CN110053120B - Carbonization treatment method of solid wood board - Google Patents
Carbonization treatment method of solid wood board Download PDFInfo
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- CN110053120B CN110053120B CN201910309133.XA CN201910309133A CN110053120B CN 110053120 B CN110053120 B CN 110053120B CN 201910309133 A CN201910309133 A CN 201910309133A CN 110053120 B CN110053120 B CN 110053120B
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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
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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
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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
- B27K5/003—Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
- B27K5/0065—Ultrasonic treatment
-
- 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
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09J123/0853—Vinylacetate
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a carbonization treatment method of a solid wood board, which relates to the technical field of carbonization of the solid wood board.
Description
Technical Field
The invention relates to the technical field of carbonization of solid wood boards, in particular to a carbonization treatment method of solid wood boards.
Background
According to the display of the existing forestry data, China becomes a world large country for production, processing, consumption and import and export of forest products. Wood in China is mainly used for preparing home decoration products and household products, on one hand, the wood products are easy to process, on the other hand, the wood products are environment-friendly and harmless and can be regenerated, so the wood products are more and more widely used.
The solid wood board is completely prepared from raw wood, and the original shape and fragrance of the wood are retained to the maximum extent in the processing process, so that the solid wood board is beneficial to human health, durable and good in moisture absorption performance, and is a preferred material for preparing high-grade furniture. The most important property of wood for home decoration or furniture is to create a comfortable and clean look. The texture form and the grain definition of wood and the visual sense of a wood product are closely related, and nowadays, the individuality is revealed, the household and indoor design styles are changeable, and higher requirements are provided for the surface characteristics of the wood product.
The applicant finds that at present, in order to produce wood products with strong visual sense, the surface of wood is mostly coated with grains, or glued or pressed with high polymer materials with grains, the preparation process not only brings a new pollution source, but also the prepared grains lose the original visual sense of the wood and have higher distortion.
Disclosure of Invention
In view of the above, the present invention is directed to a method for carbonizing a solid wood board, which is used to improve the grain definition of the solid wood board and maintain the original wood properties of the solid wood board.
The invention provides a carbonization treatment method of solid wood boards based on the above purpose, which comprises the following steps,
performing surface treatment, namely performing primary surface smoothing on the solid wood board, spraying hot melt adhesive, drying, and performing infrared photoetching along required textures to form glue grooves with different depths;
carbonizing, namely carbonizing the photoetched solid wood board at 470-530 ℃ for 1.5-2.5 h, wherein the rubber grooves with different depths form carbonized textures with different depths;
etching, namely etching the carbonized solid wood board along the required textures to deepen the discrimination of depth and/or color between the textures;
and (3) polishing, namely polishing the etched solid wood board, removing the soft carbonized part of the solid wood board, and keeping the etched clear texture.
Optionally, the hot melt adhesive comprises the following components in parts by weight: 3-10 parts of glucose, 100 parts of EVA hot melt adhesive and 0.5-2.5 parts of multilayer graphene.
Optionally, the hot melt adhesive is prepared by a method including dissolving and mixing glucose and water according to a ratio of 1: 5-8, adding multilayer graphene, stirring, heating for saccharification, adding the EVA hot melt adhesive, continuously stirring until the EVA hot melt adhesive is completely molten, heating to 95-110 ℃, keeping the temperature, stirring for 2-5 hours, cooling, and crushing.
Optionally, the thickness of the hot melt adhesive is 1.5-3.5 mm.
Optionally, the wavelength of the infrared lithography is 3-10 μm, and the duration is 20-45 min.
Optionally, the etching process is infrared lithography, laser lithography, or acid etching.
Optionally, the acid etching step is as follows: and (3) spraying concentrated sulfuric acid with the concentration of 98% along the carbonized textures, then carrying out ultrasonic radiation dipping on the solid wood board for 40-70 min, removing redundant concentrated sulfuric acid, and drying.
Optionally, the frequency of the ultrasonic radiation is 25 to 40 KHz.
Optionally, the solid wood board is a oak board.
From the above, the carbonization treatment method of the solid wood board provided by the invention comprises the steps of firstly carrying out surface treatment on the solid wood board, primarily smoothing to remove unevenness and impurities on the surface, and spraying hot melt adhesive and infrared photoetching on the primarily smoothed solid wood in order to form textures with different depths and color degrees in the subsequent carbonization process, so that glue grooves with different depths are formed on the surface of the solid wood, and the surface layer of the solid wood is quickly heated and carbonized at the deep part of the glue groove, and the shallow part of the glue groove has a slightly low carbonization degree; carbonizing the surface-treated solid wood board, wherein the carbonizing temperature is 470-530 ℃, the main components of the wood are lignin and cellulose, the optimal carbonizing temperature of the lignin is 500-700 ℃, the optimal carbonizing temperature of the cellulose is 400-500 ℃, in order to form carbonized textures with different colors in the carbonizing process of the lignin and the cellulose, the carbonizing temperature is 470-530 ℃ in order to save energy consumption, the same test data shows that the prepared textures with good color and visual sense in the temperature range are obtained, finally, etching and surface soaking are carried out on the carbonized solid wood board, the etching treatment is favorable for deepening the distinction degree of depth and/or color between the textures, the surface polishing treatment is carried out to remove the carbonized soft part of the solid wood board, the etched clear textures are reserved, the whole preparation process is environment-friendly and energy-saving, and the visual sense, the reality and the texture of the solid wood are reserved to the greatest extent, meanwhile, the existing texture of the wood can be modified, so that the pattern of the solid wood board is increased.
Drawings
FIG. 1 is a schematic structural view of a solid wood board after surface treatment according to an embodiment of the present invention;
FIG. 2 is a surface view of a white oak board treated in different steps according to an embodiment of the present invention;
FIG. 3 is a surface texture map of a white oak board according to an embodiment of the present invention;
fig. 4 is a schematic view of the position of the polishing process according to the embodiment of the present invention.
1-solid wood board, 2-hot melt adhesive layer, 21-deep adhesive groove, 22-shallow adhesive groove, and 3-polishing position.
Detailed Description
In the following description of the embodiments, the detailed description of the present invention, such as the manufacturing processes and the operation and use methods, will be further described in detail to help those skilled in the art to more fully, accurately and deeply understand the inventive concept and technical solutions of the present invention.
In order to solve the problems of poor visual sense and high distortion degree of the texture of the solid wood board in the prior art, the embodiment of the invention provides a carbonization treatment method of the solid wood board, which comprises the following steps,
performing surface treatment, namely performing primary surface smoothing on the solid wood board, spraying hot melt adhesive, drying, and performing infrared photoetching along required textures to form glue grooves with different depths;
carbonizing, namely carbonizing the photoetched solid wood board at 470-530 ℃ for 1.5-2.5 h, wherein the rubber grooves with different depths form carbonized textures with different depths;
etching, namely etching the carbonized solid wood board along the required textures to deepen the discrimination of depth and/or color between the textures;
and (3) polishing, namely polishing the etched solid wood board, removing the soft carbonized part of the solid wood board, and keeping the etched clear texture.
Firstly, carrying out surface treatment on a solid wood plate, primarily smoothing the surface to remove unevenness and impurities on the surface, and spraying hot melt adhesive and infrared photoetching on the primarily smoothed solid wood in order to form textures with different depths and color degrees in the subsequent re-carbonization process, so that glue grooves with different depths are formed on the surface of the solid wood, wherein the surface layer of the solid wood is quickly heated and carbonized in the carbonization process of the part with the deep glue groove, and the carbonization degree is slightly lower in the part with the shallow glue groove; meanwhile, in order to save energy consumption, the carbonization temperature is 470-530 ℃, and finally, the carbonized solid wood board is subjected to etching treatment and surface soaking treatment, wherein the etching treatment is favorable for deepening the depth and/or color distinction among the textures, the surface polishing treatment is used for removing the soft carbonized part of the solid wood board, the etched clear textures are reserved, the whole preparation process is environment-friendly and energy-saving, the visual sense and the reality of the solid wood are reserved to the maximum extent, the grains are clear, and meanwhile, the existing grains of the wood can be modified, so that the pattern style of the solid wood board is increased.
To further illustrate the implementation of the object of the present invention, an embodiment of the present invention provides a method for carbonizing a solid wood panel, including,
performing surface treatment, performing rough grinding and polishing on the surface of the shaped solid wood board, removing impurities, unevenness and spurs on the surface, keeping the surface dry, spraying hot melt adhesive by adopting the hot melt adhesive, wherein the average thickness of the sprayed hot melt adhesive is 2.5mm, then placing the solid wood board at the temperature of 30-40 ℃ for hot air drying, horizontally placing the dried solid wood board on the table top of a photoetching machine, opening an infrared emitter of the photoetching machine, adjusting the wavelength to be 3-10 mu m, firstly along the texture needing deepening carbonization, preheating the hot melt adhesive layer by adopting an infrared photoetching technology for 10-15 min, then performing infrared photoetching along the preheated texture for 25min, forming glue grooves with different depths on the surface of the solid wood board after the infrared photoetching, forming a thin hot melt adhesive layer covering the surface of the solid wood board, and easily heating and carbonizing to form a deep-colored carbonized texture during carbonization, on the contrary, the wood board is not easily heated and carbonized during carbonization to form carbonized textures with light colors, and the structural schematic diagram of the wood board processed in the step is shown in fig. 1;
wherein the hot melt adhesive comprises the following components in parts by weight: glucose 6.5 parts, EVA hot melt adhesive 100 parts and multilayer graphene 1.8 parts, which are prepared by the following method, glucose and water are dissolved and mixed according to a ratio of 1:7, 4-layer multilayer graphene is added, stirring and heating are carried out simultaneously for saccharification, due to the viscosity of sugar, the graphene layers are mutually inserted and connected under the stirring effect, and are uniformly distributed in sugar water, meanwhile, a plurality of functional groups on the surface of the graphene can form hydrogen bond connection with functional groups of a glucose water solution in the heating process, then the EVA hot melt adhesive is added, the EVA hot melt adhesive is continuously stirred until the EVA hot melt adhesive is completely molten, the EVA hot melt adhesive is heated to 95-110 ℃, the EVA hot melt adhesive is completely molten, the glucose still maintains a complete molecular chain structure and is wound and connected with an EVA molecular chain, the added graphene is filled in winding gaps, the EVA is modified, the EVA hot melt adhesive is kept warm and stirred for 2-5 hours, and cooling and crushing to obtain hot melt adhesive powder, mixing the prepared hot melt adhesive and ethanol according to the material-liquid ratio of 1: 0.5-1.2 in the using process, putting the mixture into a hot melt gun for spraying, and heating the ethanol to volatilize in the spraying process so as to facilitate the spraying glue to form uniformly refined colloidal particles which are paved on the surface of the solid wood board.
Carbonizing treatment, namely putting the solid wood board subjected to infrared photoetching into a carbonizing chamber, carbonizing treatment is carried out, the carbonizing temperature is 510 ℃, the carbonizing time is 2h, carbonized textures with different depths are formed due to the influence of heat in the carbonizing process, simultaneously carbonized textures with different colors can also appear in the carbonizing process due to the difference of the carbonizing temperatures of lignin and cellulose in the solid wood board, disordered and fine textures with different colors and depths are respectively uneven on the periphery of the carbonized solid wood board textures, which is also the phenomenon of texture distortion easily appearing in the prior art due to the fact that only carbonizing treatment is carried out in the carbonizing process, glucose and graphene added in hot melt adhesive are firstly melted, and then the added glucose is dehydrated and carbonized in the heating process and simultaneously combined with the graphene, the two materials are fused in hot melt adhesive, and the impression of secondary carbonization is formed on the surface of the wood, so that the carbonization texture is deepened, as shown in figure 2 (A).
Etching, namely removing carbon dust on the surface layer of the carbonized solid wood board, then placing the carbonized solid wood board on an etching table, and carrying out infrared light etching treatment along the required textures by adopting the same photoetching mode as surface treatment, wherein the step is to overcome the texture distortion phenomenon caused by only carbonizing in the prior art, and etch deepen the depth and/or color distinction between the textures, so that the prepared solid wood board has clear textures, i.e. strong visual sense, as shown in figure 2 (B), compared with the texture loss of figure 2 (A), the wood textures in figure 2 (B) are more ordered and clear, and the two figures adopt the same white oak and two wood boards which are symmetrical relative to the center of a tree.
And (3) polishing, namely polishing the etched solid wood board, removing the soft carbonized part of the solid wood board, keeping the hard part with clear carbonized textures, wherein the polishing position is shown in fig. 4, and the textures of the finally prepared solid wood board are shown in fig. 3 (A). Fig. 3 (B) shows the grain of the white oak produced in the prior art, which has more miscellaneous grains, i.e., poor visual sensation. To obtain the product 1.
The two embodiments of the invention are the same as the first embodiment of the invention, except that the hot melt adhesive in the two embodiments of the invention comprises the following components in parts by weight: 3 parts of glucose, 100 parts of EVA hot melt adhesive and 0.5 part of multilayer graphene, wherein the carbonization temperature is 470 ℃, and the carbonization time is 1.5 hours. And obtaining a product 2.
The three embodiments of the invention are the same as the first embodiment, except that the hot melt adhesive in the three embodiments of the invention comprises the following components in parts by weight: 10 parts of glucose, 100 parts of EVA hot melt adhesive and 2.5 parts of multilayer graphene, wherein the carbonization temperature is 530 ℃, and the carbonization time is 2.5 hours. To obtain a product 3.
The fourth embodiment of the present invention is the same as the first embodiment thereof, except that the etching treatment in the fourth embodiment of the present invention adopts acid etching, and the specific steps are as follows: and (3) spraying concentrated sulfuric acid with the concentration of 98% along the carbonized textures, then carrying out ultrasonic radiation dipping on the solid wood board for 40-70 min at the frequency of 25-40 KHz, removing redundant concentrated sulfuric acid, and drying. And obtaining a product 4.
Meanwhile, acid etching is also adopted in the etching treatment in the second embodiment and the third embodiment, and the specific steps are as follows: and (3) spraying concentrated sulfuric acid with the concentration of 98% along the carbonized textures, then carrying out ultrasonic radiation dipping on the solid wood board for 40-70 min at the frequency of 25-40 KHz, removing redundant concentrated sulfuric acid, and drying. To obtain a product 5 and a product 6.
The solid wood boards used in the above examples are all oak boards, and are 10 raw oak boards.
Meanwhile, density detection is carried out on the products 1-6 prepared in the embodiment by adopting a testing method in GB/T1933-2009, the detection results are all qualified, meanwhile, tests on bending strength, compression strength and shearing strength are carried out by adopting a testing method in GB/T29418-2012, and the performances of the products 1-6 prepared in the embodiment of the invention all meet the requirements in GB/T29418-2012.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. A carbonization treatment method of solid wood boards is characterized by comprising the following steps,
performing surface treatment, namely performing primary surface smoothing on the solid wood board, spraying hot melt adhesive, drying, and performing infrared photoetching along required textures to form glue grooves with different depths;
carbonizing, namely carbonizing the photoetched solid wood board at 470-530 ℃ for 1.5-2.5 h, wherein the rubber grooves with different depths form carbonized textures with different depths;
etching, namely etching the carbonized solid wood board along the required textures to deepen the discrimination of depth and/or color between the textures;
and (3) polishing, namely polishing the etched solid wood board, removing the soft carbonized part of the solid wood board, and keeping the etched clear texture.
2. The carbonization treatment method of the solid wood board according to claim 1, wherein the hot melt adhesive comprises the following components in parts by weight: 3-10 parts of glucose, 100 parts of EVA hot melt adhesive and 0.5-2.5 parts of multilayer graphene.
3. The carbonization treatment method of the solid wood panel according to claim 1, wherein the hot melt adhesive is prepared by dissolving and mixing glucose and water according to a ratio of 1: 5-8, adding the multilayer graphene, stirring, heating for saccharification, then adding the EVA hot melt adhesive, continuously stirring until the EVA hot melt adhesive is completely melted, heating to 95-110 ℃, keeping the temperature, stirring for 2-5 h, cooling, and crushing.
4. The carbonization treatment method of the solid wood panel according to claim 1, wherein the thickness of the hot melt adhesive is 1.5 to 3.5 mm.
5. The carbonization treatment method of the solid wood board according to claim 1, wherein the wavelength of the infrared lithography is 3 to 10 μm, and the duration is 20 to 45 min.
6. The carbonization treatment of the solid wood panel according to claim 1, wherein the etching treatment is infrared lithography, laser lithography, or acid etching.
7. The method for carbonizing a solid wood panel according to claim 6, wherein the acid etching step is as follows: and (3) spraying concentrated sulfuric acid with the concentration of 98% along the carbonized textures, then carrying out ultrasonic radiation dipping on the solid wood board for 40-70 min, removing redundant concentrated sulfuric acid, and drying.
8. The carbonization treatment method of the solid wood panel according to claim 7, wherein the frequency of the ultrasonic radiation is 25 to 40 KHz.
9. The carbonization treatment method of the solid wood board according to claim 1, wherein the solid wood board is an oak board.
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| CN1324715A (en) * | 2000-05-22 | 2001-12-05 | 苏岫峰 | Stereo treatment technique of wooden articles |
| JP2005186539A (en) * | 2003-12-26 | 2005-07-14 | Olympus Corp | Working method of wood surface |
| CN102134903B (en) * | 2011-01-24 | 2012-08-29 | 浙江世友木业有限公司 | Solid wood composite antique floor and manufacturing method thereof |
| CN105690529B (en) * | 2016-02-17 | 2018-05-11 | 江苏肯帝亚木业有限公司 | A kind of carbonized solid wood composite floor board surface color treatment process |
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