Preparation method of high-heat-conductivity composite heat storage material

A composite heat storage material and high thermal conductivity technology, which is applied in the field of preparation of high thermal conductivity composite heat storage materials, can solve the problems of low heat storage efficiency, long temperature control time, low thermal conductivity, etc., and achieves a simple preparation process, no environmental pollution, The effect of improving thermal conductivity

Inactive Publication Date: 2016-10-26
郭舒洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the defects that the thermal conductivity of the current heat storage material itself is low, the temperature control time is long and the heat storage efficiency is low in the application process, a method is provided that removes organic matter from loofah, After loading peach gum concentrate, it is carbonized to prepare carbon fiber material. Since carbon fiber has excellent thermal conductivity, carbon fiber is used as the skeleton of heat storage material, and through the capillary action of the skeleton and the superposition of gravity, it is immersed in the melted single hard Fatty acid glycerides make the inside dense and free of voids, which effectively solves the problems of low thermal conductivity of the heat storage material itself, long temperature control time and low heat storage efficiency in the application process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First collect the mature loofah, after it is naturally air-dried, peel it, wash and dry it, remove the inner seeds to get the loofah, and then cut it into 1cm 3 Loofah small pieces, and according to the mass ratio of 1:5, the loofah small pieces and xylene are stirred and mixed and placed in an Erlenmeyer flask, heated in a water bath at 65°C for 3 hours, then suction filtered and the filter cake is collected, and washed with absolute ethanol and deionized water were washed 3 times, and dried at 65°C for 6 hours to prepare dry loofah fibers; the collected fresh peach gum was washed with water and dried naturally, and the dried peach gum and Stir and mix with deionized water, and then stir magnetically at 4000r / min for 2h. After the stirring is completed and let stand for defoaming for 3h, then rotate evaporate at 65°C to 1 / 10 of the original volume to prepare peach gum concentrate. Ratio 1:5, soak the dry loofah fiber prepared above into peach gum concentrate; soak for ...

example 2

[0018] First collect the mature loofah, after it is naturally air-dried, peel it, wash and dry it, remove the inner seeds to get the loofah, and then cut it into 1cm 3 Loofah small pieces, and according to the mass ratio of 1:5, the loofah small pieces and xylene were stirred and mixed and placed in an Erlenmeyer flask, heated in a water bath at 70°C for 4 hours, then suction filtered and the filter cake was collected, and washed with absolute ethanol and deionized water were washed 4 times, and dried at 70°C for 7 hours to prepare dry loofah fibers; the collected fresh peach gum was washed with water and dried naturally, and the dried peach gum and Stir and mix with deionized water, then magnetically stir at 4500r / min for 2h, after the stirring is completed and stand for defoaming for 4h, then rotary evaporate at 70°C to 1 / 10 of the original volume to prepare peach gum concentrate, according to the mass Ratio 1:5, soak the dry loofah fiber prepared above into the peach gum co...

example 3

[0020] First collect the mature loofah, after it is naturally air-dried, peel it, wash and dry it, remove the inner seeds to get the loofah, and then cut it into 1cm 3 Loofah small pieces, and according to the mass ratio of 1:5, the loofah small pieces and xylene were stirred and mixed and placed in a Erlenmeyer flask, heated in a water bath at 80°C for 5h, then suction filtered and the filter cake was collected, and washed with absolute ethanol and deionized water were washed 5 times, and dried at 80 ° C for 8 hours to prepare dry loofah fibers; the collected fresh peach gum was washed with water and dried naturally, and the dried peach gum and Stir and mix with deionized water, and then stir magnetically at 5000r / min for 3h. After the stirring is completed, let it stand for 4h for defoaming, and then rotate evaporate at 80°C to 1 / 10 of the original volume to prepare peach gum concentrate. Ratio 1:5, soak the dry loofah fiber prepared above into peach gum concentrate; soak fo...

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Abstract

The invention relates to a preparation method of a high-heat-conductivity composite heat storage material, belonging to the technical field of preparation of heat storage materials. According to the preparation method, the defects of long temperature control time and relatively low heat storage efficiency easily caused in an application process because the heat conduction coefficients of heat storage materials prepared at present are relatively low are solved. The preparation method comprises the steps of removing organic matters from loofah sponge, loading a peach gum concentrated solution, and carrying out carbonizing treatment so as to prepare a carbon fiber material; by taking carbon fiber with excellent heat conducting capacity as a skeleton of the heat storage material, immersing the skeleton into melted glycerin monostearate by virtue of superposition of capillarity and gravity, so as to prevent the formation of gaps in the dense inner part of the skeleton. The heat conduction coefficient of the prepared composite heat storage material can be 18W/mk-20W/mk, the latent heat of phase change can reach 60J/g-90J/g, and the heat conducting efficiency is increased by 10%-15%. Furthermore, the preparation process is simple and environmentally friendly, and the environmental pollution is avoided.

Description

technical field [0001] The invention relates to a method for preparing a high thermal conductivity composite heat storage material, which belongs to the technical field of heat storage material preparation. Background technique [0002] Energy is the basis for human survival. With the rapid development of global industrialization, people's demand for energy is becoming more and more urgent. At present, global resources are in short supply and the utilization rate is not high. High-efficiency and clean solar energy has attracted widespread attention. Solar energy has the advantages of cleanness, environmental protection, abundant resources, and sufficient energy supply. Make reasonable and effective use of solar energy. How to improve the utilization rate of solar energy, develop new heat storage materials and effectively solve the problem of solar energy intermittent heat storage and release is the research direction of many scientists at present. [0003] In recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 郭舒洋高玉刚
Owner 郭舒洋
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