A chemical modification approach for improving the oil resistance of ethylene-propylene copolymers |
| |
Authors: | Martin van Duin Herman Dikland |
| |
Institution: | DSM Research, P.O. Box 18, 6160 MD Geleen, The Netherlands |
| |
Abstract: | The need for a low-cost and weather, high-temperature and oil-resistant rubber is well-established in the market place. Such products have the potential to replace high cost rubbers and/or oil-resistant rubbers that lack weather and high-temperature resistance. The present study aims at increasing the polarity of EP(D)M rubber by chemical modification and cross-linking of EPM copolymer grafted with maleic anhydride (EPM-g-MA). First, it is shown that the oil resistance of rubbers can be predicted using calculated solubility parameters. Next, a variety of modified EPMs has been designed, directed at a high polarity in combination with a relatively low glass transition temperature, and have subsequently been prepared to validate the concepts experimentally. The various modification approaches resulted in (significantly) improved oil resistance and are in fair agreement with the calculated oil swell data. It is concluded that new rubber materials based on EPM-g-MA can be developed, that may replace existing oil-resistant elastomers. |
| |
Keywords: | Oil resistance EPDM Maleated EPM Modification Cross-linking |
本文献已被 ScienceDirect 等数据库收录! |
|