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Details van artikel 9 van 12 gevonden artikelen
| Titel: |
Rheological Properties of Elastomers at Network Formation |
| Auteur: |
Shershnev, V. A. Yulovskaja, V. D. Donskoy, A. A. Kulichikhin, S. G. Malkin, A. Ya. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 18 (1992) nr. 1-2 pagina's 17-23 |
| Jaar: |
1992-09-01 |
| Inhoud: |
Changes of viscoelastic properties of polyisoprene (PI) in the process of crosslinking were studied. The obtained results were compared with kinetics of gel-fraction formation and crosslinking agent insertion. For systems with prolonged induction period of crosslinking good agreement in the change of viscosity, storage modulus and tan δ was noted. The appearance of the maximum on tan δ-vs-time curve correlates with flow cessation (gel-point). The increase of viscosity without the crosslinking agent insertion was noted before gel-point. It is related to increasing molecular mass of PI and can be expressed in terms of power law with the exponent equal to 5.6. After the gel-point sharp increase of storage modulus depending on the crosslinking system used was noted. At that moment overall network structure was formed and intensive insertion of crosslinking agents was observed. Change of viscoelastic characteristics of PI in crosslinking can be satisfactory described by the equation of a self-acceleration type. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 12 gevonden artikelen
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