摘要
为研究油品火灾三相泡沫的发泡稳定与流动性能的关系,利用Waring-Blender方法对6种固相粉体制备三相泡沫,并分别以发泡高度、25%析液时间及表观粘度为参数,对其发泡稳定及流变性能进行表征,并通过Herschel-Bulkley方程对三相泡沫流变曲线进行拟合。实验结果表明,亲水及"两亲"粉体制备的三相泡沫具有较高的发泡高度及稳定性,疏水粉体制备的三相泡沫的发泡及稳定性能不足;流变测试结果显示三相泡沫属于屈服-假塑性流体且流变本构方程与Herschel-Bulkley方程拟合较好,其中亲水及"两亲"粉体制备的三相泡沫屈服-假塑性流体性质较疏水粉体制备的明显,表观粘度较大,流动性不足。
This paper studied the relationship between foaming stability and flowability of three phase foam, in which 6 kinds of solid phase powders were prepared by Waring- Blender method, the parameters, foaming height, 25% drainage time and apparent viscosity, were analyzed to characterize tile foaming stability and flowability and mean- while the three phase foam rheological curves were fitted by Herschel - Bulkley equation. The result shows that three phase foam made by hydrophilic and amphiphilic powder has better performances of foaming height and foaming stabil- ity, while that made by hydrophobic powder is insufficient. The rheological test shows three phase foam belongs to yield pseudoplastic fluid and the constitutive is well fitted with Herschel - Bulkley equation. The three phase foam made by hydrophilic and amphiphilic powder performs more yield pseudoplastic than that made by hydrophobic pow- der, also it has larger apparent viscosity and worse flowability.
出处
《工业安全与环保》
北大核心
2017年第11期1-4,24,共5页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(51574254)
国家重点专项(2017YFC0804705)
重庆市科技计划项目(CSTC 2014yykf B90001)
