Processing for Maximum Polymer Properties (Materials Research)

将超拉伸热塑性塑料的机械性能、导热性和透气性与生产过程中发生的变形过程联系起来。其目的是制备比现有强度高得多的聚合物纤维和片材。在单轴和平面拉伸流变形后，将评估其性能。加工变量包括变形比、速率和拉伸温度。测试将在聚烯烃、聚酯、聚醚和尼龙家族的半结晶热塑性塑料上进行。研究计划包括三个阶段：变形预形貌的制备，结晶态变形过程，以及初始形貌和绘制形貌的表征。

Work is undertaken which will relate the mechanical properties, thermal conductivities, and gas permeability of ultradrawn thermoplastics to the deformation processes which occur in their production. The purpose is to prepare polymer fibers and sheets with strengths much higher than presently available. The properties will be evaluated after deformation from uniaxial and planer extensional flows. Processing variables will include the deformation ratio, rate, and draw temperature. Tests will be conducted on semicrystalline thermoplastics in the polyolefin, polyester, polyether, and nylon families. The research plan involves three stages: preparation of a premorphology for deformation, the crystalline state deformation processes, and characterization of the initial and drawn morphologies.