CN107030844B - The method of pressure sintering preparation and reorganization bamboo board - Google Patents
The method of pressure sintering preparation and reorganization bamboo board Download PDFInfo
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- CN107030844B CN107030844B CN201710410993.3A CN201710410993A CN107030844B CN 107030844 B CN107030844 B CN 107030844B CN 201710410993 A CN201710410993 A CN 201710410993A CN 107030844 B CN107030844 B CN 107030844B
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- 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
-
- 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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- 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
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
-
- 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
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
Abstract
The invention discloses a kind of methods of pressure sintering preparation and reorganization bamboo board, belong to composite board field.Method includes the following steps: the first step, moso bamboo is impregnated in water by new felling moso bamboo with the mass ratio of 1:10~20, after 10~20min, dimefluthrin and ethyl alcohol are added into water, after impregnating 20~30h, gas is dry；Moso bamboo is split into after bamboo chip and air-dries by second step, carries out temperature-pressure boiling processing, and treated that bamboo chip is rolled into bamboo beam for boiling, dry；Adhesive is added in bamboo beam assembly layer by layer by third step between layers, hot-forming after placing 12~24min, and 40~60 DEG C of hot pressing temperature, pressure is 2~3MPa.Tensile strength parallel to grain of the invention, parallel-to-grain compressive strength, bending strength, shearing strength, Deflection Modulus of Elasticity all have apparent advantage, as a kind of artificial compounded material, can be widely applied to wood processing field.
Description
Technical field
The invention belongs to composite board field more particularly to a kind of methods of pressure sintering preparation and reorganization bamboo board.
Background technique
Timber is largely cut down every year, causes very big influence to environment, in recent years high-quality timber, especially hardwood
Supply it is fewer and fewer, price is higher and higher, as redwood price at double or even the rise of decades of times.Timber supply and demand contradiction
Aggravation, seriously constrain the development of China furniture industry, become the bottleneck of development.To solve this problem, people play clever
Ability and intelligence, constantly progress Innovation Exploring, develop a variety of new materials, new process, new technology.Such as degreasing pinewoods technology, E0 grades (or nothing
Aldehyde) artificial plate with low release content of free formaldehyde, Functional wood-based panel, cellular board, wood plastic composite (WPC material) etc..Recombined bamboo is just
It is a kind of development and application in recent years, noticeable new material.
Recombined bamboo is also known as heavy bamboo, is using the bamboo matter artificial compounded material formed after brush wood processing, by bamboo wood again group
A kind of molding bamboo matter new material is knitted and strengthened, that is, by bamboo processing growth strip thin bamboo strips used for weaving, bamboo silk or pulverizes into bamboo
Tow, impregnation after drying, re-dry to moisture content is required, then laying in a mold, through made of high temperature and pressure heat cure
Profile.
Application No. is the Chinese patent applications of CN201210363007.0 to disclose a kind of hollow reconsolidated bamboo and its manufacturer
Method, hollow reconsolidated bamboo its be with bamboo beam, bamboo silk or tiny thin bamboo strips used for weaving shape bonding connection at plate in set along the longitudinal direction
It is equipped with hole.Manufacturing method is that raw bamboo is discongested into bamboo beam, bamboo silk or tiny thin bamboo strips used for weaving along the longitudinal direction, is carried out by heat treatment soft
Change, after dry impregnation, bamboo unit of uniformly mating formation by different level in molding slot, according still further to hollow rate require along bamboo beam, bamboo silk or
Thin thin bamboo strips used for weaving longitudinal direction parallel direction, is laid with moulded rod.This method enhances longitudinal resistance to compression, bending resistance after hollow reconsolidated bamboo can be made to form
Intensity.But its band resistance to compression, bending strength and shearing strength are lower.
Summary of the invention
The present invention provides to solve the problems, such as that the resistance to compression of prior art composite board, bending resistance and shear behavior cannot be taken into account
A kind of method of pressure sintering preparation and reorganization bamboo board carries out pretreated skill to moso bamboo using dimefluthrin and ethyl alcohol
Art improves the compressive property, anti-bending strength and shear behavior of recombined bamboo plate.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme:
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:10~20 by the first step,
After 10~20min, dimefluthrin and ethyl alcohol are added into water, after impregnating 20~30h, gas is dry；
Moso bamboo is removed ring by second step, is air-dried after being split into bamboo chip along machine direction, and bamboo chip, which is put into band pressure, to be added
Temperature-pressure boiling processing is carried out in the container of heat, treated that bamboo chip is rolled into bamboo beam for boiling, dry；
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, hot-forming after placing 12~24min,
40~60 DEG C of hot pressing temperature, pressure is 2~3MPa.
Preferably, the mass fraction of ethyl alcohol is 35% in the first step.
Preferably, the dimefluthrin of 10~20g and the ethyl alcohol of 200~500g are added in every 1kg water in the first step
Solution.
Preferably, the dimefluthrin of 15g and the ethanol solution of 400g are added in every 1kg water in the first step.
Preferably, the bamboo chip width of preparation is 10~20mm in second step.
Preferably, the temperature of temperature-pressure boiling processing is 190~200 DEG C in second step, the time is 2~3h, pressure
For 800~1000Pa；The digestion media used is distilled water；The digestion media used when boiling processing processing is deionized water.
Preferably, the moisture content of moso bamboo is 19~25% after drying in second step.
Preferably, the weight ratio of the adhesive and bamboo chip is 1: 20~60 in third step.
Preferably, adhesive is Polyvinyl acetate adhesive, phenolic resin adhesive, Lauxite in third step
One of adhesive, epoxy resin adhesive or chloroprene rubber adhesive.
Preferably, the polyvinyl acetate in the Polyvinyl acetate adhesive is by lignin modification.
Preferably, lignin modification polyvinyl acetate the preparation method is as follows: lignin in 90 DEG C be dried in vacuo
1 part of polyvinyl acetate is added in 48h, and 1h is heated under the conditions of 100 DEG C, and 1~5 part of polyamide is added, and high-speed mixer stirs,
Vacuum defoamation solidifies for 24 hours at room temperature, then in 120 DEG C of solidification 3h.
The invention has the following advantages: tensile strength parallel to grain of the invention, parallel-to-grain compressive strength, bending strength, anti-
Cut intensity, Deflection Modulus of Elasticity all has apparent advantage, as a kind of artificial compounded material, can be widely applied to timber and add
Work field.Recombined bamboo made of moso bamboo through dimefluthrin and ethyl alcohol immersion treatment, parallel-to-grain compressive strength and shearing strength
It is remarkably reinforced；The tensile strength parallel to grain of Recombined bamboo is mainly the tearing between glue-line and moso bamboo fiber, by lignin modification
Bonding between Polyvinyl acetate adhesive and moso bamboo fiber is even closer, therefore its tensile strength parallel to grain greatly enhances.
Specific embodiment
The present invention is further described in detail combined with specific embodiments below.
Embodiment 1
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:15 by the first step,
After 15min, the ethyl alcohol that dimefluthrin and mass fraction are 35% is added into water, after impregnating 25h, gas is dry；In every 1kg water
The dimefluthrin of 15g and the ethanol solution of 400g is added.
Moso bamboo is removed ring by second step, is air-dried after being split into the bamboo chip that width is 10~20mm along machine direction, bamboo chip
It is put into the band heatable container of pressure and carries out temperature-pressure boiling processing, treated that bamboo chip is rolled into bamboo beam for boiling, dry
Moisture content to bamboo beam is 23%；The temperature of temperature-pressure boiling processing is 195 DEG C, time 2.3h, pressure 900Pa；Using
Digestion media be distilled water；The digestion media used when boiling processing processing is deionized water.
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 20min, hot-forming, hot pressing
Temperature 50 C, pressure 2.3MPa.The weight ratio of the adhesive and bamboo chip is 1: 40, and adhesive is glutinous for polyvinyl acetate glue
Agent.
Polyvinyl acetate in the Polyvinyl acetate adhesive is by lignin modification, and method of modifying is such as
Under: 1 part of polyvinyl acetate is added in 90 DEG C of vacuum drying 48h in lignin, and 1h is heated under the conditions of 100 DEG C, is added 3 parts and gathers
Amide, high-speed mixer stirring, vacuum defoamation solidifies for 24 hours at room temperature, then in 120 DEG C of solidification 3h.
The polyamide additional amount can be 1~5 part, and the present embodiment uses 3 parts.
Embodiment 2
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:10 by the first step,
After 10min, the ethyl alcohol that dimefluthrin and mass fraction are 35% is added into water, after impregnating 20h, gas is dry；In every 1kg water
The dimefluthrin of 10g and the ethanol solution of 200g is added.
Moso bamboo is removed ring by second step, is air-dried after being split into the bamboo chip that width is 10~20mm along machine direction, bamboo chip
It is put into the band heatable container of pressure and carries out temperature-pressure boiling processing, treated that bamboo chip is rolled into bamboo beam for boiling, dry
Moisture content to bamboo beam is 19%；The temperature of temperature-pressure boiling processing is 190 DEG C, time 2h, pressure 800Pa；It uses
Digestion media is distilled water；The digestion media used when boiling processing processing is deionized water.
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 12min, hot-forming, hot pressing
40 DEG C of temperature, pressure 2MPa.The weight ratio of the adhesive and bamboo chip is 1: 20, and adhesive is phenolic resin adhesive.
Embodiment 3
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:20 by the first step,
After 20min, the ethyl alcohol that dimefluthrin and mass fraction are 35% is added into water, after impregnating 30h, gas is dry；In every 1kg water
The dimefluthrin of 20g and the ethanol solution of 500g is added.
Moso bamboo is removed ring by second step, air-dries after being split into the bamboo chip that width is 20mm along machine direction, bamboo chip is put into
Carry out temperature-pressure boiling processing in the band heatable container of pressure, boiling treated bamboo chip is rolled into bamboo beam is dry to bamboo
The moisture content of beam is 25%；The temperature of temperature-pressure boiling processing is 200 DEG C, time 3h, pressure 1000Pa；The steaming of use
Boiling medium is distilled water；The digestion media used when boiling processing processing is deionized water.
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 24min, hot-forming, hot pressing
Temperature 60 C, pressure 3MPa.The weight ratio of the adhesive and bamboo chip is 1: 60, and adhesive is urea-formaldehyde resin adhesive.
Embodiment 4
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:18 by the first step,
After 12min, the ethyl alcohol that dimefluthrin and mass fraction are 35% is added into water, after impregnating 20~30h, gas is dry；Every 1kg
The dimefluthrin of 13g and the ethanol solution of 300g are added in water.
Moso bamboo is removed ring by second step, air-dries after being split into the bamboo chip that width is 12mm along machine direction, bamboo chip is put into
Carry out temperature-pressure boiling processing in the band heatable container of pressure, boiling treated bamboo chip is rolled into bamboo beam is dry to bamboo
The moisture content of beam is 23%；The temperature of temperature-pressure boiling processing is 193 DEG C, time 2.5h, pressure 900Pa；The steaming of use
Boiling medium is distilled water；The digestion media used when boiling processing processing is deionized water.
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 15min, hot-forming, hot pressing
55 DEG C of temperature, pressure 2.7MPa.The weight ratio of the adhesive and bamboo chip is 1: 30, and adhesive is chloroprene rubber adhesive.
Reference examples 1
Difference with embodiment 4 is: dimefluthrin and ethyl alcohol is not added in the water of the first step.
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:18 by the first step,
After 12min, after continuing 20~30h of immersion, gas is dry；
Moso bamboo is removed ring by second step, air-dries after being split into the bamboo chip that width is 12mm along machine direction, bamboo chip is put into
Carry out temperature-pressure boiling processing in the band heatable container of pressure, boiling treated bamboo chip is rolled into bamboo beam is dry to bamboo
The moisture content of beam is 23%；The temperature of temperature-pressure boiling processing is 193 DEG C, time 2.5h, pressure 900Pa；The steaming of use
Boiling medium is distilled water；The digestion media used when boiling processing processing is deionized water.
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 15min, hot-forming, hot pressing
55 DEG C of temperature, pressure 2.7MPa.The weight ratio of the adhesive and bamboo chip is 1: 30, and adhesive is chloroprene rubber adhesive.
Reference examples 2
The difference from embodiment 1 is that: the polyvinyl acetate in Polyvinyl acetate adhesive is improved without lignin,
Using commercially available Polyvinyl acetate adhesive.
The method of pressure sintering preparation and reorganization bamboo board, comprising the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:15 by the first step,
After 15min, the ethyl alcohol that dimefluthrin and mass fraction are 35% is added into water, after impregnating 25h, gas is dry；In every 1kg water
The dimefluthrin of 15g and the ethanol solution of 400g is added.
Moso bamboo is removed ring by second step, is air-dried after being split into the bamboo chip that width is 10~20mm along machine direction, bamboo chip
It is put into the band heatable container of pressure and carries out temperature-pressure boiling processing, treated that bamboo chip is rolled into bamboo beam for boiling, dry
Moisture content to bamboo beam is 23%；The temperature of temperature-pressure boiling processing is 195 DEG C, time 2.3h, pressure 900Pa；Using
Digestion media be distilled water；The digestion media used when boiling processing processing is deionized water.
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 20min, hot-forming, hot pressing
Temperature 50 C, pressure 2.3MPa.The weight ratio of the adhesive and bamboo chip is 1: 40, and adhesive is glutinous for polyvinyl acetate glue
Agent.
Performance test:
| Tensile strength parallel to grain Mpa | Parallel-to-grain compressive strength Mpa | Bending strength Mpa | Shearing strength Mpa | Deflection Modulus of Elasticity GPa | |
| Embodiment 1 | 132.7 | 79.6 | 125.4 | 59.6 | 19.4 |
| Embodiment 2 | 130.5 | 78.9 | 124.7 | 58.4 | 19.3 |
| Embodiment 3 | 129.9 | 77.0 | 125.3 | 58.9 | 18.9 |
| Embodiment 4 | 131.4 | 79.3 | 123.8 | 59.3 | 19.2 |
| Reference examples 1 | 112.8 | 34.1 | 101.6 | 32.4 | 12.3 |
| Reference examples 2 | 60.4 | 63.1 | 99.3 | 42.1 | 11.6 |
As can be seen from the table, tensile strength parallel to grain of the invention, parallel-to-grain compressive strength, bending strength, shearing strength, anti-
Curved elasticity modulus all has apparent advantage, as a kind of artificial compounded material, can be widely applied to wood processing field.It is right
As usual in 1 using Recombined bamboo made of the moso bamboo without dimefluthrin and ethyl alcohol immersion treatment, parallel-to-grain compressive strength and anti-
Intensity is cut to be substantially reduced；Tensile strength parallel to grain is substantially reduced in reference examples 2, this may be the tensile strength parallel to grain because of Recombined bamboo
Tearing mainly between glue-line and moso bamboo fiber, by lignin modification Polyvinyl acetate adhesive and moso bamboo fiber it
Between bonding it is even closer, therefore its tensile strength parallel to grain greatly enhances.
The above, preferable specific embodiment only of the invention, the scope of protection of the present invention is not limited to this, any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (1)
1. the method for pressure sintering preparation and reorganization bamboo board, which comprises the following steps:
Moso bamboo is impregnated the new bamboo blueness felled moso bamboo and remove surface in water with the mass ratio of 1:10~20 by the first step, 10~
After 20min, dimefluthrin and ethyl alcohol are added into water, after impregnating 20~30h, gas is dry；
Moso bamboo is removed ring by second step, is air-dried after being split into bamboo chip along machine direction, and it is heatable that bamboo chip is put into band pressure
Temperature-pressure boiling processing is carried out in container, treated that bamboo chip is rolled into bamboo beam for boiling, dry；
Adhesive is added in bamboo beam assembly layer by layer by third step between layers, after placing 12~24min, hot-forming, hot pressing
40~60 DEG C of temperature, pressure is 2~3MPa；
In the first step, the mass fraction of ethyl alcohol is 35%；
In the first step, the dimefluthrin of 10~20g and the ethanol solution of 200~500g are added in every 1kg water；
In second step, the bamboo chip width of preparation is 10~20mm；
In second step, temperature-pressure boiling processing temperature be 190~200 DEG C, the time be 2~3h, pressure be 800~
1000Pa；The digestion media used is distilled water；The digestion media used when boiling processing processing is deionized water；
In second step, the moisture content of moso bamboo is 19~25% after drying；
In third step, the weight ratio of the adhesive and bamboo chip is 1: 20~60；
In third step, adhesive is Polyvinyl acetate adhesive, phenolic resin adhesive, urea-formaldehyde resin adhesive, asphalt mixtures modified by epoxy resin
One of rouge adhesive or chloroprene rubber adhesive；
Polyvinyl acetate in the Polyvinyl acetate adhesive is by lignin modification；
Lignin modification polyvinyl acetate the preparation method is as follows: 1 part of poly-vinegar is added in 90 DEG C of vacuum drying 48h in lignin
Vinyl acetate heats 1h under the conditions of 100 DEG C, and 1~5 part of polyamide is added, and high-speed mixer stirs, vacuum defoamation, at room temperature
Solidify for 24 hours, then in 120 DEG C of solidification 3h.
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| CN115625763B (en) * | 2022-09-22 | 2023-09-12 | 国家林业和草原局竹子研究开发中心 | Slicing Bao Zhuzhi manufacturing method based on bamboo raw material gluing |
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| US5972467A (en) * | 1998-07-23 | 1999-10-26 | Washo; Kenji | Pressure forming process for pressure-formed bamboo products |
| CN101279463B (en) * | 2008-03-27 | 2011-08-17 | 中国林业科学研究院木材工业研究所 | Recombined bamboo plate blank, assembly-forming method thereof and apparatus and recombined bamboo |
| CN201683400U (en) * | 2010-03-24 | 2010-12-29 | 福建省永林竹业有限公司 | Furniture board made of bamboo reconstructed materials |
| CN103128830B (en) * | 2013-03-11 | 2015-05-27 | 浙江省林业科学研究院 | Production method of formaldehyde-free reconstituted bamboo flooring |
| CN103496024B (en) * | 2013-09-09 | 2015-08-12 | 浙江长兴森大竹木制品有限公司 | Recombined bamboo plate production technology |
| CN104875249A (en) * | 2015-05-11 | 2015-09-02 | 浙江永裕竹业股份有限公司 | Method for manufacturing high quality recombinant bamboo |
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