CN111434746A - Phase-change energy storage material filled with phosphogypsum, phase-change energy storage plate and preparation method thereof - Google Patents
Phase-change energy storage material filled with phosphogypsum, phase-change energy storage plate and preparation method thereof Download PDFInfo
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- CN111434746A CN111434746A CN201910032734.0A CN201910032734A CN111434746A CN 111434746 A CN111434746 A CN 111434746A CN 201910032734 A CN201910032734 A CN 201910032734A CN 111434746 A CN111434746 A CN 111434746A
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- 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
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- 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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/143—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
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- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
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- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
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Abstract
The invention discloses a phase change energy storage material filled with phosphogypsum, a phase change energy storage plate and a preparation method thereof, and belongs to the technical field of building materials. The phase change energy storage material filled with the phosphogypsum comprises 20-75 parts by weight of the phosphogypsum, 5-38 parts by weight of an inorganic phase change material, 2-25 parts by weight of expanded graphite, 0-1 part by weight of citric acid, 0-3 parts by weight of polypropylene fiber, 0.1-3 parts by weight of a water reducing agent and 20-85 parts by weight of water, and when the phase change temperature is reached, the phase change occurs, so that heat storage or heat release can be realized under the condition that the temperature is basically kept unchanged, the fluctuation of indoor temperature is reduced, and the comfort level of people living is improved. The invention adjusts the components and the proportion of the phase-change energy storage material; the phase change energy storage plate filled with the phosphogypsum is prepared in a filling and forming mode, the permeability of a phase change material can be reduced, the utilization rate of phase change heat is improved, and the service durability of the phase change energy storage plate is prolonged.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a phase change energy storage material filled with phosphogypsum, a phase change energy storage plate and a preparation method thereof.
Background
In the "special plan for energy conservation in the middle and long term" approved by the State Council, the energy conservation of buildings has been listed as the key field of energy conservation. The internal and external heat preservation technology of the wall body can only play a role in saving energy, and as the specific heat capacity of the heat preservation material is generally lower, solar energy or heat energy can not be stored almost, so that the energy consumption can not be greatly reduced. The building material and the phase change material are compounded, and compared with the common building heat insulation material, the composite material has higher heat capacity and thermal inertia. When the temperature of the microenvironment where the phase change material is located is lower than the phase change point, the phase change material is condensed into a solid state from a liquid state to release heat; when the temperature of the microenvironment where the phase change material is located is higher than the phase change point, the phase change material is melted from a solid state to a liquid state, and heat absorption is formed. The intermittent energy is stored, the heat storage efficiency of the building is improved, and the energy is output in a high-density and stable form. Through the storage and the discharge of the energy, the imbalance of the supply and the demand of the energy in time and space can be relieved to a great extent, and the utilization rate of the energy is greatly improved. And the phase-change material can be repeatedly used for many times, and when the phase-change material is applied to the field of building energy conservation, the heat-insulating capacity of a wall body can be improved, the heating energy consumption can be saved, and the phase-change material is an effective way for utilizing phase-change energy storage.
The phosphogypsum is considered as solid waste residue for a long time, the accumulation amount of the phosphogypsum in China exceeds 3 hundred million tons, the utilization rate is extremely low, and the research on accelerating the development and utilization of phosphogypsum resources is reluctant under the huge pressure of reasonable land utilization, environmental protection and resource recycling.
The patent publication No. CN102659377A discloses a heat-insulating and energy-saving composite phase-change energy-storage gypsum board prepared from phosphogypsum and other additives, and a phase-change energy-storage gypsum board prepared by mixing the phosphogypsum and other additives with a paraffin-high-density polyethylene shape-stabilized phase-change energy-storage material. However, the phase change energy storage material used in the application is a paraffin polymer shaping phase change material, the phase change material and the supporting material are both organic materials, the heat conductivity coefficient is low, the heat exchange efficiency is reduced, most organic materials are inflammable, toxic smoke is released in the combustion process, and the phase change material is packaged by a packaging material with high burning point or doped with a flame retardant and the like in the building material.
The patent publication No. CN10832001A discloses a decorative plate with the functions of energy storage, heat insulation and automatic indoor temperature adjustment, which is characterized in that a phase-change material is filled in an aluminum honeycomb plate, and a panel, a bottom plate and a honeycomb core layer are hermetically bonded, wherein the panel can be an aluminum plate, a stainless steel plate, a color steel plate or a stone plate. The utilization efficiency of the phase change heat is improved by utilizing the high heat conductivity of the metal honeycomb core layer and the panel. However, this method increases the complexity of the construction process.
Therefore, the application of the phase change energy storage material to the building material not only aims to solve the problems of easy leakage and low heat conductivity of the existing phase change material, but also considers the problems of durability and feasibility of the process. And a proper solution is found by compounding and packaging the material.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a phase change energy storage material filled with phosphogypsum, which is prepared by adjusting the components and the proportion of the phase change energy storage material; the phase change energy storage plate filled with the phosphogypsum is prepared in a filling and forming mode, the permeability of a phase change material can be reduced, the utilization rate of phase change heat is improved, and the service durability of the phase change energy storage plate is prolonged.
According to one aspect of the invention, a phase change energy storage material filled with phosphogypsum is provided, which comprises the following components:
wherein the inorganic phase-change material is inorganic hydrated salt.
Optionally, the following components are included:
the inorganic hydrated salt is Na2SO4·10H2O、CaCl2·6H2O、Na2HPO4·12H2And one or more of O.
Optionally, the following components are included:
alternatively, the expanded graphite is an expanded graphite having a pore size distribution of 100nm or less.
According to another aspect of the invention, there is provided a phase-change energy storage material-infused phase-change energy storage plate filled with phosphogypsum, the energy storage plate comprises a substrate, end blocking structures arranged at two ends of the substrate, and a finishing layer arranged on the upper surface of the substrate, the substrate is of a porous structure, the porous structure comprises through holes penetrating through the substrate along the longitudinal direction of the substrate, and the phase-change energy storage material as claimed in any one of claims 1 to 4 is arranged in the through holes.
Alternatively, the vias in the substrate are arranged in groups, each group comprising at least five vias.
Alternatively, the substrate has an open porosity of 65% or more.
Alternatively, the cross-section of the through-hole in the substrate is rectangular, the length of the rectangle being 1.6-2.0cm and the width of the rectangle being 0.8-1.0 cm.
Optionally, the end plugging members of the two ends are phosphogypsum.
According to another aspect of the invention, a preparation method of a phase change energy storage plate filled with phosphogypsum is provided, which comprises the following steps:
s1 packaging one end of the substrate, and keeping one end of the substrate open;
s2, weighing 5-38 parts by weight of inorganic phase change material, heating for melting, weighing 2-25 parts by weight of expanded graphite, mixing with the inorganic phase change material, stirring for 3-5 minutes at a speed of one circle per second, and cooling to room temperature to obtain solid mixed powder;
s3, weighing 0-1 part by weight of citric acid, 0-3 parts by weight of polypropylene fiber and 0.1-3 parts by weight of water reducing agent, adding the weighed citric acid, polypropylene fiber and water reducing agent into the solid mixed powder obtained in the step S2, and stirring for 5-6 minutes at the speed of one circle per second to obtain the composite phase change material;
s4, dispersing the composite phase change material prepared in the step S3 into 20-85 parts by weight of water, adding 20-75 parts by weight of phosphogypsum powder to prepare slurry, standing for 1-3 minutes, stirring for 30-60 seconds at a rotating speed of 1-1.5 seconds per circle by using a stirring rod, and slowing down the stirring speed to continuously stir until the slurry is thickened;
s5, the slurry stirred in the step S4 is poured into the substrate through one end of the opening of the substrate, and the substrate is vibrated to discharge air bubbles in the slurry;
s6 plugging the other end opening of the substrate;
s7, curing the plugged substrate in the step S6 in a dry environment for 12-24 hours to obtain the phase change energy storage plate filled with the phosphogypsum, wherein the curing temperature is set to be 40-60 ℃.
The phase change energy storage material filled with the phosphogypsum mainly comprises the following components in percentage by weight: 20-75 parts of phosphogypsum, 5-38 parts of inorganic phase-change material, 2-25 parts of expanded graphite, 0-1 part of citric acid, 0-3 parts of polypropylene fiber, 0.1-3 parts of water reducing agent and 20-85 parts of water.
Preferably, the content of each component is as follows: 30-70 parts of phosphogypsum, 10-35 parts of inorganic phase-change material, 5-22 parts of expanded graphite, 0.1-0.8 part of citric acid, 0.5-2.5 parts of polypropylene fiber, 0.2-2.8 parts of water reducing agent and 25-82 parts of water. The expanded graphite serving as one of main filling components of the phase-change energy storage material has rich microporous structures, has good adsorption performance on hydrated inorganic salt, and can improve the energy storage density of the composite phase-change material.
The inorganic phase-change material serving as one of main filling components of the phase-change energy storage material can be adsorbed in micropores of expanded graphite, and when solid-liquid phase change occurs, the liquid phase-change material is difficult to desorb from the micropores under the action of capillary force and surface tension, so that the inorganic phase-change material/expanded graphite composite phase-change heat storage material serving as a heat storage building material prepared from the components of a building material is not easy to leak, and the expanded graphite has high heat conductivity coefficient, so that the prepared heat storage building material has good heat transfer performance in the processes of storing and releasing heat.
According to the invention, the phase-change material and the expanded graphite are mixed according to a certain proportion, if the addition amount of the expanded graphite is too small, the phase-change material cannot be completely adsorbed and mixed, and the possibility of leakage of the phase-change material after multiple thermal cycles is increased; if the proportion of the expanded graphite exceeds a certain amount, the expanded graphite is already a dispersion, and a large volume is compressed with a slight external force, but the thermal conductivity does not change much. The inventor finds that the phase change energy storage material prepared by mixing 5-38 parts by weight of the inorganic phase change material and 2-25 parts by weight of the expanded graphite has higher heat conductivity, and the phase change material can not leak even if the phase change material is used for a plurality of times of thermal cycles for a long time.
The phosphogypsum is used as one of the main components of the phase change energy storage material, the phosphogypsum is used as a cementing material, the phase change material is solidified to be beneficial to material filling, the recycling of solid wastes can be realized, the addition amount of the phosphogypsum also depends on the addition amount of the phase change material, the phase change latent heat is large when the addition amount of the phase change material is large, the better heat storage of the phase change energy storage plate is facilitated, but the proportion of the phase change material to the phosphogypsum exceeds a certain degree, the workability of gypsum and phase change material slurry is greatly reduced, and the mixing is difficult. The inventor finds that when 20-75 parts by weight of phosphogypsum is added into the phase change energy storage material, the prepared phase change energy storage plate has good heat preservation performance, and meanwhile, the phase change material and phosphogypsum have excellent workability so as to be convenient for filling into a substrate, and more preferably, the content of the phosphogypsum in the phase change energy storage material is 30-70 parts by weight.
The naphthalene water reducer FDN is selected as the water reducer, and the fluidity can be effectively improved on the premise of not reducing water with standard consistency, so that the mixing amount of the phase-change material can be remarkably increased, and the heat storage amount of the prepared phase-change energy storage plate is further increased.
The phase change energy storage plate adopts a porous plate with the aperture ratio of more than 65% as a substrate, wherein the aperture ratio is the ratio of the total area of the substrate on the substrate to the area of an aperture region. Preferably, the substrate has an open porosity of 65% to 85%. Under this condition, can not only guarantee the intensity of base plate and also be convenient for pour into the thick liquids into the base plate into, make full use of base plate inner space simultaneously, pour into more thick liquids into in the base plate, can further improve the heat-preserving capability of base plate.
In the preparation process of the phase change energy storage plate, firstly, the inorganic phase change material and the expanded graphite are respectively weighed according to the proportion, then, the inorganic phase change material is heated and melted, the weighed expanded graphite is added into the melted phase change material and is stirred and dispersed, after the mixture is cooled to room temperature, the citric acid, the polypropylene fiber and the water reducing agent are added, finally, the solid mixed powder is dispersed into water, and finally, the phosphogypsum is added. Firstly, the phase-change material is melted into liquid state, and then the expanded graphite is added to ensure that the phase-change material is completely absorbed by the expanded graphite. And after cooling to room temperature, the phase-change material is solidified in the pores of the expanded graphite to obtain the composite phase-change material in a solid powder state. Because the gypsum setting time is short, the phosphogypsum is added at the end of the operation, otherwise, the gypsum setting is difficult to pour into the stone-plastic substrate.
The following is a preferred example of the method of the present invention for the preparation of phase change energy storage plates filled with phosphogypsum:
step 1: one end of the stone plastic plate hole is sealed by adding water into phosphogypsum.
Step 2: weighing 20 parts by weight of phase-change material, putting a container containing the phase-change material in a constant-temperature water bath kettle at 60 ℃ to completely melt the phase-change material into liquid state, adding 10 parts by weight of expanded graphite, stirring uniformly, putting the container in a vacuum drying oven to adsorb for 4 hours, taking out the container, and naturally cooling to room temperature
And step 3: weighing 0.1 part by weight of citric acid, 0.6 part by weight of polypropylene fiber and 0.6 part by weight of water reducing agent, and adding the materials into the solid powder prepared in the step 2.
And 4, step 4: and (4) mechanically stirring the solid raw materials in the step 2-3 uniformly.
And 5: firstly, measuring required water, pouring the water into a stirring pot, adding the composite phase change material prepared in the step 2-4, stirring by using a stirring rod to disperse the composite phase change material in the water as much as possible, then adding 65 parts by weight of phosphogypsum powder, standing for 1 minute, stirring by using the stirring rod at the speed of one circle per second for 30 seconds, and then slowly stirring until the slurry begins to thicken (namely, the slurry just forms a cone when the slurry slowly falls onto the surface of the slurry from a spoon).
Step 6: the slurry is poured into a porous stone-plastic plate while being slowly stirred, and vibration is appropriately performed to discharge air bubbles.
And 7: and plugging the other end of the hole in the stone plastic plate.
And 8: and (3) putting the porous plate filled with the phase change material into an oven for curing, wherein the curing temperature is 50 ℃, and the curing time is 24 hours.
And step 9: and (3) carrying out facing treatment on the stone-plastic plate by adopting an environment-friendly and energy-saving ultraviolet curing and transfer printing technology.
The invention has the following beneficial effects:
1. according to the phase change energy storage material filled with the phosphogypsum, the phase change material is subjected to phase change when reaching the phase change temperature, so that heat storage or heat release can be realized under the condition that the temperature is basically kept unchanged, the fluctuation of indoor temperature is reduced, and the living comfort is improved.
2. The phase change energy storage plate filled with the phosphogypsum is a temperature adjustment and decoration integrated building material product meeting the requirement of the existing assembly type decoration, and has the characteristics of environmental protection, high energy storage density, high phase change heat utilization rate, effective packaging, high strength and wear resistance, convenient and fast lock catch design and installation, lower cost and the like.
3. The phase change energy storage plate filled with the phosphogypsum can be used for indoor decoration or combined with refrigeration and heating equipment such as an air conditioner, a radiator and the like, the indoor energy is recycled, the indoor temperature fluctuation is reduced, and the living environment with proper temperature and high comfort level is created.
4. The phase change energy storage filled with the phosphogypsum can shift peaks and fill valleys, relieves the load of a power grid, can save the operation cost of a user, reduce the scale of an air conditioning system or a heating system and the corresponding investment cost, and achieves the aims of energy conservation and environmental protection.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a process flow diagram for preparing a phase change energy storage plate filled with phosphogypsum in the embodiment of the invention.
Fig. 2 is a schematic structural diagram of a phase change energy storage plate filled with phosphogypsum prepared in the embodiment of the invention.
Figure 3 is a side cross-sectional view of a phase change energy storage panel filled with phosphogypsum made in an example of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that, in the embodiments and examples of the present application, the feature vectors may be arbitrarily combined with each other without conflict.
As shown in fig. 1, the preparation method of the phase change energy storage plate filled with phosphogypsum comprises end capping, filling, end capping and facing, and specifically comprises the following steps:
s1 encapsulates one end of the substrate, leaving one end of the substrate open. Preferably, the substrate is a porous stone plastic plate.
S2, weighing 5-38 parts by weight of inorganic phase change material, placing a container containing the phase change material in a constant-temperature water bath kettle at 60 ℃ to completely melt the phase change material into liquid, adding 2-25 parts by weight of expanded graphite, stirring for 3-5 minutes at a speed of one circle per second, placing the container in a vacuum drying oven for adsorption for 4 hours, taking out and naturally cooling to room temperature to obtain solid mixed powder.
S3, weighing 0-1 part by weight of citric acid, 0-3 parts by weight of polypropylene fiber and 0.1-3 parts by weight of water reducing agent, adding the weighed citric acid, polypropylene fiber and water reducing agent into the solid mixed powder obtained in the step S2, stirring for 5-6 minutes at the speed of one circle per second, and stirring to obtain the composite phase change material.
S4, dispersing the composite phase change material prepared in the step S3 into 20-85 parts by weight of water, adding 20-75 parts by weight of phosphogypsum powder to prepare slurry, standing for 1-3 minutes, stirring for 30-60 seconds at a rotating speed of 1-1.5 seconds per circle by using a stirring rod, preferably, standing for 3 minutes, stirring for about 60 seconds at a rotating speed of 1 second per circle by using a stirring rod, slowing down the stirring speed, continuously stirring until the slurry is thickened, and stopping stirring until the slurry slowly falls onto the surface of the slurry to just form a cone.
S5, the slurry is stirred in step S4 until the slurry is poured into the substrate through the open end of the substrate, and during the pouring process, the substrate is vibrated slightly to discharge the bubbles in the slurry until the substrate is filled with the slurry.
And S6 sealing the other end opening of the substrate.
S7, curing the plugged substrate in the step S6 in a dry environment for 12-24 hours to obtain the phase change energy storage plate filled with the phosphogypsum, wherein the curing temperature is set to be 40-60 ℃. Preferably, the curing process is carried out in a drying box, the drying temperature is set to be 45-55 ℃, and the drying time is set to be 15-24 hours.
S8, polishing the surface of the substrate, removing floating dust on the surface of the substrate, and performing facing treatment on the stone-plastic plate by adopting an environment-friendly and energy-saving ultraviolet curing and transfer printing technology.
As shown in fig. 2 and 3, the phase change energy storage plate filled with phosphogypsum prepared by the invention comprises a substrate and a decorative layer arranged on the upper surface of the substrate, wherein the substrate is of a porous structure, the porous structure comprises a through hole penetrating through the substrate along the longitudinal direction of the substrate, a phase change energy storage material is arranged in the through hole, and end part plugging structural members are arranged at two ends of the through hole. The through holes in the substrate are arranged in groups, each group of through holes comprising at least five through holes. The substrate has an aperture ratio of 65% or more. Preferably, the side surface of the substrate has an aperture ratio of 68% to 85%, under which condition, it is convenient to inject the slurry into the substrate. The through hole in the substrate is a long hole with smooth edge, the length of the long hole is 1.6-2.0cm, and the width of the long hole is 0.8-1.0 cm. The shape of the through hole of the substrate is not limited to the elongated hole, and the shape and the size of the through hole can be square, circular or irregular according to the strength and the heat conductivity design of the substrate.
Specific examples of phase change energy storage plates filled with phosphogypsum are listed below:
examples
Table 1 shows some examples of specific contents of each component in the phase change energy storage material filled with phosphogypsum according to the present invention. It should be noted that the specific contents of the components of the phase change energy storage material filled with phosphogypsum are not limited to the data in table 1, and water is metered according to the actual water-paste ratio.
Table 1 example of the content of the components of the phase change energy storage material filled with phosphogypsum
Comparative test example
The performance of the articles of examples 1-5 were subjected to a thermal energy test. The article was placed vertically on a laboratory bench and one side of the article was heated in a box to provide heat flow for 1 hour and then stopped for three hours while the other, low temperature side of the article was tested for temperature and heat flow using a multi-point heat flow meter. Meanwhile, the performance data of the phase change energy storage plate in the prior art are compared, and the data are specifically shown in table 2.
TABLE 2 Performance test and comparison results
The phase change energy storage plate in the comparative example 1 is prepared according to an interlayer method, two surfaces of the plate are common gypsum plates, and an interlayer is a phase change material layer;
the phase change energy storage gypsum board in comparative example 2 was a phase change energy storage gypsum board prepared by directly mixing a phase change material into gypsum.
The phase change materials selected in the comparative examples 1 and 2 are organic phase change materials, and the thickness of the comparative example sample is the same as that of the example.
As can be seen from tables 1 and 2, the phase change energy storage plate of the present invention is prepared by improving the components and the ratio of the phase change energy storage material, and can store or release heat under the condition that the temperature is basically kept unchanged, so as to reduce the fluctuation of the indoor temperature, and the phase change energy storage plate prepared by filling the phase change energy storage material into the substrate has the advantages of large energy storage density, high utilization rate of phase change heat, simple process and easy implementation.
It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (10)
1. The phase change energy storage material filled with the phosphogypsum is characterized by comprising the following components:
wherein the inorganic phase change material is inorganic hydrated salt.
2. The phosphogypsum-filled phase-change energy storage material of claim 1, which comprises the following components:
the inorganic hydrated salt is Na2SO4·10H2O、CaCl2·6H2O、Na2HPO4·12H2And one or more of O.
3. The phosphogypsum-filled phase-change energy storage material of claim 2, which comprises the following components:
4. the phosphogypsum-filled phase-change energy storage material of claim 1, wherein the expanded graphite is expanded graphite with a pore size distribution of 100nm or less.
5. A phosphogypsum-filled phase-change energy storage plate as claimed in any one of claims 1 to 4, which comprises a substrate, end blocking structures arranged at both ends of the substrate and a finishing layer arranged on the upper surface of the substrate, wherein the substrate is of a porous structure comprising through holes passing through the substrate along the longitudinal direction thereof, and the phase-change energy storage material as claimed in any one of claims 1 to 4 is arranged in the through holes.
6. The phase change energy storage plate as claimed in claim 5, wherein the vias in the base plate are arranged in groups, each group comprising at least five vias.
7. The phase change energy storage plate according to claim 5, wherein the substrate has an open porosity of 65% or more.
8. The phase change energy storage plate as claimed in claim 5, wherein the through-hole in the substrate has a rectangular cross-section, the rectangle having a length of 1.6-2.0cm and a width of 0.8-1.0 cm.
9. A phase change energy storage panel according to claim 5 wherein the end blocking structures of both ends are phosphogypsum.
10. A method for preparing a phase change energy storage plate filled with phosphogypsum according to any one of claims 5-9, characterized in that it comprises the following steps:
s1, packaging one end of the substrate, and keeping the other end of the substrate open;
s2, weighing 5-38 parts by weight of inorganic phase change material, heating for melting, weighing 2-25 parts by weight of expanded graphite, mixing with the inorganic phase change material, stirring for 3-5 minutes at a speed of one circle per second, and cooling to room temperature to obtain solid mixed powder;
s3, weighing 0-1 part by weight of citric acid, 0-3 parts by weight of polypropylene fiber and 0.1-3 parts by weight of water reducing agent, adding the weighed citric acid, polypropylene fiber and water reducing agent into the solid mixed powder obtained in the step S2, and stirring for 5-6 minutes at the speed of one circle per second to obtain the composite phase change material;
s4, dispersing the composite phase change material prepared in the step S3 into 20-85 parts by weight of water, adding 20-75 parts by weight of phosphogypsum powder to prepare slurry, standing for 1-3 minutes, stirring for 30-60 seconds at a rotating speed of 1-1.5 seconds per circle by using a stirring rod, and slowing down the stirring speed to continuously stir until the slurry is thickened;
s5, the slurry which is stirred in the step S4 is poured into the substrate through one end of the opening of the substrate, and the substrate is vibrated to discharge air bubbles in the slurry;
s6 sealing the other end opening of the substrate;
s7, curing the plugged substrate in the step S6 in a dry environment for 12-24 hours to obtain the phase change energy storage plate filled with the phosphogypsum, wherein the curing temperature is set to be 40-60 ℃.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092141A (en) * | 2020-08-11 | 2020-12-18 | 北新集团建材股份有限公司 | Sandwich phase-change energy-storage gypsum board and preparation method thereof |
| CN112918043A (en) * | 2021-03-01 | 2021-06-08 | 山东尚邦建筑工程有限公司 | Decorate curtain engineering steel construction support frame |
| CN112979264A (en) * | 2021-04-20 | 2021-06-18 | 贵州国锐鑫节能科技有限公司 | Solar phase-change energy-storage temperature control plate and preparation method and application thereof |
| CN113845887A (en) * | 2021-10-26 | 2021-12-28 | 贵州理工学院 | Phosphogypsum-based composite phase change energy storage material and preparation method thereof |
| WO2022062044A1 (en) * | 2020-09-25 | 2022-03-31 | 齐鲁工业大学 | Energy-storage temperature control material, preparation method therefor and application thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215112A (en) * | 2007-12-28 | 2008-07-09 | 同济大学 | Phase-change energy-storage gypsum plate and preparation method thereof |
| CN101239798A (en) * | 2008-01-04 | 2008-08-13 | 华南理工大学 | Organic matter/expandable graphite composite phase change heat-storing building material and preparation method thereof |
| CN101832001A (en) * | 2010-04-02 | 2010-09-15 | 建研建材有限公司 | Self-temperature-adjusting phase-change energy storage plate |
| CN101943309A (en) * | 2009-07-06 | 2011-01-12 | 王广武 | Heat insulation board and manufacturing method thereof |
| CN102659377A (en) * | 2012-04-28 | 2012-09-12 | 昆明理工大学 | Thermal preservation energy saving composite phase change energy storage gypsum board prepared by using phosphorous gypsum and preparation method thereof |
| CN103525373A (en) * | 2012-07-05 | 2014-01-22 | 中国科学院大连化学物理研究所 | Composite amorphous phase-change heat storage material and preparation method thereof |
| CN104531077A (en) * | 2015-01-27 | 2015-04-22 | 云南师范大学 | Preparation method of expanded-graphite-base hydrated salt composite solid-solid phase-change energy storage material |
| CN204626828U (en) * | 2015-02-02 | 2015-09-09 | 广州能源检测研究院 | Phase-change accumulation energy inner trim panels |
| CN105060830A (en) * | 2015-08-07 | 2015-11-18 | 马鞍山十七冶工程科技有限责任公司 | Waterproof phase-change heat storing plaster wallboard formed by reinforcing straw fibers |
| CN107056210A (en) * | 2017-04-01 | 2017-08-18 | 华东理工大学 | A kind of enhanced Thistle board of energy storage, its preparation method and application |
| CN108298935A (en) * | 2018-04-10 | 2018-07-20 | 菏泽学院 | A kind of solar greenhouse wall body composite phase change energy-storing inside holding mortar and preparation method thereof |
-
2019
- 2019-01-14 CN CN201910032734.0A patent/CN111434746A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215112A (en) * | 2007-12-28 | 2008-07-09 | 同济大学 | Phase-change energy-storage gypsum plate and preparation method thereof |
| CN101239798A (en) * | 2008-01-04 | 2008-08-13 | 华南理工大学 | Organic matter/expandable graphite composite phase change heat-storing building material and preparation method thereof |
| CN101943309A (en) * | 2009-07-06 | 2011-01-12 | 王广武 | Heat insulation board and manufacturing method thereof |
| CN101832001A (en) * | 2010-04-02 | 2010-09-15 | 建研建材有限公司 | Self-temperature-adjusting phase-change energy storage plate |
| CN102659377A (en) * | 2012-04-28 | 2012-09-12 | 昆明理工大学 | Thermal preservation energy saving composite phase change energy storage gypsum board prepared by using phosphorous gypsum and preparation method thereof |
| CN103525373A (en) * | 2012-07-05 | 2014-01-22 | 中国科学院大连化学物理研究所 | Composite amorphous phase-change heat storage material and preparation method thereof |
| CN104531077A (en) * | 2015-01-27 | 2015-04-22 | 云南师范大学 | Preparation method of expanded-graphite-base hydrated salt composite solid-solid phase-change energy storage material |
| CN204626828U (en) * | 2015-02-02 | 2015-09-09 | 广州能源检测研究院 | Phase-change accumulation energy inner trim panels |
| CN105060830A (en) * | 2015-08-07 | 2015-11-18 | 马鞍山十七冶工程科技有限责任公司 | Waterproof phase-change heat storing plaster wallboard formed by reinforcing straw fibers |
| CN107056210A (en) * | 2017-04-01 | 2017-08-18 | 华东理工大学 | A kind of enhanced Thistle board of energy storage, its preparation method and application |
| CN108298935A (en) * | 2018-04-10 | 2018-07-20 | 菏泽学院 | A kind of solar greenhouse wall body composite phase change energy-storing inside holding mortar and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵云龙等: "《尾矿废渣的材料化加工与应用》", vol. 1, 中国建材工业出版社, pages: 166 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092141A (en) * | 2020-08-11 | 2020-12-18 | 北新集团建材股份有限公司 | Sandwich phase-change energy-storage gypsum board and preparation method thereof |
| CN112092141B (en) * | 2020-08-11 | 2022-03-29 | 北新集团建材股份有限公司 | Sandwich phase-change energy-storage gypsum board and preparation method thereof |
| WO2022062044A1 (en) * | 2020-09-25 | 2022-03-31 | 齐鲁工业大学 | Energy-storage temperature control material, preparation method therefor and application thereof |
| US11946246B2 (en) | 2020-09-25 | 2024-04-02 | Qilu University Of Technology | Energy-storing temperature control material and preparation method and application thereof |
| CN112918043A (en) * | 2021-03-01 | 2021-06-08 | 山东尚邦建筑工程有限公司 | Decorate curtain engineering steel construction support frame |
| CN112979264A (en) * | 2021-04-20 | 2021-06-18 | 贵州国锐鑫节能科技有限公司 | Solar phase-change energy-storage temperature control plate and preparation method and application thereof |
| CN113845887A (en) * | 2021-10-26 | 2021-12-28 | 贵州理工学院 | Phosphogypsum-based composite phase change energy storage material and preparation method thereof |
| CN113845887B (en) * | 2021-10-26 | 2023-07-14 | 贵州理工学院 | Phosphogypsum-based 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 |
| CN115259821A (en) * | 2022-07-11 | 2022-11-01 | 湖北三峡实验室 | Preparation method of phase-change phosphogypsum building block material |
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