Abstract
Blends of natural rubber (NR) and hydrogenated nitrile rubber (HNBR) have been evaluated with emphasis on dichlorocarbene modified natural rubber (DCNR), a chemically modified form of natural rubber as an interface modifier. The blend characterisation studies by IR spectroscopy, DSC and SEM techniques revealed the interaction of DCNR with the blend constituents. The modified blend exhibited overall improved mechanical properties. The improvement in aging resistance of the blends showed that the degradation resistance of NR could be significantly improved with respect to heat, oil and ozone by blending with HNBR and modifying with 7 parts of DCNR containing 15% chlorine.
Keywords
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