CN104128138A - Microcapsule energy storage composition and preparation method thereof - Google Patents
Microcapsule energy storage composition and preparation method thereof Download PDFInfo
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- CN104128138A CN104128138A CN201410401132.5A CN201410401132A CN104128138A CN 104128138 A CN104128138 A CN 104128138A CN 201410401132 A CN201410401132 A CN 201410401132A CN 104128138 A CN104128138 A CN 104128138A
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- energy storage
- storage composition
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Abstract
The invention relates to a microcapsule energy storage composition and a preparation method thereof. The microcapsule energy storage composition adopts an energy storage material as a core material and adopts chemically-modified polymethyl methacrylate as a wall material to carry out microcapsule encapsulation in an in-situ polymerization method. The microcapsule energy storage composition is high in heat stability and uniform in particle size, and the chemically-modified wall material is high in heat resistance, flexibility and strength. The preparation method is simple and easy, the product is energy-saving and environment-friendly, and the industrialized production is easy to realize.
Description
Technical field
The present invention relates to a kind of microcapsules energy storage composition and method of making the same, belong to technical field of composite materials.
Background technology
Recently, utilize the energy storage composition of microcapsules technology formation nucleocapsid structure more and more for the production of the every field of living.For example, in building and ornament materials, add this energy storage composition, can energy-conserving and environment-protective, be the use increment of building.Therefore, microcapsules energy storage composition becomes the research and development focus in low-carbon (LC) building energy conservation and environmental science.
Conventionally, the core of microcapsules energy storage composition is the material with energy-storage function, consider its service life and application, should guarantee that it is impermeable at certain temperature range, not reveal, do not overflow, this just requires the wall material of microcapsules energy storage composition not only to want environmental protection, has higher mechanical strength and good toughness, also will have good heat resistance.At this point, this technology has been carried out to large quantity research both at home and abroad.
CN101574637A is used formaldehyde, melamine and urea to do wall material, certainly exists the harmful substances such as formaldehyde that are difficult to remove in the material making thus, for environmental protection and health, brings very large harm.Meanwhile, melamine resin pliability is poor, and hardness is large, and not flexible, sealing is poor.
It is polymer wall material that CN101670256A and CN1695789A be take respectively vinyl monomer, acrylics monomer and ethene, polyoxyethylene, and still, in the time of in being applied to hot environment, performance and the mechanical strength of this material are not ideal enough.
In addition, it is wall material that BASF AG (BASF) adopts polymethyl methacrylate (PMMA), development varies with temperature and changes form and the microcapsules of heat storage function can be provided, this microcapsules can be added in the powder of manufacturing plasterboard, or add in other construction materials such as cement and plaster and use.Yet PMMA is as typical unformed macromolecular material, poor toughness, impact strength is low, and heat resistance is not high, uses and popularization is hindered.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind of microcapsules energy storage composition, can meet the application requirements in higher temperature field, as melting field of textiles.
Technical scheme of the present invention is as follows:
A microcapsules energy storage composition, its constituent by weight, comprises 100 parts of core energy storage materials, emulsifying agent 0.5-2 part, nano modifier 0.1-0.5 part and wall material polymethyl methacrylate 30-75 part.
Microcapsules energy storage composition of the present invention, described core energy storage material is a kind of in paraffin, fatty alcohol or aliphatic acid.Emulsifying agent is a kind of or its mixture in lauryl sodium sulfate (SDS) and emulsifier op-10.Described nano modifier is nanometer SiO
2, nanometer CaCO
3or nanometer Al
2o
3in a kind of.
A preparation method for microcapsules energy storage composition, its preparation method is as follows:
A) take nano modifier, ethyl acetate solution, evenly mix and ultrasonic dispersion, then add Silane coupling reagent KH-570, be warming up to 60-80 ℃, reaction 2-6h, then by reactant centrifugation, obtains surface-treated nano modifier.
B) above-mentioned surface-treated nano modifier is dissolved in the solution of ethyl acetate and methyl methacrylate, adds initator, ultrasonic dispersion, is warming up to 60-80 ℃, and reaction 2-6h, obtains wall material performed polymer.
C) weighing core materials energy storage material, emulsifying agent and deionized water, used homogenizer that its emulsification is obtained to emulsion.
D) in above-mentioned emulsion, add step b) wall material performed polymer, the initator prepared, be warming up to 60-80 ℃, reaction 2-6h.
E), after having reacted, with deionized water washing, dry, obtain microcapsules energy storage composition of the present invention.
The granularity of described nano modifier is 10-100nm, preferably 30-40nm.
Described emulsifying agent is a kind of in SDS, emulsifier op-10, or both mixtures.
Described initator is a kind of in azodiisobutyronitrile (AIBN), benzoyl peroxide (BPO) and potassium peroxydisulfate (KPS).
Microcapsules energy storage composition of the present invention is due to the polymer wall material that contains nano modification, so the toughness of wall material, intensity and heat resistance significantly improve.Use the polymer of this nano modification will to be conducive to improve service life and the performance of microcapsules energy storage composition as wall material.
The particle size of microcapsules energy storage composition of the present invention is even, generally at 3-5 micron, not only can be for building field, and meet the requirement of spinning fibre.
Microcapsules energy storage composition material of the present invention is easy to get, without free formaldehyde, environmental protection, and simple, the easy to operate energy-conserving and environment-protective of preparation technology.
The specific embodiment
Embodiment 1
By 2g100nmSiO
2in there-necked flask, be dissolved in the ethyl acetate of 250ml, ultrasonic dispersion approximately 1 hour, adds 3gKH-570, is warming up to 60 ℃, reaction 6h; By reactant centrifugation, rotating speed is 8000rpm/min afterwards, obtains surface-treated nanometer SiO
2.
By the nanometer SiO after above-mentioned surface treatment
2be dissolved in the solution of 50ml ethyl acetate and 0.15gAIBN, 15mlMMA, ultrasonic dispersion 1 hour, is warming up to 70 ℃, and reaction 3h, obtains wall material performed polymer.
Get 20g paraffin and join in there-necked flask together with 300ml deionized water with 0.4g emulsifier op-10, be warming up to 70 ℃, mechanical agitation 2h, on high-speed emulsifying machine under the rotating speed of 8000rpm/min emulsification 10min.
Then add 6g wall material performed polymer, 0.05gKPS and 100ml deionized water, keep 70 ℃, reaction 2.5h.After having reacted, with deionized water washing, dry, obtain microcapsules energy storage composition of the present invention.
The average grain diameter of resulting energy storage composition is 3 μ m, and the breakage rate of micro-capsule is 0.8%, and it undergoes phase transition at 33 ℃, and enthalpy is 125KJ/Kg, and heat resisting temperature is up to 210 ℃.
Embodiment 2
Get 5g40nmCaCO
3, 250ml ethyl acetate, 5gKH-570, by method surface-modified nano CaCO described in embodiment 1
3.
Get the nanometer CaCO after above-mentioned modification
3, 50ml ethyl acetate, 0.2gBPO and 15mlMMA, be warming up to 80 ℃, reaction 3h, prepares wall material performed polymer.
Get 20g lauryl alcohol and 0.4gSDS and carry out emulsification by method described in embodiment 1.
Get above-mentioned emulsion and 10g wall material performed polymer, 0.05gKPS and 160ml deionized water, according to the method for embodiment 1, obtain microcapsules energy storage composition of the present invention.
The average grain diameter of resulting energy storage composition is 5 μ m, and the breakage rate of micro-capsule is 1%, and it undergoes phase transition at 24 ℃, and enthalpy is 136J/g, and heat resisting temperature is up to 178 ℃.
Embodiment 3
Get 1g10nmAl
2o
3, 250ml ethyl acetate, 1gKH-570, by method surface-modified nano Al described in embodiment 1
2o
3.
Get the nanometer Al after above-mentioned surface modification
2o
3, 50ml ethyl acetate, 0.15gKPS and 15mlMMA, be warming up to 80 ℃, reaction 3h, prepares wall material performed polymer.
Get 20g capric acid and 0.1gSDS, 0.2g emulsifier op-10, by method described in embodiment 1, carry out emulsification.
Get above-mentioned emulsion and 15g wall material performed polymer, 0.05gKPS and 200ml deionized water, according to the method for embodiment 1, obtain microcapsules energy storage composition of the present invention.
The average grain diameter of resulting energy storage composition is 4 μ m, and the breakage rate of micro-capsule is 0.8%, and it undergoes phase transition at 30 ℃, and enthalpy is 145J/g, and heat resisting temperature is up to 126 ℃.
Claims (7)
1. a microcapsules energy storage composition, is characterized in that, its constituent by weight, comprises 100 parts of core energy storage materials, emulsifying agent 0.5-2 part, nano modifier 0.1-0.5 part and wall material polymethyl methacrylate 30-75 part.
2. microcapsules energy storage composition according to claim 1, is characterized in that, described core energy storage material is a kind of in paraffin, fatty alcohol or aliphatic acid.
3. microcapsules energy storage composition according to claim 1, is characterized in that, described emulsifying agent is a kind of or its mixture in lauryl sodium sulfate and emulsifier op-10.
4. microcapsules energy storage composition according to claim 1, is characterized in that, described nano modifier is nanometer SiO
2, nanometer CaCO
3or nanometer Al
2o
3in a kind of.
5. microcapsules energy storage composition according to claim 1, is characterized in that, the granularity of described nano modifier is 10-100nm.
6. the preparation method of microcapsules energy storage composition claimed in claim 1, is characterized in that, preparation process is as follows:
A) take nano modifier, ethyl acetate solution, evenly mix and ultrasonic dispersion, then add Silane coupling reagent KH-570, be warming up to 60-80 ℃, reaction 2-6h, then by reactant centrifugation, obtains surface-treated nano modifier;
B) above-mentioned surface-treated nano modifier is dissolved in the solution of ethyl acetate and methyl methacrylate, adds initator, ultrasonic dispersion, is warming up to 60-80 ℃, and reaction 2-6h, obtains wall material performed polymer;
C) weighing core materials energy storage material, emulsifying agent and deionized water, used homogenizer that its emulsification is obtained to emulsion;
D) in above-mentioned emulsion, add step b) wall material performed polymer, the initator prepared, be warming up to 60-80 ℃, reaction 2-6h;
E) after having reacted, with deionized water washing, dry, obtain microcapsules energy storage composition of the present invention.
7. preparation method according to claim 6, is characterized in that, described initator is a kind of in azodiisobutyronitrile, benzoyl peroxide or potassium peroxydisulfate.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562258A (en) * | 2015-01-22 | 2015-04-29 | 罗莱家纺股份有限公司 | Microcapsule phase change temperature adjusting fibers and preparation method of fabric thereof |
| CN104650816A (en) * | 2015-02-06 | 2015-05-27 | 桂林电子科技大学 | Low-temperature phase-change energy storage microcapsule and preparation method thereof |
| CN104802478A (en) * | 2015-04-23 | 2015-07-29 | 北京宇田相变储能科技有限公司 | Intelligent thermal-storage and temperature-adjustment composite fabric |
| CN106367031A (en) * | 2015-07-20 | 2017-02-01 | 天津城建大学 | High thermal conductivity composite phase change microcapsule and preparation method thereof |
| CN106978145A (en) * | 2017-04-06 | 2017-07-25 | 上海电力学院 | The microcapsule phase-change particle and preparation method of composite Nano aluminium and CNT |
| CN107567938A (en) * | 2017-09-27 | 2018-01-12 | 运城学院 | A kind of propagation method of compound leaf grape |
| CN108048039A (en) * | 2017-12-26 | 2018-05-18 | 桂林电子科技大学 | A kind of nano zinc oxide modified microcapsules composite phase-change material and preparation method thereof |
| CN108794673A (en) * | 2018-07-02 | 2018-11-13 | 清华大学 | A kind of phase-change material micro-capsule and preparation method thereof |
| CN108841361A (en) * | 2018-05-15 | 2018-11-20 | 王雪峰 | A kind of preparation method of rancid object sizing heat-storing material |
| CN110565373A (en) * | 2019-10-21 | 2019-12-13 | 罗莱生活科技股份有限公司 | Temperature-adjusting textile and production method thereof |
| CN113774693A (en) * | 2021-08-10 | 2021-12-10 | 江南大学 | Preparation method of wide-waveband solar energy absorption azobenzene optical energy storage material |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104562258A (en) * | 2015-01-22 | 2015-04-29 | 罗莱家纺股份有限公司 | Microcapsule phase change temperature adjusting fibers and preparation method of fabric thereof |
| CN104650816A (en) * | 2015-02-06 | 2015-05-27 | 桂林电子科技大学 | Low-temperature phase-change energy storage microcapsule and preparation method thereof |
| CN104802478A (en) * | 2015-04-23 | 2015-07-29 | 北京宇田相变储能科技有限公司 | Intelligent thermal-storage and temperature-adjustment composite fabric |
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| CN106367031A (en) * | 2015-07-20 | 2017-02-01 | 天津城建大学 | High thermal conductivity composite phase change microcapsule and preparation method thereof |
| CN106978145A (en) * | 2017-04-06 | 2017-07-25 | 上海电力学院 | The microcapsule phase-change particle and preparation method of composite Nano aluminium and CNT |
| CN107567938A (en) * | 2017-09-27 | 2018-01-12 | 运城学院 | A kind of propagation method of compound leaf grape |
| CN108048039A (en) * | 2017-12-26 | 2018-05-18 | 桂林电子科技大学 | A kind of nano zinc oxide modified microcapsules composite phase-change material and preparation method thereof |
| CN108841361A (en) * | 2018-05-15 | 2018-11-20 | 王雪峰 | A kind of preparation method of rancid object sizing heat-storing material |
| CN108794673A (en) * | 2018-07-02 | 2018-11-13 | 清华大学 | A kind of phase-change material micro-capsule and preparation method thereof |
| CN108794673B (en) * | 2018-07-02 | 2020-09-25 | 清华大学 | Phase-change material microcapsule and preparation method thereof |
| CN110565373A (en) * | 2019-10-21 | 2019-12-13 | 罗莱生活科技股份有限公司 | Temperature-adjusting textile and production method thereof |
| CN110565373B (en) * | 2019-10-21 | 2022-04-05 | 罗莱生活科技股份有限公司 | Temperature-adjusting textile and production method thereof |
| CN113774693A (en) * | 2021-08-10 | 2021-12-10 | 江南大学 | Preparation method of wide-waveband solar energy absorption azobenzene optical energy storage material |
| WO2023015848A1 (en) * | 2021-08-10 | 2023-02-16 | 江南大学 | Preparation method for wide-band solar energy absorption azobenzene light energy storage material |
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Application publication date: 20141105 |