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为开发基于环境友好型表面活性剂的紊流输水减阻技术,使用压送流体阻力测试装置和锥板流变仪,对非离子表面活性剂烷基聚糖苷水溶液的减阻、剪切粘度和应力松弛特性进行了实验研究。结果表明:烷基聚糖苷是一种出色的减阻剂,临界雷诺数随温度和浓度增加而提高;剪切粘度在低剪切速率区域不随剪切速率而改变,在较高剪切速率区域,呈现非牛顿特性,烷基聚糖苷水溶液表现为“SIS”(Shear-Induced Structure),但瞬间的剪切应变加载和卸载后,剪切应力的发展和松弛特性与纯水相同,未表现出任何粘弹特性,表明“SIS”与粘弹特性的出现与否没有直接的因果关系。
In order to develop a turbulent water transfer drag reduction technology based on environment-friendly surfactant, the drag reduction and shear viscosity of the non-ionic surfactant alkyl polyglycoside aqueous solution were measured by using a pressure fluid resistance testing device and a cone- And stress relaxation characteristics of the experimental study. The results showed that alkylpolyglycoside was an excellent drag reducer, and the critical Reynolds number increased with the increase of temperature and concentration. The shear viscosity did not change with the shear rate in the low shear rate region. In the region of higher shear rate , Showing a non-Newtonian behavior, the alkylpolyglycoside aqueous solution showed “SIS ” (Shear-Induced Structure), but the instantaneous shear strain loading and unloading, the development of shear stress and relaxation characteristics and pure water, not Show any viscoelastic properties, indicating that there is no direct causal relationship between “SIS ” and viscoelastic properties.