Effect of cavity pressure on crosslink density of injection moulded silicone rubber

Authors: Barbaroux, M.¹; Régnier, G.²; Verdu, J.²

Source: Plastics, Rubber and Composites, Volume 29, Number 5, May 2000 , pp. 229-234(6)

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Abstract:

The effects of injection moulding conditions (temperatures 120 and 160°C, pressures from 5 to 50 MPa) on the crosslink density of the resulting parts (determined from equilibrium solvent swelling experiments) have been studied for an elastomer of the liquid silicone rubber type in which crosslinking results from platinum catalysed vinyl–silane addition. It was shown, unexpectedly, that a pressure increase leads to an increase in the cure rate, despite the unfavourable effect of pressure on viscosity.

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1179/146580100101541003

Affiliations: 1: Dow-Corning Health Care Industries, 300 Route des Crêtes, Sophia Antipolis Cedex, France 2: the Laboratoire de Transformation et de Vieillissement des Polymères, Ecole Nationale Supérieure d'Arts et Métiers, 151 Boulevard de l'Hôpital, Paris, France

Publication date: 2000-05-01

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