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A light-to-heat conversion, heat storage and temperature-regulating cellulose fiber and its preparation method

A cellulose fiber, heat storage and temperature adjustment technology, applied in the field of chemical fibers, can solve the problems of uneven dispersion, overcooling, and easy agglomeration of fast-heating pulp, so as to ensure functionality and uniformity of functions, and overcome uneven dispersion , the effect of reducing supercooling

Active Publication Date: 2021-03-30
TIANJIN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patented technology simply adds the functional components (instant heat slurry and temperature-adjusting materials, etc.) directly after simple dispersion, and the prepared instant heat slurry still has uneven dispersion, unstable system, and spinning viscose When blending, the technical problem of easy agglomeration; it does not disclose the preparation method of phase change energy storage microcapsules, that is, the use of common phase change energy storage microcapsules on the market has the technical problem of supercooling, and the above components The addition affects the mechanical properties of the fiber

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation method of the light-to-heat conversion, heat storage and warmth-keeping cellulose fiber with a specification of 1.33dtex*38mm is as follows:

[0046] 1. Preparation of graphene dispersion system

[0047] Prepare a hydrophilic graphene oxide dispersion slurry by a known oxidation-reduction method, then wash with distilled water until the solution is neutral; and grind with a sand mill, the particle size D90 is 1.651 μm, to obtain a neutral graphene oxide dispersion slurry , the massfraction of graphene oxide is 4.2wt%;

[0048] Combined with the cellulose fiber production process, using sodium hydroxide as a green reducing agent, add 4.0wt% sodium hydroxide to the above-mentioned neutral graphene oxide dispersion slurry; react at 60°C and 1100r / min stirring speed for 4.0h, Then continue to add 0.5wt% carboxymethylcellulose under this condition, and continue to disperse for 90min; cool down to 10°C for later use, and finally prepare a graphene dispersion ...

Embodiment 2

[0062] The preparation method of the light-to-heat conversion, heat storage and warmth-keeping cellulose fiber with a specification of 1.67dtex*38mm is as follows:

[0063] 1. Preparation of graphene dispersion system

[0064] The hydrophilic graphene oxide dispersion slurry was prepared by a known oxidation-reduction method, and then washed with distilled water until the solution was neutral; and ground with a sand mill, the particle size D90 was 1.896 μm to obtain a neutral graphene oxide dispersion slurry , the mass fraction of graphene oxide is 5.4wt%; In combination with the cellulose fiber production process, sodium hydroxide is used as a green reducing agent, and sodium hydroxide is added to the above-mentioned neutral graphene oxide dispersion slurry, and its mass fraction is 4.49wt%. , react at 79°C and 925r / min stirring speed for 3.0h, then continue to add polyvinylpyrrolidone under this condition, its mass fraction is 1.0wt%, and continue to disperse for 65min; cool...

Embodiment 3

[0076] The preparation method of the light-to-heat conversion, heat storage and warmth-keeping cellulose fiber with a specification of 2.22dtex*51mm is as follows:

[0077] 1. Preparation of graphene dispersion system

[0078] Prepare a hydrophilic graphene oxide dispersion slurry by a known oxidation-reduction method, then wash with distilled water until the solution is neutral; and grind with a sand mill, the particle size D90 is 2.135 μm, to obtain a neutral graphene oxide dispersion slurry , the mass fraction of graphene oxide is 6.5wt%; In combination with the cellulose fiber production process, sodium hydroxide is used as the green reducing agent, and sodium hydroxide is added to the above-mentioned neutral graphene oxide dispersion slurry, and its mass fraction is 5.0wt% %, react at 95°C and 816r / min stirring speed for 2.0h, then continue to add carboxymethylcellulose under this condition, its mass fraction is 1.5wt%, and continue to disperse for 40min; cool down to 20°...

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Abstract

The invention provides a photo-thermal conversion, heat storage and temperature regulation cellulose fiber with the graphene content of 0.45-1.91 wt%, the zirconium carbide content of 0.47-0.95 wt% and the phase change energy storage microcapsule content of 4.7-9.5 wt%, and further provides a preparing method of the fiber. The preparing method includes the steps of preparing a graphene dispersingsystem, preparing a phase change energy storage microcapsule sizing agent with a photo-thermal material and zirconium carbide, preparing a functional cellulose spinning solution, and conducting spinning. Under the same initial testing conditions and the irradiation of sunlight or an infrared lamp for 15 minutes, compared with an ordinary cellulose fiber, the prepared photo-thermal conversion, heatstorage and temperature regulation cellulose fiber has the temperature raised by 9.7-29.9 DEG C, the visible light absorption rate increased by 30-55%, the fiber enthalpy value of 8.1-15.5 J / g and the fiber phase change temperature of 25.4-36.6 DEG C.

Description

technical field [0001] The invention belongs to the chemical fiber technology in the field of textile technology, and specifically relates to a light-to-heat conversion, heat storage and temperature-regulating cellulose fiber and a preparation method thereof. Background technique [0002] With the intensification of competition in the textile industry, the entire industry urgently needs new materials and technologies to realize the functionalization and differentiation of textile materials. In daily life, the warmth and lightness of textiles are two contradictory concepts, which need to be solved by the development of science and technology in the textile industry. [0003] Photothermal materials can convert light energy into heat energy under light, and are a new type of functional material, mainly including organic base, metal base, carbon base and semiconductor. It is favored because it can convert light energy into heat energy, and it has been widely used in textile and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/10D01F2/10B01J13/14C08F120/14C08F2/44C08K3/14
CPCB01J13/14C08F2/44C08F120/14C08K3/14C08K2201/011D01F1/106D01F2/10
Inventor 李昌垒刘长军马君志齐鲁
Owner TIANJIN POLYTECHNIC UNIV
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