Effects of R adial-Orientation-Die Structure Parameters on Properties of Short Fiber and R ubber Composite M aterial
摘要
The radial-orientation-die has special structure to make short fibers get radial orientation in rubber matrix during extrusion process,which means the physical and mechanical properties of short fiber and rubber composite material will be influenced by the die different structures. The effects of radial-orientation-die structure parameters on properties of short fiber and rubber composite were studied experimentally by different structure parameters, including expansion ratio, expansion angle, dam clearance, molding channel length, convergence angle, and transition channel length. The experimental results indicated that short fiber and rubber composite could get good properties with optimized radial-orientation-die structure parameter. And the optimized structure parameters are that expansion ratio is about 5 with an expansion angle of 150°,dam clearance is about 4 mm, molding channel length is about 50 mm,convergence angle is about 120°,and transition channel length is about 30 mm. Accordingly, the physical and mechanical properties of the composite can be remarkably improved,which give an obvious anisotropy.