CN102719228A - Supporting immobilization method of organic phase-change material by opoka - Google Patents
Supporting immobilization method of organic phase-change material by opoka Download PDFInfo
- Publication number
- CN102719228A CN102719228A CN2012102011976A CN201210201197A CN102719228A CN 102719228 A CN102719228 A CN 102719228A CN 2012102011976 A CN2012102011976 A CN 2012102011976A CN 201210201197 A CN201210201197 A CN 201210201197A CN 102719228 A CN102719228 A CN 102719228A
- Authority
- CN
- China
- Prior art keywords
- opoka
- change material
- organic phase
- phase
- phase change
- 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
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000012782 phase change material Substances 0.000 title abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 38
- 230000008859 change Effects 0.000 claims abstract description 35
- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 claims description 22
- 239000012074 organic phase Substances 0.000 claims description 22
- 229940038384 octadecane Drugs 0.000 claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- -1 polyoxyethylene Polymers 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract 1
- 230000003100 immobilizing effect Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 description 11
- 239000012071 phase Substances 0.000 description 10
- 239000002131 composite material Substances 0.000 description 9
- 230000009466 transformation Effects 0.000 description 7
- 239000007791 liquid phase Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229940057847 polyethylene glycol 600 Drugs 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000005480 straight-chain fatty acid group Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a supporting immobilization method of an organic phase-change material by opoka, and belongs to the field of material science and engineering. The method comprises the following steps of: calcining the opoka; modifying ducts and surface of the calcined opoka with organic matters; supporting and immobilizing the modified opoka to an organic phase-change material to obtain an opoka supported immobilized organic phase-change material with a temperature regulation function. The opoka supported immobilized organic phase-change material prepared by adopting the method has a phase-change temperature between 20 and 30 DEG C and latent heat of phase change more than or equal to 60J/g, little phase-change substances leaks in the phase change process, and the phase-change performance has high stability; and the preparation process is simple, the cost is low, and the practicality is good.
Description
Technical field:
The present invention relates to the fixedly method of organic phase change material of a kind of opoka load, belong to the Materials Science and Engineering field.
Background technology:
Phase-changing energy storage material is meant and can be utilized the material that its great amount of heat energy that when states of matter changes, absorbs (emitting) is used for store energy, be a kind of can natural sense ambient temperature change and change through " phase " attitude come to carry out automatically closed region envrionment temperature adjusting to reach temperature adjustment, constant temperature purpose new energy-saving material.The phase-change accumulation energy temperature control can be used for alleviating energy supply and demand both sides not matching on time, intensity and place; In " peak load shifting ", used heat and the heat recovery of sun power utilization, electric power, and the field such as energy-conservation of industry and covil construction and air-conditioning is with a wide range of applications.
Phase change material with application prospect generally is an organic or inorganic solid-liquid phase change material.This solid-liquid phase change material will have a kind of carrier to hold it in practicality, and its generation " phase " attitude is changed, and when becoming liquid phase by solid phase because of heat absorption, liquid does not ooze out; When becoming solid phase because of heat release, have living space and hold its volumetric expansion by liquid phase.
Therefore, the phase-changing energy storage material that can in engineering, use is a kind of matrix material of load fixed.
In recent years, the scientific research personnel attempts fixing organic solid-liquid phase change material paraffin, Triple Pressed Stearic Acid, capric acid, NSC 6366, Octadecane, hexanaphthene etc. with silicate minerals such as smectite or wilkinite, perlite, attapulgite and zeyssatite, WHITE CARBON BLACK and silica gel, carbon black, expanded graphite, plaster of Paris, ceramic foam, concrete, metallic substance even load.Ru Zhangdong, Wu Keru are matrix with air-settings such as gypsum, cement or hydraulic cementing materials in patent of invention " phase-change energy-storage composite material for building and preparation method thereof " in (03116286.X), and the porous materials such as swelling clay that wherein comprise organic phase change materials such as being loaded with paraffin or butyl stearate gather materials.This invention elder generation employing vacuum infiltration legal system gets phase-change accumulation energy gathers materials, and the universal method with material of construction makes phase-change energy-storage composite material again.The patent of invention of Ding Enyong, Li Guokang " a kind of phase-change energy-storage composite material " (98122251.x) with the composition metal phase change material as the energy storage body; By at least two kinds of phase change material mutual superimposed compositions, on the phase change material top layer respectively by metal with coating or non-metal shell parcel.Open the patent of invention " a kind of phase-change energy-storage composite coating material and preparation method thereof " (200710047217.8) in east, comprise organic macromolecule filming material and phase-change accumulation energy micro mist; Wherein the phase-change accumulation energy micro mist is porous graphite micro mist (being prepared from through operations such as intercalation, expanded and pulverizing natural flake graphite) and organic phase change material formation; Organic phase change material comprises one or more in straight chain fatty acid, alkane, ester class and composition thereof.
The principal element of weighing the phase-change energy-storage composite material application performance is transformation temperature, latent heat, stability and economy.The subject matter that exists based on disclosed loading type phase-change energy-storage composite material before these several standard mesh is: (one) transformation temperature is improper, is higher than people and feels comfortable room temperature range; (2) latent heat of phase change is not high, and a lot of matrix materials do not reach 50J/g; (3) weather resistance is bad, and thermal storage performance descended during the phase change material easy to leak caused using; (4) the carrier cost is higher, and economy is relatively poor.
Opoka is a kind of moisture amorphousness or gelationus active silica, and its main chemical compositions is SiO
2Have characteristics such as light weight, porous and physicochemical property be stable, the aperture mainly concentrates on zero point several nanometers to several nanometers, and specific surface area and pore volume are bigger, and it is better to adsorb fixed performance; It is a kind of natural nano (mesoporous) structure silicoide material.The high-specific surface area of opoka and can improve the charge capacity of phase change material than macropore volume, thus latent heat of phase change improved; The nanometer of opoka (mesoporous) distributes can adsorb fixedly phase transformation material molecule better, prevents its seepage, thereby improves the weather resistance of composite phase-change material; Opoka is the natural silicoide that a kind of reserves are abundant, exploit and process easily, and production cost is lower.
The objective of the invention is the deficiency to present loading type phase-change energy-storage composite material, providing a kind of is the method for immobilization carrier, the organic solid-liquid phase change material of load with the opoka.Not only transformation temperature is suitable for this opoka load fixed organic phase change material, latent heat of phase change is higher, and good stability.
Summary of the invention:
At first opoka is carried out roasting; Again the opoka after the roasting is carried out duct and finishing with organism; Opoka load after will modifying then is organic phase change material fixedly, and a kind of opoka load that promptly obtains having temperature adjustment function is organic phase change material fixedly.
Its process step and parameter are following:
(1) the opoka roasting is with opoka roasting certain hour at a certain temperature, the opoka that obtains having high specific surface area;
(2) duct and finishing add the water back of sizing mixing with the opoka of roasting in the step (1) and carry out finishing with organism, obtain the opoka carrier of duct and finishing;
(3) the fixing organic phase change material of the opoka load of compound duct that step (2) is produced and finishing.
Below be prescription of the present invention and main technique condition.
(1) opoka roasting
250～750 ℃ of maturing temperatures, roasting time 0.5～5.0h.
(2) duct and finishing
The mass concentration of opoka is 10%～30% in the slurry; Modify and use organism to be organic quaternary ammonium salt, consumption is 0.5%～5% of an opoka quality; Modify 30～90 ℃ of temperature, time 1.0～3.0h.
(3) load is fixed
Organic phase change material is the compound of octadecane and whiteruss or the compound of octadecane and polyoxyethylene glycol, and mass ratio is an octadecane: whiteruss=100: 5～50, octadecane: polyoxyethylene glycol=100: 5～60; The mass ratio of the opoka after organic phase change material and organism are modified is 33～100: 100; 30～120 ℃ of load temperatures, time 0.5～4.0h.
Through embodiment the present invention is done further elaboration below, the restriction of the example that protection scope of the present invention does not receive to be lifted.
The opoka load of employing the inventive method preparation is organic phase change material fixedly, 20～30 ℃ of transformation temperatures, and latent heat of phase change >=60J/g, phase change material seldom leaks in the phase transition process, and the interconvertibility stabilizability is high; And preparation technology is simple, and cost is low, and practicality is good.
Embodiment:
Embodiment one:
Get desiccation protein soil 1000g, 400 ℃ of following roasting 2h in retort furnace; Add water 4000mL after being cooled to room temperature, in the temperature controllable retort, behind the furnishing slurries, add the 17.5g cetyl trimethylammonium bromide,, obtain the opoka of duct and finishing at 30 ℃ of following stirring reaction 2h after-filtration, dry under 105 ℃; Opoka and 500g organic phase-change compound (50g whiteruss+450g octadecane) after this modification are placed the temperature controllable retort,, promptly obtain opoka load fixed organic phase change material at 95 ℃ of following stirring reaction 2h.
Embodiment two:
Get desiccation protein soil 1000g, 400 ℃ of following roasting 2h in retort furnace; Be cooled to and add water 4000mL after the room temperature and in the temperature controllable retort, behind the furnishing slurries, add the 17.5g cetyl trimethylammonium bromide, 30 ℃ of following stirring reaction 2h after-filtration, 105 ℃ dry down, obtain the opoka of duct and finishing; Opoka and 500g organic phase change material compound (100g Polyethylene Glycol-600+400g octadecane) after this modification are placed the temperature controllable retort,, promptly obtain opoka load fixed organic phase change material at 95 ℃ of following stirring reaction 2h.
Table 1 is the detected result of embodiment products obtained therefrom.
The check and analysis result of table 1 embodiment sample
| Embodiment | Transformation temperature/℃ | Latent heat of phase change/J/g | Stability [1]/w％ |
| One | 20～25 | 62.09 | 2.43 |
| Two | 26～29 | 67.72 | 2.19 |
Remarks: the mass loss rate of the phase-change energy-storage composite material after [1] 500 cold cycling phase transformation test.
Claims (4)
1. the fixing method of organic phase change material of an opoka load is characterized in that its process step is:
(1) opoka is carried out roasting;
(2) with the opoka after the roasting add water size mixing the back carry out duct and finishing with organic quaternary ammonium salt;
(3) the fixing organic phase change material of the opoka load after will modifying.
2. a kind of opoka load according to claim 1 is the method for organic phase change material fixedly, it is characterized in that 250～750 ℃ of the maturing temperatures of opoka, roasting time 0.5～5.0h.
3. a kind of opoka load according to claim 1 is the method for organic phase change material fixedly, it is characterized in that, the mass concentration of opoka is 10%～30% in the slurry, and the consumption of organic quaternary ammonium salt is 0.5%～5% of an opoka quality; Modify 30～90 ℃ of temperature, time 1.0～3.0h.
4. a kind of opoka load according to claim 1 is the method for organic phase change material fixedly; It is characterized in that; Organic phase change material is the compound of octadecane and whiteruss or the compound of octadecane and polyoxyethylene glycol; Mass ratio is an octadecane: whiteruss=100: 5～50, octadecane: polyoxyethylene glycol=100: 5～60; The mass ratio of the opoka after organic phase change material and organism are modified is 33～100: 100; 30～120 ℃ of load temperatures, time 0.5～4.0h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102011976A CN102719228A (en) | 2012-06-15 | 2012-06-15 | Supporting immobilization method of organic phase-change material by opoka |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102011976A CN102719228A (en) | 2012-06-15 | 2012-06-15 | Supporting immobilization method of organic phase-change material by opoka |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102719228A true CN102719228A (en) | 2012-10-10 |
Family
ID=46945106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102011976A Pending CN102719228A (en) | 2012-06-15 | 2012-06-15 | Supporting immobilization method of organic phase-change material by opoka |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102719228A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450141A (en) * | 2003-04-10 | 2003-10-22 | 同济大学 | Phase-changing energy-storage composite material for building and preparation process thereof |
| CN102199416A (en) * | 2010-03-26 | 2011-09-28 | 中国矿业大学(北京) | Method for preparing organic/inorganic phase change energy storage composite material |
-
2012
- 2012-06-15 CN CN2012102011976A patent/CN102719228A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450141A (en) * | 2003-04-10 | 2003-10-22 | 同济大学 | Phase-changing energy-storage composite material for building and preparation process thereof |
| CN102199416A (en) * | 2010-03-26 | 2011-09-28 | 中国矿业大学(北京) | Method for preparing organic/inorganic phase change energy storage composite material |
Non-Patent Citations (2)
| Title |
|---|
| 刘月; 郑水林; 舒锋; 文明; 熊余: "《热处理对蛋白土粉体性能的影响》", 《中国粉体技术》, vol. 15, no. 3, 30 June 2009 (2009-06-30) * |
| 张东: "《多孔矿物介质对有机相变材料导热性能的影响》", 《矿物岩石》, vol. 27, no. 3, 31 December 2007 (2007-12-31) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102199416B (en) | Method for preparing organic/inorganic phase change energy storage composite material | |
| Rathore et al. | Enhanced thermophysical properties of organic PCM through shape stabilization for thermal energy storage in buildings: A state of the art review | |
| Rathore et al. | Potential of macroencapsulated PCM for thermal energy storage in buildings: A comprehensive review | |
| Gencel et al. | Investigation of physico-mechanical, thermal properties and solar thermoregulation performance of shape-stable attapulgite based composite phase change material in foam concrete | |
| Yu et al. | Preparation and thermophysical performance of diatomite-based composite PCM wallboard for thermal energy storage in buildings | |
| Karaipekli et al. | Development and thermal performance of pumice/organic PCM/gypsum composite plasters for thermal energy storage in buildings | |
| He et al. | A novel polynary fatty acid/sludge ceramsite composite phase change materials and its applications in building energy conservation | |
| Sarı et al. | Fatty acid esters-based composite phase change materials for thermal energy storage in buildings | |
| Xu et al. | Paraffin/diatomite composite phase change material incorporated cement-based composite for thermal energy storage | |
| CN103509526B (en) | Porous base phase-change thermal storage particle and preparation method thereof | |
| Qiao et al. | Thermal performance analysis of a thermal enhanced form-stable composite phase change material with aluminum nitride | |
| Qin et al. | Novel metal-organic framework (MOF) based phase change material composite and its impact on building energy consumption | |
| Shi et al. | Lightweight mortar with paraffin/expanded vermiculite-diatomite composite phase change materials: Development, characterization and year-round thermoregulation performance | |
| CN105647482B (en) | A kind of ternary aliphatic acid/modified expanded vermiculite composite phase-change energy storage material | |
| CN104944819B (en) | A kind of phase-change accumulation energy aggregate and preparation method thereof | |
| CN102531506A (en) | Gypsum-based paraffin phase-change energy-storage wallboard and preparation method thereof | |
| CN102531550A (en) | Poly fatty acid shape-stabilized phase change material and preparation method thereof | |
| CN102827583A (en) | Phase change composite material and preparation method thereof | |
| Gu et al. | Enhanced thermal properties and lab-scale thermal performance of polyethylene glycol/modified halloysite nanotube form-stable phase change material cement panel | |
| CN105586012B (en) | A kind of aliphatic acid/PERFORMANCE OF MODIFIED VERMICULITE composite phase-change energy storage material and preparation method thereof | |
| CN106867466B (en) | Method for synthesizing inorganic phase change energy storage material by using fly ash and hydrated inorganic salt | |
| Fan et al. | Fabrication and comprehensive analysis of expanded perlite impregnated with myristic acid-based phase change materials as composite materials for building thermal management | |
| Atinafu et al. | Thermoconductive n-alkane enables ultra-high shape/thermal stability, durability, and ambient thermal energy harvesting | |
| CN111004011A (en) | Magnesium cement phase-change building material and preparation method thereof | |
| CN115724630A (en) | Phase-change energy-storage plastering mortar and preparation method 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: 20121010 |