Manufacturing process of rosewood-imitating flower box compounded by using inorganic adhesive material

Abstract

The invention discloses a manufacturing process of an imitated rosewood flower box compounded by using an inorganic adhesive material, which comprises the following process steps: S1, raw material pretreatment, S2, mixture preparation, S3, mold design and molding, S4, maintenance and demolding, S5, surface refining treatment and the like, and realizes the presentation of an imitated rosewood effect by using a non-solid wood material. The problems that solid wood materials are short in service life and plastic materials are poor in effect in existing flower box manufacturing are solved.

Description

Technical Field

[0001] The present invention relates to the field of flower box manufacturing, and in particular to a manufacturing process of imitation mahogany flower boxes using inorganic glue materials for compounding. Background Art

[0002] In the selection of manufacturing materials for existing outdoor flower boxes, there are usually two options. One is natural wood, and the other is plastic wood. However, both of the above materials have their advantages and disadvantages. Among them, the advantage of natural wood is its beautiful wood grain and high ornamental value. However, the disadvantages of natural wood are also obvious, that is, it is easily affected by sun, rain, insect damage, cracking, etc. when used outdoors, has a short lifespan, and a high maintenance cost. The advantage of plastic is its strong corrosion resistance, but the disadvantage is also obvious, that is, its texture is plasticized and lacks the beauty of natural wood grain.

[0003] Therefore, it is very promising to develop a flower box manufacturing material that combines the beauty of natural wood and the weather resistance of plastic. Summary of the Invention

[0004] The purpose of the present invention is to provide a manufacturing process of imitation mahogany flower boxes using inorganic glue materials for compounding, so as to solve the problems of easy damage of natural wood and insufficient beauty of plastic in the existing flower box manufacturing process.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A manufacturing process of imitation mahogany flower boxes using inorganic glue materials for compounding, including S1. Pretreatment of raw materials: S11. Treatment of mahogany sawdust: Select waste mahogany and crush it into particles with a particle size between 0.5 and 3 mm, and the moisture content ≤ 5% after drying; S12. Preparation of gelling material: Mix according to a mass ratio of 60 - 70 parts of sulfoaluminate cement and 20 - 25 parts of fly ash to be used as the gelling material; S2. Preparation of mixture: S21. Configuration of mixture: Mix according to a mass ratio of 1 part of mahogany sawdust, 2.5 parts of gelling material, 0.2 - 0.8 parts of iron oxide pigment, 0.1 - 0.3 parts of water reducing agent, and a water - binder ratio of 0.3 - 0.4; S22. Mixing of mixture: including S221. First, dry - mix the gelling material and fly ash for 3 minutes; S222. Add mahogany sawdust and iron oxide pigment and continue to dry - mix for 5 minutes; S223. Add water and water - reducing agent in portions, stir until the fluidity of the slurry reaches 150 - 200 mm, add 0.5 - 1.5 parts of polypropylene fiber, and stir at low speed to avoid fiber agglomeration; S3. Mold design and molding: S31. Imitation mahogany texture mold: A silicone mold is embedded with a real mahogany texture template. The texture data is obtained by 3D scanning the cross-section of mahogany and laser engraved on the surface of the mold to ensure a texture depth of 0.5 - 1.5 mm; S32. Layered injection molding method: S321. Inject a mixture containing high-concentration iron oxide pigment in the first layer, with a thickness of 2 - 3 mm, to simulate the color of the mahogany core material; S322. Inject the base mixture in the second layer, with a thickness of 10 - 15 mm, and perform vibration compaction treatment; S323. Spray an interfacial agent in the third layer to enhance the interlayer bonding; S4. Curing and demolding: S41. Curing: Let the slurry stand for a period of time to achieve solidification and hardening of the material; S42. Demolding: Fill the rubber mold with gas to initiate demolding and avoid damaging the texture; S5. Surface refinement treatment: Sand and engrave the surface of the flower box after demolding to further improve the corrosion resistance of the flower box.

[0006] Preferably, in the step S11, surface activation treatment is also performed on the surface of the mahogany sawdust. The method for surface activation treatment of the mahogany sawdust is: soak it in 5% silane coupling agent for 30 minutes.

[0007] Preferably, in the step S12, 5 - 10 parts by mass of nano-silica is also added.

[0008] Preferably, the interfacial agent sprayed in the step S323 is epoxy resin diluent.

[0009] Preferably, the method in the step S41 curing includes: a. Steam curing: The temperature is 60 ± 5°C, the humidity is ≥ 95%, and the curing time is 12 hours to accelerate the hydration reaction of the cementitious material; b. Natural curing: Let it stand at room temperature of 25 ± 3°C for 7 days, and spray water every day to keep the humidity ≥ 80%.

[0010] Preferably, the step S5 surface refinement treatment includes: S51. Coarse sanding: Use 80-mesh sandpaper to remove burrs; S52. Fine engraving: Use a numerical control engraving machine to deepen the details along the texture direction, with a depth of 0.2 - 0.5 mm; S53. Dyeing treatment: Spray a special water-based mahogany dye with pH = 6 - 7, which penetrates to a depth of 1 - 2 mm on the surface layer; S54. Sealing coating: Apply 2 coats of nano-silica modified polyurethane coating to improve anti-ultraviolet and wear resistance.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: The imitation mahogany flower box made by the above method has the following advantages: 1. High simulation degree: the texture clarity reaches more than 90%, and the color difference ΔE ≤ 1.5 (CIE Lab standard); 2. Strong weather resistance: the compressive strength ≥ 30 MPa, and it can withstand 50 freeze-thaw cycles (-20°C to 50°C) without cracking; 3. Low cost: the material cost is only 20%-30% of that of natural mahogany; 4. Environmental protection benefits: each ton of product can consume 300 kg of waste mahogany sawdust and 200 kg of fly ash. Specific embodiments

[0012] The technical solutions of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0013] A manufacturing process for an imitation mahogany flower box using an inorganic glue material composite, including S1. Raw material pretreatment: S11. Mahogany sawdust treatment: Select waste mahogany and crush it into particles with a particle size between 0.5 and 3 mm. After drying, the moisture content ≤ 5%; S12. Cementitious material production: Mix 60-70 parts of sulfate aluminous cement and 20-25 parts of fly ash according to the mass ratio as the gel material; S2. Mixture preparation: S21. Mixture configuration: Mix 1 part of mahogany sawdust, 2.5 parts of cementitious material, 0.2-0.8 parts of iron oxide pigment, 0.1-0.3 parts of water reducer, and a water-cement ratio of 0.3-0.4 according to the mass ratio; S22. Mixture mixing: including S221. First, dry-mix the cementitious material and fly ash for 3 minutes; S222. Add mahogany sawdust and iron oxide pigment and continue dry-mixing for 5 minutes; S223. Add water and water reducer in portions, stir until the fluidity of the slurry reaches 150-200 mm, add 0.5-1.5 parts of polypropylene fiber, and stir at low speed to avoid fiber agglomeration; S3. Mold design and molding: S31. Imitation mahogany texture mold: Use a silicone mold embedded with a real mahogany texture template, obtain texture data by 3D scanning the cross-section of mahogany, and laser engrave it on the surface of the mold to ensure a texture depth of 0.5-1.5 mm; S32. Layered injection molding method: S321 Inject a mixture containing high-concentration iron oxide pigment into the first layer, with a thickness of 2 - 3 mm, to simulate the color of the core wood of mahogany; S322. Inject the basic mixture into the second layer, with a thickness of 10 - 15 mm, and perform vibration compaction treatment; S323. Spray an interfacial agent on the third layer to enhance the interlayer bonding; S4. Curing and demolding: S41. Curing: Let the slurry stand for a period of time to achieve solidification and hardening of the material; S42. Demolding: Fill the rubber mold with gas to initiate demolding and avoid damaging the texture; S5. Surface refinement treatment: Sand and carve the surface of the flower box after demolding to further improve the corrosion resistance of the flower box.

[0014] In the above method, through the layered injection molding process during pouring, the gradient control of color and density is achieved to simulate the natural transition between the core wood and sapwood of mahogany, achieving the effect of improving the simulation degree of the imitation mahogany flower box. In addition, in the above solution, industrial wastes (fly ash, mahogany sawdust) account for more than 60%, which can greatly reduce resource consumption and production costs. It should be noted that the main body of the inorganic adhesive material selected in this solution is sulfoaluminate cement. The alkaline environment (pH≈12) of this sulfoaluminate cement and the silane coupling agent act synergistically to effectively inhibit the biodegradation of mahogany sawdust and avoid the situation of premature degradation of mahogany sawdust during outdoor use, effectively ensuring the service life of the imitation mahogany flower box.

[0015] It should be noted that as a further improvement of the above method, in step S11, the surface of the mahogany sawdust can also be subjected to activation treatment. Specifically, the method for activating the surface of the mahogany sawdust is: soak it in 5% silane coupling agent for 30 minutes. It should be noted that through the above treatment, the interfacial bonding force between the mahogany sawdust and the cementitious material can be effectively enhanced, that is, the integrity between the mahogany sawdust and the gel material can be effectively improved, and the mahogany sawdust can be prevented from detaching from the gel material.

[0016] It should be noted that as a further improvement of the above method, in step S12, 5 - 10 parts by mass of nano-silica are also added. In this solution, by adding nano-silica to the gel material, the density and early strength of the gel material are improved. It achieves the improvement of the strength of the flower box and the protection of the mahogany sawdust wrapped by the gel in the later stage.

[0017] It should be noted that as a further improvement of the above method, the interfacial agent sprayed in step S323 is an epoxy resin diluent. It should be known that by spraying the epoxy resin diluent on the interlayer section, the bonding strength between different layer materials during layered pouring can be effectively improved, and the situation where materials of different layers are separated from each other can be avoided.

[0018] It should be noted that, as a further improvement of the above method, the method in step S41 curing includes: a. Steam curing: temperature 60±5℃, humidity ≥95%, curing for 12 hours to accelerate the hydration reaction of cementitious materials; b. Natural maintenance: Leave at room temperature of 25±3℃ for 7 days, spray water daily to maintain humidity ≥80%.

[0019] It is important to know that this solution provides two maintenance methods, of which the first can be used for rapid prototyping to adapt to tight production schedules. The second is suitable for situations where the environment is suitable and the schedule is ample. The above two maintenance methods can be flexibly combined to meet the needs of any production situation.

[0020] It should be noted that this solution provides two maintenance methods, step S5 surface refinement treatment, including: S51. Rough grinding: Use 80-grit sandpaper to remove burrs; S52. Fine engraving: Use CNC engraving machine to deepen the details along the texture, with a depth of 0.2-0.5mm; S53. Dyeing treatment: Spray redwood special water-based dye pH = 6-7, penetrate 1-2mm into the surface; S54. Protective coating: Apply 2 coats of nano-silica modified polyurethane coating to improve UV resistance and wear resistance.

[0021] This solution uses the above-mentioned process and mold design based on 3D scanning and laser engraving to achieve millimeter-level restoration of mahogany texture, thereby presenting a more realistic imitation mahogany flower box.

[0022] 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 process for making an imitation mahogany flower box using inorganic adhesive materials, characterized in that: include S1. Raw material pretreatment: S11. Redwood chip processing: select discarded redwood and crush it into particles with a particle size between 0.5 and 3 mm, and the moisture content after drying is ≤5%; S12. Preparation of cementitious material: Mix 60-70 parts of aluminum sulfate cement and 20-25 parts of fly ash in a mass ratio to serve as a gel material; S2. Mixture preparation: S21. Mixture configuration: Mix according to the mass ratio of 1 part of redwood chips, 2.5 parts of cementitious materials, 0.2-0.8 parts of iron oxide pigments, 0.1-0.3 parts of water reducers, and a water-cement ratio of 0.3-0.4; S22. Mixing of mixed materials: including S221. First, dry mix the cementitious material with fly ash for 3 minutes; S222. Add red wood chips and iron oxide pigment and continue dry mixing for 5 minutes; S223. Add water and water reducing agent in batches, stir until the slurry fluidity reaches 150-200mm, add 0.5-1.5 parts of polypropylene fiber, and stir at a low speed to avoid fiber agglomeration; S3.Mold design and molding: S31. Imitation rosewood texture mold: Use a silicone mold with a rosewood real texture template embedded in it, obtain texture data through 3D scanning of the rosewood cross section, and laser engrave it on the mold surface to ensure that the texture depth is 0.5-1.5mm; S32. Layered injection molding method: The first layer of S321 is injected with a mixture containing a high concentration of iron oxide pigments, with a thickness of 2-3mm, to simulate the color of redwood core material; S322. The second layer is injected with base mixture, with a thickness of 10-15mm, and vibrated and compacted; S323. Spray the third layer of interface agent to enhance interlayer bonding; S4.Curation and demoulding: S41. Curing: The slurry is left to stand for a period of time to allow the material to solidify and harden; S42. Demolding: Fill the rubber mold with gas to start demolding and avoid damaging the texture; S5. Surface refinement: The flower box is polished and carved after demolding to further improve its corrosion resistance.

2. The process for making a mahogany-like flower box using inorganic adhesive materials as claimed in claim 1, characterized in that: In the step S11, the surface of the red wood chips is further subjected to a surface activation treatment, wherein the surface activation treatment method of the red wood chips is: soaking in a 5% silane coupling agent for 30 minutes.

3. The process for making a mahogany-like flower box using inorganic adhesive materials as claimed in claim 1, characterized in that: In the step S12, 5 to 10 parts by mass of nano silicon dioxide are also added.

4. The process for making a mahogany-like flower box using inorganic adhesive materials as claimed in claim 1, characterized in that: The interface agent sprayed in step S323 is epoxy resin dilution liquid.

5. The process for making a mahogany-like flower box composited with inorganic adhesive material as claimed in claim 1, characterized in that: The method in step S41 curing includes: a. Steam curing: temperature 60±5℃, humidity ≥95%, curing for 12 hours to accelerate the hydration reaction of the cementitious material; b. Natural maintenance: Leave at room temperature of 25±3℃ for 7 days, spray water daily to maintain humidity ≥80%.

6. The process for making a mahogany-like flower box composited with inorganic adhesive material as claimed in claim 1, characterized in that: The step S5 of surface refinement treatment comprises: S51. Rough grinding: Use 80-grit sandpaper to remove burrs; S52. Fine engraving: Use CNC engraving machine to deepen the details along the texture, with a depth of 0.2-0.5mm; S53. Dyeing treatment: Spray redwood special water-based dye pH = 6-7, penetrate to 1-2mm of the surface; S54. Protective coating: Apply 2 coats of nano-silica modified polyurethane coating to improve UV resistance and wear resistance.