Composite phase change temperature control material based on expanded graphite and non-woven fabric and preparation method of composite phase change temperature control material

A technology of expanded graphite and composite phase change, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of easy leakage, temperature-controlled non-woven composite materials are fragile, etc., and achieve high thermal conductivity and phase transition temperature. Stable, structurally stable effect

Pending Publication Date: 2022-07-29
GUILIN UNIV OF ELECTRONIC TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

By improving the temperature control stability of phase change temperature control non-woven materials, reducing the production cost of temperature control non-woven materials, finding a simplified production process for phase change temperature control non-woven materials, and solving the problem of easy temperature control non-woven composite materials Damage and leakage problems

Method used

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  • Composite phase change temperature control material based on expanded graphite and non-woven fabric and preparation method of composite phase change temperature control material
  • Composite phase change temperature control material based on expanded graphite and non-woven fabric and preparation method of composite phase change temperature control material
  • Composite phase change temperature control material based on expanded graphite and non-woven fabric and preparation method of composite phase change temperature control material

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Embodiment 1

[0065] A preparation method of a composite phase change temperature control material based on expanded graphite and non-woven fabric, comprising the following steps:

[0066] Step 1, the preparation of expanded graphite G and n-octadecane Oct composite material, firstly, under the condition that the treatment temperature is 950 °C and the treatment time is 30 s, the graphite is treated into expanded graphite, and then n-octadecane and expanded graphite are used to satisfy the conditions of The mass ratio is 17:3 for mixing treatment. The specific treatment method is as follows: under the condition of 60 °C, n-octadecane is added dropwise to the expanded graphite and stirred to disperse evenly. Then, the heating temperature is 60 °C, and the heating time is The expanded graphite and n-octadecane composite material can be obtained by vacuum adsorption under the condition of 24 h, abbreviated as 15% G-O;

[0067] Step 2, the preparation of composite phase change temperature contr...

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Abstract

The invention discloses a composite phase change temperature control material based on expanded graphite and non-woven fabric, which is prepared by taking n-octadecane, expanded graphite and non-woven fabric as raw materials through high-temperature modification, vacuum adsorption and a hot pressing method. The obtained material has the characteristics of flexibility, phase change heat storage and temperature control performance. Wherein n-octadecane is a phase change material and has the functions of phase change heat storage and temperature control; the expanded graphite is a framework and plays a heat conduction role; the non-woven fabric serves as a carrier and plays a supporting role. The material can be applied to the fields of heat conduction temperature control and heat storage, the heat storage density is 43.78-105.45 j/g, and the heat conductivity coefficient is 0.762-0.932 W/(m.K).

Description

technical field [0001] The invention relates to the field of phase change materials and textiles, in particular to a composite phase change temperature control material based on expanded graphite and non-woven fabrics and a preparation method thereof. Background technique [0002] Phase change materials have the advantages of high latent heat, high chemical stability and excellent cycle performance, which can realize efficient storage of thermal energy and intelligent regulation of temperature. However, it also has the disadvantages of low thermal conductivity, easy leakage and difficult application. In order to solve these problems, many solutions have been proposed, such as: microcapsule shaping, polymer-based shaping and porous-based shaping. [0003] In the prior art such as 1 (Solar Energy Materials and Solar Cells, Vol. 225, 2021, DOI: 10.1016 / j.solmat.2021.111069), Zhang et al. prepared polyethylene glycol / dioxide using an in-situ polymerization template method of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 徐芬张国荣孙立贤魏胜刘昭宇夏永鹏宋领君韩存昊王合会罗勇邹勇进张焕芝
Owner GUILIN UNIV OF ELECTRONIC TECH
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