Foam diamond reinforced paraffin phase change energy storage material and preparation method thereof

A phase-change energy storage material and diamond-enhanced technology, applied in metal material coating technology, heat exchange materials, chemical instruments and methods, etc., can solve the problem of increasing the weight and volume of the heat storage system and reducing the heat storage density of the heat storage system , Corrosion of metal materials and other problems, to achieve the effect of light weight and good mechanical bearing capacity, high heat capacity, high permeability

Inactive Publication Date: 2017-03-15
CENT SOUTH UNIV
View PDF8 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, regardless of organic or inorganic phase change energy storage, its large-scale application still faces problems: almost all phase change materials have low thermal conductivity and poor heat transfer performance during the phase change process
Although these methods can improve the thermal conductivity

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Foam diamond reinforced paraffin phase change composite:

[0055] In this example, copper foam with a pore size of 0.2 mm and a porosity of 50% is used as the substrate, and the diamond foam reinforcement accounts for 20% of the volume fraction of the composite material. First, the copper foam three-dimensional network substrate is cleaned according to step (1), and then Step (2) adopts magnetron sputtering technology to deposit the chromium film that thickness is 50nm on the foam copper three-dimensional network framework surface as the intermediate transition layer; Then according to step (3) obtain the middle of the mesh hole inlaid with a large amount of nano crystals and micro crystal diamond particles Foam skeleton substrate; step (4) adopts hot wire CVD to deposit diamond film, deposition process parameters: hot wire distance 6mm, substrate temperature 800°C, hot wire temperature 2200°C, deposition pressure 3KPa, CH 4 / H 2 The volume flow ratio is 1:99, and the ...

Embodiment 2

[0057] Foam diamond reinforced paraffin phase change composite:

[0058] In this example, copper foam with a pore size of 0.2 mm and a porosity of 50% is used as the substrate, and the diamond foam reinforcement accounts for 20% of the volume fraction of the composite material. First, the copper foam three-dimensional network substrate is cleaned according to step (1), and then Step (2) adopts magnetron sputtering technology to deposit the chromium film that thickness is 50nm on the foam copper three-dimensional network framework surface as the intermediate transition layer; Then according to step (3) obtain the middle of the mesh hole inlaid with a large amount of nano crystals and micro crystal diamond particles Foam skeleton substrate; step (4) adopts hot wire CVD to deposit diamond film, deposition process parameters: hot wire distance 6mm, substrate temperature 800°C, hot wire temperature 2200°C, deposition pressure 3KPa, CH 4 / H 2 The volume flow ratio is 1:99, and the ...

Embodiment 3

[0060] Copper foam reinforced paraffin phase change composite:

[0061] In this example, copper foam with a pore size of 0.2mm and a porosity of 50% is used as the reinforcement, and the copper foam reinforcement accounts for 20% of the volume fraction of the composite material. First, the copper foam is cleaned according to step (1); (2) the foam copper The copper is placed in the mold, and the copper foam is placed in parallel in the matrix as a sheet-like reinforcement for compounding; (6) Put the copper foam into the paraffin at 90°C according to the volume ratio of 1:5, and wait for the paraffin to penetrate and fully infiltrate the copper foam , to obtain a mixture, the above mixture was vacuum-treated at 100°C for 0.5h to remove the air bubbles in it, so that the paraffin wax could be better filled into the pores of the foamed copper, kept at 100°C for 1h, and finally cooled to room temperature to obtain Copper foam reinforced paraffin wax phase change energy storage ma...

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
Apertureaaaaaaaaaa
Thermal conductivityaaaaaaaaaa
Thermal conductivityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a foam diamond reinforced paraffin phase change energy storage material and a preparation method of the foam diamond reinforced paraffin phase change energy storage material. The phase change energy storage material comprises a surface reinforced foam framework, paraffin, a fire retardant and a paraffin support material; and a surface reinforcing layer of the foam framework is chosen from one of a diamond film, a graphene wall, a carbon nano tube wall, a graphene coated diamond film, a carbon nano tube coated diamond film, and a carbon nano tube/graphene coated diamond film. The phase change energy storage material is reasonable in structure, high in heat conductivity coefficient and stable in performance; and graphene or/and the carbon nano tube is/are modified on the surface, so that the heat conducting property of the foam framework is further improved, and the heat transfer efficiency of the existing energy storage material is effectively improved. The excellent chemical inertness of the diamond effectively avoids the corrosion of a metal framework in the phase change material, the prepared foam framework is not only suitable for the organic phase change energy storage material, is but also strongly compatible with and adaptive to the inorganic hydrous salt phase change material, and the phase change energy storage material is applied in the high-temperature high-power high-energy-consumption field.

Description

technical field [0001] The invention discloses a foamed diamond reinforced paraffin phase change energy storage material and a preparation method thereof, belonging to the technical field of energy storage materials. Background technique [0002] With the continuous development of the world economy, the problem of energy shortage is becoming more and more serious, and the storage, development and utilization of renewable energy have gradually become the focus of the world's attention. Energy storage can not only effectively reduce the total energy dissipation, improve the performance and reliability of the entire system, but also reduce unnecessary fuel waste, which is extremely critical to the sustainable development of the environment and energy. Among many energy storage methods, phase change materials have attracted widespread attention as a clean and efficient thermal energy storage material. Phase change materials use their constant phase transition temperature during ...

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
IPC IPC(8): C09K5/06C23C16/27C23C16/26C23C16/50C23C28/00
CPCC09K5/063C23C16/26C23C16/27C23C16/271C23C16/50C23C28/322C23C28/34
Inventor 魏秋平周科朝张龙马莉余志明刘家喻
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap