CN113733281A - Carbonized wood and preparation method thereof - Google Patents
Carbonized wood and preparation method thereof Download PDFInfo
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- CN113733281A CN113733281A CN202111240978.1A CN202111240978A CN113733281A CN 113733281 A CN113733281 A CN 113733281A CN 202111240978 A CN202111240978 A CN 202111240978A CN 113733281 A CN113733281 A CN 113733281A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/025—Controlling the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/18—Compounds of alkaline earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/20—Compounds of alkali metals or ammonium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/20—Removing fungi, molds or insects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention belongs to the technical field of decorative panels, and particularly relates to carbonized wood and a preparation method thereof. The wood board with the cubic shape is prepared in the first step, the wood board is soaked in the pore-forming liquid in the second step, the wood board soaked in the pore-forming liquid in the third step is taken out and heated for pore-forming, the wood board is soaked in the insect-proof liquid after being dried in the fourth step, the wood board is taken out in the fifth step, dried and dehydrated, and the surface of the wood board is heated and carbonized in the sixth step to obtain the carbonized wood, so that the technical effect of preventing insect pests of the wood is achieved. The method has the advantages that the preparation process is simple, the preparation cost is low, fine gaps are prepared in the wood board in the second step and the third step, the insect-proof liquid in the fourth step can be conveniently injected into the wood, and meanwhile, the surface of the wood is carbonized at high temperature in the sixth step to form a compact carbonized layer to seal the insect-proof liquid, so that the insect-proof durability of the wood board is improved.
Description
Technical Field
The invention belongs to the technical field of decorative panels, and particularly relates to carbonized wood and a preparation method thereof.
Background
The decorative panel, commonly called panel, is a decorative plate with single-side decoration effect, which is made by precisely slicing a solid wood board into a micro-thin wood veneer with the thickness of about 0.2mm, using a splint as a base material and adopting an adhesive process. The carbonized wood is one of decorative panels, is wood subjected to surface carbonization or advanced treatment, and can be divided into surface carbonized wood and deep carbonized wood, however, the deep carbonized wood is generally subjected to high-temperature carbonization at about 200 ℃, nutritional ingredients are damaged, so that the deep carbonized wood has a good insect prevention effect, but is easy to corrode when contacting water and soil for a long time, so that the surface carbonized wood is commonly used for forming a fence in a park flower bed or other landscape decorations, the surface carbonized wood is roasted by an oxygen welding gun, so that the surface of the wood has a very thin carbonized layer, the change of the wood performance can be similar to the paint of the wood, but the concave-convex wood grain on the surface can be highlighted, a stereoscopic effect is generated, the surface carbonized wood is not easy to absorb water, the water content is low, and the wood is not cracked. The wood is moisture-resistant, not easy to deform and excellent in moisture resistance, but the carbonized wood on the surface is not carbonized completely, nutrient substances are not completely destroyed, and the insect-proof effect is poor, so that a carbonized wood decorative material with a good insect-proof effect and capable of being used in park decoration is urgently needed in the market.
The Chinese patent with publication number CN110181630B and publication number 2019.08.30 discloses a method for preparing a wood-plastic composite geothermal floor with a panel made of carbonized wood treated with wood wax oil, which takes hardwood as a raw material to prepare a surface plate, and the surface plate is dried; then sequentially carrying out microwave treatment, vacuum drying treatment and carbonization treatment on the surface plate; moisture regaining treatment; longitudinally decomposing the treated surface plate into a specification plate, and milling a dovetail-shaped groove on one side of the surface plate; preparing a thermoplastic wood-plastic composite material by taking a mixture of thermoplastic plastics and carbonized wood powder as a master batch; co-extruding the surface plate and the thermoplastic wood-plastic composite material to prepare a carbonized wood-plastic composite geothermal floor substrate consisting of the surface plate and the bottom plate; cutting off the substrate, and milling the end parts of the two ends of the substrate into a groove and a convex groove which are mutually clamped by using a forming milling cutter after cutting off; and (3) placing the prepared carbonized wood floor in an impregnation tank, and performing impregnation treatment by using modified wood wax oil.
Although the invention solves the problems of poor heat conductivity of wood, poor dimensional stability of the floor and pollution of indoor harmful substances; however, the invention does not further solve the problem of insect control of wood.
Disclosure of Invention
The invention aims to provide carbonized wood and a preparation method thereof. The method has the advantages that the preparation process is simple, the preparation cost is low, fine gaps are prepared in the wood board in the second step and the third step, the insect-proof liquid in the fourth step can be conveniently injected into the wood, and meanwhile, the surface of the wood is carbonized at high temperature in the sixth step to form a compact carbonized layer to seal the insect-proof liquid, so that the insect-proof durability of the wood board is improved.
The technical scheme adopted by the invention for solving the problems is as follows: a preparation method of carbonized wood comprises the following steps:
s1, preparing wood into a cubic wood board to be treated;
s2, soaking the wood board to be treated in a pore-forming solution to obtain a pretreated wood board;
s3, taking the pretreated wood board out of the pore-forming liquid and heating to form pores to obtain a porous wood board;
s4, soaking the porous wood board in insect-proof liquid to obtain an insect-proof wood board;
s5, taking the insect-proof wood board out of the insect-proof liquid, and drying and dehydrating to obtain a dehydrated wood board;
s6, heating and carbonizing the surface of the dehydrated wood board to obtain carbonized wood.
The wood raw material of the wood board mainly selects pine, the pine has natural color and luster, clear and beautiful texture, strong practicability and durability, the most important is strong elasticity and permeability, and chemicals can be added by impregnation, specifically, larch, pinus parviflora, cedar, yellow fir, oil fir and other pine which are commercially produced and sold can be selected, and preferably, American southern pine, douglas fir, yellow pine, northern Europe red pine, Korean pine, Russian pinus sylvestris, pinus ichthyris, twisted-leaf pine, Caribbean pine, black pine, hemlock, spruce, radiata pine, masson, larch and other varieties can be selected; the pore-forming solution is an additive for increasing the pore structure in the material, and mainly selects a chemical reagent which has strong permeability and can generate gas after being treated by heat treatment or other methods, so that the gas generated from the interior of the wood can make the wood porous, thereby facilitating the further addition of medicines; the insect-proof liquid mainly adopts reagents which have strong permeability, good fluidity, small corrosion degree on wood and can achieve wide insect-killing effect; the carbonization process of wood mainly adopts surface carbonization, an oxygen welding gun is generally adopted to roast the surface of the wood for a short time, so that the surface of the wood has a very thin carbonization layer, the change of the performance of the wood can be similar to that of the wood paint, but the concave-convex wood grains on the surface can be highlighted, a three-dimensional effect is generated, the sealing effect on the interior of the wood can be realized, insect-proof liquid is also sealed in an opening of the wood, the surface carbonized wood has good processing performance, the defect of surface fuzzing of a product is overcome, meanwhile, the hemicellulose of a water-absorbing functional group of the wood is recombined under the carbonization effect, and the final product has better physical performance.
The further preferred technical scheme is as follows: the pore-forming liquid in the S2 comprises the following components in parts by weight: 50-150 parts of purified water and 1-10 parts of pore-forming salt, wherein the wood board to be treated is soaked for 6-12 hours.
The effect of the purified water is best by adopting distilled water, if the use of surface water, underground water and tap water is limited by production conditions, the technical effect of the purified water is close to that of the purified water, the specific production position is determined, the pore-forming salt generally adopts inorganic salt substances, gas can be generated after heating, tiny gaps are formed by the expansion of the interior of wood, meanwhile, the soaking time is too short, so that the pore-forming effect is poor, the pore-forming time is too long, the wood board erosion degree is higher, and the mechanical strength is reduced.
The further preferred technical scheme is as follows: the pore-forming salt is any one or a mixture of ammonium bicarbonate, ammonium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate.
Wherein the pore-forming salt is preferably ammonium bicarbonate, because ammonium bicarbonate has good water solubility, the solubility in water is 14% (10 ℃), 17.4% (20 ℃) and 21.3% (30 ℃), the ammonium bicarbonate has unstable chemical property and is easy to decompose when heated, the ammonium bicarbonate starts to slowly decompose at a temperature of above 36 ℃ to generate ammonia, carbon dioxide and water, and the ammonium bicarbonate decomposes into NH when heated to about 60 DEG C3 21.5%，CO2 55.7%，H2White smoke with O22.8 percent, can be decomposed by hot water, has little residue in wood, and is an ideal pore-forming salt reagent.
The further preferred technical scheme is as follows: the heating pore-forming temperature in the S3 is 40-70 ℃, and the heating time is 1-5 h.
When ammonium bicarbonate is used as the pore-forming salt, the thermal decomposition of ammonium bicarbonate is started at 36 ℃, but the thermal decomposition efficiency is too low, so that the pore-forming process is performed at least at 40 ℃ or higher, but when the heating temperature reaches 70 ℃ or higher, the thermal decomposition of ammonium bicarbonate is too fast, and the pores formed in the wood become large and uneven, so that the thermal decomposition process should be controlled to 70 ℃ or lower.
The further preferred technical scheme is as follows: the insect-proof liquid in the S4 comprises the following components in parts by weight: 1-5 parts of tobacco leaves, 1-5 parts of calcium oxide and 60-300 parts of purified water are added and mixed for 12-24 hours.
Wherein the tobacco leaf is preferably selected from annual or limited perennial herbs, solanaceae. Plant glandular hair, stem height 0.7-2m, unobvious leaf stalk or wing-shaped stalk, top growth of coniform inflorescence, cylindrical or cylindrical bell-shaped calyx, funnel-shaped corolla and optimal pink tail end, mixing tobacco leaf and calcium oxide powder, adding appropriate amount of purified water, reacting calcium oxide with water to release heat, hot dipping tobacco leaf, collecting dipped dipping agentThe pH value of the insect-proof solution is about 13, if purified water is further added for dilution, the pH value can be about 12.5, the insect-proof solution contains nicotine, also called nicotine, and the chemical formula is C10H14N2The nicotine is alkaloid existing in solanaceae plants (solanum), is also an important component of tobacco, is widely applied to agricultural pesticides, and can be sealed in wood to enable the wood to have insect-resistant effect.
In addition, the insect-proof solution is alkaline, so that the residual pore-forming solution in wood pores can be effectively decomposed, and tiny pores are generated in the wood for sealing the insect-proof solution.
In addition, when the wood is soaked in the insect-proof solution for less than 12 hours, the insect-proof solution cannot enter pores of the wood, and when the soaking time is longer than 24 hours, the alkaline liquid causes higher corrosion to the wood, so that the final quality of the wood is affected.
The further preferred technical scheme is as follows: the tobacco leaf comprises one or more of safflower tobacco, yellow flower tobacco and white flower tobacco.
The safflower tobacco is selected under the preferable condition of the tobacco leaves, because the germination of the safflower tobacco is proper in temperature of 21-24 ℃, the safflower tobacco germinates 14-15 days after sowing, the growth cycle is short, the output is high, and the tobacco leaves contain rich nicotine, so that the preparation method is an ideal raw material for preparing the insect-proof liquid.
The further preferred technical scheme is as follows: the tobacco leaves are required to be crushed and sieved before use, and a sieve mesh used in the sieving process is 20-200 meshes.
The smashing can be carried out in a chopping mode, a plant smashing machine is adopted for smashing under the optimal condition, the generated tobacco fragments are better and uniform, the tobacco fragments below 20 meshes can remain in the insect-proof liquid, the appearance of subsequent impregnated wood is affected, the cleaning is troublesome, the tobacco fragments above 200 meshes need to be collected for other use or abandoned, the smashing degree of the tobacco fragments above 200 meshes is insufficient, the impregnating effect is not good, and the tobacco fragments need to be collected and then smashed again for use.
The further preferred technical scheme is as follows: and the drying and dehydrating mode in the S5 is natural air drying, and the air drying time is 24-48 h.
Wherein timber heat drying can produce the crack, influences final ligneous quality, and natural air-dry's benefit lies in making the plank keep original appearance on the one hand, and mechanical strength can not descend, thereby on the other hand places the wet timber in the atmosphere and can exchange with the moisture in the atmosphere and reach balanced state, and the moisture content in the timber is unanimous relatively in each position.
The further preferred technical scheme is as follows: the heating carbonization temperature in the S6 is 1000-2000 ℃, and the heating time is 1-5S.
The heating carbonization process adopts an oxygen welding gun to roast so that a thin carbonized layer is formed on the surface of the wood, an MAPP welding gun is generally adopted, the carrying is convenient, the safety and the reliability are realized, the carbonization effect can be achieved on the wood when the MAPP welding gun stays on the surface of the wood for more than 1s, but the MAPP welding gun cannot stay on the same part for more than 5s, otherwise, the hidden danger of burning through the wood or leaving large holes exists, the final quality of the wood is influenced, the surface of the wood after the heating carbonization has dark brown textures, the change of the performance of the wood can be similar to the paint of the wood, but the hidden danger of highlighting the concave-convex wood grains on the surface is better than the paint, the three-dimensional effect is generated, the wood can be well fused with natural plants in park landscaping, and the ornamental effect is good.
In addition, the heating carbonization process causes the surface of the wood to be carbonized to generate a compact layer, and the compact layer has a blocking effect on the insect-proof liquid placed in the wood, so that the insect-proof liquid can stay in the wood for a long time.
In addition, the high temperature generated in the heating carbonization process can further consume the pore-forming salt remained in the wood, so that more storage space is provided for the insect-proof solution.
The further preferred technical scheme is as follows: the wood board to be treated in the S1 is 10-200cm in length, 5-100cm in width and 1-5cm in thickness.
The length of the wood board used in the park landscape is not longer, the length of the wood board is ensured to be below 200cm, the general height of the wood board is below 150cm after installation and lower than the height of general people, the sight line cannot be blocked, the width of the wood board is not more than 100cm, the direction of the wood board can be conveniently controlled during installation, the wood board can be installed into various shapes to meet the requirements of park decoration, the thickness of the wood board is not more than 5cm, on one hand, materials are reduced, the cost is reduced, and on the other hand, the excessively thick wood board is not attractive enough and is not easy to install and transport.
In addition, after the thickness of the wood board to be treated exceeds 5cm, the insect-proof liquid cannot be well injected into the wood board, and the insect-proof effect is poor.
The invention has the advantages that:
1. the wood board has the advantages that the fine gaps are prepared by utilizing the pore-forming agent in the wood board, so that the insect-proof liquid can be conveniently injected into the wood, the retention amount of the insect-proof liquid in the wood is increased, and the insect-proof effect is good;
2. according to the invention, the high-temperature spray gun is used for carbonizing the surface of the wood, a compact carbonization layer is formed on the surface of the wood, the insect-proof liquid is effectively sealed in the wood, and the heat of carbonization further reacts with a pore-forming agent in the wood to form more pores for sealing the insect-proof liquid;
3. the alkaline insect-proof solution can further react with carbonate and ammonium salt in the pore-forming agent to react, so that the internal porosity of the wood is improved, and more insect-proof solution can be reserved;
4. the insect-proof liquid is prepared from natural tobacco, and has small corrosion degree on wood and high affinity.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example 1: a carbonized wood and a preparation method thereof comprise the following steps:
s1, preparing a wood board with the length of 200cm, the width of 100cm and the thickness of 5 cm;
s2, soaking the wood board in the step S1 in a pore-forming solution, wherein the pore-forming solution comprises the following components in parts by weight: 150 parts of purified water and 10 parts of pore-forming salt, wherein the soaking time is 12 hours, and the pore-forming salt is ammonium bicarbonate;
s3, taking out the wood board soaked in the pore-forming liquid in the step S2, and heating for pore-forming at the temperature of 60 ℃ for 5 hours;
s4, soaking the dried wood board in the S3 in an insect-proof solution, wherein the insect-proof solution comprises the following components in parts by weight: adding 5 parts of tobacco leaves and 5 parts of calcium oxide into 300 parts of purified water for soaking for 24 hours, wherein the tobacco leaves are safflower tobacco, and sieving the tobacco leaves with a 200-mesh sieve after crushing;
s5, taking out the wood board soaked in the insect-proof liquid in the step S4, and drying and dehydrating the wood board in a natural air drying mode for 48 hours;
s6, heating and carbonizing the surface of the dried wood board in the step S5 at 2000 ℃ for 5S to obtain the carbonized wood.
In the embodiment, the carbonized wood is installed in a park in an area with annual precipitation of more than 400mm and is installed close to soil, the worm damage rate is below 2% within 3 years, namely, at most 2 visible obvious worm damage holes exist in every 100 wood boards on average, and the insect prevention effect is good.
Example 2: a carbonized wood and a preparation method thereof comprise the following steps:
s1, preparing a wood board with the length of 200cm, the width of 100cm and the thickness of 5 cm;
s2, soaking the wood board in the step S1 in a pore-forming solution, wherein the pore-forming solution comprises the following components in parts by weight: 100 parts of purified water and 7 parts of pore-forming salt, wherein the soaking time is 12 hours, and the pore-forming salt is ammonium bicarbonate;
s3, taking out the wood board soaked in the pore-forming liquid in the step S2, and heating for pore-forming at the temperature of 60 ℃ for 5 hours;
s4, soaking the dried wood board in the S3 in an insect-proof solution, wherein the insect-proof solution comprises the following components in parts by weight: 3 parts of tobacco leaves and 3 parts of calcium oxide, 200 parts of purified water is added for soaking for 24 hours, the tobacco leaves are safflower tobacco, and the safflower tobacco is crushed and sieved by a 200-mesh sieve;
s5, taking out the wood board soaked in the insect-proof liquid in the step S4, and drying and dehydrating the wood board in a natural air drying mode for 48 hours;
s6, heating and carbonizing the surface of the dried wood board in the step S5 at 2000 ℃ for 5S to obtain the carbonized wood.
In the embodiment, the carbonized wood is installed in a park in an area with annual precipitation of more than 400mm and is installed close to soil, the worm damage rate is below 4% within 3 years, namely, at most 4 visible obvious worm damage holes exist in every 100 wood boards on average, and the insect prevention effect is good.
Example 3: a carbonized wood and a preparation method thereof comprise the following steps:
s1, preparing a wood board with the length of 200cm, the width of 100cm and the thickness of 5 cm;
s2, soaking the wood board in the step S1 in a pore-forming solution, wherein the pore-forming solution comprises the following components in parts by weight: 50 parts of purified water and 5 parts of pore-forming salt, wherein the soaking time is 12 hours, and the pore-forming salt is ammonium bicarbonate;
s3, taking out the wood board soaked in the pore-forming liquid in the step S2, and heating for pore-forming at the temperature of 60 ℃ for 5 hours;
s4, soaking the dried wood board in the S3 in an insect-proof solution, wherein the insect-proof solution comprises the following components in parts by weight: 2 parts of tobacco leaves and 2 parts of calcium oxide, and 150 parts of purified water is added for soaking for 24 hours, wherein the tobacco leaves are safflower tobacco, and the safflower tobacco is crushed and sieved by a 200-mesh sieve;
s5, taking out the wood board soaked in the insect-proof liquid in the step S4, and drying and dehydrating the wood board in a natural air drying mode for 48 hours;
s6, heating and carbonizing the surface of the dried wood board in the step S5 at 2000 ℃ for 5S to obtain the carbonized wood.
In the embodiment, the carbonized wood is installed in a park in an area with annual precipitation of more than 400mm and is installed close to soil, the insect-eating rate is below 7% within 3 years, namely, at most 7 visible obvious insect-eating holes are formed in every 100 wood boards on average, and the insect-preventing effect is good.
Comparative example 1: a carbonized wood and a preparation method thereof comprise the following steps:
s1, preparing a wood board with the length of 200cm, the width of 100cm and the thickness of 5 cm;
s2, soaking the wood board in the step S1 in a pore-forming solution, wherein the pore-forming solution comprises the following components in parts by weight: 150 parts of purified water, and soaking for 12 hours, wherein the pore-forming salt is ammonium bicarbonate;
s3, taking out the wood board soaked in the pore-forming liquid in the step S2, and heating for pore-forming at the temperature of 60 ℃ for 5 hours;
s4, soaking the dried wood board in the S3 in an insect-proof solution, wherein the insect-proof solution comprises the following components in parts by weight: adding 5 parts of tobacco leaves and 5 parts of calcium oxide into 300 parts of purified water for soaking for 24 hours, wherein the tobacco leaves are safflower tobacco, and sieving the tobacco leaves with a 200-mesh sieve after crushing;
s5, taking out the wood board soaked in the insect-proof liquid in the step S4, and drying and dehydrating the wood board in a natural air drying mode for 48 hours;
s6, heating and carbonizing the surface of the dried wood board in the step S5 at 2000 ℃ for 5S to obtain the carbonized wood.
In this embodiment, the carbonized wood is installed in a park in an area with annual precipitation of more than 400mm and is installed close to soil, and the moth-eating rate is more than 40% within 3 years, that is, at least 40 obvious moth-eating holes are visible in every 100 wood boards on average, and the insect-preventing effect is poor.
Comparative example 2: a carbonized wood and a preparation method thereof comprise the following steps:
s1, preparing a wood board with the length of 200cm, the width of 100cm and the thickness of 5 cm;
s2, soaking the wood board in the step S1 in a pore-forming solution, wherein the pore-forming solution comprises the following components in parts by weight: 150 parts of purified water and 10 parts of pore-forming salt, wherein the soaking time is 12 hours, and the pore-forming salt is ammonium bicarbonate;
s3, taking out the wood board soaked in the pore-forming liquid in the step S2, and heating for pore-forming at the temperature of 60 ℃ for 5 hours;
s4, soaking the dried wood board in the S3 in an insect-proof solution, wherein the insect-proof solution comprises the following components in parts by weight: 5 parts of calcium oxide, adding 300 parts of purified water for soaking for 24 hours, crushing the tobacco leaves which are safflower tobacco, and sieving the crushed tobacco leaves with a 200-mesh sieve;
s5, taking out the wood board soaked in the insect-proof liquid in the step S4, and drying and dehydrating the wood board in a natural air drying mode for 48 hours;
s6, heating and carbonizing the surface of the dried wood board in the step S5 at 2000 ℃ for 5S to obtain the carbonized wood.
In the embodiment, the carbonized wood is installed in a park in an area with annual precipitation of more than 400mm and is installed close to soil, the worm damage rate is more than 60% within 3 years, namely, at least 60 visible obvious worm damage holes are formed in every 100 wood boards on average, and the insect prevention effect is poor.
Comparative example 3: a carbonized wood and a preparation method thereof comprise the following steps:
s1, preparing a wood board with the length of 200cm, the width of 100cm and the thickness of 5 cm;
s2, soaking the wood board in the step S1 in a pore-forming solution, wherein the pore-forming solution comprises the following components in parts by weight: 150 parts of purified water and 10 parts of pore-forming salt, wherein the soaking time is 12 hours, and the pore-forming salt is ammonium bicarbonate;
s3, taking out the wood board soaked in the pore-forming liquid in the step S2, and heating for pore-forming at the temperature of 60 ℃ for 5 hours;
s4, soaking the dried wood board in the S3 in an insect-proof solution, wherein the insect-proof solution comprises the following components in parts by weight: adding 5 parts of tobacco leaves and 5 parts of calcium oxide into 300 parts of purified water for soaking for 24 hours, wherein the tobacco leaves are safflower tobacco, and sieving the tobacco leaves with a 200-mesh sieve after crushing;
s5, taking out the wood board soaked in the insect-proof liquid in the step S4, and drying and dehydrating the wood board in a natural air drying mode for 48 hours;
s6, heating and carbonizing the surface of the dried wood board in the step S5 at the temperature of 300 ℃ for 5S to obtain the carbonized wood.
In this embodiment, the carbonized wood is installed in a park in an area with annual precipitation of more than 400mm and is installed close to soil, and the moth-eating rate is more than 25% within 3 years, that is, at least 25 visible obvious moth-eating holes are found in every 100 wood boards on average, and the insect-preventing effect is poor.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (10)
1. The preparation method of the carbonized wood is characterized by comprising the following steps:
s1, preparing wood into a cubic wood board to be treated;
s2, soaking the wood board to be treated in a pore-forming solution to obtain a pretreated wood board;
s3, taking the pretreated wood board out of the pore-forming liquid and heating to form pores to obtain a porous wood board;
s4, soaking the porous wood board in insect-proof liquid to obtain an insect-proof wood board;
s5, taking the insect-proof wood board out of the insect-proof liquid, and drying and dehydrating to obtain a dehydrated wood board;
s6, heating and carbonizing the surface of the dehydrated wood board to obtain carbonized wood.
2. The preparation method of carbonized wood according to claim 1, wherein the pore-forming liquid in S2 comprises the following components by weight: 50-150 parts of purified water and 1-10 parts of pore-forming salt, wherein the wood board to be treated is soaked for 6-12 hours.
3. The method for preparing carbonized wood according to claim 2, wherein the pore-forming salt is any one or a mixture of ammonium bicarbonate, ammonium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate.
4. The preparation method of carbonized wood according to claim 1, wherein the heating pore-forming temperature in the step S3 is 40-70 ℃ and the heating time is 1-5 h.
5. The preparation method of carbonized wood as claimed in claim 1, wherein the insect repellent solution in S4 comprises the following components by weight: 1-5 parts of tobacco leaves, 1-5 parts of calcium oxide and 60-300 parts of purified water are added and mixed for 12-24 hours.
6. The method for preparing carbonized wood according to claim 5, wherein the tobacco leaves comprise one or more of safflower tobacco, yellow flower tobacco and white flower tobacco.
7. The method for preparing carbonized wood according to claim 5, wherein the tobacco leaves need to be crushed and sieved before use, and the mesh used in the sieving process is 20-200 meshes.
8. The method for preparing carbonized wood according to claim 1, wherein the drying and dewatering manner in S5 is natural air drying, and the air drying time is 24-48 h.
9. The method as claimed in claim 1, wherein the heating carbonization temperature in S6 is 1000-2000 ℃ and the heating time is 1-5S.
10. The method of producing carbonized wood as claimed in claim 1, wherein the wood board to be treated in S1 has a length of 10-200cm, a width of 5-100cm and a thickness of 1-5 cm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104526829A (en) * | 2015-01-21 | 2015-04-22 | 郑州红日家俱有限责任公司 | Method for manufacturing surface-carbonized furniture |
| CN105922416A (en) * | 2016-05-17 | 2016-09-07 | 三江县善茶轩工艺品有限公司 | Mothproof treatment method of phyllostachys pubescens products |
| CN106064419A (en) * | 2016-07-29 | 2016-11-02 | 安徽昌发实业有限公司 | A kind of manufacture method of surface carbonation chair |
| CN108515596A (en) * | 2018-03-30 | 2018-09-11 | 吕莉 | A kind of preparation method of insect prevention timber |
| CN109249499A (en) * | 2018-10-17 | 2019-01-22 | 合肥月煌新型装饰材料有限公司 | A kind of processing method of furniture wooden boards |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526829A (en) * | 2015-01-21 | 2015-04-22 | 郑州红日家俱有限责任公司 | Method for manufacturing surface-carbonized furniture |
| CN105922416A (en) * | 2016-05-17 | 2016-09-07 | 三江县善茶轩工艺品有限公司 | Mothproof treatment method of phyllostachys pubescens products |
| CN106064419A (en) * | 2016-07-29 | 2016-11-02 | 安徽昌发实业有限公司 | A kind of manufacture method of surface carbonation chair |
| CN108515596A (en) * | 2018-03-30 | 2018-09-11 | 吕莉 | A kind of preparation method of insect prevention timber |
| CN109249499A (en) * | 2018-10-17 | 2019-01-22 | 合肥月煌新型装饰材料有限公司 | A kind of processing method of furniture wooden boards |
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