Development of Layer-Multiplying Technology for Continuous Processing of Polymers into Microlayers and Nanolayers

聚合物连续加工成微层和纳米层的多层技术的发展

• 批准号: 9503941
• 负责人: Anne Hiltner
• 金额: $ 12.45万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9503941&HistoricalAwards=false
• 关键词: Development; Layer; Multiplying; Technology; Continuous

DMR-9503941 Hiltner A layer-multiplying technology is proposed that will process elastometers, thermoplastics, and composites into sheets of films with hundreds or thousands of alternating layers. With this technology, two polymers are fed from extruders into a feed block as parallel layers, and then into a die that splits, spreads, and recombines the melt. Any number of die elements can be combined in series to produce two- component multilayered structures, or three-component multilayered structures by adding a third OtieO polymer. Fundamental research topics include mechanisms of polymer compatibilization and of interface formation. As the individuial layer thickness becomes comparable to the size of the polymer molecule, new phenomena and properties arising from the high interface to volume ratio are anticipated. There is a need for new processing technologies to create engineered microstructures of incompatible polymers. The processing facility to be developed at Case Western Reserve will make it possible to scout a wide range of multilayered compositions of interest to the academic as well as to the industrial communities. The co-extrusion technology can potentially produce layered polymers with unique toughness and permeability characteristics.

DMR-9503941 Hiltner 提出了一种层倍增技术，该技术将弹性体、热塑性塑料和复合材料加工成具有数百或数千个交替层的薄膜片。 通过这种技术，两种聚合物从挤出机作为平行层进料到进料块中，然后进入模具中，该模具分裂，分散和重新组合熔体。任何数量的模具元件可以串联组合以产生双组分多层结构，或通过添加第三种聚合物产生三组分多层结构。 基础研究课题包括聚合物增容机理和界面形成机理。由于单层厚度变得与聚合物分子的尺寸相当，因此可以预期由高界面体积比引起的新现象和性能。 需要新的加工技术来产生不相容聚合物的工程微结构。 在凯斯西储开发的加工设施将使人们有可能探索学术界和工业界感兴趣的各种多层成分。 共挤出技术可以潜在地生产具有独特韧性和渗透性特征的层状聚合物。