CN101144006A - Phase-change energy-storage mortar and preparation method thereof - Google Patents
Phase-change energy-storage mortar and preparation method thereof Download PDFInfo
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- CN101144006A CN101144006A CNA2007100472159A CN200710047215A CN101144006A CN 101144006 A CN101144006 A CN 101144006A CN A2007100472159 A CNA2007100472159 A CN A2007100472159A CN 200710047215 A CN200710047215 A CN 200710047215A CN 101144006 A CN101144006 A CN 101144006A
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Abstract
The invention relates to a phase transition energy-storage mortar, in which base material contains cement material, fine aggregate, additive and water, and filler (porous graphite matrix phase transition energy-storage composite material micropowder). The porous graphite matrix phase transition energy-storage composite material micropowder accounts for 5-30wt percent of total and consists of porous graphite micropowder and organic phase transition material; wherein the porous graphite micropowder is prepared by intercalation, expansion, compression and grinding of natural flake graphite, and the organic phase transition material includes crystallization straight chain fatty acid, alkane, esters and one or more of the mixture. The range of the weight ratio of the mortar base material is that cement: fine aggregate: water: additive is equal to 1:1.5-2.5:0.3-0.5:0.005-0.03. The phase transition energy-storage mortar has advantages of low price, control of temperature fluctuation in buildings and decrease of building energy consumption.
Description
Technical field
The present invention relates to the energy-storage composite material field, be specially a kind of phase-change energy-storage mortar and preparation method thereof.
Background technology
The exhaustion crisis of fossil energy and problem of environmental pollution more and more are subjected to common people and pay close attention to, and improving energy use efficiency and developing renewable energy source is the important topic that the mankind face.Utilize phase change material (Phase ChangeMaterials, PCMs) latent heat of phase change is realized the storage and the utilization of energy, helping to improve efficiency and exploitation renewable energy source, is very active forward position research direction in energy science and the material science in recent years.In phase transition process, phase-changing energy storage material and environment carry out energy exchange, reach the purpose of control environment temperature and energy utilization.Compare with the sensible heat energy storage, phase-change accumulation energy has that energy storage density height, volume are small and exquisite, temperature control is constant, energy-saving effect significantly, the transformation temperature range of choice is wide, be easy to advantage such as control, has important use value and wide prospect in various fields such as aerospace, sun power utilization, heating and air-conditioning, power supply system optimization, engineering in medicine, military engineering, accumulation of heat building and extreme environment clothes.
Building is one of field of the tool using value of phase-change energy-storage composite material./ 3rd of a society's primary energy source total flow is used for building field, improves the building field energy use efficiency, reduces building energy consumption, all has remarkable economic efficiency and social influence for entire society's save energy and protection environment.For this reason, the development trend of ecotecture has appearred in human society after entering 21 century, and it is one of important means of Sustainable development.In ecotecture, phase-change energy-storage composite material can help to utilize renewable energy sources such as sun power, season thermal gradient energy, effectively reduce the buildings fluctuations in indoor temperature, reduce various thermal hardwares, reduce energy expenditure and healthy comfortable indoor environment is provided, can utilize ebb electric power, peak load shifting, reduction power consumption, alleviate power tense.
Especially in recent years, along with the fast development of Highrise buildings, adopt light building material in a large number.But the thermal capacitance of light building material is lower, is unfavorable for stabilizing fluctuations in indoor temperature, is the effective ways that address this problem and add phase change material therein.
Phase-change energy-storage composite material very promising application mode in building field is that phase change material and existing general material of construction is compound, being about to phase change material is stored in the material of construction, make these material of construction have the dual-use function of load-bearing and energy storage simultaneously, become structure one function integration material of construction.Adopting such multi-use architecture material, when increasing function for building, need not occupying volume External building space, reduce building cost, is that P/C is than higher New Building Materials.
The microencapsulated phase change material that has the German BASF of employing to produce in the market prepares the technology of phase-change energy-storage mortar, but its cost is very high, is of limited application.
Summary of the invention
At the requirement of fields such as building energy conservation to phase-changing energy storage material, the object of the invention is to provide the phase-change energy-storage mortar that a kind of cost is low, prepare convenience, applied range.Specifically be, the mortar material that adopts preparations such as porous graphite base phase-change energy-storage composite material micro mist, cement material, fine aggregate, admixture to have the phase-change accumulation energy function, its preparation method is as follows.
The preparation of porous graphite base phase-change energy-storage composite material micro mist.Porous graphite base phase-change energy-storage composite material micro mist mainly is made of porous graphite micro mist and organic phase change material, and wherein the porous graphite micro mist is through intercalation, expanded, compression with pulverize supervisor and be prepared from by natural flake graphite.Organic phase change material comprises organic materialss such as crystallinity straight chain fatty acid, alkane, ester class and composition thereof.In preparation process, at first, prepare a certain amount of porous graphite micro mist by above-mentioned preparation method.By predetermined formula rate, take by weighing porous graphite micro mist and selected organic phase change material, then as the butyl stearate organic phase change material.Accurately two kinds of material mixing after the weighing fully stir compound together.In order to allow organic phase change material can more fully under liquid state, be penetrated in the hole of porous graphite micro mist, our two kinds of materials after will mixing were placed in the baking oven that is higher than the organic phase change material transformation temperature constant temperature more than 24 hours, obtained evenly porous graphite base phase-change energy-storage composite material micro mist fully of absorption.More detailed preparation method is referring to patent of invention ZL200410052870.X.
Phase-change energy-storage mortar.Adopting porous graphite base phase-change energy-storage composite material micro mist is filler, prepares phase-change energy-storage mortar with formation body materials such as cement material, fine aggregate, admixture and water.Its concrete preparation process is: at first cement that will take by weighing in proportion and fine aggregate are poured in the agitator kettle, start the stirrer dry mixing, 1～2 minute dry mixing time, add then and be pre-mixed uniform water and admixture, restir 2～3 minutes, at last accurate load weighted porous graphite base phase-change energy-storage composite material micro mist is poured in the above-mentioned stirring thing, continued to stir 2～3 minutes, to mixing.To stir thing then and pour among the shaping dies, treat after the 24h that sample sclerosis form removal afterwards promptly obtains the phase-change accumulation energy composite mortar.
Through a large amount of experiments, for making mortar matrix and porous graphite base phase-change energy-storage composite material micro mist have good consistency, the optimum mix scope of mortar matrix is a cement: fine aggregate: water: admixture=1: 1.5～2.5: 0.3～0.5: 0.005～0.03, cement material must adopt ordinary Portland cement or silicate cement, admixture must adopt Lignins water reducer or polycarboxylic acid series high efficiency water reducing agent, fine aggregate must adopt standard sand or the medium sand of fineness modulus between 2.3～3.0, and porous graphite base phase-change energy-storage composite material micro mist accounts for the weight ratio of whole phase-change energy-storage mortar must be less than 30wt%.
That phase-change energy-storage mortar of the present invention has is cheap, can control the buildings fluctuations in indoor temperature, reduce advantages such as building energy consumption.
Description of drawings
Fig. 1 is that porous graphite base phase-change energy-storage composite material micro mist volume is the DSC curve of 10% phase-change energy-storage mortar;
Fig. 2 is that porous graphite base phase-change energy-storage composite material micro mist volume is the DSC curve of 20% phase-change energy-storage mortar;
Fig. 3 is that porous graphite base phase-change energy-storage composite material micro mist volume is the DSC curve of 30% phase-change energy-storage mortar.
Embodiment
Embodiment 1
Adopt conch board 425 ordinary Portland cements, standard sand, tap water, high efficiency water reducing agent, porous graphite base phase-change energy-storage composite material micro mist to prepare phase-change energy-storage mortar.Wherein porous graphite base phase-change energy-storage composite material micro mist is by butyl stearate and porous graphite micro mist, mass ratio is 5: 1, be phase change material account for the matrix material total mass 83%, high efficiency water reducing agent adopts the ADVA152 polycarboxylic acid series high efficiency water reducing agent that Co., Ltd produces among the GRACE.The proportioning of mortar matrix is a cement: sand: water: admixture=1: 2: 0.4: 0.01.Components in proportions described in the present invention and content are weight ratio.To take by weighing a certain amount of cement in proportion, standard sand is poured in the agitator kettle, starts stirrer dry mixing 1 minute.Add afterwards and be pre-mixed uniform water and high efficiency water reducing agent, stir after two minutes, 10% porous graphite base phase-change energy-storage composite material micro mist is poured into down in the mortar, continue to stir after 2 minutes and pour among the shaping dies, treat after the 24h that sample sclerosis form removal afterwards promptly obtains the phase-change accumulation energy composite mortar.The DSC experiment is carried out in sampling from mortar specimen.What DSC experiment was adopted is that the Q100 type differential scanning calorimeter that U.S. TA instrument company produces is measured, and test is carried out in the nitrogen environment under normal pressure, and the sample temperature-rise period rises to 30 ℃ from-10 ℃, and temperature rise rate is 5 ℃/min; Temperature-fall period is reduced to-10 ℃ from 30 ℃, and rate of temperature fall is 5 ℃/min.Fig. 1 is its DSC curve.
Embodiment 2
Adopt conch board 425 ordinary Portland cements, standard sand, tap water, high efficiency water reducing agent, porous graphite base phase-change energy-storage composite material micro mist to prepare phase-change energy-storage mortar.Wherein porous graphite base phase-change energy-storage composite material micro mist is by butyl stearate and porous graphite micro mist, mass ratio is 5: 1, be phase change material account for the matrix material total mass 83%, high efficiency water reducing agent adopts the ADVA152 polycarboxylic acid series high efficiency water reducing agent that Co., Ltd produces among the GRACE.The proportioning of mortar matrix is a cement: sand: water: admixture=1: 2: 0.4: 0.02.To take by weighing a certain amount of cement in proportion, standard sand is poured in the agitator kettle, starts stirrer dry mixing 1 minute.Add afterwards and be pre-mixed uniform water and high efficiency water reducing agent, stir after two minutes, 20% porous graphite base phase-change energy-storage composite material micro mist is poured into down in the mortar, continue to stir after 2 minutes and pour among the shaping dies, treat after the 24h that sample sclerosis form removal afterwards promptly obtains the phase-change accumulation energy composite mortar.The DSC experiment is carried out in sampling from mortar specimen.What DSC experiment was adopted is that the Q100 type differential scanning calorimeter that U.S. TA instrument company produces is measured, and test is carried out in the nitrogen environment under normal pressure, and the sample temperature-rise period rises to 30 ℃ from-10 ℃, and temperature rise rate is 5 ℃/min; Temperature-fall period is reduced to-10 ℃ from 30 ℃, and rate of temperature fall is 5 ℃/min.Fig. 2 is its DSC curve.
Embodiment 3
Adopt conch board 425 ordinary Portland cements, standard sand, tap water, high efficiency water reducing agent, porous graphite base phase-change energy-storage composite material micro mist to prepare phase-change energy-storage mortar.Wherein porous graphite base phase-change energy-storage composite material micro mist is by butyl stearate and porous graphite micro mist, mass ratio is 5: 1, be phase change material account for the matrix material total mass 83%, high efficiency water reducing agent adopts the ADVA152 polycarboxylic acid series high efficiency water reducing agent that Co., Ltd produces among the GRACE.The proportioning of mortar matrix is a cement: sand: water: admixture=1: 2: 0.4: 0.025.To take by weighing a certain amount of cement in proportion, standard sand is poured in the agitator kettle, starts stirrer dry mixing 1 minute.Add afterwards and be pre-mixed uniform water and high efficiency water reducing agent, stir after two minutes, 30% porous graphite base phase-change energy-storage composite material micro mist is poured into down in the mortar, continue to stir after 2 minutes and pour among the shaping dies, treat after the 24h that sample sclerosis form removal afterwards promptly obtains the phase-change accumulation energy composite mortar.The DSC experiment is carried out in sampling from mortar specimen.What DSC experiment was adopted is that the Q100 type differential scanning calorimeter that U.S. TA instrument company produces is measured, and test is carried out in the nitrogen environment under normal pressure, and the sample temperature-rise period rises to 30 ℃ from-10 ℃, and temperature rise rate is 5 ℃/min; Temperature-fall period is reduced to-10 ℃ from 30 ℃, and rate of temperature fall is 5 ℃/min.Fig. 3 is its DSC curve.
By Fig. 1 to Fig. 3 as can be seen, along with the increase of porous graphite base phase-change energy-storage composite material micro mist content in mortar, the heat storage capacity of mortar (Δ H) is linear to be increased.
Claims (7)
1. phase-change energy-storage mortar, wherein body material contains cement material, fine aggregate, admixture and water, and filler, is characterised in that filler is a porous graphite base phase-change energy-storage composite material micro mist.
2. phase-change energy-storage mortar as claimed in claim 1 is characterised in that porous graphite base phase-change energy-storage composite material micro mist is made of porous graphite micro mist and organic phase change material; Wherein the porous graphite micro mist is to be prepared from through intercalation, expanded, compression and pulverizing program by natural flake graphite, and organic phase change material comprises one or more in crystallinity straight chain fatty acid, alkane, ester class and composition thereof.
3. phase-change energy-storage mortar as claimed in claim 1 or 2, the granularity that is characterised in that porous graphite base phase-change energy-storage composite material micro mist is between 5～50 micrometer ranges; This particulate accounts for the 5-30wt% of total amount.
4. phase-change energy-storage mortar as claimed in claim 1 or 2 is characterised in that the cooperation part by weight scope of mortar matrix material is a cement: fine aggregate: water: admixture=1: 1.5～2.5: 0.3～0.5: 0.005～0.03.
5. phase-change energy-storage mortar as claimed in claim 3 is characterised in that the cooperation part by weight scope of mortar matrix material is a cement: fine aggregate: water: admixture=1: 1.5～2.5: 0.3～0.5: 0.005～0.03.
6. phase-change energy-storage mortar as claimed in claim 1 or 2, be characterised in that cement material adopts ordinary Portland cement or silicate cement, admixture adopts Lignins water reducer or polycarboxylic acid series high efficiency water reducing agent, and fine aggregate must adopt standard sand or the medium sand of fineness modulus between 2.3～3.0.
7. prepare the method for the described arbitrary phase-change energy-storage mortar of claim 1-6, comprising:
(a) cement that will take by weighing in proportion and fine aggregate are poured in the agitator kettle, start the stirrer dry mixing, 1～2 minute dry mixing time,
(b) adding is pre-mixed uniform water and admixture, restir 2～3 minutes,
(c) accurate load weighted porous graphite base phase-change energy-storage composite material micro mist is poured into down in the above-mentioned stirring thing, continue to be stirred 2～3 minutes, to mixing,
(d) will stir thing and pour among the shaping dies, treat after the 24h that sample sclerosis form removal afterwards promptly obtains the phase-change accumulation energy composite mortar.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844893A (en) * | 2010-03-31 | 2010-09-29 | 南京大学 | Energy storage building material and preparation method thereof |
| CN101913814A (en) * | 2010-08-18 | 2010-12-15 | 江苏丰彩新型建材有限公司 | Functional phase-change energy storage mortar and preparation method thereof |
| CN103771808A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Phase change thermal storage cement mortar containing rubber powder and preparation method thereof |
| CN104230266A (en) * | 2014-09-05 | 2014-12-24 | 陈浩 | High-strength dry-mixed mortar stirring method |
| CN105601203A (en) * | 2015-12-28 | 2016-05-25 | 湖北工业大学 | Phase change energy storage aggregate cement based composite material and preparation process thereof |
| CN109020397A (en) * | 2018-09-10 | 2018-12-18 | 成都宏基建材股份有限公司 | A kind of phase-change energy-storage mortar and preparation method thereof |
| CN110218068A (en) * | 2019-06-26 | 2019-09-10 | 贵州大学 | The preparation method of half water ardealite cement base phase-change accumulation energy gravity flowing levelling mortar of ground |
| CN110451902A (en) * | 2019-09-10 | 2019-11-15 | 高永明 | A kind of phase-change accumulation energy gravity flowing levelling mortar manufacturing method |
| CN115340852A (en) * | 2022-08-16 | 2022-11-15 | 浙江大学嘉兴研究院 | Mixed-soil heat storage material, manufacturing method of energy storage component and solar heating system |
-
2007
- 2007-10-19 CN CNA2007100472159A patent/CN101144006A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844893A (en) * | 2010-03-31 | 2010-09-29 | 南京大学 | Energy storage building material and preparation method thereof |
| CN101913814A (en) * | 2010-08-18 | 2010-12-15 | 江苏丰彩新型建材有限公司 | Functional phase-change energy storage mortar and preparation method thereof |
| CN103771808A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Phase change thermal storage cement mortar containing rubber powder and preparation method thereof |
| CN103771808B (en) * | 2012-10-23 | 2015-10-21 | 中国石油化工股份有限公司 | A kind of phase-transition heat-storage sand-cement slurry containing rubber powder and preparation method thereof |
| CN104230266A (en) * | 2014-09-05 | 2014-12-24 | 陈浩 | High-strength dry-mixed mortar stirring method |
| CN105601203A (en) * | 2015-12-28 | 2016-05-25 | 湖北工业大学 | Phase change energy storage aggregate cement based composite material and preparation process thereof |
| CN109020397A (en) * | 2018-09-10 | 2018-12-18 | 成都宏基建材股份有限公司 | A kind of phase-change energy-storage mortar and preparation method thereof |
| CN110218068A (en) * | 2019-06-26 | 2019-09-10 | 贵州大学 | The preparation method of half water ardealite cement base phase-change accumulation energy gravity flowing levelling mortar of ground |
| CN110218068B (en) * | 2019-06-26 | 2022-02-18 | 贵州大学 | Preparation method of semi-hydrated phosphogypsum cement-based phase-change energy-storage self-leveling mortar for ground |
| CN110451902A (en) * | 2019-09-10 | 2019-11-15 | 高永明 | A kind of phase-change accumulation energy gravity flowing levelling mortar manufacturing method |
| CN115340852A (en) * | 2022-08-16 | 2022-11-15 | 浙江大学嘉兴研究院 | Mixed-soil heat storage material, manufacturing method of energy storage component and solar heating system |
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