Effect of actual surface area on adhesion strength of copper electroplated on ABS plastic micro-textured by hot embossing

Ruslan Melentiev*, Ran Tao, Lujain Fatta, Amit K. Tevtia, Gilles Lubineau

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

6 Scopus citations

Abstract

Acrylonitrile-butadiene-styrene (ABS plastic) is one of the most widely used thermoplastic resins for electroplating. In electroplating, a glossing metallic layer is coated on the ABS plastic surface. Yet, the electroplated coating has poor adhesion to ABS plastics. Thus, polymer producers strive to develop more adhesive electroplating grades of ABS plastic. Unfortunately, there is no reliable method to quantify the polymer chemistry-induced adhesion to electroplated coating separately from the interlocking. Herein, the chemical adhesion at the metal-polymer is measured via precision manipulation with the actual surface area of the ABS plastic, without introducing interlocking and chemical modifications. We fabricated 9 moulds with 2, 4 and 6 μm wide and 2, 4 and 6 μm deep pillars, hot-embossed the pillars into ABS plastic, electroplated the ABS plastic with a copper coating, peeled the copper coating to measure the adhesion strength, and observed the micro-textured ABS plastic/copper interface in SEM. We found that the adhesion strength at the ABS plastic/copper interface is linearly proportional to the actual surface area of the texture (1), independent of the non-interlocking texture size (2), and strongly depends on the grade of the ABS plastic (3). The method can be employed to compare the adhesivity of different polymers while developing a new electroplating grade of ABS plastic.

Original languageEnglish (US)
Pages210-215
Number of pages6
DOIs
StatePublished - 2022
Event6th CIRP Conference on Surface Integrity, CSI 2022 - Lyon, France
Duration: Jun 8 2022Jun 10 2022

Conference

Conference6th CIRP Conference on Surface Integrity, CSI 2022
Country/TerritoryFrance
CityLyon
Period06/8/2206/10/22

Bibliographical note

Publisher Copyright:
© 2022 The Authors.

Keywords

  • adhesion
  • Coating
  • electroplating
  • hot embossing
  • interlocking
  • micro-texturing
  • surface area

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

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