Theresults showed that the bound rubber contents were increased with increase of structureand surface area of the carbon black filled,which led to the elevation in bulk viscosity,stiffness and green strength, but to the reduction of plasticity and tackyness at low sh-ear rates, and the poorer flow properties and the less shrinkage of extrudates at highershear rates.
When the branching degree of Ni-BR was larger, the values of dynamic modulus, yield strength and T300/σy were higher, the molecular weight of entanglement was less but the segment number higher, bulk viscosity was larger, and the entanglement network was dense,so it was resulted in difficult for molecular motion and disentanglement, and the crystallizability of rubber decreased, or even could not be crystallized.
Waves in a liquid containing gas bubbles and subject to bulk viscosity
On the other hand, the influence of the equilibrium dissociation reaction on the coefficient of bulk viscosity must be appreciable.
Effect of the bulk viscosity on the sound propagation in nonequilibrium suspensions of microparticles in gas
After the reaction of PGLD-Ch with boric acid, there was a marked increase in the bulk viscosity evidencing physically that boron can initiate a charge transfer complex formation, (PGLD-Ch)B.
With three potential functions including quadrupole interaction, we computed the shear and the bulk viscosity coefficients as well as the thermal conductivity by molecular dynamics for a number of states of liquid nitrogen.