Cellulose/polypyrrole supported composite phase change heat storage material and preparation method thereof

A phase-change heat storage material and composite phase-change technology are applied in the field of cellulose/polypyrrole-supported composite phase-change heat storage materials and their preparation. High thermal efficiency, good biocompatibility and degradability, effects of improving thermal comfort and energy utilization

Active Publication Date: 2020-02-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a composite phase change heat storage material supported by cellulose / polypyrrole and its preparation method, which solves the technical problems of unstable phase change materials and poor heat storage efficiency in the prior art

Method used

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  • Cellulose/polypyrrole supported composite phase change heat storage material and preparation method thereof
  • Cellulose/polypyrrole supported composite phase change heat storage material and preparation method thereof
  • Cellulose/polypyrrole supported composite phase change heat storage material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Weigh 20 g of cellulose nanowire suspension with a solid content of 1.2%, add KH560 dropwise to the cellulose nanowire suspension, and stir magnetically at room temperature for 3 hours to obtain a uniform mixed suspension, in which the cellulose nanowire The mass ratio to KH560 is 1:1; use deionized water to prepare a branched polyethyleneimine aqueous solution with a mass concentration of 25%, add it dropwise to the above suspension, and stir magnetically for 40 minutes at room temperature to obtain a uniform mixture Suspension, wherein the mass ratio of cellulose nanowires to branched polyethyleneimine is 1:0.8, and finally put the mixed suspension into a freeze dryer to freeze-dry, take it out and place it in an oven, and bake it at 110°C Bake for 30 minutes to obtain a cellulose porous material.

[0029] (2) Preparation 1 # Solution: Weigh 0.36M ferric chloride hexahydrate and 0.36M sodium 5-sulfosalicylate into 100mL deionized water, stir magnetically for 45mi...

Embodiment 2

[0033] (1) Weigh 20 g of cellulose nanowire suspension with a solid content of 1.0%, add KH560 dropwise to the cellulose nanowire suspension, and stir magnetically at room temperature for 2 hours to obtain a uniform mixed suspension, in which the cellulose nanowire The mass ratio to KH560 is 1:1.2; use deionized water to prepare a branched polyethyleneimine aqueous solution with a mass concentration of 50%, add it dropwise to the above suspension, and stir magnetically for 50 minutes at room temperature to obtain a uniform mixture Suspension, wherein the mass ratio of cellulose nanowires to branched polyethyleneimine is 1:0.8, and finally put the mixed suspension into a freeze dryer to freeze-dry, take it out and place it in an oven, and bake it at 120°C Dry for 20 minutes to obtain a cellulose porous material.

[0034] (2) Prepare 1# solution: Weigh 0.48M ferric chloride hexahydrate and 0.48M sodium 5-sulfosalicylate into 100mL deionized water, stir magnetically for 50min at ...

Embodiment 3

[0040] (1) Weigh 20 g of cellulose nanowire suspension with a solid content of 1.6%, add KH560 dropwise to the cellulose nanowire suspension, and stir magnetically at room temperature for 2 hours to obtain a uniform mixed suspension, in which the cellulose nanowire The mass ratio to KH560 is 1:0.8; use deionized water to prepare an aqueous solution of branched polyethyleneimine with a mass concentration of 50%, add it dropwise to the mixed suspension, and stir magnetically for 50 minutes at room temperature to obtain a uniform mixed suspension solution, in which the mass ratio of cellulose nanowires to branched polyethyleneimine is 1:1. Finally, the mixed suspension was put into a freeze dryer to freeze-dry, taken out and placed in an oven, and baked at 130° C. for 10 minutes to obtain a cellulose porous material.

[0041] (2) Preparation of 1# solution: Weigh 0.60M ferric chloride hexahydrate and 0.60M sodium 5-sulfosalicylate into 100mL deionized water, stir magnetically for...

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Abstract

The invention relates to a cellulose/polypyrrole supported composite phase change heat storage material and a preparation method thereof, which is obtained by growing polypyrrole in situ on the cellulose porous material and fixing the phase change heat storage material on the polypyrrole modified cellulose porous material through capillary adsorption. The cellulose/polypyrrole supported compositephase change heat storage material utilizes the high conductivity of polypyrrole to quickly convert electric energy into heat energy, rises to a higher temperature in a short time, has high heat storage efficiency, improves thermal comfort and energy utilization rate of heating, reduces energy consumption loss, and has good market application prospects.

Description

technical field [0001] The invention belongs to the field of phase change materials, in particular to a composite phase change heat storage material supported by cellulose / polypyrrole and a preparation method thereof. Background technique [0002] With the increase of a series of heat-consuming projects such as heating area, the corresponding problems of environmental pollution and energy waste are becoming more and more serious. For example, the energy conversion efficiency of thermal power plants, due to the inconsistency of heating and power generation loads, leads to excessive heat energy to be wasted. Therefore, phase-change heat storage materials that store heat like batteries and release energy when needed to maximize energy utilization will be widely used. The electrothermal conversion phase change heat storage material has good heating thermal comfort, and because of the effect of "shifting peaks and filling valleys", it can effectively reduce energy loss and short...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063Y02P20/10
Inventor 隋晓锋陈露莹王碧佳冯雪凌毛志平徐红张琳萍钟毅陈支泽
Owner DONGHUA UNIV
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