CN114888919A - Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board - Google Patents
Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board Download PDFInfo
- Publication number
- CN114888919A CN114888919A CN202210489292.4A CN202210489292A CN114888919A CN 114888919 A CN114888919 A CN 114888919A CN 202210489292 A CN202210489292 A CN 202210489292A CN 114888919 A CN114888919 A CN 114888919A
- Authority
- CN
- China
- Prior art keywords
- bamboo
- wood composite
- composite board
- wood
- drying
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 82
- 239000002023 wood Substances 0.000 title claims abstract description 65
- 239000002699 waste material Substances 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 85
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 84
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 84
- 241001330002 Bambuseae Species 0.000 claims abstract description 83
- 239000011425 bamboo Substances 0.000 claims abstract description 83
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 65
- 238000001035 drying Methods 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 41
- 238000007731 hot pressing Methods 0.000 claims abstract description 38
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 31
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 24
- 230000001070 adhesive effect Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 22
- 239000005011 phenolic resin Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 17
- 239000002025 wood fiber Substances 0.000 claims abstract description 17
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims abstract description 15
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 14
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 230000007613 environmental effect Effects 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 239000002916 wood waste Substances 0.000 claims abstract description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 11
- 238000010981 drying operation Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 244000271437 Bambusa arundinacea Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
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
- B27N1/00—Pretreatment of moulding material
-
- 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
- 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
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- 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
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/78—Recycling of wood or furniture waste
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a method for manufacturing a bamboo-wood composite board by recycling waste materials, which comprises the following steps: crushing the recycled bamboo and wood waste, and screening to obtain crushed materials; slicing bamboo green sheet, drying, soaking in calcium chloride solution, adding dodecyl dimethyl betaine, ultrasonic treating for 20-40min, draining, adding sodium carbonate solution, ultrasonic treating for 1-2 hr, filtering, and drying at 50-70 deg.C to constant weight to obtain calcium carbonate composite bamboo green sheet; uniformly mixing calcium carbonate composite bamboo green sheets, wood fibers and crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 8-10%, wherein the environmental parameters in the drying oven are 100 ℃ and the humidity is 60-70%, so as to obtain a dried material; spraying phenolic resin adhesive into the dried material, uniformly mixing, and directionally paving to obtain a precast slab; and carrying out programmed hot pressing on the prefabricated plates, and cooling to room temperature to obtain the bamboo-wood composite plate. The invention also discloses a bamboo-wood composite board.
Description
Technical Field
The invention relates to the technical field of bamboo-wood composite boards, in particular to a manufacturing method of a bamboo-wood composite board with recycled waste materials and the bamboo-wood composite board.
Background
Because forest resources in China are deficient and natural forest protection engineering carried out in recent years is accompanied, the supply and demand of wood are increasingly tense, and large-scale use of wood as engineering material is difficult to realize at present. The bamboo wood is used as a characteristic resource of China, has the characteristics of wide distribution range, short growth period, excellent mechanical property and the like, can realize one-time afforestation and continuous utilization, and becomes an optimal raw material for filling the shortage of wood resources of China.
At present, the bamboo structural materials mainly comprise bamboo curtain plywood, bamboo mat plywood, bamboo-wood composite boards, bamboo skin laminated wood, bamboo shaving boards, recombined bamboos and the like. Compared with wood, the bamboo-wood composite board has the characteristics of high strength, high rigidity, good toughness, stable size and the like, and can better meet the use requirements of engineering structural materials.
At present, the bamboo-wood composite board is made of common bamboo green sheets serving as raw materials through parallel assembly and hot-pressing gluing, has excellent, uniform and stable performance, and can be used as an engineering material to be applied to the fields of buildings, bridges, transportation, wind power blades and the like. The bamboo-wood composite board is trimmed after hot pressing to generate edge cutting materials, waste boards can be generated even if the bamboo-wood composite board does not reach the standard in the production process, and the conventional treatment method of the waste materials such as the edge cutting materials, the waste boards, the used common plywood and the like is to use the waste materials as fuel or change the waste materials into other low-value boards, so that the value is very low, the application range is limited, and the extreme waste of raw material resources is caused.
At present and in the future, when the environment is worsened day by day, forest resources are sharply reduced, and wood resource supply is more and more tense, how to efficiently utilize bamboo, edge cutting materials and waste boards, the impact strength of the bamboo-wood composite board is increased on the basis of improving the tensile and bending properties of the composite board, and the method has a good research prospect.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a method for manufacturing a bamboo-wood composite board by recycling waste materials and the bamboo-wood composite board.
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the recycled bamboo and wood waste, and screening to obtain crushed materials;
s2, slicing and drying bamboo green sheets, soaking the bamboo green sheets into a calcium chloride solution, adding dodecyl dimethyl betaine for ultrasonic treatment for 20-40min, draining, adding a sodium carbonate solution for ultrasonic treatment for 1-2h, filtering, and drying at 50-70 ℃ to constant weight to obtain calcium carbonate composite bamboo green sheets;
s3, uniformly mixing the calcium carbonate composite bamboo green sheets, the wood fibers and the crushed materials, adding the mixture into a drying oven, and drying until the water content of the system is 8-10%, wherein the environmental parameters in the drying oven are 100 ℃ and the humidity is 60-70%, so as to obtain a dried material; spraying phenolic resin adhesive into the dried material, uniformly mixing, and directionally paving to obtain a precast slab;
and S4, carrying out programmed hot pressing on the prefabricated plate, and cooling to room temperature to obtain the bamboo-wood composite plate.
Preferably, the recycled bamboo wood waste is rim charge and/or waste board generated in the production of the bamboo wood composite board
Preferably, the particles obtained from S1 have a particle size of 1-5 mm.
Preferably, in S2, the drying operation is specifically as follows: drying the sliced bamboo green slices in an oven at 70-80 deg.C for 10-30 min.
Preferably, in S2, the concentration of the calcium chloride solution is 0.5-1.5mol/L, the concentration of the sodium carbonate solution is 0.5-1.5mol/L,
preferably, in S2, the mass ratio of the bamboo green sheet to the calcium chloride solution to the dodecyl dimethyl betaine to the sodium carbonate solution is 10-20: 50-100: 1-2: 50-100.
Preferably, in S2, the filtration is followed by washing with clean water.
Preferably, in S3, the mass ratio of the calcium carbonate composite bamboo green sheets to the wood fibers to the crushed aggregates to the phenolic resin adhesive is 50-100: 15-25: 10-30: 10-30.
Preferably, in S4, the hot pressing procedure specifically operates as follows: setting the pressure to be 2-4MPa, and hot pressing at 105-115 ℃ for 5-10 min; increasing the pressure to 5-7MPa, and continuously carrying out hot pressing at the temperature of 105-; reducing the pressure to 1.5-2.5MPa, and standing for 1-2h at room temperature; increasing the pressure to 3-5MPa, and carrying out hot pressing at the temperature of 120-130 ℃ for 2-4 min.
A bamboo-wood composite board is manufactured by adopting the manufacturing method of the bamboo-wood composite board with the recycled waste materials.
The technical effects of the invention are as follows:
drying the bamboo green sheets at the temperature of 70-80 ℃, forming fine longitudinal grooves in the sliced bamboo green sheets, simultaneously discharging internal gas to form a large number of fine porous structures, soaking the bamboo green sheets into a calcium chloride solution to facilitate the penetration of an ionic solution, wherein calcium ions fully penetrate into the structures of the bamboo green sheets, then soaking the bamboo green sheets into a sodium carbonate solution, and combining the calcium ions and carbonate ions in the bamboo green sheets under the action of ultrasound to form calcium carbonate molecules in the structures of the bamboo green sheets; the nano calcium carbonate is combined with pores, cracks, grooves and defects among the fibers of the bamboo green sheet, so that the surface roughness of the bamboo green sheet is effectively reduced, the expansion and deformation of the cracks can be effectively hindered when the bamboo green sheet bears stress, the stress load can be effectively transferred, and the mechanical property of the bamboo green sheet is effectively enhanced.
The dodecyl dimethyl betaine can effectively reduce the surface energy of calcium carbonate, not only can effectively reduce the acting force among calcium carbonate molecules and effectively prevent the calcium carbonate ions from agglomerating, but also can form a salt film with the calcium ions exposed outside the calcium carbonate ions; the dodecyl dimethyl betaine on the surface of the calcium carbonate composite bamboo green sheet further reacts with phenolic resin in the hot pressing process, the phenolic resin adhesive is promoted to enter cell walls of the bamboo green sheet by controlling pressure and temperature changes, cellulose, hemicellulose and the like in the phenolic resin adhesive contain a large amount of hydroxyl groups, so that a space interweaving structure is formed among the bamboo green sheet, activated calcium carbonate and the phenolic resin by further through hydrogen bond and association balance action, the bamboo green sheet, wood fiber and crushed aggregates form an integral structure, the bonding force among the bamboo green sheet, the wood fiber and the crushed aggregates is strong, the bonding strength is high, and the tensile strength and the bending strength of the bamboo-wood composite board are excellent.
The waste materials generated in the preparation process of the bamboo-wood composite board are used as one of the raw materials, so that the utilization rate of bamboo materials is improved, the obtained board has good tensile and bending strength, and meanwhile, the size stability of the board is further improved by adopting a program pressurization-pressure relief mode in a hot pressing stage.
Drawings
Fig. 1 is a graph comparing internal bond strengths of bamboo and wood composite boards obtained in example 5 and comparative examples 1-2.
Fig. 2 is a graph comparing the static bending strength and the elastic modulus of the bamboo-wood composite boards obtained in example 5 and comparative examples 1-2.
Fig. 3 is a comparison graph of the 24h water absorption thickness expansion rate of the bamboo-wood composite boards obtained in example 5 and comparative examples 1-2.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 10kg of bamboo green sheets into pieces with the sizes as follows: 50-60mm long, 5-10mm wide and 0.45-0.55mm thick, drying in a 70 ℃ oven for 10min, then soaking in 50kg of 0.5mol/L calcium chloride solution, adding 1kg of dodecyl dimethyl betaine, carrying out ultrasonic treatment for 20min, draining, adding 50kg of 0.5mol/L sodium carbonate solution, carrying out ultrasonic treatment for 1h, filtering, washing with water for 2 times, and drying at 50 ℃ to constant weight to obtain the calcium carbonate composite bamboo green sheet;
s3, uniformly mixing 50kg of calcium carbonate composite bamboo green sheets, 15kg of wood fibers and 10kg of crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 8%, wherein the environmental parameters in the drying oven are 100 ℃ and 60% of humidity, so as to obtain a dried material; spraying 10kg of phenolic resin adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s4, conveying the precast slab into a hot press, setting the pressure to be 2MPa, and carrying out hot pressing at 105 ℃ for 5 min; increasing the pressure to 5MPa, and continuously carrying out hot pressing at 105 ℃ for 10 min; reducing the pressure to 1.5MPa, and standing for 1h at room temperature; increasing the pressure to 3MPa, and hot-pressing at 120 ℃ for 2 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
Example 2
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 20kg of bamboo green sheets into pieces with the sizes as follows: 50-60mm long, 5-10mm wide and 0.45-0.55mm thick, drying in an oven at 80 ℃ for 30min, then soaking in 100kg of calcium chloride solution with the concentration of 1.5mol/L, adding 2kg of dodecyl dimethyl betaine, carrying out ultrasonic treatment for 40min, draining, adding 100kg of sodium carbonate solution with the concentration of 1.5mol/L, carrying out ultrasonic treatment for 2h, filtering, washing with water for 4 times, and drying at 70 ℃ to constant weight to obtain the calcium carbonate composite bamboo green sheet;
s3, uniformly mixing 100kg of calcium carbonate composite bamboo green sheets, 25kg of wood fibers and 30kg of crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 10%, wherein the environmental parameters in the drying oven are 100 ℃ and 70% of humidity to obtain a dried material; spraying 30kg of phenolic resin adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s4, conveying the precast slab into a hot press, setting the pressure to be 4MPa, and carrying out hot pressing at 115 ℃ for 10 min; increasing the pressure to 7MPa, and continuously carrying out hot pressing at 115 ℃ for 15 min; reducing the pressure to 2.5MPa, and standing for 2h at room temperature; increasing the pressure to 5MPa, and hot-pressing at 130 ℃ for 4 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
Example 3
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 13kg of bamboo green sheets into pieces with the sizes as follows: 50-60mm long, 5-10mm wide and 0.45-0.55mm thick, drying in a 77 ℃ oven for 15min, then soaking in 90kg of 0.8mol/L calcium chloride solution, adding 1.7kg of dodecyl dimethyl betaine, carrying out ultrasonic treatment for 25min, draining, adding 80kg of 0.8mol/L sodium carbonate solution, carrying out ultrasonic treatment for 1.7h, filtering, washing with water for 3 times, and drying at 55 ℃ to constant weight to obtain the calcium carbonate composite bamboo green sheet;
s3, uniformly mixing 90kg of calcium carbonate composite bamboo green sheets, 18kg of wood fibers and 25kg of crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 8.5%, wherein the environmental parameters in the drying oven are 100 ℃ and 68% of humidity, so as to obtain a dried material; spraying 15kg of phenolic resin adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s4, conveying the precast slab into a hot press, setting the pressure to be 3.5MPa, and carrying out hot pressing at 108 ℃ for 8 min; increasing the pressure to 5.5MPa, and continuously carrying out hot pressing at 112 ℃ for 12 min; reducing the pressure to 2.2MPa, and standing for 1.2h at room temperature; increasing the pressure to 4.5MPa, and hot-pressing at 122 ℃ for 3.5 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
Example 4
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 17kg of bamboo green sheets into pieces with the sizes as follows: 50-60mm long, 5-10mm wide and 0.45-0.55mm thick, drying in a 73 ℃ oven for 25min, then soaking in 70kg of 1.2mol/L calcium chloride solution, adding 1.3kg of dodecyl dimethyl betaine, carrying out ultrasonic treatment for 35min, draining, adding 60kg of 1.2mol/L sodium carbonate solution, carrying out ultrasonic treatment for 1.3h, filtering, washing with water for 3 times, and drying at 65 ℃ to constant weight to obtain the calcium carbonate composite bamboo green sheet;
s3, uniformly mixing 70kg of calcium carbonate composite bamboo green sheets, 22kg of wood fibers and 15kg of crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 9.5%, wherein the environmental parameters in the drying oven are 100 ℃ and 62% of humidity to obtain a dried material; spraying 25kg of phenolic resin adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s4, conveying the precast slab into a hot press, setting the pressure to be 2.5MPa, and carrying out hot pressing at 112 ℃ for 6 min; increasing the pressure to 6.5MPa, and continuously carrying out hot pressing at 108 ℃ for 14 min; reducing the pressure to 1.8MPa, and standing for 1.6h at room temperature; increasing the pressure to 3.5MPa, and hot-pressing at 128 ℃ for 2.5 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
Example 5
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 15kg of bamboo green sheets into pieces with the sizes as follows: 50-60mm long, 5-10mm wide and 0.45-0.55mm thick, drying in a 75 ℃ oven for 20min, then soaking in 80kg of 1mol/L calcium chloride solution, adding 1.5kg of dodecyl dimethyl betaine, carrying out ultrasonic treatment for 30min, draining, adding 70kg of 1mol/L sodium carbonate solution, carrying out ultrasonic treatment for 1.5h, filtering, washing with water for 3 times, and drying at 60 ℃ to constant weight to obtain the calcium carbonate composite bamboo green sheet;
s3, uniformly mixing 80kg of calcium carbonate composite bamboo green sheets, 20kg of wood fibers and 20kg of crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 9%, wherein the environmental parameters in the drying oven are 100 ℃ and 65% of humidity, so as to obtain a dried material; spraying 20kg of phenolic resin adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s4, conveying the precast slab into a hot press, setting the pressure to be 3MPa, and carrying out hot pressing at 110 ℃ for 7 min; increasing the pressure to 6MPa, and continuously carrying out hot pressing at 110 ℃ for 13 min; reducing the pressure to 2MPa, and standing at room temperature for 1.4 h; increasing the pressure to 4MPa, and hot-pressing at 125 deg.C for 3 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
Comparative example 1
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 80kg of bamboo green slices into pieces with the sizes as follows: the length is 50-60mm, the width is 5-10mm, the thickness is 0.45-0.55mm, 20kg of wood fiber and 20kg of crushed aggregates are added and mixed evenly, the mixture is added into a drying oven to be dried until the water content of the system is 9 percent, the environmental parameters in the drying oven are 100 ℃ and the humidity is 65 percent, and the dried material is obtained; spraying 20kg of phenolic resin adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s3, conveying the precast slab into a hot press, setting the pressure to be 3MPa, and carrying out hot pressing at 110 ℃ for 7 min; increasing the pressure to 6MPa, and continuously carrying out hot pressing at 110 ℃ for 13 min; reducing the pressure to 2MPa, and standing at room temperature for 1.4 h; increasing the pressure to 4MPa, and hot-pressing at 125 deg.C for 3 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
Comparative example 2
A manufacturing method of a bamboo-wood composite board with recycled waste materials comprises the following steps:
s1, crushing the rim charge and the waste plates by using a hammer crusher, and screening to obtain crushed materials with the particle size of 1-5 mm;
s2, slicing 15kg of bamboo green sheets into pieces with the sizes as follows: 50-60mm long, 5-10mm wide and 0.45-0.55mm thick, drying in a 75 ℃ oven for 20min, then soaking in 80kg of 1mol/L calcium chloride solution, adding 1.5kg of dodecyl dimethyl betaine, carrying out ultrasonic treatment for 30min, draining, adding 70kg of 1mol/L sodium carbonate solution, carrying out ultrasonic treatment for 1.5h, filtering, washing with water for 3 times, and drying at 60 ℃ to constant weight to obtain the calcium carbonate composite bamboo green sheet;
s3, uniformly mixing 80kg of calcium carbonate composite bamboo green sheets, 20kg of wood fibers and 20kg of crushed aggregates, adding the mixture into a drying oven, and drying until the water content of the system is 9%, wherein the environmental parameters in the drying oven are 100 ℃ and 65% of humidity, so as to obtain a dried material; spraying 20kg of polyurethane adhesive into the dry material by adopting a spray type wet adhesive method, uniformly mixing, and then directionally paving to obtain a precast slab;
s4, conveying the precast slab into a hot press, setting the pressure to be 3MPa, and carrying out hot pressing at 110 ℃ for 7 min; increasing the pressure to 6MPa, and continuously carrying out hot pressing at 110 ℃ for 13 min; reducing the pressure to 2MPa, and standing at room temperature for 1.4 h; increasing the pressure to 4MPa, and hot-pressing at 125 deg.C for 3 min; and cooling to room temperature, and removing burrs to obtain the bamboo-wood composite board.
The bamboo-wood composite boards (with the thickness of 20 +/-1 mm) obtained in the example 5 and the comparative examples 1-2 are subjected to comparative performance tests, and the test environment is a dry state (the temperature is 20 ℃ and the relative humidity is less than or equal to 65 percent), and the specific conditions are as follows:
1. the internal bonding strength of each group is detected by referring to a test method for physical and chemical properties of the artificial board and the veneer artificial board GB/T17657-2013, and as shown in FIG. 1, the internal bonding strength of the bamboo-wood composite board obtained in example 5 is the highest.
The applicant believes that: the nano calcium carbonate is generated in the pores, cracks, grooves and defects among the fibers of the bamboo green sheet, so that the surface roughness of the bamboo green sheet is effectively reduced, the expansion and deformation of the cracks can be effectively hindered when the bamboo green sheet bears stress, the stress load can be effectively transferred, and the mechanical property of the bamboo green sheet is effectively enhanced; and the dodecyl dimethyl betaine on the surface of the calcium carbonate composite bamboo green sheet further reacts with the phenolic resin in the hot pressing process, the phenolic resin adhesive is promoted to enter the cell wall of the bamboo green sheet by controlling the pressure and temperature changes, wherein cellulose, hemicellulose and the like contain a large amount of hydroxyl groups, so that a space interweaving structure is further promoted to be formed among the bamboo green sheet, the activated calcium carbonate and the phenolic resin through the balance action of hydrogen bonds and association, the bamboo green sheet, the wood fiber and crushed aggregates form an integral structure, and the binding force among the bamboo green sheet, the wood fiber and the crushed aggregates is strong and the binding strength is high.
2. The static bending strength and the elastic modulus (three-point bending) of each group are detected by referring to a GB/T17657-2013 artificial board and veneer artificial board physical and chemical property test method, and as shown in fig. 2, the static bending strength and the elastic modulus strength in the parallel and vertical directions of the bamboo-wood composite board obtained in example 5 are the highest.
The applicant believes that: the nano calcium carbonate is generated in the pores, cracks, grooves and defects among the fibers of the bamboo green sheet, so that the surface roughness of the bamboo green sheet is effectively reduced, the expansion and deformation of the cracks can be effectively hindered when the bamboo green sheet bears stress, the stress load can be effectively transferred, and the mechanical property of the bamboo green sheet is effectively enhanced; and the dodecyl dimethyl betaine on the surface of the calcium carbonate composite bamboo green sheet further reacts with phenolic resin in the hot pressing process, the phenolic resin adhesive is promoted to enter the cell wall of the bamboo green sheet by controlling the pressure and temperature changes, cellulose, hemicellulose and the like in the phenolic resin adhesive contain a large amount of hydroxyl groups, so that a space interweaving structure is formed among the bamboo green sheet, the activated calcium carbonate and the phenolic resin by further using the hydrogen bond and association balance effect, the bamboo green sheet, the wood fiber and crushed aggregates form an integral structure, and the tensile strength and the bending strength of the bamboo-wood composite board are excellent.
3. The 24-hour water absorption thickness expansion rate of each group is detected by referring to GB/T17657-2013 artificial board and veneer artificial board physical and chemical property test method, and as shown in figure 3, the 24-hour water absorption thickness expansion rate of each group of samples is approximate.
By combining the 3 groups of test data, each group of test samples are found to meet the related index of OSB/2 in LY/T1580-2010 oriented strand board, and the invention is proved to be suitable for serving as a bearing plate in a dry state.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A manufacturing method of a bamboo-wood composite board capable of recycling waste materials is characterized by comprising the following steps:
s1, crushing the recycled bamboo and wood waste, and screening to obtain crushed materials;
s2, slicing and drying bamboo green sheets, soaking the bamboo green sheets into a calcium chloride solution, adding dodecyl dimethyl betaine for ultrasonic treatment for 20-40min, draining, adding a sodium carbonate solution for ultrasonic treatment for 1-2h, filtering, and drying at 50-70 ℃ to constant weight to obtain calcium carbonate composite bamboo green sheets;
s3, uniformly mixing the calcium carbonate composite bamboo green sheets, the wood fibers and the crushed materials, adding the mixture into a drying oven, and drying until the water content of the system is 8-10%, wherein the environmental parameters in the drying oven are 100 ℃ and the humidity is 60-70%, so as to obtain a dried material; spraying phenolic resin adhesive into the dried material, uniformly mixing, and directionally paving to obtain a precast slab;
and S4, carrying out programmed hot pressing on the prefabricated plate, and cooling to room temperature to obtain the bamboo-wood composite plate.
2. The method for manufacturing bamboo-wood composite boards by recycling waste materials according to claim 1, wherein the particles of the crushed materials obtained in the step S1 have a particle size of 1-5 mm.
3. The method for manufacturing the bamboo-wood composite board by recycling the waste according to claim 1, wherein in the step S2, the drying operation is as follows: drying the sliced bamboo green slices in an oven at 70-80 deg.C for 10-30 min.
4. The method for manufacturing the bamboo-wood composite board by recycling the waste according to claim 1, wherein in the step S2, the concentration of the calcium chloride solution is 0.5-1.5mol/L, and the concentration of the sodium carbonate solution is 0.5-1.5 mol/L.
5. The method for manufacturing the bamboo-wood composite board by recycling the waste according to claim 4, wherein in S2, the mass ratio of the bamboo green sheets to the calcium chloride solution to the dodecyl dimethyl betaine to the sodium carbonate solution is 10-20: 50-100: 1-2: 50-100.
6. The manufacturing method of the bamboo-wood composite board for recycling the waste according to claim 1, wherein in S2, the waste is filtered and washed by clean water.
7. The method for manufacturing the bamboo-wood composite board by recycling the waste according to claim 1, wherein in S3, the mass ratio of the calcium carbonate composite bamboo green sheets to the wood fibers to the crushed aggregates to the phenolic resin adhesive is 50-100: 15-25: 10-30: 10-30.
8. The method for manufacturing the bamboo-wood composite board by recycling the waste according to claim 1, wherein in S4, the procedure hot pressing specifically comprises the following operations: setting the pressure to be 2-4MPa, and hot pressing at 105-115 ℃ for 5-10 min; increasing the pressure to 5-7MPa, and continuously carrying out hot pressing at the temperature of 105-; reducing the pressure to 1.5-2.5MPa, and standing for 1-2h at room temperature; increasing the pressure to 3-5MPa, and carrying out hot pressing at the temperature of 120-130 ℃ for 2-4 min.
9. A bamboo-wood composite board, characterized in that, the bamboo-wood composite board is made by the method for manufacturing the bamboo-wood composite board by recycling the waste material according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489292.4A CN114888919B (en) | 2022-05-07 | 2022-05-07 | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489292.4A CN114888919B (en) | 2022-05-07 | 2022-05-07 | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114888919A true CN114888919A (en) | 2022-08-12 |
| CN114888919B CN114888919B (en) | 2024-05-07 |
Family
ID=82719886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210489292.4A Active CN114888919B (en) | 2022-05-07 | 2022-05-07 | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114888919B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1970259A (en) * | 2006-12-04 | 2007-05-30 | 杭州大庄地板有限公司 | Method for producing bamboo board |
| CN101187181A (en) * | 2007-12-03 | 2008-05-28 | 晏永祥 | Alkaline method for zero-residual alkaline boiling pulp making method |
| CN101269930A (en) * | 2008-05-06 | 2008-09-24 | 福州大学 | Enzymolysis xylogen or its derivative modified pnenolic aldehyde foam material and preparation method thereof |
| CN101481477A (en) * | 2009-01-31 | 2009-07-15 | 戴福寿 | Wood-plastic material and preparation thereof |
| CN101830014A (en) * | 2010-06-11 | 2010-09-15 | 中南林业科技大学 | Method for preventing bamboo wood from mildewing |
| CN102002287A (en) * | 2010-11-09 | 2011-04-06 | 浙江大学 | Bamboo charcoal-containing architectural coating and preparation method thereof |
| CN102180829A (en) * | 2011-03-17 | 2011-09-14 | 南京华狮化工有限公司 | Surface-modified pyridine thioketone salt and application thereof |
| CN102234503A (en) * | 2010-04-21 | 2011-11-09 | 陈新阳 | Oil displacement agent |
| CN102490233A (en) * | 2011-12-02 | 2012-06-13 | 朱江福 | Manufacture method for bamboo wood composite boards |
| CN103508704A (en) * | 2012-06-29 | 2014-01-15 | 日吉华株式会社 | Inorganic board and method for manufacturing inorganic board |
| CN103963132A (en) * | 2013-01-31 | 2014-08-06 | 北京林业大学 | Boron type flame retardant directional shaving board and preparation method thereof |
| CN104151018A (en) * | 2014-07-02 | 2014-11-19 | 怀宁县牧之金畜禽实业有限责任公司 | High-efficiency, loss-resistant and disease-preventing organic and inorganic compound fertilizer |
| CN106478311A (en) * | 2016-12-27 | 2017-03-08 | 贵州大学 | A kind of fertilizer for phthalic acid ester contaminated soil |
-
2022
- 2022-05-07 CN CN202210489292.4A patent/CN114888919B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1970259A (en) * | 2006-12-04 | 2007-05-30 | 杭州大庄地板有限公司 | Method for producing bamboo board |
| CN101187181A (en) * | 2007-12-03 | 2008-05-28 | 晏永祥 | Alkaline method for zero-residual alkaline boiling pulp making method |
| CN101269930A (en) * | 2008-05-06 | 2008-09-24 | 福州大学 | Enzymolysis xylogen or its derivative modified pnenolic aldehyde foam material and preparation method thereof |
| CN101481477A (en) * | 2009-01-31 | 2009-07-15 | 戴福寿 | Wood-plastic material and preparation thereof |
| CN102234503A (en) * | 2010-04-21 | 2011-11-09 | 陈新阳 | Oil displacement agent |
| CN101830014A (en) * | 2010-06-11 | 2010-09-15 | 中南林业科技大学 | Method for preventing bamboo wood from mildewing |
| CN102002287A (en) * | 2010-11-09 | 2011-04-06 | 浙江大学 | Bamboo charcoal-containing architectural coating and preparation method thereof |
| CN102180829A (en) * | 2011-03-17 | 2011-09-14 | 南京华狮化工有限公司 | Surface-modified pyridine thioketone salt and application thereof |
| CN102490233A (en) * | 2011-12-02 | 2012-06-13 | 朱江福 | Manufacture method for bamboo wood composite boards |
| CN103508704A (en) * | 2012-06-29 | 2014-01-15 | 日吉华株式会社 | Inorganic board and method for manufacturing inorganic board |
| CN103963132A (en) * | 2013-01-31 | 2014-08-06 | 北京林业大学 | Boron type flame retardant directional shaving board and preparation method thereof |
| CN104151018A (en) * | 2014-07-02 | 2014-11-19 | 怀宁县牧之金畜禽实业有限责任公司 | High-efficiency, loss-resistant and disease-preventing organic and inorganic compound fertilizer |
| CN106478311A (en) * | 2016-12-27 | 2017-03-08 | 贵州大学 | A kind of fertilizer for phthalic acid ester contaminated soil |
Non-Patent Citations (3)
| Title |
|---|
| 贾贞: "扩散法制备纳米碳酸钙/速生杨木复合材料", pages 61 - 72 * |
| 贾贞: "纳米碳酸钙/速生杨木复合材料及制作建筑模板的研究", 《中国博士学位论文全文数据库工程科技Ⅰ辑》 * |
| 贾贞: "纳米碳酸钙/速生杨木复合材料及制作建筑模板的研究", 《中国博士学位论文全文数据库工程科技Ⅰ辑》, no. 11, 15 November 2012 (2012-11-15), pages 44 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114888919B (en) | 2024-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101066606B (en) | Process of producing bamboo chipboard | |
| CN100526038C (en) | A method for preparing straw particle board | |
| CN112077954B (en) | Preparation method of two-dimensional woven green environment-friendly high-strength wood-based composite material | |
| CN102409835B (en) | High-density composite board specially used for wood floor and manufacturing method thereof | |
| CN104552488A (en) | Flame retardant composite board and manufacture method thereof | |
| CN105201085B (en) | A kind of composite plate and preparation method thereof | |
| CN100575022C (en) | Bamboo matter medium density fibre board (MDF) | |
| AU2020101573A4 (en) | A Method for Manufacturing Bamboo-wood Composite Fire Retarding Structural Panel | |
| CN104015240A (en) | Processing method for corrosion-resistance high-strength bamboo visa board | |
| CN112078217A (en) | Preparation method of wood reinforced thermoplastic resin-based environment-friendly formaldehyde-free composite material | |
| WO2021022445A1 (en) | Wooden fireproof pressure-treated board and manufacturing method therefor | |
| CN102166773A (en) | Processing method for producing top-grade yacht material with black and white interval stripes by utilizing small wood | |
| CN114888919A (en) | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board | |
| CN106393385A (en) | Method for producing zero-formaldehyde light fiberboards through unsaturated polyester resin | |
| JPH0716964A (en) | Laminated material and its manufacture | |
| CN104669395A (en) | Manufacture method of low-density fiberboard | |
| CN111302685A (en) | Preparation method of wheat straw fiber reinforced cement board and wheat straw fiber reinforced cement board | |
| CN102555009A (en) | High-strength environment-friendly shaving board | |
| CN102454276A (en) | Manufacturing method of super-thick bamboo-wood composite floor | |
| CN114833912A (en) | Straw composite board and manufacturing method thereof | |
| CN105291234A (en) | Method for producing sandwich composite wallboard through waste bamboo plywood | |
| CN113386235A (en) | Cellulose natural skeleton-based bamboo steel and processing technology thereof | |
| CN111943631A (en) | Magnesium cement glued straw artificial board and preparation method thereof | |
| CN110802704A (en) | Composite batten based on combination of glass fiber reinforced plastic fibers and waste wood boards and production process | |
| CN100392015C (en) | Composite fiber plate and preparing method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |