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

该小型企业创新研究（SBIR）第二阶段项目继续开发含有微胶囊相变材料（microPCM）的熔纺纤维的纺丝性能。在阶段I中，每根长丝小于3旦尼尔的聚丙烯纤维被证明具有良好的物理性能（韧度、断裂伸长率百分比、模量等）平衡。和热能储存能力（潜热含量）。第二阶段将集中在工艺和材料变量的影响，特别是，结构和性能的纺纱纤维，并在一般情况下，整个纺纱过程。 一个关键的目的是将微胶囊湿饼转化为分散良好的微PCM/聚合物浓缩物，其不含挥发性组分，用于添加到原始聚合物中并挤出成纤维。创新的纺丝概念将用于改善微相变材料的捕获，以最大限度地提高热能储存性能。具有增强的热能储存能力的熔纺纤维和所得织物的商业可用性将使产品具有上级的性能，用于需要在冷或热环境中的舒适性、耐久性或生存性的情况。因此，这种生产高质量织物的技术的完善可能是纺织工业的重大突破。

This Small Business Innovation Research (SBIR) Phase II project continues the development of the spinning performance of melt spun fibers containing microencapsulated phase change materials (microPCMs). In Phase I, polypropylene fibers less then 3 denier per filament were demonstrated with a good balance of physical properties (tenacity, percent breaking elongation, modulus, etc.) and thermal energy storage capability (latent heat content). Phase II will focus on process and materials variables that affect, in particular, the structure and properties of the as-spun fiber, and in general, the overall spinning process. A key objective is to convert the microcapsule wet cake into a well-dispersed microPCM/polymer concentrate devoid of volatilizing components for adding to virgin polymer and extruding into fiber. Innovative spinning concepts will be employed to improve the capture of microPCMs to maximize thermal energy storage properties. The commercial availability of melt spun fibers and resulting fabrics with enhanced thermal energy storage capabilities will enable products with superior performance for use in situations where comfort, endurance, or survivability in cold or hot environments is demanded. Thus, the perfection of this technology for the production of good quality fabric could be a major breakthrough in the textile industry.