CN112847705A - Preparation method of decorative solid wood surface layer plate - Google Patents
Preparation method of decorative solid wood surface layer plate Download PDFInfo
- Publication number
- CN112847705A CN112847705A CN202011638070.1A CN202011638070A CN112847705A CN 112847705 A CN112847705 A CN 112847705A CN 202011638070 A CN202011638070 A CN 202011638070A CN 112847705 A CN112847705 A CN 112847705A
- Authority
- CN
- China
- Prior art keywords
- plate
- solid wood
- surface layer
- wood
- wood surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
-
- 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
- B27K3/163—Compounds of boron
-
- 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
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention provides a method for preparing a solid wood surface layer board for decoration, which takes low-cost low-quality artificial forest wood as a raw material, and the low-cost low-quality artificial forest wood is firstly subjected to corrosion prevention and high-temperature carbonization treatment, then is subjected to planing, lengthening and width splicing to prepare a large-size board, and finally is subjected to surface subdivision to prepare the solid wood surface layer material for decoration. According to the invention, the anticorrosion agent is impregnated under vacuum pressure, so that the anticorrosion and insect-proof performances of the artificial forest plate are improved; through high-temperature carbonization treatment, the growth stress of low-quality artificial forest wood is released, the hydrophilic groups of the wood are reduced, the hygroscopicity is reduced, the size of the wood is more stable, the corrosion resistance and the mildew resistance are improved, bacteria and insects can be resisted, the color of the wood is deepened, and the texture is highlighted; the decorative solid wood surface layer material prepared by the invention has the advantages of elegant color, beautiful texture, good decorative effect, stable size, good paint property, rich raw material source, low price, capability of saving a large amount of precious and high-quality tree species resources, bacteria and insect resistance, mildew resistance, good corrosion resistance and the like.
Description
Technical Field
The invention relates to the field of decorative materials, in particular to a preparation method of a solid wood surface layer plate for decoration.
Background
In recent years, solid wood composite floors are the fastest-developing products in floors in China, and mainly comprise three-layer solid wood composite floors and multi-layer solid wood composite floors, wherein surface layer materials mostly adopt precious hardwood material species with hard texture and beautiful texture, such as teak, eggplant-printed wood, lapacho, black walnut, cherry, red oak, beech, maple and the like. The hardwood resources have long wood forming period and high price, some hardwood resources are produced from tropical original rainforests, and a large amount of hardwood resources are consumed in China every year and are used in the field of solid wood composite floors. With the great reduction of precious hardwood resources worldwide, forest resource protection and ecological environment protection industry worldwide has developed, so that available good tree species are reduced, and the raw material supply is in short supply, so that how to produce the solid wood composite floor surface board by using low-quality artificial forest wood is a consensus in the floor industry of all countries worldwide.
The Heat Modified Wood (also commonly called deep carbonized Wood) is heated by a Heat transfer medium under the condition of high temperature and pressure, so that the quality of the Wood is improved, the moisture absorption and water absorption of the Wood are reduced, the dimensional stability, the biological corrosion resistance and the weather resistance are improved, and a Wood product with excellent performance and beautiful color is prepared. The products with slightly different performances can be obtained by controlling different heat transfer media and different heating temperatures, curing, coloring, surface burning and the like in the manufacturing process. However, the medium adopted in the prior art is difficult to completely remove after thermal modification treatment, is not environment-friendly or has poor modification effect.
Disclosure of Invention
The invention provides a preparation method for producing a decorative solid wood surface layer board by using low-quality artificial forest wood, which is efficient and environment-friendly, and aims to solve the problems that the raw material supply of a solid wood composite floor is short, the price is high, and the existing thermal modification medium is not environment-friendly or the modification effect is poor.
The invention relates to a preparation method of a solid wood surface layer plate for decoration, which comprises the following steps:
1) and (3) corrosion prevention: putting the newly sawed artificial forest plate into an anti-corrosion device, setting the boron drug loading capacity, impregnating a boron anti-corrosion medicament through vacuum pressure, discharging after the drug loading capacity is reached, and air-drying to obtain an anti-corrosion wet plate;
2) drying and carbonizing: drying the anticorrosive wet plate prepared in the step 1) until the water content is 10-30%, discharging, and balancing for later use; putting the balanced plate into a carbonization device, heating to 160-215 ℃, preserving heat for 0-6 h, carrying out carbonization treatment, cooling, discharging and balancing to obtain a carbonized plate;
3) fine cutting and polishing: removing defects of the carbonized sheet material prepared in the step 2), finely cutting, and planing four sides to obtain small strips;
4) lengthening and widening: coating an adhesive on the end part of the small plate strip prepared in the step 3) for lengthening, and then performing four-side polishing to prepare a long plate strip; coating adhesive along the side surface of the long lath, and widening to obtain a large plate;
5) subdividing: and (4) dividing the large plate manufactured in the step 4) into thin plates with the specified thickness along the thickness direction, sanding and finely cutting to manufacture the solid wood surface layer plate.
Further, the artificial forest plate is any one of rubber tree wood, eucalyptus wood, birch wood, poplar wood and acacia wood.
Furthermore, the artificial forest plate is low-quality rubber tree wood, birch wood and poplar wood which are light white in color, unclear in texture, poor in dimensional stability, easy to mildew and rot, and prone to worm corrosion, black lines and scars.
Further, in the step 1), the boron-based preservative is at least one of boric acid, sodium tetraborate and sodium octaborate.
Further, in the step 1), vacuum pressure impregnation is performed by firstly vacuumizing to a vacuum degree of-0.06 to-0.1 MPa, keeping for 15-30 min, and then pressurizing to a vacuum degree of 0.8-1.5 MPa, and keeping for 45-90 min.
Further, in the step 1), the boron drug loading rate is set to be 2.8-4.5 Kg/m3A plate material.
Further, in the step 2), the drying is carried out until the water content is 10-12%.
Further, in the step 2), the carbonization treatment is to heat the material to 130 ℃ by adopting superheated steam at a speed of increasing the temperature by 3-6 ℃ per hour, preserve heat for 1-3 hours, and heat the material to 180-215 ℃ at a speed of increasing the temperature by 6-10 ℃ per hour, and preserve heat for 0-2 hours.
Further, in the step 2), the temperature is reduced to 30-45 ℃ at a speed of 6-8 ℃ per hour.
Further, in the step 2), the balance is to place the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 10-18 h.
Furthermore, the extension is performed by applying pressure to the end of the small plate strip by means of coating adhesive on a flat opening or coating adhesive on a finger tenon.
Furthermore, the width splicing is realized by coating adhesive along the width or thickness direction of the long lath and pressing.
Further, the pressure is 1.2 to 1.8 MPa.
Further, the adhesive is at least one of vinyl acetate emulsion, isocyanate, urea formaldehyde, phenolic resin and melamine formaldehyde glue.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the boron anti-corrosion agent is impregnated under vacuum pressure, so that the anti-corrosion and insect-proof performances of the artificial forest plate are improved; by controlling the water content of the artificial forest wood, the cracking and deformation of the board caused by excessive water content in the subsequent carbonization process are avoided while the carbonization treatment effect is ensured; after the dried artificial forest wood is carbonized at high temperature, huge growth stress of the wood is released, hydrophilic groups of the wood are reduced, hygroscopicity is reduced, the size of the wood is more stable, the corrosion resistance and the mildew resistance of the wood are further improved, and meanwhile, the color of the wood is deepened and the texture is highlighted; the splicing technology is adopted, so that the large-breadth utilization of the small-specification plate is realized, and the size stability and the surface decoration effect are improved simultaneously through pressure splicing; and two times of balance treatment is adopted before and after the carbonization treatment, so that the cracking and deformation of the plate can be effectively avoided. The decorative solid wood surface layer material prepared by the invention has the advantages of elegant color, beautiful texture, good decorative effect, stable size, good paint property, bacteria and insect resistance, mildew resistance, good corrosion resistance and the like.
Furthermore, the artificial forest board is subjected to vacuum pumping impregnation and then pressure impregnation, so that the anticorrosion agent can better act on the inside of the board, and the anticorrosion and insect prevention performances of the artificial forest board are improved by controlling the medicine loading amount of the anticorrosion agent impregnation; the invention controls the heating rate in the carbonization process and the cooling rate after the carbonization, so that the internal structure of the plate is more stable, and the dimensional stability of the plate is improved; according to the invention, after the board is subjected to antiseptic treatment, the low-quality artificial forest board which is originally light white in color, poor in decoration effect, more in black line scabs and easy to mildew, decay and moth-eaten completely meets the use requirement of the decorative surface layer board through a purely physical carbonization modification method, the phenomenon that the decorative surface layer board is manufactured by originally relying on imported large-diameter precious hard broad-leaved wood can be relieved, the application field of the artificial forest wood is expanded, the raw material sources are rich, the price is low, the production cost of enterprises is greatly reduced, the high added value utilization of the artificial forest wood is realized, the market prospect is wide, the controllability of the raw material sources is ensured, and the method has positive significance for reducing the harvest of valuable woods, protecting forest resources and maintaining the ecological environment.
Drawings
FIG. 1 is a schematic structural view of the long slats of the unit elements of the structure of FIG. 2 or 3;
FIG. 2 is a schematic structural view of a large plate spliced by a flat seam along the width direction in example 1;
FIG. 3 is a schematic structural view of a large plate spliced by a flat seam along the thickness direction in example 2;
FIG. 4 is a schematic view of the construction of the elongated slats of the unit elements of the construction of FIGS. 5 or 6;
FIG. 5 is a schematic structural view of a large plate spliced by finger joints in the width direction in example 3;
FIG. 6 is a schematic structural view of a large plate formed by finger tenon splicing in the thickness direction in example 4;
FIG. 7 is a solid wood facing sheet of example 1;
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The artificial forest sheets used in examples 1-2, 4-8 and comparative examples 1-3 were low-quality rubber tree woods; example 3 the plantation board used was eucalyptus wood.
Example 1
A preparation method of a solid wood surface layer plate for decoration comprises the following steps:
1) and (3) corrosion prevention: putting the newly sawed artificial forest plate into an anti-corrosion device, and setting the boron drug loading rate to be 3.2Kg/m3The sheet material is prepared by firstly vacuumizing to the vacuum degree of-0.08 Mpa, keeping for 20min, pressurizing to 0.95Mpa, keeping for 60min, soaking boric acid, discharging after the drug loading is achieved, and air drying to obtain the anticorrosion wet sheet material;
2) drying and carbonizing: drying the anticorrosive wet plate prepared in the step 1) at a low temperature until the water content is 12%, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 12h, then placing the plate in a carbonization device, heating the plate to 130 ℃ by adopting superheated steam at the speed of increasing the temperature by 5 ℃ per hour for heat preservation for 1 h, heating the plate to 205 ℃ at the speed of increasing the temperature by 8 ℃ per hour for heat preservation for 1 h, cooling and cooling at the speed of reducing the temperature by 8 ℃ per hour, discharging when the temperature in the device is reduced to 45 ℃, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 16h, and obtaining a carbonized plate;
3) fine cutting and polishing: removing defects of the carbonized sheet prepared in the step 2), finely cutting the carbonized sheet into a sheet bar with the length of 625mm, and performing four-side polishing, wherein the width of the polished sheet bar is 90mm, and the thickness of the polished sheet bar is 52mm, so as to obtain a small sheet bar;
4) lengthening and splicing width: after the end part of the small lath prepared in the step 3) is pressed and lengthened by coating adhesive (polyvinyl acetate emulsion adhesive) at a flat opening, four sides are polished to prepare a long lath with the specification length of 2500mm, the width of 85mm and the thickness of 50.5 mm; coating adhesives (polyvinyl acetate emulsion adhesives and isocyanate adhesives) along the width direction of the long lath, pressing and widening the long lath, and sanding the long lath into a large plate with the length of 2500mm, the width of 245mm and the thickness of 50mm, wherein the mass ratio of the polyvinyl acetate emulsion adhesives to the isocyanate adhesives in the adhesive coated along the width direction is 9: 1;
5) subdividing: longitudinally cutting the large plate prepared in the step 4) by using a frame saw, uniformly cutting the thickness of the large plate into a thin plate with the thickness of 4mm, sanding, and cutting edges to prepare the wide-spliced solid wood surface layer plate with the specification length of 2480mm, the width of 240mm and the thickness of 3.8 mm.
Example 2
A preparation method of a solid wood surface layer plate for decoration comprises the following steps:
1) and (3) corrosion prevention: putting the newly sawed artificial forest plate into an anti-corrosion device, and setting the boron drug loading rate to be 2.8Kg/m3The sheet material is prepared by firstly vacuumizing to the vacuum degree of-0.06 Mpa, keeping for 30min, pressurizing to 1.5Mpa, keeping for 45min, dipping sodium tetraborate, discharging after the drug loading is achieved, and air drying to obtain the anticorrosion wet sheet material;
2) drying and carbonizing: drying the anticorrosive wet plate prepared in the step 1) until the water content is 30%, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 10 hours, then placing the plate in a carbonizing device, heating the plate to 130 ℃ by adopting superheated steam at the speed of increasing 6 ℃ per hour, heating the plate to 185 ℃ at the speed of increasing 10 ℃ per hour, cooling the plate at the speed of reducing 7 ℃ per hour, discharging the material when the temperature in the device is reduced to 35 ℃, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 10 hours, and obtaining a carbonized plate;
3) fine cutting and polishing: removing defects of the carbonized sheet prepared in the step 2), finely cutting the carbonized sheet into a strip with the length of 200-350 mm, and performing four-side polishing, wherein the width after polishing is 92mm and the thickness is 22mm, so as to obtain a small strip;
4) lengthening and splicing width: pressurizing and lengthening the end part of the small lath prepared at the end part of the small lath prepared in the step 3) by coating an adhesive (polyvinyl acetate emulsion adhesive) at a flat opening, and then performing four-side polishing to prepare a long lath with the specification length of 1000mm, the width of 90.5mm and the thickness of 20.5 mm; coating adhesives (polyvinyl acetate emulsion adhesives and isocyanate adhesives) along the thickness direction of the long lath, pressing and widening the long lath, and sanding the long lath into a large plate with the length of 1000mm, the width of 140.5mm and the thickness of 90mm, wherein the mass ratio of the polyvinyl acetate emulsion adhesives to the isocyanate adhesives in the adhesive coated along the thickness direction is 6: 1.
5) Subdividing: longitudinally cutting the large plate prepared in the step 4) by using a frame saw machine, uniformly cutting the thickness of the large plate into thin plates with the thickness of 8mm, sanding, cutting edges, and preparing the thick spliced surface layer plate with the specification length of 980mm, the width of 135mm and the thickness of 7.8 mm.
Example 3
Example 3 differs from example 1 in that:
step 4) lengthening and width splicing, namely performing finger tenon processing on the small plate strips prepared in the step 3), coating an adhesive (polyvinyl acetate emulsion adhesive) on the finger tenon at the end parts of the small plate strips, performing pressure lengthening, and performing four-side polishing to prepare long plate strips with the specification length of 2500mm, the width of 85mm and the thickness of 50.5 mm; coating adhesives (polyvinyl acetate emulsion adhesives and isocyanate adhesives) along the width direction of the long lath, pressing and widening the long lath, and sanding the long lath into a large plate with the length of 2500mm, the width of 245mm and the thickness of 50mm, wherein the mass ratio of the polyvinyl acetate emulsion adhesives to the isocyanate adhesives in the adhesive coated along the width direction is 5: 1.
Example 4
Example 4 differs from example 2 in that:
step 4) lengthening and splicing, namely performing finger tenon processing on the small plate strips prepared in the step 3), coating an adhesive (polyvinyl acetate emulsion adhesive) on the finger tenon at the end parts of the small plate strips, performing pressure lengthening, and performing four-side polishing to prepare long plate strips with the specification length of 1000mm, the width of 90.5mm and the thickness of 20.5 mm; coating adhesives (polyvinyl acetate emulsion adhesives and isocyanate adhesives) along the thickness direction of the long lath, pressing and widening the long lath, and sanding the long lath into a large plate with the length of 1000mm, the width of 140.5mm and the thickness of 90mm, wherein the mass ratio of the polyvinyl acetate emulsion adhesives to the isocyanate adhesives in the adhesive coated along the thickness direction is 9: 1.
Example 5
Example 5 differs from example 1 in that:
in the step 2), the carbonization treatment is to adopt superheated steam to heat to 130 ℃ at a speed of increasing 8 ℃ per hour and preserve heat for 1 hour, then heat to 205 ℃ at a speed of increasing 8 ℃ per hour and preserve heat for 1 hour.
Example 6
Example 6 differs from example 1 in that:
and 2) drying and carbonizing, namely drying the anticorrosive wet plate prepared in the step 1) at a low temperature until the water content is 12%, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 12 hours, then placing the plate in a carbonizing device, heating the plate to 130 ℃ by adopting superheated steam at a speed of increasing the temperature by 5 ℃ per hour, preserving the heat for 1 hour, increasing the temperature by 8 ℃ per hour, heating the plate to 215 ℃ and preserving the heat for 1 hour, cooling the plate at a speed of reducing the temperature by 5 ℃ per hour, discharging the material when the temperature in the device is reduced to 45 ℃, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 16 hours, and obtaining the carbonized plate.
Example 7
Example 7 differs from example 1 in that:
step 1) anticorrosion, namely putting the newly sawed artificial forest plate into an anticorrosion device, and setting the drug loading rate to be 3.2Kg/m3And (3) vacuumizing the plate until the vacuum degree is-0.08 Mpa, maintaining the vacuum degree for 20min, soaking boric acid, discharging after the drug loading is achieved, and air-drying to obtain the anticorrosive wet plate.
Example 8
Example 8 differs from example 1 in that:
step 1) anticorrosion, namely putting the newly sawed artificial forest plate into an anticorrosion device, and setting the drug loading rate to be 2.5Kg/m3The plate is prepared by vacuumizing to-0.08 MPa, maintaining for 20min, pressurizing to 0.95MPa, maintaining for 60min, soaking in boric acid until the drug loading is reached, discharging, and air drying.
Comparative example 1
Comparative example 1 differs from example 1 in that:
and 2) drying the anticorrosive wet plate prepared in the step 1) at a low temperature until the water content is 12%, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 12h, then placing the plate in a carbonization device, heating the plate to 130 ℃ by adopting superheated steam at the speed of increasing the temperature by 5 ℃ per hour for heat preservation for 1 h, heating the plate to 155 ℃ at the speed of increasing the temperature by 8 ℃ per hour, then preserving the heat for 1 h, cooling the plate at the speed of reducing the temperature by 8 ℃ per hour, discharging the plate when the temperature in the device is reduced to 45 ℃, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 16h, and obtaining the carbonized plate.
Comparative example 2
A preparation method of a solid wood surface layer plate comprises the following steps:
1) drying and carbonizing: drying the artificial forest plate at low temperature until the water content is 12%, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 12 hours, then placing the plate in a carbonization device, heating the plate to 130 ℃ by adopting superheated steam at the speed of increasing the temperature by 5 ℃ per hour, preserving the heat for 1 hour, heating the plate to 205 ℃ at the speed of increasing the temperature by 8 ℃ per hour, preserving the heat for 1 hour, cooling and cooling at the speed of reducing the temperature by 8 ℃ per hour, discharging when the temperature in the device is reduced to 45 ℃, placing the plate in an environment with the temperature of 25 +/-2 ℃ and the humidity of 60-80% for processing for 16 hours, and obtaining a carbonized plate;
2) fine cutting and polishing: removing defects of the carbonized sheet prepared in the step 1), finely cutting the carbonized sheet into a sheet bar with the length of 625mm, and performing four-side polishing, wherein the width of the polished sheet bar is 90mm, and the thickness of the polished sheet bar is 52mm, so as to obtain a small sheet bar;
3) lengthening and splicing width: after the end part of the small lath prepared in the step 2) is pressed and lengthened by coating adhesive (polyvinyl acetate emulsion adhesive) at a flat opening, four sides are polished to prepare a long lath with the specification length of 2500mm, the width of 85mm and the thickness of 50.5 mm; coating adhesives (polyvinyl acetate emulsion adhesives and isocyanate adhesives) along the width direction of the long lath, pressing and widening the long lath, and sanding the long lath into a large plate with the length of 2500mm, the width of 245mm and the thickness of 50mm, wherein the mass ratio of the polyvinyl acetate emulsion adhesives to the isocyanate adhesives in the adhesive coated along the width direction is 5: 1;
4) subdividing: longitudinally cutting the large plate prepared in the step 3) by using a frame saw, uniformly cutting the thickness of the large plate into a thin plate with the thickness of 4mm, sanding, and cutting edges to prepare the wide-spliced solid wood surface layer plate with the specification length of 2480mm, the width of 240mm and the thickness of 3.8 mm.
Comparative example 3
Comparative example 3 example 1 differs in that:
in the step 2), the carbonization treatment is to adopt superheated steam to increase the speed of 5 ℃ per hour, heat the material to 220 ℃ and then preserve the heat for 1 hour.
Test examples Performance test
The solid wood surface layer plates prepared in the examples 1-2 and 4-8 and the comparative examples 1-3 are used for detecting the dimensional stability, the corrosion resistance, the mildew resistance and the termite resistance, the detection method is as follows, and the detection results are shown in the table 4:
the dimensional stability detection method comprises the following steps: referring to GB/T1934.2-2009 Wood swelling capacity determination method, the volume swelling rate is expressed;
the corrosion resistance detection method comprises the following steps: reference is made to GB/T13942.1-2009 section 1 of durability Performance of Wood: natural corrosion resistance laboratory test methods ";
TABLE 1 evaluation criteria for natural decay resistance of wood
| Grade | Sample mass loss rate |
| I (Strong corrosion resistant) | 0～10％ |
| II (rot-proof) | 11～24％ |
| III (slight corrosion resistant) | 25～44％ |
| IV (non-corrosive) | >45％ |
The anti-mildew detection method comprises the following steps: the test bacteria culture, sample inoculation and culture refer to GB/T18261-;
TABLE 2 grading of the infection values of the samples by the mould and chromobacterium surface
| Infection value | Area of sample infection |
| 0 | No hypha and mildew on the surface of the |
| 1 | Infected area of sample surface<1/4 |
| 2 | The infection area on the surface of the sample is 1/4-1/2 |
| 3 | The infection area on the surface of the sample is 1/2-3/4 |
| 4 | Infected area of sample surface>1/4 |
The termite-proof performance detection method comprises the following steps: referring to GB/T18260-2015 laboratory test method for toxicity of wood preservatives to termites, the specific detection method is as follows:
(1) and (3) preparing the solid wood surface layer plate into a sample of 25mm multiplied by 6mm, drying and weighing.
(2) 150g of river sand and vermiculite mixed matrix (the mass ratio of river sand to vermiculite is 9: 1) obtained after drying and 5-10 g of ant nest material are placed in a culture flask after cleaning and drying, 25-30 mL of distilled water is slowly added along the wall of the flask by a glass rod after the surface of the matrix is lightly smoothed by small wood chips, and the sample is placed after standing for 2 hours.
(3) Placing about 500 termites on the opposite side of the sample in a culture bottle, wherein the number of soldier ants is not more than 10%, the number of young ants and the number of young ants is not more than 5%, covering the bottle, placing the bottle in an environment with the temperature of 28 +/-2 ℃ and the relative humidity of 85 +/-5% without sunlight intervention, culturing for 4 weeks, taking out the sample, brushing river sand with a small brush, brushing the sample with distilled water, and observing the condition that the sample is damaged by the termites.
TABLE 3 grade of sample after being damaged by moth
TABLE 4 Performance test results
| Group of | Volume wet swelling rate/%) | Sample integrity rating | Corrosion resistance grade | Infection value |
| Example 1 | 0.94 | 10 | Ⅰ | 0 |
| Example 2 | 1.24 | 9.5 | Ⅱ | 1 |
| Example 4 | 1.20 | 10 | Ⅱ | 1 |
| Example 5 | 0.92 | 9.5 | Ⅰ | 1 |
| Example 6 | 0.82 | 9 | Ⅰ | 0 |
| Example 7 | 1.00 | 9 | Ⅰ | 0 |
| Example 8 | 1.04 | 9 | Ⅱ | 1 |
| Comparative example 1 | 4.22 | 8 | Ⅱ | 2 |
| Comparative example 2 | 1.12 | 4 | Ⅲ | 3 |
| Comparative example 3 | 0.78 | 9 | Ⅰ | 1 |
The experimental results show that the invention has excellent dimensional stability, corrosion resistance, mildew resistance and termite resistance. When the carbonization temperature is lower in the comparative example 1, the carbonization modification effect is poor, and the prepared solid wood surface layer plate is high in volume wet expansion rate, low in corrosion resistance grade, large in infection value, light in color and not prominent in decoration effect; comparative example 2 no anticorrosion treatment is carried out, and the obtained solid wood surface layer board has poor anticorrosion and termite-proof performance; the carbonization temperature of the comparative example 3 is too high, and the prepared solid wood surface layer board has the advantages of low density, high brittleness, black color and poor decorative effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The preparation method of the solid wood surface layer plate for decoration is characterized by comprising the following steps:
1) and (3) corrosion prevention: putting the newly sawed artificial forest plate into an anti-corrosion device, setting the boron drug loading capacity, impregnating a boron anti-corrosion medicament through vacuum pressure, discharging after the drug loading capacity is reached, and air-drying to obtain an anti-corrosion wet plate;
2) drying and carbonizing: drying the anticorrosive wet plate prepared in the step 1) until the water content is 10-30%, discharging, and balancing for later use; putting the balanced plate into a carbonization device, heating to 160-215 ℃, preserving heat for 0-6 h, carrying out carbonization treatment, cooling, discharging and balancing to obtain a carbonized plate;
3) fine cutting and polishing: removing defects of the carbonized sheet material prepared in the step 2), finely cutting, and planing four sides to obtain small strips;
4) lengthening and widening: coating an adhesive on the end part of the small plate strip prepared in the step 3) for lengthening, and then performing four-side polishing to prepare a long plate strip; coating adhesive along the side surface of the long lath, and widening to obtain a large plate;
5) subdividing: and (4) dividing the large plate manufactured in the step 4) into thin plates with the specified thickness along the thickness direction, sanding and finely cutting to manufacture the solid wood surface layer plate.
2. The method for preparing a decorative solid wood facing sheet according to claim 1, wherein the artificial forest sheet is any one of rubber tree wood, eucalyptus wood, birch wood, poplar wood and acacia wood.
3. The method for preparing the decorative solid wood surface layer plate as claimed in claim 1, wherein in the step 1), the boron-based anticorrosive agent is at least one of boric acid, sodium tetraborate and sodium octaborate.
4. The method for preparing a decorative solid wood surface layer plate as claimed in claim 1, wherein in the step 1), the vacuum pressure impregnation is performed by firstly vacuumizing to a vacuum degree of-0.06 to-0.1 Mpa, keeping for 15 to 30min, and then pressurizing to a vacuum degree of 0.8 to 1.5Mpa, and keeping for 45 to 90 min.
5. The preparation method of the decorative solid wood surface layer board as claimed in claim 1, wherein in the step 1), the boron loading capacity is set to be 2.8-4.5 Kg/m3A plate material.
6. The preparation method of the decorative solid wood surface layer board as claimed in claim 1, wherein in the step 2), the drying is performed until the water content is 10-12%.
7. The preparation method of the decorative solid wood surface layer board as claimed in claim 1, wherein in the step 2), the carbonization treatment is heating to 130 ℃ by using superheated steam at a speed of increasing 3-6 ℃ per hour, and keeping the temperature for 1-3 h, and then heating to 180-215 ℃ at a speed of increasing 6-10 ℃ per hour, and keeping the temperature for 0-2 h.
8. The method for preparing the decorative solid wood surface layer board as claimed in claim 1, wherein in the step 2), the temperature is reduced to 30-45 ℃ at a speed of 6-8 ℃ per hour.
9. The method for preparing a decorative solid wood facing sheet according to claim 1, wherein the extension is performed by applying pressure to the end of the small plate strip by means of coating adhesive on a flat opening or coating adhesive on a finger tenon; the width splicing is realized by coating adhesive along the width or thickness direction of the long lath and pressing.
10. The method for preparing a decorative solid wood surface course plate as claimed in claim 1 or 9, wherein the adhesive is at least one of vinyl acetate emulsion, isocyanate, urea formaldehyde, phenolic resin and melamine formaldehyde glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638070.1A CN112847705A (en) | 2020-12-31 | 2020-12-31 | Preparation method of decorative solid wood surface layer plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638070.1A CN112847705A (en) | 2020-12-31 | 2020-12-31 | Preparation method of decorative solid wood surface layer plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112847705A true CN112847705A (en) | 2021-05-28 |
Family
ID=76000408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011638070.1A Pending CN112847705A (en) | 2020-12-31 | 2020-12-31 | Preparation method of decorative solid wood surface layer plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112847705A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114055587A (en) * | 2021-11-01 | 2022-02-18 | 中南林业科技大学 | Large-scale bamboo integrated engineering material and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468479A (en) * | 2007-12-28 | 2009-07-01 | 广东省林业科学研究院 | Boronic compound high-temperature heat-treatment method for lumber |
| CN101716790A (en) * | 2009-12-16 | 2010-06-02 | 中国热带农业科学院橡胶研究所 | Method for producing rubber tree carbonized wood by resin pretreatment |
| WO2011075959A1 (en) * | 2009-12-26 | 2011-06-30 | 浙江世友木业有限公司 | Solid wood section with reinforced surface and preparation method thereof |
| CN203947726U (en) * | 2014-01-26 | 2014-11-19 | 中国热带农业科学院橡胶研究所 | The integrated sheet material of a kind of termite-proof charing undersized log |
| CN105382902A (en) * | 2015-11-20 | 2016-03-09 | 桂林融通科技有限公司 | Novel wood impregnation and carbonization treatment method |
-
2020
- 2020-12-31 CN CN202011638070.1A patent/CN112847705A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468479A (en) * | 2007-12-28 | 2009-07-01 | 广东省林业科学研究院 | Boronic compound high-temperature heat-treatment method for lumber |
| CN101716790A (en) * | 2009-12-16 | 2010-06-02 | 中国热带农业科学院橡胶研究所 | Method for producing rubber tree carbonized wood by resin pretreatment |
| WO2011075959A1 (en) * | 2009-12-26 | 2011-06-30 | 浙江世友木业有限公司 | Solid wood section with reinforced surface and preparation method thereof |
| CN203947726U (en) * | 2014-01-26 | 2014-11-19 | 中国热带农业科学院橡胶研究所 | The integrated sheet material of a kind of termite-proof charing undersized log |
| CN105382902A (en) * | 2015-11-20 | 2016-03-09 | 桂林融通科技有限公司 | Novel wood impregnation and carbonization treatment method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114055587A (en) * | 2021-11-01 | 2022-02-18 | 中南林业科技大学 | Large-scale bamboo integrated engineering material and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5467112B2 (en) | A kind of wood mold and its manufacturing method | |
| CN101716790B (en) | Method for producing rubber tree carbonized wood by resin pretreatment | |
| CN102555005B (en) | Flame-retardant solid wood section, flame-retardant solid wood floor and production method of flame-retardant solid wood section | |
| JP5775825B2 (en) | Surface-reinforced natural wood mold material and method for producing the same | |
| CN103072165B (en) | Production method of high-temperature heating modified rubber wood floor | |
| CN102626941A (en) | Fast-growing wood surface reinforcing manufacturing method and sections manufactured thereby | |
| CN109591122B (en) | Method for vacuum compression and densification of wood material | |
| CN105856367B (en) | Bamboo flattening method in high-temperature tank | |
| CN108908646B (en) | High-strength bamboo wood and oriented strand board composite board and preparation method thereof | |
| CN103240782A (en) | Nanometer inorganic carbonized wood preparation method, nanometer inorganic carbonized wood products and application of nanometer inorganic carbonized wood | |
| CN112847705A (en) | Preparation method of decorative solid wood surface layer plate | |
| CN112223462B (en) | Treatment method for preventing wood from cracking through penetration and solidification | |
| CN106335119A (en) | Method for producing window frame moulding with eucalyptus cores as raw materials | |
| CN1644336A (en) | Soft material single-board materials and wooden products with surface hardness improve | |
| CN111805646A (en) | Pine recombination wood manufacturing process | |
| CN108058254B (en) | A kind of method of poplar anoxic heat treatment impregnated melamine urea-formaldehyde resin enhancing processing | |
| CN1814420A (en) | Thermosetting resin high-pressure anti-wear wood laminated plate and its manufacturing method | |
| CN102303336B (en) | A kind of fast growing wood flame-retardant reinforced wood veneer and production method thereof | |
| CN114474263A (en) | Preparation method of environment-friendly plywood | |
| CN107053372A (en) | A kind of carbonization is without aldehyde multi-layer solid wood composite floor substrate and preparation method thereof | |
| CN110666901B (en) | Environment-friendly moisture-proof wood board and preparation method and application thereof | |
| CN111086068A (en) | Preparation method of high-strength anticorrosive plywood | |
| CN106272837A (en) | The method being raw material production wardrobe moulding with Eucalyptus core | |
| CN2597180Y (en) | Wood bamboo composite floor | |
| CN105082292B (en) | A kind of production technology of modified high-strength degree rubber timber floor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |
|
| RJ01 | Rejection of invention patent application after publication |