EFFECTS OF MOLECULAR STRUCTURE ON MECHANICAL PROPERTIES OF STRUCTURAL ADHESIVES.
Abstract
It has been reported that at temperatures known to give rise to strong adhesion between polyeth ylene and metal oxide surfaces (from about 200 350 C), polyethylene shows evidence of pyrolytic cracking, and that titanium dioxide in intimate contact with the polyethylene at 225 C catalyt ically affects this thermal degradation. From this and other observations it was concluded that covalent bonding had occurred at the resin-metal interface. It has been suggested that the same phenomenon may occur in the presence of other metals. The purpose of the present work was to determine whether experimental evidence supports this contention and, if so, to determine the na ture of the chemisorption. Basic to such a pro gram is the hypothesis that a change in the char acter of thermal degradation in the presence of a metal implies the existence of specific cata lytic effects with chemisorption as an intermedi ate. It was hoped that if specific catalytic effects were found, theory could be invoked to yield some knowledge of the nature of adhesive bonds. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1961
- Accession Number
- AD0418665
Entities
People
- E.g. Bobalek
- P. Sampathkumaran
- R. Chartoff
- T.t. Serafini
Organizations
- Case Western Reserve University