• Product features The development of Powdered Nitrile Butadiene Rubber friction materials as a thickener in order to improve the mechanical properties of phenolic resin and polymer materials, and has a good  compatibility with the phenolic resin. On the one hand, Nitrile Butadiene Rubber can improve the impact resistance of the friction materials system, to improve braking comfort. On the other hand, it has good oil resistance, high temperature resistance and flexibility.