Abstract
Polypropyene/aluminum laminates have been demonstrated a noval successful bonding technique between two material surfaces via modification with polypropylene cohexenol copolymer (4% OH-groups). Laminates bonded with PPH show an extraordinary 7-10 fold increase in peel strength over acid etched samples. Chemical interaction between the oxide/hydroxide layer on the etched Al and reactive sites in the copolymer, together with mechanical interlocking due to polymer flow into pits on the Al surfaces, are prominent factors in achieving maximum adhesion. Cohesive failure is the primary failure mode in peeled samples: the fracture path propagates within PP layers and usually at a depth of over 10 μm. Extremely high peel enrgies of ≈12000 N/m were found for drawn PP/Al samples whose bond strength are greater than those for epoxy/Al.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of the American Society for Composites |
| Publisher | Publ by Technomic Publ Co Inc |
| Pages | 42-56 |
| Number of pages | 15 |
| ISBN (Print) | 0877629978 |
| State | Published - 1992 |
| Event | Proceedings of the 7th Technical Conference of the American Society for Composites - University Park, PA, USA Duration: Oct 13 1992 → Oct 15 1992 |
Other
| Other | Proceedings of the 7th Technical Conference of the American Society for Composites |
|---|---|
| City | University Park, PA, USA |
| Period | 10/13/92 → 10/15/92 |
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Building and Construction
- Polymers and Plastics