PLASTICIZER AND RUBBER MODIFIER FOR NITRILE RUBBER (NBR)
Cardolite CNSL-based phenolic resins are high bio-content plasticizer and rubber modifier alternatives for acrylonitrile butadiene rubber (or NBR). These renewable resins help lower compound viscosity and increase elongation due in part to the long aliphatic side chain inherited from CNSL. The unique structure of these resins enables rubbers to retain good elongation even after aging. As plasticizers, they show good resistance to brittleness even at lower temperatures. Moreover, the incorporation of CNSL resins reduces changes in volume upon exposure to certain chemicals compared to unmodified rubber.
Adding Cashew Nutshell Liquid derived resins to nitrile rubber results in…
Reduced compound viscosity and improved fluidity before vulcanization
Similar rubber hardness as when DOP and P6310 are incorporated
Better heat aging resistance, specially for elongation
Lower rubber low temperature brittleness
Improved and higher oil and fuel resistance than DOP and P6310