CN104944819B - A kind of phase-change accumulation energy aggregate and preparation method thereof - Google Patents
A kind of phase-change accumulation energy aggregate and preparation method thereof Download PDFInfo
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- CN104944819B CN104944819B CN201510320846.8A CN201510320846A CN104944819B CN 104944819 B CN104944819 B CN 104944819B CN 201510320846 A CN201510320846 A CN 201510320846A CN 104944819 B CN104944819 B CN 104944819B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention provides a kind of method utilizing discarded building steam-pressing aero-concrete to prepare phase-change accumulation energy aggregate, by weight proportioning it is, useless air entrained concrete granule 10 parts, phase-change material 7～10 parts, polymer emulsion 1.7～2.7 parts, steel-making slag powder 4.5～5.5 parts, cement 1.2～1.8 parts, water 2～2.5 parts, plaster of Paris 1.5～2 parts, manganese ground-slag 3～3.8 parts.The phase-change accumulation energy aggregate intensity obtained is high, good with inorganic coagulation material affinity, and phase-change material not easy to leak is durable in use；May be used for preparing mortar, concrete, produce various building block or sheet material etc..
Description
Technical field
The present invention relates to a kind of utilize construction waste steam-pressing aero-concrete for nuclear core backing material prepare phase-change accumulation energy
The method of aggregate, the phase-change accumulation energy aggregate obtained, it is used for preparing mortar, concrete, and produces various building block or sheet material
Deng..
Background technology
Phase-changing energy storage material is a kind of hot functional material, it is possible to be stored in wherein by energy with the form of phase transformation potential, real
Existing energy conversion between different periods.In recent years, fossil energy is exhausted and the problem such as environmental pollution is more and more prominent, improves energy
Source service efficiency and exploitation regenerative resource become the important topic of facing mankind.Utilize phase-change material (Phase Change
Materials (PCMs)) latent heat of phase change realize storage and the utilization of energy, be favorably improved efficiency and exploitation renewable energy
Source, is a forward position research direction the most active in energy science and material science in recent years.With sensible heat energy storage material
Comparing, phase-change energy-storage composite material has energy storage density height, compact, temperature control is constant, energy-saving effect notable, phase alternating temperature
Degree range of choice width, the advantage such as easily controllable, Aero-Space, Solar use, heating and air-conditioning, electric power system optimization, doctor
Learn the various fields such as engineering, military engineering, accumulation of heat building and extreme environment clothing to have broad prospects.
Especially at building field, use phase-change energy-storage composite material, significantly improve heat storage capacity same of building
Time, be conducive to alleviating and thinning building structure, there is tempting using value.Some theory analysises and simulation study show: adopt
With having floor or the ceiling of energy-storage function, by cold-storage at night (hot), in the premise improving Indoor environment hot comfort
Under, building energy consumption and the operating cost of HVAC and load to society electric power thereof can be greatly reduced.It is known that China is electric
The power energy compares shortage, especially in the area that some Economic contrast are flourishing, often occurs what supply falls short of demand for electric power energy in summer
Situation.And in society's electric power total load, air conditioner load account for the biggest proportion, therefore, if reduction air-conditioning electric load will
There is significant social meaning.
At present, in the research of phase-changing energy storage material, some researchs mix with porous particle after being melted by phase-changing energy storage material
Close, under vacuum or non-vacuum condition, make phase-changing energy storage material penetrate in porous particle, form phase-change accumulation energy aggregate.As specially
Profit file " phase-changing energy-storage composite material for building and preparation method thereof " CN1450141A, porous material gathers materials to use to utilize and expands
Clay, bloating shale, expanded perlite, expanding powder coal ash；Organic phase change material uses paraffin, butyl stearate.Patent document
" preparation method of a kind of porous media composite phase change energy-storing granule " CN103666380A, porous media is expanded perlite, glass
Change microballon, kieselguhr, bentonite or graphite.
Steam-pressing aero-concrete/building block is widely used in modern architecture with its light weight, porous, the feature of good heat insulating
In, to improve the heat-insulating property of building.Affected by building service life and urban architecture planning and development, city existent building
Dismounting create substantial amounts of construction waste steam-pressing aero-concrete (hereinafter referred to as give up air entrained concrete), and its generation amount meeting
Increase year by year.If substantial amounts of useless air entrained concrete can not process in time and utilize digestion, it will takies a large amount of soil, and then right
Air, water body etc. pollute, and also can form the waste of resource while bringing high risks to society, environment.The present invention
Utilize useless air entrained concrete as backing material, develop a kind of not easy to leak, long-lived phase-change accumulation energy aggregate.
Summary of the invention
The invention provides a kind of phase-change accumulation energy aggregate utilizing useless air entrained concrete to prepare and preparation method thereof.
The phase-change accumulation energy aggregate of the present invention the specific scheme is that a kind of phase-change accumulation energy aggregate, by phase-change material nuclear core and encapsulation
Shell forms；Described phase-change material nuclear core is to have adsorbed the useless air entrained concrete granule of phase-change material；Described package casing is served as reasons
The composite bed of polymer emulsion, steel-making slag powder, cement, plaster of Paris, manganese ground-slag composition；The proportioning of described phase-change accumulation energy aggregate, presses
Weight ratio is, useless air entrained concrete granule 10 parts, phase-change material 7～10 parts, polymer emulsion 1.7～2.7 parts, steel-making slag powder 4.5
～5.5 parts, cement 1.2～1.8 parts, water 2～2.5 parts, plaster of Paris 1.5～2 parts, manganese ground-slag 3～3.8 parts.
A kind of method preparing described phase-change accumulation energy aggregate, the method comprises the following steps:
Step one: useless air entrained concrete is broken into the granule that particle diameter is 2～7mm；
Step 2: phase-change material is heated up and melts, add the useless air entrained concrete granule in 10 parts of described steps one,
Adsorb 2h under 0.06～0.08MPa vacuum, make phase-change material nuclear core；
Step 3: by polymer emulsion, steel-making slag powder, cement and water (1.7～2.7) in mass ratio: (4.5～5.5): (1.2
～1.8): the ratio of (2～2.5) makes mixed slurry, and described polymer emulsion is white glue with vinyl and/or methyl silicon sodium alcoholate；To build
Build Gypsum Fibrosum, manganese ground-slag (1.5～2) in mass ratio: the ratio of (3～3.8) makes mixed powder；By what described step 2 obtained
Phase-change material nuclear core is immersed in described mixed slurry 4～8 seconds, wraps up one layer of described mixed powder after pulling out again outside it；
After maintenance, obtain phase-change accumulation energy aggregate.
Described polymer emulsion is white glue with vinyl and/or methyl silicon sodium alcoholate.
Described useless air entrained concrete grain diameter is 2～7mm.
The phase transition temperature of described phase-change material is 25～36 DEG C.
The specific surface area of described steel-making slag powder is 400～500m2/kg。
Described cement is any one in " general-purpose cement " GB175-2007.
The specific surface area of described manganese ground-slag is 450～550m2/kg。
In the described method preparing phase-change accumulation energy aggregate, cylinder or rotating disk technique can be passed through in phase-change material nuclear core
Outside one layer of described mixed powder of parcel.
In the present invention, useless air entrained concrete granule forms one layer of water-repellent layer due to absorption phase-change material on its surface,
If not filling white glue with vinyl and/or methyl silicon sodium alcoholate emulsion in mixed slurry, this water-repellent layer being difficult to adsorbed film of water, is difficult to
One layer of thin and thick uniform inorganic material package casing is formed outside phase-change material nuclear core.If package casing uneven distribution its hold
Load power size is uneven, and partial encapsulation shell easily comes off, so that having influence on the intensity of phase-change accumulation energy aggregate, also can cause phase transformation material
The seepage of material.In mixed slurry, fill the emulsion such as white glue with vinyl and/or methyl silicon sodium alcoholate, solve the problems referred to above with arriving very much.Separately
Outward, white glue with vinyl and methyl silicon sodium alcoholate emulsion have film property, can form one layer of polymeric protecting film, block inorganic envelope after dehydration
The micropore of dress layer, plays the phase-change material to nuclear core and strengthens the effect of encapsulation so that it is be more difficult to seepage.
The invention have the benefit that
The present invention, with useless air entrained concrete for nuclear core backing material, makes phase-change accumulation energy aggregate, it is achieved that mix useless aerating
The utilization of solidifying soil；Phase-change material is solved easy at the phase-change material uniform polymer of nuclear core outer wrapping and inorganic material composite bed
The problem of seepage.This phase-change accumulation energy aggregate intensity is high, phase-change accumulation energy is effective, is more inorganic material due to encapsulating material, is used for
Preparation mortar, concrete, when producing various building block or sheet material, the compatibility with Binder Materials be much better than expanded perlite,
Other porous materials such as light ceramic.
Accompanying drawing explanation
Fig. 1 is test box internal temperature change curve under different temperatures environment, and curve 1 is not for filling phase transformation storage
The temperature variation curve of the cassette interior of energy aggregate, curve 2 is that the variations in temperature of the cassette interior of admixture phase-change accumulation energy aggregate is bent
Line.
Detailed description of the invention
Embodiment one
By phase-change material that enough phase transition temperatures are 25.7 DEG C (its weight ratio is liquid paraffin: hard paraffin=85:15,
Enthalpy of phase change is 105.1J/g) put in container, heat up and make phase-change material melt；Add the useless aerating that 10 parts of particle diameters are 2～7mm to mix
Solidifying soil particle, stirs, and is sealed by container, adsorbs 2h, make phase-change material nuclear core under the vacuum of 0.06MPa.
By methyl silicon sodium alcoholate emulsion, steel-making slag powder, (specific surface area is 417m2/ kg), 32.5# Portland cement and water presses
The ratio of mass ratio 2.7:5.5:1.2:2 makes mixed slurry；By plaster of Paris and manganese ground-slag, (specific surface area is 532m2/ kg)
The ratio of 1.5:3.8 in mass ratio makes mixed powder.Described phase-change material nuclear core is immersed in described mixed slurry 4 seconds,
Outside it, one layer of described mixed powder is wrapped up again after pulling out；Natural curing 28 days, obtains phase-change accumulation energy aggregate.Through adjusting,
The concrete material proportion of phase-change accumulation energy aggregate: useless air entrained concrete granule 10 parts, phase-change material 7.4 parts, methyl silicon sodium alcoholate emulsion
2.66 parts, steel-making slag powder 5.42 parts, cement 1.28 parts, 2.07 parts of water, plaster of Paris 1.58 parts, manganese ground-slag 3.74 parts.
Embodiment two
By phase-change material that enough phase transition temperatures are 29.3 DEG C (by weight for liquid paraffin: stearic acid=78:22, phase
Change enthalpy is 135.2J/g) put in container, heat up and make phase-change material melt；Add the useless aerating coagulation that 10 parts of particle diameters are 2～7mm
Soil particle, stirs, and is sealed by container, adsorbs 2h, make phase-change material nuclear core under the vacuum of 0.08MPa.
By white glue with vinyl, steel-making slag powder, (specific surface area is 453m2/ kg), 32.5# Portland fly ash cement and water in mass ratio
The ratio of 2.2:5:1.5:2.2 makes mixed slurry；By plaster of Paris and manganese ground-slag, (specific surface area is 516m2/ kg) by quality
Ratio than 1.7:3.5 makes mixed powder.Described phase-change material nuclear core is immersed in described mixed slurry 6 seconds, after pulling out
One layer of described mixed powder is wrapped up again outside it；Natural curing 28 days, obtains phase-change accumulation energy aggregate.Through adjusting, phase transformation is stored up
The concrete material proportion of energy aggregate: useless air entrained concrete granule 10 parts, phase-change material 9.6 parts, white glue with vinyl 2.13 parts, steel-making slag powder
4.85 parts, cement 1.46 parts, 2.13 parts of water, plaster of Paris 1.74 parts, manganese ground-slag 3.58 parts.
Embodiment three
By phase-change material that enough phase transition temperatures are 35.2 DEG C (by weight for liquid paraffin: butyl stearate=75:
25, enthalpy of phase change is 143.2J/g) put in container, heat up and make phase-change material melt；Adding 10 parts of particle diameters is 2～7mm useless add
Gas concrete particle, stirs, and is sealed by container, adsorbs 2h, make phase-change material nuclear core under the vacuum of 0.07MPa.
By methyl silicon sodium alcoholate emulsion, white glue with vinyl, steel-making slag powder, (specific surface area is 485m2/ kg), 32.5# slag acid salt cement
Mixed slurry is made with the ratio of water 1:0.7:4.5:1.8:2.5 in mass ratio；By plaster of Paris and manganese ground-slag, (specific surface area is
464m2/ kg) ratio of 2:3 in mass ratio makes mixed powder.Described phase-change material nuclear core is immersed in described mixed slurry
8 seconds, outside it, after pulling out, wrap up one layer of described mixed powder again；Natural curing 28 days, obtains phase-change accumulation energy aggregate.Through core
Calculate, the concrete material proportion of phase-change accumulation energy aggregate: useless air entrained concrete granule 10 parts, phase-change material 8.9 parts, methyl silicon sodium alcoholate breast
Liquid 1.09 parts, white glue with vinyl 0.79 part, steel-making slag powder 4.55 parts, cement 1.78 parts, 2.47 parts of water, plaster of Paris 1.96 parts, manganese ground-slag
3.04 part.
Prepared by phase transformation box: by 1 part of phase-change accumulation energy aggregate (being obtained by embodiment three), 1 part of 32.5# slag acid salt cement, 2
Part fluvial sand, 1.5 parts of water are configured to phase transition insulation mortar, make the Mortar Plates that thickness is 20mm；After Mortar Plates room temperature maintenance 28 days,
It is spliced into the hollow case of 7cm × 7cm × 11cm, seam adhering with epoxy resin, and hollow part is arranged therein
Temperature sensor.
Prepared by contrast box: 1 part of 32.5# slag acid salt cement, 2 parts of fluvial sand, 1.5 parts of water are configured to ordinary mortar, system
Becoming thickness is the Mortar Plates of 20mm；After Mortar Plates room temperature maintenance 28 days, it is spliced into the hollow case of 7cm × 7cm × 11cm,
Seam adhering with epoxy resin, and hollow part arranges temperature sensor therein.
During test, the internal temperature of room temperature and two boxes is 27 DEG C.First two boxes are put in the calorstat of 38 DEG C,
The internal temperature of a box is surveyed every 6min；After the internal temperature of two boxes all reaches 38 DEG C, the two box is same
In time, take out in the room temperature environment being placed on 27 DEG C, every the internal temperature that 6min surveys a box, obtains the box of accompanying drawing 1 not
Internal temperature change curve under synthermal environment.
Claims (7)
1. a phase-change accumulation energy aggregate, it is characterised in that be made up of phase-change material nuclear core and package casing；Described phase-change material core
Core is the useless air entrained concrete granule having adsorbed phase-change material；Described package casing be by polymer emulsion, steel-making slag powder, cement,
The composite bed of plaster of Paris, manganese ground-slag composition；The proportioning of described phase-change accumulation energy aggregate, be by weight, useless air entrained concrete
Grain 10 parts, phase-change material 7～10 parts, polymer emulsion 1.7～2.7 parts, steel-making slag powder 4.5～5.5 parts, cement 1.2～1.8 parts,
Water 2～2.5 parts, plaster of Paris 1.5～2 parts, manganese ground-slag 3～3.8 parts；Described polymer emulsion is white glue with vinyl and/or methyl silicon
Sodium alkoxide.
Phase-change accumulation energy aggregate the most according to claim 1, it is characterised in that described useless air entrained concrete grain diameter is 2
～7mm.
Phase-change accumulation energy aggregate the most according to claim 1, it is characterised in that the phase transition temperature of described phase-change material be 25～
36℃。
Phase-change accumulation energy aggregate the most according to claim 1, it is characterised in that the specific surface area of described steel-making slag powder be 400～
500m2/kg。
Phase-change accumulation energy aggregate the most according to claim 1, it is characterised in that described cement is " general-purpose cement " GB175-
Any one in 2007.
Phase-change accumulation energy aggregate the most according to claim 1, it is characterised in that the specific surface area of described manganese ground-slag be 450～
550m2/kg。
7. prepare the method for phase-change accumulation energy aggregate described in claim 1 for one kind, it is characterised in that the method comprises the following steps:
Step one: useless air entrained concrete is broken into the granule that particle diameter is 2～7mm；
Step 2: phase-change material is heated up and melts, add the useless air entrained concrete granule in 10 parts of described steps one, 0.06～
Adsorb 2h under 0.08MPa vacuum, make phase-change material nuclear core；
Step 3: by polymer emulsion, steel-making slag powder, cement and water in mass ratio 1.7～2.7:4.5～5.5:1.2～1.8:2～
The ratio of 2.5 makes mixed slurry, and described polymer emulsion is white glue with vinyl and/or methyl silicon sodium alcoholate；By plaster of Paris, manganese ground-slag
The ratio of in mass ratio 1.5～2:3～3.8 makes mixed powder；The phase-change material nuclear core obtained in described step 2 is immersed
In described mixed slurry 4～8 seconds, outside it, after pulling out, wrap up one layer of described mixed powder again；After maintenance, obtain phase
Become energy storage aggregate.
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| CN105753390A (en) * | 2016-04-08 | 2016-07-13 | 东南大学 | Heat-storage aerated concrete and preparation method thereof |
| CN105924120B (en) * | 2016-05-18 | 2018-05-18 | 河北科技大学 | A kind of water proof anti-seepage phase-change energy-storage gypsum building block and preparation method thereof |
| CN109516736B (en) * | 2018-11-30 | 2020-08-04 | 中南大学 | Temperature shrinkage active control type cement stabilized macadam and preparation method thereof |
| CN109734360B (en) * | 2019-01-08 | 2021-07-02 | 济南大学 | Phase change concrete aggregate and preparation method and application thereof |
| CN111499245B (en) * | 2020-04-29 | 2023-11-10 | 广西交科集团有限公司 | Preparation method of composite shaping phase thinned aggregate for asphalt mixture |
| CN113402187B (en) * | 2021-06-23 | 2023-01-17 | 昆明理工大学 | Energy-storage phosphorus building gypsum aggregate and preparation method thereof |
| CN115340333B (en) * | 2022-08-15 | 2023-05-09 | 青岛市产品质量检验研究院(青岛市产品质量安全风险监测中心) | Preparation and application of green recycled concrete phase change material |
| CN116283204B (en) * | 2023-03-14 | 2024-06-07 | 深圳市政集团有限公司 | Road composite phase change material based on regenerated micro powder and preparation method thereof |
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| CN104649632A (en) * | 2015-01-20 | 2015-05-27 | 建筑材料工业技术监督研究中心 | Phase-change energy-storage temperature-regulation foam concrete and preparation method thereof |
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| CN104609791B (en) * | 2015-01-27 | 2016-08-24 | 建筑材料工业技术监督研究中心 | Phase-change accumulation energy double limit homoiothermic mortar and preparation method thereof |
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