|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 10 van 13 gevonden artikelen
| Titel: |
Slow Crack Growth and Molecular Mobility in Commercial Gas Pipe Resins |
| Auteur: |
Lear, J. J. Geil, P. H. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 15 (1991) nr. 3-4 pagina's 147-170 |
| Jaar: |
1991-12-01 |
| Inhoud: |
Fundamentals of crack growth were studied in polyethylene copolymers used in distribution piping of natural gas. The effect of comonomers is significant despite very low concentrations. The growth of the craze is by fibrillation at the crack tip. The molecular mobility was studied by dynamic mechanical properties as well as by small angle x-ray scattering measurements of the changes in long period with annealing time and temperature. It was found that molecular mobility in these gas pipe resins is significantly less than that seen in HDPE. This greatly reduced molecular mobility seems to contribute to the increased resistance to slow crack growth of these resins. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 13 gevonden artikelen
| << vorige | volgende >> |