CN108748503A - A method of extending the fast growing wood outdoor application time limit - Google Patents
A method of extending the fast growing wood outdoor application time limit Download PDFInfo
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- CN108748503A CN108748503A CN201810598117.2A CN201810598117A CN108748503A CN 108748503 A CN108748503 A CN 108748503A CN 201810598117 A CN201810598117 A CN 201810598117A CN 108748503 A CN108748503 A CN 108748503A
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- fast growing
- growing wood
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- application time
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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
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/0207—Pretreatment of wood before impregnation
- B27K3/0214—Drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/04—Impregnating in open tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
Abstract
The present invention relates to wood materials to handle industrial field,Disclose a kind of method extending the fast growing wood outdoor application time limit,In such a way that fast growing wood and inorganic material are compound,The inorganic material being prepared can be present in such a way that physics is filled in timber capillary,It is bonded with cellulose,Further with hydroxyl,The groups such as carboxyl form firm combination,Constitute the skeleton of cell wall,Its mechanical property,Dimensional stability,Anti-flammability and corrosion resistance are obtained for raising,Form the high composite material of comprehensive performance,Improve fast growing wood exterior durability,The present invention provides a new direction for the development of fast growing wood,Make fast growing wood from rudimentary to advanced,Develop from single function to multi-functional direction,Realize that high value utilizes,The composite wooden material of superior performance is prepared,Preparation process is easy to operate,It is efficient,With easy to operate,Securely and reliably,The advantages that maintaining long lifespan,It is a kind of technical solution being extremely worth of widely use.
Description
Technical field
The invention belongs to wood materials processing industrial technology fields, and in particular to a kind of extension fast growing wood outdoor application year
The method of limit.
Background technology
Fast-growing wood species refer to growth fast, morning of becoming a useful person, the period of felling in turn short trees kind, and China common are deep gloomy Chinese scholartree, poplar
Tree, eucalyptus, willow etc..Its advantage is：General color and luster may be readily formed as various application colors than shallower, and deform it is small, it is dry to hold
Easily, light-weight, dimensional stability is relatively good, and contraction is small, and sound-absorbing effect is good, and elasticity is good, easy to process.How key answers if also residing in
With, how to be atoned for one's shortcomings by designing, enhancing strong point.Its disadvantage is：Material is loose, and voidage is big, and density is low, therefore mechanics
It is all low with mechanical strength.It is a kind of aiphyllium, distribution is wide, and growth is fast if China fir is as the distinctive main timber tree species in south.
China fir processing performance is good, corrosion resistant, resistance to insect pest, and texture color and luster is beautiful, but China fir fast-growing material is poor, short texture and extremely uneven,
Intensity, hardness are low, not wear-resisting, easy to moisture absorption, and physics and mechanical strength are all relatively low, and therefore, fast growing wood is all mainly all the time
Wood-based plate is done, packaging material, building template etc. are done in papermaking, and less do furniture, especially top-grade furniture.
After fast growing wood is processed into corresponding woodwork, it is desirable to improve its service life it is necessary to be modified processing to it,
Protective filmy layer can only be formed in wood surface after existing chemical reagent modification, can not fundamentally improve timber
Comprehensive performance, outdoor environment variation under, corrosivity is serious, and mechanical properties decrease is fast, dimensional stability significantly reduce.It is unfavorable
Sustainable development in fast growing wood and utilization.
Invention content
The purpose of the present invention is for existing problem, provide a kind of side extending the fast growing wood outdoor application time limit
Method makes fast growing wood from rudimentary to advanced, develops from single function to multi-functional direction, realizes that high value utilizes.
The present invention is achieved by the following technical solutions：
A method of extending the fast growing wood outdoor application time limit, includes the following steps：
（1）Adult fast growing wood is processed into plank, it is 10-12 hours dry at 55-60 DEG C, it is subsequently placed in the modifying agent of preparation
Middle immersion 3-4 hours, soaking temperature are 38-40 DEG C, and immersion is placed in 120-125 DEG C of baking oven and dries, the modifying agent according to
Parts by weight meter is made of following component：15-20 parts of sodium chloride, 8-10 parts of polyvinyl alcohol, 6-8 parts of lauric acid, quaternary ammonium salt surface are lived
4-5 parts of agent of property, 700-750 parts of water；
（2）According to mass ratio it is 3-4 by kaolin and montmorillonite:The ratio of 1-2 mixes, and is crushed to 50-80 microns of particle, adds
Water is configured to the aqueous dispersion that mass concentration is 5.5-6.0%, and the sea that mass fraction accounts for dispersion 0.012-0.014% is added
Mosanom is disperseed 12-15 hours using magnetic stirrer aquation, then by dispersion in supercentrifuge at centrifugation
Reason 15-20 minutes collects centrifuge tube top suspension；
（3）Silica hydrogel is added in the suspension obtained to collection, stirs 30-40 minutes, will stir at 50-60 DEG C
Slurries are placed in quartzy carbonized tube, are warming up to 80-90 DEG C, are passed through nitrogen and carbon dioxide gas mixture, are reacted 45-55 minutes,
Obtained slurries are adjusted to pH value using sodium hydroxide solution in 9.8-10.0 ranges, by step（1）Plank after drying is set
It vacuum impregnation 15-18 hours in the alkalies, is then transferred in hydrothermal reaction kettle, it is small that 10-12 is heated at 75-80 DEG C
When, take out wooden unit after natural cooling, be rinsed with water it is clean be placed in 60-70 DEG C of vacuum drying chamber it is 30-36 hours dry.
It is further described as to said program, step（2）The centrifugal speed is 3200-3400 revs/min.
It is further described as to said program, step（3）The silica hydrogel additive amount is suspension matter
The 8-10% of amount, silica particle size is between 1-10 microns.
It is further described as to said program, step（3）The nitrogen is with carbon dioxide gas mixture volume ratio
7-8:1.0-1.5。
It is further described as to said program, step（3）The sodium hydroxide solution molar concentration is rubbed for 1.6-1.8
You/liter.
It is further described as to said program, step（3）Solid-liquid ratio is 1 in the vacuum impregnation:1.2-1.3.
The present invention has the following advantages compared with prior art：In order to solve the problems, such as that existing fast growing wood exterior durability is poor, this
Invention provides a kind of method extending the fast growing wood outdoor application time limit, using fast growing wood and the compound side of inorganic material
Formula, the inorganic material being prepared can be present in timber capillary in such a way that physics is filled, be bonded with cellulose,
Further form firm combination with groups such as hydroxyl, carboxyls, constitute the skeleton of cell wall, mechanical property, dimensional stability,
Anti-flammability and corrosion resistance are obtained for raising, form the high composite material of comprehensive performance, improve outside fast growing wood room
Durability, the present invention provide a new direction for the development of fast growing wood, make fast growing wood from rudimentary to advanced, from single work(
It can develop to multi-functional direction, realize that high value utilizes, the composite wooden material of superior performance, preparation process behaviour is prepared
Make it is simple, it is efficient, have it is easy to operate, it is securely and reliably, the advantages that maintaining long lifespan, a kind of to be extremely worth of widely use
Technical solution.
Specific implementation mode
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, with reference to specific embodiment to this hair
It is bright to be described further, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, is not used to limit
Technical solution provided by the present invention.
Embodiment 1
A method of extending the fast growing wood outdoor application time limit, includes the following steps：
（1）Adult fast growing wood is processed into plank, it is 10 hours dry at 55 DEG C, it is subsequently placed in the modifying agent of preparation and impregnates
3 hours, soaking temperature was 38 DEG C, and immersion is placed in 120 DEG C of baking ovens and dries, the modifying agent in parts by weight by below at
Divide and is made：15 parts of sodium chloride, 8 parts of polyvinyl alcohol, 6 parts of lauric acid, 4 parts of quaternary surfactant, 700 parts of water；
（2）According to mass ratio it is 3 by kaolin and montmorillonite:1 ratio mixing, is crushed to 50 microns of particle, water is added to prepare
The aqueous dispersion for being 5.5% at mass concentration is added the sodium alginate that mass fraction accounts for dispersion 0.012%, uses magnetic force
Blender, which stirs aquation, to be disperseed 12 hours, then centrifugal treating 15 minutes, collection centrifugation in supercentrifuge by dispersion
Pipe top suspension；
（3）Silica hydrogel is added in the suspension obtained to collection, is stirred 30 minutes at 50 DEG C, stirring slurries are set
In quartzy carbonized tube, 80 DEG C are warming up to, is passed through nitrogen and carbon dioxide gas mixture, is reacted 45 minutes, the slurries that will be obtained
It is adjusted to pH value in 9.8-10.0 ranges, by step using sodium hydroxide solution（1）Plank after drying is placed in the alkalies
Vacuum impregnation 15 hours, is then transferred in hydrothermal reaction kettle, is heated 10 hours at 75 DEG C, wooden unit is taken out after natural cooling,
It is rinsed with water and is totally placed on drying 30 hours in 60 DEG C of vacuum drying chambers.
It is further described as to said program, step（2）The centrifugal speed is 3200 revs/min.
It is further described as to said program, step（3）The silica hydrogel additive amount is suspension matter
The 8% of amount, silica particle size is between 1-10 microns.
It is further described as to said program, step（3）The nitrogen is with carbon dioxide gas mixture volume ratio
7:1.0。
It is further described as to said program, step（2）The sodium hydroxide solution molar concentration be 1.6 moles/
It rises.
It is further described as to said program, step（3）Solid-liquid ratio is 1 in the vacuum impregnation:1.2.
Embodiment 2
A method of extending the fast growing wood outdoor application time limit, includes the following steps：
（1）Adult fast growing wood is processed into plank, it is 11 hours dry at 58 DEG C, it is subsequently placed in the modifying agent of preparation and impregnates
3.5 hours, soaking temperature was 39 DEG C, and immersion, which is placed in 122 DEG C of baking ovens, dries, and the modifying agent is in parts by weight by following
Ingredient is made：18 parts of sodium chloride, 9 parts of polyvinyl alcohol, 7 parts of lauric acid, 4.5 parts of quaternary surfactant, 720 parts of water；
（2）According to mass ratio it is 3.5 by kaolin and montmorillonite:1.5 ratio mixing, is crushed to 60 microns of particle, adds water
It is configured to the aqueous dispersion that mass concentration is 5.8%, the sodium alginate that mass fraction accounts for dispersion 0.013% is added, uses
Magnetic stirrer aquation is disperseed 13 hours, then centrifugal treating 18 minutes, collection in supercentrifuge by dispersion
Centrifuge tube top suspension；
（3）Silica hydrogel is added in the suspension obtained to collection, is stirred 35 minutes at 55 DEG C, stirring slurries are set
In quartzy carbonized tube, 85 DEG C are warming up to, is passed through nitrogen and carbon dioxide gas mixture, is reacted 50 minutes, the slurries that will be obtained
It is adjusted to pH value in 9.8-10.0 ranges, by step using sodium hydroxide solution（1）Plank after drying is placed in the alkalies
Vacuum impregnation 16 hours, is then transferred in hydrothermal reaction kettle, is heated 11 hours at 78 DEG C, wooden unit is taken out after natural cooling,
It is rinsed with water and is totally placed on drying 33 hours in 65 DEG C of vacuum drying chambers.
It is further described as to said program, step（2）The centrifugal speed is 3300 revs/min.
It is further described as to said program, step（3）The silica hydrogel additive amount is suspension matter
The 9% of amount, silica particle size is between 1-10 microns.
It is further described as to said program, step（3）The nitrogen is with carbon dioxide gas mixture volume ratio
7.5:1.3。
It is further described as to said program, step（3）The sodium hydroxide solution molar concentration be 1.7 moles/
It rises.
It is further described as to said program, step（3）Solid-liquid ratio is 1 in the vacuum impregnation:1.25.
Embodiment 3
A method of extending the fast growing wood outdoor application time limit, includes the following steps：
（1）Adult fast growing wood is processed into plank, it is 12 hours dry at 60 DEG C, it is subsequently placed in the modifying agent of preparation and impregnates
4 hours, soaking temperature was 40 DEG C, and immersion is placed in 125 DEG C of baking ovens and dries, the modifying agent in parts by weight by below at
Divide and is made：20 parts of sodium chloride, 10 parts of polyvinyl alcohol, 8 parts of lauric acid, 5 parts of quaternary surfactant, 750 parts of water；
（2）According to mass ratio it is 4 by kaolin and montmorillonite:2 ratio mixing, is crushed to 80 microns of particle, water is added to prepare
The aqueous dispersion for being 6.0% at mass concentration is added the sodium alginate that mass fraction accounts for dispersion 0.014%, uses magnetic force
Blender, which stirs aquation, to be disperseed 15 hours, then centrifugal treating 20 minutes, collection centrifugation in supercentrifuge by dispersion
Pipe top suspension；
（3）Silica hydrogel is added in the suspension obtained to collection, is stirred 40 minutes at 60 DEG C, stirring slurries are set
In quartzy carbonized tube, 90 DEG C are warming up to, is passed through nitrogen and carbon dioxide gas mixture, is reacted 55 minutes, the slurries that will be obtained
It is adjusted to pH value in 9.8-10.0 ranges, by step using sodium hydroxide solution（1）Plank after drying is placed in the alkalies
Vacuum impregnation 18 hours, is then transferred in hydrothermal reaction kettle, is heated 12 hours at 80 DEG C, wooden unit is taken out after natural cooling,
It is rinsed with water and is totally placed on drying 36 hours in 70 DEG C of vacuum drying chambers.
It is further described as to said program, step（2）The centrifugal speed is 3400 revs/min.
It is further described as to said program, step（3）The silica hydrogel additive amount is suspension matter
The 10% of amount, silica particle size is between 1-10 microns.
It is further described as to said program, step（3）The nitrogen is with carbon dioxide gas mixture volume ratio
8:1.5。
It is further described as to said program, step（3）The sodium hydroxide solution molar concentration be 1.8 moles/
It rises.
It is further described as to said program, step（3）Solid-liquid ratio is 1 in the vacuum impregnation:1.3.
Comparative example 1
With differing only in for embodiment 1, step is omitted（1）The use of middle modification liquid, remaining is consistent.
Comparative example 2
With differing only in for embodiment 2, step（2）Middle kaolin and montmorillonite are 1 according to mass ratio:3 ratio mixing,
It is remaining to be consistent.
Comparative example 3
With differing only in for embodiment 3, step（2）The middle addition for omitting sodium alginate, remaining is consistent.
Comparative example 4
With differing only in for embodiment 3, step（3）The middle addition for omitting silica dioxide gel, remaining is consistent.
Comparative example 5
With differing only in for embodiment 3, step is omitted（3）Middle hydrothermal reaction process, remaining is consistent.
Contrast experiment
The method for using embodiment 1-3 and comparative example 1-5 respectively extends the fast growing wood outdoor application time limit, while with mass concentration
Impregnate 18 hours processing methods for 5% montmorillonite aqua liquid and wood vacuum and be set as control group, at the same setting do not do it is any
The blank control group of processing respectively tests identical willow plank, keeps irrelevant variable consistent in experiment, to being prepared into
To composite wood performance measure statistics, the results are shown in table below：
（Testing standard involved in experiment includes：GB/T 1394.1-2009；National standard GB 1933-91；GB/T 15780-
1995.）
The present invention provides a new direction for the development of fast growing wood, makes fast growing wood from rudimentary to advanced, from single function
Develop to multi-functional direction, realize that high value utilizes, the composite wooden material of superior performance, preparation process operation is prepared
Simply, efficient, have it is easy to operate, securely and reliably, maintain long lifespan the advantages that, be a kind of skill being extremely worth of widely use
Art scheme.
Claims (6)
1. a kind of method extending the fast growing wood outdoor application time limit, which is characterized in that include the following steps：
（1）Adult fast growing wood is processed into plank, it is 10-12 hours dry at 55-60 DEG C, it is subsequently placed in the modifying agent of preparation
Middle immersion 3-4 hours, soaking temperature are 38-40 DEG C, and immersion is placed in 120-125 DEG C of baking oven and dries, the modifying agent according to
Parts by weight meter is made of following component：15-20 parts of sodium chloride, 8-10 parts of polyvinyl alcohol, 6-8 parts of lauric acid, quaternary ammonium salt surface are lived
4-5 parts of agent of property, 700-750 parts of water；
（2）According to mass ratio it is 3-4 by kaolin and montmorillonite:The ratio of 1-2 mixes, and is crushed to 50-80 microns of particle, adds
Water is configured to the aqueous dispersion that mass concentration is 5.5-6.0%, and the sea that mass fraction accounts for dispersion 0.012-0.014% is added
Mosanom is disperseed 12-15 hours using magnetic stirrer aquation, then by dispersion in supercentrifuge at centrifugation
Reason 15-20 minutes collects centrifuge tube top suspension；
（3）Silica hydrogel is added in the suspension obtained to collection, stirs 30-40 minutes, will stir at 50-60 DEG C
Slurries are placed in quartzy carbonized tube, are warming up to 80-90 DEG C, are passed through nitrogen and carbon dioxide gas mixture, are reacted 45-55 minutes,
Obtained slurries are adjusted to pH value using sodium hydroxide solution in 9.8-10.0 ranges, by step（1）Plank after drying is set
It vacuum impregnation 15-18 hours in the alkalies, is then transferred in hydrothermal reaction kettle, it is small that 10-12 is heated at 75-80 DEG C
When, take out wooden unit after natural cooling, be rinsed with water it is clean be placed in 60-70 DEG C of vacuum drying chamber it is 30-36 hours dry.
2. a kind of method extending the fast growing wood outdoor application time limit as described in claim 1, which is characterized in that step（2）Institute
It is 3200-3400 revs/min to state centrifugal speed.
3. a kind of method extending the fast growing wood outdoor application time limit as described in claim 1, which is characterized in that step（3）Institute
The 8-10% that silica hydrogel additive amount is suspension quality is stated, silica particle size is between 1-10 microns.
4. a kind of method extending the fast growing wood outdoor application time limit as described in claim 1, which is characterized in that step（3）Institute
It is 7-8 that nitrogen, which is stated, with carbon dioxide gas mixture volume ratio:1.0-1.5.
5. a kind of method extending the fast growing wood outdoor application time limit as described in claim 1, which is characterized in that step（3）Institute
It is 1.6-1.8 mol/Ls to state sodium hydroxide solution molar concentration.
6. a kind of method extending the fast growing wood outdoor application time limit as described in claim 1, which is characterized in that step（3）Institute
It is 1 to state solid-liquid ratio in vacuum impregnation:1.2-1.3.
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