CN108300420A - A method of using coal ash for manufacturing for phase-change energy storage capsule - Google Patents
A method of using coal ash for manufacturing for phase-change energy storage capsule Download PDFInfo
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- CN108300420A CN108300420A CN201711274200.6A CN201711274200A CN108300420A CN 108300420 A CN108300420 A CN 108300420A CN 201711274200 A CN201711274200 A CN 201711274200A CN 108300420 A CN108300420 A CN 108300420A
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- energy storage
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
Abstract
The invention discloses a kind of using coal ash for manufacturing for the method for phase-change energy storage capsule, includes the following steps：(1) preparation of hollow fly ash grain；(2) preparation of modified cellulose acetate；(3) it takes above-mentioned 100 120 parts of hollow fly ash grains to be added in the ethanol solution of excessive odium stearate to be ultrasonically treated, is filtered material after supersound process；(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated, phase-change energy storage capsule is obtained after static, extraction.The present invention passes through coating technology, the phase-change energy storage capsule internal layer of preparation is fixed by hollow fly ash grain, outermost layer has wrapped up modified cellulose acetate, and the volume change of obtained capsule-type phase-changing energy storage material is smaller, is more advantageous to and applies it in phase-changing energy-storing building materials.The present invention not only significantly reduces the production cost of PVC phase-changing energy-storing building materials, also solves problem of environmental pollution.
Description
Technical field
The invention belongs to technical field of phase-change energy storage, relate particularly to it is a kind of using coal ash for manufacturing for phase-change accumulation energy
The method of capsule.
Background technology
With the development of modern economy, urbanization building area constantly extends, thermal comfort of the people to building
Property demand grow to even greater heights, therefore, develop the rational and efficient use of new energy and the energy, have become this century mankind solution
Problem of energy crisis needs one of project urgently studied.
When phase-change material is phase-change material hair biofacies state transformation in materials for wall at a certain temperature, at the same it is adjoint
Neither endothermic nor exothermic appearance, plays the role of adjusting indoor temperature using the heat of latent heat storage.Phase-change material is applied to and is built
It builds in building enclosure, can solve the problems, such as that the conventional lightweight material thermal capacitance used in modern architecture is small, increase building enclosure knot
The heat storage capacity and thermal inertia of structure, and due to the larger latent heat of phase change of phase-change material, mixing a small amount of phase-change material can store greatly
Calorimetric amount, while also reducing the outer range of temperature of Indoor environment, can achieve the purpose that energy saving and improving hot comfort.
The requirement that should comply with practical application to the phase-change material screening of building energy saving field will reach the best heat accumulation effect of phase-change material
Fruit and cheap, easy to spread
Flyash is the byproduct generated due to coal combustion in coal-fired power plant.The generation of a large amount of flyash not only causes
The wasting of resources, also exacerbates environmental pollution, therefore the rational and efficient use of flyash seems even more important.Currently, often by powder
Preparation of the coal ash for cement, ceramics, Industrial Solid Waste is introduced into the preparation of material, the production cost of material can be significantly reduced.
Invention content
The object of the present invention is to provide a kind of preparation methods of the phase-change energy storage capsule of low production cost, are prepared
Phase-change energy storage capsule can be widely applied to the preparation of PVC phase-changing energy-storing building materials.
To achieve the above object, the technical scheme is that：
A method of using coal ash for manufacturing for phase-change energy storage capsule, include the following steps：
(1) preparation of hollow fly ash grain；
(2) preparation of modified cellulose acetate；
(3) it takes above-mentioned 100-120 parts of hollow fly ash grain to be added in the ethanol solution of excessive odium stearate to be surpassed
Material is filtered after supersound process by sonication；
(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated, after static, extraction
Obtain phase-change energy storage capsule.
Further, the preparation method of step (1) hollow fly ash grain includes the following steps：
At room temperature, grinding is uniform together after flyash and calcium carbonate are weighed in mass ratio, then carries out mixture by a
High temperature sintering；
B is ground after being cooled to room temperature the mixture after above-mentioned high temperature sintering, takes the powder after 200-300 parts of grindings
End, and excessive dilute hydrochloric acid is added and impregnates, is filtered after immersion, by filter residue wash with distilled water, drying, obtain hollow fine coal
Ash particle.
Further, the preparation method of the modified cellulose acetate of step (2) includes the following steps：
(a) at room temperature, coupling agent, initiator, ethyl acetate are weighed in mass ratio to put in the reaction vessel, be added dropwise
N-octyl alcohol after isothermal reaction, takes out reaction solution, rotates, dries to obtain modifying agent；
(b) after cellulose acetate and modifying agent being mixed evenly in mass ratio, melt modification is carried out, is obtained after cooling
Modified cellulose acetate.
Further, in step (3) ethanol solution of odium stearate mass fraction be 7-13%, supersound process when
Between be 2-3h.
Further, sonication treatment time is 25-36min, quiescent time 45-50h in step (4).
Further, flyash and calcium carbonate mass ratio are 100-150 in step a:60-80.
Further, the temperature of step a high temperatures calcination is 1700-2000 DEG C, the scorching hot time is 6-8h.
Further, the powder diameter after being ground in step b is 50-100 mesh；The mass fraction of dilute hydrochloric acid is 10-
The temperature of 15%, soaking time 22-26h, drying are 100-120 DEG C.
Further, coupling agent in step (a), initiator, ethyl acetate mass ratio be 8-10:0.3-0.5:80,
The n-octyl alcohol amount of addition is 8-10 parts, and the isothermal reaction time is 1.7-2.4h.
Further, the mass ratio of cellulose acetate and modifying agent is 120-150 in step (b):8-12.
Preferably, coupling agent is silane coupling agent, titanate coupling agent, MDI (methyl diphenylene diisocyanate), IPDI
It is one or more in (isophorone diisocyanate).
Preferably, initiator is one or more in dibutyl tin, tributyl tin, triphenyltin.
Compared with prior art, it is an advantage of the invention that：
1, the present invention has carried out modification to flyash and cellulose acetate respectively, the hollow flyash recycled
Particle and modified cellulose acetate prepare phase-change energy storage capsule.The present invention passes through coating technology, the phase-change energy storage capsule of preparation
Internal layer is fixed by hollow fly ash grain, and outermost layer has wrapped up modified cellulose acetate, obtained capsule-type phase-change accumulation energy material
The volume change of material is smaller, is more advantageous to and applies it in phase-changing energy-storing building materials.
2, the cellulose acetate of the modification for the phase-change energy storage capsule outermost layer package that the present invention is prepared is a kind of thermoplastic
Property material, modified cellulose acetate is close with PVC solubility parameters, when the two mixes, have preferable compatibility, so
It is not harsh to processing conditions requirement, it can be widely applied in PVC phase-changing energy-storing building materials.
3, flyash is used in raw material of the present invention, on the one hand, significantly reduce being produced into for PVC phase-changing energy-storing building materials
On the other hand flyash is rationally recycled, not only solves problem of environmental pollution, while also achieving fly ash highly by this
High-valued utility value.
4, the preparation method process of phase-change energy storage capsule is simple in the present invention, and operation is easy, reduces production cost.
Specific implementation mode
Technical solution in the embodiment of the present invention is subjected to clear, complete description below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment for being obtained without making creative work of technical staff, belong to the guarantor of the present invention
Protect range.
In the present embodiment melt modification is carried out using the mixture of double screw extruder Dichlorodiphenyl Acetate cellulose and modifying agent
Processing, wherein this section of screw rod is divided into three regions from feed inlet to discharge port, is transportation section, melt zone and melting section respectively.It is defeated
Send the temperature of section should not be too high, the too high material that can influence of temperature is in the conveying of this section and the shear action being subject to；Temperature is too low, spiral shell
Bar stress is excessive or easy to be stuck.The temperature of transportation section is generally slightly close to the temperature of melt zone.The temperature of melt zone is too low, after arriving
Section covering property is poor；Temperature is too high, and temperature refining becomes smaller with shear action, or even high temperature degradation occurs.Melting section, material are refined in this section
Dispersion, forms ideal size and structure.Raw material used according to the invention, the double screw extruder used in the present embodiment
Transportation section, melt zone, melting section temperature be 80-120 DEG C.
When carrying out melt modification using double screw extruder in the present embodiment, the engine speed of extruder is controlled in 12-15
Rev/min, rate of feeding is controlled at 120-150 revs/min.
Embodiment 1
A method of using coal ash for manufacturing for phase-change energy storage capsule, include the following steps：
(1) preparation of hollow fly ash grain：At room temperature, will be 100 in mass ratio:70 weigh flyash and calcium carbonate
Grinding is uniform together afterwards, then mixture is carried out to calcination 8h under 1900 DEG C of high temperature；By the mixture after above-mentioned high temperature sintering
It is ground after being cooled to room temperature, grain size is 90 mesh powders after taking 230 parts of grindings, and it is 10% that excessive mass fraction, which is added,
Dilute hydrochloric acid impregnate, be filtered after impregnating 26h, by filter residue wash with distilled water after dry at a temperature of 120 DEG C, obtain hollow
Fly ash grain.
(2) preparation of modified cellulose acetate：At room temperature, position 8 in mass ratio:0.3:80 weigh silane coupling agent, two
Butyl tin, ethyl acetate are put in the reaction vessel, are added dropwise 8 parts of n-octyl alcohols, after isothermal reaction 2h, take out reaction solution, revolving,
Dry to obtain modifying agent；It is 130 in mass ratio by cellulose acetate and modifying agent:After 10 are mixed evenly, it is put into double spiral shells
Melt modification is carried out in bar extruder, and cellulose acetate must be modified after cooling.
Wherein, double screw extruder transportation section temperature is 80 DEG C, melt zone temperature is 90 DEG C, melting section temperature is 80 DEG C,
At 12 revs/min, rate of feeding is controlled at 120 revs/min for engine speed control.
(3) take above-mentioned 100 parts of hollow fly ash grains that the ethyl alcohol for the odium stearate that excessive mass fraction is 10% is added
Supersound process 3h is carried out in solution, is filtered material after supersound process.
(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated 30min, it is then quiet
Only 48h obtains phase-change energy storage capsule after extraction.
Embodiment 2
A method of using coal ash for manufacturing for phase-change energy storage capsule, include the following steps：
(1) preparation of hollow fly ash grain：At room temperature, will be 130 in mass ratio:600 weigh flyash and carbonic acid
Grinding is uniform together after calcium, then mixture is carried out to calcination 6h under 2000 DEG C of high temperature；By the mixing after above-mentioned high temperature sintering
Object is ground after being cooled to room temperature, and grain size is 50 mesh powders after taking 270 parts of grindings, and excessive mass fraction is added and is
12% dilute hydrochloric acid impregnates, and is filtered after impregnating 25h, by filter residue wash with distilled water after dry at a temperature of 110 DEG C, obtain
Hollow fly ash grain.
(2) preparation of modified cellulose acetate：At room temperature, position 10 in mass ratio:0.3:80 weigh, titanate esters are coupled
Agent, the mixture of tributyl tin and triphenyltin, ethyl acetate are put in the reaction vessel, and 9 parts of n-octyl alcohols are added dropwise, and constant temperature is anti-
After answering 1.8h, reaction solution is taken out, rotates, dry to obtain modifying agent；It is 140 in mass ratio by cellulose acetate and modifying agent:8
It after being mixed evenly, is put into double screw extruder and carries out melt modification, cellulose acetate must be modified after cooling.
Wherein, double screw extruder transportation section temperature is 90 DEG C, melt zone temperature is 100 DEG C, melting section temperature is 110
DEG C, at 13 revs/min, rate of feeding is controlled at 130 revs/min for engine speed control.
(3) take the ethyl alcohol that the odium stearate that excessive mass fraction is 7% is added in above-mentioned 110 parts of hollow fly ash grains molten
Supersound process 2h is carried out in liquid, is filtered material after supersound process.
(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated 28min, it is then quiet
Only 49h obtains phase-change energy storage capsule after extraction.
Embodiment 3
A method of using coal ash for manufacturing for phase-change energy storage capsule, include the following steps：
(1) preparation of hollow fly ash grain：At room temperature, will be 110 in mass ratio:80 weigh flyash and calcium carbonate
Grinding is uniform together afterwards, then mixture is carried out to calcination 7h under 1800 DEG C of high temperature；By the mixture after above-mentioned high temperature sintering
It is ground after being cooled to room temperature, grain size is 100 mesh powders after taking 200 parts of grindings, and excessive mass fraction is added and is
14% dilute hydrochloric acid impregnates, and is filtered after impregnating 22h, by filter residue wash with distilled water after dry at a temperature of 115 DEG C, obtain
Hollow fly ash grain.
(2) preparation of modified cellulose acetate：At room temperature, position 9 in mass ratio:0.4:80 weigh the mixed of MDI and IPDI
Close object, tributyl tin, ethyl acetate are put in the reaction vessel, are added dropwise 10 parts of n-octyl alcohols, after isothermal reaction 2.2h, take out anti-
Liquid is answered, rotates, dry to obtain modifying agent；It is 120 in mass ratio by cellulose acetate and modifying agent:12 are mixed evenly
Afterwards, it is put into double screw extruder and carries out melt modification, cellulose acetate must be modified after cooling.
Wherein, double screw extruder transportation section temperature is 100 DEG C, melt zone temperature is 80 DEG C, melting section temperature is 120
DEG C, at 14 revs/min, rate of feeding is controlled at 140 revs/min for engine speed control.
(3) take above-mentioned 120 parts of hollow fly ash grains that the ethyl alcohol for the odium stearate that excessive mass fraction is 12% is added
Supersound process 2.5h is carried out in solution, is filtered material after supersound process.
(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated 36min, it is then quiet
Only 50h obtains phase-change energy storage capsule after extraction.
Embodiment 4
A method of using coal ash for manufacturing for phase-change energy storage capsule, include the following steps：
(1) preparation of hollow fly ash grain：At room temperature, will be 150 in mass ratio:70 weigh flyash and calcium carbonate
Grinding is uniform together afterwards, then mixture is carried out to calcination 6h under 1700 DEG C of high temperature；By the mixture after above-mentioned high temperature sintering
It is ground after being cooled to room temperature, grain size is 70 mesh powders after taking 300 parts of grindings, and it is 15% that excessive mass fraction, which is added,
Dilute hydrochloric acid impregnate, immersion is filtered afterwards for 24 hours, by filter residue wash with distilled water after dry at a temperature of 100 DEG C, obtain hollow
Fly ash grain.
(2) preparation of modified cellulose acetate：At room temperature, position 9 in mass ratio:0.5:80 weigh IPDI, triphenyltin,
Ethyl acetate is put in the reaction vessel, is added dropwise 10 parts of n-octyl alcohols, after isothermal reaction 1.7h, takes out reaction solution, revolving, drying
Obtain modifying agent；It is 150 in mass ratio by cellulose acetate and modifying agent:After 9 are mixed evenly, it is put into twin-screw extrusion
Melt modification is carried out in machine, and cellulose acetate must be modified after cooling.
Wherein, double screw extruder transportation section temperature is 120 DEG C, melt zone temperature is 110 DEG C, melting section temperature is 90
DEG C, at 15 revs/min, rate of feeding is controlled at 150 revs/min for engine speed control.
(3) take above-mentioned 100 parts of hollow fly ash grains that the ethyl alcohol for the odium stearate that excessive mass fraction is 13% is added
Supersound process 2.5h is carried out in solution, is filtered material after supersound process.
(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated 25min, it is then quiet
Only 45h obtains phase-change energy storage capsule after extraction.
The phase-change energy storage capsule being prepared by embodiment 1-4 is added to the PVC product being prepared in PVC product
Performance test is done respectively with the common PVC product for being not added with phase-change energy storage capsule, obtains following test result：
1, room temperature tensile strength performance test
The embodiment 1-4 phase-change energy storage capsules prepared are added to the PVC product that is prepared in PVC product with it is common
PVC product carries out room temperature stretch-proof test respectively.The results are shown in table below：
As seen from the above table, the PVC product and common PVC product of phase-change energy storage capsule are added, tensile strength difference is little,
Illustrate not making PVC product mechanical properties decrease after capsule-type phase-changing energy storage material is added.
2, hardness test
The embodiment 1-4 phase-change energy storage capsules prepared are added to the PVC product that is prepared in PVC product with it is common
PVC product carries out room temperature hardness test respectively.The results are shown in table below：
As seen from the above table, the PVC product and common PVC product of phase-change energy storage capsule are added, flexural strength difference is little,
Illustrate not making PVC product mechanical properties decrease after capsule-type phase-changing energy storage material is added.
3, the measurement of glass transition temperature
The embodiment 1-4 phase-change energy storage capsules prepared are added to the PVC product and common PVC system obtained in PVC product
Product carry out the measurement of glass transition temperature respectively.The results are shown in table below：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Common PVC plank | |
| Glass transition temperature/DEG C | 56 | 48 | 50 | 64 | 78 |
As seen from the above table, the PVC product of phase-change energy storage capsule is added compared with common PVC product, and glass transition temperature is apparent
It reduces, illustrates to play certain phase-change accumulation energy property after capsule-type phase-changing energy storage material is added.
In conclusion the phase-change energy storage capsule that method through the invention is prepared is applied to PVC phase-change accumulation energies building
In material, make PVC phase-changing energy-storing building materials that there is preferable mechanical property, while being also provided with certain phase-change accumulation energy
Matter.
Flyash is used in raw material of the present invention, on the one hand, significantly reduce being produced into for PVC phase-changing energy-storing building materials
On the other hand flyash is rationally recycled, not only solves problem of environmental pollution, while also achieving fly ash highly by this
High-valued utility value.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. it is a kind of using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that include the following steps：
(1) preparation of hollow fly ash grain；
(2) preparation of modified cellulose acetate；
(3) it takes above-mentioned 100-120 parts of hollow fly ash grain to be added in the ethanol solution of excessive odium stearate to carry out at ultrasound
It manages, is filtered material after supersound process；
(4) above-mentioned filtered filter residue is put into above-mentioned modified cellulose acetate solution and is ultrasonically treated, obtained after static, extraction
Phase-change energy storage capsule.
2. it is according to claim 1 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
(1) preparation method of hollow fly ash grain includes the following steps：
At room temperature, grinding is uniform together after flyash and calcium carbonate are weighed in mass ratio, and mixture is then carried out high temperature by a
Calcination；
B is ground after being cooled to room temperature the mixture after above-mentioned high temperature sintering, takes the powder after 200-300 parts of grindings, and
Excessive dilute hydrochloric acid is added to impregnate, is filtered after immersion, by filter residue wash with distilled water, drying, obtain hollow flyash
Grain.
3. it is according to claim 1 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
(2) preparation method of modified cellulose acetate includes the following steps：
(a) at room temperature, coupling agent, initiator, ethyl acetate are weighed in mass ratio to put in the reaction vessel, be added dropwise just pungent
Alcohol after isothermal reaction, takes out reaction solution, rotates, dries to obtain modifying agent；
(b) after cellulose acetate and modifying agent being mixed evenly in mass ratio, melt modification is carried out, is obtained after cooling modified
Cellulose acetate.
4. it is according to claim 1 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
(3) mass fraction of the ethanol solution of odium stearate is 7-13% in, and the time of supersound process is 2-3h.
5. it is according to claim 1 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
(4) sonication treatment time is 25-36min, quiescent time 45-50h in.
6. it is according to claim 2 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
Flyash and calcium carbonate mass ratio are 100-150 in a:60-80.
7. it is according to claim 2 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
The temperature of a high temperature calcinations is 1700-2000 DEG C, the scorching hot time is 6-8h.
8. it is according to claim 2 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
Powder diameter after being ground in b is 50-100 mesh；The mass fraction of dilute hydrochloric acid is 10-15%, soaking time 22-26h, drying
Temperature be 100-120 DEG C.
9. it is according to claim 3 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
(a) coupling agent in, initiator, ethyl acetate mass ratio be 8-10:0.3-0.5:80, the n-octyl alcohol amount of addition is 8-10 parts,
The isothermal reaction time is 1.7-2.4h.
10. it is according to claim 3 using coal ash for manufacturing for the method for phase-change energy storage capsule, which is characterized in that the step
Suddenly the mass ratio of cellulose acetate and modifying agent is 120-150 in (b):8-12.
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| CN201711274200.6A CN108300420A (en) | 2017-12-06 | 2017-12-06 | A method of using coal ash for manufacturing for phase-change energy storage capsule |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394805A (en) * | 2002-06-27 | 2003-02-05 | 复旦大学 | Preparation of cancrinite zeolite hollow microsphere by using fly-ash hollow microbead |
| CN1450141A (en) * | 2003-04-10 | 2003-10-22 | 同济大学 | Phase-changing energy-storage composite material for building and preparation process thereof |
| CN101037498A (en) * | 2006-03-17 | 2007-09-19 | 上海杰事杰新材料股份有限公司 | Microencapsulation reinforced inorganic particle and preparation method thereof |
| CN101108961A (en) * | 2006-07-19 | 2008-01-23 | 华子昂 | Highly effective thermoregulation material and method for producing the same |
| CN102925114A (en) * | 2012-11-02 | 2013-02-13 | 山西大学 | Fly ash phase change microbead, preparation method thereof and application |
-
2017
- 2017-12-06 CN CN201711274200.6A patent/CN108300420A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394805A (en) * | 2002-06-27 | 2003-02-05 | 复旦大学 | Preparation of cancrinite zeolite hollow microsphere by using fly-ash hollow microbead |
| CN1450141A (en) * | 2003-04-10 | 2003-10-22 | 同济大学 | Phase-changing energy-storage composite material for building and preparation process thereof |
| CN101037498A (en) * | 2006-03-17 | 2007-09-19 | 上海杰事杰新材料股份有限公司 | Microencapsulation reinforced inorganic particle and preparation method thereof |
| CN101108961A (en) * | 2006-07-19 | 2008-01-23 | 华子昂 | Highly effective thermoregulation material and method for producing the same |
| CN102925114A (en) * | 2012-11-02 | 2013-02-13 | 山西大学 | Fly ash phase change microbead, preparation method thereof and application |
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Application publication date: 20180720 |