Effect of soft carbon black on properties of natural rubber-based magnetorheological elastomers
Using natural rubber as the matrix,four magnetorheological elastomers(MREs)were fabricated using soft carbon black and carbonyl iron powder.Their microstructures were observed by using the field emission scanning electron microscope(SEM),and their mechanical properties including magnetorheological(MR)effects were observed and analyzed by the electronic universal testing machine and the advanced rotational rheometer.Experimental results show that the addition of carbon black increases the tensile strength and 300%constant tensile force of MREs.Furmore the carbon black changes the Mullins effect of MREs under low strain conditions,and MREs with the carbonyl iron powder content of 30%volume fraction increased their MR effect by three times after the addition of carbon black.The performance of MREs can be improved greatly by using soft carbon black as a reinforcing agent.
万方数据
维普
