Synthesis and Analysis of Gas/Polymer Solutions for Ultra- Microcellular Plastics Production

用于超微孔塑料生产的气体/聚合物溶液的合成和分析

• 批准号: 9114738
• 负责人: Nam Suh
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-03-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9114738&HistoricalAwards=false
• 关键词: Synthesis; Analysis; Gas; Polymer; Solutions

The PI has invented and patented a process for making a new class of polymeric materials which he calls microcellular plastics. The process consists of the formation of a gas/polymer solution and the inducement of its thermodynamic instability to nucleate a very large number (1015 cells/cm3) of microbubbles or cells which are on the order of 10-6m in diameter. These cells are smaller than the flaws that preexist within polymers and thus do not compromise the polymer's specific mechanical properties. This can be done at room temperature as well as at higher temperatures. The technology has been further developed and commercialized by industry. The goals of the proposed research are to determine the fundamental mechanisms of super gas concentration in polymers and to develop a new class of materials, which the PI is calling ultra-microcellular plastics, which are characterized by cell sizes on the order of 10-7m in diameter and cell densities of the order of 1018 cells/cm3 of parent material. Understanding the physical phenomena governing super gas concentration in polymers can be used to affect the performance-structure-property-processing relationship of these materials and help design procedures to manufacture the new, even more densely packed foams that the PI is planning to produce. Ultra-microcellular plastics have potential advantages over the parent material and over other foams such as transparency, high-impact strength, increased strength-to- weight ratio, and improved thermal and dielectric properties. On a broader scale, understanding the fundamental phenomena involved in the synthesis of these materials could be used to develop industrial technologies for example for environmentally-safe foaming technologies, filters, optical materials, insulation materials, and substrates for photographic films.

PI发明并授予了制造新的聚合物材料的过程，他称为微细胞塑料。 该过程包括形成气体/聚合物溶液以及其热力学不稳定性的诱导，以对直径为10-6m的微泡或细胞成分很大的微泡或细胞。 这些细胞比聚合物中早期主义的缺陷小，因此不会损害聚合物的特定机械性能。 这可以在室温以及较高的温度下完成。 该技术已由行业进一步开发和商业化。 拟议的研究的目标是确定聚合物中超级气体浓度的基本机制，并开发新的材料，PI称其为超微小细胞塑料，这些材料的表征是直径为10-7m的细胞大小，直径为10-7m，并且是1018细胞/cm3的细胞密度，这些塑料的含量为1018个细胞/cm3。 可以使用了解聚合物中超级气体浓度的物理现象，以影响这些材料的性能结构 - 构建处理关系，并有助于设计程序，以制造PI计划生产的新的，更密集的泡沫。 超微小细胞塑料比母体材料具有潜在的优势，以及其他泡沫（例如透明度，高影响力强度，强度与重量比的增加以及改善的热和介电特性）具有潜在的优势。 在更广泛的范围内，了解这些材料合成所涉及的基本现象可用于开发工业技术，例如用于环境安全的泡沫技术，过滤器，光学材料，隔热材料和摄影膜的底物。