Graphene microcapsules, intelligent thermoregulation fibers and preparation methods thereof

An ene microcapsule, intelligent temperature regulation technology, applied in the field of materials, can solve the problems of unstable fiber quality, fiber agglomeration, complex process flow, etc., to improve thermal conductivity and heat storage performance, improve dispersion and compatibility, improve smoothness effect

Inactive Publication Date: 2018-09-07
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a kind of graphene microcapsule, this microcapsule isolates graphene through shell material, avoids the problem that graphene material is introduced into fiber agglomeration, uneven dispersion causes fiber quality to be unstable, and can be combined with Phase-change microcapsules and fiber spinning solution are used to prepare intelligent temperature-adjusting fibers by wet spinning, which avoids the complex problems of hollow fiber impregnation method and melt composite spinning method.

Method used

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  • Graphene microcapsules, intelligent thermoregulation fibers and preparation methods thereof
  • Graphene microcapsules, intelligent thermoregulation fibers and preparation methods thereof
  • Graphene microcapsules, intelligent thermoregulation fibers and preparation methods thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Preparation of graphene microcapsules: the core material is graphene A, and the shell material is melamine resin.

[0065] The first step is the preparation of melamine prepolymerized aqueous solution: place urea, formaldehyde solution (37wt%) and deionized water in a three-necked flask equipped with a stirrer, thermometer and reflux condenser, stir until the urea is dissolved, and then use triethanolamine The stock solution is adjusted to pH=8-9, melamine is added, and the reaction is kept at 60°C-80°C for 1 hour with stirring at a stirring rate of 450r / min. After dilution, a colorless and transparent aqueous solution of 10wt% melamine prepolymer is obtained.

[0066] The second step is the preparation of graphene aqueous dispersion: ultrasonically disperse graphene A in an aqueous solution (mixing ratio: the mass ratio of graphene material to melamine prepolymer 15:85), and obtain uniformity after centrifugation or standing. The graphene dispersion solution; and then add t...

Embodiment 2

[0071] The difference from Example 1 is only the type of shell material, which is nylon.

[0072] The preparation process is as follows:

[0073] The first step is to prepare the nylon prepolymerization aqueous solution: mix adipoyl chloride and lysine in a mass ratio of 50:8, add 8 times the amount of water to it, adjust the pH of the system between 8-9, and increase the temperature to 25 ~30℃, reaction for 2h; aqueous solution of nylon prepolymer.

[0074] The second step is the preparation of graphene aqueous dispersion: ultrasonically disperse graphene A in an aqueous solution, centrifuge or stand to obtain a uniform graphene dispersion solution; then add a dispersant-Tween 80 (quality graphene 0.5% of A), a stable graphene dispersion is obtained, and the concentration of graphene A is 0.6 wt%.

[0075] In the third step, add the graphene dispersion of the second step to the nylon prepolymer aqueous solution of the first step (the mixing ratio is: the ratio of graphene material t...

Embodiment 3

[0079] The only difference from Example 1 is that the shell material is phenolic resin.

[0080] The preparation process is as follows:

[0081] In the first step, the preparation of the aqueous solution of phenolic prepolymer: take the Resol type phenolic resin prepolymer, add 8 times the amount of water to it, raise the temperature to 70-80°C, and react for 2h; obtain the aqueous solution of the phenolic prepolymer.

[0082] The second step is the preparation of graphene aqueous dispersion: ultrasonically disperse graphene A in an aqueous solution, centrifuge or stand to obtain a uniform graphene dispersion solution; then add a dispersant-Tween 80 (quality graphene 0.5% of A), a stable graphene dispersion is obtained, and the concentration of graphene A is 0.6 wt%.

[0083] In the third step, add the graphene dispersion of the second step to the phenolic prepolymer aqueous solution of the first step (the mixing ratio is: the ratio of graphene material to the phenolic resin prepolyme...

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Abstract

The invention provides graphene microcapsules, intelligent thermoregulation fibers and preparation methods thereof. The graphene microcapsules comprise a core material and a shell material, wherein the core material is a graphene material, and the shell material is a synthetic polymer or natural polymer material; the content of the core material is 15wt%-60wt% preferably. The preparation method ofthe graphene microcapsules comprises the following steps: an aqueous dispersion of the graphene material and a shell material raw material are mixed and emulsified, and a suspension is formed, the aqueous dispersion of the graphene material is prepared from deionized water, graphene and a surfactant; the shell material raw material is a prepolymer of a synthetic polymer or the natural polymer material; a curing agent or an initiator is added to the suspension, a curing reaction is performed, filtering and drying are performed, and the graphene microcapsules are obtained. By graphene microencapsulation, not only are dispersity and compatibility of graphene in a substrate improved, but also heat conduction and storage performance of the microcapsules is improved, a spinning process is optimized, and smoothness of surfaces of graphene modified fibers is improved.

Description

Technical field [0001] The invention relates to the technical field of materials, in particular to a graphene microcapsule, an intelligent temperature-regulating fiber and a preparation method thereof. Background technique [0002] Intelligent heat storage and temperature adjustment fiber is a new type of functional product developed by combining fiber manufacturing technology with phase change heat storage material technology, commonly known as air conditioning fiber, which has a two-way temperature adjustment effect. Traditional cool and thermal insulation fibers are isolated, passive, and unable to automatically adjust and control the temperature. Their essence is still ordinary differentiated fibers or ordinary fibers. The intelligent temperature-regulating fiber has the effect of intelligent temperature-regulating, and can release and absorb heat according to the change of the ambient temperature. When the temperature of the fabric containing phase change material increases...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02D01F1/10D01F2/08D01F6/54
CPCB01J13/02D01F1/10D01F2/08D01F6/54
Inventor 张征标许日鹏王双成吕冬生唐地源
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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