A medium and low temperature phase change cold storage material and its preparation method

A cold storage material and low-temperature phase change technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of low heat transfer coefficient, high cost, and low cold storage performance, and achieve high thermal conductivity, low cost, and cold storage The effect of performance improvement

Inactive Publication Date: 2019-04-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a medium and low temperature phase change cold storage material with a melting point close to 5°C and a phase change with a large latent heat of fusion for the problems of low cold storage performance, low heat transfer coefficient and high cost of the current medium and low temperature phase change materials. Material

Method used

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  • A medium and low temperature phase change cold storage material and its preparation method

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Effect test

Embodiment 1

[0022] A medium and low temperature phase change cold storage material, consisting of nonanol, n-pentadecane and water; the mass of alcohols is 67% of the total mass; the mass of alkanes is 23% of the total mass; the mass of water is 10% of the total mass %; The total mass is the mass sum of mercaptans, alkanes and water;

[0023] A method for preparing a medium-low temperature phase change cold storage material, the specific steps are as follows:

[0024] Step 1. Mix the nonanol material and water at 37°C for 15 minutes to obtain a mixed solution;

[0025] Step 2: Add n-pentadecane to the mixed solution obtained in Step 1; mix evenly and cool to room temperature to obtain the required medium-low temperature phase change cold storage material; see Table 1 for performance characteristics.

[0026] In Example 1, nonanol was purchased from Nanjing Huangpu Petrochemical Co., Ltd., n-pentadecane was purchased from Aladdin Reagent Company, and the water was tap water

Embodiment 2

[0028] A medium and low temperature phase change cold storage material, composed of n-decyl alcohol, n-pentadecane and water; the mass of alcohols is 65% of the total mass; the mass of alkanes is 21% of the total mass; 14%; said total mass is the mass sum of mercaptans, alkanes and water;

[0029] A method for preparing a medium-low temperature phase change cold storage material, the specific steps are as follows:

[0030] Step 1. Mix the n-decyl alcohol material and water at 37°C for 15 minutes to obtain a mixed solution;

[0031] Step 2: Add n-pentadecane to the mixed solution obtained in Step 1; mix evenly and cool to room temperature to obtain the required medium-low temperature phase change cold storage material; see Table 1 for performance characteristics.

Embodiment 3

[0033] A medium and low temperature phase change cold storage material, composed of undecanol, n-pentadecane and water; the mass of alcohols is 61% of the total mass; the mass of alkanes is 23% of the total mass; 16%; said total mass is the mass sum of mercaptans, alkanes and water;

[0034] A method for preparing a medium-low temperature phase change cold storage material, the specific steps are as follows:

[0035] Step 1, mixing the undecyl alcohol material and water at 37°C for 15 minutes to obtain a mixed solution;

[0036] Step 2: Add n-pentadecane to the mixed solution obtained in Step 1; mix evenly and cool to room temperature to obtain the required medium-low temperature phase change cold storage material; see Table 1 for performance characteristics.

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Abstract

The invention relates to a medium-low temperature phase change cold storage material and a preparation method thereof, in particular to an alcohol group-alkyl group mixture medium-low temperature phase change cold storage material with the medium-low melting point and higher latent heat and application of the material, belongs to the field of phase change materials, and discloses a medium-low temperature phase change cold storage material based on nonyl alcohol and a preparation method and application of the material. The preparation method comprises the steps that under the certain conditions, mixed liquid is formed by regulating and controlling the proportion of the nonyl alcohol, n-pentdecne and water, the liquid is mechanically mixed to be uniform and then cooled to the room temperature, and the medium-low temperature phase change cold storage material is obtained. The cold storage material is in a liquid state at the room temperature of 0 DEG C-10 DEG C, can be applied to containers in different shapes and is free of corrosivity and suitable for refrigerated transportation of medicine, food freshness keeping and the like. The medium-low temperature phase change cold storage material is simple in component proportion, wide in source, low in cost and suitable for industrialized popularization.

Description

technical field [0001] The invention relates to a medium and low temperature phase change cold storage material and its preparation method, in particular to a medium and low temperature phase change cold storage material with a medium and low melting point and a large latent heat mixture of alcohol groups and alkyl groups and its application, belonging to phase change materials field. Background technique [0002] Phase change materials are widely used in industry, life, medical treatment, etc. However, there are still problems in durability, cold storage performance and economy in the application process. [0003] At present, the research on phase change cold storage materials is mainly divided into organic phase change cold storage materials and inorganic phase change cold storage materials. The performance of organic phase change cold storage materials is stable, and there will be no phenomenon of supercooling or phase separation, and the corrosion of the container is re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/06Y02E60/14
Inventor 严乙铭倪伟肖若耘
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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