Novel wood-like flower box production process

Abstract

The invention discloses a novel wood-like flower box production process. The novel wood-like flower box production process comprises the steps of S1, material pretreatment; S11, alkali treatment, wherein lignin is removed, and cellulose microfibrils are exposed; s12, silane coupling: immersing the wood chips into a 3% KH-550 silane solution, adjusting the pH value to 5.5, and reacting at room temperature for 6 hours; s2, mixed material preparation: mixing 12-15 parts of modified wood chips, 40-50 parts of Portland cement, 0.5-1 part of nano calcium carbonate, 0.5 part of chopped glass fiber, 1-1.25 parts of a polycarboxylic acid water reducer and a proper amount of iron oxide pigment; s3, mold design: S31, mold building; s4, pouring and forming: S41, preparing the mixed material into slurry; s42, the slurry is poured into the cavity, and bubbles are removed through a vibration table; s5, forming and curing; S51, pre-curing; s52, carrying out steam curing; and S6, bionic surface treatment: performing surface pyrolysis on the surface of the flower box to form a rough wood grain surface with Ra of 15 microns. Through the process steps, the wood-like flower box which is high in simulation degree and durable is produced.

Description

TECHNICAL FIELD

[0001] The present application relates to a flower box production process, in particular to a new type of wood-like flower box production process. BACKGROUND

[0002] Traditional flower boxes are usually made of solid wood, cement or plastic materials. Among them, the flower box made of natural wood will rot in 3-5 years due to the cellulose / lignin contained in the wood under the action of ultraviolet light, rain and microorganisms. The service life is limited. If the flower box is made of cement and plastic, the supported flower box lacks the real wood grain and has poor appearance. Therefore, it is very marketable to develop a new type of wood-like flower box to balance the appearance and use. SUMMARY

[0003] The purpose of the present application is to provide a new type of wood-like flower box production process to solve the technical problems existing in the production process of the existing flower box.

[0004] To achieve the above purpose, the present application provides the following technical scheme:

[0005] A new type of wood-like flower box production process, comprising

[0006] S1. Material pretreatment:

[0007] S11. Alkali treatment: soak the sawdust in 5% NaOH solution, heat in water bath at 60°C for 2h, remove lignin and expose cellulose microfibrils;

[0008] S12. Silane coupling: after alkali treatment, immerse the sawdust in 3% KH-550 silane solution, adjust pH to 5.5, and react at room temperature for 6h;

[0009] S2. Mixing preparation:

[0010] Mix the following materials according to the weight ratio, wherein: modified sawdust 12-15 parts, Portland cement 40-50 parts, nano calcium carbonate 0.5-1 part, chopped glass fiber 0.5 part, polycarboxylic acid water reducer 1-1.25 part, and iron oxide pigment in appropriate amount;

[0011] S3. Mould design:

[0012] S31. Mould building: use wooden boards to design the cavity shape according to the shape of the flower box to be made;

[0013] S4. Pouring and forming:

[0014] S41. Add water to the mixture and stir to make slurry;

[0015] S42. Pouring the slurry into the mold cavity, and performing high-frequency vibration on the mold through a vibration table, vibration amplitude is 1.5 mm, vibration acceleration is 15 m / s², and vibration time is 120 s;

[0016] S5. Molding curing:

[0017] S51. Pre-curing: placing the mold in an environment with a temperature of 20-25℃ and a humidity of 90-95% for 12 h, and controlling the temperature rise gradient to be <5℃ / h;

[0018] S52. Steam curing: placing the pre-cured flower box in steam at 60℃ for 24 h to accelerate the generation of C-S-H gel;

[0019] S6. Biomimetic surface treatment: performing surface pyrolysis on the surface of the flower box to form a rough wood grain surface with Ra=15μm.

[0020] Preferably, in the step S2. mixing, the used chopped glass fiber has a specification of L / d=100.

[0021] Preferably, in the step S3. mold design, the step S32. wood grain engraving is further included, that is, a 3D engraved wood grain negative mold is used for the outer mold of the flower box mold, and a wood grain groove with a gap of 3-8 mm is engraved on the inner surface of the outer mold.

[0022] Preferably, in the step S6. biomimetic surface treatment, a 200℃ electric iron is used to etch the wood chips on the surface of the flower box to form a biomimetic texture with Ra=10-20μm, matching the roughness of real wood.

[0023] Preferably, the step S7. surface spraying treatment is further included, that is, a fluorocarbon resin + nano-SiO2 coating is sprayed on the pyrolyzed surface of the flower box, and the coating thickness is 10 nm.

[0024] Preferably, Sporosarcina pasteuri spores + urea microcapsules are added to the coating sprayed in the step S7. surface spraying treatment.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] 1. The present scheme forms a dense protective layer (porosity <10%) through the hydration of C-S-H gel, which isolates water penetration. Nano-modification: adding 1% nano-calcium carbonate to fill capillary pores, reducing the chloride ion diffusion coefficient by 60%, and improving the impermeability. Then, a fluorocarbon super-hydrophobic coating is sprayed on the surface of the flower box to block liquid infiltration, and finally, the microbial self-repairing technology is used to achieve long-term weather resistance.

[0027] 2. The surface of ordinary cement products is smooth, lacking the rough texture and annual ring texture of real wood. The present scheme carves wood grain in the mold to make the surface of the flower box after pouring have more realistic wood grain. At the same time, the present scheme also implements wood chip pyrolysis treatment on the surface of the flower box, so that the wood grain on the surface of the flower box is more realistic.

[0028] 3. In addition, the present scheme is aimed at the problem that wood chips are strongly hydrophobic and are easily layered with the cement matrix. Alkali treatment + silane coupling is used to form a chemical bridge on the surface of the wood chips, thereby improving the connection strength between the wood chips and the cement matrix. At the same time, the present scheme also adds chopped glass fibers to the cement slurry to form a three-dimensional reinforced network skeleton to improve the overall physical properties of the flower box. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described below. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0030] A new type of wood-like flower box production process, characterized in that it comprises

[0031] S1. Material pretreatment:

[0032] S11. Alkali treatment: soak the wood chips in a 5% NaOH solution, heat in a 60°C water bath for 2h, remove lignin and expose cellulose microfibrils. By the above method, the specific surface area of the wood chips is increased, and the surface morphology of the wood chips is changed to form a porous and rough structure, thereby significantly improving the mechanical embedding of the wood chips and the cement slurry.

[0033] S12. Silane coupling: after alkali treatment, immerse the wood chips in a 3% KH-550 silane solution, adjust the pH to 5.5, and react at room temperature for 6h. The bridging mechanism of silane coupling is to build a nanoscale chemical bridge layer between the wood chip end and the cement section, upgrading the cross-section bonding from physical adsorption to chemical bond, thereby further enhancing the bonding strength between the wood chips and the cement slurry.

[0034] The above two pretreatment methods ensure the bonding strength between the wood chips and the cement slurry, and prevent the wood chips from separating from the cement matrix.

[0035] S2. Mixing preparation:

[0036] The following materials are mixed according to the weight ratio, wherein: modified wood chips: 12~15 parts, Portland cement 40~50 parts, nano calcium carbonate 0.5~1 parts, chopped glass fiber 0.5 parts, polycarboxylic acid water reducer 1~1.25 parts, iron oxide pigment in appropriate amount. It should be noted that the amount of high iron oxide pigment in this step is adjusted according to the color depth of the wood material to be imitated for the production of the flower box, which has high flexibility.

[0037] S3. Mold design:

[0038] S31. Mold building: using wood board, according to the shape of the flower box to be made, design the corresponding cavity shape inside and outside the flower box.

[0039] S4. Pouring forming:

[0040] S41. Add water to the mixture and stir to make slurry.

[0041] S42. Pour the slurry into the cavity and perform high-frequency vibration on the mold through the vibration table, with vibration amplitude of 1.5mm, vibration acceleration of 15m / s², and vibration time of 120s. Through the above vibration, the bubbles in the cement slurry are vibrated out, improving the compactness of the flower box.

[0042] S5. Forming maintenance:

[0043] S51. Pre-culture: place the mold in an environment with temperature of 20~25℃ and humidity of 90~95% for 12h, control the temperature rise gradient <5℃ / h.

[0044] S52. Steam curing: place the flower box after pre-culture in steam at 60℃ for 24h to accelerate the formation of C-S—H gel.

[0045] This step realizes the balance between strength and forming time through the combination of pre-culture and steam curing.

[0046] S6. Biomimetic surface treatment: surface pyrolysis is performed on the surface of the flower box to form a rough wood grain surface with Ra=15μm.

[0047] Finally, through biomimetic surface treatment, the matching degree between the flower box and natural wood is further improved.

[0048] It should be noted that on the basis of the above embodiment, the present scheme also has the following improvement space, specifically, in the step S2. Mixing preparation, the used chopped glass fiber specification is L / d=100. The three-dimensional network formed by this specification can play a more prominent role in improving the flower box.

[0049] It should be known that, on the basis of the above embodiment, the present scheme also has the following improvement space, step S3. The mold design further includes step S32. Wood carving: the outer mold of the flower box mold adopts the form of 3D carving wood grain negative mold, and the wood grain groove with a gap of 3-8mm is carved on the inner surface of the outer mold. The present scheme pre-carves the wood grain on the surface of the outer mold cavity in the mold, so that the surface of the cast flower box is covered with fine wood grain close to the natural texture of wood, thereby further improving the real wood simulation degree.

[0050] It should be known that, on the basis of the above embodiment, the present scheme also has the following improvement space,

[0051] In step S6. Biomimetic surface treatment, the wood chips on the surface of the flower box are cauterized at 200°C to form a biomimetic texture with Ra=10-20μm, matching the roughness of real wood. It should be known that, through the above pyrolysis treatment, the biomimetic texture on the surface of the flower box can have a roughness matching the real wood.

[0052] It should be known that, on the basis of the above embodiment, the present scheme also has the following improvement space,

[0053] Further including step S7. Surface spraying treatment: spraying fluorocarbon resin + nano

[0054] SiO2 coating on the pyrolyzed surface of the flower box, and the coating thickness is 10nm. The present scheme sprays the above coating to enhance the ultraviolet degradation resistance of the wood chips in the flower box and the waterproof ability.

[0055] It should be known that, on the basis of the above embodiment, the present scheme also has the following improvement space, step S7. Surface spraying treatment adds Sporosarcina pasteurii spores + urea microcapsules to the coating sprayed.

[0056] It should be known that Sporosarcina pasteurii spores are alkaliphilic Bacillus, which can germinate and secrete urease (enzyme activity >100 mmol urea / min / g cell) in a cement-based alkaline environment (pH=9-11). Urea microcapsules: urea is wrapped by interfacial polymerization (particle size 50-200μm), and the capsule wall breaks when the crack expands, releasing urea as a bacterial metabolic substrate. When the coating produces microcracks with a width of ≤0.3mm, the microcapsules are broken by stress, releasing urea into the crack. The spores germinate when the moisture (RH>75%) and temperature (20-35°C) are suitable, and the urease catalyzes the hydrolysis of urea to generate

[0057] CO3 2- reacts with Ca2+ (concentration > 10 mM) in the cement matrix to form calcite (CaCO3) precipitate, thus self-repairing the fine cracks.

[0058] In summary, the present application realizes the production of the wood-imitated flower box through the above process steps, and the flower box maintains the durability of the original cement-based or plastic flower box under the premise of extremely high simulation.

[0059] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel production process of wood-like flower box, characterized in that: Comprising S1. Material pretreatment: S11. Alkali treatment: wood chips are soaked in 5% NaOH solution, heated in 60℃ water bath for 2h, lignin is removed and cellulose microfibrils are exposed; S12. Silane coupling: after alkali treatment, wood chips are immersed in 3% KH-550 silane solution, pH is adjusted to 5.5, and reaction is carried out at room temperature for 6h; S2. Mixing preparation: The following materials are mixed according to the weight ratio, wherein: modified wood chips: 12-15 parts, Portland cement: 40-50 parts, nano calcium carbonate: 0.5-1 part, chopped glass fiber: 0.5 part, polycarboxylic acid water reducer: 1-1.25 parts, and iron oxide pigment: appropriate amount; S3. Mould design: S31. Mould building: wood plates are used to design the inner and outer shapes of the mould cavity according to the shape of the flower box to be made; S4. Casting forming: S41. Water is added to the mixture and stirred to make slurry; S42. The slurry is poured into the mould cavity, and the mould is subjected to high-frequency vibration by a vibration table, with a vibration amplitude of 1.5mm, a vibration acceleration of 15m / s², and a vibration time of 120s; S5. Forming curing: S51. Pre-curing: the mould is placed in an environment with a temperature of 20-25℃ and a humidity of 90-95% for 12h, and the temperature rise gradient is controlled to be less than 5℃ / h; S52. Steam curing: the flower box after pre-curing is placed in steam at 60℃ for 24h to accelerate the formation of C-S—H gel; S6. Biomimetic surface treatment: surface pyrolysis is carried out on the surface of the flower box to form a rough wood grain surface with Ra=15μm.

2. The production process of a new type of wood-like flower box according to claim 1, characterized in that: In the step S2. Mixing preparation, the specification of the chopped glass fiber used is L / d=100.

3. The production process of a new type of wood-like flower box according to claim 1, characterized in that: In the step S3. Mould design, it further includes the step S32. Wood grain carving: the outer mould of the flower box mould adopts the form of 3D carved wood grain negative mould, and a wood grain groove with a gap of 3-8mm is carved on the inner surface of the outer mould.

4. The production process of a new type of wood-like flower box according to claim 1, characterized in that: In the step S6. Biomimetic surface treatment, the wood chips on the surface of the flower box are etched using a 200℃ electric iron to form a biomimetic texture with Ra=10-20μm, matching the roughness of real wood.

5. The production process of a new type of wood-like flower box according to claim 1, characterized in that: It further includes the step S7. Surface spraying treatment: fluorocarbon resin + nano SiO2 coating is sprayed on the pyrolyzed surface of the flower box, and the coating thickness is 10nm.

6. A new production process of wood-like flower box according to claim 1, characterized in that: Sporosarcina pasteurii spores + urea microcapsules are added to the coating sprayed in the step S7. Surface spraying treatment.