SBIR Phase I: Spinning Performance of Melt-Spun Fibers Containing Microencapsulated Phase Change Material

这个小企业创新研究第一阶段项目将研究含有微胶囊相变材料（microPCMs）的熔融纺丝纤维的纺丝性能。微pcm已成功地加入到溶液纺腈纶中，显著提高了其储热能力。然而，在全球生产的数十亿磅非纤维素纤维中，熔融纺丝纤维的产量远远超过丙烯酸纤维的产量。由于对丙烯酸的需求预计将在长期内继续下降，合成纤维技术创新的机会显然在于熔融纺丝纤维。第一阶段的总体目标是对纺丝过程、含有微pcm的聚合物基质和最终产物之间的关系有一个基本的了解。为了实现这一目标，将确定微pcm填充聚酯和/或聚丙烯的可纺性极限。这包括在2000米/分钟的纺丝速度下测定微型pcms的最大浓度。甚至更高。对国家的预期好处包括：(1)熔融纺丝纤维和由此产生的具有增强热能储存能力的织物的商业潜力，以及(2)通过使用该技术来增强国家安全，以延长在极端环境中作战的军事服务成员的耐力和生存能力。具有增强热能储存能力的熔融纺纤维和织物的商业潜力对于服装（例如，袜子，手套，夹克）和工业绝缘市场来说是巨大的，这些市场需要热或冷热控制。关键词相变材料，微pcm，熔融纺丝，纤维纺丝

This Small Business Innovation Research Phase I Project will investigate the spinning performance of melt spun fibers containing microencapsulated phase change materials (microPCMs). MicroPCMs have been successfully incorporated into solution-spun acrylic fibers, significantly increasing their thermal energy storage capability. However, of the billions of pounds of non-cellulosic fibers produced worldwide, melt-spun fiber production far exceeds the amount produced of acrylics. With demand for acrylics expected to continue to decline over the long term, the opportunity for technological innovation in synthetic fibers clearly lies with melt-spun fibers. The overall objective of Phase I is to acquire a fundamental understanding of the relationship between the spinning process, the polymer matrix containing microPCM, and the resulting product. To achieve this the limits of spinnability of microPCM filled polyester and/or polypropylene will be determined. This includes determining the maximum concentration of microPCMs for spinning continuity at 2000 m/min. and higher. Anticipated benefits to the nation include (1) the commercial potential of melt-spun fibers and resulting fabrics with enhanced thermal energy storage capabilities, and (2) an enhancement to national security offered by the use of this technology to extend the endurance and survivability of members of the military services who operate in extreme environments.Commercial potentialThe commercial potential of melt-spun fibers and fabrics with enhanced thermal energy storage capabilities is enormous for the apparel (e.g., socks, gloves, jackets) and industrial insulation markets, where hot or cold thermal control is required.Key wordsPhase change material, microPCM, melt-spun fiber, fiber spinning