MRI: Acquisition of a Rheometer for Polymer Materials Research and Education

MRI：购买用于聚合物材料研究和教育的流变仪

• 批准号: 0074544
• 负责人: Chang Han
• 金额: $ 10.3万
• 依托单位: University of Akron
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074544&HistoricalAwards=false
• 关键词: MRI; Acquisition; Rheometer; Polymer; Materials

CTS: 0074544C. Han, University of AkronAbstractThe research equipment requested, Advanced Rheometrics Expansion System (ARES) is a powerful and versatile rheological instrument, which will enable the PI and his colleagues to measure the rheological properties of various polymeric material in the liquid as well as the solid state. Specifically, ARES will enable this research group to conduct the following rheological measurements of various polymeric materials: (1) transient shear flow, (2) steady-state shear flow, (3) flow reversal upon changing the direction of flow, (4) stress relaxation upon cessation of shear flow, (5) oscillatory shear flow, (6) creep, (7) temperature sweep under isochronal conditions, and (8) torsional oscillatory shear. This instrument will allow us to conduct rheological measurements for polymer solutions, molten polymers, polymer blends, particulate-filled polymers or elastomers.The precise measurements of the rheological, properties of such materials will help develop a new generation of polymeric materials for such applications as nanocomposites, computer/electronic parts, and nonlinear optical wave-guides. Also, the precise measurements of the rheological properties of polymeric materials will help develop new theories and/or modify the existing theories, which will relate the chemical structures of polymers to their rheological properties.

CTS: 0074544 c。高级流变学膨胀系统（Advanced Rheometrics Expansion System， ARES）是一种功能强大、用途广泛的流变学仪器，它将使PI及其同事能够测量各种聚合物材料在液体和固体状态下的流变特性。具体而言，ARES将使本课课组能够对各种聚合物材料进行以下流变学测量：(1)瞬态剪切流动，(2)稳态剪切流动，(3)改变流动方向时的流动逆转，(4)剪切流动停止时的应力松弛，(5)振荡剪切流动，(6)蠕变，(7)等时条件下的温度扫描，(8)扭转振荡剪切。该仪器将允许我们对聚合物溶液、熔融聚合物、聚合物共混物、颗粒填充聚合物或弹性体进行流变测量。对这些材料流变特性的精确测量将有助于开发新一代聚合物材料，用于纳米复合材料、计算机/电子部件和非线性光学波导等应用。此外，聚合物材料流变特性的精确测量将有助于发展新的理论和/或修改现有的理论，这些理论将聚合物的化学结构与其流变特性联系起来。