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

A core-shell structure al@ti-al 2 o 3 Phase change heat storage composite material and preparation method thereof

A core-shell structure, phase change heat storage technology, applied in the direction of heat exchange materials, chemical instruments and methods, metal processing equipment, etc., can solve the problem of large voids in the ceramic substrate, poor phase change heat storage cycle stability, and loss of phase change materials And other issues

Inactive Publication Date: 2020-07-14
NORTHWESTERN POLYTECHNICAL UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The liquid phase Al produced during the phase change process has strong chemical reactivity, and is easily oxidized to form compounds, and the ceramic matrix has many voids, and the molten aluminum has strong fluidity, which is easy to cause the loss of phase change materials, and finally leads to phase change. Poor cycle stability of thermal storage, necessitating encapsulation of phase change materials

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 core-shell structure al@ti-al <sub>2</sub> o <sub>3</sub> Phase change heat storage composite material and preparation method thereof
  • A core-shell structure al@ti-al <sub>2</sub> o <sub>3</sub> Phase change heat storage composite material and preparation method thereof
  • A core-shell structure al@ti-al <sub>2</sub> o <sub>3</sub> Phase change heat storage composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0032] (1) Preparation of core-shell structure Al@Ti microsphere powder

[0033] Take 15g of titanium powder with a particle diameter of 325 mesh, and then take 5g of aluminum powder with a particle diameter of 50 mesh, and put them into a ball mill pot with 500g of stainless steel balls to evacuate (make the pressure drop below 0.1Pa), and put them in a planetary ball mill at 300r The rotation speed of / min is mixed in forward and reverse directions, rotate for 10 minutes and stop for 5 minutes, and the total time of ball milling is 20 hours, and mechanical alloying is carried out to obtain Al@Ti microsphere powder with core-shell structure.

[0034] (2)Al@Ti-Al 2 o 3 Preparation of Phase Change Thermal Storage Composite Materials

[0035] Take 5 g of the core-shell structure Al@Ti microsphere powder prepared above and 40 g of Al 2 o 3 Proportioning of ceramic powder, put 500g stainless steel balls into the ball mill pot to evacuate (to reduce the pressure below 0.1Pa), and...

Embodiment example 2

[0037] (1) Preparation of core-shell structure Al@Ti microsphere powder

[0038] Take 15g of titanium powder with a diameter of 325 mesh, and then take 5g of aluminum powder with a diameter of 50 mesh, and put it into a ball mill pot with 500g of stainless steel balls to evacuate (make the pressure drop below 0.1Pa), and put it in a planetary ball mill at 300r / min Forward and reverse rotation of the mixing speed, rotate for 10 minutes and stop for 5 minutes, and the total time of ball milling is 20 hours to obtain the core-shell structure Al@Ti microsphere powder.

[0039] (2)Al@Ti-Al 2 o 3 Preparation of Phase Change Thermal Storage Composite Materials

[0040] Weigh 5 g of the above-prepared core-shell structure Al@Ti microsphere powder and 45 g of Al 2 o 3 Proportioning of ceramic powder, put 500g stainless steel balls into the ball mill tank to evacuate (to reduce the pressure to below 0.1Pa), and mix in the planetary ball mill at a speed of 145r / min in one direction, ...

Embodiment example 3

[0042] (1) Preparation of core-shell structure Al@Ti microsphere powder

[0043] Take 15g of titanium powder with a diameter of 325 mesh, and then take 6g of aluminum powder with a diameter of 50 mesh, and put it into a ball mill pot with 500g of stainless steel balls to evacuate (make the pressure drop below 0.1Pa), and put it in a planetary ball mill at 300r / min Forward and reverse rotation of the mixing speed, rotate for 10 minutes and stop for 5 minutes, and the total time of ball milling is 20 hours to obtain the core-shell structure Al@Ti microsphere powder.

[0044] (2)Al@Ti-Al 2 o 3 Preparation of Phase Change Thermal Storage Composite Materials

[0045] Weigh 5 g of the core-shell structure Al@Ti microsphere powder and 40 g of Al 2 o 3 Proportioning of ceramic powder, put 500g stainless steel balls into the ball mill tank to evacuate (to reduce the pressure to below 0.1Pa), and mix in the planetary ball mill at a speed of 145r / min in one direction, and the total t...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a core-shell structure Al@Ti-Al2O3 phase change thermal storage composite material and a preparation method thereof. First, a core-shell structure Al@Ti microsphere powder is prepared by a mechanical alloying method, and the Al / Ti ratio is adjusted during the preparation process. Comparing with ball milling parameters to obtain structure-designable core-shell structure Al@Ti microsphere powder. Then, the core-shell structure Al@Ti‑Al2O3 phase change heat storage composite material was prepared by hot pressing and sintering. During the sintering process, the ratio of Al@Ti microsphere powder and Al2O3 ceramic powder, sintering temperature, holding time, and molding pressure were adjusted. To obtain Al@Ti‑Al2O3 composites with designable heat storage performance. The phase change heat storage composite material prepared by this method can increase the heat transfer area, reduce the reaction between the phase change material and the external environment, reduce the corrosion of the container, and reduce the volume change of the phase change material and the material of the phase change process. Loss and changes in phase transition properties.

Description

technical field [0001] The invention belongs to a phase change composite material and a preparation method thereof, and relates to a core-shell structure Al@Ti-Al 2 o 3 Phase change thermal storage composite material and preparation method thereof. More specifically, it relates to a kind of core-shell structure Al@Ti microsphere powder prepared by mechanical alloying, and then combined with Al 2 o 3 A preparation method for ceramic powder hot-pressing sintering and solidification to finally obtain the designed high-temperature phase-change thermal storage composite material with a core-shell structure. Background technique [0002] Latent heat storage materials are also called phase change heat storage materials, which use materials to absorb or release heat from the environment when they change phases, so as to achieve the purpose of storing and releasing heat energy. [0003] Low-temperature phase-change materials (<120°C) and medium-temperature phase-change materia...

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): C22C1/05C22C29/12B22F1/02B22F9/04C09K5/06
CPCC09K5/063C22C1/05C22C29/12B22F9/04B22F2009/041B22F1/17
Inventor 李付国王文婧闫笑健沈琛强贾若琳袁颖菁白志伟
Owner NORTHWESTERN POLYTECHNICAL UNIV
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