摘要:
A fine sheared polymeric nanofiber of a short cut length and a method for shearing the polymeric nanofiber are provided. In some embodiments, the polymeric nanofiber includes: a length range from 10-2000 μm; a length to diameter (L:D) aspect ratio ranging from 20 to 10,000; an average diameter range from 1 nm to 2 μm; and/or two or more different polymers and/or one or more additives. The shortened length of the polymeric nanofiber allows for easy dispersion in certain liquids compared to the same fine fiber in long lengths. The method of shearing polymeric nanofibers comprises milling the polymeric fiber in a liquid solution, performed with wet grinding processes and equipment.
摘要:
Substrates with wet laid staple polymeric nanofibers of short lengths are disclosed. The polymeric nanofibers can be surface coated on a non-woven or woven substrates, wet laid with other fiber types to create a nonwoven substrate or wet laid onto themselves to form a nanofiber-only mat.
摘要:
The invention relates to improved hydrophobicity and water protection of a fibrous fabric substrate (cotton, synthetics and/or their blends) by depositing a thin nanofiber layer and coating with a dispersion of fluoropolymers (fluorinated acrylic copolymers) that are alternative perfluorinated chemicals (PFCs) based on short-chain chemistry of varying chain length (C4, C6, C8, C10, C12, C14, etc.) perfluoroalkyl constituents.