SBIR Phase I: Processing of Low-Permeability Polymer Insulating Foam for Use in Extreme Temperature Applications

SBIR 第一阶段：用于极端温度应用的低渗透性聚合物绝缘泡沫的加工

• 批准号: 0638271
• 负责人: Scott Coguill
• 金额: --
• 依托单位: RESODYN CORPORATION
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0638271&HistoricalAwards=false
• 关键词: SBIR; Phase; Processing; Low; Permeability

The Small Business Innovation Research (SBIR) Phase I project seeks to develop a welding technology for joining low permeability polymer insulation (LPPI) foams prior to applying a composite overwrap. The syntactic foam is flexible over a wide range of operating temperatures, and provides a useful combination of thermal protection, low hydrogen permeability, and compressive strength. The major steps for the proposed in-situ welding process consist of (i) using pre-formed strips of uncured LPPI as feedstock, (ii) developing the means for preheating the tapered joint between the pre-molded LPPI sheets, (iii) developing the means and method for preheating the LPPI feedstock, and (iv) developing the means and method for melting and curing the LPPI weld. The proposed technology will enable the fabrication of large-scale cryogenic tanks for hydrogen storage and aerospace applications. In addition, the technology has the potential to reduce microcracks in the composite due to thermal cycling from cryogenic to elevated temperatures.

小企业创新研究（SBIR）第一阶段项目旨在开发一种焊接技术，用于在应用复合外包装之前连接低渗透性聚合物绝缘（LPPI）泡沫。 复合泡沫在宽的操作温度范围内是柔性的，并且提供热保护、低氢渗透性和压缩强度的有用组合。所提出的原位焊接工艺的主要步骤包括（i）使用未固化的LPPI的预成型条作为原料，（ii）开发用于预热预成型LPPI片材之间的锥形接头的装置，（iii）开发用于预热LPPI原料的装置和方法，以及（iv）开发用于熔化和固化LPPI焊缝的装置和方法。 这项技术将使大型低温储罐的制造成为可能，用于储氢和航空航天应用。 此外，该技术具有减少复合材料中由于从低温到高温的热循环而产生的微裂纹的潜力。