CN111300598A - Method for improving interlayer bonding force of fiber-reinforced building board - Google Patents
Method for improving interlayer bonding force of fiber-reinforced building board Download PDFInfo
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- CN111300598A CN111300598A CN202010180969.7A CN202010180969A CN111300598A CN 111300598 A CN111300598 A CN 111300598A CN 202010180969 A CN202010180969 A CN 202010180969A CN 111300598 A CN111300598 A CN 111300598A
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- building board
- wet blank
- bonding force
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- reinforced building
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- 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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
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- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0062—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects forcing the elements into the cast material, e.g. hooks into cast concrete
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- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
A method for improving the interlayer bonding force of a fiber reinforced building board comprises the following basic steps: a. the forming cylinder is rotated to increase slurry layer by layer to form a wet blank; b. the wet blank is peeled off after reaching the required thickness and is pulled to a flat working platform for flattening; b. pricking the grid needle into the wet blank; c. and (3) sequentially carrying out pressurization, steam curing and other treatments on the wet blank inserted with the grid needles to obtain the fiber reinforced building board with improved interlayer bonding force. The grid needle of the invention: the material can be, but is not limited to, various engineering plastics and metals; the shapes and the sizes of the needles and the grids can be comprehensively designed according to the size of the binding force improvement requirement; the size of the assembled wet blank is consistent with that of the wet blank; the insertion can be performed manually or mechanically. The method of the invention is easy to combine with the prior conventional production line of a sheet-making method or a pulp-flowing method, has no limit to material components, thickness and the like, and greatly improves the performance of the obtained fiber reinforced building board product with improved interlayer binding force.
Description
Technical Field
The invention relates to the field of novel building materials, in particular to a preparation method of a novel fiber reinforced building board.
Background
The fiber reinforced building board is one kind of building material prepared with cement or calcium silicate as base material, various kinds of fiber as reinforcing material and various kinds of supplementary material. The building material is generally used for exterior wall protection plates, decorative plates, fire-proof plates, heat insulation plates and the like of commercial or civil buildings. The existing fiber reinforced building board is generally produced on a large scale by a copying method or a pulp flowing method, both of which need to be stacked layer by means of a forming cylinder to obtain a wet blank with a certain thickness, and then the wet blank is subjected to subsequent special technical treatment such as pressurization, steam curing and the like. Obviously, subsequent treatments such as pressurization, steam curing and the like do not eliminate the laminated structure of the plate, so that the bonding force between multiple layers in the thickness Z direction of the plate is weaker and is much smaller than the strength in two directions of the plane X, Y of the plate, which can cause the strength performance of the product to have anisotropy. The aspect ratio of the products in the market at present is between 0.6 and 0.8. Obviously, the reason of the anisotropy is that the construction method needs to consider the arrangement direction of the plate and the framework, which brings great trouble to the use of the plate, and in addition, when the plate is influenced by the environment, failure and damage forms such as splitting, peeling and the like can be easily generated between layers.
Disclosure of Invention
Aiming at the problems of poor interlayer bonding force and product anisotropy of fiber reinforced building board products, the method and the device for improving the interlayer bonding force of the fiber reinforced building board are provided, the method and the device are easy to realize on the production line of the conventional copying method or pulp flow method, the bonding force in the thickness direction of the product can be greatly improved, the product performance isotropy is realized, the aspect ratio is close to 1, the convenience is brought to the board construction, the failure and damage of the product such as splitting, peeling and the like are greatly reduced, and the service life of the product is prolonged. The purpose of the invention is realized as follows: a method for improving the interlayer bonding force of a fiber reinforced building board is shown in the general schematic diagram of the invention in figure 1, and specifically comprises the following steps:
a. and adding slurry layer by layer on the forming cylinder through rotation, forming a wet blank stacked layer by layer on the forming cylinder, cutting the wet blank after the wet blank reaches the required thickness, peeling the wet blank from the forming cylinder, and drawing the wet blank onto a plane workbench to unfold and flatten the wet blank.
b. The grid needles are pricked into the wet blank.
c. And (3) sequentially carrying out pressurization, steam curing and other treatments on the wet blank inserted with the grid needles to finally obtain the fiber reinforced building board with improved interlayer bonding force.
Furthermore, the forming cylinder can be a forming cylinder of a sheet-making method production line or a forming cylinder of a pulp-flowing method production line, and the size of the forming cylinder is not limited.
Furthermore, the wet blank can be any component wet blank formed by stacking slurry layer by layer through a forming cylinder, and the components of the wet blank are not limited.
Furthermore, the method for improving the interlayer bonding force of the fiber reinforced building board can be used for improving the interlayer bonding force of the fiber reinforced building board, and the grid needle can be but is not limited to various engineering plastics and metals, such as engineering plastics ABS, PP, PE and the like, such as metal No. 45 steel and the like.
Furthermore, the shape and size of the grid needle and the shape and size of the grid determine the size of the bonding force between the fiber reinforced building board layers, the shape and size of the grid and the needle can be comprehensively designed according to the size of the bonding force lifting requirement between the fiber reinforced building board layers, the effect of lifting the bonding force between the fiber reinforced building board layers is more obvious due to the needle with a threaded structure, and the length size of the needle is smaller than or equal to the thickness size of a wet blank. The structure of the grid needle is schematically shown in fig. 2.
Furthermore, the mesh needles form a mesh belt of the mesh, the mesh belt is small enough to bury the mesh completely by means of plastic deformation of a wet blank in a subsequent pressurizing process, the upper surface of the mesh is marked as the outer surface of a product, and the outer surface is arranged on the outermost layer of the wall surface when the product is installed and used.
Furthermore, the method for improving the interlayer bonding force of the fiber reinforced building board comprises the steps that the grid needles can be integrated, the length and width dimensions of the grid needles are consistent with those of the wet blank, the grid needles can also be separated, and the length and width dimensions after being assembled are consistent with those of the wet blank.
Furthermore, the grid needles can be manually inserted by workers according to the actual conditions of the production line, and can also be mechanically inserted by arranging a suspended flat plate pressing mechanism.
Has the advantages that:
by adopting the scheme, the grid rivets with certain density distribution are formed among the layers of the fiber reinforced building board in the thickness direction, so that the interlayer bonding force can be better improved, the mechanical properties of the fiber reinforced building board product are close to each other, and the aim of the invention is achieved.
The advantages are that:
1. the method is easy to combine with the conventional production line of a sheet-making method or a pulp-flowing method at present, so that the automatic and large-scale production is realized, and the performance stability of the product is ensured.
2. The method has lower installation and modification cost on the conventional production line of a sheet-making method or a pulp-flowing method.
3. The method has no limitation on the types and specifications of products such as fiber reinforced building board materials, thickness and the like, and has better production flexibility and flexibility.
4. The performance of the obtained fiber reinforced building board with the improved interlayer binding force is greatly improved, and the upgrading and updating of the product supply side are facilitated.
Drawings
FIG. 1 is a general schematic of the invention, showing 1 a felt, 2 a table, 3 a wet blank, 4 a mesh needle, 5 a forming cylinder.
Fig. 2 is a schematic structural view of the grid needle 4 of the present invention.
Detailed Description
Examples
A method for improving the interlayer bonding force of a fiber-reinforced building board specifically comprises the following steps:
a. and adding slurry layer by layer on the forming cylinder through rotation, forming a wet blank stacked layer by layer on the forming cylinder, cutting the wet blank after the wet blank reaches the required thickness, peeling the wet blank from the forming cylinder, and drawing the wet blank onto a plane workbench to unfold and flatten the wet blank.
b. The grid needles are pricked into the wet blank.
c. And (3) sequentially carrying out pressurization, steam curing and other treatments on the wet blank inserted with the grid needles to finally obtain the fiber reinforced building board with improved interlayer bonding force.
Furthermore, the forming cylinder, in this case, the forming cylinder of the pulp flow process production line, has a diameter size of 1000 mm.
Further, the wet blank, in the example, the basic component of the wet blank is a wood pulp fiber reinforced cement-based composite material.
Furthermore, a method for improving the interlayer bonding force of the fiber reinforced building board, wherein the grid needle is made of engineering plastic ABS in this example.
Further, the method for improving the interlayer bonding force of the fiber reinforced building board comprises the steps that in the grid needle, in the example, the grid is a square with the side length of 10mm, the array interval of the needle is 10mm, and the needle is in a conical shape with the bottom circle of 3mm and the height of 9mm and is not provided with threads.
Furthermore, the mesh needles form a mesh belt of the mesh, the mesh belt is small enough to bury the mesh completely by means of plastic deformation of a wet blank in the subsequent pressurizing process, the upper surface of the mesh is marked as the outer surface of a product, and the outer surface is placed on the outermost layer of the wall surface when the product is installed and used, the mesh belt is made of plastic wires with the diameter of 3mm, the material and the mesh needles are made of engineering plastic ABS, and the mesh belt and the mesh needles are integrally formed by injection molding. During the subsequent pressing process, the plastic deformation of the wet blank buries the grid completely.
Further, the method for improving the interlayer bonding force of the fiber reinforced building board comprises the steps that the grid needles are split in the example, the length is 610mm, the width is 305mm, the length and the width of 4 assembled grid needles are consistent with those of a wet blank, the length is 2440mm, and the width is 1220 mm.
Further, according to the method for improving the interlayer bonding force of the fiber reinforced building board, the grid needles are manually inserted by workers in the embodiment according to the actual conditions of the production line.
In this example, the product obtained was tested to have a density of 1.33g/cm3The water content was 9.1%, the water absorption was 20%, the average flexural strength in both the longitudinal and transverse directions was 20MPa, and the aspect ratio was 0.97. Compared with the conventional products, the three indexes of density, water content and water absorption are all reduced by 5 percent, and the two mechanical indexes of flexural strength and aspect ratio are greatly improved by about 43 percent compared with the conventional products.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps:
a. the forming cylinder is rotated to increase slurry layer by layer, a wet blank which is piled layer by layer is formed on the forming cylinder, the wet blank is cut after reaching the required thickness, stripped from the forming cylinder and pulled to a plane workbench to be unfolded and flattened;
b. pricking the grid needle into the wet blank;
c. and (3) sequentially carrying out pressurization, steam curing and other treatments on the wet blank inserted with the grid needles to finally obtain the fiber reinforced building board with improved interlayer bonding force.
2. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the forming cylinder can be a forming cylinder of a sheet-making method production line or a forming cylinder of a pulp-flowing method production line, and the size of the forming cylinder is not limited.
3. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the wet blank can be any composition wet blank formed by stacking slurry layer by layer through a forming cylinder, and the composition of the wet blank is not limited.
4. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the grid needle can be but not limited to various engineering plastics and metals, such as engineering plastics ABS, PP, PE and the like, such as metal No. 45 steel and the like.
5. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the shape and size of the grid needle, the shape and size of the grid determine the size of the bonding force between the fiber reinforced building board layers, the shape and size of the grid and the needle can be comprehensively designed according to the size of the bonding force lifting requirement between the fiber reinforced building board layers, the needle with a threaded structure has a more obvious effect of lifting the bonding force between the fiber reinforced building board layers, and the length dimension of the needle is smaller than or equal to the thickness dimension of a wet blank.
6. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the mesh needles, which form the mesh belt of the mesh, are small enough to bury the mesh completely by means of plastic deformation of the wet blank in the subsequent pressurizing process, and the upper surface of the mesh is marked as the outer surface of the product, and the outer surface is arranged on the outermost layer of the wall surface when the product is installed and used.
7. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the grid needles can be integrated, the length and width dimensions of the grid needles are consistent with those of the wet blank, the grid needles can also be separated, and the length and width dimensions after being assembled are consistent with those of the wet blank.
8. A method for improving the interlayer bonding force of a fiber-reinforced building board is characterized by comprising the following steps: the grid needle can be manually inserted by workers according to the actual conditions of a production line, and can also be mechanically inserted by arranging a suspended flat plate pressing mechanism.
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| CN202010180969.7A CN111300598A (en) | 2020-03-16 | 2020-03-16 | Method for improving interlayer bonding force of fiber-reinforced building board |
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| CN202010180969.7A CN111300598A (en) | 2020-03-16 | 2020-03-16 | Method for improving interlayer bonding force of fiber-reinforced building board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195536A (en) * | 2021-12-06 | 2022-03-18 | 胡海峰 | Method for enhancing performance between composite layers |
| CN114770704A (en) * | 2022-04-27 | 2022-07-22 | 中国矿业大学 | Process for improving interlayer binding force of building board |
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| JPH115207A (en) * | 1997-06-17 | 1999-01-12 | Ozawa Concrete Kogyo Kk | Manufacture of fiber reinforced concrete plate |
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| CN102261134A (en) * | 2011-05-16 | 2011-11-30 | 刘铁 | Rock wool composite fireproof insulation board and preparation method thereof |
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2020
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| JPH115207A (en) * | 1997-06-17 | 1999-01-12 | Ozawa Concrete Kogyo Kk | Manufacture of fiber reinforced concrete plate |
| CN2667040Y (en) * | 2003-12-19 | 2004-12-29 | 王桂菊 | Polystyrene single-side reinforced otter board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195536A (en) * | 2021-12-06 | 2022-03-18 | 胡海峰 | Method for enhancing performance between composite layers |
| CN114770704A (en) * | 2022-04-27 | 2022-07-22 | 中国矿业大学 | Process for improving interlayer binding force of building board |
| CN114770704B (en) * | 2022-04-27 | 2023-11-14 | 中国矿业大学 | Process for improving interlayer binding force of building board |
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Application publication date: 20200619 |