SBIR Phase II: Processing of Microcellular Foams from Unfilled and Filled Liquid Crystalline and Semicrystalline Polymers

SBIR 第二阶段：未填充和填充液晶和半结晶聚合物加工微孔泡沫

• 批准号: 9901754
• 负责人: Seng Tan
• 金额: $ 40万
• 依托单位: WRIGHT MATERIALS RESEARCH CO.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9901754&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Processing; Microcellular

This Small Business Innovation Research (SBIR) Phase II project will focus on optimizing the processing techniques and scale up of the firm's microcellular LCP and PPS foams. Conventional processing techniques for rigid foams involve multiple steps and the blowing agent used is toxic, Some rigid foams give off hazardous gases during the post-processing steps. In the Phase I research the firm developed a novel technique to process microcellular foams that does not use or release any hazardous chemicals/gases. The foaming technique uses the principle of thermodynamic instability with inert gas as the foaming gas. We have foamed both the unfilled and filled liquid crystalline and semicrystalline polymers (LCPs & PPS) which have excellent strength and stiffness to weight ratio, good solvent resistance, barrier properties, and high temperature stability. Low-density microcellular LCP & PPS foams are expected to have many commercial applications including sandwich structural materials for high speed aircraft, aerospace, outerspace vehicles, housing and support structures for rockets and propulsion components. Conventional applications of LCPs and PPS include various electronic connectors, electronic and audiovisual devices. They can be replaced by the proposed microcellular LCP and PPS foams with equivalent performance but much lighter in weight. On the ground applications include ladders and bridges fabricated using these classes of microcellular foams that would be much lighter in weight than those currently available.

该小型企业创新研究（SBIR）第二阶段项目将专注于优化加工技术和扩大该公司的微孔LCP和PPS泡沫。硬质泡沫塑料的常规加工技术涉及多个步骤，并且所使用的发泡剂是有毒的。 在第一阶段的研究中，该公司开发了一种新的技术来处理微孔泡沫，不使用或释放任何危险化学品/气体。 发泡技术利用热力学不稳定性原理，以惰性气体作为发泡气体。我们已经发泡的未填充和填充液晶和半结晶聚合物（LCP和PPS）具有优异的强度和刚度重量比，良好的耐溶剂性，阻隔性能和高温稳定性。 低密度LCP PPS微孔泡沫材料具有广泛的商业应用前景，包括高速飞行器、航空航天器、外太空飞行器的夹层结构材料，火箭和推进部件的壳体和支撑结构。 LCP和PPS的常规应用包括各种电子连接器、电子和视听设备。 它们可以被所提出的具有相同性能但重量轻得多的微孔LCP和PPS泡沫代替。 在地面上的应用包括梯子和桥梁制造使用这些类别的微孔泡沫，这将是轻得多的重量比目前可用的。