Surfaces of Plastics Prior to Adhesive
1
Bonding
This standard is issued under the fixed designation D2093; 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 D905 Test Method for Strength Properties of Adhesive
Bonds in Shear by Compression Loading
1.1 This practice describes surface preparations for plastic
D907 Terminology of Adhesives
adherends, to be used prior to adhesive bonding of test
D950 Test Method for Impact Strength of Adhesive Bonds
specimens. It should be noted, however, that this practice
D952 Test Method for Bond or Cohesive Strength of Sheet
specifies only the pretreating conditions of the plastic and does
Plastics and Electrical Insulating Materials
not cover the preparation of test specimens, testing conditions,
D1002 Test Method forApparent Shear Strength of Single-
or evaluation of tests. These are covered in the various ASTM
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
test methods or specifications for specific materials.
sion Loading (Metal-to-Metal)
1.2 Physical Treatments (for example, sanding and solvent
D1193 Specification for Reagent Water
wiping) are used in order to remove the glossy finish and all
D3807 Test Method for Strength Properties ofAdhesives in
traces of dirt, grease, mold release, or other contaminants from
Cleavage Peel by Tension Loading (Engineering Plastics-
the bonding surfaces.
to-Engineering Plastics)
1.3 Chemical Treatments (for example, sulfuric acid—
dichromate solution and sodium naphthalene complex) are
3. Terminology
used in some cases to alter chemically the surface layers of the
3.1 Definitions—Many terms are defined in Terminology
polymer itself to improve its adhesion characteristics.
D907.
1.4 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4. Significance and Use
only.
4.1 This practice is useful for reducing some of the surface
1.5 This standard does not purport to address all of the
variability of plastics (due to differences in manufacturing
safety concerns, if any, associated with its use. It is the
methods) that might otherwise cause excessive variation in the
responsibility of the user of this standard to establish appro-
results of ASTM test methods designed to measure adhesion.
priate safety and health practices and determine the applica-
The treatments specified are convenient for laboratory work.
bility of regulatory limitations prior to use. Specific precau-
4.2 This practice is not necessarily designed to provide
tionary statements are given in 6.1.
optimum adhesion to the surfaces and the treatments specified
may not always be practical for industrial use.
2. Referenced Documents
2 4.3 This practice does not address all of the surface prepa-
2.1 ASTM Standards:
ration methods available; nor does this practice cite all of the
D897 Test Method for Tensile Properties of Adhesive
types or classes of plastics currently available.
Bonds
4.4 This practice is used as a starting point for evaluating
D903 Test Method for Peel or Stripping Strength of Adhe-
surface preparation techniques for plastic adherends prior to
sive Bonds
adhesive bonding.
5. Apparatus
1
This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
5.1 Abrasive, Aluminum Oxide, 320 grit, free of waxes,
and is the direct responsibility of Subcommittee D14.40 on Adhesives for Plastics.
lubricants, or other potential contaminants.
Current edition approved April 10, 2003. Published May 2003. Originally
5.2 Glass Dish, borosilicate, of appropriate dimensions, in
approved in 1962. Last previous edition approved in 1997 as D2093 – 97.
DOI:10.1520/D2093–03.
which to heat the sulfuric acid-dichromate solution.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 Hot Plate to provide a source for heating the acid.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.4 Cotton Cloths, lint-free, clean, white, or non-linting
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. paper wipers.
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D2093–03
TABLE 1 Physical Treatments
Plastic Adherend (Group I) Cleaning Procedure
Cellulose acetate, cellulose acetate butyrate, cellulose nitrate, methylstyrene, poly- Wipe with methanol, sand, wipe with a clean dry cloth, then repeat
carbonate, polystyrene, vinyl chloride, polyme
...