CN106978146A - The microcapsule phase-change particle and preparation method of composite Nano copper and graphene quantum dot - Google Patents
The microcapsule phase-change particle and preparation method of composite Nano copper and graphene quantum dot Download PDFInfo
- Publication number
- CN106978146A CN106978146A CN201710220759.4A CN201710220759A CN106978146A CN 106978146 A CN106978146 A CN 106978146A CN 201710220759 A CN201710220759 A CN 201710220759A CN 106978146 A CN106978146 A CN 106978146A
- Authority
- CN
- China
- Prior art keywords
- core
- wall material
- quantum dot
- graphene quantum
- wall
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
Abstract
A kind of microcapsule phase-change particle of composite Nano copper and graphene quantum dot, including core, wall material is provided with the outside of core, Nanometer Copper and graphene quantum dot is provided with wall material and core, the quality sum of Nanometer Copper and graphene quantum dot is 3% the 5% of core wall gross mass.The invention provides the preparation method of above-mentioned microencapsulated phase change material, the step of core and wall material being weighed including one, one the step of weigh composite nanoparticle, the step of one preparation wall material solution, one the step of prepare core composite solution, the step of one microcapsules is molded, the step that a microcapsules are dried.The present invention improves three kinds of characteristics simultaneously by the composite Nano copper into core and wall material and graphene quantum dot, change the density of microencapsulated phase change material particle, improve thermal conductivity factor, reduce degree of supercooling, obtain the microencapsulated phase change material of medium density, high thermal conductivity coefficient, low degree of supercooling, composite Nano copper and graphene quantum dot.
Description
Technical field
The invention belongs to materialogy field, it is related to a kind of phase-change material, specifically a kind of improved microcapsule phase-change
Material and preparation method.
Background technology
Microcapsules technology is a kind of technology that solid or liquid cladding are made to form fine particle with filmogen.Obtain
Fine particle claims microcapsules, and general particle size is in 1~300 μ m.Wrap material inside microcapsules be referred to as capsule-core (
Referred to as core, kernel), capsule-core material is phase-change material（PCM）Be referred to as microencapsulated phase change material (MPCM).Phase-change microcapsule hangs
Supernatant liquid is then that the microencapsulated phase change material particle that will be prepared is scattered in monophasic fluid（Such as water, conduction oil）The suspension of middle formation
Liquid.
Microcapsules technology research starts from the thirties in last century, and with being attended by the most momentous results the fifties.In whole evolution
In, the research in the U.S. is constantly in leading position, and Japan also gradually has caught up with the 60-70 ages.
The preparation method of microencapsulated phase change material substantially res divisibiles logos, polymerisation method, phase separation method three major types.Physics
Method is the physical change by microcapsule wall material, and microencapsulation is carried out using certain mechanical processing toolses, mainly has spraying dry
Dry method.Raw material difference, the difference of polymerization methodses used in wall material are prepared when can be according to microencapsulation for polymerisation method, point
For situ aggregation method, interfacial polymerization and suspensoid cross method.Phase separation rule is the physicochemical properties using polymer, i.e. phase
The property of separation, so also known as physical-chemical process, mainly there is Simple coacervation, complex coacervation.In the system of microencapsulated phase change material
In standby, frequently with method have situ aggregation method, interfacial polymerization, spray drying process and complex coacervation.
1st, situ aggregation method.
Situ aggregation method is the inside or outer that the monomer and initiator that form wall material are all scattered in PCMs emulsion droplets
Portion, occurs polymerisation in droplet surface, and monomer is solvable in continuous phase, and the polymer of generation is insoluble, is covered in drop table
Bread covers to form microcapsules.Situ aggregation method when preparing phase-change microcapsule using more, its key be the polymer to be formed such as
What precipitates and is coated on the surface of core.
2nd, interfacial polymerization.
Interfacial polymerization is two kinds of different activities monomers containing double (many) functional groups, is dissolved in respectively not miscible
In dispersed phase and continuous phase, core is dissolved in scattered phase solvent, two kinds of polymerization reaction monomers are respectively inside two-phase to emulsification
The Interface Moving of drop, and polycondensation reaction is carried out on two-phase interface rapidly, core is wrapped up, microcapsules are formed.
3rd, spray drying process.
Spray drying process is a kind of physical method.Phase-change material micro-capsule is prepared with spray drying process, is first had to core
Material is dispersed in wall material solution, is then atomized this mixed liquor in high temperature gas flow, the solvent of dissolving wall material is evaporated rapidly,
So that wall material solidifies and is coated on core.Spray drying process be suitable to lipophile liquid material microencapsulation, core dredge
Aqueous stronger, embedding effect is better.
4th, complex coacervation.
Complex coacervation refers to do wall material with the high polymer material of opposite charges by two or more, and core is dispersed in into wall
In material solution, under proper condition（Such as change ph values or temperature）So that occur electrostatic interaction between the polymer of opposite charges.Band
After the high polymer material interaction of opposite charges, solution solubility reduces and produces phase separation, and cohesion forms microcapsules.
Microencapsulated phase change material particle above has many good qualities in application:
（1）Constant temperature is kept as the construction material regulation temperature difference, the comfort level that people live indoors is improved.
（2）The clothes of cold and hot regulatory function are made as textile material additive.
（3）Recyclable waste heat, improves energy utilization rate.
（4）The refrigerating of suspension is made in microencapsulated phase change material particle（Heat）Ability is stronger than water, is situated between available for augmentation of heat transfer
Matter and heat accumulating.
Microencapsulated phase change material possesses the outstanding advantages of the above, there is very wide application in using energy source and field of heat exchange
Prospect.As heat transfer medium, it can apply to the therrmodynamic systems such as Aero-Space, electronics, central air-conditioning, chemical industry, power plant, cooling
System and heat exchanger, as heat-storing material it can apply to the fields such as central air-conditioning, Solar use storage it is cold/heat accumulation system
System.Microencapsulated Phase Change Material Suspension storage density is high, has higher application potential in terms of solar energy heat-storage, is conducive to economy to build
If, social development, expand renewable energy utilization rate.
But the microencapsulated phase change material particle applied in the market, still suffers from certain defect, make its practical application by
To certain limitation, defect is as follows：
（1）Because the density of microencapsulated phase change material particle is big with water difference, suspension is configured to by base fluid of water as energy storage
Easily it is layered during the material of material or augmentation of heat transfer, physical stability is poor.
（2）Because the preparing raw material of existing microencapsulated phase change material particle is generally paraffin, high-molecular organic material etc., lead
Hot coefficient is smaller, limits its application in terms of augmentation of heat transfer.
（3）Due to solidification（Liquid is changed into solid）Temperature is less than melting（Solid is changed into liquid）Temperature, it may appear that supercooling is existing
As.This can be such that latent heat is discharged within the scope of the temperature of lower temperature or bigger, be unfavorable for the storage of energy.
The content of the invention
For above-mentioned technical problem of the prior art, the invention provides a kind of composite Nano copper and graphene quantum dot
Microcapsule phase-change particle, described this composite Nano copper and the microcapsule phase-change particle and preparation method of graphene quantum dot
Solve poor microencapsulated phase change material granule stability of the prior art, poor thermal conductivity, energy be unfavorable for storage technology ask
Topic.
The invention provides a kind of composite Nano copper and the microcapsule phase-change particle of graphene quantum dot, including core, institute
It is provided with wall material on the outside of the core stated, the mass ratio of core and wall material is 2-5:1, in described wall material and described core
Nanometer Copper and graphene quantum dot are provided with, is any mass ratio between described Nanometer Copper and graphene quantum dot, it is described
Nanometer Copper and graphene quantum dot quality sum be core wall gross mass 3%-5%.
Present invention also offers the system of a kind of above-mentioned composite Nano copper and the microcapsule phase-change particle of graphene quantum dot
Preparation Method, comprises the following steps：
1) one the step of weigh core and wall material, be 2-5 according to core wall mass ratio:1 weighs core and wall material；
2) one the step of weigh composite nanoparticle, described composite nanoparticle is mixed by Nanometer Copper and graphene quantum dot
Form, be any mass ratio between described Nanometer Copper and graphene quantum dot, the quality of described composite nanoparticle is core
The 3%-5% of wall gross mass；
3) one the step of prepare wall material solution, the wall material of microcapsules is referred to as the first wall material and the by two kinds of material compositions
Two wall materials, its mass ratio is 1:1, respectively by the first wall material and the second wall material be dissolved in meltage water be made the first wall material solution and
Second wall material solution.
4) one the step of prepare core composite solution, core is dissolved in the first wall material, the nanometer weighed is then added
Copper and graphene quantum dot mixture, core composite solution is obtained using ultrasonic processor is scattered；
5) a step of microcapsules are molded, by step 4）In core composite solution be placed in agitator stirring, in whipping process
The second wall material solution is constantly added dropwise, pH value is adjusted to 4-5 using PH conditioning agents；
6) microcapsule suspensions in 5) are placed in spray dryer drying, obtain microcapsules by the step that a microcapsules are dried
Phase-change material.
Further, the first described wall material is gelatin, and the second wall material is Arabic gum.
Further, described core is n-octadecane, aliphatic hydrocarbon, paraffin, aliphatic acid or fatty acid ester.
Further, the PH conditioning agents are sulfuric acid, hydrochloric acid or citric acid.
Nano-particle of the invention by being combined two kinds of materials, while improving three kinds of characteristics.
(1) density of microencapsulated phase change material particle of the present invention is changed by two kinds of compound fine particles.By calculating
Addition is determined, the density and required base fluid density of microencapsulated phase change material particle can be made same or like, so as to suppress micro-
Capsule phase change material particle is layered in base fluid, improves the physical stability of suspension.
(2) thermal conductivity factor of microencapsulated phase change material particle of the present invention can be changed by the two kinds of nano-particles added.
The thermal conductivity factor of existing microencapsulated phase change material particle is smaller, and the 3rd class material introduced and the 4th class material thermal conductivity factor phase
To larger.The thermal conductivity factor of microencapsulated phase change material particle, enhanced heat exchange can be effectively improved.
(3) microencapsulated phase change material particle of the present invention can be used as microcapsule phase-change because there is the addition of two kinds of nano-particles
Core solidifies in material granule（Liquid is changed into solid）When nucleator, so as to reduce degree of supercooling.
The present invention is compared with prior art, and its technological progress is significant.The present invention into core and wall material by being combined
Nanometer Copper and graphene quantum dot to improve three kinds of characteristics simultaneously, that is, adjust the density of microencapsulated phase change material particle, improve and lead
Hot coefficient, reduce degree of supercooling, obtain density and base fluid is close, high thermal conductivity coefficient, low degree of supercooling, composite Nano copper and graphene amount
The microencapsulated phase change material of son point.
Brief description of the drawings
During Fig. 1 is a kind of structural representation of improved microencapsulated phase change material of the present invention, figure：1st, wall material；2nd, core；3、
Nanometer Copper；4th, graphene quantum dot.
Embodiment
The invention provides the preparating example of two microencapsulated phase change materials：
Embodiment 1
1) one the step of weigh core and wall material, be 2 according to core wall mass ratio:1 to weigh core n-octadecane 40g, wall material bright
Glue and each 10g of Arabic gum；
2) it is total that the step of determination Nanocomposites amount, composite Nano copper and the total compound quantity of graphene quantum dot account for core wall
The 3% of quality, i.e. 1.8g；
3) one the step of prepare Nanometer Copper and graphene quantum dot mixture, Nanometer Copper and graphene quantum dot in mass ratio 1:
1, take 0.9g Nanometer Copper 0.9g graphene quantum dots to obtain Nanometer Copper and graphene quantum dot mixture；
4) one prepare wall material solution the step of, by the first wall material gelatin and the second wall material Arabic gum be dissolved in respectively 100g go from
The first wall material solution and the second wall material solution is made in sub- water；
5) one the step of prepare core composite solution, core is dissolved in the first wall material solution, the nanometer weighed is then added
Copper and graphene quantum dot mixture, core composite solution is obtained using ultrasonic processor is scattered；
6) a step of microcapsules are molded, by step 4）In core composite solution be placed in agitator stirring, in whipping process
The second wall material solution is constantly added dropwise, pH value is adjusted to 4-5 using hydrochloric acid solution；
7) microcapsule suspensions in 5) are placed in spray dryer drying, obtain microcapsules by the step that a microcapsules are dried
Phase-change material.
Embodiment 2
1) one the step of weigh core and wall material, be 3 according to core wall mass ratio:1 weigh core paraffin 60g, wall material gelatin and
Each 10g of Arabic gum；
2) it is total that the step of determination Nanocomposites amount, composite Nano copper and the total compound quantity of graphene quantum dot account for core wall
The 5% of quality, i.e. 4g；
3) one the step of prepare Nanometer Copper and graphene quantum dot mixture, Nanometer Copper and graphene quantum dot in mass ratio 1:
3, take 1g Nanometer Copper 3g graphene quantum dots to obtain Nanometer Copper and graphene quantum dot mixture；
4) one prepare wall material solution the step of, by the first wall material gelatin and the second wall material Arabic gum be dissolved in respectively 100g go from
The first wall material solution and the second wall material solution is made in sub- water；
5) one the step of prepare core composite solution, core is dissolved in the first wall material solution, the nanometer weighed is then added
Copper and graphene quantum dot mixture, core composite solution is obtained using ultrasonic processor is scattered；
6) a step of microcapsules are molded, by step 4）In core composite solution be placed in agitator stirring, in whipping process
The second wall material solution is constantly added dropwise, pH value is adjusted to 4-5 using citric acid solution；
7) microcapsule suspensions in 5) are placed in spray dryer drying, obtain microcapsules by the step that a microcapsules are dried
Phase-change material.
Claims (5)
1. the microcapsule phase-change particle of a kind of composite Nano copper and graphene quantum dot, it is characterised in that：It is described including core
It is provided with wall material on the outside of core, the mass ratio of core and wall material is 2-5:1, it is all provided with described wall material and described core
Nanometer Copper and graphene quantum dot are equipped with, is any mass ratio between described Nanometer Copper and graphene quantum dot, described receives
The quality sum of rice copper and graphene quantum dot is the 3%-5% of core wall gross mass.
2. a kind of preparation method of the microcapsule phase-change particle of composite Nano copper and graphene quantum dot described in claim 1,
It is characterized in that comprising the following steps：
1）One the step of weigh core and wall material, be 2-5 according to core wall mass ratio:1 weighs core and wall material；
2）One the step of weigh composite nanoparticle, described composite nanoparticle is mixed by Nanometer Copper and graphene quantum dot
Form, be any mass ratio between described Nanometer Copper and graphene quantum dot, the quality of described composite nanoparticle is core
The 3%-5% of wall gross mass；
3）One the step of prepare wall material solution, the wall material of microcapsules is referred to as the first wall material and the by two kinds of material compositions
Two wall materials, its mass ratio is 1:1, respectively by the first wall material and the second wall material be dissolved in meltage water be made the first wall material solution and
Second wall material solution；
4）One the step of prepare core composite solution, core is dissolved in the first wall material, then add the Nanometer Copper that weighs and
Graphene quantum dot mixture, core composite solution is obtained using ultrasonic processor is scattered；
5）The step of one microcapsules is molded, by step 4）In core composite solution be placed in agitator stirring, in whipping process
The second wall material solution is constantly added dropwise, pH value is adjusted to 4-5 using PH conditioning agents；
6）5) microcapsule suspensions in are placed in spray dryer drying, obtain microcapsules by the step that one microcapsules is dried
Phase-change material.
3. the preparation side of the microcapsule phase-change particle of a kind of composite Nano copper according to claim 2 and graphene quantum dot
Method, it is characterised in that：The first described wall material is gelatin, and the second wall material is Arabic gum.
4. the preparation side of the microcapsule phase-change particle of a kind of composite Nano copper according to claim 2 and graphene quantum dot
Method, it is characterised in that：Described core is n-octadecane, aliphatic hydrocarbon, paraffin, aliphatic acid or fatty acid ester.
5. the preparation side of the microcapsule phase-change particle of a kind of composite Nano copper according to claim 2 and graphene quantum dot
Method, it is characterised in that：The PH conditioning agents are sulfuric acid, hydrochloric acid or citric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220759.4A CN106978146A (en) | 2017-04-06 | 2017-04-06 | The microcapsule phase-change particle and preparation method of composite Nano copper and graphene quantum dot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220759.4A CN106978146A (en) | 2017-04-06 | 2017-04-06 | The microcapsule phase-change particle and preparation method of composite Nano copper and graphene quantum dot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106978146A true CN106978146A (en) | 2017-07-25 |
Family
ID=59343778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710220759.4A Pending CN106978146A (en) | 2017-04-06 | 2017-04-06 | The microcapsule phase-change particle and preparation method of composite Nano copper and graphene quantum dot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106978146A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486126A (en) * | 2019-08-12 | 2019-11-22 | 哈尔滨工业大学（威海） | Automobile engine residual heat recycling and reusing device and method |
| CN110591688A (en) * | 2019-09-06 | 2019-12-20 | 华南理工大学 | Phase-change paraffin microcapsule wrapping quantum dots, LED device and preparation method |
| CN114350324A (en) * | 2022-02-25 | 2022-04-15 | 广东工业大学 | Inorganic hydrated salt composite phase-change material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104640957A (en) * | 2012-03-16 | 2015-05-20 | 世宗大学校产学协力团 | Microcapsular quantum dot-polymer composite, method for producing the composite, optical elements, and method for producing the optical elements |
| CN105267991A (en) * | 2015-11-03 | 2016-01-27 | 吉林大学 | Microcapsule with fluorescent tracing and reduction responsive drug release functions and its preparation method |
| CN105419779A (en) * | 2015-12-24 | 2016-03-23 | 莫婉玲 | Quantum dot composite material having dual-component substrate and preparation method thereof |
| CN105542724A (en) * | 2016-01-21 | 2016-05-04 | 上海电力学院 | Microcapsule phase change particulate material doped with metal nano particles and preparation method of material |
-
2017
- 2017-04-06 CN CN201710220759.4A patent/CN106978146A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104640957A (en) * | 2012-03-16 | 2015-05-20 | 世宗大学校产学协力团 | Microcapsular quantum dot-polymer composite, method for producing the composite, optical elements, and method for producing the optical elements |
| CN105267991A (en) * | 2015-11-03 | 2016-01-27 | 吉林大学 | Microcapsule with fluorescent tracing and reduction responsive drug release functions and its preparation method |
| CN105419779A (en) * | 2015-12-24 | 2016-03-23 | 莫婉玲 | Quantum dot composite material having dual-component substrate and preparation method thereof |
| CN105542724A (en) * | 2016-01-21 | 2016-05-04 | 上海电力学院 | Microcapsule phase change particulate material doped with metal nano particles and preparation method of material |
Non-Patent Citations (2)
| Title |
|---|
| 张孔海: "《食品加工技术》", 28 February 2014, 中国轻工业出版社 * |
| 张明龙等: "《美国纳米技术创新进展》", 30 June 2014, 知识产权出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486126A (en) * | 2019-08-12 | 2019-11-22 | 哈尔滨工业大学（威海） | Automobile engine residual heat recycling and reusing device and method |
| CN110591688A (en) * | 2019-09-06 | 2019-12-20 | 华南理工大学 | Phase-change paraffin microcapsule wrapping quantum dots, LED device and preparation method |
| CN110591688B (en) * | 2019-09-06 | 2023-12-01 | 华南理工大学 | Phase-change paraffin microcapsule wrapping quantum dots, LED device and preparation method |
| CN114350324A (en) * | 2022-02-25 | 2022-04-15 | 广东工业大学 | Inorganic hydrated salt composite phase-change material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106957635A (en) | The microcapsule phase-change particle and preparation method of composite Nano copper and nano-graphene piece | |
| Chang et al. | Review on the preparation and performance of paraffin-based phase change microcapsules for heat storage | |
| Liu et al. | Preparation, heat transfer and flow properties of microencapsulated phase change materials for thermal energy storage | |
| Alehosseini et al. | Nanoencapsulation of phase change materials (PCMs) and their applications in various fields for energy storage and management | |
| Ghasemi et al. | PCM, nano/microencapsulation and slurries: A review of fundamentals, categories, fabrication, numerical models and applications | |
| CN106634857A (en) | Improved microcapsule phase-change material and preparation method thereof | |
| Sarı et al. | Thermal energy storage characteristics of myristic acid-palmitic eutectic mixtures encapsulated in PMMA shell | |
| Sami et al. | Thermal properties optimization of microencapsulated a renewable and non-toxic phase change material with a polystyrene shell for thermal energy storage systems | |
| Hawlader et al. | Microencapsulated PCM thermal-energy storage system | |
| CN106753261A (en) | A kind of microencapsulated phase change material and preparation method thereof | |
| Li et al. | Incorporation technology of bio-based phase change materials for building envelope: A review | |
| JP5366972B2 (en) | Method for producing microcapsules | |
| Liang et al. | Microencapsulation of butyl stearate as a phase change material by interfacial polycondensation in a polyurea system | |
| CN105542724A (en) | Microcapsule phase change particulate material doped with metal nano particles and preparation method of material | |
| CN104762066B (en) | Compound microcapsules of storing energy through phase change and preparation method thereof | |
| Irani et al. | Microencapsulation of n-heptadecane phase change material with starch shell | |
| Németh et al. | Fully bio-originated latent heat storing calcium alginate microcapsules with high coconut oil loading | |
| Sun et al. | Paraffin wax-based phase change microencapsulation embedded with silicon nitride nanoparticles for thermal energy storage | |
| CN106978146A (en) | The microcapsule phase-change particle and preparation method of composite Nano copper and graphene quantum dot | |
| Wang et al. | Review of encapsulated salt hydrate core-shell phase change materials | |
| CN104804711B (en) | Embedded enhanced thermal conduction microcapsules of storing energy through phase change and preparation method thereof | |
| Rao et al. | Preparation and thermal properties of microencapsulated phase change material for enhancing fluid flow heat transfer | |
| CN108624292A (en) | A kind of composite phase-change energy storage material for microcapsule and preparation method thereof | |
| Qiu et al. | Modification of microencapsulated phase change materials (MPCMs) by synthesizing graphene quantum dots (GQDs) and nano-aluminum for energy storage and heat transfer applications | |
| CN106978145A (en) | The microcapsule phase-change particle and preparation method of composite Nano aluminium and CNT |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |
|
| RJ01 | Rejection of invention patent application after publication |