Engineering Equipment Grant: Thermal Analysis System Upgrade

西蒙9500318这是一项研究设备赠款，用于购买Perkin Elmer DSC-7差示扫描量热仪和PI的Perkin Elmer DMA-7动态机械分析仪的升级。DSC-7将取代已有20年历史的DSC-2。DSC-7具有更快的冷却和加热速度、更好的温度控制、更高的灵敏度和更好的数据分析。有必要将Perkin-Elmer DMA-7升级为DMA-7E，以便于测量远低于玻璃化转变温度的玻璃态和高模数材料，并改进不能使用薄膜的Tg附近的蠕变测量。需要使用这些仪器的项目包括调查网络限制对玻璃态热固性聚合物性能的影响。其他将从升级中受益的项目包括研究固化循环对热固性材料内部应力的影响、关于聚合物的物理老化的项目以及关于聚氰尿酸盐材料中水分与化学和物理老化的相互作用的项目。

Simon 9500318 This is a Research Equipment Grant for the purchase of a Perkin Elmer DSC-7 differential scanning calorimeter and an upgrade for the PI's Perkin Elmer DMA-7 dynamic mechanical analyzer. The DSC-7 will replace a twenty-year-old DSC-2. The DSC-7 has faster cooling and heating rates, better temperature control, improved sensitivity, and improved data analysis. The upgrade of the Perkin-Elmer DMA-7 to a DMA-7e is necessary in order to facilitate the measurement of glassy and high-modulus materials far below the glass transition temperature and to improve measurements of creep in the vicinity of Tg where films cannot be used. Projects which will entail the use of these instruments include an investigation of the effects of network constraints on the properties of thermosetting polymers in the glassy state. Other projects which will benefit from the upgrade include investigations of the effect of cure cycles on the internal stress of thermosetting materials, a project on the physical aging of polymers, and project on the interaction of moisture and chemical and physical aging in polycyanurate materials.