CN104985657B - Enhanced high-temperature heat treated wood and manufacturing method thereof - Google Patents
Enhanced high-temperature heat treated wood and manufacturing method thereof Download PDFInfo
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- CN104985657B CN104985657B CN201510389711.7A CN201510389711A CN104985657B CN 104985657 B CN104985657 B CN 104985657B CN 201510389711 A CN201510389711 A CN 201510389711A CN 104985657 B CN104985657 B CN 104985657B
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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
- 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
- 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
- B27K1/00—Damping wood
-
- 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
- B27K3/34—Organic impregnating agents
-
- 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
- B27K3/34—Organic impregnating agents
- B27K3/38—Aromatic 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
- B27K5/04—Combined bleaching or impregnating and drying of wood
Abstract
The invention discloses enhanced high-temperature heat treated wood and a manufacturing method thereof. The manufacturing method comprises the following steps that 1, high-temperature heat treatment is performed, wherein man-made forest wood serves as raw materials, and high-temperature heat treatment is performed on the man-made forest wood to obtain heat treated wood; 2, impregnation enhancing treatment is performed, wherein the heat treated wood obtained by the step 1 is impregnated in resin adhesives to obtain impregnated wood; 3, solidification forming treatment is performed, wherein solidification forming treatment is performed on the impregnated wood obtained by the step 2 to obtain the enhanced high-temperature heat treated wood. According to the manufacturing method, not only can the mechanical properties of the wood be improved, but also the size stability of the wood can be improved, green and environmental protection are achieved, and the prepared enhanced high-temperature heat treated wood takes the man-made forest wood as the raw materials and is high in mechanical strength and good in size stability.
Description
Technical field
The invention belongs to the lumber functionality improvement category of wood processing field, and in particular at a kind of high warm of enhancement mode
Reason timber and its manufacture method.
Background technology
The ultimate principle of heat_treated wood mainly uses 160-260 DEG C of temperature conditionss to treating of wood certain hour,
There is pyrolysis and molecular structure restructuring in wood cell wall material, wood components occur permanent chemical and change, and inhale process timber
Moist reduction, dimensional stability, weatherability are improved, so as to be applied to outdoor flooring, outdoor decoration wallboard, garden furniture, paling
Hurdle etc., on the other hand, heat_treated wood can cause mechanical intensity of wood to reduce and weight saving again, become its major defect.
The commercial applications of heat_treated wood technology mainly start from European countries, but in the last few years domestic heat treatment technics and
Commercialization popularization and application are obviously improved, heat treatment technics or the progressive maturation of technique.Because of domestic wildwood resource critical shortage, portion
Point wood processing enterprise starts that sight is turned to the exploitation of resourceful artificial forest fast growing wood, but artificial forest wood because
Fast growth causes that density is relatively low, strength grade is poor, dimensional stability is low, although can to improve its size steady for heat treatment technics
It is qualitative, but strength of wood can be reduced further if directly heat treatment being carried out to it, it is impossible to use requirement is met well.For
Artificial forest wood density is low, intensity difference, should not be directly used in the modified problem of heat treatment, has expedited the emergence of heat_treated wood with chemistry increasing
At the integrated technique that strong modification technology or heat treatment are modified with the technical tie-up of physics enhancing modified, such as resin dipping enhancing-heat
Reason integrated technique, heat treatment-compression strengthens integrated technique.For the former, there be substantially intensity after timber Jing resins dipping
Strengthen, but follow-up heat treatment can to a certain extent cause efficiency lost resin, material fragility increases, partial destruction has been obtained
Reinforced effects；For the latter, timber carries out plasticity after heat treatment substantially to be reduced, and is significantly increased subsequently through enhanced difficulty is compressed
Plus, and compression processes the loss that not only can cause wood volume to a certain extent, also there are problems that the resilience after compression process.
Artificial forest fast growing wood enriches very much in china natural resources, and by the modification of more science, reasonable is efficiently sharp
The problems such as with method to solve its intensity and dimensional stability, for added value of product is improved, its application is widened, alleviate day
So have very important significance the problems such as woods resource critical shortage.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, there is provided it is strong that one kind can improve timber mechanics
Degree can improve the manufacture method of the enhancement mode high-temperature thermal treatment timber of wood dimensional stability and environmental protection again, also provide a kind of
With artificial forest wood as raw material, the enhancement mode high-temperature heat treatment wood of mechanical strength high, excellent in dimensional stability and environmental protection
Material.
To solve above-mentioned technical problem, the present invention is employed the following technical solutions：
A kind of manufacture method of enhancement mode high-temperature thermal treatment timber, comprises the following steps：
1）High-temperature heat treatment：With artificial forest wood as raw material, high-temperature heat treatment is carried out to artificial forest wood, obtain heat treatment
Material；
2）Dipping enhancement process：By step 1）Gained heat-treated wood impregnated in Resin adhesive, obtain impreg；
3）Solidifying and setting process：By step 2）Gained impreg carries out solidifying and setting process, obtains enhancement mode high-temperature heat treatment
Timber.
In above-mentioned manufacture method, it is preferred that the step 1）High-temperature heat treatment comprise the steps：
1.1）Primary drying：Artificial forest wood is placed in high-temperature heat treatment tank, first with the intensification of 15 DEG C/h~20 DEG C/h
Ramp is warming up to 130 DEG C to 100 DEG C, then with the heating rate of 5 DEG C/h~10 DEG C/h, is incubated 1h~5h；
1.2）Insulation heat treatment：Timber after primary drying is warming up to into 160 DEG C~260 DEG C by 130 DEG C, heating rate is
10 DEG C/h~15 DEG C/h, temperature retention time is 1h~4h, and the oxygen content of timber is controlled in the range of≤2%；
1.3）Cooling damping：Timber after insulation heat treatment is carried out into steam-injection process, temperature drop in high-temperature heat treatment tank is treated
During to 100 DEG C, stop steam-injection and process, after Wood temperature is down to room temperature tank is gone out, obtain heat-treated wood.
In above-mentioned manufacture method, it is preferred that the step 2）Dipping enhancement process comprise the steps：
2.1）Evacuation：By step 1）Gained heat-treated wood is placed in impregnating autoclave and carries out evacuation process, and vacuum is
0.06MPa~0.095MPa, the dwell time is 0.25h~1h；
2.2）Impregnating by pressure：Resin adhesive is added into impregnating autoclave, the heat-treated wood after evacuation process is carried out adding
Pressure impregnation process, impregnation pressure is 0.5MPa~2.5MPa, and dip time is 30min~120min；
2.3）Redrying：Heat-treated wood after impregnating by pressure is carried out into redrying, to final moisture content be 10%~
15%, obtain impreg.
In above-mentioned manufacture method, it is preferred that the step 3）Solidifying and setting process comprise the steps：
3.1）Curing molding：By step 2）Gained impreg is placed in high-temperature heat treatment tank, with the liter of 5 DEG C/h~10 DEG C/h
Warm ramp is incubated 6h~12h to 105 DEG C~130 DEG C；
3.2）Cooling damping：Steam-injection conditioning is carried out to the impreg after curing molding, to final moisture content be 5%~
8%, obtain enhancement mode high-temperature thermal treatment timber.
In above-mentioned manufacture method, it is preferred that the manufacture method also includes Balance Treatment, concretely comprises the following steps：By step
3）Mi Dui displays 14 days~30 days in gained enhancement mode high-temperature thermal treatment timber environment disposed within.
In above-mentioned manufacture method, it is preferred that the Resin adhesive be low-molecular-weight resin adhesive, the low molecule
The solid content of amount Resin adhesive is 35%~50%, the dynamic viscosity of the low-molecular-weight resin adhesive be 10MPas~
20MPa·s.（Low-molecular-weight refers to the meansigma methodss of viscosity-average molecular weight substantially in 300~500 in the present invention）.
In above-mentioned manufacture method, it is preferred that the low-molecular-weight resin adhesive includes urea-formaldehyde resin adhesive or water
Dissolubility phenolic resin adhesive.
In above-mentioned manufacture method, it is preferred that the artificial forest wood is artificial forest quick growth poplar wood or artificial forest fast-growing China fir
Wood；The first moisture content of the artificial forest wood is 12%~20%.
Used as a total technology design, the present invention also provides enhancement mode obtained in a kind of above-mentioned manufacture method high warm
Process timber.
In above-mentioned enhancement mode high-temperature thermal treatment timber, it is preferred that the density of the enhancement mode high-temperature thermal treatment timber is
0.55g/cm3~0.7g/cm3；
The bending strength of the enhancement mode high-temperature thermal treatment timber is compared to the raw material, the step 1）The heat for obtaining
The bending strength for processing material is respectively increased 72.7%~90.9%, 84.2%~137.5%；
The Deflection Modulus of Elasticity of the enhancement mode high-temperature thermal treatment timber is compared to the raw material, the step 1）Obtain
The Deflection Modulus of Elasticity of heat-treated wood be respectively increased 51.7%~78.5%, 66.7%~112.5%；
The radial shrinkage rate of the enhancement mode high-temperature thermal treatment timber is reduced compared to the radial shrinkage rate of the raw material
33.3%~70%；
The Chordwise shrinkage of the enhancement mode high-temperature thermal treatment timber is reduced compared to the Chordwise shrinkage of the raw material
38.2%~65%；
The radial direction bulking factor of the enhancement mode high-temperature thermal treatment timber is reduced compared to the radial direction bulking factor of the raw material
25.3%~90.6%；
The tangential bulking factor of the enhancement mode high-temperature thermal treatment timber is reduced compared to the tangential bulking factor of the raw material
35.5%~90.7%.
In the present invention, redrying includes spontaneously drying and artificial drying.
Compared with prior art, it is an advantage of the current invention that：
（1）The manufacture method of the enhancement mode high-temperature thermal treatment timber of the present invention, its principle is to carry out high temperature to timber first
Heat treatment improves its dimensional stability to reduce its hygroscopicity, recycles low-molecular-weight resin to soak heat-treated wood
Stain enhancement process, to make up the negative effect that heat treatment is caused to mechanical strength, and further improves its dimensional stability, finally
Processed by the curing molding of uniform temperature, be fully cured resin and form stable chemical bonds with wood cell wall material
Without being lost in, and discharge free formaldehyde and the free-phenol that cure stage is not reacted completely so that process material safer
Environmental protection.
（2）The manufacture method of the present invention is compared to heat_treated wood technology, dipping enhancing-heat treatment technics, heat treatment-pressure
Contracting enhancement techniques etc., the heat treatment-dipping of the present invention strengthens integrated technique and solves heat-treated wood mechanical strength drop well
Deng problem, high-temperature heat treatment after first impregnating resin can also be avoided to cause the problem of efficiency lost resin, given full play to resin leaching
The enhanced treatment effect of stain, the mechanical strength of timber, dimensional stability are more excellent after process, and do not exist caused by physical compression
Resilience problem.
（3）The enhancement mode high-temperature thermal treatment timber of the present invention, with artificial forest wood as raw material, the manufacture method of the Jing present invention
Properties have clear improvement after process.Its density is about 0.55g/cm3~0.7g/cm3, compared to material（That is raw material）
Improve 57%~100%；Bending strength is compared to dipping-heat prepared by material, heat-treated wood, conventional dipping-heat treatment method
Process material and be respectively increased 72.7%~90.9%, 84.2%~137.5%, 14.1%~58.3%；Deflection Modulus of Elasticity is compared to element
Material, heat-treated wood, the dipping-heat-treated wood of conventional dipping-heat treatment method preparation be respectively increased 51.7%~78.5%,
66.7%~112.5%, 21.9%~63.4%；Radially, Chordwise shrinkage（Moist wood is to over dry）Respectively 33.3% is reduced than material~
70%th, 38.2%~65%；Radially, tangential bulking factor（Over dry is stable to absorbing water）Reduce 25.3%~90.6% than material respectively,
35.5%~90.7%.
Specific embodiment
Following with concrete preferred embodiment, the invention will be further described and explanation, but does not therefore limit this
The protection domain of invention.
Embodiment：
A kind of manufacture method of the enhancement mode high-temperature thermal treatment timber of the present invention, with artificial forest quick growth poplar wood as raw material,
Comprise the following steps：
1）High-temperature heat treatment：
1.1）Primary drying：The poplar that first moisture content is 12% is put in high-temperature heat treatment tank, is first quickly risen temperature
To 100 DEG C, heating rate is 15 DEG C/h, makes wood surface temperature and internal temperature reach unanimity；Again temperature plateau is risen to into 130
DEG C, heating rate is 10 DEG C/h, is incubated 5 hours, makes moisture content be decreased to about 0；
1.2）Insulation heat treatment：Poplar after primary drying is rapidly heated to 180 DEG C by 130 DEG C, heating rate is 15
DEG C/h, temperature retention time is 4h, and oxygen content control is in the range of less than or equal to 2%；
1.3）Cooling damping：After insulation heat treatment, firing equipment is closed, the poplar after insulation heat treatment is carried out at steam-injection
Reason, when temperature is down to 100 DEG C in high-temperature heat treatment tank, stops steam-injection and processes, until Wood temperature goes out tank when being down to room temperature, obtains
Heat-treated wood.
2）Dipping enhancement process：
2.1）Evacuation：By step 1.3）The heat-treated wood of gained is placed in impregnating autoclave, carries out evacuation process, vacuum
For 0.095MPa, the 5h of dwell time 0.；
2.2）Impregnating by pressure：After evacuation process, urea-formaldehyde resin adhesive, urea-formaldehyde resin adhesive are added into impregnating autoclave
Solid content be 35%, the dynamic viscosity of urea-formaldehyde resin adhesive is 13MPas, and the heat-treated wood after evacuation process is carried out
Impregnating by pressure process, impregnation pressure is 0.8MPa, and dip time is 120min, last slow pressure release, after obtaining impregnating by pressure
Heat-treated wood；
2.3）Redrying：Heat-treated wood after impregnating by pressure is placed in atmospheric environment, one section of moisture natural evaporation is made
Time, then artificial drying is carried out, it is 15% to final moisture content, obtain impreg.
3）Solidifying and setting process：
3.1）Curing molding：By step 2.3）The impreg of gained is placed in high-temperature heat treatment tank, with the intensification speed of 5 DEG C/h
Rate is steadily warming up to 105 DEG C, is incubated 12h, is fully cured resin, and discharges the free formaldehyde not reacted completely in resin；
3.2）Cooling damping：After curing molding terminates, steam-injection conditioning is carried out to the impreg after curing molding, to most
Whole moisture content obtains enhancement mode high-temperature thermal treatment timber in 6%.
4）Balance Treatment：By step 3）Mi Dui displays 14 in gained enhancement mode high-temperature thermal treatment timber environment disposed within
My god.
After testing, the enhancement mode high-temperature thermal treatment timber of the method manufacture of above-mentioned the present embodiment, density reaches 0.6g/cm3, phase
Than in raw material（That is material）Improve 71.4%；Bending strength is 100MPa, compared to raw material, step 1.3）The heat for obtaining
Process material, dipping-heat-treated wood prepared by conventional dipping-heat treatment method has been respectively increased 81.8%, 92.3%, 20.2%；Bending resistance
Elastic modelling quantity is 8800MPa, compared to raw material, step 1.3）Heat-treated wood, the conventional dipping-heat treatment method preparation for obtaining
Dipping-heat-treated wood be respectively increased 57.1%, 72.1%, 28.1%；Radial shrinkage rate, Chordwise shrinkage（Moist wood is to over dry）
Respectively 1.8%, 4.2%, 66.4%, 61.3% is reduced respectively compared to raw material；Radial direction bulking factor, tangential bulking factor（Over dry
It is stable to absorbing water）Respectively 0.8%, 2.1%, 73.3%, 73.1% is reduced respectively compared to raw material.
The enhancement mode high-temperature thermal treatment timber of the present embodiment manufacture, mechanical strength and excellent in dimensional stability, can extensively use
In fields such as outdoor flooring, outdoor decoration structural woods.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example.All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It is noted that for the art
Those of ordinary skill for, improvements and modifications under the premise without departing from the principles of the invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of manufacture method of enhancement mode high-temperature thermal treatment timber, comprises the following steps：
1）High-temperature heat treatment：With artificial forest wood as raw material, high-temperature heat treatment is carried out to artificial forest wood, obtain heat-treated wood；
2）Dipping enhancement process：By step 1）Gained heat-treated wood impregnated in Resin adhesive, obtain impreg；
3）Solidifying and setting process：By step 2）Gained impreg carries out solidifying and setting process, obtains enhancement mode high-temperature thermal treatment timber；
The step 1）High-temperature heat treatment comprise the steps：
1.1）Primary drying：Artificial forest wood is placed in high-temperature heat treatment tank, first with the heating rate of 15 DEG C/h~20 DEG C/h
100 DEG C are warming up to, then 130 DEG C are warming up to the heating rate of 5 DEG C/h~10 DEG C/h, be incubated 1h~5h；
1.2）Insulation heat treatment：Timber after primary drying is warming up to into 160 DEG C~260 DEG C by 130 DEG C, heating rate is 10
DEG C/h~15 DEG C/h, temperature retention time is 1h~4h, and the oxygen content of timber is controlled in the range of≤2%；
1.3）Cooling damping：Timber after insulation heat treatment is carried out into steam-injection process, treats that temperature is down to 100 in high-temperature heat treatment tank
DEG C when, stop steam-injection process, go out tank after Wood temperature is down to room temperature, obtain heat-treated wood；
The step 2）Dipping enhancement process comprise the steps：
2.1）Evacuation：By step 1）Gained heat-treated wood is placed in impregnating autoclave and carries out evacuation process, and vacuum is 0.06MPa
~0.095MPa, the dwell time is 0.25h~1h；
2.2）Impregnating by pressure：Resin adhesive is added into impregnating autoclave, pressurization leaching is carried out to the heat-treated wood after evacuation process
Stain process, impregnation pressure is 0.5MPa~2.5MPa, and dip time is 30min~120min；
2.3）Redrying：Heat-treated wood after impregnating by pressure is carried out into redrying, is 10%~15% to final moisture content, obtained
Impreg；
The step 3）Solidifying and setting process comprise the steps：
3.1）Curing molding：By step 2）Gained impreg is placed in high-temperature heat treatment tank, with the intensification speed of 5 DEG C/h~10 DEG C/h
Rate is warming up to 105 DEG C~130 DEG C, is incubated 6h~12h；
3.2）Cooling damping：Steam-injection conditioning is carried out to the impreg after curing molding, is 5%~8% to final moisture content, obtained
Enhancement mode high-temperature thermal treatment timber；
The Resin adhesive is low-molecular-weight resin adhesive, the solid content of the low-molecular-weight resin adhesive is 35%~
50%, the dynamic viscosity of the low-molecular-weight resin adhesive is 10mPas~20mPas；
The low-molecular-weight resin adhesive includes urea-formaldehyde resin adhesive or the glutinous agent of water-soluble phenolic resin adhesive.
2. manufacture method according to claim 1, it is characterised in that the manufacture method also includes Balance Treatment, specifically
Step is：By step 3）Mi Dui displays 14 days~30 days in gained enhancement mode high-temperature thermal treatment timber environment disposed within.
3. manufacture method according to claim 1, it is characterised in that the artificial forest wood be artificial forest quick growth poplar wood or
Artificial forest fast-growing Chinese fir；The first moisture content of the artificial forest wood is 12%~20%.
4. enhancement mode high-temperature thermal treatment timber obtained in a kind of manufacture method as any one of claims 1 to 3.
5. enhancement mode high-temperature thermal treatment timber according to claim 4, it is characterised in that the enhancement mode high-temperature heat treatment
The density of timber is 0.55g/cm3~0.7g/cm3；
The bending strength of the enhancement mode high-temperature thermal treatment timber is compared to the raw material, the step 1）The heat treatment for obtaining
The bending strength of material is respectively increased 72.7%~90.9%, 84.2%~137.5%；
The Deflection Modulus of Elasticity of the enhancement mode high-temperature thermal treatment timber is compared to the raw material, the step 1）The heat for obtaining
The Deflection Modulus of Elasticity for processing material is respectively increased 51.7%~78.5%, 66.7%~112.5%；
The radial shrinkage rate of the enhancement mode high-temperature thermal treatment timber reduces by 33.3% compared to the radial shrinkage rate of the raw material
~70%；
The Chordwise shrinkage of the enhancement mode high-temperature thermal treatment timber reduces by 38.2% compared to the Chordwise shrinkage of the raw material
~65%；
The radial direction bulking factor of the enhancement mode high-temperature thermal treatment timber reduces by 25.3% compared to the radial direction bulking factor of the raw material
~90.6%；
The tangential bulking factor of the enhancement mode high-temperature thermal treatment timber reduces by 35.5% compared to the tangential bulking factor of the raw material
~90.7%.
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| CN110666901B (en) * | 2019-09-24 | 2021-10-08 | 千年舟新材科技集团股份有限公司 | Environment-friendly moisture-proof wood board and preparation method and application thereof |
| CN111605013A (en) * | 2020-05-29 | 2020-09-01 | 泉州市康洪美傲建材科技有限公司 | Preparation method of high-strength anticorrosive carbonized wood |
| CN112388774A (en) * | 2020-10-27 | 2021-02-23 | 中国林业科学研究院木材工业研究所 | Preparation method of low-cost organic silicon treated multifunctional wood |
| CN114953074B (en) * | 2022-05-25 | 2022-12-06 | 安徽农业大学 | Wood heat treatment method capable of carrying out in-situ restoration and modified wood obtained by same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2269932C (en) * | 1996-10-30 | 2002-12-31 | Tarren Wood Products, Inc. | Method of pressure treating boards |
| CN101716790B (en) * | 2009-12-16 | 2011-11-02 | 中国热带农业科学院橡胶研究所 | Method for producing rubber tree carbonized wood by resin pretreatment |
| CN102837347B (en) * | 2012-09-24 | 2015-05-27 | 中南林业科技大学 | Poplar structural engineering material and manufacture method thereof |
| CN104526804B (en) * | 2014-12-30 | 2016-11-09 | 广州好莱客创意家居股份有限公司 | A kind of impreg and the preparation method of impregnating resin |
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