Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of foam carbon/paraffin phase change composite material and its encapsulation method

A technology of phase-change composite material and carbon foam, which is applied in the field of phase-change energy storage to achieve the effects of controlling thermal expansion, reducing thermal stress and improving heat transfer performance

Active Publication Date: 2018-05-18
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of foamed carbon / paraffin phase change composite material and its packaging method, thereby solving the aforementioned problems existing in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of foam carbon/paraffin phase change composite material and its encapsulation method
  • A kind of foam carbon/paraffin phase change composite material and its encapsulation method
  • A kind of foam carbon/paraffin phase change composite material and its encapsulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Reference figure 1 The foamed carbon / paraffin phase change composite material of this embodiment includes: foamed carbon 1 and paraffin 1 filled in the pores of the foamed carbon 1, and the mass of the foamed carbon 1 is 67g, The mass of the paraffin wax 1 is 95 g; the mass fraction of n-octadecane in the paraffin wax is greater than 98%.

[0028] The physical and chemical parameters of the foamed carbon 1 are: density 0.43g·cm -3 , Porosity 81%, thermal conductivity 133W·m -1 ·K -1 The physical and chemical parameters of the paraffin 1 n-octadecane are: melting point 28.3°C, latent heat 245kJ / kg, thermal conductivity 0.15W·m -1 ·K -1 , Density 814 S g·cm -3 , 775 L g·cm -3 .

[0029] The filling rate of the paraffin wax 1 in the pores of the foamed carbon 1 is 97.3%. It can effectively control the thermal expansion phenomenon after packaging and reduce the thermal stress of the container.

[0030] The method of encapsulating the foamed carbon / paraffin phase change composit...

Embodiment 2

[0038] Embodiment 2. The difference between this embodiment and embodiment 1 is that the mass fraction of n-eicosane in the paraffin wax is greater than 98%; the mass of paraffin wax 2 is 99 g, and the mass of foam carbon 2 is 57 g. The physical and chemical parameters of foamed carbon 2 are: density 0.37g·cm -3 , Porosity 84%, thermal conductivity 110W·m -1 ·K -1 The physical and chemical parameters of the paraffin 1 n-eicosane are: melting point 37°C, latent heat 247kJ / kg, thermal conductivity 0.15W·m -1 ·K -1 , Density 856 S -778 L g.cm -3 , Others are the same as in Example 1. The scanning electron micrograph of the foamed carbon used in this embodiment, such as figure 2 Shown; the scanning electron micrograph of the foamed carbon / paraffin phase change composite material in this embodiment, such as image 3 Shown.

[0039] As those skilled in the art know: high thermal conductivity foamed carbon material is a new type of material that can maintain its own structure and shap...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
melting pointaaaaaaaaaa
latent heataaaaaaaaaa
Login to View More

Abstract

The invention discloses a foamed carbon / paraffin phase-change composite material and a packaging method thereof, and relates to the technical field of phase-change energy storage. The phase change composite material comprises: foamed carbon and paraffin wax filled in pores of the foamed carbon, the weight ratio of the foamed carbon to the paraffin wax is 1:1.2 to 1:3.1; the mass of hydrocarbons in the paraffin wax The fraction is greater than 98%, and the hydrocarbon is solid at normal temperature. The encapsulation method includes: 1. cleaning the container, the cover plate and the carbon foam, 2. filling the carbon foam, 3. welding the cover plate, 4. filling the liquid paraffin, 5. sealing the filling port, and finishing. The phase change heat storage composite material of the present invention has high thermal conductivity and good heat transfer performance, and can realize the control of the distribution of hole positions; the filling port is sealed and welded by vacuum electron beams to ensure the absolute sealing of the paraffin phase change material in the container cavity .

Description

Technical field [0001] The invention relates to the technical field of phase change energy storage, in particular to a foamed carbon / paraffin phase change composite material and an encapsulation method thereof. Background technique [0002] The phase change material is accompanied by a large amount of phase change latent heat in the phase change process, which can absorb or release a large amount of energy and the phase change process is approximately isothermal. This feature can realize the temperature control of the object through the phase change heat storage. There are broad application prospects in aerospace, solar energy utilization, and thermal energy recovery. At present, researching and finding phase change materials with high heat storage density and good performance is the key to phase change heat storage technology. As an organic phase change material, paraffin wax has the advantages of large latent heat of phase change, wide melting point range, stable chemical prop...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B23K15/06
Inventor 盛强张靖驰任维佳童铁峰
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com