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

Phase change composite material and preparation method thereof

A technology of phase-change composite materials and core materials, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of cumbersome modification process, secondary pollution, long cycle, etc., and achieve simple modification process and short cycle , low cost effect

Inactive Publication Date: 2017-06-23
ZHEJIANG OCEAN UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only consumes a lot of energy, but also toxic solvents such as toluene are likely to remain in the pores to form secondary pollution. In addition, the modification process is cumbersome and the cycle is long

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
  • Phase change composite material and preparation method thereof
  • Phase change composite material and preparation method thereof
  • Phase change composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The present invention provides a kind of preparation method of phase change composite material, it comprises the following steps:

[0038] S1, providing mesoporous silica, wherein the mesoporous silica includes a plurality of channels;

[0039] S2, modifying the mesoporous silica with dopamine, so that dopamine is attached to the channel of the mesoporous silica; and

[0040] S3, immersing the dopamine-modified mesoporous silica in a polyethylene glycol solution, so that the polyethylene glycol is immobilized in the channel of the mesoporous silica as a core material to obtain a phase change composite material, wherein The polyethylene glycol forms a hydrogen bond with the amino group in the dopamine and the catechol functional group to realize the tight combination with the mesoporous silicon dioxide.

[0041] In step S1, the mesoporous silica can be self-made or purchased from the market. The channels of the mesoporous silica are used to load subsequent dopamine and...

Embodiment 1

[0069] (1) Preparation of mesoporous silica

[0070] Dissolve 544mg of tannic acid in 100mL of absolute ethanol at room temperature, add 50mL of concentrated ammonia water, stir rapidly for 1min, then add 0.6mL tetraethyl orthosilicate, stir rapidly at room temperature for 2h. After the reaction was completed, the suspension was centrifuged and washed with distilled water for several times to obtain mesoporous silica TAMS.

[0071] (2) Preparation of dopamine-modified mesoporous silica

[0072] Dissolve 0.045g of dopamine in 45mL of newly prepared pH 8.5 phosphate buffer solution, then quickly add 0.225g of mesoporous silica TAMS, stir at room temperature for 3h, centrifuge and dehydrate the suspension, wash with distilled water twice, and vacuum at 40°C After drying for 24 hours, dopamine-modified mesoporous silica Dop-TAMS was obtained.

[0073] (3) Preparation of phase change composite materials

[0074] Put 50mg of Dop-TAMS in a beaker, add 15mL of 8g / L PEG ethanol solu...

Embodiment 2

[0076] (1) Preparation of mesoporous silica

[0077] Dissolve 544mg of tannic acid in 100mL of absolute ethanol at room temperature, add 50mL of concentrated ammonia water, stir rapidly for 1min, then add 0.6mL tetraethyl orthosilicate, stir rapidly at room temperature for 2h. After the reaction was completed, the suspension was centrifuged and washed with distilled water for several times to obtain mesoporous silica TAMS.

[0078] (2) Preparation of dopamine-modified mesoporous silica

[0079] Dissolve 0.045g of dopamine in 45mL of newly prepared pH 8.5 phosphate buffer solution, then quickly add 0.225g of mesoporous silica TAMS, stir at room temperature for 3h, centrifuge and dehydrate the suspension, wash with distilled water twice, and vacuum at 40°C After drying for 24 hours, dopamine-modified mesoporous silica Dop-TAMS was obtained.

[0080] (3) Preparation of phase change composite materials

[0081] Put 50mg of Dop-TAMS in a beaker, add 15mL 8g / L PEG ethanol solutio...

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
Melting enthalpyaaaaaaaaaa
Melting enthalpyaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a phase change composite material. The preparation method comprises the following steps: (1) providing mesoporous silicon dioxide, wherein the mesoporous silicon dioxide comprises multiple channels; (2) performing modification on the mesoporous silicon dioxide by using dopamine to enable the dopamine to be attached in the channels of the mesoporous silicon dioxide; (3) dipping the mesoporous silicon dioxide modified by the dopamine in a polyethylene glycol solution, enabling polyethylene glycol to be supported in the channels of the mesoporous silicon dioxide to serve as a core material, so as to obtain the phase change composite material, wherein the polyethylene glycol, an amino group and a catechol functional group in the dopamine form hydrogen bonds to realize close bonding with the mesoporous silicon dioxide. The invention further relates to the phase change composite material.

Description

technical field [0001] The invention relates to a phase change composite material and a preparation method thereof. Background technique [0002] Phase change materials (PCMs) are currently one of the most promising energy storage carriers due to their advantages such as high energy storage density, stable output temperature and heat, and a wide range of phase transition temperatures. Phase change materials are widely used in building energy saving, solar thermal systems, industrial waste heat utilization, heat dissipation of electronic devices, air conditioning systems and phase change temperature control daily necessities and other fields. [0003] Polyethylene glycol (PEG) is more suitable for building energy storage materials because of its high phase transition enthalpy, adjustable phase transition temperature, non-toxicity, corrosion resistance and biodegradability, and is currently the most promising phase transition one of the materials. [0004] However, PEG phase...

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): C09K5/06
CPCC09K5/063
Inventor 陈妍高军凯张雄杰杜金涛雷浩李磊
Owner ZHEJIANG OCEAN 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