CN102432258A - Shape-stabilized phase change energy storage material for building and preparation method thereof - Google Patents
Shape-stabilized phase change energy storage material for building and preparation method thereof Download PDFInfo
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- CN102432258A CN102432258A CN2011102563394A CN201110256339A CN102432258A CN 102432258 A CN102432258 A CN 102432258A CN 2011102563394 A CN2011102563394 A CN 2011102563394A CN 201110256339 A CN201110256339 A CN 201110256339A CN 102432258 A CN102432258 A CN 102432258A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 77
- 239000011232 storage material Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000012782 phase change material Substances 0.000 claims abstract description 54
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 14
- 229930195729 fatty acid Natural products 0.000 claims abstract description 14
- 239000000194 fatty acid Substances 0.000 claims abstract description 14
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 22
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 16
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims description 16
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000010440 gypsum Substances 0.000 claims description 10
- 229910052602 gypsum Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 claims description 8
- 239000005639 Lauric acid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 150000004683 dihydrates Chemical class 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 16
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract 2
- 239000004566 building material Substances 0.000 abstract 1
- CORTZJMILBLCKC-UHFFFAOYSA-N decanoic acid;dodecanoic acid Chemical compound CCCCCCCCCC(O)=O.CCCCCCCCCCCC(O)=O CORTZJMILBLCKC-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 44
- 150000002632 lipids Chemical class 0.000 description 33
- 150000001875 compounds Chemical class 0.000 description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 239000012071 phase Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000009466 transformation Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- -1 carbon powder lipid Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 206010011732 Cyst Diseases 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a shape-stabilized phase change energy storage material for building and a preparation method thereof. The material provided by the invention comprises components of: by weight, 70-85% of a composite phase change energy storage material with its melting point being 18-30 DEG C and 15-30% of gesso. The composite phase change energy storage material with its melting point being 18-30 DEG C is composed of a porous matrix and a mixed fatty acid phase change material, wherein the mass ratio of the porous matrix to the mixed fatty acid phase change material is 1:4-1:6. At the temperature of 60-80 DEG C, the porous matrix is added in the molten lauric acid-capric acid mixed fatty acid to prepare a composite phase change material. Then, gesso is mixed with the composite phase change material to prepare a shape-stabilized fatty acid phase change energy storage material with a more stable adsorption property. The prepared shape-stabilized phase change energy storage material has good thermal conductivity, good adsorption stability and good material plasticity, will not cause seepage at high temperature, is easy to mix with a building material, and has a good application prospect.
Description
Technical field
The present invention relates to the composite phase-change energy storage material technical field, relate in particular to a kind of typing phase-changing energy storage material for building and preparation method thereof.
Background technology
Phase change material (PCM) is meant and can issues the biomass phase-state change at specified temp or TR (transformation temperature); Be accompanied by the phase transition process absorption or emit a large amount of latent heats of phase change; Phase change material is applied in the material of construction; Utilize the storage and the utilization of the latent heat of phase change realization energy of phase change material, can reach and reduce the air-conditioning system energy consumption, improve the purpose of indoor hot comfort.Just because of this specific character of phase change material, phase change energy storage technology has become Materials science, popular research topic of building energy saving field.
The fatty acid phase change material is as a kind of organic phase change material, and it is the same with the paraffin class phase change material, has higher melting enthalpy, less solid-liquid phase change circulation rate of expansion; Condensate depression is little and do not have phenomenon of phase separation in the phase transition process, has premium propertiess such as good thermostability and chemicalstability, but when many single lipid acid use as phase change material; Because transformation temperature is higher, be difficult to adapt to the performance requriements of low temperature heat reservoir, therefore; Often the lipid acid phase change material is carried out consolute and handle, form binary or polynary eutectic system, reduce the fusing point of material; Obtain temperature of fusion a wider range, the phase change material of stable performance makes it to obtain better application.Pure fatty acid often exists thermal conductivity lower as phase change material, the shortcoming that thermal conduction is slower, the unstable that can cause architectural exterior-protecting construction to conduct heat.Therefore, often that the lipid acid phase change material is mutually compound with other materials such as inorganic porous material, form the typing phase change material.The typing phase-changing energy storage material is can keep solid shape through phase change material and carrier matrix being combined, forming on a kind of external form, has the phase change material of immobility.The typing phase change material in phase transition process in phase transition process shape can remain unchanged; Need not encapsulation in use; Non-leakage; Greatly reduce the packaging cost and the difficulty of phase change heat storage system, and the typing phase change material of some excellent performance can also directly contact with heat-transfer medium, heat exchange efficiency is greatly improved.
The preparation method of typing phase-changing energy storage material mainly contains following several kinds: (1) physisorphtion; Promptly adsorb the prepared typing phase change material of liquid operation material as matrix with porous medium; (2) melt-blending process; Utilize the consistency of operation material and carrier matrix, mix after the fusion and process the uniform energy storage material of composition.(3) micro encapsulation, adopting different microencapsulation technologies that phase change material is encapsulated in macromolecular materials such as Vilaterm, polyureas, urea-formaldehyde resin is in the microcapsule of cyst material, forms particle diameter at micron-sized phase-change material micro-capsule particle.(4) compacting sintering method is mainly used in preparation high-temperature shaping phase change material.In the comparison through above technology, physisorphtion preparation technology is simple, and preparation cost is lower; Be suitable for preparing typing phase-changing energy storage material for building, at present more physisorphtion adopts pearlstone, and expanded graphite, wilkinite etc. are as the absorption carrier of phase change material; Though have absorption property preferably; But often exist frangible, shortcoming such as typing phase change material absorption stability is relatively poor, and lack to material thermal conductivity can test.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology simple, stable performance, the typing phase-changing energy storage material for building with good heat conductive performance, another object of the present invention provides the preparation method of above-mentioned materials.
Technical scheme of the present invention is: a kind of typing phase-changing energy storage material for building; The quality percentage composition of its component and each ingredients constitute typing phase-change energy-storage composite material is distinguished as follows: fusing point is 18-30 ℃ composite phase-change energy storage material 70-85%, terra alba 15-30%; Wherein fusing point is that 18-30 ℃ composite phase-change energy storage material is made up of porous matrix and mixed fatty acid phase change material, and wherein the mass ratio of porous matrix and mixed fatty acid phase change material is 1: 4-1: 6.
Preferred described mixed fatty acid phase change material is that LAURIC ACID 99 MIN and capric acid are 4 in molar ratio: 6-6: 4 mix.
Preferred described porous matrix is a kind of in active carbon powder, wilkinite or the zeyssatite; The mean particle size of porous matrix is 15-40 μ m; Described terra alba is a kind of in high strength gypsum powder, common building terra alba or the dihydrate gypsum powder; The specific surface area of terra alba is 350-500m
2/ kg.
The present invention also provides the preparation method of above-mentioned typing phase-changing energy storage material; Its concrete steps are under 60-80 ℃ of temperature condition, porous matrix are joined to stir in fused LAURIC ACID 99 MIN and the capric acid mixed fatty acid phase change material prepare composite phase-change energy storage material; Again terra alba and composite phase-change energy storage material are mixed with and obtain typing phase-changing energy storage material for building.
Beneficial effect:
The typing lipid acid phase-changing energy storage material of the present invention's preparation, heat conductivility is good, and it is low as the phase change material heat transfer efficiency separately to have solved lipid acid; The problem that thermal conduction is slower has higher thermal conductivity and good thermostability, can carry out heat exchange with heat-transfer medium fast; Seepage does not take place in lipid acid under comparatively high temps; Have good thermal stability, material plasticity-is good, be easy to and material of construction mixes, and has good practicability.
Description of drawings
Fig. 1 be among the embodiment 1 composite phase-change energy storage material with the typing phase-changing energy storage material the suction exotherm; Fig. 2 is the suction exotherm of embodiment 2 composite phase-change energy storage materials and typing phase-changing energy storage material;
Fig. 3 is the suction exotherm of embodiment 3 composite phase-change energy storage materials and typing phase-changing energy storage material;
Fig. 4 is the suction exotherm of embodiment 4 composite phase-change energy storage materials and typing phase-changing energy storage material;
Wherein-be the suction exotherm of typing phase-changing energy storage material,-----be the suction exotherm of composite phase-change energy storage material.
Embodiment
Further specify the present invention through embodiment below.
Adopt compound phase-changing energy storage material of porous matrix lipid acid and common building terra alba (specific surface area 412m
2/ kg), prepare typing phase-changing energy storage material for building.In the present embodiment; Porous matrix is an active carbon powder; The combined phase-change material mol ratio is a LAURIC ACID 99 MIN: capric acid=6: 4; Transformation temperature is 25.1 ℃, and active carbon powder (median size is 22 μ m) the compound phase-changing energy storage material of lipid acid is through under 60 ℃ temperature condition, and active carbon powder is added in the fused lipid acid; Make active carbon powder and molten fat acid thorough mixing make the compound phase-changing energy storage material of active carbon powder lipid acid through fully stirring, again common building terra alba and composite phase-change energy storage material are mixed with typing lipid acid phase-changing energy storage material.The mass ratio of active carbon powder and compound fat acid is 1: 4; Take by weighing the compound phase change material of 70% porous matrix lipid acid in proportion; 30% common building terra alba stirs under 80 ℃ of temperature condition, makes typing lipid acid phase-change energy-storage composite material for building.Composite phase-change material is as shown in Figure 1 with the suction exotherm of typing phase-changing energy storage material.
Embodiment 2
(specific surface area is 460m to adopt compound phase-changing energy storage material of porous matrix lipid acid and high strength gypsum powder
2/ kg), prepare typing phase-changing energy storage material for building.In the present embodiment; Porous matrix is active carbon powder (median size 33 μ m); The combined phase-change material mol ratio is a LAURIC ACID 99 MIN: capric acid=5: 5; Transformation temperature is 21.8 ℃, and the compound phase-changing energy storage material of active carbon powder lipid acid is through under 60 ℃ temperature condition, and active carbon powder is added in the fused lipid acid; Process makes the compound phase-changing energy storage material of active carbon powder lipid acid after fully stirring and making active carbon powder and molten fat acid thorough mixing, again high strength gypsum powder and composite phase-change energy storage material is mixed with typing lipid acid phase-changing energy storage material.The mass ratio of active carbon powder and compound fat acid is 1: 5, takes by weighing the compound phase change material of 80% porous matrix lipid acid in proportion, and 20% high strength gypsum powder stirs under 70 ℃ of temperature condition, makes typing lipid acid phase-change energy-storage composite material.Composite phase-change material is as shown in Figure 2 with the suction exotherm of typing phase-changing energy storage material.
Embodiment 3
Adopt compound phase-changing energy storage material of porous matrix lipid acid and dihydrate gypsum powder (specific surface area 370m
2/ kg), prepare typing phase-changing energy storage material for building.In the present embodiment; Porous matrix is diatomite powder (median size 18 μ m); The combined phase-change material mol ratio is a LAURIC ACID 99 MIN: capric acid=6: 4; Transformation temperature is 25.1 ℃, and the compound phase-changing energy storage material of diatomite powder lipid acid is through under 80 ℃ temperature condition, and diatomite powder is added in the fused lipid acid; Process makes the compound phase-changing energy storage material of diatomite powder lipid acid after fully stirring and making diatomite powder and molten fat acid thorough mixing, again dihydrate gypsum powder and composite phase-change energy storage material is mixed with typing lipid acid phase-changing energy storage material.The mass ratio of diatomite powder and compound fat acid is 1: 4, takes by weighing the compound phase change material of 70% porous matrix lipid acid in proportion, and 30% dihydrate gypsum powder stirs under 80 ℃ of temperature condition, makes typing lipid acid phase-change energy-storage composite material.Composite phase-change material is as shown in Figure 3 with the suction exotherm of typing phase-changing energy storage material.
Embodiment 4
Adopt compound phase-changing energy storage material of porous matrix lipid acid and common building terra alba (specific surface area 393m
2/ kg), prepare typing phase-change energy-storage composite material for building.In the present embodiment; Porous matrix is diatomite powder (median size 21 μ m); The combined phase-change material mol ratio is a LAURIC ACID 99 MIN: capric acid=4: 6; Transformation temperature is 20.2 ℃, and the compound phase-changing energy storage material of diatomite powder lipid acid is through under 60 ℃ temperature condition, and diatomite powder is added in the fused lipid acid; Process makes the compound phase-changing energy storage material of diatomite powder lipid acid after fully stirring and making diatomite powder and molten fat acid thorough mixing, again terra alba and composite phase-change energy storage material is mixed with typing lipid acid phase-changing energy storage material.The mass ratio of diatomite powder and compound fat acid is 1: 6, claims 85% porous matrix lipid acid compound phase change material in proportion, and 15% common building terra alba stirs under 70 ℃ of temperature condition, makes typing lipid acid phase-change energy-storage composite material.Composite phase-change material is as shown in Figure 4 with the suction exotherm of typing lipid acid phase-changing energy storage material.
From Fig. 1, Fig. 2, composite phase-change material can find out that with typing phase change material suction exotherm the typing phase change material is compared with composite phase-change material has temperature rate faster among Fig. 3 and Fig. 4; Thermal conduction rate is very fast, can carry out heat exchange with heat-transfer medium fast, and it is low to have solved lipid acid phase change material thermal conductivity; Heat conduction speed is slow relatively; The problem that heat transfer efficiencies is low, material thermal conductivity can be good, and thermostability and plasticity-all are superior to composite phase-change material.
The above; Be merely embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any those of ordinary skill in the art are in the technical scope that the present invention disclosed, and variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (5)
1. typing phase-changing energy storage material for building, the quality percentage composition of its component and each ingredients constitute typing phase-change energy-storage composite material be respectively as follows: fusing point is 18-30 ℃ composite phase-change energy storage material 70-85%, terra alba 15-30%; Wherein fusing point is that 18-30 ℃ composite phase-change energy storage material is made up of porous matrix and mixed fatty acid phase change material, and wherein the mass ratio of porous matrix and mixed fatty acid phase change material is 1: 4-1: 6.
2. typing phase-changing energy storage material for building according to claim 1, it is characterized in that described mixed fatty acid phase change material is that LAURIC ACID 99 MIN and capric acid are 4 in molar ratio: 6-6: 4 mix.
3. typing phase-changing energy storage material for building according to claim 1 is characterized in that described porous matrix is a kind of in active carbon powder, wilkinite or the zeyssatite; The mean particle size of porous matrix is 15-40 μ m.
4. typing phase-changing energy storage material for building according to claim 1 is characterized in that described terra alba is a kind of in high strength gypsum powder, common building terra alba or the dihydrate gypsum powder; The specific surface area of terra alba is 350-500m
2/ kg.
5. method for preparing typing phase-changing energy storage material as claimed in claim 1; Its concrete steps are under 60-80 ℃ of temperature condition, porous matrix are joined to stir in fused LAURIC ACID 99 MIN and the capric acid mixed fatty acid phase change material prepare composite phase-change energy storage material; Again terra alba and composite phase-change energy storage material are mixed with and obtain typing phase-changing energy storage material for building.
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| CN103087682A (en) * | 2013-01-31 | 2013-05-08 | 北京大学 | Composite shape-stabilized phase change material with light absorption and conductive properties and preparation method thereof |
| CN104152114A (en) * | 2014-07-08 | 2014-11-19 | 北京化工大学 | Preparation method of gypsum and clay composite phase-change energy storing material |
| CN105860936A (en) * | 2016-04-08 | 2016-08-17 | 吉林建筑大学 | Graphene oxide disperse composite phase-change energy storage microcapsules and preparation method |
| CN106082921A (en) * | 2016-06-30 | 2016-11-09 | 云南瑞沃思新能源科技有限公司 | A kind of New-type phase change energy-storage gypsum plate |
| CN106085367A (en) * | 2016-06-17 | 2016-11-09 | 航天材料及工艺研究所 | A kind of flexible fixed phase change heat-barrier material and preparation method thereof |
| CN106167363A (en) * | 2016-08-05 | 2016-11-30 | 轩重建筑节能科技（上海）有限公司 | A kind of flyash phase-changing energy storage material for green building and preparation method thereof |
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| CN104152114B (en) * | 2014-07-08 | 2019-03-29 | 北京化工大学 | The preparation method of gypsum clay composite phase-change energy-storing material |
| CN104152114A (en) * | 2014-07-08 | 2014-11-19 | 北京化工大学 | Preparation method of gypsum and clay composite phase-change energy storing material |
| CN105860936A (en) * | 2016-04-08 | 2016-08-17 | 吉林建筑大学 | Graphene oxide disperse composite phase-change energy storage microcapsules and preparation method |
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