文档介绍：I~UTTERWQRTH &t. J. Adhesion and Adhesives 15 (1995) 87 90
I~E I N E M A N N Elsevier Science Limited
Printed in Great Britain
0143-7496/95/$
Treatment of low energy surfaces for adhesive
bonding
. Brewis*, I. Mathieson and M. Wolfensberger*
Institute of Surface Science and Technology, University of Technology,
Loughborough, Leicestershire LE11 3TU, UK
Surface pretreatment methods to enhance adhesion to polymers with low surface energies generally either
remove a region of low strength from the surface or introduce new surface functional groups. The
relative importance of these two mechanisms is examined in the present paper for binations
of pretreatment and polymer.
(Keywords: adhesive bonding; polymers; surface pretreatment)
INTRODUCTION transferred at low loads to an epoxide adhesive 1. Some
improvements in adhesion to chemically unmodified
Organic molecules including polymers possess low PTFE have been achieved. In multiple bonding experi-
surface energies. The poor adhesion to some polymers ments where an epoxide was bonded many times to the
has often been ascribed to this low surface energy, but same piece of PTFE, a fold increase in bond
an alternative reason has also been proposed, namely strength occurred2; this may have been due in part to
the existence of weak boundary layers - . a region of an incre