Cement integrated board and preparation method thereof

Abstract

The invention provides a cement integrated board. The cement integrated board comprises a vacuum insulation board, fiber gridding cloth, cement mortar and a building adhesive, the vacuum heat insulation plate is placed in the middle, and the two sides of the vacuum heat insulation plate are bonded with the fiber gridding cloth through the building adhesive; the cement mortar is arranged on two sides and independently wraps the outer side of the fiber gridding cloth; wherein a circle of adhesive tape is wound around the side faces of the vacuum heat insulation plate and the fiber gridding cloth, the thickness of the composite vacuum heat insulation plate and the fiber gridding cloth ranges from 0.5 mm to 1.5 mm, and the density of the cement integrated plate is smaller than 1100 kg / m < 3 >. The invention further provides a preparation method, the overall thickness can be reduced, the space is saved, the overall weight is greatly reduced, the construction efficiency is improved, the cost is reduced, the unit area and unit volume transportation volume are increased, and the transportation cost is greatly reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal insulation materials, and in particular relates to a cement integrated board and a preparation method thereof. Background Art

[0002] As a high-quality high-temperature resistant ceramic-based composite material, sintered silicon carbide ceramics have been widely used in aerospace and other fields.

[0003] Silicon carbide ceramics are currently toughened, but they still have defects such as poor toughening effect, low density and short service life. Summary of the invention

[0004] Technical solution: In order to solve the above-mentioned technical problems, the present invention provides a cement integrated board, including a vacuum insulation board, a fiber mesh cloth, cement mortar, and a building adhesive; the vacuum insulation board is placed in the middle, and both sides are bonded to a layer of fiber mesh cloth through a layer of building adhesive; the cement mortar is provided with two sides, which are independently wrapped around the outside of the fiber mesh cloth; wherein a circle of tape is wrapped around the sides of the vacuum insulation board and the fiber mesh cloth, the thickness of the vacuum insulation board and the fiber mesh cloth after composite is 0.5-1.5mm, and the density of the cement integrated board is <1100kg / m3.

[0005] As an improvement, the construction adhesive includes hot melt adhesive and PUR adhesive. The construction adhesive is attached to the surface of the vacuum insulation panel by a roller, and the amount of adhesive applied is 150-300 g / m 3 ; or by glue spraying or glue gun, attaching it to the surface of the vacuum insulation panel, with the glue amount of 100-300g / m 3 Two people who are gluing.

[0006] As an improvement, the fiber mesh cloth can be replaced by a mesh fiber cement reinforced felt or a cement glass fiber coated felt, the thickness of a layer of mesh fiber cement reinforced felt or cement glass fiber coated felt is 0.5 to 1.5 mm, and the vacuum insulation panel and at least one layer of mesh fiber cement reinforced felt or cement glass fiber coated felt are first compounded into an integrated structure.

[0007] As an improvement, the tape includes any one of non-woven tape, masking tape, EVA foam tape, and glass fiber tape, and the tape is bonded by silicone adhesive.

[0008] As an improvement, the vacuum insulation panel includes a core material and a barrier film, and the barrier film is wrapped around the outer surface of the core material; the core material includes fumed silica, silicon carbide, high silica fiber, ceramic fiber, alumina, zirconium silicate, glass fiber, perlite, and pearlite; wherein the weight ratio is fumed silica: silicon carbide: high silica fiber + ceramic fiber + glass fiber: alumina: zirconium silicate: perlite + pearlite = 65-80:1-10:1-10:2-5:1-5:1-10.

[0009] At the same time, the present invention also provides a method for preparing a cement integrated board, and the specific steps of the preparation method are:

[0010] (1) Placing the core material in a barrier film and subjecting it to vacuum treatment to obtain a vacuum insulation panel;

[0011] (2) Use a molding mold to prepare a mixed mortar in a certain proportion. First, pour part of the mixed mortar into the center of the molding mold as the bottom mortar for laying; then arrange the fiber mesh on the mortar surface, where the length and width of the fiber mesh are slightly smaller than the length and width of the mold;

[0012] (3) Place the vacuum insulation panel on the fiber mesh cloth, the length and width of the vacuum insulation panel is slightly smaller than the length and width of the mold, then lay the second fiber mesh cloth on the vacuum insulation panel, the length and width of the fiber mesh cloth is slightly smaller than the length and width of the mold. After the laying is completed, pour the mixed mortar prepared in the previous proportion, let the mortar completely enter the mold and fill the mold, and the mortar is flush with the mold. After the above is completed, cover and press the upper surface;

[0013] (4) After the mortar solidifies, demoulding is performed to form a cement-integrated insulation board.

[0014] As an improvement, in step (2), the thickness of the bottom mortar layer is 5 to 10 mm; in step (3), the distance between the upper mortar layer and the vacuum insulation panel is 5 to 15 mm.

[0015] As an improvement, the fiber mesh cloth can be replaced by mesh fiber cement reinforced felt or cement glass fiber coated felt with a thickness of 0.5 to 1.5 mm.

[0016] As an improvement, the shape of the forming mold is at least one of a rectangle, a triangle, a pentagon, and a square.

[0017] Beneficial effect: The cement integrated board proposed by the present invention, on the one hand, replaces the conventional cement board and calcium silicate board with the vacuum insulation board, and realizes the previous insulation board thickness of 2.5-1.5mm and density greater than 1300kg / m 3 ; After comparison, the thickness can be controlled at 0.5-1.5mm, and the density is less than 1100kg / m 3The overall thickness is reduced, which saves space, greatly reduces the overall weight, improves construction efficiency, reduces costs, increases the transportation volume per unit area and unit volume, and greatly reduces transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the molding die of Example 1 of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the device of the present invention.

[0020] In the figure: surface cement mortar 5, first layer of fiber mesh cloth 3, vacuum insulation panel 2, second layer of fiber mesh cloth 4, bottom cement mortar 6. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below so that those skilled in the art can better understand the advantages and features of the present invention, thereby making a clearer definition of the protection scope of the present invention. The embodiments described in the present invention are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides a cement integrated board, comprising a vacuum insulation board 2, a fiber mesh cloth, cement mortar, and a construction adhesive; the vacuum insulation board 2 is placed in the middle, and both sides are bonded to a layer of fiber mesh cloth through a layer of construction adhesive; the cement mortar is provided with two sides, which are independently wrapped around the outside of the fiber mesh cloth; wherein a circle of tape is wrapped around the sides of the vacuum insulation board and the fiber mesh cloth, the thickness of the vacuum insulation board and the fiber mesh cloth after being composited is 0.5-1.5 mm, and the density of the cement integrated board is less than 1100 kg / m 3 .

[0023] The fiber mesh cloth can be replaced by mesh fiber cement reinforced felt or cement glass fiber coated felt, the thickness of a layer of mesh fiber cement reinforced felt or cement glass fiber coated felt is 0.5-1.5 mm, and the vacuum insulation panel and at least one layer of mesh fiber cement reinforced felt or cement glass fiber coated felt are first composited into an integrated structure.

[0024] Preferably, at least one layer is compounded on the upper surface of the vacuum insulation panel; or, at least one layer is compounded on the lower surface of the vacuum insulation panel, or at least one layer is compounded on both the upper and lower surfaces of the vacuum insulation panel.

[0025] Example 1

[0026] See Figure 2As shown, the cement integrated board comprises, from top to bottom, a surface cement mortar 5, a first layer of fiber mesh cloth 3, a vacuum insulation board 2, a second layer of fiber mesh cloth 4, and a bottom cement mortar 6.

[0027] Specifically, the core material is first installed in a barrier film, and after vacuuming, a vacuum insulation board is obtained. A mixed cement mortar is prepared in a certain proportion. First, a part of the mixed cement mortar is poured into a special forming (setting) mold, and the bottom mortar is laid first. The bottom mortar is laid with a thickness of 5 to 10 mm to form the bottom cement mortar 6.

[0028] Then place the second layer of fiber mesh cloth 4 on the surface of the mortar, the length and width of the fiber mesh cloth is slightly smaller than the length and width of the mold, and then place the vacuum insulation panel 2 on the second layer of fiber mesh cloth 4, the length and width of the vacuum insulation panel 2 is slightly smaller than the length and width of the mold, and then lay the first layer of fiber mesh cloth 3 on top of the vacuum insulation panel 2, the length and width of the fiber mesh cloth is slightly smaller than the length and width of the mold. After the laying is completed, pour the mixed mortar that has been prepared in the early stage, let the mortar completely enter the mold and fill the mold to form a surface cement mortar 5, wherein the mortar is flush with the mold, and the distance between the surface cement mortar 5 and the vacuum insulation panel 2 is 5 to 15 mm. After the above is completed, cover and pressurize the upper surface, and demold after the mortar solidifies to form a cement integrated insulation board.

[0029] Example 2

[0030] In this embodiment, the fiber mesh cloth is replaced with a mesh fiber cement reinforced felt. Specifically, the core material is placed in a barrier film, and a vacuum insulation panel is obtained after vacuum treatment. Then, the water mesh fiber cement reinforced felt is first composited on the surface and / or bottom surface of the vacuum insulation panel, at least one layer. Silicone adhesive is used for bonding during the composite process. Finally, cement mortar is placed on the top and bottom of the composite structure to form a cement integrated panel.

[0031] Example 3

[0032] In this embodiment, the fiber mesh cloth is replaced with cement glass fiber coated felt. Specifically, the core material is placed in a barrier film, and a vacuum insulation panel is obtained after vacuum treatment. Then, the cement glass fiber coated felt is first composited on the surface and / or bottom surface of the vacuum insulation panel, at least one layer. Silicone adhesive is used for bonding during the composite process. Finally, cement mortar is placed on the top and bottom of the composite structure to form a cement integrated panel.

[0033] Example 4

[0034] In the present invention, a circle of tape 7 is wrapped around the side of the composite structure of the vacuum insulation panel and the cement glass fiber coated felt or the grid fiber cement reinforced felt in Example 2 and Example 3, including at least one of EVA foam tape, non-woven tape, masking tape, EVA foam tape, and glass fiber tape.

[0035] Example 5

[0036] In the present invention, when the vacuum insulation panel and the cement glass fiber coating felt or the mesh fiber cement reinforced felt are compounded, the adhesive used includes hot melt adhesive, PUR adhesive and silicone adhesive.

[0037] Furthermore, in the present invention, hot melt adhesive and PUR adhesive are thrown into a sol box, and the adhesive is attached to the surface of the vacuum insulation panel by a roller method, and the adhesive amount is 150-300g / ㎡; the glue spraying method can also be used to spray the glue on the surface of the vacuum insulation panel, and the adhesive amount is 100-300g / ㎡. The PUR adhesive can also use a glue gun mode to attach the glue to the product surface, 100-300g / ㎡.

[0038] In the present invention, the product of Example 1 is directly bonded to the wall with cement, and is easy to construct, has good rectangularity, good firmness, and convenient connection. The product has a variety of shapes and can be used in different shapes for multiple scenes.

[0039] The products in Examples 2-4 have a controllable thickness of 0.5-1.5 mm and a density of <1100 kg / m3. The overall thickness is reduced, which saves space, greatly reduces the overall weight, improves construction efficiency, reduces costs, increases the transportation volume per unit area and unit volume, and greatly reduces transportation costs.

[0040] The conventional composite cement board was taken as a control group, and three groups of Examples 1 to 4 of the present invention were taken as test groups respectively, and performance tests were performed. The specific test results are shown in Table 1.

[0041] Table 1 Test data results

[0042]

[0043] It can be concluded from Table 1 that the product prepared by the present invention has good folding resistance and will not break until it is folded 9-12 times. The particle size is less than 0.2 mm and the thickness is 0.5-1.5 mm. The weight after compounding is greatly reduced compared with the product prepared by conventional technology, and the weight is 610-670 g. Compared with conventional products, it is light and easy to mount on the wall and fit on the wall or the location to be installed.

[0044] Example 6

[0045] The vacuum insulation panel includes a core material and a barrier film, wherein the barrier film is wrapped around the outer surface of the core material; the core material includes fumed silica, silicon carbide, high silica fiber, ceramic fiber, alumina, zirconium silicate, glass fiber, perlite, and pearlite; wherein the mass ratio is fumed silica: silicon carbide: high silica fiber+ceramic fiber+glass fiber: alumina: zirconium silicate: perlite+perlite=65-80:1-10:1-10:2-5:1-5:1-10.

[0046] In the present invention, the core material is selected from a fumed silica matrix, which plays a role of skeleton support, and its weight is preferably 65-80wt%.

[0047] In the present invention, organic or inorganic fibers are added to the core material, preferably including high silica fibers, ceramic fibers, and glass fibers, which can effectively improve the thermal insulation performance of the vacuum insulation panel, and the weight thereof is preferably 1 to 10 wt%.

[0048] In the present invention, silicon carbide is used as a sunscreen to scatter thermal radiation and reduce the radiation heat conduction of the core material, and its weight is preferably 1 to 10 wt%.

[0049] In the present invention, alumina plays a role in enhancing the strength and stability of the material, and its weight is preferably 2-5wt%.

[0050] Furthermore, zirconium silicate is used to improve the overall performance and stability of the core material in the present invention, and its weight is preferably 1-5wt%.

[0051] The present invention adds perlite and pearlite, and the weight is preferably 1-10wt%, wherein perlite and pearlite are pore-type structural materials, first, they can effectively organize the transfer of heat and improve the thermal insulation performance. Second, in the present invention, another purpose of adding perlite and pearlite is to reduce the density of the material, facilitate construction operations, and reduce the additional load of the building structure. Third, after adding, the pore structure material is used to absorb and reduce noise, and at the same time play a fireproof and antifreeze role.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A cement integrated board, characterized in that: It includes a vacuum insulation panel, a fiber mesh cloth, cement mortar, and a construction adhesive; the vacuum insulation panel is placed in the middle, and both sides are bonded to a layer of fiber mesh cloth through a layer of construction adhesive; the cement mortar is provided with two sides, which are independently wrapped around the outside of the fiber mesh cloth; a circle of tape is wrapped around the sides of the vacuum insulation panel and the fiber mesh cloth, the thickness of the vacuum insulation panel and the fiber mesh cloth after being composited is 0.5-1.5mm, and the density of the cement integrated board is less than 1100kg / m 3 .

2. The cement integrated board according to claim 1, characterized in that: The construction adhesive includes hot melt adhesive and PUR adhesive. The construction adhesive is attached to the surface of the vacuum insulation panel by a roller, and the amount of adhesive applied is 150-300g / m 3 ; or by glue spraying or glue gun, attaching it to the surface of the vacuum insulation panel, with the glue amount of 100-300g / m 3 Two people applying glue.

3. The cement integrated board according to claim 1, characterized in that: The fiber mesh cloth can be replaced by mesh fiber cement reinforced felt or cement glass fiber coated felt, the thickness of a layer of mesh fiber cement reinforced felt or cement glass fiber coated felt is 0.5-1.5 mm, and the vacuum insulation panel and at least one layer of mesh fiber cement reinforced felt or cement glass fiber coated felt are first composited into an integrated structure.

4. The cement integrated board according to claim 1, characterized in that: The adhesive tape includes any one of non-woven fabric tape, masking paper tape, EVA foam tape, and glass fiber tape, and the adhesive tape is bonded by silicone adhesive.

5. The cement integrated board according to claim 1, characterized in that: The vacuum insulation panel includes a core material and a barrier film, wherein the barrier film is wrapped around the outer surface of the core material; the core material includes fumed silica, silicon carbide, high silica fiber, ceramic fiber, alumina, zirconium silicate, glass fiber, perlite, and pearlite; wherein the weight ratio is fumed silica: silicon carbide: high silica fiber+ceramic fiber+glass fiber: alumina: zirconium silicate: perlite+perlite=65-80:1-10:1-10:2-5:1-5:1-10.

6. A method for preparing a cement integrated board, characterized in that: The specific steps of the preparation method are: (1) Placing the core material in a barrier film and subjecting it to vacuum treatment to obtain a vacuum insulation panel; (2) Use a molding mold to prepare a mixed mortar in a certain proportion. First, pour part of the mixed mortar into the center of the molding mold as the bottom mortar for laying; then arrange the fiber mesh on the mortar surface, where the length and width of the fiber mesh are slightly smaller than the length and width of the mold; (3) Place the vacuum insulation panel on the fiber mesh cloth, the length and width of the vacuum insulation panel is slightly smaller than the length and width of the mold, then lay the second fiber mesh cloth on the vacuum insulation panel, the length and width of the fiber mesh cloth is slightly smaller than the length and width of the mold. After the laying is completed, pour the mixed mortar prepared in the previous proportion, let the mortar completely enter the mold and fill the mold, and the mortar is flush with the mold. After the above is completed, cover and press the upper surface; (4) After the mortar solidifies, demoulding is performed to form a cement-integrated insulation board.

7. The method for preparing the cement integrated board according to claim 6, characterized in that: In step (2), the thickness of the bottom mortar layer is 5 to 10 mm; in step (3), the distance between the upper mortar layer and the vacuum insulation panel is 5 to 15 mm.

8. The method for preparing the cement integrated board according to claim 6, characterized in that: The fiber mesh cloth can be replaced by mesh fiber cement reinforced felt or cement glass fiber coated felt with a thickness of 0.5 to 1.5 mm.

9. The method for preparing the cement integrated board according to claim 6, characterized in that: The shape of the forming mold is at least one of a rectangle, a triangle, a pentagon, and a square.

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