CN104890069B - A kind of CaCO3/ Wood composite material and preparation method thereof - Google Patents
A kind of CaCO3/ Wood composite material and preparation method thereof Download PDFInfo
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- CN104890069B CN104890069B CN201510358825.5A CN201510358825A CN104890069B CN 104890069 B CN104890069 B CN 104890069B CN 201510358825 A CN201510358825 A CN 201510358825A CN 104890069 B CN104890069 B CN 104890069B
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 37
- 239000002023 wood Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 235000010216 calcium carbonate Nutrition 0.000 title description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 75
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007598 dipping method Methods 0.000 claims abstract description 12
- 238000005470 impregnation Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 17
- 238000011033 desalting Methods 0.000 claims description 12
- 239000001110 calcium chloride Substances 0.000 claims description 9
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 244000055346 Paulownia Species 0.000 claims 2
- 238000009388 chemical precipitation Methods 0.000 abstract description 3
- 239000011734 sodium Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012620 biological material Substances 0.000 description 2
- 230000037396 body weight Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- B27K3/02—Processes; Apparatus
- B27K3/025—Controlling the process
-
- 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
- B27K3/16—Inorganic impregnating agents
- B27K3/20—Compounds of alkali metals or ammonium
-
- 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
- B27K3/16—Inorganic impregnating agents
- B27K3/32—Mixtures of different inorganic 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
-
- 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
-
- 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
- B27K2240/00—Purpose of the treatment
-
- 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
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The present invention relates to a kind of CaCO3The preparation method of/Wood composite material, including the step of timber is put in NaOH solution dried for standby after evacuation dipping and using MgCl2The step of solution impregnation.The invention further relates to prepare CaCO by said method3/ Wood composite material.The preparation method of the present invention improves the mechanical property and fire resistance of fast-growing forest timber, expands its range of application, makes low-grade timber reach the performance of high-grade timber.Composite, preparation process is simple are prepared using chemical precipitation method.
Description
Technical field
The present invention relates to composite production field, in particular to a kind of CaCO3/ Wood composite material and its preparation
Methods and applications.
Background technology
Current China non-renewable resources increasingly depleted, environment can't bear the heavy load, and are to ensure sustainable development, should make full use of
Renewable, free of contamination biomass resource and biological material.Timber is most typical biological material in nature, extensively should
Used in fields such as building, finishing and Furniture manufactures, but China's high-quality timber resources is seriously deficient at present, and high-quality importation of timber amount surpasses
The 40% of consumption figure is crossed, very big supply breach occurs in lumber market.China's fast-growing woods area occupies the world more than 0.53 hectare
First, but fast-growing woods wood quality is softer, poor mechanical property and incendive shortcoming seriously limits its application prospect.To fast-growing
Forest timber strengthens closely knit modification, can not only improve its mechanical property, while also giving the work(such as wood preservation, fire-retardant and suppression cigarette
Can, make fast-growing forest timber high performance and multifunction, for China speeds up to low-carbon green economy, realize timber industry and
The sustainable development of Foresty industry has great importance.
The content of the invention
The present invention provides a kind of CaCO3The preparation method of/Wood composite material, is modified process to fast-growing forest timber,
Overcome its own defect so as to which mechanical property and fire resistance are improved, expand the use range of fast-growing forest timber.
The present invention generates Calcium Carbonate in wood internal space by chemical precipitation method, prepares Calcium Carbonate/wood composite material
Material, can solve the problem that softer fast-growing woods wood quality, poor mechanical property and incendive shortcoming.
Specifically, one aspect of the present invention is related to a kind of CaCO3The preparation method of/Wood composite material, including by timber
It is put in NaOH solution after evacuation dipping the step of dried for standby；With with MgCl2The step of solution impregnation.Preferably, wherein
The concentration of NaOH solution is 1%；MgCl2The concentration of solution is 30%.
The present invention a specific embodiment in, also including generate Calcium Carbonate the step of, adopt vacuum including (1)
Depressurized system carries out CaCl to the timber Jing after evacuation dipping in NaOH solution2And MgCl2Solution impregnation, temperature control is 20
DEG C -100 DEG C, 2-5h is kept, and impregnates 12-48h at normal temperatures and pressures, then taken out test specimen and be placed in vacuum drying oven and dry；
(2) Na is impregnated under repeat the above steps, vacuum decompression2CO3Solution, temperature control keep 2-5h, and room temperature at 20 DEG C -100 DEG C
24-60h is impregnated under normal pressure；(3) timber to processing in step (2) carries out washing desalting processing, takes out permanent after desalting processing
Temperature is dried.
Preferably, CaCl2Solution concentration is 3.5mol/L；Na2CO3Solution concentration is 2.0mol/L.
Preferably, step (1), temperature is 20 DEG C in (2)；3h is kept in step (1), 24h is impregnated at normal temperatures and pressures；Step
Suddenly 3h is kept in (2), under normal temperature and pressure, 48h is impregnated.
Preferably, the wood source applied by the present invention is in fast-growing woods.
The present invention is mainly reacted in wood internal by calcium chloride and sodium carbonate, produces Calcium Carbonate, prepares Calcium Carbonate/wood
Material composite.
The purpose of another aspect of the present invention is to provide a kind of CaCO3/ Wood composite material, which is prepared by said method
Obtain.
Specifically, CaCO provided by the present invention3/ Wood composite material, its preparation method include for timber being put into NaOH
In solution evacuation dipping after dried for standby the step of and and use MgCl2The step of solution impregnation.Preferably, wherein NaOH solution
Concentration be 1%；MgCl2The concentration of solution is 30%.
In a specific embodiment of the present invention, its preparation method also includes the step of generating Calcium Carbonate, including
(1) CaCl is carried out to the timber Jing after evacuation dipping in NaOH solution using vacuum decompression system2And MgCl2Solution impregnation, temperature
Degree control keeps 2-5h, and impregnates 12-48h at normal temperatures and pressures, then take out test specimen and be placed in vacuum drying at 20 DEG C -100 DEG C
Dry in case；(2) Na is impregnated under repeat the above steps, vacuum decompression2CO3Solution, temperature control keep 2- at 20 DEG C -100 DEG C
24-60h is impregnated under 5h, and normal temperature and pressure；(3) timber to processing in step (2) carries out washing desalting processing, desalting processing
After take out freeze-day with constant temperature.
Preferably, CaCl2Solution concentration is 3.5mol/L；Na2CO3Solution concentration is 2.0mol/L.
Preferably, step (1), temperature is 20 DEG C in (2)；3h is kept in step (1), 24h is impregnated at normal temperatures and pressures；Step
Suddenly 3h is kept in (2), under normal temperature and pressure, 48h is impregnated.
Preferably, the wood source applied by the present invention is in fast-growing woods.
The purpose of third aspect present invention is to provide CaCO3The application of/Wood composite material, is applied to build, fits up
And Furniture manufacture.
The purpose of fourth aspect present invention is to provide a kind of method for improving Wood mechanical property and fire resistance, and which is special
Levy be include for timber being put into the dipping of evacuation in NaOH solution after the step that is dried and and use MgCl2The step of solution impregnation
Suddenly.Preferably, wherein the concentration of NaOH solution is 1%；MgCl2The concentration of solution is 30%.
The present invention a specific embodiment in, also including generate Calcium Carbonate the step of, adopt vacuum including (1)
Depressurized system carries out CaCl to the timber Jing after evacuation dipping in NaOH solution2And MgCl2Solution impregnation, temperature control is 20
℃-100℃；2-5h is kept, and impregnates 12-48h at normal temperatures and pressures, then taken out test specimen and be placed in drying in vacuum drying oven；
(2) Na is impregnated under repeat the above steps, vacuum decompression2CO3Solution, temperature control is at 20 DEG C -100 DEG C；Keep 2-5h, and room temperature
24-60h is impregnated under normal pressure；(3) timber to processing in step (2) carries out washing desalting processing, takes out permanent after desalting processing
Temperature is dried.
Preferably, CaCl2Solution concentration is 3.5mol/L；Na2CO3Solution concentration is 2.0mol/L.
Preferably, step (1), temperature is 20 DEG C in (2)；3h is kept in step (1), 24h is impregnated at normal temperatures and pressures；Step
Suddenly 3h is kept in (2), under normal temperature and pressure, 48h is impregnated.
Preferably, the wood source applied by the present invention is in fast-growing woods.
The invention has the beneficial effects as follows, the mechanical property and fire resistance of fast-growing forest timber are improve, its application is expanded
Scope, makes low-grade timber reach the performance of high-grade timber.Composite, preparation process is simple are prepared using chemical precipitation method.
Description of the drawings
Fig. 1 represents wood internal structure optical microscope；
Fig. 2 represents timber x-ray diffractometer (XRD) figure；
Fig. 3 represents scanning electron microscope (SEM) figure；
Fig. 4 represents mechanical property figure；
Fig. 5 represents the anti-pressure ability figure of the timber after method of the present invention process；
Fig. 6 represents the impact processed using NaOH process and unused NaOH to timber anti-pressure ability.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
(1) Paulownia wooden unit is put into in the NaOH solution that concentration is 1% dried for standby after evacuation dipping.
(2) CaCl is carried out to test specimen using vacuum decompression system2And MgCl2Solution impregnation, CaCl2Solution concentration is
3.5mol/L, MgCl2The concentration of solution is 30%, and temperature is 20 DEG C, keeps 3h, and impregnates 24h, Ran Houqu at normal temperatures and pressures
Go out test specimen and be placed in drying in vacuum drying oven.
(3) Na is impregnated under repeat the above steps, vacuum decompression2CO3Solution, Na2CO3Solution concentration is 2.0mol/L, temperature
For 20 DEG C, keep impregnating 48h under 3h, and normal temperature and pressure.
(4) wooden unit to processing in step 3 carries out washing desalting processing, takes out freeze-day with constant temperature, obtain final product after desalting processing
CaCO3/ Wood composite material.
To prepared CaCO3/ Wood composite material carries out test test, including optical microscope, X-ray diffraction
Instrument (XRD) and scanning electron microscope (SEM) are observed (as Figure 1-3), and mechanics machine determines the resistance to compression under variable concentrations
Intensity (as shown in Figure 4), experimental technique：Wooden unit test block surface is polished the CaCO for removing surface deposition with sand paper3, it is put into WDW
Microcomputer controls omnipotent test machine for mechanism (Changchun testing machine factory) sphere movable bearing support center, and uniform pressurization makes sample at 2 points
Destruction in clock, tests the axial compression strength of wooden unit.
As a result show, the wood internal structure for processing does not occur to destroy (as shown in Figure 1)；The timber for processing occurs
The absworption peak of Calcium Carbonate (as shown in Figure 2) and wood internal is distributed uniform calcium carbonate microparticle (as shown in Figure 3)；With
CaCl2The increase of solution concentration, the comprcssive strength of composite is in increase trend.
2 contrast experiment of embodiment
In contrast test, the wooden unit of experimental group is extracted with 1% NaOH solution dipping, CaCl2Solution concentration is 3.5mol/
L；Na2CO3Solution concentration is 2.0mol/L；Matched group saves the NaOH solution dipping extraction steps with 1%, other experimental procedures
It is identical.
Test result indicate that：The rate of body weight gain of the wooden unit extracted through NaOH is 45.13%, and processed without NaOH
The rate of body weight gain of wooden unit is 30.69%, illustrates the content of Calcium Carbonate in composite wood is improved through NaOH extractings；Mechanical property
Aspect, the comprcssive strength of the wooden unit extracted through NaOH is 32.68MPa, and the pressure resistance of the wooden unit processed without NaOH
Spend for 29.04MPa, illustrate the comprcssive strength of composite wood is improved through NaOH extractings, prepared composite it is anti-
Compressive Strength averagely improves 30% or so.
As seen in figs. 5-6, the timber after method of the present invention process, its anti-pressure ability are remarkably reinforced, especially Jing
After crossing NaOH process, its comprcssive strength is substantially better than the timber and material processed without NaOH, under identical displacement, institute's energy
The pressure for bearing is bigger.
Claims (4)
1. a kind of CaCO3The preparation method of/Wood composite material, it is characterised in that comprise the steps：
(1) Paulownia wooden unit is put into in the NaOH solution that concentration is 1% dried for standby after evacuation dipping；
(2) CaCl is carried out to test specimen using vacuum decompression system2And MgCl2Solution impregnation, CaCl2Solution concentration is 3.5mol/L,
MgCl2The concentration of solution is 30%, and temperature is 20 DEG C, keeps 3h, and impregnates 24h at normal temperatures and pressures, then takes out test specimen and put
Dry in vacuum drying oven；
(3) Na is impregnated under repeat the above steps, vacuum decompression2CO3Solution, Na2CO3Solution concentration is 2.0mol/L, and temperature is 20
DEG C, keep impregnating 48h under 3h, and normal temperature and pressure；
(4) wooden unit to processing in step 3 carries out washing desalting processing, takes out freeze-day with constant temperature, obtain final product CaCO after desalting processing3/
Wood composite material.
2. the preparation-obtained CaCO of preparation method according to claim 13/ Wood composite material.
3. the CaCO described in claim 23The application of/Wood composite material, it is characterised in that be applied to build, fit up and furniture
Manufacture.
4. a kind of method for improving Wood mechanical property and fire resistance, it is characterised in that comprise the steps：
(1) Paulownia wooden unit is put into in the NaOH solution that concentration is 1% dried for standby after evacuation dipping；
(2) CaCl is carried out to test specimen using vacuum decompression system2And MgCl2Solution impregnation, CaCl2Solution concentration is 3.5mol/L,
MgCl2The concentration of solution is 30%, and temperature is 20 DEG C, keeps 3h, and impregnates 24h at normal temperatures and pressures, then takes out test specimen and put
Dry in vacuum drying oven；
(3) Na is impregnated under repeat the above steps, vacuum decompression2CO3Solution, Na2CO3Solution concentration is 2.0mol/L, and temperature is 20
DEG C, keep impregnating 48h under 3h, and normal temperature and pressure；
(4) wooden unit to processing in step 3 carries out washing desalting processing, takes out freeze-day with constant temperature, obtain final product CaCO after desalting processing3/
Wood composite material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510358825.5A CN104890069B (en) | 2015-06-25 | 2015-06-25 | A kind of CaCO3/ Wood composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510358825.5A CN104890069B (en) | 2015-06-25 | 2015-06-25 | A kind of CaCO3/ Wood composite material and preparation method thereof |
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| CN104890069B true CN104890069B (en) | 2017-04-05 |
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| CN108297220A (en) * | 2017-12-20 | 2018-07-20 | 宜华生活科技股份有限公司 | Fast growing wood is inorganic modified and microwave treatment combines method of modifying |
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| CN113733273A (en) * | 2021-08-24 | 2021-12-03 | 广西大学 | Wood weight increasing and hardening method |
| CN113829459B (en) * | 2021-09-23 | 2022-07-22 | 北京科技大学 | Preparation method of artificially-degraded water-saturated 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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| CN101234496A (en) * | 2008-02-27 | 2008-08-06 | 中南林业科技大学 | Method for preventing eucalyptus wood from shrinking |
| CN101797762A (en) * | 2010-04-16 | 2010-08-11 | 东北林业大学 | Method for preparing amphiphobic wood/calcium carbonate composite material by biomimetic mineralization in-situ process |
-
2015
- 2015-06-25 CN CN201510358825.5A patent/CN104890069B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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