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Title: Inorganic impact modifier and processing aid for PVC
Authors: Gilbert, Marianne
Hitt, David J.
Schmaucks, G.
Friede, B.
Sorhuus, A.
Roszinski, J.O.
Keywords: Amorphous silica
Rigid PVC
Impact modification
Issue Date: 2005
Publisher: © Maney Publishing
Citation: GILBERT, M. ... et al., 2005. Inorganic impact modifier and processing aid for PVC. Plastics, Rubber and Composites, 34 (3), pp. 111 - 116
Abstract: An amorphous silica, SIDISTAR has been investigated as an impact modifier for rigid PVC. Optimal dispersion of the silica as primary particles is essential and this can be achieved by incorporating it at an early stage of the mixing process before other fillers are added. This ensures that the PVC grains are coated with SIDISTAR. This material is able to function as an impact modifier via the cavitation mechanism and it will also improve the dispersion of the other ingredients in the compound. It was found that SIDISTAR delayed gelation of the PVC compound, but this could be avoided by minor changes in formulation and processing conditions. Reduction in gelation time resulted in improved impact performance. Furthermore, compounds containing SIDISTAR possessed a wide processing window.
Description: This article was published in the journal, Plastics, Rubber and Composites [© Maney Publishing] and is available at: http://www.ingentaconnect.com/content/maney/prc
Version: Published
DOI: 10.1179/174328905X55560
URI: https://dspace.lboro.ac.uk/2134/4506
ISSN: 1465-8011
Appears in Collections:Published Articles (Materials)

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