SBIR Phase I: Investigation of Phase Change Materials Microcapsules for High Temperature Applications

SBIR 第一阶段：高温应用相变材料微胶囊的研究

• 批准号: 9560213
• 负责人: Yvonne Bryant
• 金额: $ 7.46万
• 依托单位: Triangle Research and Development Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9560213&HistoricalAwards=false
• 关键词: SBIR; Phase; Investigation; Change; Materials

9560213 Bryant This Small Business Innovation Research (SBIR) Phase I project will investigate microencapsulation of phase change materials (PCMs) in a form stable enough to withstand the melt spinning process. If micro PCMs could be incorporated into melt-spun fibers, the resulting fabrics (polypropylene, nylon, polyester) would have greatly enlarged thermal storage capacities. Micro PCMs have been successfully incorporated into low temperature, solution-spun acrylic fibers and fabric samples, increasing their thermal storage tenfold. However, at melt spinning temperatures (higher than 200oC) micro PCMs particles lose their core material, which corrupts the melt spinning process. Before these materials can successfully be incorporated into melt spun fiber, capsules must be available with more stable wall structure. Phase I will use differential scanning calorimetric (DSC) and thermogravimetric analysis (TGA) to establish the behavior of current micro PCMs at temperatures exceeding 200oC and to understand the mechanism of microcapsule failure. On this basis microcapsules will be produced with modified wall structures. Their stability at high temperature will be compared to that of existing microcapsules. The most promising concepts for thermal stability of micro-PCMs would be pursued in Phase II. As micro-PCMs that are stable at high melt-spinning temperatures are made, thermally enhanced materials can be fabricated and marketed from melt spun fibers for apparel and industrial insulation materials, where hot or cold thermal control is needed.

小行星9560213 这个小企业创新研究（SBIR）第一阶段项目将研究相变材料（PCM）的微胶囊化，其形式稳定到足以承受熔融纺丝过程。 如果微相变材料可以被纳入熔纺纤维，所产生的织物（聚丙烯，尼龙，聚酯）将有极大地扩大蓄热能力。 微相变材料已成功地应用于低温、溶液纺丝的腈纶纤维和织物样品中，使其储热能力提高了十倍。 然而，在熔融纺丝温度（高于200 ° C）下，微PCM颗粒失去其芯材料，这破坏了熔融纺丝过程。 在这些材料成功融入熔纺纤维之前，胶囊必须具有更稳定的壁结构。 第一阶段将使用差示扫描量热法（DSC）和热重分析（TGA）来确定当前微PCM在超过200 ℃的温度下的行为，并了解微胶囊失效的机制。 在此基础上，将生产具有改性壁结构的微胶囊。 它们在高温下的稳定性将与现有的微胶囊进行比较。 最有前途的微型相变材料热稳定性概念将在第二阶段进行研究。 随着在高熔纺温度下稳定的微PCM的制造，热增强材料可以由用于服装和工业绝缘材料的熔纺纤维制造和销售，其中需要热或冷的热控制。