Functional fiber and microfluidic spinning device and fiber preparing method thereof

Abstract

The invention discloses a functional fiber and a microfluidic spinning device and fiber preparing method thereof. The microfluidic spinning device comprises a control mechanism, a nascent fiber forming mechanism, an airflow gathering drafting mechanism and an after-finishing and winding mechanism. The fiber preparing method includes the steps that spinning liquid or solidification liquid is sequentially injected into a spinning can, and standing defoaming is carried out; fiber constituent designing is online achieved through a control mechanism; the spinning liquid or the solidification liquidenters a microfluidic spinning chip through spinning liquid pipes, is converged in a public spinning liquid pipe, and is collected to form a nascent fiber; the nascent fiber is drafted through the airflow gathering drafting mechanism, solidified and dried through a fiber heating drier in sequence, and is wound to a winding roller finally, and the structure-controllable and function-devisable fiber is obtained. According to the microfluidic spinning device, the structure of the fiber is designed through programming, a preparing method is controllable, a complex structure and the multifunctionality which are difficult to achieve with other spinning methods are achieved, the preparing process is simple, repeatability is good, and application fields are broad.

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

Images