Method for preparing phase-change membrane with aerogel

An airgel and phase change technology, applied in the field of nanomaterials, can solve the problems of liquid phase leakage and limited application, and achieve the effects of excellent product quality, high enthalpy and thermal conductivity, and simple process

Inactive Publication Date: 2019-12-10
苏州热象纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, the liquid phase will cause leakage problems, which limits its application.

Method used

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.

[0017] A preparation method of an aerogel-containing phase change film, comprising the following steps:

[0018] S1. Add 0-50wt% surfactant to 10-90wt% water, add 0-40wt% hydrophobic silica airgel, and disperse with a disperser to obtain an aqueous solution of the airgel.

[0019] In the step S1, the hydrated silica aerogel with a pore size of 1 μm-100 μm is selected.

[0020] In the step S1, the rotating speed of the disperser is 500-5000r / min, and the dispersing time is 0.1-5h.

[0021] S2. Add water-based resin and heat-conducting material to the aqueous solution of the airgel, the mass ratio of the airgel aqueous solution, water-based resin, and heat-conducting material=1:0.1-3:0.1-5, stir at 200-800r / min for 0.1 -4h, and then vacuum...

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PUM

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Abstract

The invention provides a method for preparing a phase-change membrane with aerogel. According to the method, a polymer membrane (PET (polyethylene terephthalate), PP (polypropylene) and PE (polyethylene)) of 10-500[mu] m is adopted as a substrate, a composite phase-change coating (0.1-3mm) consisting of aerogel, a phase-change material, a heat conduction material and a resin is used, and the massratios of different parts are as follows: the aerogel (5-50wt%), the phase-change material (10-90wt%), the heat conduction material (1-20wt%) and the resin (1-20wt%). The method is simple in process and applicable to on-scale production, and the phase-change membrane prepared by using the method has a high enthalpy value and a high heat conduction coefficient, and is excellent in product quality.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a preparation method of an aerogel-containing phase change film. Background technique [0002] Silica airgel is composed of 1-100nm particles, forming a porous nanomaterial. The material has up to 400-1500m 2 / g specific surface area and high porosity of 89-99.8%, therefore, silica airgel has low thermal conductivity, ultra-low density, and low dielectric constant. The material is widely used in thermal insulation, circuit electronics, catalytic filtration and other industries. [0003] Liquid-solid phase change materials have the advantages of wide phase transition temperature, stable chemical properties, high latent heat, and low cost. However, in actual use, the leakage problem caused by the liquid phase limits its application. At present, researchers use airgel, graphene, carbon nanotubes and other porous materials combined with phase change materials to solve the leakage pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/06
Inventor 候远
Owner 苏州热象纳米科技有限公司
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