Prefabricated composite wall panel and method for manufacturing the same

Abstract

The application belongs to the field of building materials, and particularly relates to a prefabricated composite wallboard and a preparation method thereof. The prefabricated composite wallboard comprises a wallboard main layer, an outer protective layer and a thermal insulation layer arranged between the wallboard main layer and the outer protective layer; a protrusion is arranged on the outer side of the wallboard main layer facing the thermal insulation layer; a connecting piece matched with the protrusion is arranged on the inner side of the outer protective layer facing the thermal insulation layer; and a fixing piece is arranged at the contact position of the protrusion and the connecting piece, and is used for fixedly connecting the wallboard main layer and the outer protective layer. The wallboard main layer and the outer protective layer are fixedly connected in the application, so that the outer protective layer is firm, the thermal insulation layer does not fall off, the cold bridge phenomenon is greatly reduced, the effective service life of the thermal insulation layer is improved while meeting the building thermal insulation requirement. In addition, the composite wallboard has simple structure, low processing difficulty and wide popularization and application value.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of building materials, and particularly relates to a prefabricated composite wallboard and a preparation method thereof. BACKGROUND

[0002] Outdoor wall surface insulation is a kind of insulation method that places the insulation layer outside the main wall material, which can effectively insulate the building itself and protect the main wall material from deformation due to temperature changes, and thus gradually becomes a hot research field in the construction industry.

[0003] However, due to the limitations of material selection, the prior art often uses more insulation materials to ensure the insulation performance when applying insulation materials to wall surface insulation, and the large self-weight cannot guarantee the stability and firmness of the insulation layer on the wall. The common method to deal with this problem is to set more metal components (such as keels, etc.) between the layers, which further leads to the frequent occurrence of cold bridge phenomenon, which causes waste of heat energy, reduces the insulation performance of the insulation material, and shortens the service life of the building.

[0004] In addition, some prior art related to composite wallboards also mentions adding photovoltaic materials outside the insulation layer to pursue the balance of energy saving and insulation effect. In this type of composite wallboard, metal connecting pieces and / or adhesive materials are often arranged between the main wall material and the insulation layer, and between the insulation layer and the photovoltaic material to ensure that the outer layer material does not fall off. However, this method not only aggravates the cold bridge phenomenon, but also increases the material cost and labor cost, which limits the practical application of this type of composite wallboard to a certain extent. Among them, the wallboard arranged in the adhesion mode has a higher risk of falling off, and there is a safety hazard of high-altitude falling objects after a certain period of use. SUMMARY

[0005] The first object of the present application is to provide a prefabricated composite wallboard, which comprises a wallboard main layer, an outer protective layer, and an insulation layer arranged between the wallboard main layer and the outer protective layer.

[0006] A protrusion is arranged on the outer side of the wallboard main layer facing the insulation layer; a connecting piece matched with the protrusion is arranged on the inner side of the outer protective layer facing the insulation layer; and a fixing piece is arranged at the contact position of the protrusion and the connecting piece to fixedly connect the wallboard main layer and the outer protective layer.

[0007] As a preferred scheme, in the prefabricated composite wallboard, the upper surface of the protrusion is parallel to the horizontal plane, and the lower surface of the protrusion forms an angle with the vertical plane of the adjacent wallboard main layer, and the angle is greater than or equal to 90°.

[0008] As a preferred scheme, in the prefabricated composite wallboard, the longitudinal section of the protrusion is rectangular or right trapezoidal.

[0009] As a preferred solution, in the prefabricated composite wall panel, a plurality of rows of protrusions are provided on the outer side of the wall panel body layer facing the thermal insulation layer, and the upper surfaces of protrusions in the same row have the same height.

[0010] As a preferred solution, in the prefabricated composite wall panel, the fixing member comprises an embedded nut and a bolt, the embedded nut is arranged in the protrusion, and the bolt is arranged on the connecting member.

[0011] As a preferred solution, in the prefabricated composite wall panel, the opening position of the embedded nut is located on the surface of the protrusion other than the bottom surface.

[0012] As a preferred solution, the protrusion is integrally formed with the wall panel body layer; and / or, the connecting member is integrally formed or assembled with the outer protective layer.

[0013] As a preferred solution, in the prefabricated composite wall panel, the contact position of the protrusion and the connecting member is covered by the thermal insulation material in the thermal insulation layer.

[0014] As a preferred solution, in the prefabricated composite wall panel, the thermal insulation material covering the contact position of the protrusion and the connecting member is a low thermal conductivity material.

[0015] As a preferred solution, the low thermal conductivity material is selected from one or more of rock wool, polyurethane, extruded polystyrene, and graphite polystyrene board.

[0016] As a preferred solution, in the prefabricated composite wall panel, the thermal insulation material of the thermal insulation layer comprises a soft fireproof thermal insulation material.

[0017] As a preferred solution, the soft fireproof thermal insulation material is selected from one or more of rock wool, glass wool, aluminum silicate wool, and expanded perlite.

[0018] As a preferred solution, in the prefabricated composite wall panel, the thermal insulation material of the thermal insulation layer comprises a soft fireproof thermal insulation material and a low thermal conductivity material, the low thermal conductivity material is arranged around the contact position of the protrusion and the connecting member, and the soft fireproof thermal insulation material is arranged at other positions.

[0019] As a preferred solution, in the prefabricated composite wall panel, the material of the wall panel body layer comprises one or more of reinforced concrete shear wall panel, external wall panel, prestressed concrete hollow wall panel, steel mesh cement wall panel, and ultra-high performance concrete (UHPC) external wall panel.

[0020] As a preferred solution, in the prefabricated composite wall panel, the material of the wall panel body layer is a whole wall panel, a vertical strip-shaped wall panel, or a horizontal strip-shaped wall panel.

[0021] As a preferred solution, in the prefabricated composite wallboard, the material of the wallboard body layer is a windowless wallboard, a windowed wallboard, a wallboard with a bay window, or a wallboard with a balcony door.

[0022] As a preferred solution, in the prefabricated composite wallboard, the material of the wallboard body layer includes a corner plate.

[0023] As a preferred solution, in the prefabricated composite wallboard, the material of the wallboard body layer includes a no-return plate and / or a return plate.

[0024] As a preferred solution, in the prefabricated composite wallboard, the material of the outer protective layer includes one or more of a glass curtain wall, a GRC composite wallboard, an ultra-high performance concrete (UHPC) outer wallboard, and a photovoltaic power generation panel.

[0025] As a preferred solution, in the prefabricated composite wallboard, the prefabricated composite wallboard further includes one or more of a line, a line, a decorative component, and a component keel.

[0026] As a preferred solution, in the prefabricated composite wallboard, a cavity is provided between the outer protective layer and the thermal insulation layer.

[0027] As a preferred solution, a cavity is provided between the outer protective layer and the thermal insulation layer, and the amount of thermal insulation material is increased at the contact position of the protrusion and the connecting piece, so that the thermal insulation material covers the contact position of the protrusion and the connecting piece.

[0028] The second object of the present application is to provide a method for manufacturing the prefabricated composite wallboard as described above, which comprises:

[0029] The thermal insulation material is laid on one side of the wallboard body layer where the protrusion is provided, and the position near the protrusion is temporarily not laid.

[0030] After the laid thermal insulation material is formed, the position near the protrusion is filled with thermal insulation material, and the outer protective layer and the wallboard body layer are fixedly connected through the fixing piece.

[0031] By fixedly connecting the wallboard body layer and the outer protective layer in the manner of the present application, not only can the outer protective layer be firmly secured and the thermal insulation layer be prevented from falling off, but also the cold bridge phenomenon can be greatly reduced, thereby meeting the building thermal insulation requirements and improving the effective service life of the thermal insulation layer. In addition, the composite wallboard of the present application has a simple structure and low processing difficulty, and has wide popularization and use value. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0033] Figure 1 The longitudinal sectional view of the prefabricated composite wallboard provided by the embodiment of the present application.

[0034] Figure 2 The schematic view of the wallboard body layer containing different shapes of protrusions provided by the embodiment of the present application.

[0035] Figure 3 The schematic view of the wallboard body layer provided with multiple rows of protrusions provided by the embodiment of the present application.

[0036] Figure 4 The schematic view of the wallboard body layer with different positions of built-in nuts provided by the embodiment of the present application.

[0037] Figure 5 The schematic view of different materials of the wallboard body layer provided by the embodiment of the present application.

[0038] Figure 6 The schematic view of the wallboard body layer containing corner plates provided by the embodiment of the present application.

[0039] Figure 7 The schematic view of the wallboard body layer without return along plates and with return along plates provided by the embodiment of the present application.

[0040] Figure 8 The longitudinal sectional view of the prefabricated composite wallboard provided by the embodiment of the present application.

[0041] Figure 9 The longitudinal sectional view of the prefabricated composite wallboard provided by the embodiment of the present application, which is provided with cavities and has different amounts of thermal insulation materials.

[0042] In the figure: 1, wallboard body layer; 11, protrusion; 111, built-in nut; 12, whole wallboard; 121, beam; 122, column; 13, vertical strip-shaped wallboard; 14, horizontal strip-shaped wallboard; 15, return along; 2, thermal insulation layer; 3, outer protective layer; 31, connecting piece. DETAILED DESCRIPTION

[0043] The specific embodiments of the present application will be described in detail below. It should be understood that the specific embodiments described herein are merely illustrative and explanatory in nature and are not intended to limit the application, and that modifications and variations can be made by those skilled in the art without departing from the scope or spirit of the application. For example, features described or illustrated as part of one embodiment can be used in another embodiment to yield a further embodiment.

[0044] Unless otherwise defined, all terms (including technical and scientific terms) used in disclosing the application herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. By further guidance, the following definitions are set forth to better define the present teachings. The terminology used in the description herein is for describing specific embodiments only and is not intended to be limiting of the application.

[0045] The alternative ranges of the terms "and / or", "or / and", "and / or" used herein include any one of two or more related listed items, and also include any and all combinations of the related listed items, including any two related listed items, any more related listed items, or all related listed items. It should be noted that when at least two conjunctions selected from "and / or", "or / and", "and / or" are combined to connect at least three items, it should be understood that in this application, the technical solution undoubtedly includes the technical solution connected by "logical and", and also undoubtedly includes the technical solution connected by "logical or".

[0046] The term "comprising" used in the present application is inclusive or open, and does not exclude additional, unmentioned members, elements or method steps.

[0047] In the present application, the descriptions such as "a plurality of", "a plurality of" and the like, if not particularly limited, refer to greater than or equal to 2 in quantity.

[0048] In the present application, the technical features described in an open manner include a closed technical solution consisting of the listed features, and also include an open technical solution containing the listed features.

[0049] In the present application, "preferably", "better", "better", "suitable" only describe the embodiments or examples with better effects, and it should be understood that they do not constitute a limitation on the protection scope of the present application. In the present application, "optionally", "optional", "optional" means that it can or can not be, that is, it is selected from any one of the two parallel schemes of "yes" or "no". If there are multiple "optional" in a technical solution, if there is no special description, and there is no contradictory relationship or mutual restriction, each "optional" is independent.

[0050] In the present application, the terms "upper surface", "lower surface", "vertical surface", "longitudinal section", "bottom surface", "vertical direction", "transverse direction" and other terms describing orientation are defined based on the use state of the prefabricated composite wallboard vertically arranged on the outside of a building, and belong to the orientation relative to this state. When the prefabricated composite wallboard is not in the above-mentioned state, the orientation corresponding to the above-mentioned terms can also be determined by those skilled in the art.

[0051] The present application first provides a prefabricated composite wallboard, a longitudinal section view of which is shown in Figure 1 The prefabricated composite wallboard specifically comprises a wallboard main layer 1, an outer protective layer 3, and a thermal insulation layer 2 arranged between the wallboard main layer 1 and the outer protective layer 3.

[0052] A protrusion 11 is arranged on the outer side of the wallboard main layer 1 facing the thermal insulation layer 2; a connecting piece 31 matched with the protrusion 11 is arranged on the inner side of the outer protective layer 3 facing the thermal insulation layer 2; and a fixing piece is arranged at the contact position of the protrusion 11 and the connecting piece 31, for fixedly connecting the wallboard main layer 1 and the outer protective layer 3.

[0053] In some embodiments, the upper surface of the protrusion 11 is parallel to the horizontal plane, and the lower surface of the protrusion 11 forms an angle with the vertical surface of the adjacent wallboard main layer 1, which is greater than or equal to 90°.

[0054] The side surface of the protrusion 11 is not particularly limited in the present application. From the perspective of convenient processing, the side surface of the protrusion 11 can be a vertical straight surface; from the perspective of increasing the contact surface, the side surface of the protrusion 11 can be an inclined surface, a curved surface or other irregular surface.

[0055] In some embodiments, the longitudinal section of the protrusion 11 is rectangular or right-angled trapezoidal. The wallboard main layer 1 containing the protrusion 11 is shown in Figure 2 .

[0056] In specific implementations, those skilled in the art can set the lower surfaces of multiple protrusions 11 on one wallboard main layer 1 to the same angle for the convenience of processing, and the structural stability has reached the requirements of buildings; or those skilled in the art can set the lower surfaces of multiple protrusions 11 on one wallboard main layer 1 to different angles within the scope of the present application, so as to form support forces with different mechanical angles between the thermal insulation layer 2 and the outer protective layer 3, thereby further improving the structural stability of the prefabricated composite wallboard.

[0057] In some embodiments, multiple rows of protrusions 11 are arranged on the outer side of the wallboard main layer 1 facing the thermal insulation layer 2, and the upper surfaces of protrusions 11 in the same row are at the same horizontal height. As shown in Figure 3 .

[0058] The structure can replace the function of the vertical keel (usually used for leveling) in the traditional composite wallboard, reducing the use of interlayer metal parts. At the same time, it is convenient to complete the leveling during the preparation of the prefabricated composite wallboard. Compared with leveling at the construction site, leveling during preparation is obviously less difficult to operate and has smaller errors.

[0059] In some embodiments, the fixing member includes an embedded nut 111 arranged in the protrusion 11 and a bolt arranged on the connecting member 31.

[0060] In some embodiments, the opening position of the embedded nut 111 is located on a surface of the protrusion 11 other than the bottom surface. This arrangement is conducive to improving the structural stability.

[0061] In some specific embodiments, a fixing member is arranged at the connecting position of the protrusion 11 and the wallboard body layer 1. In some specific embodiments, a fixing member is arranged at the connecting position of the connecting member 31 and the outer protective layer 3.

[0062] In some embodiments, the protrusion 11 and the wallboard body layer 1 are integrally formed. This also further improves the structural stability, making the prefabricated composite wallboard have better reliability and durability.

[0063] In some embodiments, the connecting member 31 and the outer protective layer 3 are integrally formed or assembled.

[0064] As shown in Figure 4 In some specific embodiments, the opening position of the embedded nut 111 is located on the upper surface of the protrusion 11. In some specific embodiments, the opening position of the embedded nut 111 is located on the side surface of the protrusion 11 close to the outer protective layer 3. In some specific embodiments, the opening position of the embedded nut 111 is located on the side surface of the protrusion 11 away from the outer protective layer 3. In order to match the connection of the outer protective plate, the embedded nut 111 can be embedded in different directions.

[0065] In some embodiments, the contact position of the protrusion 11 and the connecting member 31 is covered by the thermal insulation material in the thermal insulation layer 2. Through such an arrangement, it is conducive to further reducing the occurrence of cold bridges.

[0066] In some embodiments, the thermal insulation material wrapped around the contact position of the protrusion 11 and the connecting member 31 is a low thermal conductivity material.

[0067] As can be understood by those skilled in the art, the low thermal conductivity material generally refers to a material with a thermal conductivity less than or equal to 0.06 W / (m·K), preferably less than or equal to 0.05 W / (m·K).

[0068] In some embodiments, the low thermal conductivity material is selected from one or more of stone wool, polyurethane (PU), extruded polystyrene (XPS), graphite expanded polystyrene board (SEPS).

[0069] In some embodiments, the low thermal conductivity material is a foamed material (e.g. foamed polyurethane). This can facilitate the connection of the outer protective plate during foaming, and further facilitate the processing convenience.

[0070] In some embodiments, the thermal insulation material of the thermal insulation layer 2 comprises a soft fireproof thermal insulation material.

[0071] Due to the limitations of the existing composite wallboard structure and the performance of the thermal insulation material, in order to pursue the thermal insulation performance and control the self-weight of the thermal insulation layer, the existing composite wallboard usually selects to use a large amount of organic thermal insulation material, and such material is often flammable, which can bring great safety hazards to the building and can quickly burn in the event of a fire. The structure of the present application allows the use of a soft fireproof thermal insulation material in a large range in the thermal insulation layer, so as to realize the consideration of the stability of the building, the thermal insulation effect and the fireproof effect.

[0072] The general range of soft fireproof thermal insulation materials is known to those skilled in the art. In some embodiments, the soft fireproof thermal insulation material is selected from one or more of stone wool, glass wool, aluminum silicate wool, and expanded perlite.

[0073] In some embodiments, the thermal insulation material of the thermal insulation layer 2 comprises a soft fireproof thermal insulation material and a low thermal conductivity material, and the low thermal conductivity material is arranged around the contact position of the protrusion 11 and the connecting piece 31, and the soft fireproof thermal insulation material is arranged at other positions. This further facilitates the reduction of cold bridge phenomenon while considering the thermal insulation and fireproofing requirements.

[0074] In some embodiments, the material of the wallboard main layer 1 comprises one or more of reinforced concrete shear wallboard, externally hung wallboard, prestressed concrete hollow wallboard, steel mesh cement wallboard, and ultra-high performance concrete (UHPC) external wallboard.

[0075] As shown in Figure 5 In some embodiments, the material of the wallboard main layer 1 is an entire wallboard 12, a vertical strip-shaped wallboard 13, or a horizontal strip-shaped wallboard 14. The positional relationship between the above three wallboards and the beam 121 and the column 121 is shown in Figure 5 .

[0076] In some embodiments, the material of the wallboard main layer 1 is a wallboard without windows, a wallboard with windows, a wallboard with a bay window, or a wallboard with a balcony door.

[0077] In order to match the building structure, in some embodiments, the material of the wallboard body layer 1 comprises a corner plate, the structure of which is as shown in Figure 6 .

[0078] In some embodiments, the material of the wallboard body layer 1 comprises a no-side plate and / or a with-return-side 15 plate, as shown in Figure 7 .

[0079] In some embodiments, the material of the outer protective layer 3 comprises one or more of a glass curtain wall, a GRC composite wallboard, an ultra-high performance concrete (UHPC) outer wallboard, and a photovoltaic power generation plate. The above-mentioned outer protective layer has fireproof performance, which can avoid the thermal insulation layer from being ignited to cause a fire. The use of the photovoltaic power generation plate is also conducive to improving the utilization of light energy in the building.

[0080] In some embodiments, the prefabricated composite wallboard further comprises one or more of a line foot, a line, a decorative component, and a component batten. Those skilled in the art can add the above-mentioned components to the prefabricated composite wallboard according to the needs, which also belongs to the protection scope of the present application. It should be noted that the construction batten is only an optional solution in the present application, and the prefabricated composite wallboard of the present application can reduce or cancel the setting of the construction batten (especially the vertical batten).

[0081] The present application further finds that the thermal insulation layer arranged according to the prior art structure often causes thermal insulation failure due to steam condensation, and even causes the thermal insulation layer to fall off. In this regard, the present application further finds that by arranging a cavity between the outer protective layer 3 and the thermal insulation layer 2, the thermal insulation layer can be prevented from being damp, which is conducive to increasing the service life of the thermal insulation layer and avoiding the thermal insulation layer from falling off due to damp.

[0082] In some embodiments, a cavity is arranged between the outer protective layer 3 and the thermal insulation layer 2. In this way, a steam condensation gap can be left between the outer protective layer and the thermal insulation layer, which can prevent the thermal insulation layer from being damp.

[0083] In some embodiments, a cavity is arranged between the outer protective layer 3 and the thermal insulation layer 2, and the amount of thermal insulation material is increased at the contact position of the protrusion 11 and the connecting piece 31, so that the thermal insulation material covers the contact position of the protrusion 11 and the connecting piece 31.

[0084] The present application does not particularly limit the size of the protrusion 11, and the size of the protrusion 11 can be determined according to the thickness of the thermal insulation layer 2 in specific implementation.

[0085] The distance between the protrusions 11 and the distance between the protrusions 11 and the edge of the wallboard body layer 1 are not particularly limited in the present application, and in the specific implementation, those skilled in the art can determine the above parameters according to the size of the matched outer protective layer 3. As an example, in a specific embodiment, when the outer protective layer 3 has a width of 4200 mm and a height of 3000 mm (consistent with the corresponding wallboard body layer 1 width and height specifications), the distance between the protrusions 11 and the edge of the wallboard body layer 1 is 300 mm.

[0086] The present application also provides a preparation method of the aforementioned prefabricated composite wallboard, which comprises:

[0087] The thermal insulation material is laid on one side of the wallboard body layer 1 provided with the protrusions 11, and the position near the protrusions 11 is temporarily not laid.

[0088] After the laid thermal insulation material is formed, the position near the protrusions 11 is filled with thermal insulation material, and the outer protective layer 3 and the wallboard body layer 1 are fixedly connected through the fixing member.

[0089] In the specific implementation, those skilled in the art can confirm other detailed operations involved in the preparation method of the prefabricated composite wallboard in combination with common sense, which are not particularly limited herein.

[0090] The embodiments of the present application will be described in detail below with reference to the examples. It should be understood that these examples are only used to illustrate the present application and not to limit the scope of the present application. The experimental methods not specified in the following examples are preferred to refer to the guidance given in the present application, and can also be carried out according to the experimental manual or conventional conditions in the art, or can also refer to other experimental methods known in the art, or according to the conditions suggested by the manufacturer.

[0091] Example 1

[0092] This example first provides a prefabricated composite wallboard, the longitudinal sectional view thereof is shown in Figure 1 which specifically comprises: a wallboard body layer 1, an outer protective layer 3, and a thermal insulation layer 2 arranged between the wallboard body layer 1 and the outer protective layer 3.

[0093] Among them, a plurality of rows of protrusions 11 are arranged on the outer side of the wallboard body layer 1 facing the thermal insulation layer 2, and the protrusions 11 are integrally formed with the wallboard body layer 1. The upper surface of the protrusion 11 is parallel to the horizontal plane, and the longitudinal section is a right-angled trapezoid, and the horizontal height of the upper surface of the protrusions 11 in the same row is consistent.

[0094] A connecting member 31 matched with the protrusions 11 is arranged on the inner side of the outer protective layer 3 facing the thermal insulation layer 2.

[0095] A fixing member is arranged at the contact position of the protrusion 11 and the connecting member 31, and is used to fix and connect the wall plate body layer 1 and the outer protective layer 3. The fixing member comprises an inner nut 111 and a bolt. The inner nut 111 is arranged in the protrusion 11, and the opening position is located on the upper surface of the protrusion 11. The bolt is arranged on the connecting member 31.

[0096] The thermal insulation material of the thermal insulation layer 2 is rock wool. The thermal insulation material fills the cavity formed by the wall plate body layer 1 and the outer protective layer 3.

[0097] The material of the wall plate body layer 1 is a reinforced concrete shear wall plate, and is an entire wall plate 12.

[0098] The material of the outer protective layer 3 is a photovoltaic power generation panel.

[0099] The embodiment further provides a preparation method of the above-mentioned prefabricated composite wall plate, which comprises: laying the thermal insulation material on one side of the wall plate body layer 1 with the protrusion 11, and reserving the position near the protrusion 11 not to be laid; after the laid thermal insulation material is formed, filling the position near the protrusion 11 with the thermal insulation material, and fixing and connecting the outer protective layer 3 and the wall plate body layer 1 through the fixing member.

[0100] Based on the embodiment 1, other embodiments of the present application can be obtained by changing the above-mentioned embodiment in combination with the above-mentioned description of the embodiment.

[0101] For example, in one embodiment, the protrusion 11 in the embodiment 1 is changed to the protrusion 11 with a rectangular longitudinal section shown in FIG. 1C. Figure 2

[0102] In one embodiment, the opening position of the inner nut 111 in the embodiment 1 is changed to the side of the protrusion 11 close to the outer protective layer 3 shown in FIG. 1D. Figure 3

[0103] In one embodiment, the opening position of the inner nut 111 in the embodiment 1 is changed to the side of the protrusion 11 away from the outer protective layer 3 shown in FIG. 1E. Figure 3

[0104] In one embodiment, the thermal insulation material in the thermal insulation layer 2 of the embodiment 1 is replaced, and the thermal insulation material comprises foamed polyurethane and rock wool. The foamed polyurethane is arranged around the contact position of the protrusion 11 and the connecting member 31, and the rock wool is arranged at other positions.

[0105] ​​​The prefabricated composite wallboard can not only ensure the firmness of the outer protective layer and the non-falling of the thermal insulation layer, but also greatly reduce the cold bridge phenomenon, meet the building thermal insulation demand, and improve the effective service life of the thermal insulation layer. Meanwhile, the prefabricated composite wallboard has better fireproof performance, the thermal insulation material itself has fireproof performance, and the outer protective layer can further avoid the thermal insulation layer from being ignited to cause fire. In addition, compared with the common embedded expansion bolt mounting mode in the prior art, the prefabricated composite wallboard is safer and more durable.

[0106] In one embodiment, on the basis of embodiment 1, the thermal insulation material of the thermal insulation layer 2 is changed to glass wool, and the size of the protrusion 11 and the thickness of the thermal insulation layer 2 are changed to form a cavity between the thermal insulation layer 2 and the outer protective layer 3, and a longitudinal sectional view is as shown in Figure 8 The prefabricated composite wallboard of the embodiment not only has the advantages of the foregoing, but also can avoid the dampening of the thermal insulation layer, is beneficial to increasing the service life of the thermal insulation layer, and can avoid the falling of the thermal insulation layer caused by the dampening of the thermal insulation layer.

[0107] In one embodiment, on the basis of embodiment 1, the thermal insulation material of the thermal insulation layer 2 is changed to glass wool, the size of the protrusion 11 and the thickness of the thermal insulation layer 2 are changed to form a cavity between the thermal insulation layer 2 and the outer protective layer 3, and the amount of the thermal insulation material is increased at the contact position of the protrusion 11 and the connecting piece 31, so that the thermal insulation material covers the contact position of the protrusion 11 and the connecting piece 31, and a longitudinal sectional view is as shown in Figure 9 Compared with the prefabricated composite wallboard as shown in Figure 8 The prefabricated composite wallboard of the embodiment is beneficial to further reducing the cold bridge phenomenon.

[0108] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A prefabricated composite wall panel, characterized in that, It includes: wall panels The main layer (1), the outer protective layer (3), and the insulation layer (2) set between the main layer (1) and the outer protective layer (3) of the wall panel; A protrusion (11) is provided on the outer side of the wall panel main layer (1) facing the insulation layer (2); a connector (31) that cooperates with the protrusion (11) is provided on the inner side of the outer protective layer (3) facing the insulation layer (2); a fixing member is provided at the contact position of the protrusion (11) and the connector (31) for fixing the wall panel main layer (1) and the outer protective layer (3) to the wall panel main layer (1); The upper surface of the protrusion (11) is parallel to the horizontal plane, and the angle formed between the lower surface of the protrusion (11) and the vertical plane of the adjacent wall panel main layer (1) is greater than 90°. The longitudinal section of the protrusion (11) is a right trapezoid. Multiple rows of protrusions (11) are provided on the outer side of the wall panel main layer (1) facing the insulation layer (2), and the upper surface of the same row of protrusions (11) has the same horizontal height. The fastener includes a built-in nut (111) and a bolt. The built-in nut (111) is disposed in the protrusion (11), and the bolt is disposed on the connector (31). The opening of the built-in nut (111) is located on the upper surface of the protrusion (11). The contact points between the protrusion (11) and the connector (31) are covered by the insulation material in the insulation layer (2).

2. The prefabricated composite wall panel according to claim 1, wherein, The protrusion (11) is integrally formed with the main wall panel layer (1); And / or, the connector (31) and the outer protective layer (3) are integrally formed or assembled.

3. The prefabricated composite wall panel according to claim 1, wherein, The insulation material covering the contact area between the protrusion (11) and the connector (31) is a material with low thermal conductivity.

4. The prefabricated composite wall panel according to claim 3, wherein, The low thermal conductivity material includes one of rock wool, polyurethane, extruded polystyrene, and graphite polystyrene board.

5. The prefabricated composite wall panel according to claim 1, wherein, The insulation material of the insulation layer (2) includes soft fireproof insulation material.

6. The prefabricated composite wall panel according to claim 5, wherein, The soft fireproof and heat-insulating material includes one of rock wool, glass wool, aluminum silicate wool, and expanded perlite.

7. The prefabricated composite wall panel according to claim 3, wherein, The insulation material of the insulation layer (2) includes soft fireproof insulation material and low thermal conductivity material. Low thermal conductivity material is provided around the contact position of the protrusion (11) and the connector (31), and soft fireproof insulation material is provided in other positions.

8. The prefabricated composite wall panel according to claim 1, wherein, The main wall panel layer (1) includes one of the following: reinforced concrete shear wall panel, external wall panel, prestressed concrete hollow wall panel, wire mesh cement wall panel, and ultra-high performance concrete external wall panel.

9. The prefabricated composite wall panel according to claim 1, wherein, The main wall panel layer (1) is a whole wall panel (12), a vertical strip wall panel (13), or a horizontal strip wall panel (14).

10. The prefabricated composite wall panel according to claim 1, wherein, The main wall panel layer (1) is a windowless wall panel, a windowed wall panel, a wall panel with a bay window, or a wall panel with a balcony door.

11. The prefabricated composite wall panel according to claim 1, wherein, The main wall panel layer (1) includes corner panels.

12. The prefabricated composite wall panel according to claim 1, wherein, The main wall panel layer (1) includes a panel without an edge or a panel with a back edge (15).

13. The prefabricated composite wall panel according to claim 1, wherein, The outer protective layer (3) includes one of the following: glass curtain wall, GRC composite wall panel, ultra-high performance concrete exterior wall panel, and photovoltaic power generation panel.

14. The prefabricated composite wall panel according to claim 1, wherein, The prefabricated composite wall panel also includes one of the following: moldings, lines, decorative components, and structural keel.

15. The prefabricated composite wall panel according to claim 1, wherein, A cavity is provided between the outer protective layer (3) and the insulation layer (2).

16. The prefabricated composite wall panel according to claim 15, wherein, Increase the amount of insulation material at the contact position between the protrusion (11) and the connector (31) so that the insulation material covers the contact position between the protrusion (11) and the connector (31).

17. A method for preparing a prefabricated composite wall panel according to any one of claims 1 to 16, comprising: Insulation material is laid on the side of the wall panel main layer (1) with protrusion (11), and the area near the protrusion (11) is left un-laid for the time being; After the insulation material is laid and formed, the position near the protrusion (11) is filled with the insulation material, and the outer protective layer (3) is fixedly connected to the main wall panel layer (1) by the fastener.

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