Study On Mixing Simulation Of Plant Fiber Composites Based On Extension Field

Short fiber reinforced thermoplastics are widely used in manufacturing industry, becauseof its physical properties is more increasing than filling matrix. The rheological behavior offilling system is quite complicated generally, because it is a strong coupling between the fiberorientation and flow together, the orientation distribution of fibers determines the degree ofimprovement. Understanding the evolution of how fiber along with flow to help predict themicrostructure and the final performance of composites.In this paper, bipolar coordinate system is used to modeling and analysis for vaneplasticizing and conveying units (VPCU) of vane extruder based on extensional force field.Establishing reasonable mathematical model according to its physical model, and combiningwith reasonable assumptions, the velocity field of plant fiber suspension flow at conveyingstage for VPCU of vane extruder is obtained by mathematical method. And the influenced ofvelocity field by the concentration and length to diameter ratio of plant fiber, eccentricity ofVPCU are discussed, it can provide the corresponding macroscopic flow field information forplant fiber suspension flow.The probability distribution function of plant fiber orientation in plant fiber suspensionflow based on shear-uniaxial extensional flow is deduced, the mathematical software Matlabis used fully to program, and make the corresponding analytical solution visualization, itsorientation tensor equation is derived. The influenced of plant fiber orientation probabilitydistribution function by the concentration and length to diameter ratio of plant fiber, theeccentricity of VPCU in plant fiber suspension flow are discussed.Cooling teardown and extruding preparation experiment respectively are made in vaneextruder based on extensional force by SF/PP, the theory analysis and numerical results ofplant fiber suspension flow are proved.In this paper, solve the orientation distribution and rheological properties of plant fibercomposites based on extensional force field by analytical, numerical and experimentalmethods. Three ways to contact each other, influence each other, support each other. Realizethe combination of fiber suspension flow by analysis, numerical and experimental.