CN103031114A - High-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and preparation method thereof - Google Patents
High-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and preparation method thereof Download PDFInfo
- Publication number
- CN103031114A CN103031114A CN2012101373490A CN201210137349A CN103031114A CN 103031114 A CN103031114 A CN 103031114A CN 2012101373490 A CN2012101373490 A CN 2012101373490A CN 201210137349 A CN201210137349 A CN 201210137349A CN 103031114 A CN103031114 A CN 103031114A
- Authority
- CN
- China
- Prior art keywords
- capsule
- phase change
- normal temperature
- phase
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Manufacturing Of Micro-Capsules (AREA)
Abstract
The invention relates to high-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and a preparation method thereof. The high-thermal-conductivity composite phase change energy storage microcapsules comprise organic phase change capsule cores and inorganic high-thermal-conductivity capsule walls, wherein the organic phase change capsule cores are prepared from two or more than two of alkane, fatty acids, polyether and derivatives of the polyether. The preparation method comprises the steps of: (1) preparing a capsule core material with an adjustable phase-transition temperature, (2) preparing an O/W (oil-in-water) emulsion; and (3) preparing the phase change energy storage microcapsules: dropwise adding tetraethylortho silicate to the emulsion, stirring for 1-6 hours at a speed of 300-1000rpm, aging and drying, thus obtaining the stable phase change energy storage microcapsules. The high-thermal-conductivity composite phase change energy storage microcapsules have the characteristics of high energy storage, high thermal conductivity, stable performance, designable and adjustable phase change temperature, suitability for various processing and the like and can be popularized and applied in industries such as energy-saving walls of buildings, commodity storage and transportation, medical equipment, food packaging and thermoregulation clothes.
Description
[technical field]
The present invention relates to adjustable controlled normal temperature phase change material technical field, specifically, is a kind of normal temperature high-heat-conducting composite phase-transition accumulation of energy micro-capsule and preparation method thereof.
[background technology]
Utilizing material phase transformation latent heat to carry out energy storage is a new technology in the field of energy utilization.Phase-changing energy-storing utilizes material neither endothermic nor exothermic in phase transition process to come storage power or releases energy, have the characteristics such as the approximate isothermal of storage density height, heat accumulation heat release, process be easy to control, and the advantage of organic phase change material is to be not easy to occur surfusion and to be separated, the corrodibility of material is less, performance is more stable, toxicity is little, and cost is low etc.The organic phase change material is commonly used paraffin, lipid acid, polyethers, ester class, alcohols, arene, fragrant ketone, amides etc., but these materials Shortcomings in actual applications:
(1) the liquid generation leakage pollution environment in these material solid-liquid phase-change process;
(2) organic phase change material heat conductivility poor (thermal conductivity is about 0.2W/mK) affects the heat content utilization ratio;
(3) satisfy normal temperature (20～40 ℃) and be adapted to the human phase change material that uses seldom.
A lot of to the phase change material modification that formalizes: the encapsulation of (1) porous, expanded graphite are filled phase change material to obtain thermal conductivity good, the matrix material that energy storage density is large, but have the defectives such as compressive deformation and shape stability be relatively poor; (2) add dystectic support material, when occurrence temperature is higher than transformation temperature, because the setting component makes to have kept fixed profile on the macroscopic view to the space constraint of liquid, but because the phase change material life-time service can exist the aging and phase change material of base material the problem such as to separate from the setting composition.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, a kind of normal temperature high-heat-conducting composite phase-transition accumulation of energy micro-capsule and preparation method thereof is provided.
The objective of the invention is to be achieved through the following technical solutions:
A kind of normal temperature high-heat-conducting composite phase-transition accumulation of energy micro-capsule, it is organic phase-change capsule-core and inorganic high heat conduction cyst wall.
Described organic phase-change capsule-core transformation temperature scope is 20～40 ℃ of variations, and composite microcapsule transformation temperature variation range is at 20～40 ℃.
Described organic phase-change capsule-core refers to two or more the material in alkane, lipid acid, polyethers and the derivative thereof.
That described organic phase-change capsule-core comprises is sad, two or more the material in the capric acid, lauric acid, tetradecanoic acid, palmitinic acid, stearic acid, heptadecane, octadecane, nonadecane, eicosane, PEG400, PEG600, PEG1000, PEG2000, PEG4000, PEG6000, PEG10000.
Described inorganic high heat conduction cyst wall is tetraethoxy sol-gel product, and hydrolysis reaction occurs in the aqueous solution tetraethoxy, and obtains the three-dimensional network gel by polycondensation, at last the moisture oven dry is obtained the inorganic high heat conduction cyst wall of white.
The mass ratio of described organic phase-change capsule-core and inorganic high heat conduction cyst wall is 0.5: 1～5.0: 1.
A kind of normal temperature preparation method of high-heat-conducting composite phase-transition accumulation of energy micro-capsule, its concrete steps are:
(1) the adjustable core materials of preparation transformation temperature
The organic phase-change core materials is mixed with mixture, and 40～60 ℃ kept under constant temperature 2～5 hours;
That described organic phase-change core materials comprises is sad, two or more the material in the capric acid, lauric acid, tetradecanoic acid, palmitinic acid, stearic acid, heptadecane, octadecane, nonadecane, eicosane, PEG400, PEG600, PEG1000, PEG2000, PEG4000, PEG6000, PEG10000;
(2) preparation O/W emulsion
Above-mentioned core materials is joined in the solution that tensio-active agent is housed, and it is 2.0～4.0 that emulsion is transferred to the pH value, makes and stablizes the O/W emulsion;
Dosage of surfactant is 0.1～10% of solution total amount, and tensio-active agent comprises cationic, such as Trimethyllaurylammonium bromide, Tetradecyl Trimethyl Ammonium Bromide, cetyl trimethylammonium bromide, Cetyltrimethylammonium bromide etc.; Nonionic surface active agent: polysorbate60, tween 80, department's basis 60, department's basis 80, polyethers etc.;
(3) preparation phase-changing energy-storing micro-capsule
Tetraethoxy slowly is added drop-wise in the above-mentioned emulsion, and 300～1000rpm stirred 1～6 hour, and ageing is dry, makes at last and stablizes the phase-changing energy-storing micro-capsule;
Tetraethoxy produces great amount of hydroxy group with deionized water generation hydrolysis reaction in the aqueous solution, through hydroxyl dehydration polycondensation generating three-dimensional network structure, after ageing was stable, with the moisture oven dry, obtaining cyst wall was the phase-changing energy-storing micro-capsule of white silicon-dioxide again; Its water is 20: 1～1: 1 with the tetraethoxy ratio, and the organic phase-change core materials is 0.5: 1～5.0: 1 with the tetraethoxy ratio.
Compared with prior art, positively effect of the present invention is:
(1) latent heat amount of the present invention is large, accumulation of energy is effective;
(2) thermal conductivity of the present invention is good, is conducive to heat transfer and conversion;
(3) stability of the present invention is high, because the inorganic capsule material of silicon-dioxide has high temperature resistant, corrosion-resistant, low thermal coefficient of expansion component, stability is strong;
(4) the present invention prepares serial normal temperature phase-changing energy storage material that nature does not have, that transformation temperature can design adjusting.
[description of drawings]
Fig. 1 is the DSC figure that serial normal temperature of the present invention is used phase change material;
Fig. 2 is the DSC figure of high-heat-conducting composite phase-transition accumulation of energy micro-capsule of the present invention.
[embodiment]
The embodiment of a kind of normal temperature of the present invention with high-heat-conducting composite phase-transition accumulation of energy micro-capsule and preparation method thereof below is provided.
Embodiment 1
(1) sad, palmitinic acid being set mass ratio is 9: 1, fully mixes 0.5～5 hour under 40～100 ℃ of constant temperatures, and product is as core materials, and is for subsequent use;
(2) tensio-active agent, water, core materials etc. are joined to transfer to the pH value in the beaker be 3～5, homogeneous latex emulsion was made in emulsification in 3～10 minutes;
(3) a certain amount of tetraethoxy (core ester ratio is 0.5: 1) slowly is added drop-wise in the above-mentioned emulsion, reacted under the certain temperature 1～6 hour, ageing is washed at last drying and is made normal temperature with high heat conduction phase-changing energy-storing micro-capsule.
(1) capric acid, stearic acid being set mass ratio is 9: 1, fully mixes 0.5～5 hour under 40-100 ℃ of constant temperature, and product is as core materials, and is for subsequent use;
(2) tensio-active agent, water, core materials etc. are joined to transfer to the pH value in the beaker be 3～5, homogeneous latex emulsion was made in emulsification in 3～10 minutes;
(3) a certain amount of tetraethoxy (core ester ratio is 1: 1) slowly is added drop-wise in the above-mentioned emulsion, reacted under the certain temperature 1～6 hour, ageing is washed at last drying and is made normal temperature with high heat conduction phase-changing energy-storing micro-capsule.
Embodiment 3
(1) PEG600, PEG1000 being set mass ratio is 9: 1, fully mixes 0.5～5 hour under 40-100 ℃ of constant temperature, and product is as core materials, and is for subsequent use;
(2) tensio-active agent, water, core materials etc. are joined to transfer to the pH value in the beaker be 3～5, homogeneous latex emulsion was made in emulsification in 3～10 minutes;
(3) a certain amount of tetraethoxy (core ester ratio is 1.5: 1) slowly is added drop-wise in the above-mentioned emulsion, reacted under the certain temperature 1～6 hour, ageing is washed at last drying and is made normal temperature with high heat conduction phase-changing energy-storing micro-capsule.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (8)
1. a normal temperature is characterized in that with high-heat-conducting composite phase-transition accumulation of energy micro-capsule it is organic phase-change capsule-core and inorganic high heat conduction cyst wall.
2. a kind of normal temperature as claimed in claim 1 is characterized in that with high-heat-conducting composite phase-transition accumulation of energy micro-capsule described organic phase-change capsule-core transformation temperature scope is 20～40 ℃ of variations, and composite microcapsule transformation temperature variation range is at 20～40 ℃.
3. a kind of normal temperature as claimed in claim 1 is characterized in that with high-heat-conducting composite phase-transition accumulation of energy micro-capsule, and described organic phase-change capsule-core refers to two or more the material in alkane, lipid acid, polyethers and the derivative thereof.
4. a kind of normal temperature as claimed in claim 3 is with high-heat-conducting composite phase-transition accumulation of energy micro-capsule, it is characterized in that that described organic phase-change capsule-core comprises is sad, two or more the material in the capric acid, lauric acid, tetradecanoic acid, palmitinic acid, stearic acid, heptadecane, octadecane, nonadecane, eicosane, PEG400, PEG600, PEG1000, PEG2000, PEG4000, PEG6000, PEG10000.
5. a kind of normal temperature as claimed in claim 1 is with high-heat-conducting composite phase-transition accumulation of energy micro-capsule, it is characterized in that, described inorganic high heat conduction cyst wall is tetraethoxy sol-gel product, hydrolysis reaction occurs in tetraethoxy in the aqueous solution, and obtain the three-dimensional network gel by polycondensation, at last the moisture oven dry is obtained the inorganic high heat conduction cyst wall of white.
6. a kind of normal temperature as claimed in claim 1 is characterized in that with high-heat-conducting composite phase-transition accumulation of energy micro-capsule the mass ratio of described organic phase-change capsule-core and inorganic high heat conduction cyst wall is 0.5: 1～5.0: 1.
7. a normal temperature is characterized in that its concrete steps are with the preparation method of high-heat-conducting composite phase-transition accumulation of energy micro-capsule:
(1) the adjustable core materials of preparation transformation temperature
The organic phase-change core materials is mixed with mixture, and 40～60 ℃ kept under constant temperature 2～5 hours;
That described organic phase-change core materials comprises is sad, two or more the material in the capric acid, lauric acid, tetradecanoic acid, palmitinic acid, stearic acid, heptadecane, octadecane, nonadecane, eicosane, PEG400, PEG600, PEG1000, PEG2000, PEG4000, PEG6000, PEG10000;
(2) preparation O/W emulsion
Above-mentioned core materials is joined in the solution that tensio-active agent is housed, and it is 2.0～4.0 that emulsion is transferred to the pH value, makes and stablizes the O/W emulsion;
Dosage of surfactant is 0.1～10% of solution total amount, and tensio-active agent comprises cationic;
(3) preparation phase-changing energy-storing micro-capsule
Tetraethoxy slowly is added drop-wise in the above-mentioned emulsion, and 300～1000rpm stirred 1～6 hour, and ageing is dry, makes at last and stablizes the phase-changing energy-storing micro-capsule.
8. a kind of normal temperature as claimed in claim 7 is with the preparation method of high-heat-conducting composite phase-transition accumulation of energy micro-capsule, it is characterized in that, in described step (3), tetraethoxy produces great amount of hydroxy group with deionized water generation hydrolysis reaction in the aqueous solution, again through hydroxyl dehydration polycondensation generating three-dimensional network structure, after ageing was stable, with the moisture oven dry, obtaining cyst wall was the phase-changing energy-storing micro-capsule of white silicon-dioxide; Its water is 20: 1～1: 1 with the tetraethoxy ratio, and the organic phase-change core materials is 0.5: 1～5.0: 1 with the tetraethoxy ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101373490A CN103031114A (en) | 2012-05-03 | 2012-05-03 | High-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101373490A CN103031114A (en) | 2012-05-03 | 2012-05-03 | High-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103031114A true CN103031114A (en) | 2013-04-10 |
Family
ID=48018523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101373490A Pending CN103031114A (en) | 2012-05-03 | 2012-05-03 | High-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103031114A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331134A (en) * | 2013-06-25 | 2013-10-02 | 中国林业科学研究院林产化学工业研究所 | Epoxy resin microcapsule coated by tetraethyl orthosilicate, and preparation method of the epoxy resin microcapsule |
| CN104592946A (en) * | 2013-11-04 | 2015-05-06 | 中国石油化工股份有限公司 | Preparation method of nano-capsule composite phase change material |
| CN106497521A (en) * | 2016-10-12 | 2017-03-15 | 南京工业大学 | Preparation method of ternary fatty acid-silicon dioxide composite shape-stabilized phase change material |
| CN106788221A (en) * | 2017-01-06 | 2017-05-31 | 华北电力大学 | A kind of solar panel temperature control device |
| CN109096997A (en) * | 2018-09-28 | 2018-12-28 | 青岛大学 | A kind of preparation method of coated with silica polyethylene glycol phase-change material |
| CN110079880A (en) * | 2019-04-08 | 2019-08-02 | 山东银鹰化纤有限公司 | A kind of inorganic fire-retarded temperature-adjusting viscose and preparation method thereof |
| CN111839879A (en) * | 2020-08-05 | 2020-10-30 | 中国人民解放军总医院第八医学中心 | Cooling assembly based on phase-change material |
| CN113121096A (en) * | 2021-05-31 | 2021-07-16 | 北京市永康药业有限公司 | Glass chemical tempering furnace with good heat insulation |
| CN117304881A (en) * | 2023-09-26 | 2023-12-29 | 波司登羽绒服装有限公司 | Phase-change microcapsule material and preparation method and application thereof |
| CN117720881A (en) * | 2023-09-16 | 2024-03-19 | 广东长特思智能电器科技有限公司 | Insulating high-thermal-conductivity aqueous phase-change gel and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844296A (en) * | 2006-05-08 | 2006-10-11 | 清华大学深圳研究生院 | Phase-transition energy-storage microcapsules and their preparing process |
| CN1869145A (en) * | 2005-05-26 | 2006-11-29 | 同济大学 | Method of preparing organic molecular alloy phase change energy storage material |
| CN1995264A (en) * | 2006-12-06 | 2007-07-11 | 清华大学深圳研究生院 | Silicon dioxde coated phase-change energy-storage material microcapsule preparation method |
| CN101368087A (en) * | 2007-10-22 | 2009-02-18 | 清华大学深圳研究生院 | Preparation method for composite phase-change energy accumulation material micro mist |
| CN101392461A (en) * | 2008-10-15 | 2009-03-25 | 清华大学深圳研究生院 | Phase change energy storage low temperature face mask substrate material and preparation method thereof |
| CN101824307A (en) * | 2010-04-30 | 2010-09-08 | 北京化工大学 | Composite phase-change energy storage material for microcapsule and preparation method thereof |
-
2012
- 2012-05-03 CN CN2012101373490A patent/CN103031114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869145A (en) * | 2005-05-26 | 2006-11-29 | 同济大学 | Method of preparing organic molecular alloy phase change energy storage material |
| CN1844296A (en) * | 2006-05-08 | 2006-10-11 | 清华大学深圳研究生院 | Phase-transition energy-storage microcapsules and their preparing process |
| CN1995264A (en) * | 2006-12-06 | 2007-07-11 | 清华大学深圳研究生院 | Silicon dioxde coated phase-change energy-storage material microcapsule preparation method |
| CN101368087A (en) * | 2007-10-22 | 2009-02-18 | 清华大学深圳研究生院 | Preparation method for composite phase-change energy accumulation material micro mist |
| CN101392461A (en) * | 2008-10-15 | 2009-03-25 | 清华大学深圳研究生院 | Phase change energy storage low temperature face mask substrate material and preparation method thereof |
| CN101824307A (en) * | 2010-04-30 | 2010-09-08 | 北京化工大学 | Composite phase-change energy storage material for microcapsule and preparation method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331134A (en) * | 2013-06-25 | 2013-10-02 | 中国林业科学研究院林产化学工业研究所 | Epoxy resin microcapsule coated by tetraethyl orthosilicate, and preparation method of the epoxy resin microcapsule |
| CN103331134B (en) * | 2013-06-25 | 2015-04-08 | 中国林业科学研究院林产化学工业研究所 | Epoxy resin microcapsule coated by tetraethyl orthosilicate, and preparation method of the epoxy resin microcapsule |
| CN104592946A (en) * | 2013-11-04 | 2015-05-06 | 中国石油化工股份有限公司 | Preparation method of nano-capsule composite phase change material |
| CN106497521A (en) * | 2016-10-12 | 2017-03-15 | 南京工业大学 | Preparation method of ternary fatty acid-silicon dioxide composite shape-stabilized phase change material |
| CN106788221B (en) * | 2017-01-06 | 2019-02-05 | 华北电力大学 | A kind of solar panel temperature control device |
| CN106788221A (en) * | 2017-01-06 | 2017-05-31 | 华北电力大学 | A kind of solar panel temperature control device |
| CN109096997A (en) * | 2018-09-28 | 2018-12-28 | 青岛大学 | A kind of preparation method of coated with silica polyethylene glycol phase-change material |
| CN110079880A (en) * | 2019-04-08 | 2019-08-02 | 山东银鹰化纤有限公司 | A kind of inorganic fire-retarded temperature-adjusting viscose and preparation method thereof |
| CN110079880B (en) * | 2019-04-08 | 2021-09-24 | 山东银鹰化纤有限公司 | Inorganic flame-retardant temperature-regulating viscose fiber and preparation method thereof |
| CN111839879A (en) * | 2020-08-05 | 2020-10-30 | 中国人民解放军总医院第八医学中心 | Cooling assembly based on phase-change material |
| CN113121096A (en) * | 2021-05-31 | 2021-07-16 | 北京市永康药业有限公司 | Glass chemical tempering furnace with good heat insulation |
| CN117720881A (en) * | 2023-09-16 | 2024-03-19 | 广东长特思智能电器科技有限公司 | Insulating high-thermal-conductivity aqueous phase-change gel and preparation method thereof |
| CN117304881A (en) * | 2023-09-26 | 2023-12-29 | 波司登羽绒服装有限公司 | Phase-change microcapsule material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103031114A (en) | High-thermal-conductivity composite phase change energy storage microcapsules used at normal temperature and preparation method thereof | |
| Yang et al. | Synthesis of high latent heat lauric acid/silica microcapsules by interfacial polymerization method for thermal energy storage | |
| He et al. | Phase-change characteristics and thermal performance of form-stable n-alkanes/silica composite phase change materials fabricated by sodium silicate precursor | |
| CN103555280B (en) | A kind of Organic phase change thermal storage material and production method thereof | |
| CN104069783B (en) | A kind of preparation method of composite micro-capsule of carbon nano-tube modification | |
| CN109536137A (en) | Phase-change microcapsule and preparation method thereof a kind of while that there is magnetism and photothermal conversion characteristic | |
| CN107384327A (en) | Organic phase-change microcapsule of graphene oxide doped silica inorganic wall material cladding and preparation method thereof | |
| Wan et al. | Thermal characterization of net-like and form-stable ML/SiO2 composite as novel PCM for cold energy storage | |
| Wang et al. | Review of encapsulated salt hydrate core-shell phase change materials | |
| CN102432258A (en) | Shaped phase change energy storage material for building and preparation method thereof | |
| CN110204751A (en) | A kind of preparation method of phase-change material flexible membrane | |
| KR102346473B1 (en) | Phase Change Materials Core-Mesoporous Silica Shell Organic Inorganic Hybrid Microcapsules and The Manufacturing Method Thereof | |
| CN104087077A (en) | Phase-change heat storage insulation coating based on phase-change heat storage as well as preparation method and application of coating | |
| CN105441035A (en) | Method for preparing big organic/inorganic composite capsules | |
| CN101747868A (en) | Composite phase change energy storage material and preparation method thereof | |
| Saputro et al. | Performance of metal and non-metal coated phase change materials microcapsules when used in compressed air energy storage system | |
| CN102989381A (en) | Preparation technology of liquid microcapsule gel breaker by controlling pH value of system | |
| CN110961054B (en) | Composite phase-change microcapsule type fluid for high-voltage environment, preparation and application | |
| CN106957635A (en) | The microcapsule phase-change particle and preparation method of composite Nano copper and nano-graphene piece | |
| Yunlong et al. | Microencapsulated waste cooking oil derivatives for building thermoregulation | |
| Sonare et al. | Review on applications of microencapsulated phase change material in buildings for thermal storage system | |
| Yuan et al. | Review on Thermal Properties with Influence Factors of Solid–Liquid Organic Phase-Change Micro/Nanocapsules | |
| CN104592946A (en) | Preparation method of nano-capsule composite phase change material | |
| CN101121875A (en) | Phase-change energy-storage composite material and preparation method thereof | |
| CN101343530A (en) | Phase-change heat-storing material and preparation thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |