A functional fiber and its microfluidic spinning device and fiber preparation method

Abstract

The invention discloses a functional fiber, a microfluidic spinning device and a fiber preparation method thereof. The microfluidic spinning device of the present invention includes a control mechanism, a nascent fiber forming mechanism, an airflow gathering and drafting mechanism, and a finishing and winding mechanism; the fiber preparation method includes sequentially injecting spinning liquid or coagulation liquid into a spinning tank, standing still Degassing; the fiber component design is realized online through the control mechanism; the spinning solution or coagulation solution enters the microfluidic spinning chip through the spinning solution pipeline, and gathers in the common spinning solution pipeline to form primary fibers; the primary fibers are sequentially passed through the airflow Concentrated drafting area drafting, curing, fiber heating dryer drying, and finally winding to the winding roller, so that the structure controllable function can design the fiber. The microfluidic spinning device of the present invention designs the fiber structure through programming, the preparation method is controllable, and realizes the complex structure and multifunctionality that are difficult to realize by other spinning methods. The preparation process is simple, the repeatability is good, and the application field is wide.

Description

technical field [0001] The present invention relates to the technical field of microfluidic spinning, in particular to a microfluidic spinning device for fibers with controllable structure and designable functions, a method for preparing fibers spun on the device and the obtained structure controllable functions Designable fibers. Background technique [0002] The structure of the fiber determines some properties of the fiber to a certain extent. For example, the cross section of the cotton fiber is round and hollow inside. This structure makes the cotton fiber have good warmth retention, air permeability, hygroscopicity and dyeing performance; the cross section of the silk is Composed of two silk fibroin coated with sericin, the special structure formed by the triangular cross-section of silk fibroin and the lamellar structure of sericin makes silk have a luster that cannot be compared with other fibers. In order to obtain the good properties of this kind of natural fibers...

AI Technical Summary

Problems solved by technology

The phase separation method is to obtain a nanoporous foam through several steps such as dissolution, gelation, extraction, coagulation and drying, and the solid polymer is transferred into the foam pores to obtain polymer nanofibers; like the self-assembly method, its The disadvantage is that the transfer process takes too long

Mechanical stretching can produce very long single fiber filaments, but only those viscoelastic materials that can withstand large enough stress stretching deformation may use this method, which limits the range of applications

The operation method of electrospinning method is relatively simple, and it can continuously spin fiber filaments, but it has high requirements for equipment and production environment, and poor controllability. fiber for design

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