CN114055591A - Preparation method of bamboo-wood particle board - Google Patents
Preparation method of bamboo-wood particle board Download PDFInfo
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- CN114055591A CN114055591A CN202111382538.XA CN202111382538A CN114055591A CN 114055591 A CN114055591 A CN 114055591A CN 202111382538 A CN202111382538 A CN 202111382538A CN 114055591 A CN114055591 A CN 114055591A
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- bamboo
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- particle board
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- 239000002245 particle Substances 0.000 title claims abstract description 77
- 239000002023 wood Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 98
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 98
- 241001330002 Bambuseae Species 0.000 claims abstract description 98
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 98
- 239000011425 bamboo Substances 0.000 claims abstract description 98
- 239000002699 waste material Substances 0.000 claims abstract description 83
- 239000000463 material Substances 0.000 claims abstract description 62
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000007731 hot pressing Methods 0.000 claims abstract description 13
- 238000005470 impregnation Methods 0.000 claims description 21
- 238000004513 sizing Methods 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 11
- 229920000877 Melamine resin Polymers 0.000 claims description 10
- -1 melamine modified urea-formaldehyde resin Chemical class 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 238000010000 carbonizing Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 claims description 3
- 229910000020 calcium bicarbonate Inorganic materials 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 12
- 239000012634 fragment Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- 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
- 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
- B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/06—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood powder or sawdust
-
- 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
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/007—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and at least partly composed of recycled material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
Abstract
The invention relates to a preparation method of a bamboo-wood particle board, which is characterized in that bamboo wastes generated in the processing process of a bamboo product processing enterprise are used as raw materials, the bamboo wastes are distinguished to respectively obtain waste boards, waste bamboo branches and waste particles, the obtained waste boards, waste bamboo branches and waste particles are respectively treated to respectively obtain fine fragments, carbonized bamboo particles and bamboo powder, then the fine fragments and wood shavings are mixed to obtain a first mixture, the carbonized bamboo particles and the bamboo powder are mixed in proportion to obtain a second mixture, the first mixture and the second mixture are sequentially layered, hot-pressing molding is carried out after the layering is finished, a veneer layer is attached after the molding, and the bamboo-wood particle board is obtained after the standing is carried out for 5-7 days. The bamboo-wood decorative plate is integrally formed by solid wood and bamboo materials, has better strength and structural stability, and can be used as a substitute of a wood particle plate.
Description
Technical Field
The invention relates to the technical field of plates in the field of building materials, in particular to a preparation method of a bamboo-wood particle plate.
Background
The particle board is taken as common decoration material in the present year, and is mainly prepared by crushing wood leftover materials or waste materials in the wood processing process into particles, and then carrying out procedures of glue mixing, high pressure and the like.
The bamboo wood as a fast-growing wood has the advantages of low cost and easily obtained raw materials, is widely applied to daily production and life of people, and one of the main applications is a building decoration material. The existing bamboo boards in the market are mainly pure bamboo chip plywood, bamboo is used as a main raw material during preparation, and the bamboo boards are flattened and glued after being subjected to pretreatment such as enzyme deactivation, grinding, chip splitting, alkali boiling and the like, are subjected to hot pressing after being glued and are dried for forming.
However, the consumption of the bamboo raw materials is large in the processing mode, the bamboo raw materials are all bamboo generally, the raw materials are single, the utilization rate of the raw materials is low, the raw material supply is easy to be tense, in addition, a large amount of waste materials such as bamboo branches, bamboo processing residual crushed aggregates, bamboo chips, fragments and residual materials can be generated by utilizing the processing mode, and the bamboo waste materials have the characteristics of good filling property, uniform expansibility, good sound insulation and heat insulation and the like, but the utilization rate is low in the actual recycling process, and the recycling value is not high; the bamboo waste is treated and then crushed, the crushed bamboo particles are used as main raw materials to replace wood particles, and the wood particles are mixed with sizing materials and then prepared into the board by the traditional wood particle board preparation process.
If the waste materials in the bamboo processing process are used as raw materials, the bamboo-wood particle board with better physical strength and structural stability can be prepared, the utilization rate of the bamboo processing waste materials can be effectively improved, and the bamboo-wood particle board has better economic value and social value.
Disclosure of Invention
The invention aims to provide a preparation method of a bamboo-wood particle board, which can be used for solving the defects in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a preparation method of bamboo-wood particle boards utilizes bamboo waste materials generated in the processing process of bamboo product processing enterprises as raw materials, the bamboo waste materials are mixed with broken materials made of different materials after being processed, and pre-prepared adhesives are utilized to be filled to obtain the bamboo-wood particle boards with better strength and structural stability, and the specific preparation method comprises the following operation steps:
s1, distinguishing the bamboo waste to obtain waste plates, waste bamboo branches and waste particles respectively, cleaning the obtained waste plates, waste bamboo branches and waste particles, drying, and treating respectively:
removing green and yellow of the waste plate, drying until the water content is lower than 10%, then planing the waste plate into thin sheet materials with the thickness of 0.8-1.2 mm, performing pressure impregnation by using melamine modified urea-formaldehyde resin glue, hardening to obtain the impregnated and modified thin sheet materials, and finely cutting the impregnated and modified thin sheet materials to obtain fine thin sheet materials;
directly carbonizing the waste bamboo branches after removing bamboo leaves to obtain carbonized bamboo branches, and crushing the carbonized bamboo branches to obtain carbonized bamboo particles with the particle size of 1-3 cm;
drying the waste granular materials until the water content is lower than 8%, and grinding to obtain the bamboo powder material with the particle size of 0.3-0.8 mm.
S2, mixing 100 parts by mass of phenolic resin, 5-8 parts by mass of heavy calcium carbonate powder, 3-5 parts by mass of magnesium oxide powder and 1-3 parts by mass of titanium dioxide, and uniformly dispersing to obtain the sizing material.
S3, planing and grinding the raw wood to prepare wood flakes with uniform size, mixing the wood flakes and the fine flakes according to the mass ratio of 1: 1-1: 3, adding a sizing material, and controlling the glue application amount to be 18-22% of the mixture to obtain a first mixture;
and mixing the carbonized bamboo particle material and the bamboo powder material according to the mass ratio of 3:1, adding a sizing material, and controlling the sizing amount to be 12-15% of the mixture to obtain a second mixture.
And S4, sequentially layering the first mixture and the second mixture, hot-pressing and forming after layering, attaching a veneering layer after forming, and standing for 5-7 days to obtain the finished bamboo-wood particle board.
And by way of further limitation, when the waste plate is subjected to the pressure impregnation treatment of the melamine modified urea-formaldehyde resin adhesive in the step S1, the mass ratio of the waste plate to the resin adhesive is controlled to be 100: 30-100: 35, the pressure of the pressure is 1.0-1.3 MPa, and the time of the pressure impregnation treatment is 15-25 min.
As a further limitation, the finely cut pieces obtained in step S1 and the wood flakes obtained in step S3 have a length of 30 to 50mm and a width of 3 to 15 mm; and the thickness of the wood shaving sheet is 0.5-0.8 mm.
As a further limitation, the calcium bicarbonate powder, the magnesium oxide powder and the titanium dioxide powder adopted in the step S2 are sieved by a sieve of 200-300 meshes.
The rubber material is further limited to be added with 5-7 parts by mass of chopped glass fibers.
By way of further limitation, when the first mixed material layer is paved in the step S4, the paving standard is 300-450 g/m2(ii) a And the first mixture of different layers is paved in the same direction when the layers are paved.
By way of further limitation, when the second mixed material layer is paved in the step S4, the paving standard is 180-220 g/m2。
As a further limitation, when the hot press molding is performed in the step S4, pre-pressing is performed at a temperature of 50-80 ℃ and a pressure of 0.8-1.5 MPa, wherein the pre-pressing time is 30-50S, then the temperature is increased to 90-120 ℃, the pressure is increased to 3-5 MPa, and the hot press time is 5-15 min.
Has the advantages that: the preparation method of the bamboo-wood particle board disclosed by the invention can utilize bamboo product wastes of different types, has a high utilization rate of the bamboo product wastes, modifies the bamboo product wastes of different types according to the material characteristics and the structural characteristics, and presses the modified bamboo product wastes as raw materials into the bamboo-wood particle board, and the prepared bamboo-wood particle board has low manufacturing cost which is only 10-30% of that of a solid wood board and 60-70% of that of the wood particle board, has the advantages of good size stability, high strength and high toughness, can be matched with different veneering layers to externally present different veneer effects, and can replace the traditional particle board to be applied to the field of home decoration.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the technical solutions required to be used in the description of the embodiments will be briefly described below.
It is obvious that the technical contents in the following description are only some embodiments of the present invention, and it is obvious for a person skilled in the art that other derivative technical solutions can be obtained according to the technical contents without creative efforts, and the technical solutions also belong to the protection scope of the present invention. In the following examples, it will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
The first embodiment is as follows:
in the first embodiment, the bamboo-wood particle board is prepared by the following steps:
the method comprises the following steps of firstly distinguishing bamboo wastes to obtain waste plates, waste bamboo branches and waste granules, cleaning and drying the obtained waste plates, waste bamboo branches and waste granules, and respectively treating:
removing green and yellow of the waste sheet, drying until the water content is lower than 10%, then planing the waste sheet into sheet pieces with the thickness of 0.8-1.0 mm, carrying out pressure impregnation on the sheet pieces in a container according to the proportion of 30kg of melamine modified urea-formaldehyde resin to 100kg of the sheet pieces, controlling the impregnation pressure to be 1.0MPa during impregnation, carrying out impregnation treatment for 18min, hardening the melamine modified urea-formaldehyde resin after the impregnation is finished, and then cutting the sheet pieces to obtain fine crushed sheet pieces with the length of 30-35 mm and the width of 3-7 mm.
Removing bamboo leaves from the waste bamboo branches, directly carbonizing to obtain carbonized bamboo branches, and crushing the carbonized bamboo branches to obtain carbonized bamboo particles with the particle size of 1-1.5 cm.
Drying the waste granular materials until the water content is lower than 8%, and grinding to obtain the bamboo powder material with the particle size of 0.3-0.5 mm.
The three steps of treating the waste plate materials, the waste bamboo branches and the waste particle materials are not in sequence, and can be carried out simultaneously.
Then respectively weighing 5 parts by mass of calcium bicarbonate powder which is sieved by a 200-mesh sieve, 3 parts by mass of magnesium oxide powder which is sieved by a 200-mesh sieve, 1 part by mass of titanium dioxide which is sieved by a 200-mesh sieve and 100 parts by mass of phenolic resin, adding the mixture into a dispersion kettle, and uniformly dispersing to obtain the sizing material.
The method comprises the following steps of (1) grinding raw wood into wood flakes with uniform size, controlling the length of a wood planer to be 30-35 mm, the width to be 3-5 mm and the thickness to be 0.5-0.7 mm, mixing the wood flakes and fine flakes according to the mass ratio of 1:3, adding a sizing material, and controlling the glue application amount to be 18% of the mass of a mixture of the wood flakes and the fine flakes to obtain a first mixture; and simultaneously mixing the carbonized bamboo particle material and the bamboo powder material according to the mass ratio of 3:1 in parts by mass, adding a sizing material, and controlling the sizing amount to be 15% of the mixture to obtain a second mixture.
Finally, the first mixture is mixed according to the proportion of 300g/m2Is laid in a mould, and then the surface of the first mixed material layer is coated according to the proportion of 180g/m2A layer of second mixture is paved in the mould in a flat way; then sequentially circulating and controlling the first mixture of different layers to be paved in the same direction during layer paving until the material in the die reaches the required thickness, and then carrying out hot pressing at the temperature of 80 ℃ during hot pressingPrepressing under the condition of pressure of 0.8MPa for 50S, then heating to 90 ℃, pressurizing to 5MPa for hot pressing for 6min, pasting surface paper on the outer edge and the two side surfaces of the formed plate as veneering layers after forming, placing the veneering layers in a ventilation and drying place, and standing for 5 days to obtain a finished product bamboo wood particle plate with the thickness of 2.7 cm.
The finished bamboo and wood particle board manufactured by the method is cut into a board body with the length of 2m and the width of 1m, the bearing weight of the middle of the board body is 335kg, and in two commercially available wood particle boards with the same size, the bearing weight of one wood particle board is 345kg, the bearing weight of the other wood particle board is 337kg, the bearing performance of the wood particle board is close to that of the two commercially available wood particle boards, and the deviation of the dimensional stability, the nail holding force and the saw cutting processing performance and those of the two commercially available wood particle boards is within 10%; the formaldehyde emission is 0.085mg/m3Less than 0.124mg/m3The standard of (2).
Example two:
in example two, a bamboo wood particle board was prepared by:
the method comprises the following steps of firstly distinguishing bamboo wastes to obtain waste plates, waste bamboo branches and waste granules, cleaning and drying the obtained waste plates, waste bamboo branches and waste granules, and respectively treating:
removing green and yellow of the waste sheet, drying until the water content is lower than 10%, then planing the waste sheet into sheet pieces with the thickness of 1.0-1.2 mm, carrying out pressure impregnation on the sheet pieces in a container according to the proportion that 35kg of melamine modified urea-formaldehyde resin is mixed with 100kg of the sheet pieces, controlling the impregnation pressure to be 1.2MPa during impregnation, carrying out impregnation treatment for 25min, hardening the melamine modified urea-formaldehyde resin after the impregnation is finished, and then cutting the sheet pieces to obtain fine crushed sheet pieces with the length of 40-50 mm and the width of 12-15 mm.
Removing bamboo leaves from the waste bamboo branches, directly carbonizing to obtain carbonized bamboo branches, and crushing the carbonized bamboo branches to obtain carbonized bamboo particles with the particle size of 2.5-3.0 cm.
Drying the waste granular materials until the water content is lower than 8%, and grinding to obtain the bamboo powder material with the particle size of 0.6-0.8 mm.
Then respectively weighing 8 parts by mass of heavy calcium carbonate powder passing through a 250-mesh sieve, 5 parts by mass of magnesium oxide powder passing through a 250-mesh sieve, 3 parts by mass of titanium dioxide powder passing through a 250-mesh sieve, 100 parts by mass of phenolic resin and 7 parts by mass of chopped glass fiber, adding into a dispersion kettle, and uniformly dispersing to obtain the sizing material.
The method comprises the following steps of (1) grinding raw wood into wood shavings with uniform size, controlling the length of a wood plane to be 45-50 mm, the width to be 12-15 mm and the thickness to be 0.7-0.8 mm, mixing the wood shavings and fine crushed chips according to the mass ratio of 1:1, adding a sizing material, and controlling the glue application amount to be 22% of the mass of a mixture of the wood shavings and the fine crushed chips to obtain a first mixture; and simultaneously mixing the carbonized bamboo particle material and the bamboo powder material according to the mass ratio of 3:1 in parts by mass, adding a sizing material, and controlling the sizing amount to be 14% of the mixture to obtain a second mixture.
Finally, the first mixture is mixed according to 450g/m2Is laid in a mould, and then the surface of the first mixed material layer is 220g/m2A layer of second mixture is paved in the mould in a flat way; and then sequentially circulating and controlling the first mixture of different layers to be paved in the same direction during layer paving until the material in the die reaches the required thickness, and then carrying out hot pressing, wherein during hot pressing, prepressing is carried out at the temperature of 60 ℃ and under the pressure of 1.2MPa for 30S, then heating to 110 ℃, pressurizing to 3.5MPa for hot pressing for 12min, after forming, surface paper is pasted on the outer edge and the surfaces on the two sides of the formed plate as veneering layers, and the veneering layer is placed in a ventilation and drying place for standing for 6 days to obtain a finished product bamboo wood particle plate with the thickness of 2.7 cm.
Cutting the finished bamboo and wood particle board prepared by the method into a board body with the length of 2m and the width of 1m, wherein the bearing weight in the middle of the board body is 339 kg; the formaldehyde emission is 0.095mg/m3Less than 0.124mg/m3The standard of (2).
Example three:
in example three, a bamboo wood particle board was prepared by:
the method comprises the following steps of firstly distinguishing bamboo wastes to obtain waste plates, waste bamboo branches and waste granules, cleaning and drying the obtained waste plates, waste bamboo branches and waste granules, and respectively treating:
removing green and yellow of the waste sheet, drying until the water content is lower than 10%, then planing the waste sheet into sheet pieces with the thickness of 0.8-0.9 mm, carrying out pressure impregnation on the sheet pieces in a container according to the proportion of 32kg of melamine modified urea-formaldehyde resin to 100kg of the sheet pieces, controlling the impregnation pressure to be 1.3MPa during impregnation, carrying out impregnation treatment for 25min, hardening the melamine modified urea-formaldehyde resin after the impregnation is finished, and then cutting the sheet pieces to obtain fine crushed sheet pieces with the length of 35-45 mm and the width of 10-12 mm.
Removing bamboo leaves from the waste bamboo branches, directly carbonizing to obtain carbonized bamboo branches, and crushing the carbonized bamboo branches to obtain carbonized bamboo particles with the particle size of 1.5-2.5 cm.
Drying the waste granular materials until the water content is lower than 8%, and grinding to obtain the bamboo powder material with the particle size of 0.5-0.6 mm.
Then respectively weighing 7 parts by mass of heavy calcium carbonate powder which is sieved by a 300-mesh sieve, 4 parts by mass of magnesium oxide powder which is sieved by a 300-mesh sieve, 2 parts by mass of titanium dioxide which is sieved by a 300-mesh sieve, 100 parts by mass of phenolic resin and 6 parts by mass of chopped glass fiber, adding the mixture into a dispersion kettle, and uniformly dispersing to obtain the sizing material.
The method comprises the following steps of (1) grinding raw wood into wood shavings with uniform size, controlling the length of a wood plane to be 40-45 mm, the width to be 8-10 mm and the thickness to be 0.6-0.7 mm, mixing the wood shavings and fine crushed chips according to the mass ratio of 1:2, adding a sizing material, and controlling the glue application amount to be 20% of the mass of a mixture of the wood shavings and the fine crushed chips to obtain a first mixture; and simultaneously mixing the carbonized bamboo particle material and the bamboo powder material according to the mass ratio of 3:1 in parts by mass, adding a sizing material, and controlling the glue application amount to be 13% of the mixture to obtain a second mixture.
Finally, the first mixture is 400g/m2Is laid in a mould, and then the surface of the first mixed material layer is 200g/m2A layer of second mixture is paved in the mould in a flat way; then in sequenceAnd circulating and controlling the first mixture of different layers to be paved in the same direction during layer paving until the material in the die reaches the required thickness, performing hot pressing, performing pre-pressing at the temperature of 60 ℃ and under the pressure of 1.2MPa for 50S during hot pressing, heating to 110 ℃, pressurizing to 4MPa for hot pressing for 12min, pasting surface paper as veneering layers on the outer edge and the surfaces on two sides of the formed plate after forming, and standing for 7 days in a ventilation and drying place to obtain a finished product bamboo wood particle plate with the thickness of 2.7 cm.
Cutting the finished bamboo and wood particle board prepared by the method into a board body with the length of 2m and the width of 1m, wherein the bearing weight in the middle of the board body is 342 kg; the formaldehyde emission is 0.083mg/m3Less than 0.124mg/m3The standard of (2).
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The preparation method of the bamboo-wood particle board is characterized by comprising the following operation steps:
s1, distinguishing the bamboo waste to obtain waste plates, waste bamboo branches and waste particles respectively, cleaning the obtained waste plates, waste bamboo branches and waste particles, drying, and treating respectively:
removing green and yellow of the waste plate, drying until the water content is lower than 10%, then planing the waste plate into thin sheet materials with the thickness of 0.8-1.2 mm, performing pressure impregnation by using melamine modified urea-formaldehyde resin glue, hardening to obtain the impregnated and modified thin sheet materials, and finely cutting the impregnated and modified thin sheet materials to obtain fine thin sheet materials;
directly carbonizing the waste bamboo branches after removing bamboo leaves to obtain carbonized bamboo branches, and crushing the carbonized bamboo branches to obtain carbonized bamboo particles with the particle size of 1-3 cm;
drying the waste granular materials until the water content is lower than 8%, and grinding the dried waste granular materials into powder to obtain bamboo powder materials with the particle size of 0.3-0.8 mm;
s2, mixing 100 parts by mass of phenolic resin, 5-8 parts by mass of heavy calcium carbonate powder, 3-5 parts by mass of magnesium oxide powder and 1-3 parts by mass of titanium dioxide, and uniformly dispersing to obtain a sizing material;
s3, planing and grinding the raw wood to prepare wood flakes with uniform size, mixing the wood flakes and the fine flakes according to the mass ratio of 1: 1-1: 3, adding a sizing material, and controlling the glue application amount to be 18-22% of the mixture to obtain a first mixture;
mixing the carbonized bamboo particle material and the bamboo powder material according to the mass ratio of 3:1 in parts by mass, adding a sizing material, and controlling the sizing amount to be 12-15% of the mixture to obtain a second mixture;
and S4, sequentially layering the first mixture and the second mixture, hot-pressing and forming after layering, attaching a veneering layer after forming, and standing for 5-7 days to obtain the finished bamboo-wood particle board.
2. The preparation method of the bamboo-wood particle board as claimed in claim 1, wherein the mass ratio of the waste board material to the resin glue material is controlled to be 100: 30-100: 35 when the waste board material is subjected to the pressure impregnation treatment of the melamine modified urea-formaldehyde resin glue in step S1, the pressure of the pressure is 1.0-1.3 MPa, and the time of the pressure impregnation treatment is 15-25 min.
3. The method for preparing bamboo-wood particle board according to claim 1, wherein the length of the finely-divided pieces obtained by the fine-cutting in step S1 is 30-50 mm, and the width thereof is 3-15 mm.
4. The method for preparing bamboo-wood particle board as claimed in claim 1, wherein the wood flakes obtained in step S3 have a length of 30 to 50mm, a width of 3 to 15mm and a thickness of 0.5 to 0.8 mm.
5. The preparation method of the bamboo wood particle board as claimed in claim 1, wherein the calcium bicarbonate powder, the magnesium oxide powder and the titanium dioxide powder adopted in the step S2 are all sieved by a sieve of 200-300 meshes.
6. The preparation method of the bamboo-wood particle board as claimed in claim 1, wherein 5-7 parts by mass of chopped glass fiber is added into the sizing material.
7. The method for preparing bamboo-wood particle board according to claim 1, wherein when the first mixture layer is paved in step S4, the paving standard is 300-450 g/m2(ii) a And the first mixture of different layers is paved in the same direction when the layers are paved.
8. The method for preparing bamboo-wood particle board according to claim 1, wherein when the second mixture layer is spread in step S4, the spreading standard is 180-220 g/m2。
9. The preparation method of the bamboo-wood particle board as claimed in claim 1, wherein the hot press forming in step S4 is performed by pre-pressing at 50-80 ℃ and 0.8-1.5 MPa for 30-50S, heating to 90-120 ℃, pressurizing to 3-5 MPa, and hot pressing for 5-15 min.
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| CN114800751A (en) * | 2022-04-24 | 2022-07-29 | 书香门地集团股份有限公司 | Regenerated floor prepared from waste wood |
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Denomination of invention: A preparation method for bamboo and wood particle board Effective date of registration: 20231115 Granted publication date: 20220527 Pledgee: Hunan Longdexin Labor Service Co.,Ltd. Pledgor: Huaihua Dalong Agricultural Technology Co.,Ltd. Registration number: Y2023980065865 |
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