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Environmental protection and green trade barriers on new packaging materials, makes green cushion packaging materials are increasingly favored by society. In the buffer packing material in the production process of the plant fibers, the rheological characteristics is an important parameter for its slurry. Study of the rheological properties of the slurry to improve the buffer material processing plant fiber forming process, to ensure product quality, provide a theoretical basis for the production of equipment selection. In this paper, a Brookfield DV-Ⅲ ULTRA rotor rheometer done a detailed study on the rheological properties of the slurry of plant fiber cushioning material to study solid - liquid two-phase, solid - liquid - gas phase plant fiber suspension rheological properties influencing factors, and a preliminary analysis of the impact mechanism. The following conclusions: First, the paper studied the rheological behavior of the fiber solid - liquid two-phase suspension. The study showed that the experimental measurement within the the fir slurry to meet the the Casson model non-Newtonian fluid, is a plastic fluid with shear thinning phenomenon. The slurry concentration, temperature, fiber aspect ratio of the rheological properties of the slurry equations have certain effects: With the increase of the slurry concentration, the increase in the plastic viscosity, yield force becomes large in the fiber suspension, the concentration of the slurry plastically the influence of the viscosity can be expressed with an exponential equation; With the increase in the aspect ratio of fibers, the plastic viscosity of the fiber suspension becomes large, the yield strength becomes large; influence of temperature on the plastic viscosity of the fiber suspension in accordance with Arrhenius equation, fiber The higher the temperature of the suspension, its plastic viscosity becomes small, the yield strength becomes small. Secondly, the paper added surfactant mixing fiber solid - liquid - gas phase foaming system study of the rheological properties. The study found that fiber foam system is a non-Newtonian fluid, plastic fluid, the apparent viscosity dependence of the shear rate, in line with the Casson model. Fiber content, gas-liquid ratio, the temperature on the rheological properties of the foam system equations have a certain impact: increasing exponentially larger yield force with increasing fiber content, fiber plastic viscosity of the suspension; bubble gas-liquid than the more high, its plastic viscosity the greater, the greater the yield strength; influence of temperature on the plastic viscosity of the fibrous suspension to meet the Arrhenius equation, as the system temperature increases, the plastic viscosity of the fibers of the suspension becomes small, the yield strength becomes large . System with high fiber content of viscous flow activation energy greater temperature sensitivity. This study proved the impact of various factors (fiber concentration, aspect ratio, temperature, gas-liquid ratio and shear rate) on the rheological properties of plant fiber suspension, and a preliminary analysis of the impact mechanism. Suspension of the plant fiber processing and utilization, production equipment selection as well as the development of the fiber suspension rheology are important academic and engineering significance.
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