Synchronising structure with stability: smart yield stress fluids and applications

使结构与稳定性同步：智能屈服应力流体和应用

• 批准号: 238596-2010
• 负责人: Frigaard, Ian
• 金额: $ 3.93万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=547037
• 关键词: Synchronising; structure; stability; smart; yield

Many natural & synthetic fluids exhibit a yield stress, which means these fluids do not readily deform unless a certain (yield) stress is exceeded. Common examples are toothpaste, grease, cosmetic creams, drilling fluids, certain polymer gels, ER/MR fluids, certain molten lavas. The yield stress is caused by the fluids being structured or complex at a micro-scale and can arise from a wide range of phenomena, e.g. formation of chemical bonds between polymer chains, alignment of micro-particles or fibres, contact & jamming.

许多天然和合成流体都表现出屈服应力，这意味着这些流体不易变形，除非超过一定的（屈服）应力。常见的例子有牙膏、油脂、美容霜、钻井液、某些聚合物凝胶、ER/MR 流体、某些熔岩。屈服应力是由微观尺度上的结构或复杂的流体引起的，并且可能由多种现象引起，例如。聚合物链之间化学键的形成、微粒或纤维的排列、接触和干扰。