Dynamic Mechanical Analyzer for Advanced Materials Characterization

用于先进材料表征的动态力学分析仪

• 批准号: RTI-2019-00981
• 负责人: Zhu, Shiping
• 金额: $ 10.93万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=669888
• 关键词: Dynamic; Mechanical; Analyzer; Advanced; Materials

This proposal seeks funding to purchase a new Dynamic Mechanical Analyzer (DMA) to replace the decommissioned 25-year-old unit in the Chemical Engineering Department at McMaster University. Currently, there is no such instrument available at McMaster or in Hamilton. The DMA is highly functional and cost-effective instrument in materials science and engineering used for evaluating the thermomechanical properties of soft materials under static and dynamic conditions. Dynamic conditions are highly relevant to predicting the response of new materials in practical environments (temperature, humidity, vibrations); no other instrument can measure these properties under such conditions. More specifically, DMA uniquely enables quantification of how the stiffness and elasticity of materials change at varying applied frequencies and temperatures as well as the permanent deformation of soft materials under varying frequency and temperature conditions. DMA is the only instrument that enables direct evaluation of the relationship between the thermomechanical properties of a material and its structure on a molecular level, information of critical importance for researchers performing molecular simulations and attempting to correlate results with experimental data. DMA requires only small size samples and could work from low to high temperatures with customized operation modes, enabling effective simulation of the real conditions at which a material would be applied. In comparison to other related techniques such as differential scanning calorimetry and universal mechanical testing, the high accuracy and sensitivity of DMA measurements coupled with the capacity to test materials under real-life conditions provide unique functionality that cannot be replicated using other instruments. ***Access to DMA is in high demand by materials research labs at McMaster University across multiple departments working with polymeric materials, composites and blends, both for pure experimental work as well as to experimentally verify theoretical predictions of material properties and structure-property interactions. DMA is an essential analytical tool for characterizing a range of advanced materials critical for current and future Canadian markets, shape memory polymers, biomedical materials (artificial bones), edible materials for cutlery and packaging, and fuel cells, among other applications. As such, the lack of current access to DMA introduces a significant barrier to the completion of high-level and internationally competitive research projects in these critical fields to Canada's future economy. The use of DMA is also of high importance for the effective training of high-quality personnel. The lack of DMA access, coupled by its critical need for multiple ongoing projects, introduces uncertainty in the timelines for completing student theses in addition to hindering the job market competitiveness of future professionals needed for emerging market opportunities in Canada.

该提案寻求资金购买新的动态机械分析仪 (DMA)，以取代麦克马斯特大学化学工程系已退役 25 年的设备。目前，麦克马斯特或汉密尔顿没有这样的仪器。 DMA 是材料科学与工程领域中功能强大且经济高效的仪器，用于评估软材料在静态和动态条件下的热机械性能。动态条件与预测新材料在实际环境（温度、湿度、振动）中的响应高度相关；没有其他仪器可以在这种条件下测量这些特性。更具体地说，DMA 独特地能够量化材料的刚度和弹性在不同的应用频率和温度下的变化，以及软材料在不同的频率和温度条件下的永久变形。 DMA 是唯一能够在分子水平上直接评估材料热机械性能与其结构之间关系的仪器，这些信息对于研究人员进行分子模拟并尝试将结果与实验数据关联起来至关重要。 DMA 仅需要小尺寸样品，并且可以通过定制的操作模式在低温到高温下工作，从而能够有效模拟材料应用的真实条件。与差示扫描量热法和通用机械测试等其他相关技术相比，DMA 测量的高精度和灵敏度加上在现实条件下测试材料的能力，提供了使用其他仪器无法复制的独特功能。 ***麦克马斯特大学多个部门的材料研究实验室对 DMA 的需求很高，这些实验室从事聚合物材料、复合材料和共混物的研究，既用于纯实验工作，也用于通过实验验证材料性能和结构-性能相互作用的理论预测。 DMA 是一种重要的分析工具，可用于表征对当前和未来加拿大市场至关重要的一系列先进材料、形状记忆聚合物、生物医学材料（人造骨）、餐具和包装用可食用材料以及燃料电池等应用。因此，目前缺乏 DMA 的机会，对加拿大未来经济的这些关键领域完成高水平和具有国际竞争力的研究项目构成了重大障碍。 DMA的使用对于高素质人才的有效培养也具有重要意义。缺乏 DMA 准入，加上对多个正在进行的项目的迫切需求，除了阻碍加拿大新兴市场机会所需的未来专业人员的就业市场竞争力之外，还给完成学生论文的时间表带来了不确定性。