竹纤维悬浮发泡浆料流变特性的研究

利用DV-Ⅲ ULTRA转子式流变仪对竹纤维悬浮发泡浆料的流变性质进行研究,分析影响纤维固液悬浮体、纤维三相发泡悬浮体流变性能的主要因素.结果表明:在试验测量范围内.纤维固液悬浮体和加入表面活性剂后形成的纤维三相发泡悬浮体均属于非牛顿流体中的塑性流体,其表观黏度对剪切速率的依赖性强,具剪切稀化现象.随着浆料浓度增高、纤...

Rheological properties of foaming pulp solution from bamboo fibers

The rheological properties of foaming pulp solution from bamboo fibers were studied with a Brookfield DV-Ⅲ ULTRA rheometer. Factors affecting rheological properties of liquid-solid two-phase and gas-liquid-solid three-phase bamboo fiber suspensions were analyzed. The results indicated that the both systems have a behavior of pseudoplastic fluid in the category of non-Newtonian fluid, as characterized by the lower apparent viscosity at higher shear rate. In the systems of liquid-solid two-phase bamboo fiber suspensions, the plastic viscosity and yield point increased when raising the pulp concentration, enlarging the axial ratio and decreasing the temperature. In the systems of gas-liquid-solid three-phase bamboo fiber suspensions, the plastic viscosity and yield point also increased when raising the pulp concentration, enlarging the axial ratio and decreasing the temperature. It is recommended that the shear rate is kept over 40 per second to ensure continuous flow of the suspension solution in manufacturing process.