Phase transition temperature-adjusting cellulosic fiber prepared by solvent method and preparation method thereof

Abstract

The invention discloses phase transition temperature-adjusting cellulosic fiber prepared by a solvent method. The fiber comprises a porous material, a macromolecular phase-changing material and a substance with a far infrared absorption function, wherein mass ratio of the porous adsorption material to the substance with the far infrared absorption function to the macromolecular phase-changing material is 1-30:1-50:10-100. Melting enthalpy value of the fiber is greater than or equal to 5.5 J / g, and crystalline enthalpy value is greater than or equal to 5.3 J / g. a preparation method of the fiber comprises the following steps: preparing a composite macromolecular phase-changing porous material; preparing a spinning solution; and spinning. According to preparation of the composite macromolecular phase-changing porous material, the porous adsorption material and the substance with the far infrared absorption function are added into the molten macromolecular phase-changing material to carry out adsorption and mixing. The phase transition temperature-adjusting cellulosic fiber prepared by the method has characteristics of pollution-free production process and green and environmental-protection product. As the porous adsorption material is used to adsorb the macromolecular phase-changing material, loss during formation process is minimized, and the phase transition temperature-adjusting function of the fiber is guaranteed.

Description

technical field [0001] The invention relates to a phase-change temperature-regulating cellulose fiber and a preparation method thereof, in particular to a phase-change temperature-regulating cellulose fiber prepared by using cellulose pulp and composite phase change materials as raw materials and ionic liquid as a solvent The method and the method belong to the technical field of textiles. technical background [0002] Ionic liquids have the characteristics of low vapor pressure, stable performance, no volatility, and good solubility. They are widely used in organic synthesis, electrochemistry, material chemistry and other fields, and have good research and application prospects. At the same time, cellulose has attracted much attention as an environmentally friendly renewable resource. In recent years, using ionic liquids as solvents to dissolve cellulose to prepare cellulose fibers has become one of the key research directions in this field. [0003] With the improvement ...

AI Technical Summary

Problems solved by technology

However, in the prior art, due to the complex synthesis process of microcapsules and the reaction between solvents and additives, the phase change fiber has high cost and unsatisfactory functionality, and the process of wet spinning process is long and inefficient. In the production process of viscose fiber, chemical raw materials such as sodium hydroxide, carbon disulfide and sulfuric acid are used, which cause serious pollution. In addition, during the fiber forming process and subsequent finishing process, the loss of phase change materials is serious, and the conversion rate of light energy absorption is not high. Therefore, , inventing a new phase-change temperature-regulating fiber with no pollution in the production process, green products and better functionality has become an urgent problem to be solved in our research and development