CN113024171A - Enhanced heat-insulation decorative plate based on inorganic lightweight aggregate and preparation method - Google Patents
Enhanced heat-insulation decorative plate based on inorganic lightweight aggregate and preparation method Download PDFInfo
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- CN113024171A CN113024171A CN202110344349.7A CN202110344349A CN113024171A CN 113024171 A CN113024171 A CN 113024171A CN 202110344349 A CN202110344349 A CN 202110344349A CN 113024171 A CN113024171 A CN 113024171A
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- 238000009413 insulation Methods 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000010410 layer Substances 0.000 claims abstract description 50
- 239000011241 protective layer Substances 0.000 claims abstract description 37
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000002344 surface layer Substances 0.000 claims abstract description 4
- 239000006004 Quartz sand Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract 2
- 239000000945 filler Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000012774 insulation material Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000005871 repellent Substances 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- -1 drying Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000002671 adjuvant Substances 0.000 claims 1
- 238000004873 anchoring Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 239000000378 calcium silicate Substances 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
- 239000011491 glass wool Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
- Panels For Use In Building Construction (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides an inorganic lightweight aggregate-based enhanced heat-insulation decorative plate and a preparation method thereof, belonging to the field of energy-saving buildings. The reinforced heat-insulation decorative plate sequentially comprises a heat-insulation layer, a reinforced protective layer and a decorative surface layer, wherein the heat-insulation layer is made of a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water and is formed with the reinforced protective layer at one step; the reinforced protective layer is made of a half-dry mixture of cement, quartz sand, an additive and water, and a reinforcing net is embedded in the reinforced protective layer; the upper part of the heat-insulating layer and the four sides of the whole reinforced protective layer are in a step shape with a slight slope. The invention ensures the incombustibility, durability, anchoring reliability and impact resistance of the heat-insulating decorative plate, and shortens the production cycle of the heat-insulating decorative plate based on the inorganic light aggregate; additional panel materials are not needed, so that the load is reduced; and the shape is stable and does not deform, the quality and the safety performance of the heat-insulating decorative plate are improved, and the cost is reduced.
Description
Technical Field
The invention belongs to the field of energy-saving buildings, and particularly relates to an enhanced heat-insulation decorative plate based on inorganic light aggregate and a preparation method thereof.
Background
In energy-saving buildings, a heat insulation system is generally installed on the outer side of an outer wall. The traditional thin plastering heat insulation system has the problems of falling out, cracking and the like in practical application, and has long construction period. The heat-insulating decorative plate combines the fabricated building with the energy-saving building in a prefabricated mode, realizes integration of heat insulation and decoration, and shortens the construction period.
In the prior art, heat-insulating decorative plates are classified into organic type, organic modified type and inorganic type according to different heat-insulating materials. Wherein, the organic and organic modified heat-insulating materials are inflammable, easily cause serious fire and are gradually eliminated by the market; inorganic heat-insulating decorative board is made up by using rock wool and glass wool as heat-insulating material and using adhesive to adhere decorative board. However, in the inorganic heat-insulating decorative board, the rock wool and glass wool boards are easy to absorb moisture and expand, the shape of the heat-insulating board is repeatedly changed in the process of environmental dry-wet cycle, and a heat-insulating system is always in an unstable state, so that potential safety hazards are left; meanwhile, when the adhesive adopted in the process of compounding the heat-insulating decorative plate is used for a long time, the adhesive is easy to age and lose efficacy, so that the outer wall falling accident is caused; in addition, the decorative panel can adopt slates, calcium silicate boards or metal plates, wherein the weight of the slates per unit area is heavy, so that the external wall load is increased, the calcium silicate boards are easy to absorb moisture and deform, peel and have poor anchoring force, and the metal panel is high in density and high in cost.
Disclosure of Invention
In view of the problems in the prior art, the embodiment of the invention provides an enhanced heat-insulation decorative plate based on inorganic lightweight aggregate and a preparation method thereof, wherein a heat-insulation layer and a reinforced protective layer of the heat-insulation decorative plate are molded at one time, so that the incombustibility, durability and impact resistance of the heat-insulation decorative plate are ensured, and the production cycle of the heat-insulation decorative plate based on the inorganic lightweight aggregate is shortened; additional panel materials are not needed, so that the load is reduced; and the material of the heat-insulating layer is stable in shape and does not deform, so that the quality and the safety performance of the heat-insulating decorative plate are improved, and the cost is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the embodiment of the invention provides an enhanced thermal insulation decorative plate based on inorganic lightweight aggregate, which sequentially comprises a thermal insulation layer, an enhanced protective layer and a decorative layer; wherein,
the heat-insulating layer is made of a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water, and is formed with the reinforced protective layer in one step.
As a preferred embodiment of the invention, the heat-insulating layer and the reinforcing protective layer are formed in one step by compression molding.
As a preferred embodiment of the invention, the upper part of the heat-insulating layer and the four sides of the whole reinforcing protective layer are in a step shape with a slight slope. As a preferred embodiment of the invention, the reinforcing protective layer comprises lower layer filler, reinforcing net and upper layer filler.
As a preferred embodiment of the present invention, the reinforcing mesh is a steel mesh or a mesh cloth.
As a preferred embodiment of the invention, the additive in the heat-insulating layer comprises one or more materials of cement auxiliary agents, polymer modifiers and water repellents.
As a preferred embodiment of the present invention, the finishing layer is paint.
In a second aspect, the embodiment of the invention also provides a preparation method of the reinforced heat-insulation decorative plate based on the inorganic lightweight aggregate, and the preparation method comprises the following steps:
b, designing an upper die of the forming press, wherein the shape of the upper die is a preset shape of the reinforced protective layer;
step C, adding a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water into the lower die frame to serve as a heat insulation material, and trowelling the upper surface;
d, continuously filling the lower layer filler, the reinforcing mesh and the upper layer filler of the reinforcing protective layer on the upper surface of the heat insulation material in the lower die frame in sequence;
step E, pressing the upper die into the lower die frame through a forming press to form the heat-insulating layer and the reinforced protective layer at one time;
and F, curing the molded blank in saturated steam to form a semi-finished product, drying, and coating a finish coat on the surface to obtain the enhanced heat-insulation decorative board.
As a preferred embodiment of the present invention, before step B, the method further comprises:
and step A, when the reinforcing mesh in the reinforcing protective layer is a steel wire mesh, stamping the steel wire mesh into a step shape with four side edges provided with slopes, wherein the cross section of the step shape is the same as that of the upper die by using a stamping machine.
As a preferred embodiment of the present invention, the predetermined shape is a stepped shape with four sides having slopes.
The invention has the following beneficial effects:
1. the heat-insulating layer and the reinforcing protective layer are formed in one step in the production process, so that the process of the heat-insulating decorative plate is reduced in the construction process, the production period is shortened, and the quality of the heat-insulating decorative plate is improved;
2. the inorganic lightweight aggregate is used as the material of the heat insulation board, so that the product has good quality, is not easy to catch fire and age, has stable shape and does not deform, and the quality and the safety performance of the heat insulation decorative board are improved;
3. the finish coat is paint, which improves the product quality and reduces the production cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of an inorganic lightweight aggregate-based reinforced thermal insulation decorative board provided by an embodiment of the invention;
FIG. 2 is a schematic flow chart of a method for preparing an inorganic lightweight aggregate-based reinforced thermal insulation decorative board provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of an upper mold formed in one step in the process shown in fig. 2.
Detailed Description
The technical problems, aspects and advantages of the invention will be explained in detail below with reference to exemplary embodiments. The following exemplary embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiment of the invention provides an enhanced heat-insulation decorative plate based on inorganic lightweight aggregate, which improves the safety reliability, the use convenience and the economical efficiency of an external wall heat-insulation system and realizes large-scale batch production. As shown in fig. 1, the reinforced thermal insulation decorative board based on inorganic lightweight aggregate sequentially comprises a thermal insulation layer 1, a reinforced protective layer 2 and a finishing layer 3; the heat-insulating layer 1 is made of a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water and is formed with the reinforcing protective layer 2 in one step.
In a preferred embodiment of the present invention, the heat insulating layer 1 and the reinforcing protective layer 2 are formed in one step by compression molding.
The additive in the heat-insulating layer 1 comprises one or more materials such as a cement additive, a polymer modifier, a water repellent and the like.
The upper part of the heat-insulating layer 1 and the reinforced protective layer 2 are integrated into a step shape with slopes on four sides. The step shape with the slope on the four sides forms compaction and edge sealing of the heat insulation layer, the corresponding anchoring pieces can be arranged at the low platform of the step to complete assembly of the heat insulation decorative plates, construction is easy to achieve during assembly, and safety performance of the outer wall is guaranteed.
The reinforcing protective layer 2 comprises lower layer filler 21, reinforcing net 22 and upper layer filler 23. Wherein the reinforcing mesh is a steel mesh (e.g., a hot-dip galvanized electric welding steel mesh) or a mesh cloth (e.g., an alkali-resistant fiberglass mesh cloth). When the steel wire mesh is adopted, the steel wire mesh is required to form a step shape with slopes on four sides before preparation.
The finishing coat is paint.
The embodiment of the invention also provides a preparation method of the enhanced heat-insulation decorative plate based on the inorganic lightweight aggregate. As shown in fig. 2, the preparation method comprises the following steps:
step A, when a reinforcing mesh in a reinforcing protective layer is a steel wire mesh, firstly, stamping the steel wire mesh into a step shape with slopes on four sides, wherein the step shape is the same as that of an upper die by a stamping machine; when a scrim is used, this step is omitted.
And B, designing an upper die of the forming press, wherein the shape of the upper die is the integral preset shape of the reinforced protective layer.
And step C, adding a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water into the lower die frame to serve as a heat insulation material, and trowelling the upper surface. The thickness of the heat-insulating material is correspondingly adjusted according to actual needs.
In this step, the additive includes one or more materials such as cement additives, polymer modifiers, water repellents, and the like.
And D, continuously filling the lower layer filler, the reinforcing mesh and the upper layer filler of the reinforcing protective layer on the upper surface of the heat insulation material in the lower die frame in sequence. The filler was shown three times in figure 2 as D1, D2 and D3, respectively.
In the step, the lower-layer filler and the upper-layer filler are half-dry mixed materials of cement, quartz sand, additives and water, and the thicknesses of the lower-layer filler and the upper-layer filler are 2-4 mm. Through the adding process, a lower packing layer, the reinforcing net and an upper packing layer are formed, and finally the reinforcing protection layer embedded with the reinforcing net is formed.
And E, pressing the upper die into the die through a forming press, and forming at one time. The pressing-in process is shown in fig. 2 as E1 and E2, respectively.
And F, curing the molded blank in saturated steam to form a semi-finished product, drying, and coating a finish coat on the surface to obtain the enhanced heat-insulation decorative board.
According to the technical scheme, the reinforced heat-insulation decorative plate based on the inorganic lightweight aggregate and the preparation method thereof provided by the embodiment of the invention are characterized in that the heat-insulation decorative plate is designed into a three-layer structure sequentially comprising a heat-insulation layer based on the inorganic lightweight aggregate, a reinforcing protective layer and a decorative surface layer, the heat-insulation layer and the reinforcing protective layer are formed at one time, the shape which is convenient to assemble is formed, for example, the shape is a step shape with slightly inclined four sides, and a reinforcing net (hot galvanizing electric welding steel wire mesh or alkali-resistant glass fiber mesh cloth) is embedded in the reinforcing protective layer, so that the impact resistance and the crack resistance of the heat-insulation decorative; inorganic lightweight aggregate, cement and various additives are mixed and then compacted and maintained to be used as a material of the heat-insulating layer, and the body shape of the heat-insulating decorative plate is stable and does not deform when the environment temperature and humidity change; meanwhile, because the material is a non-combustible material, the hidden danger of fire caused by heat insulation materials is eliminated. The heat-insulating layer and the reinforced protective layer are formed in one step in the preparation method, so that the preparation process is simplified, the production period is greatly shortened, and large-scale batch production can be realized; after being formed, maintained and dried, the product is used as a semi-finished product, and then various decorative surface layers can be coated on the surface of the semi-finished product, so that the product can meet different design requirements of the outer vertical surface of a building, the product quality is improved, and the production cost is reduced.
While the foregoing is directed to the preferred embodiment of the present invention, it is understood that the invention is not limited to the exemplary embodiments disclosed, but is made merely for the purpose of providing those skilled in the relevant art with a comprehensive understanding of the specific details of the invention. It will be apparent to those skilled in the art that various modifications and adaptations of the present invention can be made without departing from the principles of the invention and the scope of the invention is to be determined by the claims.
Claims (10)
1. An enhanced heat-insulation decorative plate based on inorganic lightweight aggregate is characterized by sequentially comprising a heat-insulation layer, an enhanced protective layer and a decorative surface layer; wherein,
the heat-insulating layer is made of a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water, and is formed with the reinforced protective layer in one step.
2. The enhanced thermal insulation decorative board based on inorganic lightweight aggregate according to claim 1, wherein the thermal insulation layer and the enhanced protective layer are formed in one step by compression molding.
3. The reinforced thermal insulation decorative board based on inorganic lightweight aggregate according to claim 1, wherein the upper part of the thermal insulation layer and the whole four sides of the reinforced protective layer are in a slightly inclined step shape.
4. An enhanced thermal insulation decorative board based on inorganic lightweight aggregate according to any one of claims 1 to 3, characterized in that the enhanced protective layer adopts a semi-dry mixture of cement, quartz sand, additives and water, and is embedded with an enhanced net.
5. An inorganic lightweight aggregate-based reinforced thermal insulation decorative board according to claim 4, wherein the reinforcing mesh is a steel wire mesh or a mesh cloth.
6. An inorganic lightweight aggregate-based reinforced insulation decorative board according to claim 1, wherein the additive in the insulation layer comprises one or more materials selected from cement adjuvant, polymer modifier and water repellent.
7. An inorganic lightweight aggregate-based reinforced thermal insulation decorative board according to claim 1, wherein the finishing layer is a paint.
8. A preparation method of an enhanced heat-insulation decorative plate based on inorganic lightweight aggregate is characterized by comprising the following steps:
b, designing an upper die of the forming press, wherein the shape of the upper die is a preset shape of the reinforced protective layer;
step C, adding a semi-dry mixed material of inorganic lightweight aggregate, cement, an additive and water into the lower die frame to serve as a heat insulation material, and trowelling the upper surface;
d, continuously filling the lower layer filler, the reinforcing mesh and the upper layer filler of the reinforcing protective layer on the upper surface of the heat insulation material in the lower die frame in sequence;
step E, pressing the upper die into the lower die frame through a forming press to form the heat-insulating layer and the reinforced protective layer at one time;
and F, curing the molded blank in saturated steam to form a semi-finished product, drying, and coating a finish coat on the surface to obtain the enhanced heat-insulation decorative board.
9. The method for preparing the reinforced heat-insulation decorative plate according to claim 8, wherein before the step B, the method further comprises the following steps:
and step A, when the reinforcing mesh in the reinforcing protective layer is a steel wire mesh, stamping the steel wire mesh into a step shape with four side edges provided with slopes, wherein the cross section of the step shape is the same as that of the upper die by using a stamping machine.
10. The method for manufacturing the reinforced heat-insulating decorative plate according to claim 8, wherein the preset shape is a step shape with four sides slightly inclined.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110344349.7A CN113024171B (en) | 2021-03-31 | 2021-03-31 | Enhanced heat-insulation decorative plate based on inorganic lightweight aggregate and preparation method |
| PCT/CN2021/087420 WO2022205508A1 (en) | 2021-03-31 | 2021-04-15 | Enhanced thermal insulation decorative board based on inorganic lightweight aggregate, and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110344349.7A CN113024171B (en) | 2021-03-31 | 2021-03-31 | Enhanced heat-insulation decorative plate based on inorganic lightweight aggregate and preparation method |
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| CN113024171A true CN113024171A (en) | 2021-06-25 |
| CN113024171B CN113024171B (en) | 2021-12-14 |
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| WO (1) | WO2022205508A1 (en) |
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| CN115784768B (en) * | 2022-11-17 | 2023-11-28 | 安徽昆仑新材料科技有限公司 | General blank of permeable ceramic tile and forming method thereof |
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| CN113024171B (en) | 2021-12-14 |
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