ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A new method is described for bonding gold to Teflon FEP, yielding high joint strength without affecting the electrical properties of the virgin polymer material. The method consists of depositing a 1000-Å aluminum layer onto the Teflon by evaporation, removing it by washing the sample in dilute sodium hydroxide, followed by deposition of gold by evaporation. The tensile shear strength of this composite is in excess of 80 kg/cm2, approaching the cohesive strength of Teflon. The desirable electrical properties of Teflon FEP, as measured by isothermal charge decay and thermally stimulated currents methods, are preserved by this method. X-Ray photoelectron (ESCA) spectra suggest that the modified wetting characteristics and enhanced joint strengths can be attributed in part to the existence of a thin layer of oxygen-containing hydrocarbon material on the surface of aluminum-treated Teflon FEP.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1976.070200121
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