Today's KNOWLEDGE Share :CNSL resins as modifiers

 Today's KNOWLEDGE Share

CNSL RESINS FOR RUBBER APPLICATIONS

Cardolite offers a wide variety of Cashew Nutshell Liquid (CNSL) derived resins for rubber applications. CNSL-based resins can substitute petroleum based phenolic resins as rubber modifiers to improve carbon footprint and lower toxicity of the final compound. CNSL resins can be used as tackifying resins and as plasticizers for polar and non polar rubber while providing additional benefits that could include antioxidant properties and adhesion improvement.

PLASTICIZER AND ANTIOXIDANT FOR ISOPRENE RUBBER

Cardolite CNSL-based phenolic resins can be formulated into synthetic natural rubber to act as plasticizers or process aids that also provide antioxidant properties. These higher molecular weight CNSL polymers are rubber modifiers that help reduce compound Mooney viscosity to similar levels to paraffinic process oils. Moreover, the incorporation of CNSL resins results in enhanced resistance to aging by heat as indicated by lower change in mechanical properties.

Adding Cashew Nutshell Liquid derived resins to rubber results in…

Lower compound viscosity and improved fluidity before vulcanization

Better antioxidant properties

Higher rubber hardness after vulcanization

Lower rubber modulus at high strain that can be adjusted by increased cure with little effect on elongation

source:www.cardolite.com