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

Composite phase change energy storage material containing ionic liquid and preparation method thereof

A technology of phase-change energy storage materials and ionic liquids, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of not being directly used as phase-change materials, and achieve large-scale popularization and application, low vapor pressure, and overcoming The effect of low thermal stability

Inactive Publication Date: 2016-07-13
MAANSHAN NBWAVE HEAT ENERGY SCI
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Chinese invention patent CN101519581A discloses a phase change energy storage material and its preparation method: react polyethylene glycol prepolymer and cellulose ionic liquid solution at 60-80°C for 4-8 hours to obtain the required phase change energy storage material. Energy materials, wherein the ionic liquid used is imidazolium ionic liquid as a reaction intermediate, but the ionic liquid is used as a reaction intermediate, not directly as a phase change material, and the anion contained in the imidazolium ionic liquid is an organic functional group

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
  • Composite phase change energy storage material containing ionic liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] b. Preparation of propylamine formate ionic liquid: Slowly add formic acid in an equimolar amount to propylamine to an aqueous solution of propylamine under vigorous stirring, react at room temperature for 4 hours, distill water under reduced pressure at 85°C, and dry in vacuum under reduced pressure for 24 hours.

[0032] Store the 1-methylimidazolium dihydrogen phosphate and alanine formate ionic liquid prepared above for future use.

Embodiment 1

[0034] Weigh 22.5g of 1-methylimidazolium dihydrogen phosphate ionic liquid, 22.5g of propylamine formate ionic liquid and 5g of diethanol monoisopropanolamine surfactant in a beaker, and place them in a water bath at 80°C After stirring evenly, add 8.33g of expanded graphite and continue to stir for 1h, then place it in a vacuum drying oven at 60°C for 4h, cool to room temperature after adsorption, and obtain ionic liquid / nonionic surfactant / expanded graphite for air energy water heater Composite shape-setting phase-change materials.

Embodiment 2

[0036] Weigh 47.5g of propylamine formate ionic liquid and 2.5g of fatty alcohol polyoxyethylene ether silane WA surfactant in a beaker, stir evenly in a water bath at 70°C, add 5g of expanded graphite and continue stirring for 2h , and then placed in a vacuum oven at 60°C for immersion for 6 hours, and cooled to room temperature after adsorption to obtain an ionic liquid / nonionic surfactant / expanded graphite composite phase change material for air energy water heaters.

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 pointaaaaaaaaaa
phase transition temperatureaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite phase change energy storage material containing ionic liquid and a preparation method thereof and belongs to the technical field of phase change energy storage materials.The composite phase change material is formed by compounding a phase change energy storage material and a supporting material.The phase change energy storage material is formed by mixing one or two of 1-methyl imidazole dihydric phosphate and the propylamine formate ionic liquid and one or two of formate diethanolisopropanolamine, twain-80, polyethylene glycol 400 and fatty alcohol-polyoxyethylene ether WA, wherein the mass ratio of the ionic liquid is 90-95%.The supporting material is expanded graphite.The mass ratio of the phase change energy storage material to the expanded graphite is (6-10):1, and the phase change energy storage material is evenly adsorbed in holes of the expanded graphite.According to the composite phase change energy storage material containing the ionic liquid, the phase change temperature is about 46+ / -2.0 DEG C, the phase change latent heat is large (150-180 KJ / Kg), the volume slightly expands, the preparation method is simple, cost is low, no volatility exists, emissions of waste water, waste gas and waste residues are avoided, and large-scale application and popularization are promoted.

Description

technical field [0001] The invention belongs to the technical field of phase change energy storage materials, in particular to a composite phase change energy storage material containing ionic liquid and a preparation method thereof, which can be used as a phase change energy storage material for air energy water heaters. Background technique [0002] Air energy water heaters, also known as "air source heat pump water heaters", transfer heat from the air to water through refrigerants. Traditional electric water heaters and gas water heaters obtain heat energy by consuming electricity and gas, while air-energy water heaters heat water by absorbing heat in the air, which can absorb about three times the amount of electric energy when consuming the same amount of electric energy. thermal energy to heat water. However, since the current air energy water heater uses water as the energy storage medium, it is bulky and difficult to enter thousands of households. Therefore, to solv...

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 Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 冒爱琴汪吉平葛飞俞海云林娜郑翠红闫勇丁赔赔
Owner MAANSHAN NBWAVE HEAT ENERGY 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