Micro-fibers and Nano fibers Yiping Qiu Donghua university Fall 2004
Micro-fibers and Nano fibers Yiping Qiu Donghua University Fall, 2004
Micro fibers Definition Fibers of i denier Manufacturing of microfibers Bicomponent fibers ● Island in sea ● Citrus
Micro fibers Definition ◼ Fibers of < 1 denier Manufacturing of microfibers ◼ Bicomponent fibers: ⚫ Island in sea ⚫ Citrus
Island in sea Manufacturing process Suspension of droplets of one component in matrix of the other Two components should have similar melting temperatures Can make composite fiber To obtain the microfiber from the composite fiber, the matrix should be soluble such as polyvinyl alcohol Extremely small fibers possible: <0. 1 denier
Island in sea Manufacturing process ◼ Suspension of droplets of one component in matrix of the other ◼ Two components should have similar melting temperatures ◼ Can make composite fiber ◼ To obtain the microfiber from the composite fiber, the matrix should be soluble such as polyvinyl alcohol ◼ Extremely small fibers possible: < 0.1 denier
Island in sea Application ■ synthetic leather a specialty wipes a ultra-high filtration materials artificial arteries
Island in sea Application ◼ synthetic leather ◼ specialty wipes ◼ ultra-high filtration materials ◼ artificial arteries
Citrus or Segmented pie Manufacturing Two components: noncompatible but with similar T m such as pet and nylon 6 Citrus like or hollow citrus 米 NYLON HOLL OW PIE WEDGE TIPPED TRIL OBAL SEGMENTED CROSS CONJUGATE
Citrus or Segmented pie Manufacturing ◼ Two components: noncompatible but with similar Tm such as PET and Nylon 6 ◼ Citrus like or hollow citrus