Anti-cracking calcium silicate board and preparation process thereof

Abstract

The invention discloses an anti-cracking calcium silicate board and a preparation process thereof, and particularly relates to the technical field of calcium silicate boards, the anti-cracking calcium silicate board comprises a board body and multiple layers of gridding cloth arranged in the board body, multiple reinforcing ribs penetrate through the multiple layers of gridding cloth, and the top end and the bottom end of each reinforcing rib extend to the top surface and the bottom surface of the board body respectively; the outer side wall of the plate body is sleeved with two ribs which are symmetrically distributed up and down, the edges of the two ribs are arranged to be fillets, and the outer walls of the tops and the outer walls of the bottoms of the two ribs are connected with frame plates. An integral stress system can be formed in the plate body through the gridding cloth and the reinforcing ribs, cracking caused by stress concentration is avoided, meanwhile, the ribs, the frame plates and the rib plates can share most stress when the plate body is subjected to external force, the deformation resistance and cracking resistance of the plate body can be remarkably improved, and the service life of the plate body is prolonged. And due to the arrangement of the rib fillets and the rubber pads, external force borne by the corners of the plate body can be evenly distributed, and the possibility of cracking is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of calcium silicate boards, and more specifically to a crack-resistant calcium silicate board and its preparation process. Background Art

[0002] Calcium silicate board is made of inorganic mineral fibers or cellulose fibers and other loose short fibers as reinforcing materials, and silicon-calcium materials as the main binder. It is made into a board through pulping, forming, and accelerating the curing reaction in high-temperature and high-pressure saturated steam to form a calcium silicate gel. It is a new type of building and industrial board with excellent properties. Its products have good fire resistance, moisture resistance, sound insulation, insect resistance, and durability, and are ideal decorative boards for ceilings and partitions. During the preparation of calcium silicate board, different properties can be obtained by adding different types of materials to the materials. For example, a high-strength calcium silicate board and its preparation process with the publication number of CN112573887A in the prior art uses iron-doped wood fibers instead of wood fibers on the basis of traditional calcium silicate boards, and prepares nano-iron particles by the DC arc plasma method. Since nano-iron particles have a large specific surface area and high surface energy, they are extremely easy to agglomerate and are not easily dispersed in wood fibers. Therefore, a silane coupling agent KH550 is added for modification treatment to introduce amino functional groups. After the amino ions are ionized, they can not only maintain the electrostatic repulsion between particles, but also improve the steric hindrance effect, increasing the stable and uniform loading of nano-iron particles in wood fibers, and obtaining wood fibers with magnetic properties.

[0003] However, the existing calcium silicate boards generally have right-angled edges. When the calcium silicate board is subjected to external forces, the corners are the most likely parts to generate stress concentration. The sharp corners will cause the stress to highly concentrate locally, thus triggering cracks, and seriously, it will lead to cracking of the calcium silicate board, which will further affect the use of the calcium silicate board. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a crack-resistant calcium silicate board and its preparation process. Through the grid cloth and the reinforcing ribs, an integral stress-bearing system can be formed inside the board body to avoid cracking caused by stress concentration. At the same time, the rib strips, the frame plates, and the rib plates can share most of the stress when the board body is subjected to external forces, which can significantly improve the anti-deformation and anti-cracking capabilities of the board body. Moreover, the settings of the rounded corners of the rib strips and the rubber pads can evenly distribute the external forces received by the corners of the board body, reducing the possibility of cracking, so as to solve the problems appearing in the above-mentioned background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a crack-resistant calcium silicate board, including a board body and multiple layers of mesh cloth arranged inside the board body. A plurality of reinforcing ribs penetrate between the multiple layers of mesh cloth. The top and bottom ends of each reinforcing rib respectively extend to the top surface and the bottom surface of the board body. Two symmetrically distributed ribs are sleeved on the outer side wall of the board body. The edges of the two ribs are both set as rounded corners. The top outer wall and the bottom outer wall of the two ribs are both connected with frame plates. A plurality of rib plates are fixedly arranged inside the frame plates. The plurality of rib plates are detachably connected to the plurality of reinforcing ribs. Rubber pads are fixedly arranged on the outer side walls of the two ribs and the outer side walls of the two frame plates.

[0006] In a preferred embodiment, the mesh cloth is woven by a warp knitting machine with multiple transverse knitting wires and multiple longitudinal knitting wires, and a plurality of through holes with the same number as the reinforcing ribs are formed between the transverse knitting wires and the longitudinal knitting wires. The transverse knitting wires are glass fibers, and the longitudinal knitting wires are carbon fibers. The high strength of glass fibers and carbon fibers makes the mesh cloth have high strength, and thus can improve the strength of the board body.

[0007] In a preferred embodiment, a plurality of slots are processed on the outer wall surface of each reinforcing rib. Protrusions are inserted into the slots. The tops of the plurality of protrusions are all bonded to the bottom end of the mesh cloth. A plurality of diversion holes are processed on each reinforcing rib. The plurality of diversion holes and the plurality of protrusions are spaced apart. Setting a plurality of diversion holes can enable the calcium silicate board material to flow into the reinforcing ribs, thereby improving the strength after molding.

[0008] In a preferred embodiment, a plurality of threaded holes are processed on the outer walls of the plurality of rib plates and the outer walls of the plurality of reinforcing ribs, and the number of threaded holes on the rib plates is set to be a plurality. The rib plates and the reinforcing ribs are fixed by fastening bolts. Loosen the fastening bolts, and the rib plates and the frame plates can be removed from the board body, so as to facilitate the replacement of rib plates and frame plates made of different materials for use.

[0009] In a preferred embodiment, decorative plates are arranged on the outer walls of the two frame plates on the sides away from each other. A plurality of clamping blocks are fixedly arranged on the sides of the frame plates close to the decorative plates. A plurality of clamping grooves with the same number as the clamping blocks are processed on the sides of the decorative plates close to the frame plates. The clamping blocks are clamped with the clamping grooves.

[0010] The present invention also includes the preparation process of the above crack-resistant calcium silicate board, and the specific preparation steps are as follows:

[0011] Step 1: First, use a warp knitting machine to weave and produce the mesh cloth, and use a numerical control machine tool to process threaded holes, slots, and diversion holes on the surface of each reinforcing rib;

[0012] Step 2: After dropping glue on each protrusion, neatly arrange multiple reinforcing ribs in the mold according to their positions. First, insert the protrusions on the left and right sides of the reinforcing ribs, then put a layer of mesh cloth over the multiple reinforcing ribs, and press down the mesh cloth to bond it with the glue on the protrusions. After that, repeat the above operations to install the remaining two mesh cloths on the reinforcing ribs;

[0013] Step 3: Mix the materials for preparing calcium silicate board with water to make a slurry, then inject the slurry into the mold to form a slab, and then take out the formed plate body for cutting, autoclave curing, drying, grinding, and polishing;

[0014] Step 4: Place two rubber strips on the side walls of the calcium silicate board, then install two frame plates on the top and bottom of the calcium silicate board respectively, and finally install the decorative board to obtain the calcium silicate board.

[0015] In a preferred embodiment, the mold includes a forming box. The inner wall of the bottom of the forming box is fixedly provided with a plurality of threaded rods adapted to the threaded holes. One side of the top of the forming box is fixedly provided with a spray gun for storing glue. Spraying glue through the spray gun is more time-saving and labor-saving.

[0016] In a preferred embodiment, a high-pressure pump is connected to the spray gun. The high-pressure pump is detachably installed at the rear end of the forming box, which is convenient for the staff to disassemble the high-pressure pump and the forming box.

[0017] Technical effects and advantages of the present invention:

[0018] 1. In the present invention, a whole stress system can be formed inside the plate body through the mesh cloth and the reinforcing ribs, avoiding cracking caused by stress concentration. At the same time, when the plate body is subjected to external forces, the ribs, frame plates, and rib plates can share most of the stress, which can significantly improve the anti-deformation and anti-cracking abilities of the plate body. And the setting of the rounded corners of the ribs and the rubber pads can evenly distribute the external forces received by the corners of the plate body, reducing the possibility of cracking;

[0019] 2. The mesh cloth is made of glass fiber and carbon fiber. Glass fiber has high strength, high heat resistance, and low thermal conductivity, and carbon fiber has the advantages of high strength and good fatigue resistance. Therefore, placing the mesh cloth in the plate body can make the plate body not easily appear fatigue cracks and fractures.

[0020] 3. The reinforcing ribs are fixed by multiple threaded rods in the forming box. The positions of the multiple threaded rods indicate the installation positions of the mesh cloth. The staff only needs to put the mesh cloth over the multiple reinforcing ribs, which can improve the preparation efficiency. The reinforcing ribs and the protrusions support the mesh cloth to keep it as flat as possible during the pouring and forming process, so as to avoid the wrinkles of the mesh cloth affecting the forming effect. Description of the drawings

[0021] Figure 1Schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Stereogram of the plate body of the present invention;

[0023] Figure 3 Top view of the plate body of the present invention;

[0024] Figure 4 Structure diagram of the mesh cloth and the reinforcing rib of the present invention;

[0025] Figure 5 Structure diagram of the mesh cloth of the present invention;

[0026] Figure 6 Cross-sectional view of the frame plate and the decorative plate of the present invention;

[0027] Figure 7 Schematic diagram of the rib of the present invention;

[0028] Figure 8 Structure diagram of the mold of the present invention;

[0029] Figure 9 Top view of the forming box of the present invention.

[0030] Reference numerals are: 1, plate body; 2, mesh cloth; 201, transverse weaving wire; 202, longitudinal weaving wire; 203, through hole; 3, reinforcing rib; 4, rib; 5, rounded corner; 6, frame plate; 7, rib plate; 8, rubber pad; 9, slot; 10, protrusion; 11, shunt hole; 12, threaded hole; 13, fastening bolt; 14, decorative plate; 15, clamping block; 16, clamping groove; 17, mold; 1701, forming box; 1702, threaded rod; 1703, spray gun; 1704, high-pressure pump. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to the attached drawings of the specification Figures 1-7, the present invention provides an anti-cracking calcium silicate board, which includes a board body 1 and multiple layers of mesh cloth 2 arranged inside the board body 1. A plurality of reinforcing ribs 3 penetrate between the multiple layers of mesh cloth 2. The top and bottom ends of each reinforcing rib 3 respectively extend to the top surface and the bottom surface of the board body 1. Two symmetrically distributed ribs 4 are sleeved on the outer wall of the board body 1. The edges of the two ribs 4 are both set as rounded corners 5. The top outer wall and the bottom outer wall of the two ribs 4 are both connected with frame plates 6. A plurality of rib plates 7 are fixedly arranged inside the frame plates 6. The plurality of rib plates 7 are detachably connected to the plurality of reinforcing ribs 3. Rubber pads 8 are fixedly arranged on the outer walls of the two ribs 4 and the outer walls of the two frame plates 6.

[0033] By arranging multiple layers of mesh cloth 2 inside the board body 1, a whole stress-bearing system can be formed inside the board body 1 by using the mesh cloth 2 and the reinforcing ribs 3. When a part of the board body 1 is subjected to external force, the mesh can quickly disperse the force to the surrounding area, avoiding cracking caused by stress concentration. At the same time, the mesh cloth 2 can also enhance the bonding force inside the board body 1, improve the overall structural stability, and the ribs 4, frame plates 6 and rib plates 7 arranged outside the board body 1 can share most of the stress when the board body 1 is subjected to external force, which can significantly improve the anti-deformation and anti-cracking capabilities of the board body 1. At the same time, the setting of the rounded corners 5 at the edges of the two ribs 4 can make the stress evenly distributed along the rounded corners 5 when the corners of the board body 1 are subjected to external force, reduce the stress peak value at the corners, and reduce the possibility of cracking. Moreover, rubber pads 8 are also arranged on the outer walls of the ribs 4 and the outer walls of the frame plates 6. The rubber pads 8 have elasticity and can play a buffering role when subjected to external force, thereby further reducing the possibility of cracking of the board body 1.

[0034] In this embodiment, as Figure 5 shown, the mesh cloth 2 is woven by a warp knitting machine from a plurality of transverse knitting wires 201 and a plurality of longitudinal knitting wires 202, and a plurality of through holes 203 having the same number as the reinforcing ribs 3 are formed between the transverse knitting wires 201 and the longitudinal knitting wires 202. The transverse knitting wires 201 are glass fibers, and the longitudinal knitting wires 202 are carbon fibers.

[0035] Glass fibers have high strength, high heat resistance and low thermal conductivity, and carbon fibers have the advantages of high strength and good fatigue resistance. Therefore, the mesh cloth 2 made of the two has high strength and heat resistance, and is not prone to fatigue cracks and fractures. Therefore, arranging multiple layers of mesh cloth 2 can improve the strength and crack resistance of the board body 1.

[0036] In this embodiment, a plurality of slots 9 are processed on the outer wall surface of each reinforcing rib 3. Protrusions 10 are inserted into the slots 9. The tops of the plurality of protrusions 10 are bonded to the bottom end of the mesh cloth 2. A plurality of diversion holes 11 are processed on each reinforcing rib 3. The plurality of diversion holes 11 and the plurality of protrusions 10 are arranged at intervals. By bonding the protrusions 10 to the mesh cloth 2, the firmness between the mesh cloth 2 and the protrusions 10 can be improved.

[0037] Refer to the attached instructions Figures 3-4 Figures 3-4 On the outer walls of multiple rib plates 7 and multiple reinforcing ribs 3, threaded holes 12 are machined. The number of threaded holes 12 on the rib plates 7 is set to be multiple. The rib plates 7 and the reinforcing ribs 3 are fixed by fastening bolts 13, which facilitates the installation and disassembly of the rib plates 7 and the reinforcing ribs 3, and enables the replacement of the rib plates 7, the frame plates 6, and the rib strips 4.

[0038] Moreover, on the outer walls of the two frame plates 6 away from each other, decorative plates 14 are provided. On the sides of the frame plates 6 close to the decorative plates 14, multiple clamping blocks 15 are fixedly provided. On the sides of the decorative plates 14 close to the frame plates 6, the same number of card slots 16 as that of the clamping blocks 15 are machined. The clamping blocks 15 are clamped with the card slots 16. The setting of the decorative plates 14 can play a role in decoration and beautification on the outside of the plate body 1. At the same time, the decorative plates 14 are installed by means of clamping, which facilitates the replacement of different decorative plates 14 for decoration and protection.

[0039] The preparation process of the above anti-cracking calcium silicate board is as follows:

[0040] Step 1: First, use a warp knitting machine to weave and produce the mesh cloth 2, and use a numerical control machine tool to machine threaded holes 12, slots 9, and shunt holes 11 on the surface of each reinforcing rib 3;

[0041] Step 2: After dripping glue on each protrusion 10, place multiple reinforcing ribs 3 neatly in the mold 17 according to the positions, and first insert the protrusions 10 on the left and right sides of the reinforcing ribs 3 (as shown in Figure 4 ), then put a layer of mesh cloth 2 on multiple reinforcing ribs 3, and press down the mesh cloth 2 to bond it with the glue on the protrusions 10. After that, repeat the above operations to install the remaining two mesh cloths 2 on the reinforcing ribs 3;

[0042] Step 3: Mix the materials for preparing the calcium silicate board with water to make a slurry, then inject the slurry into the mold 17 to form a slab, and then take out the formed plate body 1 for cutting, autoclaving, drying, grinding, and polishing;

[0043] Step 4: Place two rubber strips on the side walls of the calcium silicate board, then install the two frame plates 6 on the top and bottom of the calcium silicate board respectively, and finally install the decorative plates 14 to obtain the calcium silicate board.

[0044] Among them, as shown in Figures 8-9As shown in the figure, the structure of the mold 17 used is as follows: it includes a forming box 1701, and a plurality of threaded rods 1702 adapted to the threaded holes 12 are fixedly arranged on the inner wall of the bottom of the forming box 1701. One side of the top end of the forming box 1701 is fixedly provided with a spray gun 1703 for storing glue liquid. A high-pressure pump 1704 is communicated with the spray gun 1703. The high-pressure pump 1704 is detachably installed at the rear end of the forming box 1701. The spray gun 1702 is selected as SCHUTZEGF-3 made in Germany, and the high-pressure pump 1704 is selected as speck-pumpsin-vbf4-260.

[0045] Connect a plurality of reinforcing ribs 3 to the threaded rods 1702 in the forming box 1701. The positions of the plurality of threaded rods 1702 indicate the installation positions of the mesh cloth 2. The staff only needs to align the mesh cloth 2 with the reinforcing ribs 3 and insert it. In this way, the preparation efficiency can be improved. And by using the reinforcing ribs 3 and the protrusions 10 to support the mesh cloth 2, the flatness of the mesh cloth 2 during the pouring and forming process can be maintained as much as possible to prevent the mesh cloth 2 from wrinkling and affecting the forming effect. And when the staff installs the protrusions 10, they can quickly spray glue with the help of the spray gun 1703, which can further improve the preparation efficiency.

[0046] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crack-resistant calcium silicate board, characterized in that: It includes a plate body (1) and multiple layers of mesh cloth (2) arranged inside the plate body (1). A plurality of reinforcing ribs (3) penetrate between the multiple layers of mesh cloth (2). The top and bottom ends of each reinforcing rib (3) respectively extend to the top surface and bottom surface of the plate body (1); Two symmetrically distributed ribs (4) are sleeved on the outer side wall of the plate body (1). The edges of the two ribs (4) are both set as rounded corners (5). Frame plates (6) are connected to the top outer wall and bottom outer wall of the two ribs (4). A plurality of rib plates (7) are fixedly arranged inside the frame plates (6). The plurality of rib plates (7) are detachably connected to the plurality of reinforcing ribs (3). Rubber pads (8) are fixedly arranged on the outer side walls of the two ribs (4) and the outer side walls of the two frame plates (6).

2. The calcium silicate board for preventing cracking according to claim 1, wherein: The mesh cloth (2) is woven by a warp knitting machine with a plurality of transverse knitting wires (201) and a plurality of longitudinal knitting wires (202). And a plurality of through holes (203) with the same number as the reinforcing ribs (3) are formed between the transverse knitting wires (201) and the longitudinal knitting wires (202). The transverse knitting wires (201) are made of glass fiber, and the longitudinal knitting wires (202) are made of carbon fiber.

3. The calcium silicate board for preventing cracking according to claim 1, wherein: A plurality of slots (9) are processed on the outer wall surface of each reinforcing rib (3). Protrusions (10) are inserted into the slots (9). The tops of the plurality of protrusions (10) are all bonded to the bottom end of the mesh cloth (2). A plurality of diversion holes (11) are processed on each reinforcing rib (3). The plurality of diversion holes (11) and the plurality of protrusions (10) are distributed at intervals.

4. The calcium silicate board for preventing cracking according to claim 1, wherein: Threaded holes (12) are processed on the outer walls of the plurality of rib plates (7) and the outer walls of the plurality of reinforcing ribs (3). And the number of threaded holes (12) on the rib plates (7) is set to be a plurality. The rib plates (7) and the reinforcing ribs (3) are fixed by fastening bolts (13).

5. A crack-resistant calcium silicate board according to claim 1, characterized in that: Decorative plates (14) are arranged on the outer walls of the two frame plates (6) away from each other. A plurality of clamping blocks (15) are fixedly arranged on the sides of the frame plates (6) close to the decorative plates (14). A plurality of clamping grooves (16) with the same number as the clamping blocks (15) are processed on the sides of the decorative plates (14) close to the frame plates (6). The clamping blocks (15) are clamped with the clamping grooves (16).

6. The preparation process of the anti-cracking calcium silicate board according to any one of claims 1-5, characterized in that: The specific preparation steps are as follows: Step 1: First, use a warp knitting machine to weave and produce the mesh cloth (2). Use a numerical control machine tool to process threaded holes (12), slots (9), and diversion holes (11) on the surface of each reinforcing rib (3); Step 2: After dripping glue on each protrusion (10), neatly place the plurality of reinforcing ribs (3) in the mold (17) according to the positions. First insert the protrusions (10) on the left and right sides of the reinforcing ribs (3). Then put a layer of mesh cloth (2) on the plurality of reinforcing ribs (3), and press down the mesh cloth (2) to make it bond with the glue on the protrusions (10). After that, repeat the above operations to install the remaining two layers of mesh cloth (2) on the reinforcing ribs (3); Step 3: Mix the materials for preparing calcium silicate board with water to make a slurry. Then inject the slurry into the mold (17) to form a slab. Then take out the formed plate body (1) for cutting, autoclaving, drying, grinding, and polishing; Step 4: Place two rubber strips on the side wall of the calcium silicate board, then install two frame boards (6) on the top and bottom of the calcium silicate board respectively, and finally install the decorative board (14) to obtain the calcium silicate board.

7. A preparation process of an anti-cracking calcium silicate board according to claim 6, characterized in that: The mold (17) includes a forming box (1701). A plurality of threaded rods (1702) adapted to the threaded holes (12) are fixedly provided on the inner wall of the bottom of the forming box (1701). A spray gun (1703) for storing glue is fixedly provided on one side of the top end of the forming box (1701).

8. A preparation process of an anti-cracking calcium silicate board according to claim 7, characterized in that: A high-pressure pump (1704) is communicated with the spray gun (1703), and the high-pressure pump (1704) is detachably installed at the rear end of the forming box (1701).

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