Abstract
Frictional behaviors of nitrile rubber of screw pump stators with liquid nitrile rubber (LNBR) as a plasticizer with different mass portions(5,10,15,20) are investigated by the MPV-600 wear tester, and their physical properties and curing characteristics are studied. The morphologies of worn surface are measured by the scanning electron microscope. The results show that the tc90 time of the rubber is shortened due to LNBR modified stator nitrile rubber, and its processing performance is improved, hence energy is saved. The 100% modulus, tensile strength, elongation at break of stator nitrile rubber increases with the increasing amount of LNBR, while the tensile strength and hardness show the opposite trend, and LNBR is reactive plasticizer. It has a relatively excellent overall performance when the mass portion of LNBR is15.
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