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

这个小型企业创新研究（SBIR）二期项目继续开发含有微胶囊相变材料（microPCMs）的熔融纺丝纤维的纺丝性能。在第一阶段，聚丙烯纤维每长丝低于3旦，具有良好的物理性能（韧性、断裂伸长率、模量等）和热能储存能力（潜热含量）的平衡。第二阶段将侧重于工艺和材料变量，特别是影响纺丝纤维的结构和性能，以及总体上影响整个纺丝过程。一个关键的目标是将微胶囊湿饼转化为分散良好的微pcm /聚合物浓缩物，没有挥发性成分，可以添加到原始聚合物中并挤压成纤维。将采用创新的纺丝概念来改善微型pcm的捕获，以最大限度地提高热能储存性能。熔融纺丝纤维的商业可用性以及由此产生的具有增强的热能储存能力的织物将使产品具有卓越的性能，可用于要求在冷或热环境下的舒适性、耐久性或生存性的情况。因此，这一技术的完善可以生产出高质量的织物，这可能是纺织工业的一个重大突破。

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.