ASTM D6105-04

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Designation:D6105–04
Standard Practice for
Application of Electrical Discharge Surface Treatment
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(Activation) of Plastics for Adhesive Bonding
This standard is issued under the fixed designation D6105; 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 2. Referenced Documents
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1.1 This practice covers various electrical discharge treat- 2.1 ASTM Standards:
ments to be used to enhance the ability of polymeric substrates D724 Test Method for Surface Wettability of Paper (Angle-
to be adhesively bonded. This practice does not include of-Contact Method)
additional information on the preparation of test specimens or D907 Terminology of Adhesives
testing conditions as they are covered in the variousASTM test D1868 Test Method for Detection and Measurement of
methods or specifications for specific materials. Partial Discharge (Corona) Pulses in Evaluation of Insu-
1.2 The types of discharge phenomena that are used for lation Systems
surface modification of polymers fit into the general category D2578 Test Method for Wetting Tension of Polyethylene
of nonequilibrium or non-thermal discharges in which electron and Polypropylene Films
temperature (mean energy) greatly exceeds the gas tempera- D2651 Guide for Preparation of Metal Surfaces for Adhe-
ture. sive Bonding
1.3 The technologies included in this practice are: D5946 Test Method for Corona-Treated Polymer Films
Using Water Contact Angle Measurements
Technology Section
Gas plasma at reduced pressure 8
Electrical discharges at atmospheric pressure 9
3. Terminology
AC dielectric barrier discharge 9.1
3.1 Definitions—Many terms are defined in Terminology
High Frequency Apparatus 9.1.1
Suppressed Spark Apparatus 9.1.2
D907.
Arc Plasma Apparatus 9.2
3.2 Definitions of Terms Specific to This Standard:
Glow Discharge Apparatus 9.3
3.2.1 AC dielectric barrier discharge, n—a self-sustaining
NOTE 1—The term “corona treatment” has been applied sometimes in
AC discharge in relatively short gaps with a solid dielectric
the literature to the different electrical discharge treatment technologies
layer, where the discharge bridges the entire air gap.
described in Section 9. This practice defines each electrical discharge
3.2.2 contact angle, n—the angle in degrees between the
treatment technology at atmospheric pressure presented in Section 9 and
substrate surface and the tangent line drawn to the droplet
draws the necessary distinctions between them and corona discharge. See
Test Method D1868 for “corona discharge.” surface from the three-phase point.
3.2.3 corona, n—visible partial discharges in gases adjacent
1.4 The values stated in SI units are to be regarded as the
to a conductor.
standard.
3.2.4 corona treatment, n—see Note 1.
1.5 This standard does not purport to address all of the
3.2.5 electrical discharge, n—any of several types of elec-
safety concerns, if any, associated with its use. It is the
trical breakdown of gases, primarily air.
responsibility of the user of this standard to establish appro-
3.2.5.1 Discussion—The type of discharge depends upon
priate safety and health practices and determine the applica-
several controllable factors, such as electrode geometry, gas
bility of regulatory limitations prior to use. Specific hazard
pressure, power supply impedance, etc. When, at atmospheric
statements appear in Section 6.
pressure,thevoltagereachesacertaincriticalvalue,thecurrent
increases very rapidly and a spark results in the establishment
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This practice is under the jurisdiction of ASTM Committee D14 on Adhesives
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and is the direct responsibility of Subcommittee D14.40 on Adhesives for Plastics. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2004. Published April 2004. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1997. Last previous edition approved in 1997 as D6105 – 97. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6105-04. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6105–04
of one of the self-sustaining discharges, such as corona, arc, 5.2 To achieve a proper adhesive bond the polyolefin
glow and dielectric barrier discharge. In many electrical substrate’s polar component should be raised from near zero to
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discharges, ionized regions called plasma exist. 15 to 20 mJ/m .
3.2.6 electrical discharge treatment, n—activation of a 5.3 The pre-tr
...