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

A kind of braidable multi-walled carbon nanotube modified composite phase change material and preparation method thereof

A technology of multi-walled carbon nanotubes and composite phase change materials, applied in heat exchange materials, chemical instruments and methods, wet spinning, etc., can solve the problems of low heat storage density, low thermal conductivity and large volume change, etc. Achieve high thermal conductivity, high tensile strength, and improve heat transfer efficiency

Active Publication Date: 2020-07-10
KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has some significant disadvantages, such as low heat storage density, large volume change during solid-liquid phase transition, so it has a certain tendency to separate from the wall of the base material when it solidifies, easy to leak in liquid state, low density and low thermal conductivity, etc.

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 braidable multi-walled carbon nanotube modified composite phase change material and preparation method thereof
  • A kind of braidable multi-walled carbon nanotube modified composite phase change material and preparation method thereof
  • A kind of braidable multi-walled carbon nanotube modified composite phase change material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: A kind of woven multi-wall carbon nanotube modified composite phase change material, comprising multi-wall carbon nanotube modified polypropylene hollow fiber membrane, the inner wall of the multi-wall carbon nanotube modified polypropylene hollow fiber membrane Adsorbed full of paraffin, the membrane cavity is filled with a mixture of paraffin and heat-conducting materials;

[0033] The membrane outer diameter of the multi-walled carbon nanotube modified polypropylene hollow fiber membrane is 1mm, and the porosity is 50%;

[0034] The polypropylene is a homopolypropylene; or a branched high melt strength homopolypropylene with a melt index of 0.5g / 10min;

[0035] The length of the multi-walled carbon nanotubes is 3 μm;

[0036] The heat-conducting material is copper powder whose particle size is below the micron scale;

[0037] The paraffin is solid at room temperature and has 17 carbon atoms;

[0038] The mass ratio of the heat conduction material in th...

Embodiment 2

[0039] Embodiment 2: A kind of braidable multi-wall carbon nanotube modified composite phase change material, including multi-wall carbon nanotube modified polypropylene hollow fiber membrane, the inner wall of the multi-wall carbon nanotube modified polypropylene hollow fiber membrane Adsorbed full of paraffin, the membrane cavity is filled with a mixture of paraffin and heat-conducting materials;

[0040] The membrane outer diameter of the multi-wall carbon nanotube modified polypropylene hollow fiber membrane is 2mm, and the porosity is 65%;

[0041] Described polypropylene is homopolypropylene; Or contains branched high melt strength homopolypropylene, and its melt index is 2g / 10min;

[0042] The length of the multi-walled carbon nanotubes is 11 μm;

[0043] The heat-conducting material is a carbon nanotube with a particle size below the micron scale;

[0044] The paraffin is solid at room temperature and has 26 carbon atoms;

[0045] The mass ratio of the heat-conducti...

Embodiment 3

[0046] Embodiment 3: A kind of braidable multi-wall carbon nanotube modified composite phase change material, comprising multi-wall carbon nanotube modified polypropylene hollow fiber membrane, described multi-wall carbon nanotube modified polypropylene hollow fiber membrane wall Adsorbed full of paraffin, the membrane cavity is filled with a mixture of paraffin and heat-conducting materials;

[0047] The membrane outer diameter of the multi-walled carbon nanotube modified polypropylene hollow fiber membrane is 3mm, and the porosity is 80%;

[0048] Described polypropylene is homopolypropylene; Or contains branched high melt strength homopolypropylene, and its melt index is 4g / 10min;

[0049] The length of the multi-walled carbon nanotubes is 20 μm;

[0050] The heat-conducting material is a mixture of carbon nanotubes, graphene, expanded graphite and copper powder with a particle size below the micron level in a mass ratio of 1:1:1:1;

[0051] Described paraffin is solid at...

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
melt flow indexaaaaaaaaaa
lengthaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a knittable multi-wall carbon nanometer modified composite phase change material and a preparation method thereof. The knittable multi-wall carbon nanometer modified compositephase change material comprises a multi-wall carbon nanometer modified polypropylene hollow fiber membrane, wherein paraffin is fully adsorbed inside the multi-wall carbon nanometer modified polypropylene hollow fiber membrane; a mixture of paraffin and a heat conduction material is filled in a membrane inner cavity. The material has the advantages that the structure is reasonable; the energy storage density is great; the encapsulation quantity is great; the heat conduction coefficient is high; the performance is stable; the production and the preparation are simple; the implementation is easy; the cost is low.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a woven multi-walled carbon nanotube modified composite phase change material and a preparation method thereof. Background technique [0002] With the increasing pressure on energy consumption, the research and development of clean energy such as solar energy, wind energy, and tidal energy shows that people are making great efforts to find alternative energy sources. At the same time, thermal energy, as one of the important ways of energy supply, also occupies a pivotal position in our life. The advocacy of energy conservation and emission reduction directly highlights the huge demand for the development of new and efficient energy storage technologies. At present, thermal energy storage methods mainly include sensible heat storage, chemical reaction heat storage and latent heat storage (phase change energy storage). Among them, phase change energy storage is carried o...

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): D01F6/46D01F1/08D01F1/10D06M11/74D06M11/83D06M13/02C09K5/06D01D5/24D01D5/06D01D10/02D02J13/00
CPCC09K5/063D01D5/06D01D5/24D01D10/02D01F1/08D01F1/10D01F6/46D02J13/001D06M11/74D06M11/83D06M13/02
Inventor 王华
Owner KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
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