Spinning and drafting integrated preparation device and method forhigh-performance micro-nano fiber yarn

Abstract

The invention relates to the technical field of electrostatic spinning, in particular to a spinning and drafting integrated preparation device and method for high-performance micro-nano fiber yarn. The device comprises a spinning unit, a yarn forming unit used for twisting spun yarn of the spinning unit into primary yarn, and a hot drafting unit used for heating and drafting the primary yarn of the yarn forming unit. The prepared micro-nano fiber yarn is more uniform in structure, higher in fiber orientation degree, higher in crystallinity and stronger in mechanical property, and the yield is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of electrospinning, in particular to a spinning and drafting integrated high-performance micro-nano fiber yarn preparation device and a method thereof. Background technique [0002] Electrospinning micro-nano fiber yarn preparation technology is a new spinning technology that uses electrospinning technology to obtain micro-nano fibers, and then bundles and twists micro-nano fibers into yarns. It is prepared by electrospinning micro-nano fiber yarns Compared with the traditional micron fiber yarn, the micronano fiber yarn obtained by the technology has a higher aspect ratio and a larger specific surface area. It can replace the traditional micron fiber yarn and be processed into Textiles with special properties endow textiles with new sound, light, electricity, magnetism, heat and mechanical properties, etc., and have broad application prospects in high-end fields such as biomedical textiles and smart wearabl...

AI Technical Summary

Problems solved by technology

However, there are still many defects in the micro-nano fiber yarn prepared by this method: one is that the degree of orientation and crystallinity of the fibers in the prepared yarn are very low; the other is that the uniformity and mechanical properties of the prepared yarn are relatively low. Both are poor and cannot meet the needs of traditional textile processing technology, which is also the most important problem restricting the practical application of micro-nano fiber yarn; third, the spinning process is difficult to control, and the continuity and output are low

However, the yarn prepared by it has a multi-layer core-spun structure, and the degree of fiber orientation and crystallinity is low, resulting in significantly lower mechanical properties of the yarn than traditional micron fiber yarns, which cannot meet the needs of practical applications.

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