CN109366657A - A method of plate is prepared using wood waste - Google Patents
A method of plate is prepared using wood waste Download PDFInfo
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- CN109366657A CN109366657A CN201811363407.5A CN201811363407A CN109366657A CN 109366657 A CN109366657 A CN 109366657A CN 201811363407 A CN201811363407 A CN 201811363407A CN 109366657 A CN109366657 A CN 109366657A
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- Prior art keywords
- bamboo
- wood
- plate
- powder
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- 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.)
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Classifications
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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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
-
- 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
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The present invention provides a kind of methods for preparing plate using wood waste, adhesive is prepared using the higher bamboo liquefied substance of phenol product assay, the timber powder that low temperature drying is crossed is uniformly mixed with the adhesive, it is added in mold and plate is made in 120-150 DEG C, pressure 4-8MPa, hot pressing 8-15min.Phenolic resin adhesive is substituted using bamboo liquefied substance base adhesive, there is better compatibility with wood powder, made plate property more preferably, while having the advantages that environmentally protective, substantially increase the utilization rate of bamboo wood scrap material have great economic benefit.
Description
Technical field
The invention belongs to construction material preparation technical fields, and in particular to the method for preparing plate using wood waste.
Background technique
Plate is the easy consumption material of building trade, with falling sharply for the forest reserves, is developed and utilizes wood waste gluing
Adhesive hot pressing for building board method.Solves bamboo wood scrap material secondary use using adhesive prepared by bamboo liquefied substance
The problem of, reduce environmental pollution brought by phenolic resin adhesive.
Bamboo be the important component of the forest reserves be known as the second forest title China be located in the world's bamboo distribution in
Heart bamboo grove area ranks first in the world, and is mainly distributed on southern 17 provinces, various with the further rise of bamboo processing industry
Bamboo wood defective material is also stepped up.Therefore, it is significant to develop the huge regenerated resources progress deep processing of this energy storage.
Bamboo wood is a kind of perennial natural plants trunk, and chemical component is more complicated.Research shows that: cellulose, half fiber
Dimension element, lignin be the main component to form bamboo culm wall, directly participation bamboo wood material formation, three's total amount 90% with
On, wherein content of cellulose accounts for 40%~60%, bamboo wood other than containing cellulose, hemicellulose, lignin, also containing grease,
Carbohydrate and protein-based equal substances.In addition, also containing a small amount of ash content and extract.
Bamboo liquefied is one of the effective ways of bamboo wood comprehensive utilization, and bamboo liquefied refers to the presence in certain organic matters
Under, convert bamboo wood to the thermochemical process of liquid, and then bamboo wood defective material can be changed into the high macromolecule material of application value
Material.It is one of the effective means of bamboo wood trans-utilization using bamboo wood and its waste-material-preparing bamboo liquefied substance phenolic resin.It is right at present
Thermosetting phenolic resin, especially based Wood Adhesives, phenolic foam material are focused primarily upon in bamboo wood and its waste modified resin
Deng.
Fu abyss etc. (performance [D] the Beijing Forestry University of bamboo liquefied resinification kinetics and its product,
2010) Resin adhesive is successfully prepared under the catalysis of alkali using bamboo product rejectable waste Liquefaction Products in Phenol object and formaldehyde, it should
Adhesive is similar to the conventional structure of adhesive.But contain remaining grease, carbohydrate and protein in bamboo wood in the adhesive
The impurity such as class leverage the glue performance and machinery of plate from its internal migration to surface in adhesive use process
Performance.
Summary of the invention
The present invention provides a kind of method for preparing plate using wood waste, concrete operation methods are as follows:
(1)) bamboo particle pretreatment: by bamboo wood crushed material using hot water in 80-90 DEG C after digestion 8-10 hour, filtering, then using second
Acetoacetic ester-isopropanol mixed solvent in 70-85 DEG C extracting 12-24 hours, filtering, after filtration cakes torrefaction pretreated bamboo wood
Powder.In addition to containing main component cellulose, hemicellulose, lignin in bamboo wood, also containing grease, carbohydrate and protein-based etc.
Impurity, these impurity are simultaneously not involved in the liquefaction reaction and subsequent and formaldehyde condensation reaction of phenol, but in the form of impurity
It is present in the phenolic resin product of bamboo liquefied substance, and constantly moves to surface from inside in product use process, influences
The performance and stability of product.80-90 DEG C of hot water digestion bamboo wood crushed material is first used, convenient for the removing of bamboo fiber, so that miscellaneous
Matter separate out, then extracted using mixed solvent ethyl acetate-isopropanol, impurity is further dissolved in the mixed solvent, from
And impurity is utmostly removed, improve liquefied substance purity.
(2) bamboo liquefied: bamboo wood powder pretreated obtained by part steps (1), phenol and catalyst BF3 are added anti-
It answers in container, is stirred to react in 100-120 DEG C 4-6 hours, remaining pretreated bamboo wood powder, reaction knot is during which added portionwise
It is filtered while hot after beam, filtrate is bamboo liquefied substance；
(3) prepared by adhesive: bamboo liquefied substance obtained by step (2) being added in reaction vessel, NaOH is used to adjust its PH as 8-
9,37% formalin is added, after reaction 4-6 hours, is cooled to 30-40 DEG C of addition surfactant and Meng Tuo in 80-95 DEG C
Soil after insulated and stirred 20-40min, obtains bamboo liquefied substance base adhesive.Lignin, cellulose and hemicellulose after bamboo liquefied
Element decomposes, and is grafted with phenolic hydroxyl group ring, generates a series of phenolate products, then carries out being condensed obtained adhesive, reaction knot with formaldehyde
Surfactant and the montmorillonite with lamellar structure is added, so that adhesive polymer strand and montmorillonite are effective in Shu Hou
It is compound, it on the one hand can increase the mechanical performance of adhesive, on the other hand, remaining a small amount of non-phenolate product is miscellaneous in bamboo liquefied substance
Matter is embedded by montmorillonite layer, reduces its molecular migration, improves the bond properties and weather resistance of adhesive.
(4) prepared by plate: the timber powder that low temperature drying is crossed is mixed with bamboo liquefied substance base adhesive obtained by step (3)
Uniformly, hot pressing in mold is added to form up to required plate.
Preferably, the mass ratio of bamboo wood crushed material described in step (1) and hot water is 1:10-20.
Preferably, the dosage of mixed solvent described in step (1) is 15-20 times of bamboo wood crushed material quality.
Preferably, the mass ratio of the in the mixed solvent ethyl acetate and isopropanol is 1:1.5-2, using the proportion
MIXED SOLVENT EXTRACTION effect is best.
Preferably, the mass ratio of the pretreated bamboo wood powder, phenol and catalyst is 1:2-3:0.05-
0.12。
Preferably, the bamboo liquefied substance, 37% formalin, surfactant and the mass ratio of montmorillonite are 1:
1.2-1.6:0.03-0.05:0.1-0.3。
Preferably, the surfactant is sodium sulfate of polyethenoxy ether of fatty alcohol, dodecyl sodium sulfate or single ten
Dialkyl phosphate potassium.
Preferably, the mass ratio of timber powder described in step (4) and bamboo liquefied substance base adhesive is 1:0.12-
0.26。
Preferably, the temperature of hot pressing described in step (4) is 120-150 DEG C, pressure 4-8MPa, hot pressing time 8-
15min, most fast in the curing rate of 120-150 DEG C of adhesive, adhesion effect is best.
It is aqueous in timber powder preferably, timber powder moisture content≤8% that low temperature drying described in step (4) is crossed
Rate is low, is conducive to it and fully absorbs adhesive, to reach best adhesion effect.
The invention has the benefit that
1, the present invention is first preprocessed by bamboo wood crushed material, utmostly removes and is wherein not involved in Liquefaction Products in Phenol and formaldehyde condensation is anti-
The impurity answered improves phenol product assay in liquefied substance, reduces impurity content in adhesive, improves the adhesive strength of adhesive
And weatherability, to improve plate mechanical performance.
2, montmorillonite and surfactant are added in adhesive preparation process, is increasing the same of adhesive mechanical performance
When, it is further reduced non-phenolate impurity in products mobility, helps to improve plate glue performance and mechanical performance.
3, phenolic resin adhesive is substituted using bamboo liquefied substance base adhesive, there is better phase with wood powder
Capacitive, made plate property more preferably, while having the advantages that environmentally protective, substantially increase the utilization rate of bamboo wood scrap material, have
Great economic benefit.
Specific embodiment
In order to which technical solution of the present invention and advantage is more clearly understood, with reference to embodiments to the present invention carry out into
One step is described in detail.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit this hair
It is bright.
Embodiment 1
(1) bamboo particle pretreatment: 10g bamboo wood crushed material and 100g deionized water are placed in there-necked flask, in 90 DEG C digestion 8 hours
Afterwards, it filters, then 150g mass ratio is used to extract 24 hours for the mixed solvent of the ethyl acetate-isopropanol of 1:1.5 in 70 DEG C, mistake
It filters, the pretreated bamboo wood powder of 9.2g is obtained after filtration cakes torrefaction.
(2) bamboo liquefied: by bamboo wood powder, 18g phenol and 0.9g catalyst BF3 pretreated obtained by 3g step (1)
It is added in there-necked flask, is stirred to react in 100 DEG C 6 hours, the pretreated bamboo wood powder of remaining 6g is during which added in three batches, instead
It is filtered while hot after answering, obtains filtrate 14.2g, as bamboo liquefied substance；
(3) prepared by adhesive: 10g bamboo liquefied substance is added in there-necked flask, 20%NaOH- aqueous solution is used to adjust its PH as 8,
12g37% formalin is added, after 80 DEG C are reacted 6 hours, is cooled to 30 DEG C of addition 4g fatty alcohol polyoxyethylene ether sulfuric acid
Sodium and 2g montmorillonite after insulated and stirred 30min, obtain bamboo liquefied substance base adhesive.
(4) prepared by plate: timber powder is 24 hours dry in 45 DEG C, and measuring its moisture content is 8%, weighs 100g drying
Timber powder and 12g bamboo liquefied substance base adhesive be added high-speed mixer in be uniformly mixed, be added mold in 120 DEG C,
Hot pressing 10min is 38MPa, impact strength 22MPa up to required plate, the tensile strength of plate under 8MPa.
Embodiment 2
(1) bamboo particle pretreatment: 10g bamboo wood crushed material and 150g deionized water are placed in there-necked flask, in 80 DEG C digestion 10 hours
Afterwards, it filters, then 180g mass ratio is used to extract 20 hours for the mixed solvent of the ethyl acetate-isopropanol of 1:1.8 in 80 DEG C, mistake
It filters, the pretreated bamboo wood powder of 9.0g is obtained after filtration cakes torrefaction.
(2) bamboo liquefied: by bamboo wood powder, 22.5g phenol and 0.45g catalyst pretreated obtained by 3g step (1)
BF3 is added in there-necked flask, is stirred to react 5 hours in 110 DEG C, the pretreated bamboo wood powder of remaining 6g is during which added in three batches
End is filtered while hot after reaction, obtains filtrate 18.3g, as bamboo liquefied substance.
(3) prepared by adhesive: 10g bamboo liquefied substance being added in there-necked flask, adjusts its PH using 20%NaOH- aqueous solution
It is 8.5,37% formalin of 15g is added, after 90 DEG C are reacted 5 hours, is cooled to 35 DEG C of addition 3g dodecyl sodium sulfates
With 1g montmorillonite, after insulated and stirred 20min, bamboo liquefied substance base adhesive is obtained.
(4) prepared by plate: timber powder is 24 hours dry in 50 DEG C, and measuring its moisture content is 7%, weighs 100g drying
Timber powder and 20g bamboo liquefied substance base adhesive be added high-speed mixer in be uniformly mixed, be added mold in 150 DEG C,
Hot pressing 15min is 41MPa, impact strength 20MPa up to required plate, the tensile strength of plate under 4MPa.
Embodiment 3
(1)) bamboo particle pretreatment: 10g bamboo wood crushed material and 200g deionized water are placed in there-necked flask, in 85 DEG C digestion 9 hours
Afterwards, it filters, then 270g mass ratio is used to extract 12 hours for the mixed solvent of the ethyl acetate-isopropanol of 1:2 in 85 DEG C, mistake
It filters, the pretreated bamboo wood powder of 9.0g is obtained after filtration cakes torrefaction；
(2)) bamboo liquefied: bamboo wood powder, 27g phenol and 1.08g catalyst BF3 pretreated obtained by 3g step (1) are added
Enter in there-necked flask, be stirred to react in 120 DEG C 4 hours, the pretreated bamboo wood powder of remaining 6g is during which added in three batches, reacts
After filter while hot, obtain filtrate 19.2g, as bamboo liquefied substance.
(3) prepared by adhesive: 10g bamboo liquefied substance being added in there-necked flask, adjusts its PH using 20%NaOH- aqueous solution
It is 9,37% formalin of 16g is added, after 85 DEG C are reacted 4 hours, is cooled to 40 DEG C of addition 5g Monododecylphosphates
Potassium and 3g montmorillonite after insulated and stirred 40min, obtain bamboo liquefied substance base adhesive, and product viscosity is 1090mPa at 25 DEG C
S, curing time 62S, product is used in laminated wood product, and detection is carried out according to IG/T 3026-1995 standard, glue
Conjunction intensity is 2.46MPa.
(4) prepared by plate: timber powder is 24 hours dry in 50 DEG C, and measuring its moisture content is 7.2%, weighs 100g baking
Dry timber powder and 26g bamboo liquefied substance base adhesive, which are added in high-speed mixer, to be uniformly mixed, and is added in mold in 140
DEG C, hot pressing 8min up to required plate, the tensile strength of plate is 35MPa, impact strength 23MPa under 6MPa.
Comparative example 1
(1) bamboo liquefied: 3g bamboo wood powder, 18g phenol and 0.9g catalyst BF3 are added in there-necked flask, anti-in 100 DEG C of stirrings
It answers 6 hours, the pretreated bamboo wood powder of remaining 6g is during which added in three batches, filters while hot after reaction, obtains filtrate
13.8g, as bamboo liquefied substance；.
(2) prepared by adhesive: 10g bamboo liquefied substance being added in there-necked flask, adjusts its PH using 20%NaOH- aqueous solution
It is 9,37% formalin of 16g is added, after 85 DEG C are reacted 4 hours, is cooled to 40 DEG C of addition 5g Monododecylphosphates
Potassium and 3g montmorillonite after insulated and stirred 40min, obtain bamboo liquefied substance base adhesive, and product viscosity is 820mPa at 25 DEG C
S, curing time 78S, product is used in laminated wood product, and detection is carried out according to IG/T 3026-1995 standard, glued strong
Degree is 1.53MPa.
(3) prepared by plate: timber powder is 24 hours dry in 45 DEG C, and measuring its moisture content is 8%, weighs 100g drying
Timber powder and 12g bamboo liquefied substance base adhesive be added high-speed mixer in be uniformly mixed, be added mold in 120 DEG C,
Hot pressing 10min is 22MPa, impact strength 15MPa up to required plate, the tensile strength of plate under 8MPa.
Pass through comparative example 1 and comparative example 1, it can be deduced that: after pretreatment, the stretching of obtained plate is strong for bamboo wood
Degree and impact strength are more preferably.
Comparative example 2
Plate preparation: timber powder is 24 hours dry in 45 DEG C, and measuring its moisture content is 8%, weighs the timber of 100g drying
Powder and 12g synvaren, which are added in high-speed mixer, to be uniformly mixed, and the hot pressing under 120 DEG C, 8MPa in mold is added
10min is 26MPa, impact strength 14MPa up to required plate, the tensile strength of plate.
Pass through comparative example 1 and comparative example 2, it can be deduced that: bamboo liquefied substance base adhesive institute's panel is than phenolic aldehyde tree
Rouge adhesive institute's panel has better tensile strength and impact strength.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (10)
1. a kind of method for preparing plate using wood waste, which is characterized in that the preparation method includes the following steps:
(1)) bamboo particle pretreatment: by bamboo wood crushed material using hot water in 80-90 DEG C after digestion 8-10 hour, filtering, then using second
Acetoacetic ester-isopropanol mixed solvent in 70-85 DEG C extracting 12-24 hours, filtering, after filtration cakes torrefaction pretreated bamboo wood
Powder；
(2)) reaction bamboo liquefied: is added in bamboo wood powder pretreated obtained by part steps (1), phenol and catalyst BF3
It in container, is stirred to react in 100-120 DEG C 4-6 hours, remaining pretreated bamboo wood powder is during which added portionwise, reaction terminates
It filters while hot afterwards, filtrate is bamboo liquefied substance；
(3)) prepared by adhesive: bamboo liquefied substance obtained by step (2) being added in reaction vessel, NaOH is used to adjust its PH as 8-
9,37% formalin is added, after reaction 4-6 hours, is cooled to 30-40 DEG C of addition surfactant and Meng Tuo in 80-95 DEG C
Soil after insulated and stirred 20-40min, obtains bamboo liquefied substance base adhesive；
(4)) prepared by plate: the timber powder that low temperature drying is crossed is mixed with bamboo liquefied substance base adhesive obtained by step (3)
It is even, hot pressing in mold is added and forms up to required plate.
2. the method for preparing plate using wood waste as described in claim 1, which is characterized in that bamboo described in step (1)
The mass ratio of material crushed material and hot water is 1:10-20.
3. the method for preparing plate using wood waste as described in claim 1, which is characterized in that mixed described in step (1)
The dosage of bonding solvent is 15-20 times of bamboo wood crushed material quality.
4. the method as claimed in claim 1 or 3 for preparing plate using wood waste, which is characterized in that described in step (1)
The mass ratio of in the mixed solvent ethyl acetate and isopropanol is 1:1.5-2.
5. the method for preparing plate using wood waste as described in claim 1, which is characterized in that pre- described in step (2)
The mass ratio of processed bamboo wood powder, phenol and catalyst is 1:2-3:0.05-0.12.
6. the method for preparing plate using wood waste as described in claim 1, which is characterized in that bamboo described in step (3)
Material liquefied substance, 37% formalin, surfactant and the mass ratio of montmorillonite are 1:1.2-1.6:0.03-0.05:0.1-
0.3。
7. the method for preparing plate using wood waste as described in claim 1, which is characterized in that table described in step (3)
Face activating agent is sodium sulfate of polyethenoxy ether of fatty alcohol, dodecyl sodium sulfate or Monododecylphosphate potassium.
8. the method for preparing plate using wood waste as described in claim 1, which is characterized in that wood described in step (4)
The mass ratio of material powder and bamboo liquefied substance base adhesive is 1:0.12-0.26.
9. the method for preparing plate using wood waste as described in claim 1, which is characterized in that heat described in step (4)
The temperature of pressure is 120-150 DEG C, pressure 4-8MPa, hot pressing time 8-15min.
10. the method for preparing plate using wood waste as described in claim 1, which is characterized in that low described in step (4)
Timber powder moisture content≤8% that temperature was dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811363407.5A CN109366657A (en) | 2018-11-16 | 2018-11-16 | A method of plate is prepared using wood waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811363407.5A CN109366657A (en) | 2018-11-16 | 2018-11-16 | A method of plate is prepared using wood waste |
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| CN109366657A true CN109366657A (en) | 2019-02-22 |
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ID=65388962
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| CN201811363407.5A Pending CN109366657A (en) | 2018-11-16 | 2018-11-16 | A method of plate is prepared using wood waste |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0397759A (en) * | 1989-09-11 | 1991-04-23 | Takeshi Yamashita | Production of composite material consisting essentially of wood flake, and production device for the same product and wood flake |
| CN106047241A (en) * | 2016-07-15 | 2016-10-26 | 安吉威龙塑木环保材料有限公司 | Method for preparing board by virtue of wood waste |
-
2018
- 2018-11-16 CN CN201811363407.5A patent/CN109366657A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0397759A (en) * | 1989-09-11 | 1991-04-23 | Takeshi Yamashita | Production of composite material consisting essentially of wood flake, and production device for the same product and wood flake |
| CN106047241A (en) * | 2016-07-15 | 2016-10-26 | 安吉威龙塑木环保材料有限公司 | Method for preparing board by virtue of wood waste |
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Application publication date: 20190222 |