Preparation method and preparation device of porous medium composite phase-change material

A technology of composite phase change materials and porous media, which is applied in the field of preparation methods and preparation devices of porous media composite phase change materials, can solve the problems of poor encapsulation effect, unsuitability for mass production, and low filling amount of phase change matrix, and achieve Improved encapsulation effect, strong durability, and enhanced encapsulation effect

Inactive Publication Date: 2017-05-24
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a preparation method and a preparation device of a porous medium composite phase change material, to at least solve the problems of low filling amount of phase change matrix, poor encapsulation effect, and existing The preparation device of composite phase change materials is only suitable for preparing samples on a laboratory scale, and is not suitable for mass production and other issues

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  • Preparation method and preparation device of porous medium composite phase-change material
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  • Preparation method and preparation device of porous medium composite phase-change material

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preparation example Construction

[0040] In order to solve the problems of low filling amount of phase change matrix and poor encapsulation effect of existing methods for preparing composite phase change materials, this embodiment provides a method for preparing porous media composite phase change materials, which specifically includes the following steps:

[0041] 1) Vacuum treatment: the porous support material is placed in the packaging composite container and sealed by a stop valve, and then the packaging composite container is evacuated by a vacuum pump. When the internal pressure of the packaging composite container is lower than 0.05Mpa, the Heating the porous support material, raising the temperature to 40-70°C, keeping it for 40-60 minutes, then closing the vacuum pump and stop valve and stopping heating to obtain the processed porous support material;

[0042] 2) Preparation of organic precursor solution: mix organic solvent, oleylamine and epoxy resin at a volume ratio of 3-8:1-1.5:1 to obtain an org...

Embodiment 1

[0057] Using the preparation device of the porous media composite phase change material provided by the present invention, the porous media composite phase change material is prepared by the following method:

[0058] (1) Weigh 5g of expanded graphite (density 0.005g / mL), place it in a packaged composite container, open the electromagnetic stop valve after sealing, turn on the vacuum pump, evacuate until the pressure in the packaged composite container is lower than 0.05MPa, and then turn on the temperature control instrument, heat the packaged composite container through the second heating jacket, raise the temperature to 40°C, keep it for 50 minutes, then turn off the vacuum pump and shut-off valve, and turn off the temperature controller;

[0059] (2) Measure 1000mL of petroleum ether, slowly add 250mL of oleylamine and 250mL of epoxy resin (EP-16), stir evenly, and make an organic precursor;

[0060] (3) Weigh 5g of paraffin wax with a phase change temperature of 30-40°C, ...

Embodiment 2

[0065] Using the preparation device of the porous media composite phase change material provided by the present invention, the porous media composite phase change material is prepared by the following method:

[0066] (1) Weigh 20g of carbon fiber (density 0.08g / mL) and place it in a packaging composite container. After sealing, open the electromagnetic stop valve, turn on the vacuum pump, and vacuum until the pressure in the packaging composite container is lower than 0.05MPa, then turn on the temperature controller. , heat the packaged composite container through the second heating jacket, raise the temperature to 40°C, keep it for 50 minutes, then turn off the vacuum pump and the shut-off valve, and turn off the temperature controller;

[0067] (2) Measure 400mL of dichloromethane, slowly add 50mL of oleylamine and 50mL of epoxy resin (EP-16), stir evenly, and make an organic precursor;

[0068] (3) Weigh 30g of paraffin wax with a phase change temperature of 30-40°C, place...

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Abstract

The invention discloses a preparation method and preparation device of a porous medium composite phase-change material. The method and device can be used for packaging a low-temperature organic phase-change material by a porous propping material to obtain the high-airtightness composite phase-change material. The preparation method comprises the following steps: carrying out vacuum treatment on a porous propping material; preparing an organic precursor solution; preparing a packaging substance emulsion; compounding the packaging substance emulsion and porous propping material; and drying and curing to form the porous medium composite phase-change material. The preparation device comprises a phase-change substrate emulsification container, a liquid automatic sampler, a packaging composite container, a vacuum pump and a temperature controller. The porous medium composite phase-change material prepared by the preparation method has the advantages of firm packaging, low leakage tendency, convenient manufacturing process, simple technique, favorable economy and high applicability.

Description

technical field [0001] The invention belongs to the technical field of energy-saving and environment-friendly materials, and particularly provides a preparation method and a preparation device of a porous medium composite phase change material. Background technique [0002] Energy shortage is a global problem, and energy-saving energy storage is a research hotspot. Thermal energy storage methods include: sensible heat, latent heat and chemical reaction heat. It is a new energy-saving method to use the heat absorption and heat release of phase change materials during the phase change process to store energy. Phase change materials can be widely used in green buildings, industrial waste heat recovery, military, aviation and other fields. Organic phase change materials mainly include polyols, fatty acids and higher alkanes, which are less corrosive, have almost no problems of supercooling and phase separation during the phase change process, and have stable chemical properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 烟征曲艳新杨佳瑶付伟娟曹佰旭闻宇桐可欣杨天华
Owner SHENYANG AEROSPACE UNIVERSITY
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