Ferracane J L, Greener E H
Biomater Med Devices Artif Organs. 1981;9(3):213-24. doi: 10.3109/10731198109119001.
The rheological properties of setting acrylic bone cements were examined with a rotational cone and plate viscometer. The cements were tested over two orders of magnitude of shear rate to determine the nature of any non-Newtonian flow behavior. All three cements behaved with moderate pseudoplasticity (i.e., shear thinning) during setting, suggesting the use of higher pressures during administration for better flow and penetration. The low viscosity brand was found to be nearly one-half as viscous as the conventional cements during the working time (i.e., 2-5 minutes). A series of sieving experiments were performed to determine the particle size distributions of the powder components. Statistical analysis (chi square) showed the cements to have different distributions, with the low viscosity brand containing a larger proportion of smaller polymer particles. This difference is thought to contribute to the lower viscosity of this cement.
使用旋转锥板粘度计对凝固中的丙烯酸骨水泥的流变特性进行了检测。在两个数量级的剪切速率范围内对这些骨水泥进行测试，以确定任何非牛顿流动行为的性质。所有三种骨水泥在凝固过程中均表现出适度的假塑性（即剪切变稀），这表明在给药过程中使用较高压力可实现更好的流动和渗透。发现低粘度品牌在工作时间（即2至5分钟）内的粘度几乎是传统骨水泥的一半。进行了一系列筛分实验以确定粉末成分的粒度分布。统计分析（卡方检验）表明，这些骨水泥具有不同的分布，低粘度品牌含有较大比例的较小聚合物颗粒。这种差异被认为是造成这种骨水泥粘度较低的原因。
