Preparation process of high-strength composite board

Abstract

The invention discloses a preparation process of a high-strength composite board, and belongs to the technical field of composite boards, raw materials of the high-strength composite board comprise a biomass material, an adhesive, a waterproof agent and a metal reinforcing rib, and the metal reinforcing rib is of a plate-shaped structure with a plurality of strip-shaped holes. The method comprises the following steps: screening, crushing and drying a biomass material to ensure uniform particle size and appropriate water content, uniformly mixing the dried biomass material with an adhesive and a waterproof agent according to a certain ratio, fully and uniformly mixing all the materials by using a high-speed stirrer, feeding the mixed materials into forming equipment, putting metal reinforcing ribs into the forming equipment, and forming by using a mold. Taking out and cooling after hot press molding to obtain the high-strength composite board. By adding the metal reinforcing ribs, the composite board has the advantages of being high in board body strength, good in mechanical performance, wide in application scene, environmentally friendly and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of composite plate production, and in particular relates to a preparation process of a high-strength composite plate. Background Art

[0002] Although traditional wood, plastic, steel and other sheet materials have good processing performance and aesthetics, they each have obvious deficiencies in strength, waterproofness, heat resistance, environmental protection, and corrosion resistance. Biomass materials are excellent substitutes for the above three materials. Biomass materials refer to materials derived from biomass, including agricultural and forestry waste, animal waste and microorganisms. Biomass materials have the advantages of being renewable, degradable and environmentally friendly. Biomass materials and metals are made into composite materials, that is, biomass metal-based composite materials, which not only have good load-bearing properties, but also retain the temperature control, humidity control, sound insulation and other properties of materials such as wood. At the same time, they have high physical and mechanical strength and surface wear resistance, and are an important supplement to traditional materials.

[0003] At present, among the various common board materials on the market, wood boards and plastic boards are more common, but these boards generally have problems such as poor mechanical properties, poor load-bearing performance, high production costs, high resource consumption and non-compliance with sustainable development strategies. In particular, wood boards have poor performance in load-bearing and impact resistance. In addition, the production and use of traditional wood boards require the felling of trees as raw materials, which consumes a lot of forest resources and does not meet the requirements of sustainable development. Summary of the invention

[0004] The purpose of the present invention is to provide a preparation process for a high-strength composite board in order to solve the problems of insufficient lightness and poor mechanical properties of common composite boards.

[0005] The present invention achieves the above-mentioned purpose through the following technical scheme: the raw materials of the high-strength composite board include biomass materials, adhesives, waterproof agents and metal reinforcement ribs, the metal reinforcement ribs are plate-like structures with a plurality of strip holes, the two sides of the metal reinforcement ribs are angled, and the bottom of the strip holes is also angled. The preparation process includes the following steps: S1: The biomass materials are screened, crushed and dried to ensure uniform particle size and appropriate moisture content; S2: Mix the dried biomass material, adhesive and waterproofing agent in a certain proportion, and use a high-speed mixer to mix all the materials thoroughly; S3: The mixed materials are sent into a molding device and metal reinforcement ribs are placed therein. After hot pressing and molding, the materials are taken out and cooled to obtain a high-strength composite plate.

[0006] Furthermore, the biomass material includes wood chips, rice husks, and straws; the adhesive includes urea-formaldehyde resin, phenol-formaldehyde resin, and melamine-formaldehyde resin; and the waterproofing agent includes acrylic emulsion, silane, and siloxane.

[0007] Furthermore, the biomass material, the adhesive and the waterproofing agent are components of the composite board substrate, and the mass ratio of the composite board substrate to the metal reinforcement is selected from one of 30:70 and 70:30.

[0008] Preferably, when the mass ratio of the composite plate substrate to the metal reinforcement is 30:70, the mechanical strength of the finished product is better.

[0009] Furthermore, the amount of the adhesive added is 5-20% of the total weight of the material, and the amount of the waterproofing agent added is 1-3% of the total weight of the material.

[0010] Furthermore, the mass proportions of each raw material in the composition of the composite board substrate are: 20-60 parts of biomass material, 5-20 parts of adhesive, and 1-3 parts of waterproofing agent.

[0011] Furthermore, the hot pressing temperature is 120~200°C and the pressure is 5~20MPa.

[0012] Furthermore, the surface of the high-strength composite board is further treated, and the treatment method is at least one of coating with waterproof coating, paint, veneer, and plastic film.

[0013] Beneficial effects: The invention is reasonably designed and has the following beneficial effects: 1. In the scheme of the present invention, by using a variety of biomass materials as the matrix and metal reinforcing ribs as the supporting skeleton, the mechanical strength of the composite board is improved, the hardness of the board is enhanced, the load-bearing capacity and bending resistance of the board are increased, so that the performance of the composite board prepared in this scheme far exceeds that of the template, and can be used as a superior substitute for wood boards; 2. In the scheme of the present invention, the metal reinforcement skeleton significantly improves the mechanical strength and rigidity of the plate, especially the angle design on both sides and the edge of the strip hole, which further enhances the overall anti-bending effect and mechanical strength, making it excellent in load-bearing and impact resistance. At the same time, the strip hole allows the biomass material to pass through to avoid the generation of internal gaps, and the bonding area is larger and the contact points are more, making the connection extremely reliable; 3. In the scheme of the present invention, by adding an appropriate amount of waterproofing agent (such as acrylic emulsion, silane, siloxane) and performing surface treatment, the waterproof performance of the board is significantly improved to avoid decomposition in a humid environment; 4. In the scheme of the present invention, by performing various surface treatment methods, the board not only has good waterproof performance, but also has a beautiful appearance and high durability, and is suitable for a variety of application scenarios; 5. In the scheme of the present invention, biomass materials are used as basic raw materials, conforming to the core of green and low-carbon circular development and resource recycling, realizing material reuse and achieving the purpose of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A flow chart is prepared for the present invention; Figure 2 This is a schematic diagram of the metal reinforcement structure of the present invention; Figure 3 It is a cross-sectional view of the metal reinforcement rib structure of the present invention.

[0015] In the figure: 1-metal reinforcement rib, 101-strip hole. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] A preparation process of a high-strength composite board, the raw materials of the high-strength composite board include biomass materials, adhesives, waterproofing agents and metal reinforcement ribs, the metal reinforcement ribs 1 are plate-like structures with a plurality of strip holes 101, the two sides of the metal reinforcement ribs 1 are angled, and the bottom of the strip holes 101 is also angled. The preparation process includes the following steps: S1: The biomass materials are screened, crushed and dried to ensure uniform particle size and appropriate moisture content; S2: Mix the dried biomass material, adhesive and waterproofing agent in a certain proportion, and use a high-speed mixer to mix all the materials thoroughly; S3: The mixed materials are sent into a molding device and metal reinforcement ribs are placed therein. After hot pressing and molding, the materials are taken out and cooled to obtain a high-strength composite plate.

[0018] Biomass materials include wood chips, rice husks, and straw; adhesives include urea-formaldehyde resin, phenol-formaldehyde resin, and melamine-formaldehyde resin; and waterproofing agents include acrylic emulsion, silane, and siloxane.

[0019] The biomass material, adhesive and waterproofing agent are components of the composite board base material, and the mass ratio of the composite board base material to the metal reinforcement is selected to be either 30:70 or 70:30.

[0020] The amount of adhesive added is 5~20% of the total weight of the material, and the amount of waterproofing agent added is 1~3% of the total weight of the material.

[0021] The mass proportions of each raw material in the composition of the composite board base material are: 20-60 parts of biomass material, 5-20 parts of adhesive, and 1-3 parts of waterproofing agent.

[0022] The hot pressing temperature is 120~200℃ and the pressure is 5~20 MPa.

[0023] The surface of the high-strength composite board is further treated by at least one of coating with waterproof coating, paint, veneer and plastic film.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A process for preparing a high-strength composite plate, characterized in that: The raw materials of the high-strength composite board include biomass materials, adhesives, waterproofing agents and metal reinforcement ribs. The metal reinforcement ribs are plate-like structures with a plurality of strip holes. The two sides of the metal reinforcement ribs are angled, and the bottom of the strip holes is also angled. The preparation process includes the following steps: S1: The biomass materials are screened, crushed and dried to ensure uniform particle size and appropriate moisture content; S2: Mix the dried biomass material, adhesive and waterproofing agent in a certain proportion, and use a high-speed mixer to mix all the materials thoroughly; S3: The mixed materials are sent into a molding device and metal reinforcement ribs are placed therein. After hot pressing and molding, the materials are taken out and cooled to obtain a high-strength composite plate.

2. The process for preparing a high-strength composite plate according to claim 1, characterized in that: The biomass material includes wood chips, rice husks, and straws; the adhesive includes urea-formaldehyde resin, phenol-formaldehyde resin, and melamine-formaldehyde resin; and the waterproofing agent includes acrylic emulsion, silane, and siloxane.

3. The process for preparing a high-strength composite plate according to claim 2, characterized in that: The biomass material, the adhesive and the waterproofing agent are components of the composite board substrate, and the mass ratio of the composite board substrate to the metal reinforcement is selected from one of 30:70 and 70:

30.

4. The process for preparing a high-strength composite plate according to claim 3, characterized in that: The amount of the adhesive added is 5-20% of the total weight of the material, and the amount of the waterproofing agent added is 1-3% of the total weight of the material.

5. The process for preparing a high-strength composite plate according to claim 4, characterized in that: The mass proportions of the raw materials in the composite board substrate composition are: 20-60 parts of biomass material, 5-20 parts of adhesive, and 1-3 parts of waterproofing agent.

6. The process for preparing a high-strength composite plate according to claim 5, characterized in that: The hot pressing temperature is 120~200℃ and the pressure is 5~20 MPa.

7. The process for preparing a high-strength composite plate according to claim 6, characterized in that: The surface of the high-strength composite board is further treated, and the treatment method is at least one of coating with waterproof coating, paint, veneer, and plastic film.

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