CN108034411A - A kind of composite phase-change material of porous material loading and preparation method thereof - Google Patents
A kind of composite phase-change material of porous material loading and preparation method thereof Download PDFInfo
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- CN108034411A CN108034411A CN201810038119.6A CN201810038119A CN108034411A CN 108034411 A CN108034411 A CN 108034411A CN 201810038119 A CN201810038119 A CN 201810038119A CN 108034411 A CN108034411 A CN 108034411A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
- C04B41/71—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
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Abstract
The invention discloses a kind of composite phase-change material of porous material loading and preparation method thereof, which is made up of the following raw material：25 40wt% gypsum, 0.5 6wt% attapulgites, 0.5 6wt% graphite, 50 69wt% phase transition agents and 5 8wt%901 building adhesives；Preparation method includes：(1) gypsum, attapulgite, graphite and manganese dioxide are uniformly mixed, by solid-to-liquid ratio 1g：1~2ml adds water, is stirred until homogeneous slurry；(2) solid-to-liquid ratio 100g is pressed in the slurry：1~2ml adds 30% hydrogen peroxide, stirs evenly and pours into mould, foaming at normal temp, curing, and the demoulding, dries to obtain high hole bulk porous material；(3) phase transition agent heating be fully fused into liquid, porous material is immersed in 0.5 2h in phase transition agent, cool down porous material loading composite phase-change material；(4) composite phase-change material is immersed in 5 10min in 901 building adhesives, it is dry.Composite phase-change material enthalpy of phase change of the present invention is high, does not leak, inexpensively, and heat endurance, good heat conductivity.
Description
Technical field
The present invention relates to the composite phase-change material and its system in energy saving energy storage material field, specifically a kind of porous material loading
Preparation Method.
Background technology
The worsening shortages of the energy make raising energy use efficiency and utilization regenerative resource become letter generation to be solved
Criticality problem.Phase-change material (Phase Change Materials, PCMs) because its with energy storage density is big, energy storage capacity is big,
Constant temperature, process are easy to control, the advantages that may be reused, and become research in terms of domestic and international using energy source and material science
Hot spot.As a kind of efficient thermal energy storage medium, phase-change material is in aerospace, Solar use, heating and air-conditioning, confession
The various fields such as electric system optimization, engineering in medicine, military engineering, heat accumulation building all have important application value and it is wide before
Scape.
There are inorganic phase-changing material and organic phase change material using more phase-change material, wherein inorganic phase-changing material generally has
There is high, the nontoxic, non-corrosiveness of phase transformation roasting, cheap and easy to get, but it has lacking of easily leaking during solid-liquid phase-changeable
Fall into, and organic phase change material then there are intrinsic heat endurance, heat conductivility is poor the defects of.So good more of adsorption selectivity
Porous materials by phase-change material absorption in its pore passage structure, using the capillary absorption performance in its duct, reach as backing material
The purpose of phase-change material leakage is prevented, to obtain high enthalpy of phase change, nontoxic, non-corrosiveness, not leak, cheap and easy to get and thermostabilization
Property, the composite phase-change material of good heat conductivity be always this area related personnel make great efforts direction.Such as Yancheng Institute Of Technology side east
(CN101857795A and CN 101928551A) individually discloses a kind of ionic liquid composite phase change energy storage material and its preparation side
Method and a kind of higher alcohols co-blending composite phase change energy storage material and preparation method thereof.It is characterized in that phase-change energy-storage composite material is using more
Porous materials are as basis material, then infiltrate ionic liquid at room temperature and saturated straight chain alkanol phase-change material composition.Beijing University of Chemical Technology
Yang Ru etc. (CN 104152114) discloses a kind of preparation method of gypsum clay composite phase-change energy-storing material, it is characterised in that with
Porous, inorganic clay material is composite phase-change presoma, adsorbs organic phase transition agent by solution intercalation method, then bonded with binding agent
It is granulated and dry obtained, then prepares phase transformation gypsum clay composite phase-change energy-storing material with semi-hydrated gypsum mixed-forming.Guilin electricity
The sub- virtuous grades (CN 104371659) of University of Science and Technology Sun Li disclose a kind of attapulgite base composite phase-change heat accumulating and its preparation
Method, the composite phase-change heat-storage material are formed by one phase-change material and one attapulgite clay compounded.Chinese Academy of Sciences's Guangzhou energy
(CN 104559938A) such as Ding Taiaotu research and development centres of institute Chen Xin morals discloses a kind of one attapulgite clay compounded phase-change material of paraffin
Preparation method, attapulgite is rinsed first, is acidified, organically-modified processing, is then mixed it with inorganic material
It is even, the phase change paraffin of fusing is eventually adding, the recessed native composite phase-change material of paraffin one is obtained by infusion process.
What but these researchs were selected mostly is the adsorbent support material as phase transition agent such as graphite, attapulgite, although
The mesoporous characteristic of the materials such as graphite, attapulgite in itself makes them have excellent absorption property, but total adsorbance of phase transition agent
Still it is relatively low, it result in relatively low latent heat and enthalpy change.In addition, the composite phase-change material obtained in existing research is mostly scattered
Granular, the leakage of phase transition agent in order to prevent, needs to load special container in actual use, have impact on phase-change material to a certain extent
Performance.
The content of the invention
Composite phase-change material and its preparation side in view of the deficiencies of the prior art, the present invention proposes a kind of porous material loading
Method, for this method by preparing block high porous material, the process such as absorption phase transition agent and encapsulation, on the one hand greatly improves phase transition agent
Adsorbance, on the other hand avoids the leakage problem of transport and the phase transition agent using process；Obtained composite phase-change material phase transformation
Enthalpy is high, do not leak, inexpensively, and heat endurance, good heat conductivity, especially bulk material Structure Widening composite phase-change material
Application field.
The above-mentioned purpose of the present invention is achieved by following technical solution：
A kind of composite phase-change material of porous material loading, is prepared by the following raw material：25-40wt% gypsum,
0.5-6wt% attapulgites, 0.5-6wt% graphite, 50-69wt% phase transition agents and 5-8wt%901 building adhesives.
Preferably, the phase transition agent is the mixing of one or both of long chain fatty acids, polyalcohol, paraffin and the above
Thing.
Preferably, the phase transition agent is paraffin, stearic acid, trimethylolpropane or its mixture.
Preferably, the gypsum is β-semi-hydrated gypsum cementitious material.
Preferably, 901 building adhesive is Water-Soluble Polyvinyl Formal adhesive.
The preparation method of above-mentioned composite phase-change material, includes the following steps：
(1) gypsum, attapulgite, graphite and manganese dioxide are uniformly mixed, by solid-to-liquid ratio 1g：1~2ml adds water, fills
Divide and be stirred until homogeneous slurry；
(2) solid-to-liquid ratio 100g is pressed in the slurry：1~2ml adds the hydrogen peroxide that concentration is 30%, and mould is poured into after stirring evenly
Have, foaming, curing under normal temperature condition, the demoulding, drying to constant weight, obtains the block porous material of high hole；
(3) phase transition agent heating is fully fused into liquid, porous material is immersed in phase transition agent liquid, soaking time is
0.5-2h, immersion postcooling obtain the composite phase-change material of porous material loading to room temperature；
(4) composite phase-change material obtained in (3) is immersed in 901 building adhesives, soaking time 5-10min, taken out
Afterwards air drying to constant weight to obtain the final product.
Preferably, manganese dioxide additive amount accounts for the 1-2wt% of solid material content.
Preferably, drying to constant weight under the conditions of 50 DEG C in step (2).
Advantages of the present invention：
(1) for the present invention with gypsum, attapulgite and graphite are primary raw material, be prepared for a kind of high porosity (>70%)
Carrier of the block porous material as phase transition agent, with its load organic phases become agent, then using 901 building adhesives to whole material into
Row encapsulation, can not only give full play to the characteristic of phase transition agent, but also can effectively prevent the leakage of phase transition agent.
(2) attapulgite and graphite that the present invention uses have meso-hole structure in itself so that the carrier material has good
Absorption property, graphite can also improve the heat conductivility of carrier material.It can ensure the characteristics of high porosity at the same time higher
Phase transition agent adsorbance (50-69wt%), effectively improves the enthalpy change of composite phase-change material.
Brief description of the drawings
Fig. 1 is the photo in kind of the composite phase-change material for the porous material loading that embodiment 2 obtains.
Embodiment
The specific guarantor for introducing essentiality content of the present invention, but the present invention not being limited with this with reference to the accompanying drawings and examples
Protect scope.
Embodiment 1：
Semi-hydrated gypsum 96g is weighed, attapulgite 12g, graphite 12g and manganese dioxide 1.8g are uniformly mixed, and add 140ml
Water, is stirred well to uniform sizing material.Then the hydrogen peroxide 1.2ml that concentration is 30% is added, mould, room temperature are poured into after stirring evenly
Under the conditions of foaming, cure, the demoulding, drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.Using paraffin as
Phase transition agent, heating are fully fused into liquid, porous material are immersed in phase transition agent liquid, soaking time 60min, after immersion
It is cooled to room temperature, obtains the composite phase-change material of porous material loading.Composite phase-change material is finally immersed in 901 building adhesives
In, soaking time 10min, drying at room temperature is to constant weight after taking-up.Obtained porosity of porous material is 71.4%, the compound phase
Become material phase transformation agent adsorbance as 51.1wt%.
Embodiment 2：
Semi-hydrated gypsum 96g is weighed, attapulgite 6g, graphite 18g and manganese dioxide 1.2g are uniformly mixed, and add 120ml water,
It is stirred well to uniform sizing material.Then the hydrogen peroxide 1.2ml that concentration is 30% is added, mould, room temperature bar are poured into after stirring evenly
Foam, cure under part, demould, drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.Using stearic acid as
Phase transition agent, heating are fully fused into liquid, porous material are immersed in phase transition agent liquid, soaking time 30min, after immersion
It is cooled to room temperature, obtains the composite phase-change material of porous material loading.Composite phase-change material is finally immersed in 901 building adhesives
In, soaking time 5min, drying at room temperature is to constant weight after taking-up.Obtained porosity of porous material is 76.3%, the compound phase
Become material phase transformation agent adsorbance as 55.7wt%.
Embodiment 3：
Semi-hydrated gypsum 96g is weighed, attapulgite 18g, graphite 6g and manganese dioxide 2.4g are uniformly mixed, and add 160ml water,
It is stirred well to uniform sizing material.Then the hydrogen peroxide 2.4ml that concentration is 30% is added, mould, room temperature bar are poured into after stirring evenly
Foam, cure under part, demould, drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.With trihydroxy methyl third
Alkane is fully fused into liquid, porous material is immersed in phase transition agent liquid, soaking time is as phase transition agent, heating
120min, immersion postcooling obtain the composite phase-change material of porous material loading to room temperature.Finally composite phase-change material is soaked
In 901 building adhesives, soaking time 5min, drying at room temperature is to constant weight after taking-up.Obtained porosity of porous material is
83.6%, which is 61.7wt%.
Embodiment 4：
Semi-hydrated gypsum 96g is weighed, attapulgite 21g, graphite 3g and manganese dioxide 2g are uniformly mixed, and are added 180ml water, are filled
Divide and be stirred until homogeneous slurry.Then the hydrogen peroxide 2ml that concentration is 30% is added, mould is poured into after stirring evenly, under room temperature
Foaming, cure, the demoulding, and drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.With paraffin and stearic
Mixture is fully fused into liquid, porous material is immersed in phase transition agent liquid, soaking time is as phase transition agent, heating
90min, immersion postcooling obtain the composite phase-change material of porous material loading to room temperature.Finally composite phase-change material is soaked
In 901 building adhesives, soaking time 10min, drying at room temperature is to constant weight after taking-up.Obtained porosity of porous material is
86.1%, which is 68.9wt%.
Embodiment 5：
Semi-hydrated gypsum 96g is weighed, attapulgite 3g, graphite 21g and manganese dioxide 1.8g are uniformly mixed, and add 120ml water,
It is stirred well to uniform sizing material.Then the hydrogen peroxide 1.2ml that concentration is 30% is added, mould, room temperature bar are poured into after stirring evenly
Foam, cure under part, demould, drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.With paraffin and three hydroxyls
The mixture of methylpropane is fully fused into liquid, porous material is immersed in phase transition agent liquid as phase transition agent, heating, soaks
The bubble time is 30min, and immersion postcooling obtains the composite phase-change material of porous material loading to room temperature.Finally by composite phase-change
Material is immersed in 901 building adhesives, soaking time 5min, and drying at room temperature is to constant weight after taking-up.Obtained porous material hole
Rate is 77.6%, which is 57.3wt%.
Embodiment 6：
Semi-hydrated gypsum 96g is weighed, attapulgite 12g, graphite 12g and manganese dioxide 1.5g are uniformly mixed, and add 160ml
Water, is stirred well to uniform sizing material.Then the hydrogen peroxide 1.5ml that concentration is 30% is added, mould, room temperature are poured into after stirring evenly
Under the conditions of foaming, cure, the demoulding, drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.With stearic acid and
The mixture of trimethylolpropane is fully fused into liquid, porous material is immersed in phase transition agent liquid as phase transition agent, heating
In, soaking time 60min, immersion postcooling obtains the composite phase-change material of porous material loading to room temperature.Finally will be compound
Phase-change material is immersed in 901 building adhesives, soaking time 10min, and drying at room temperature is to constant weight after taking-up.Obtained porous material
Porosity is 80.3%, which is 63.2wt%.
Embodiment 7：
Semi-hydrated gypsum 96g is weighed, attapulgite 12g, graphite 12g and manganese dioxide 1.8g are uniformly mixed, and add 120ml
Water, is stirred well to uniform sizing material.Then the hydrogen peroxide 1.8ml that concentration is 30% is added, mould, room temperature are poured into after stirring evenly
Under the conditions of foaming, cure, the demoulding, drying to constant weight under the conditions of 50 DEG C, obtains the block porous material of high hole.With paraffin, firmly
The mixture of resin acid and trimethylolpropane is fully fused into liquid, porous material is immersed in phase transformation as phase transition agent, heating
In agent liquid, soaking time 120min, immersion postcooling obtains the composite phase-change material of porous material loading to room temperature.Most
Composite phase-change material is immersed in 901 building adhesives afterwards, soaking time 5min, drying at room temperature is to constant weight after taking-up.Obtain
Porosity of porous material is 74.8%, which is 53.9wt%.
The effect of above-described embodiment is the essentiality content for specifically introducing the present invention, but those skilled in the art should know
Protection scope of the present invention, should not be confined to the specific embodiment by road.
Claims (8)
1. a kind of composite phase-change material of porous material loading, it is characterised in that be prepared by the following raw material：25-
40wt% gypsum, 0.5-6wt% attapulgites, 0.5-6wt% graphite, 50-69wt% phase transition agents and 5-8wt%901 building adhesives.
2. composite phase-change material according to claim 1, it is characterised in that：The phase transition agent is long chain fatty acids, polynary
The mixture of one or both of alcohol, paraffin and the above.
3. composite phase-change material according to claim 2, it is characterised in that：The phase transition agent is paraffin, stearic acid, three hydroxyls
Methylpropane or its mixture.
4. composite phase-change material according to claim 1, it is characterised in that：The gypsum is β-semi-hydrated gypsum gelling material
Material.
5. composite phase-change material according to claim 1, it is characterised in that：901 building adhesive is water-soluble polyethylene
Alcohol formal glue stick.
6. the preparation method of any composite phase-change materials of claim 1-5, it is characterised in that include the following steps：
(1) gypsum, attapulgite, graphite and manganese dioxide are uniformly mixed, by solid-to-liquid ratio 1g：1~2ml adds water, fully stirs
Mix to uniform sizing material；
(2) solid-to-liquid ratio 100g is pressed in the slurry：1~2ml adds the hydrogen peroxide that concentration is 30%, and mould is poured into after stirring evenly,
Foam, cure under normal temperature condition, the demoulding, drying to constant weight, obtains the block porous material of high hole；
(3) phase transition agent heating is fully fused into liquid, porous material is immersed in phase transition agent liquid, soaking time 0.5-
2h, immersion postcooling obtain the composite phase-change material of porous material loading to room temperature；
(4) composite phase-change material obtained in (3) is immersed in 901 building adhesives, soaking time 5-10min, after taking-up often
Temperature is dried to constant weight to obtain the final product.
7. preparation method according to claim 6, it is characterised in that：Manganese dioxide additive amount accounts for the 1- of solid material content
2wt%.
8. preparation method according to claim 6, it is characterised in that：Drying to constant weight under the conditions of 50 DEG C in step (2).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082267A (en) * | 2018-10-11 | 2018-12-25 | 上海第二工业大学 | A method of addition manganese dioxide particle improves n-octadecane/polystyrene phase microcapsules hot property |
| CN110257017A (en) * | 2019-06-18 | 2019-09-20 | 上海大学 | Fatty acid/attapulgite modified/expanded graphite composite phase-changing energy storage material and preparation method thereof |
| CN113402187A (en) * | 2021-06-23 | 2021-09-17 | 昆明理工大学 | Energy-storage phosphorus building gypsum aggregate and preparation method thereof |
| CN114716978A (en) * | 2022-04-06 | 2022-07-08 | 成都理工大学 | Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof |
| CN115246731A (en) * | 2021-12-21 | 2022-10-28 | 兰州理工大学 | Phase-change gypsum block and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107011868A (en) * | 2017-03-08 | 2017-08-04 | 北京交通大学 | A kind of paraffin/iron tailings Ceramic Composite phase-changing energy storage material and its melting impregnation preparation method |
-
2018
- 2018-01-16 CN CN201810038119.6A patent/CN108034411A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107011868A (en) * | 2017-03-08 | 2017-08-04 | 北京交通大学 | A kind of paraffin/iron tailings Ceramic Composite phase-changing energy storage material and its melting impregnation preparation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082267A (en) * | 2018-10-11 | 2018-12-25 | 上海第二工业大学 | A method of addition manganese dioxide particle improves n-octadecane/polystyrene phase microcapsules hot property |
| CN109082267B (en) * | 2018-10-11 | 2021-04-06 | 上海第二工业大学 | Method for improving thermal property of n-octadecane/polystyrene phase change microcapsule by adding manganese dioxide particles |
| CN110257017A (en) * | 2019-06-18 | 2019-09-20 | 上海大学 | Fatty acid/attapulgite modified/expanded graphite composite phase-changing energy storage material and preparation method thereof |
| CN113402187A (en) * | 2021-06-23 | 2021-09-17 | 昆明理工大学 | Energy-storage phosphorus building gypsum aggregate and preparation method thereof |
| CN115246731A (en) * | 2021-12-21 | 2022-10-28 | 兰州理工大学 | Phase-change gypsum block and preparation method thereof |
| CN114716978A (en) * | 2022-04-06 | 2022-07-08 | 成都理工大学 | Hierarchical pore structure carrier composite phase change energy storage material and preparation method thereof |
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Application publication date: 20180515 |