Preparation method of temperature regulating fiber

Abstract

The invention discloses a preparation method of a temperature regulating fiber. The method comprises the following steps: 1, carrying out two-stage dipping, squeezing, crushing, ageing, yellowing reaction, filtration, deaeration and maturation on cellulose pulp to obtain a spinning solution; 2, packaging phase change paraffin in the honeycomb micropores of a packaging material honeycomb silica to prepare phase change particles, adding an osmotic agent, an emulsifier and a ketose cross-linking agent, and uniformly mixing to prepare a phase change emulsion; 3, fully mixing the phase change emulsion with the spinning solution to prepare a phase change spinning solution, wherein the addition amount of the phase change particles is 5-25wt% of alpha-cellulose in the spinning solution; and 4, carrying out spinning formation on the phase change spinning solution, and post-processing to obtain the temperature regulating fiber. The phase change fiber prepared in the invention has the advantages of stable phase change temperature, good phase change performance, long service life and high physical and mechanical performances.

Description

technical field [0001] The invention relates to the technical field of functional cellulose fibers, in particular to a technology for preparing temperature-regulating fibers. Background technique [0002] Temperature-regulating viscose fiber is a new type of functional viscose fiber product. It is a smart fiber developed by ingeniously integrating natural cellulose as the main raw material with phase change materials. Among the silk viscose, it is a functional differentiated viscose fiber made by spinning, post-processing and other processes. [0003] Temperature regulation viscose fiber can absorb or release a large amount of heat during the phase change process by using phase change substances, and at the same time keep the temperature constant. Meet the needs of human comfort in overheated or overcooled external environments. [0004] For the preparation of temperature-regulating fibers, there are relevant research reports in the prior art: the smart striped viscose fib...

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Problems solved by technology

[0004] For the preparation of temperature-regulating fibers, there are relevant research reports in the prior art: the smart striped viscose fiber (patent application number is 200710090251.3) developed by Beijing Julong Bofang Science and Technology Institute in 2007 has a higher dry breaking strength than Low (about 1.42CN / dtex), the fiber fineness is relatively large (above 1.67dtex), and the patent is still in the small-scale test stage, and there is no report on its large-scale production; it was developed by Longda Differential Chemical Fiber Co., Ltd. in 2014 The temperature-adjusted viscose fiber production method (patent application number is 201410616024.X), the particle size of the phase change material solution is relatively large, between 1 and 6um, and the dispersion is poor, and the process steps are cumbersome, which is not conducive to large mass production

Moreover, the phase change material used in the prior art is a phase change microcapsule, which has a limited lifespan, which affects the phase change performance of the phase change fiber.