| 초록 |
The rice husk carbon (RHC), ultrasonically treated RHC in water (UWHC) and ultrasonically treated RHC in silane solution (USHC) were used to reinforcing filler for EPDM rubber. The UWHC showed a larger surface area than RHC. The EPDM rubber compounds filled with RHC, UWHC and USHC, respectively, prepared by using Banbury mixer and two roll mill. The curing behaviors were investigated by using rheometer and Mooney viscosity also was measured. For optimum cure time, the EPDM compounds were vulcanized by hot press molding. The mechanical and dynamic mechanical properties of EPDM rubbers were investigated. The UWHC and USHC filled EPDM rubber showed higher physical properties than RHC filled EPDM, such as tensile strength, elongation at break and damping property. Therefore, it is expected that the ultrasonically treated RHC as a bio-filler is an effective substitute for commercial filler. This would have a positive effect both economically and environmentally. |
