Dynamic viscoelasticity and rheological properties of solution polymerized styrene-butadiene rubber filled with carbon black

The dynamic viscoelasticity and rheological properties of different grades of solution polymerized styrene-butadiene rubber(SSBR) filled with carbon black were studied using rubber processing analyzer and double cylinder capillary rheometer with constant speed.The results showed that the carbon black network formed in SSBR-T 2003 compound at 20 phr carbon black,and in SSBR-2305 compound at 25 phr carbon black.With the increase of carbon black,the storage modulus and loss modulus of SSBR-T 2003 compound increased and the Payne effect got more obvious,the storage modulus and loss modulus of SSBR-2305 compound also increased,but there was no sharp increase,and the Payne effect was weak.The SSBR compounds with different amounts of carbon black exhibited pseudoplastic fluid behavior and the SSBR-T 2003 compounds showed more significant non-Newtonian behavior.The flow interface of the SSBR-T 2003 compound was basically stable,but that of the SSBR-2305 compound undergone a chang from stick to slip.