Thermochromic fiber and preparation method and application thereof

Abstract

The invention belongs to the field of functional fiber, and particularly relates to thermochromic fiber and a preparation method and application thereof. The thermochromic fiber is of a core-claddingstructure, a core layer of the core-cladding structure is a thermochromic layer, and the cladding layer is a protection layer and positioned outside the core layer. The thermochromic layer is preparedby adopting a thermal softening drawing method. The preparation method includes: obtaining a prefabricated rod of the thermochromic layer, and performing thermal softening drawing on the prefabricated rod to obtain the thermochromic layer fiber, wherein thermal softening drawing is a thermal softening drawing method adopted in an optical fiber preparation process. Compared with existing thermochromic fiber preparation methods, the drawing process is wide in thermochromic material and polymer base material selection range and diverse in structure design; fiber different in section structure can be designed, distribution of different thermochromic materials in the fiber can be controlled accurately, and the preparation method is high in production efficiency and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of functional fibers, and more specifically relates to a thermochromic fiber, its preparation and application. Background technique [0002] People's requirements for the functionalization and intelligence of materials are getting higher and higher, and the market for textile and clothing functions is gradually expanding. Controllable color-changing smart fabrics have become a hot field of exploration and research by scholars from all over the world. In addition to being beautiful, the combination of smart color-changing clothing and sensor devices can also achieve emotional expression and health monitoring. Color-changing fibers are the basis of intelligent color-changing fabrics. The color of this material will change when it is stimulated by external light, heat, humidity, electricity, etc. The color-changing fiber first originated in the United States, and a photochromic fiber was developed to meet the requiremen...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a thermochromic fiber, its preparation and application, which obtains the core of the thermochromic fiber with a core-wrapped structure by adopting the thermosoftening drawing method in the optical fiber preparation process Layer, thereby solving the technical problems of the existing technology to prepare thermochromic fibers with single structure, high preparation cost, limited range of raw material selection and slow production speed.

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