High-hardness wear-resistant composite acrylic solid surface material and preparation method thereof

Abstract

The invention relates to the technical field of acrylic solid plane materials, and provides a high-hardness wear-resistant composite acrylic solid plane material and a preparation method thereof.On the premise that the proportion of multiple raw materials of an acrylic plate is achieved, a unique intervention structure is adopted, a connecting structure of the acrylic plate and a polyurethane foam layer is achieved, and the composite acrylic solid plane material is high in hardness and wear resistance. The high-hardness wear-resistant composite acrylic solid plane material comprises two layers of acrylic plates and a polyurethane foam layer in the middle, the acrylic plate is prepared from 19-39 parts of methyl methacrylate, 31-61 parts of polystyrene, 6-10 parts of calcium carbonate, 4-7 parts of silicon dioxide, 1-3 parts of nano barium sulfate, 8-12 parts of barite, 4-6 parts of octadecanamine, 4-7 parts of a tertiary butyl compound, 5-9 parts of propionic acid, 1-3 parts of polyoxyethylene, 2-6 parts of quaternary ammonium salt, 1-3 parts of a phosphoric acid derivative, 2-4 parts of an amine organic matter and 2-6 parts of a sulfuric acid derivative. 3-6 parts of an initiator, 1-3 parts of an ethylene oxide derivative and 1-3 parts of an imidazole organic matter are mixed and subjected to injection molding.

Description

Technical Field

[0001] The invention relates to the technical field of acrylic solid surface materials, and in particular to a high-hardness wear-resistant composite acrylic solid surface material and a preparation method thereof. Background Art

[0002] Composite acrylic solid surface material is a new type of material, which is mainly composed of two layers of acrylic plates and a polyurethane foam layer or other high-strength material layer in the middle. This structure makes the composite acrylic solid surface material have extremely high strength and durability, but its two layers of acrylic plates are an outward-facing structure, so the two layers of acrylic plates are directly in contact with the outside. In order to improve the wear resistance of the composite acrylic solid surface material, we propose a high-hardness and wear-resistant composite acrylic solid surface material and a preparation method thereof.

[0003] After searching, the Chinese patent announcement number CN108192254A discloses a highly anti-fouling acrylic solid surface material and a preparation method thereof, which is roughly described as including a fluorine-containing acrylic resin, an acrylate cross-linking agent, a pigment, an aluminum hydroxide filler, a curing agent, methyl methacrylate, a perfluoroalkylethyl acrylate, and a polymerization initiator. The key is to utilize the hydrophobicity and oleophobicity of perfluoroacrylate and copolymerize it with acrylic to make the copolymer resin have good anti-fouling and stain-resistant properties. The Chinese patent announcement number CN110305433A discloses an impact-resistant acrylic sheet and a preparation method thereof, which is roughly described as including using polymethyl methacrylate plastic particles as a basic raw material, adding butyl acrylate, styrene, 1,4-butanediol dipropionate, propyl methacrylate, and polypropylene adipate, and then forming through an extrusion process. The high-quality impact-resistant acrylic sheet is obtained through an optimized extrusion molding process.

[0004] Although the above-mentioned existing technical solutions can realize the manufacture of acrylic sheets, the content of its manufacturing process is more focused on the preparation and composition of raw materials, and can only form a partial reference for composite acrylic solid surface materials with multiple components. Therefore, the solution integrity when it is adapted to composite acrylic solid surface materials is poor, and both practicality and feasibility need to be further improved. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-hardness, wear-resistant composite acrylic solid surface material and a preparation method thereof, which forms an overall and complete technical solution with the matching high-hardness, wear-resistant composite acrylic solid surface material. On the premise of having a variety of raw material ratios of an acrylic plate, a unique intervention structure is adopted to realize the connection structure of the acrylic plate and the polyurethane foam layer, thereby improving the bonding effect between different substances and ensuring the integrity and wear resistance of the high-hardness, wear-resistant composite acrylic solid surface material.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-hardness wear-resistant composite acrylic solid surface material, comprising two layers of acrylic plates and a middle polyurethane foam layer, wherein the acrylic plates are composed of 19-39 parts of methyl methacrylate, 31-61 parts of polystyrene, 6-10 parts of calcium carbonate, 4-7 parts of silicon dioxide, 1-3 parts of nano-barium sulfate, 8-12 parts of barite, 4-6 parts of stearic acid amine, 4-7 parts of tertiary butyl compounds, 5-9 parts of propionic acid, and polyurethane foam. The polyurethane foam layer is formed by mixing and injection molding 1-3 parts of ethylene oxide, 2-6 parts of quaternary ammonium salt, 1-3 parts of phosphoric acid derivatives, 2-4 parts of amine organic matter, 2-6 parts of sulfuric acid derivatives, 3-6 parts of initiators, 1-3 parts of ethylene oxide derivatives and 1-3 parts of imidazole organic matter; the middle polyurethane foam layer is formed by filling polyurethane foam between two layers of acrylic plates, and metal hanging nets are arranged at the ends of the two layers of acrylic plates away from each other, and the two layers of metal hanging nets are fixedly connected with a plurality of bridge pieces.

[0007] Preferably, the initiator is a mixture of azobisisobutyronitrile and diisopropyl peroxydicarbonate, and the weight ratio of azobisisobutyronitrile to diisopropyl peroxydicarbonate is 1:4.

[0008] Preferably, the plurality of bridging members all include frustum blocks, the two layers of the metal meshes are fixedly connected to a plurality of extension rods, the plurality of extension rods are fixedly connected to connecting tubes, the plurality of connecting tubes are slidably connected to sliding rods, and the small round surfaces of the plurality of frustum blocks are respectively fixedly connected to the plurality of sliding rods.

[0009] Preferably, a plurality of the connecting tubes are each provided with a side plane, and a plurality of the side planes are each provided with a through hole.

[0010] A preparation mold for a high-hardness, wear-resistant composite acrylic solid surface material comprises a single extrusion mold and a pre-molding mold, wherein the single extrusion mold comprises a mold bottom shell and a mold top shell, the mold bottom shell and the mold top shell are both provided with a mold surface at one end close to each other, the mold top shell and the mold bottom shell are detachably connected, a plurality of pouring port tubes and a plurality of riser tubes are fixedly connected to the top of the mold top shell, the plurality of pouring port tubes and the plurality of riser tubes are all connected to the bottom of the mold top shell, a plurality of oblique insertion rods are fixedly connected to the bottom end of the mold top shell, the pre-molding mold comprises a mold frame, a plurality of hemispherical shells are fixedly connected to the mold frame, a pipeline system is installed in the mold frame, the plurality of hemispherical shells are all connected to the pipeline system, and the mold frame and the mold bottom shell are detachably connected.

[0011] Furthermore, the piping system includes a plurality of fixed pipe fittings and a plurality of adjustable pipe fittings, the plurality of fixed pipe fittings are detachably connected to the plurality of adjustable pipe fittings, the plurality of fixed pipe fittings are fixedly connected in the mold frame, and the plurality of fixed pipe fittings are connected to a plurality of shunt pipes, the plurality of shunt pipes are connected to the plurality of hemispherical shells, and the plurality of adjustable pipe fittings are connected to injection pipes.

[0012] Furthermore, a synchronous pipe rack is fixedly connected to the plurality of adjusting pipe fittings, and the plurality of adjusting pipe fittings are all connected to the synchronous pipe rack, the synchronous pipe rack is detachably connected to the mold frame, and the injection pipe is connected to the synchronous pipe rack.

[0013] Furthermore, the pouring port pipe and the riser pipe are both inclined structures parallel to the oblique insertion rod.

[0014] A method for preparing a high-hardness wear-resistant composite acrylic solid surface material comprises the following steps: S1. During the manufacturing process, firstly, the raw materials of the acrylic sheet are mixed and prepared according to the raw material ratio of the acrylic sheet. While preparing the raw materials, a metal mesh is inserted into the mold bottom shell and the metal mesh is kept relatively fitted with the inner bottom surface of the mold bottom shell. The relative position of the metal mesh in the mold bottom shell is adjusted. Then, the mold top shell is installed on the mold bottom shell. During the installation process, multiple oblique insertion rods should be kept in contact with multiple connecting tubes respectively. After the mold top shell and the mold bottom shell are assembled and installed, the large circular surface of the frustum block should be kept in contact with the bottom end of the mold top shell. S2, after the mold top shell and the mold bottom shell are molded together, the raw materials prepared in step S are poured in through multiple pouring nozzles until the raw materials enter the riser tube and form a certain entry height, then the pouring of the raw materials is stopped, and the raw materials are left to stand to solidify and form. After the raw materials are solidified and formed, the mold top shell and the mold bottom shell are relatively separated, that is, the mold top shell is demoulded relative to the acrylic plate. In this process, the separation direction of the mold top shell and the mold bottom shell should be the same as the inclination direction of the oblique insertion rod to facilitate the separation of the oblique insertion rod relative to the acrylic plate. The position originally filled by the oblique insertion rod forms an oblique opening on the acrylic plate, and the oblique opening is connected to the connecting tube; S3. After the demoulding of the mold top shell is completed, a mold frame is installed for the mold bottom shell, and the multiple hemispherical shells in the mold frame are respectively aligned with the multiple oblique openings, that is, the bottom ends of the multiple hemispherical shells are just buckled on the oblique openings after contacting the top ends of the acrylic plates, and then polyurethane foam is injected into the multiple hemispherical shells through the pipeline system and the pressure is maintained, so that the polyurethane foam fills the area enclosed by the hemispherical shells and the acrylic plates; S4. The filled polyurethane foam will also enter the connecting tube through the oblique opening. Since the polyurethane foam entering the connecting tube has a certain pressure, it will push the sliding rod, and finally the sliding rod will be extended relative to the connecting tube, that is, the frustum block will protrude from the acrylic plate. When the polyurethane foam is solidified, the mold frame will be removed relative to the mold bottom shell. S5. Similarly, the injection molding of another acrylic plate is completed. Finally, the two acrylic plates are relatively fixed and limited, so that the two metal meshes are in a state of being away from each other, and the space between the two acrylic plates is filled with polyurethane foam again. After the polyurethane foam filled again is solidified, the preparation of the composite acrylic solid surface material is completed.

[0015] Compared with the prior art, the present invention provides a high-hardness wear-resistant composite acrylic solid surface material and a preparation method thereof, which has the following beneficial effects: (1) In the present invention, a new high-hardness wear-resistant composite acrylic solid surface material is formed through the design of the high-hardness wear-resistant composite acrylic solid surface material. A new material ratio is adopted and structural characteristics are integrated to improve the bonding effect between different materials, thereby ensuring the integrity and wear resistance of the high-hardness wear-resistant composite acrylic solid surface material.

[0016] (2) In the present invention, by designing a preparation mold for the high-hardness wear-resistant composite acrylic solid surface material, a matching auxiliary manufacturing mold is formed with the high-hardness wear-resistant composite acrylic solid surface material, and a complete technical solution is formed with the high-hardness wear-resistant composite acrylic solid surface material to assist in the formation of an intervening structure between the acrylic plate and the polyurethane foam layer.

[0017] (3) In the present invention, by forming a preparation method of a high-hardness wear-resistant composite acrylic solid surface material, a preparation mold of the high-hardness wear-resistant composite acrylic solid surface material is formed to form a corresponding use method, and finally the preparation of the high-hardness wear-resistant composite acrylic solid surface material is formed, which also ensures the consistency and integrity of the scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a three-dimensional structure of a partial cross-section of the high-hardness wear-resistant composite acrylic solid surface material of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 It is a schematic diagram of the three-dimensional structure of the mold top shell after the mold bottom shell is molded together; Figure 4 It is a schematic diagram of the three-dimensional structure of the metal hanging mesh of the present invention being relatively laid in the bottom shell of the mold; Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the mold frame, hemispherical shell and fixed pipe fittings of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at C in the middle; Figure 8 It is a schematic diagram of the three-dimensional structure of the pre-molding mold after being relatively molded with respect to the mold bottom shell of the present invention; Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at D in the middle; Fig.10 It is a partially cutaway three-dimensional structural schematic diagram of the connection tube, the sliding rod and the oblique insertion rod of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the cooperation between the mold top shell and the oblique insertion rod of the present invention; Fig.12 It is a bottom-up three-dimensional structural schematic diagram of the mold frame, hemispherical shell and fixed pipe fittings of the present invention; Fig.13 The present invention is a bottom-up stereoscopic structural schematic diagram of the coordination of the adjusting pipe fitting, the injection pipe and the synchronous pipe rack.

[0019] In the figure: 1. acrylic plate; 2. polyurethane foam layer; 3. metal hanging mesh; 4. extension rod; 5. frustum block; 6. connecting tube; 7. sliding rod; 8. side plane; 9. through hole; 10. mold bottom shell; 11. mold top shell; 12. pouring nozzle pipe; 13. riser pipe; 14. oblique insertion rod; 15. mold frame; 16. hemispherical shell; 17. fixed pipe fittings; 18. adjusting pipe fittings; 19. diverter pipe; 20. injection pipe; 21. synchronous pipe rack. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] For examples, see Figure 1-Figure 13A high-hardness wear-resistant composite acrylic solid surface material, comprising two layers of acrylic plates 1 and a middle polyurethane foam layer 2, wherein the acrylic plate 1 is composed of 19-39 parts of methyl methacrylate, 31-61 parts of polystyrene, 6-10 parts of calcium carbonate, 4-7 parts of silicon dioxide, 1-3 parts of nano-barium sulfate, 8-12 parts of barite, 4-6 parts of stearic acid amine, 4-7 parts of tertiary butyl compounds, 5-9 parts of propionic acid, 1-3 parts of polyoxyethylene, and 2-6 parts of quaternary ammonium salt. The polyurethane foam layer 2 is made of 1-3 parts of 1-4 parts of 1-6 ... Polyurethane foam is filled between two layers of acrylic plates 1, and metal meshes 3 are provided at the ends of the two layers of acrylic plates 1 that are away from each other. Through the design of high-hardness wear-resistant composite acrylic solid surface material, a new high-hardness wear-resistant composite acrylic solid surface material is formed, which adopts a new material ratio and integrates structural characteristics. The two layers of metal meshes 3 are fixedly connected with multiple bridging members, and the multiple bridging members include frustum blocks 5. The two layers of metal meshes 3 are fixedly connected with multiple extension rods 4, and the multiple extension rods 4 are fixedly connected with connecting tubes 6, and the multiple connecting tubes 6 are slidably connected with sliding rods 7. The small round surfaces of the multiple frustum blocks 5 are respectively fixedly connected with the multiple sliding rods 7, and the multiple connecting tubes 6 are provided with side planes 8. The multiple side planes 8 are provided with through holes 9, which facilitate the flow and entry of polyurethane foam, improve the bonding effect between different substances, and ensure the integrity and wear resistance of the high-hardness wear-resistant composite acrylic solid surface material.

[0022] A preparation mold for a high-hardness wear-resistant composite acrylic solid surface material, comprising a single extrusion mold and a pre-molding mold, wherein the single extrusion mold comprises a mold bottom shell 10 and a mold top shell 11, and the ends of the mold bottom shell 10 and the mold top shell 11 close to each other are both provided with a mold surface, and the mold top shell 11 and the mold bottom shell 10 are detachably connected, that is, a bolt assembly from the outside is inserted into holes on the mold top shell 11 and the mold bottom shell 10 to form a connection and positioning, and the top of the mold top shell 11 is fixedly connected with a plurality of pouring nozzle pipes 12 and a plurality of riser pipes 13, and the plurality of pouring nozzle pipes 13 are fixedly connected to the top of the mold top shell 11. 12 and multiple riser pipes 13 are all connected to the bottom of the mold top shell 11, and the bottom end of the mold top shell 11 is fixedly connected to multiple oblique insertion rods 14. The pre-molding mold includes a mold frame 15, and multiple hemispherical shells 16 are fixedly connected to the mold frame 15. A pipeline system is installed in the mold frame 15, and the multiple hemispherical shells 16 are all connected to the pipeline system. The mold frame 15 is detachably connected to the mold bottom shell 10. The pipeline system includes multiple fixed pipe fittings 17 and multiple adjustable pipe fittings 18. The multiple fixed pipe fittings 17 are detachably connected to the multiple adjustable pipe fittings 18, and the multiple fixed pipe fittings 17 are all fixedly connected in the mold frame 15, and multiple fixed pipes 17 are connected with multiple shunt pipes 19, and multiple shunt pipes 19 are respectively connected with multiple hemispherical shells 16, and multiple adjusting pipes 18 are connected with injection pipes 20. Through the design of the preparation mold of the high-hardness wear-resistant composite acrylic solid surface material, the high-hardness wear-resistant composite acrylic solid surface material is matched to form a matching auxiliary manufacturing mold, and the high-hardness wear-resistant composite acrylic solid surface material is matched to form an overall and complete technical solution, which assists the formation of the intervention structure between the acrylic plate 1 and the polyurethane foam layer 2. A synchronous pipe rack 21 is fixedly connected to each adjusting pipe fitting 18, and the multiple adjusting pipe fittings 18 are all connected to the synchronous pipe rack 21. The synchronous pipe rack 21 is detachably connected to the mold frame 15, and the injection pipe 20 is connected to the synchronous pipe rack 21, so that the multiple adjusting pipe fittings 18 can be separated, adjusted and combined with respect to the multiple fixed pipe fittings 17, so as to facilitate the cleaning of the polyurethane foam in the fixed pipe fittings 17 and the adjusting pipe fittings 18 that cooperate with each other. The pouring port pipe 12 and the riser pipe 13 are both inclined structures parallel to the oblique insertion rod 14, which ensures the casting quality and facilitates the demoulding operation.

[0023] A method for preparing a high-hardness, wear-resistant composite acrylic solid surface material comprises the following steps: during the production process, firstly, the raw materials of the acrylic plate 1 are mixed and prepared according to the raw material ratio of the acrylic plate 1, and the mixed preparation process is assisted by an external extruder, and while preparing the raw materials, a release agent is applied to the exposed parts of the mold bottom shell 10, the mold top shell 11, the multiple frustum blocks 5 and the multiple sliding rods 7, and then a metal mesh 3 is inserted into the mold bottom shell 10, and the metal mesh 3 is kept relatively fitted with the inner bottom surface of the mold bottom shell 10, and the relative position of the metal mesh 3 in the mold bottom shell 10 is adjusted, and then the mold top shell 11 is installed on the mold bottom shell 10, and during the installation process, a plurality of oblique insertion rods 14 should be kept in contact with a plurality of connecting tubes 6 respectively. The vertical plane on the inclined insertion rod 14 is controlled to contact and fit with the side plane 8 on the connecting tube 6, so that the inclined insertion rod 14 forms a cover and blockage for the through hole 9, so that the raw material will not enter the through hole 9 during the subsequent injection molding process. After the mold top shell 11 is molded and installed relative to the mold bottom shell 10, the large circular surface of the frustum block 5 should be kept in contact with the bottom end of the mold top shell 11. After the mold top shell 11 is molded relative to the mold bottom shell 10, the raw material prepared in the previous step is poured in through multiple pouring nozzles 12 until the raw material enters the riser tube 13 and a certain entry height is formed. The pouring of the raw material is stopped. The height of the raw material entering the riser tube 13 should be determined according to the format area of ​​the mold bottom shell 10 and the number of riser tubes 13, that is, the mold bottom shell 1 0, and the smaller the format area of ​​the mold bottom shell 10 and the smaller the number of the riser tubes 13, the higher the height requirement for the raw materials to enter the riser tubes 13, so as to ensure the filling of the raw materials in the mold bottom shell 10 and the mold top shell 11 after the shrinkage. On the contrary, the smaller the format area of ​​the mold bottom shell 10 and the more the number of the riser tubes 13, the lower the height requirement for the raw materials to enter the riser tubes 13. The raw materials are left to stand to solidify and form. After the raw materials are solidified and formed, the mold top shell 11 is relatively separated from the mold bottom shell 10, that is, the mold top shell 11 is demoulded relative to the acrylic plate 1. In this process, the separation direction of the mold top shell 11 relative to the mold bottom shell 10 should be the same as the inclination direction of the oblique insertion rod 14, so as to facilitate the separation of the oblique insertion rod 14 relative to the acrylic plate 1. The oblique insertion rod 14 is originally An oblique opening is formed on the acrylic plate 1 at the filling position, and the oblique opening is connected to the connecting tube 6. After separation, the excess material corresponding to the riser pipe 13 and the pouring port pipe 12 is removed. After the mold top shell 11 is demoulded, a mold frame 15 is installed for the mold bottom shell 10. The installation method of the mold frame 15 relative to the mold bottom shell 10 is the same as the installation method of the mold top shell 11 relative to the mold bottom shell 10, so that the multiple hemispherical shells 16 in the mold frame 15 correspond to the multiple oblique openings up and down, that is, the bottom ends of the multiple hemispherical shells 16 are just buckled on the oblique openings after contacting the top end of the acrylic plate 1. Thereafter, polyurethane foam is injected into the multiple hemispherical shells 16 through the pipeline system and pressure is maintained, so that the polyurethane foam fills the area enclosed by the hemispherical shells 16 and the acrylic plate 1.

[0024] Furthermore, the filled polyurethane foam will also enter the connecting tube 6 through the oblique opening. Since the polyurethane foam entering the connecting tube 6 has a certain pressure, it will push the sliding rod 7, and finally realize the extension of the sliding rod 7 relative to the connecting tube 6. Due to the frustum shape of the frustum block 5, and the frustum block 5 and the sliding rod 7 are pre-coated with a release agent, it is more convenient to move and demould the frustum block 5 relative to the acrylic plate 1, that is, the frustum block 5 is protruded from the acrylic plate 1. When the polyurethane foam is cured, the mold frame 15 and the mold bottom shell 10 are disassembled. Since the hemispherical shell 16 is small in size, it is not necessary to apply a release agent in the hemispherical shell 16. Similarly, in order to facilitate the demoulding of the hemispherical shell 16, a release agent can also be applied therein. The injection molding of another acrylic plate 1 is completed, and finally the two acrylic plates 1 are relatively fixedly limited, so that the two metal hanging nets 3 are in a state of being away from each other, and the space between the two acrylic plates 1 is filled with polyurethane foam again. After the polyurethane foam filled again is solidified, the preparation of the composite acrylic solid surface material is completed. Through the formation of the preparation method of the high-hardness wear-resistant composite acrylic solid surface material, the preparation mold of the matching high-hardness wear-resistant composite acrylic solid surface material is formed to form a corresponding use method, and finally the preparation of the high-hardness wear-resistant composite acrylic solid surface material is formed, which also ensures the consistency and integrity of the scheme. Since the polyurethane foam that has been solidified after entering the oblique through-port and the connecting tube 6 is formed on the basis of the adhesion between the material molecules The hooks on the structure form an intervention structure between the polyurethane foam layer 2 and the acrylic plate 1, thereby improving the structural integrity between the polyurethane foam layer 2 and the acrylic plate 1, and the part where the frustum block 5 is inserted into the polyurethane foam layer 2, due to the frustum structural characteristics of the frustum block 5, and the depth of the large circular surface of the frustum block 5 inserted into the smaller circular surface of the polyurethane foam layer 2 is greater, so the two metal hanging nets 3 also form an intervention structure relative to the polyurethane foam layer 2, and the double intervention structure is adopted to further improve the structural integrity of the hardness and wear-resistant composite acrylic solid surface material. At the same time, since the metal hanging net 3 is located on the side of the acrylic plate 1 facing outward, the metal hanging net 3 also alleviates the wear of the acrylic plate 1 in use, thereby improving the The overall wear-resistant effect of the high-hardness wear-resistant composite acrylic solid surface material is improved, and in order to further improve the integration of the metal mesh 3 and the acrylic board 1, the metal mesh 3 can be provided with opening holes to improve the relative access between the raw materials and the metal mesh 3. After the preparation of the high-hardness wear-resistant composite acrylic solid surface material, the surface of the high-hardness wear-resistant composite acrylic solid surface material is polished to improve the smoothness of the high-hardness wear-resistant composite acrylic solid surface material, reduce the friction coefficient of the surface of the high-hardness wear-resistant composite acrylic solid surface material, and improve the wear-resistant effect of the high-hardness wear-resistant composite acrylic solid surface material. In order to change the color of the acrylic board 1, inorganic pigments such as titanium dioxide, carbon black, and iron red can be added, and the addition amount is 0.00001%-10% to give different colors to the acrylic sheet 1. At the same time, the raw materials of the acrylic sheet 1 can also be added with quartz sand with a particle size of 200-800 mesh to improve the hardness, wear resistance and dimensional stability of the raw materials. The amount of quartz sand added is between 5%-40%.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-hardness, wear-resistant composite acrylic solid surface material, characterized in that: The invention comprises two layers of acrylic plates (1) and a polyurethane foam layer (2) in the middle. The acrylic plates (1) are formed by mixed injection molding of 19-39 parts of methyl methacrylate, 31-61 parts of polystyrene, 6-10 parts of calcium carbonate, 4-7 parts of silicon dioxide, 1-3 parts of nano-barium sulfate, 8-12 parts of barite, 4-6 parts of stearylamine, 4-7 parts of tertiary butyl compounds, 5-9 parts of propionic acid, 1-3 parts of polyoxyethylene, 2-6 parts of quaternary ammonium salts, 1-3 parts of phosphoric acid derivatives, 2-4 parts of amine organic matter, 2-6 parts of sulfuric acid derivatives, 3-6 parts of initiators, 1-3 parts of ethylene oxide derivatives and 1-3 parts of imidazole organic matter. The polyurethane foam layer (2) in the middle is formed by filling the polyurethane foam between the two layers of acrylic plates (1). Metal hanging nets (3) are provided at the ends of the two layers of acrylic plates (1) that are away from each other. The two layers of metal hanging nets (3) are fixedly connected with a plurality of bridge members.

2. The high-hardness, wear-resistant composite acrylic solid surface material according to claim 1, characterized in that: The initiator is a mixture of azobisisobutyronitrile and diisopropyl peroxydicarbonate, and the weight ratio of azobisisobutyronitrile to diisopropyl peroxydicarbonate is 1:

4.

3. The high-hardness, wear-resistant composite acrylic solid surface material according to claim 2, characterized in that: The plurality of bridging members each comprise a frustum block (5), the two layers of the metal hanging nets (3) each are fixedly connected to a plurality of extension rods (4), the plurality of extension rods (4) each are fixedly connected to a connection tube (6), the plurality of connection tubes (6) each are slidably connected to a sliding rod (7), and the small round surfaces of the plurality of frustum blocks (5) are respectively fixedly connected to the plurality of sliding rods (7).

4. The high-hardness, wear-resistant composite acrylic solid surface material according to claim 3, characterized in that: A plurality of the connecting cylinders (6) are each provided with a side plane (8), and a plurality of the side planes (8) are each provided with a through hole (9).

5. A mold for preparing a high-hardness wear-resistant composite acrylic solid surface material, characterized in that: The invention comprises a single extrusion mold and a pre-molding mold, wherein the single extrusion mold comprises a mold bottom shell (10) and a mold top shell (11), the mold bottom shell (10) and the mold top shell (11) are both provided with a mold surface at one end close to each other, the mold top shell (11) and the mold bottom shell (10) are detachably connected, a plurality of pouring nozzle pipes (12) and a plurality of riser pipes (13) are fixedly connected to the top of the mold top shell (11), the plurality of pouring nozzle pipes (12) and the plurality of riser pipes (13) are all connected to the bottom of the mold top shell (11), a plurality of oblique insertion rods (14) are fixedly connected to the bottom of the mold top shell (11), and the pre-molding mold comprises a mold frame (15), a plurality of hemispherical shells (16) are fixedly connected to the mold frame (15), a pipeline system is installed in the mold frame (15), the plurality of hemispherical shells (16) are all connected to the pipeline system, and the mold frame (15) and the mold bottom shell (10) are detachably connected.

6. The mold for preparing a high-hardness wear-resistant composite acrylic solid surface material according to claim 5, characterized in that: The pipeline system comprises a plurality of fixed pipe fittings (17) and a plurality of adjustable pipe fittings (18); the plurality of fixed pipe fittings (17) are detachably connected to the plurality of adjustable pipe fittings (18); the plurality of fixed pipe fittings (17) are fixedly connected to the mold frame (15); the plurality of fixed pipe fittings (17) are connected to a plurality of shunt pipes (19); the plurality of shunt pipes (19) are connected to the plurality of hemispherical shells (16) respectively; and the plurality of adjustable pipe fittings (18) are connected to an injection pipe (20).

7. The mold for preparing a high-hardness wear-resistant composite acrylic solid surface material according to claim 6, characterized in that: A synchronous pipe rack (21) is fixedly connected to the plurality of adjusting pipe fittings (18), and the plurality of adjusting pipe fittings (18) are all in communication with the synchronous pipe rack (21). The synchronous pipe rack (21) is detachably connected to the mold frame (15), and the injection pipe (20) is in communication with the synchronous pipe rack (21).

8. The mold for preparing a high-hardness wear-resistant composite acrylic solid surface material according to claim 7, characterized in that: The pouring port pipe (12) and the riser pipe (13) are both inclined structures parallel to the oblique insertion rod (14).

9. A method for preparing a high-hardness wear-resistant composite acrylic solid surface material, characterized in that: A preparation mold for a high-hardness, wear-resistant composite acrylic solid surface material according to any one of claims 5 to 8 is used, comprising the following steps: S1, in the manufacturing process, firstly, the raw materials of the acrylic plate (1) are mixed and prepared according to the raw material ratio of the acrylic plate (1), and at the same time, a metal hanging mesh (3) is built into the mold bottom shell (10), and then a mold top shell (11) is installed on the mold bottom shell (10); S2, pouring the raw materials prepared in step S1 through a plurality of pouring nozzles (12), and leaving the raw materials to stand to solidify and form, and after the raw materials are solidified and formed, achieving relative separation of the mold top shell (11) and the mold bottom shell (10); S3, installing a mold frame (15) on the mold bottom shell (10), and making the multiple hemispherical shells (16) in the mold frame (15) correspond to the multiple oblique openings respectively, and injecting polyurethane foam into the multiple hemispherical shells (16) through the pipeline system and maintaining the pressure; S4, the filled polyurethane foam also enters the connecting tube (6) through the oblique opening, and finally the sliding rod (7) is extended relative to the connecting tube (6). When the polyurethane foam is solidified, the mold frame (15) is removed relative to the mold bottom shell (10); S5, completing the injection molding of another acrylic plate (1), and finally forming a relatively fixed limit for the two acrylic plates (1) after the two acrylic plates (1) are manufactured, and the space between the two acrylic plates (1) is filled with polyurethane foam again. After the polyurethane foam filled again is solidified, the preparation of the composite acrylic solid surface material is completed.

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