CN115262896A - Wall board in regenerative chamber and preparation method - Google Patents
Wall board in regenerative chamber and preparation method Download PDFInfo
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- CN115262896A CN115262896A CN202210874382.5A CN202210874382A CN115262896A CN 115262896 A CN115262896 A CN 115262896A CN 202210874382 A CN202210874382 A CN 202210874382A CN 115262896 A CN115262896 A CN 115262896A
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- heat storage
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- expanded perlite
- electric heating
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 230000001172 regenerating effect Effects 0.000 title abstract description 9
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- 239000010410 layer Substances 0.000 claims abstract description 138
- 238000005485 electric heating Methods 0.000 claims abstract description 58
- 239000010451 perlite Substances 0.000 claims abstract description 56
- 235000019362 perlite Nutrition 0.000 claims abstract description 56
- 239000011232 storage material Substances 0.000 claims abstract description 45
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- 235000021355 Stearic acid Nutrition 0.000 claims description 36
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 36
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 36
- 239000008117 stearic acid Substances 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 27
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 25
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- 229910052799 carbon Inorganic materials 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 24
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
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- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
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- 229920000126 latex Polymers 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 7
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- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
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- 229910052749 magnesium Inorganic materials 0.000 description 2
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04F13/0866—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 composed of several layers, e.g. sandwich panels or layered panels
-
- 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
- C04B28/142—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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- E04F2290/02—Specially adapted covering, lining or flooring elements not otherwise provided for for accommodating service installations or utility lines, e.g. heating conduits, electrical lines, lighting devices or service outlets
- E04F2290/023—Specially adapted covering, lining or flooring elements not otherwise provided for for accommodating service installations or utility lines, e.g. heating conduits, electrical lines, lighting devices or service outlets for heating
Abstract
The invention provides a wall board in a regenerative chamber and a preparation method, wherein the wall board in the regenerative chamber comprises a regenerative layer, an adhesive layer and an electric heating layer, the regenerative layer and the electric heating layer are bonded together through the adhesive layer, a facing is formed by the electric heating layer, and the thickness of the regenerative layer is greater than or equal to 80% of that of the wall board in the regenerative chamber; the heat storage layer comprises cement and a composite heat storage material consisting of modified expanded perlite and a phase change material, the heat storage density of the heat storage layer is 30-50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer is 1:1.25 to 3. According to the invention, the modified expanded perlite and the phase-change material are combined to form the composite heat storage material, so that the cement-based wallboard can store and release heat generated by temperature fluctuation, and the energy consumption is reduced while the comfort level of a house is met.
Description
Technical Field
The invention relates to the field of building materials, in particular to a wall plate in a regenerative chamber and a preparation method thereof.
Background
The building energy consumption becomes an important component of the energy consumption of human social production activities, the building energy saving is taken as a development direction of modern technology and becomes a research subject which is widely regarded by the building industry at home and abroad, and the development of a building energy saving structural system is one of the keys of relieving the contradiction of energy shortage in China, improving the quality of the living environment of people, reducing the environmental pollution and realizing the strategic goal of sustainable development.
In the whole building structure, the characteristics of the wall material greatly determine the level of building energy consumption. In the existing buildings, wallboard products (such as calcium silicate boards, gypsum boards, glass magnesium boards and the like) are used as sensible heat materials, are easily influenced by external environment temperature fluctuation, cannot effectively achieve the energy-saving purpose, and cause loss of a large amount of heat.
Disclosure of Invention
The invention aims to solve the technical problem that the building wall material cannot effectively realize energy conservation, and provides a wall plate in a regenerator and a preparation method thereof.
The technical scheme for solving the technical problem is that the wall plate in the heat storage chamber comprises a heat storage layer, an adhesive layer and an electric heating layer, wherein the heat storage layer and the electric heating layer are adhered together through the adhesive layer, a facing is formed by the electric heating layer, and the thickness of the heat storage layer is greater than or equal to 80% of that of the wall plate in the heat storage chamber; the heat storage layer comprises cement and a composite heat storage material consisting of modified expanded perlite and a phase change material, the heat storage density of the heat storage layer is 30-50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer is 1:1.25 to 3.
As a further improvement of the invention, the heat storage layer is formed by mechanically stirring, mixing, molding and curing the following components in parts by mass: 100 to 150 portions of cement, 50 to 80 portions of composite heat storage material, 5 to 10 portions of lime powder, 25 to 50 portions of phosphogypsum, 2 to 3 portions of redispersible latex powder, 1 to 2 portions of cellulose ether and 80 to 120 portions of water.
As a further improvement of the invention, the modified expanded perlite comprises expanded perlite, and a carbon film and TiO film which are sequentially formed on the surface of the expanded perlite by adopting a vapor deposition method2A film;
the phase-change material is stearic acid, and the composite heat storage material is formed by melting and mixing completely melted stearic acid and modified expanded perlite, mechanically stirring uniformly and cooling.
As a further improvement of the invention, the electric heating layer comprises a polyethylene terephthalate decorative film and a surface layer formed by drying mixed liquid coated on the polyethylene terephthalate decorative film, and the mixed liquid comprises the following components in parts by mass: 20 parts of nano-scale carbon fiber material, 70 parts of Ketjen black, 10 parts of polyvinylidene fluoride and 70 parts of N-methyl pyrrolidone; the nano-scale carbon fiber material is obtained by performing heat treatment on polyacrylonitrile spinning.
As a further improvement of the invention, the thickness of the heat storage layer is 6-28 mm, and the thickness of the electric heating layer is 1-3 mm.
The invention also provides a preparation method of the wall plate in the regenerator, which comprises the following steps:
preparing a heat storage layer, wherein the heat storage layer comprises cement and a composite heat storage material consisting of modified expanded perlite and a phase-change material, the heat storage density of the heat storage layer is 30-50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer is 1:1.25 to 3;
preparing an electric heating layer;
and bonding the heat storage layer and the electric heating layer to form a wall plate in the heat storage chamber, wherein the electric heating layer forms a veneer of the wall plate in the heat storage chamber.
As a further improvement of the present invention, the preparation of the heat storage layer includes:
mechanically stirring and mixing the following components in parts by weight, and forming and maintaining the mixture: 100 to 150 portions of cement, 50 to 80 portions of composite heat storage material, 5 to 10 portions of lime powder, 25 to 50 portions of phosphogypsum, 2 to 3 portions of redispersible latex powder, 1 to 2 portions of cellulose ether and 80 to 120 portions of water.
As a further improvement of the present invention, the phase change material is stearic acid, and the composite heat storage material is prepared by the following steps:
coating a layer of carbon film on the surface of the expanded perlite by adopting a vapor deposition method;
depositing a layer of TiO on the surface of the expanded perlite coated with the carbon film2Forming a film into modified expanded perlite;
and melting and mixing the completely melted stearic acid with the modified expanded perlite, mechanically stirring, and completely adsorbing the stearic acid by the modified expanded perlite to obtain the composite heat storage material.
As a further improvement of the invention, the carbon source of the carbon film is acetylene; the TiO is2The titanium source of the film is TiCl4And (3) solution.
As a further improvement of the present invention, the preparing of the electric heating layer comprises:
mixing the following components in parts by mass to form a solution: 10 parts of polyacrylonitrile and 90 parts of dimethylformamide, and subjecting the solution to an electrostatic spinning process to obtain PAN (polyacrylonitrile) spinning with a three-dimensional nano structure;
carrying out heat treatment on the PAN spinning to obtain a nano-scale carbon fiber material, and mixing the following components in parts by mass to form a mixed powder: 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride;
mixing the following components in parts by mass to obtain a mixed solution: 30 parts of mixed powder and 70 parts of N-methyl pyrrolidone;
uniformly coating the mixed solution on a polyethylene terephthalate decorative film and drying to form a conductive layer;
and mounting electrodes at two ends of the conductive layer to obtain the electric heating layer.
The invention has the following beneficial effects: the composite heat storage material is formed by combining the modified expanded perlite and the phase-change material, so that the cement-based wallboard can store and release heat generated by temperature fluctuation, and the energy consumption is reduced while the comfort level of a house is met.
Drawings
FIG. 1 is a schematic view of a wall panel within a regenerator provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic flow diagram of a method for making a wall panel in a regenerator according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of the process for preparing the heat storage layer in the method for preparing the wall plate in the heat storage chamber according to the embodiment of the invention;
fig. 4 is a schematic flow chart of the process for preparing the electric heating layer in the preparation method of the wall board in the regenerator provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following will clearly and completely describe the concept and technical effects of the present invention in connection with the embodiments, so as to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
Fig. 1 is a schematic view of a regenerator inner wall plate according to an embodiment of the present invention, which may be directly attached to a surface of an inner wall, for example, by using cement mortar or dry hanging, to decorate the wall. Wallboard in regenerator of this embodiment includes regenerator 11, gluing agent layer 12 and electric heating layer 13, and regenerator 11 and electric heating layer 13 bond together through gluing layer 12 to constitute the veneer by electric heating layer 13, when the wallboard is attached to the wall body surface in regenerator promptly, regenerator 11 is direct to be pasted with the surface of wall body mutually, and electric heating layer 13 is then the surface of wall body dorsad.
In this embodiment, the heat storage layer 11 includes cement and a composite heat storage material composed of modified expanded perlite and a phase change material, the heat storage density of the heat storage layer 11 is 30 to 50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer 11 is 1:1.25 to 3. In the wall panel in the regenerator, the thickness of the heat storage layer 11 accounts for more than 80% of the whole thickness of the wall panel in the regenerator, for example, the thickness of the heat storage layer 11 is 6 to 28mm, the thickness of the adhesive layer 12 is about 1mm, and the thickness of the electric heating layer 13 is 1 to 3mm. Because the heat storage layer 11 takes cement as a main body, the wall plate in the heat storage chamber has higher structural strength, can be constructed by adopting a process similar to the existing paving and pasting mode, and has relatively lower requirements on use occasions and construction processes.
The wallboard in the regenerator combines the modified expanded perlite and the phase-change material to form the composite heat storage material, and the composite heat storage material absorbs heat in a phase-change manner when the temperature of the wall is higher (such as day) and absorbs heat in a phase-change manner when the temperature is lower (such as night), so that the cement-based wallboard can store and release heat when the temperature fluctuates, and the energy consumption is reduced while the house comfort level is met.
In addition, the composite heat storage material composed of the modified expanded perlite and the phase change material releases heat in a far infrared ray releasing mode, and better living experience can be brought to a resident. The back radiation temperature of the electric heating layer 13 in the heating process is stored through the heat storage material of the heat storage layer 11, so that the building energy consumption can be reduced, and the influence of temperature fluctuation is avoided. Meanwhile, due to the existence of the electric heating layer 13, when the internal structure of the heat storage layer 11 changes, the external conductive current and the resistance change accordingly, so that the danger caused by the leakage of large current is avoided.
In an embodiment of the present invention, the heat storage layer 11 may be formed by mechanically stirring, mixing, molding and curing the following components in parts by weight: 100 to 150 portions of cement, 50 to 80 portions of composite heat storage material, 5 to 10 portions of lime powder, 25 to 50 portions of phosphogypsum, 2 to 3 portions of redispersible latex powder, 1 to 2 portions of cellulose ether and 80 to 120 portions of water. Through the components and the proportion, the wallboard in the regenerator can not only meet the requirement of compression resistance, but also meet the requirements of fire prevention, heat insulation, heat storage and the like. Meanwhile, the use of the phosphogypsum also provides a new path for the application of the phosphogypsum, and solves the problems of open-air stacking and resource treatment of the existing phosphogypsum.
In particular, the modified expanded perlite comprises expanded perlite, and a carbon film and TiO which are sequentially formed on the surface of the expanded perlite by adopting a vapor deposition method2A film; the phase-change material is stearic acid (the melting point is 68 ℃, and the phase-change enthalpy is 221J/g), and the composite heat storage material is formed by melting and mixing completely melted stearic acid and modified expanded perlite, mechanically stirring uniformly and cooling. The surface of the expanded perlite is coated with a layer of carbon film, so that the problem of low heat transfer capacity of the expanded perlite can be solved, and heat can be rapidly stored and released; and TiO 22The film can better realize the adsorption of the phase-change material and realize the maximum adsorption and heat storage.
In an embodiment of the present invention, the electric heating layer 13 includes a polyethylene terephthalate (PET) decorative film and a surface layer formed by drying a mixed solution coated on the PET decorative film, and the mixed solution includes the following components in parts by mass: 20 parts of nano-scale carbon fiber material, 70 parts of Ketjen black, 10 parts of polyvinylidene fluoride and 70 parts of N-methyl pyrrolidone, wherein the nano-scale carbon fiber material is obtained by performing heat treatment on polyacrylonitrile spinning.
Compared with the common wallboard of the calcium silicate board (directly purchased from the market and having no heating and heat storage functions) compounded with the electric heating film, the surface temperature of the wallboard is 13 ℃ higher than that of the wallboard in the heat storage chamber of the invention under the same condition (the same thickness, the same heating time and the same room size) after the wallboard passes through the electric heating film for 30 min; compared with the common gypsum board (directly purchased from the market and having no heating and heat storage functions), the wallboard of the composite electric heating film has the surface temperature which is 11 ℃ higher than that of the wallboard in the heat storage chamber under the same condition (the same thickness, the same heating power, the same heating time and the same room size) after the wallboard passes through the electric heating film for 30 min; compared with the common glass magnesium board (directly purchased from the market and having no heating and heat storage functions) composite electric heating film wallboard, the surface temperature of the wallboard is 12 ℃ higher than that of the wallboard in the heat storage chamber of the invention under the same condition (the same thickness, the same heating power, the same heating time and the same room size) after the wallboard passes through the electric heating film for 30 min. The results show that the wall plate in the regenerator has good temperature control effect.
As shown in FIG. 2, the present invention also provides a method for preparing an interior wallboard of a regenerator, comprising the steps of:
step S1: preparing a heat storage layer, wherein the heat storage layer comprises cement and a composite heat storage material consisting of modified expanded perlite and a phase change material, the heat storage density of the heat storage layer is 30-50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer is 1:1.25 to 3. The thickness of the heat storage layer may be 10 to 30mm.
Step S2: an electric heating layer is prepared, which has a thickness of about one tenth of the thickness of the thermal storage layer, for example, the thickness of the electric heating layer may be 1mm.
And step S3: and bonding the heat storage layer and the electric heating layer to form the wall board in the heat storage chamber, wherein the veneer of the wall board in the heat storage chamber is formed by the electric heating layer.
In practical applications, the sequence of step S1 and step S2 is not limited, or step S1 and step S2 may be performed simultaneously. In addition, the heat storage layer and the electric heating layer with larger sizes can be prepared in the step S1 and the step S2 respectively, and the heat storage layer and the electric heating layer are bonded and then cut into a set size to obtain the wall board in the heat storage chamber.
Referring to fig. 3, in an embodiment of the present invention, the phase-change material is stearic acid (melting point 68 ℃, enthalpy of phase change 221J/g), and accordingly, the heat storage layer may be prepared by:
s11: coating a layer of carbon film (acetylene is used as a carbon source, the reaction temperature is 600 ℃, and the reaction time is 8 hours) on the surface of the expanded perlite by adopting a vapor deposition method (CVD);
s12: further depositing a layer of TiO on the surface of the expanded perlite coated with the carbon film2Film (TiCl)4The solution is a titanium source, the deposition temperature is 360 ℃, and the deposition time is 6-10 h), so as to obtain the modified expanded perlite;
s13: completely melting stearic acid, mixing with the modified expanded perlite in a melting way, mechanically stirring, and obtaining the composite heat storage material after the stearic acid is completely adsorbed by the modified expanded perlite;
s14: the following components in parts by mass: 100 to 150 parts of cement, 50 to 80 parts of composite heat storage material, 5 to 10 parts of lime powder, 25 to 50 parts of phosphogypsum, 2 to 3 parts of redispersible latex powder, 1 to 2 parts of cellulose ether and 80 to 120 parts of water are mechanically stirred and mixed, and the mixture is formed and cured (for example, formed by a mold) to obtain the heat storage layer.
In one embodiment of the present invention, as shown in fig. 4, the above electric heating layer may be prepared by the following steps:
step S21: 10 parts by mass of Polyacrylonitrile (PAN) is dissolved in 90 parts by mass of Dimethylformamide (DMF) to prepare a solution, and the PAN spinning with the three-dimensional nanostructure is obtained through an electrostatic spinning process.
Step S22: drying the PAN spinning at 90 ℃ for 10h, and further carrying out heat treatment at 450 ℃ to obtain the nano-scale carbon fiber material.
Step S23: mechanically mixing the following components in parts by mass to obtain mixed powder: 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride.
Step S24: mixing the following components in parts by mass to obtain a mixed solution: 30 parts of mixed powder and 70 parts of N-methyl pyrrolidone.
Step S25: uniformly coating the mixed solution on a polyethylene terephthalate (PET) decorative film and drying to form a conductive layer;
step S26: and mounting electrodes at two ends of the conducting layer to obtain the electric heating layer.
An example of a method of making a wallboard in a regenerator is as follows.
Example 1
A1, coating a layer of carbon film (acetylene is used as a carbon source, the reaction temperature is 600 ℃ and the reaction time is 8 hours) on the surface of the expanded perlite by adopting a CVD (chemical vapor deposition) process, and further depositing a layer of TiO on the surface of the expanded perlite coated with the carbon film2Film (TiCl)4The solution is a titanium source, the deposition temperature is 360 ℃, and the deposition time is 6-10 h);
a2, selecting a phase-change heat storage material as stearic acid (the melting point is 68 ℃, the phase-change enthalpy is 221J/g), heating the stearic acid until the stearic acid is completely melted, melting and mixing the stearic acid and the modified expanded perlite, and mechanically stirring the mixture until the stearic acid is completely adsorbed by the modified expanded perlite to obtain a composite heat storage material;
a3, mechanically stirring and mixing the materials according to the mass parts of 100 parts of cement, 50 parts of composite heat storage material, 5 parts of lime powder, 25 parts of phosphogypsum, 2 parts of redispersible latex powder, 1 part of cellulose ether and 80 parts of water, and then forming and curing to obtain a heat storage layer of the wallboard in the heat storage chamber;
a4, dissolving 10 parts by mass of Polyacrylonitrile (PAN) in 90 parts by mass of DMF liquid to prepare a solution, obtaining PAN spinning with a three-dimensional nano structure through an electrostatic spinning process, drying for 10 hours at 90 ℃, and then further performing heat treatment at 450 ℃ to obtain a nano-scale carbon fiber material;
a5, mechanically mixing 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride, further mechanically mixing 30 parts of the obtained powder with 70 parts of N-methyl pyrrolidone, coating the mixture on a PET decorative film, drying, and mounting electrodes at two ends to obtain an electric heating layer of the wallboard in the regenerator;
and A6, bonding the heat storage layer and the electric heating layer to form the wall plate in the heat storage chamber.
Through tests, the heat storage density of the wall plate in the regenerator prepared in the steps A1-A6 is 36.8J/g, the compressive strength is 1.4MPa, the fire-resistant grade is A grade, and no leakage exists after 100 phase change cycles. The electric heating conversion efficiency of the electric heating layer is 99 percent, the far infrared ray emission efficiency of the surface heat source is 83 percent, and the electric heating layer does not attenuate when running for 300 hours under the condition of 1.35 times of rated voltage.
Example 2
B1, coating a layer of carbon film (acetylene is used as a carbon source, the reaction temperature is 600 ℃, and the reaction time is 8 hours) on the surface of the expanded perlite by adopting a CVD (chemical vapor deposition) process, and further depositing a layer of TiO on the surface of the expanded perlite coated with the carbon2Film (TiCl)4The solution is a titanium source, the deposition temperature is 360 ℃, and the deposition time is 6-10 h);
b2, selecting stearic acid as a phase-change material (the melting point is 68 ℃, and the phase-change enthalpy is 221J/g), heating the stearic acid until the stearic acid is completely melted, melting and mixing the stearic acid and the modified expanded perlite, and mechanically stirring until the stearic acid is completely adsorbed by the modified expanded perlite to obtain the composite heat storage material;
b3, mechanically stirring and mixing the materials according to the mass parts of 120 parts of cement, 60 parts of composite heat storage material, 7 parts of lime powder, 35 parts of phosphogypsum, 3 parts of redispersible latex powder, 2 parts of cellulose ether and 90 parts of water, and then forming and curing to obtain a heat storage layer of the wallboard in the heat storage chamber;
b4, dissolving 10 parts by mass of Polyacrylonitrile (PAN) in 90 parts by mass of DMF liquid to prepare a solution, obtaining PAN spinning with a three-dimensional nano structure through an electrostatic spinning process, drying for 10 hours at 90 ℃, and then further performing heat treatment at 450 ℃ to obtain a nano-scale carbon fiber material;
and B5, mechanically mixing 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride, further mechanically mixing the obtained powder (30 parts) with N-methylpyrrolidone (NMP) (70 parts), coating on a PET decorative film, drying, and mounting electrodes at two ends to obtain the electric heating layer of the wall plate in the regenerator.
And B6, bonding the heat storage layer and the electric heating layer to form the wall plate in the heat storage chamber.
Through tests, the heat storage density of the wall plate in the regenerator prepared in the steps B1-B6 is 39.7J/g, the compressive strength is 2.8MPa, the fire-resistant grade is A grade, and no leakage exists after 100 phase change cycles. The electric heating conversion efficiency of the electric heating layer is 99%, and the far infrared ray emission efficiency of the surface heat source is 83%, and the electric heating layer can operate under the condition of 1.35 times of rated voltage for 300 hours without attenuation.
Example 3
C1, coating a layer of carbon film (acetylene is used as a carbon source, the reaction temperature is 600 ℃ and the reaction time is 8 hours) on the surface of the expanded perlite by adopting a CVD (chemical vapor deposition) process, and further depositing a layer of TiO on the surface of the expanded perlite coated with the carbon2Film (TiCl)4The solution is a titanium source, the deposition temperature is 360 ℃, and the deposition time is 6-10 h);
c2, selecting common stearic acid as a phase-change heat storage material (the melting point is 68 ℃, and the phase-change enthalpy is 221J/g), heating the stearic acid until the stearic acid is completely melted, melting and mixing the stearic acid and the modified expanded perlite, and mechanically stirring the mixture until the stearic acid is completely adsorbed by the modified expanded perlite to obtain a composite heat storage material;
c3, mechanically stirring and mixing 135 parts by mass of cement, 70 parts by mass of composite heat storage material, 8 parts by mass of lime powder, 40 parts by mass of phosphogypsum, 3 parts by mass of redispersible latex powder, 2 parts by mass of cellulose ether and 100 parts by mass of water, and then forming and curing to obtain a heat storage layer of the wallboard in the heat storage chamber;
c4, dissolving 10 parts by mass of Polyacrylonitrile (PAN) in 90 parts by mass of DMF liquid to prepare a solution, obtaining PAN spinning with a three-dimensional nano structure through an electrostatic spinning process, drying for 10 hours at 90 ℃, and then further performing heat treatment at 450 ℃ to obtain a nano-scale carbon fiber material;
c5, mechanically mixing 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride, further mechanically mixing 30 parts of the obtained powder with 70 parts of N-methyl pyrrolidone (NMP), coating on a PET decorative film, drying, and mounting electrodes at two ends to obtain an electric heating layer of the wallboard in the regenerator;
and C6, bonding the heat storage layer and the electric heating layer to form the wall plate in the heat storage chamber.
Through tests, the heat storage density of the wall plate in the regenerator prepared by the steps C1-C6 is 43.4J/g, the compressive strength is 3.2MPa, the fire-proof grade is A grade, and no leakage exists after 100 phase change cycles. The surface heating film has electrothermal conversion efficiency of 99% and far infrared ray emitting efficiency of 83%, and operates at 1.35 times of rated voltage for 300 hr without attenuation.
Example 4
D1, coating a layer of carbon film (acetylene is used as a carbon source, the reaction temperature is 600 ℃, and the reaction time is 8 hours) on the surface of the expanded perlite by adopting a CVD (chemical vapor deposition) process, and further depositing a layer of TiO on the surface of the expanded perlite coated with the carbon2Film (TiCl)4The solution is a titanium source, the deposition temperature is 360 ℃, and the deposition time is 6-10 h);
d2, selecting stearic acid as a phase-change heat storage material (the melting point is 68 ℃, and the phase-change enthalpy is 221J/g), heating the stearic acid until the stearic acid is completely melted, melting and mixing the stearic acid and the modified expanded perlite, and mechanically stirring the mixture until the stearic acid is completely adsorbed by the modified expanded perlite to obtain a composite heat storage material;
d3, mechanically stirring and mixing 150 parts of cement, 80 parts of composite heat storage material, 10 parts of lime powder, 50 parts of phosphogypsum, 3 parts of redispersible latex powder, 2 parts of cellulose ether and 120 parts of water according to the parts by weight, and then forming and curing to obtain a heat storage layer of the wallboard in the heat storage chamber;
d4, dissolving 10 parts by mass of Polyacrylonitrile (PAN) in 90 parts by mass of DMF (dimethyl formamide) liquid to prepare a solution, obtaining PAN spinning with a three-dimensional nano structure through an electrostatic spinning process, drying at 90 ℃ for 10 hours, and then further carrying out heat treatment at 450 ℃ to obtain a nano-scale carbon fiber material;
d5, mechanically mixing 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride, further mechanically mixing 30 parts of the obtained powder with 70 parts of N-methyl pyrrolidone (NMP), coating on a PET decorative film, drying, and mounting electrodes at two ends to obtain an electric heating layer of the wallboard in the regenerator;
and D6, bonding the heat storage layer and the electric heating layer to form the wall plate in the heat storage chamber.
Through tests, the heat storage density of the wall plate in the heat storage chamber prepared in the steps D1-D6 is 44.8J/g, the compressive strength is 3.4MPa, the fire-proof grade is A grade, and no leakage exists after 100 phase change cycles. The surface heating film has electrothermal conversion efficiency of 99% and far infrared ray emitting efficiency of 83%, and has no attenuation after running for 300 hr under 1.35 times of rated voltage.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The wallboard in the heat storage chamber is characterized by comprising a heat storage layer, an adhesive layer and an electric heating layer, wherein the heat storage layer and the electric heating layer are bonded together through the adhesive layer, the electric heating layer forms a veneer of the wallboard in the heat storage chamber, and the thickness of the heat storage layer is greater than or equal to 80% of that of the wallboard in the heat storage chamber; the heat storage layer comprises cement and a composite heat storage material consisting of modified expanded perlite and a phase change material, the heat storage density of the heat storage layer is 30-50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer is 1:1.25 to 3.
2. The regenerator interior wall panel of claim 1, wherein the heat storage layer is formed by mechanically stirring, mixing, molding and curing the following components in parts by mass: 100 to 150 portions of cement, 50 to 80 portions of composite heat storage material, 5 to 10 portions of lime powder, 25 to 50 portions of phosphogypsum, 2 to 3 portions of redispersible latex powder, 1 to 2 portions of cellulose ether and 80 to 120 portions of water.
3. The regenerator interior wall panel of claim 1, wherein the modified expanded perlite comprises expanded perlite and a carbon film and TiO film sequentially formed on the surface of the expanded perlite by vapor deposition2A film;
the phase-change material is stearic acid, and the composite heat storage material is formed by melting and mixing completely melted stearic acid and modified expanded perlite, mechanically stirring uniformly and cooling.
4. The wall plate in the heat storage chamber as claimed in claim 1, wherein the electric heating layer comprises a polyethylene terephthalate decorative film and a surface layer formed by drying a mixed solution coated on the polyethylene terephthalate decorative film, and the mixed solution comprises the following components in parts by mass: 20 parts of nano-scale carbon fiber material, 70 parts of Ketjen black, 10 parts of polyvinylidene fluoride and 70 parts of N-methyl pyrrolidone; the nano-scale carbon fiber material is obtained by performing heat treatment on polyacrylonitrile spinning.
5. The regenerator interior wall panel of claim 1, wherein the thickness of the heat storage layer is 6-28 mm and the thickness of the electrical heating layer is 1-3 mm.
6. A preparation method of a wall plate in a regenerator is characterized by comprising the following steps:
preparing a heat storage layer, wherein the heat storage layer comprises cement and a composite heat storage material consisting of modified expanded perlite and a phase-change material, the heat storage density of the heat storage layer is 30-50J/g, and the mass part ratio of the composite heat storage material to the cement in the heat storage layer is 1:1.25 to 3;
preparing an electric heating layer;
and bonding the heat storage layer and the electric heating layer to form a wall plate in the heat storage chamber, and forming a decorative surface of the wall plate in the heat storage chamber by the electric heating layer.
7. The method of making a regenerator interior wall panel of claim 6, wherein said preparing a heat storage layer comprises:
mechanically stirring and mixing the following components in parts by weight, and forming and maintaining: 100 to 150 parts of cement, 50 to 80 parts of composite heat storage material, 5 to 10 parts of lime powder, 25 to 50 parts of phosphogypsum, 2 to 3 parts of redispersible latex powder, 1 to 2 parts of cellulose ether and 80 to 120 parts of water.
8. The method of making a regenerator interior wall panel of claim 6, wherein said phase change material is stearic acid and said composite heat storage material is prepared by:
coating a layer of carbon film on the surface of the expanded perlite by adopting a vapor deposition method;
depositing a layer of TiO on the surface of the expanded perlite coated with the carbon film2Forming the film into modified expanded perlite;
and melting and mixing the stearic acid and the modified expanded perlite after the stearic acid is completely melted, and mechanically stirring the mixture to obtain the composite heat storage material after the stearic acid is completely adsorbed by the modified expanded perlite.
9. The method for producing the regenerator interior wall plate of claim 8, wherein the carbon source of the carbon film is acetylene; the TiO is2The titanium source of the film is TiCl4And (3) solution.
10. The method of making a regenerator interior wall panel of claim 6, wherein said preparing an electrical heating layer comprises:
mixing the following components in parts by mass to form a solution: 10 parts of polyacrylonitrile and 90 parts of dimethylformamide, and subjecting the solution to an electrostatic spinning process to obtain PAN (polyacrylonitrile) spinning with a three-dimensional nano structure;
carrying out heat treatment on the PAN spinning to obtain a nano-scale carbon fiber material, and mixing the following components in parts by mass to form a mixed powder: 20 parts of carbon fiber material, 70 parts of Ketjen black and 10 parts of polyvinylidene fluoride;
mixing the following components in parts by mass to obtain a mixed solution: 30 parts of mixed powder and 70 parts of N-methyl pyrrolidone;
uniformly coating the mixed solution on a polyethylene terephthalate decorative film and drying to form a conductive layer;
and mounting electrodes at two ends of the conductive layer to obtain the electric heating layer.
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