弗里曼技术将在今年的AAPS年会会议和博览会上推出公司FT4粉状流变仪的单轴测试解决方案(2010年11月14日至18日,新奥尔良)。
单轴试验机进一步扩展了FT4 ability to efficiently and reproducibly measure properties that directly correlate with a powder's in-process behaviour. Uniaxial testing complements existing test methodologies for shear, bulk and dynamic powder measurement.
Uniaxial testing involves measuring the force needed to break or fracture a column of consolidated powder. It is probably the most simple and direct method of measuring unconfined yield strength, a parameter related to cohesivity. In the past, use of the technique has been inhibited by the difficulties inherent in repeatably producing a uniformly packed and consolidated powder column for testing. As a result, unconfined yield strength data are routinely derived from shear testing, a less direct but practical alternative.
弗里曼技术开发了一种新的附件,与明确定义的固结方法组合,产生均匀,均匀的粉末柱进行测试。测量裂缝所需的正常应力直接识别不包含的屈服强度。比较试验表明,新的解决方案产生与剪切测试数据衍生的数据密切相关的数据,但提供了改进的重复性。
单轴测试不适用于具有非常低的内聚强度的粉末,但是一种快速而直观地测量更多粘性材料的无凝结屈服强度的方法。欧洲杯足球竞彩它补充了旋转剪切测试,其相反需要更少的样品,可用于较少的粘性材料,对于测量墙面摩擦数据,对于支撑施工选择的材料是必不可少的。欧洲杯足球竞彩
描述了描述这个新的单轴测试解决方案的应用笔记可以从弗里曼技术网站www.freemantech.co.uk下载