CN105922413B - Preparation method of magnetic wood material for absorbing electromagnetic wave - Google Patents
Preparation method of magnetic wood material for absorbing electromagnetic wave Download PDFInfo
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- CN105922413B CN105922413B CN201610251714.9A CN201610251714A CN105922413B CN 105922413 B CN105922413 B CN 105922413B CN 201610251714 A CN201610251714 A CN 201610251714A CN 105922413 B CN105922413 B CN 105922413B
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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
- B27K3/16—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
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/007—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising nanoparticles
-
- 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
- B27K3/50—Mixtures of different organic impregnating agents
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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
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0072—Mixed oxides or hydroxides containing manganese
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of a magnetic wood material for absorbing electromagnetic wave, relates to the preparation method of the magnetic wood material and aims to solve the problem that the electromagnetic wave cannot be efficiently absorbed by using the wood material in the prior art. The method comprises the following steps: step 1, preparing a graphene sheet; step 2, preparing MnFe2O4 nanometer particles; step 3, pre-treating the wood material; step 4, gluing the surface of the wood material; step 5, preparing solid turbid liquid; step 6, dipping to finish the preparation process of the magnetic wood material for absorbing electromagnetic wave. The preparation method disclosed by the invention is used for preparing the magnetic wood material for absorbing electromagnetic wave.
Description
Technical field
The present invention relates to the preparation method of magnetic timber.
Background technology
With the popularization of the wireless telecommunications systems such as mobile phone, computer, router, electromagnetic radiation has been obtained for people's
Pay attention to.In order to reduce the impact that unnecessary electromagnetic radiation brings to surrounding environment, electromagnetic wave absorbent material arises at the historic moment.Timber
As a kind of building of high-quality, ornament materials, all trades and professions of human lives are widely used in, particularly in the household of the mankind
In life.But, used as a kind of natural organic material, itself electromagnetic wave to frequency in 2GHz～18GHz is not inhaled
Adduction.Therefore, in the information age of nowadays high speed development, a kind of wood materials with microwave absorption effect are developed and has ten
Divide important meaning.
The content of the invention
The invention solves the problems that prior art there is a problem of being unable to efficient absorption electromagnetic wave using timber, and provide a kind of using
In the preparation method of the magnetic timber of electromagnetic wave absorption.
A kind of preparation method of the magnetic timber for electromagnetic wave absorption, specifically follows the steps below：
First, graphene film is prepared：
1., graphite powder, potassium peroxydisulfate, phosphorus pentoxide and acid solution are mixed, reactor is sealed, is 70 DEG C in temperature
Hydro-thermal reaction 1h～52h at～200 DEG C, is cooled to room temperature, and distilled water is then added in reactor, stands 1h～24h, obtains
Mixture A；
Described graphite powder is 1 with the mass ratio of potassium peroxydisulfate:(0.1～10)；Described graphite powder and phosphorus pentoxide
Mass ratio be 1:(0.1～10)；The quality of described graphite powder is 1g with the volume ratio of acid solution:(1～1000) mL；Institute
The quality of the graphite powder stated is 1g with the volume ratio of distilled water:(1～1000) mL；
Step one 1. described in acid solution be sulfuric acid that mass percent is 1%～99% or mass percent is
1%～99% nitric acid；
2., under conditions of temperature is for 0 DEG C～30 DEG C, with speed as 0.01mL/min～10mL/min, in mixture A
Acid solution and potassium permanganate are added, 1h～52h is reacted, distilled water is subsequently adding, 1h～52h is reacted, mixture B is obtained；
Described mixture A is 1 with the volume ratio of acid solution:(0.1～10)；The volume of described mixture A and height
The mass ratio of potassium manganate is 1mL:(0.01～10) g；Described mixture A is 1 with the volume ratio of distilled water:(0.1～10)；
Step one 2. described in acid solution be sulfuric acid that mass percent is 50%～98% or mass percent is
50%～98% nitric acid；
3. distilled water and hydrogen peroxide, are initially charged in mixture B, 1h～52h is reacted, mass percent is added for 1%
～20% hydrochloric acid solution or concentration are 1.0 × 10-4The alkaline solution of mol/L～10mol/L adjusts pH to neutrality, is then centrifuged for
Separate, obtain solid product, in the case where temperature is for 20 DEG C～150 DEG C, solid product is dried into 1h～48h, obtain graphene oxide；
Described mixture B is 1 with the volume ratio of distilled water:(1～100)；The volume of described mixture B and hydrogen peroxide
Than for 1:(0.01～10)；
4., graphene oxide is placed in into 10s～60s in the Muffle furnace that temperature is 500 DEG C～1100 DEG C, obtains Graphene
Piece；
2nd, MnFe is prepared2O4Nano-particle：
Fe will be contained3+Salt, contain Mn2+Salt and water mixing, obtain containing Fe3+And Mn2+Mixed solution, by alkali soluble
Liquid is added and contains Fe3+And Mn2+Mixed solution in, seal reactor, then temperature be 70 DEG C～200 DEG C at hydro-thermal reaction
1h～52h, obtains MnFe2O4Nano-particle；
Described contains Fe3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.01mol/L～10mol/L；Institute
That what is stated contains Mn2+Salt with contain Fe3+Salt mol ratio be 1:(1～20)；Described contains Fe3+And Mn2+Mixed solution
It is 1 with the volume ratio of aqueous slkali:(1～10)；
Described aqueous slkali be concentration for 0.1mol/L～10mol/L NaOH solution or mass percent be 1%～
10% ammonia spirit；
3rd, the pretreatment of timber：
The graphene film that 4. step one is prepared is mixed with distilled water, graphene solution is obtained, by the timber for cleaning up
In being immersed in graphene solution, and sealed reaction vessel, then vacuum impregnation 1h～24h is water at 70 DEG C～200 DEG C in temperature
Thermal response 1h～52h, then reaction vessel is cooled to into room temperature, reacted timber is taken out, and be 20 DEG C～150 DEG C in temperature
Under the conditions of, 1h～48h is vacuum dried, obtain Graphene/Wood composite material；
The quality of described graphene film is 1g with the volume ratio of distilled water:(1～100) mL；
4th, the surface coating of timber is processed：
1., Graphene/Wood composite material prepared by step 3 is placed in adhesive solvent I, dipping 1min～
30min, takes out, and dries in atmosphere；2., repeat step four 1. 1 time～10 times, obtain the timber after gluing is processed；
Described adhesive solvent I is carried out according to the following steps：Adhesive component A is added in solvent orange 2 A, glue is obtained
Glutinous agent component A solution；Adhesive B component is added in solvent B, adhesive B component solution is obtained；Adhesive component A is molten
Liquid mixes with adhesive B component solution, obtains adhesive solvent；Described solvent orange 2 A is same solvent with solvent B；
Described adhesive component A is epoxy resin, polyvinyl chloride or phenolic resin；Described adhesive B component is poly-
Acid amides, ethylenediamine, triethylene tetramine or maleic anhydride；
The quality of described adhesive component A is 1g with the volume ratio of solvent orange 2 A:(1～50) mL；Described adhesive B groups
The quality divided is 1g with the volume ratio of solvent B:(1～50) mL；Described adhesive component A solution and adhesive B component solution
Volume ratio be 1:(1～20)；
5th, solid suspension is prepared：
MnFe prepared by step 22O4Nano-particle is added in adhesive solvent II, after being sufficiently stirred for, obtains solid
Suspension；Described adhesive solvent II is identical adhesive solvent with the adhesive solvent I described in step 4；
Described MnFe2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:(1～100) mL；
6th, impregnation process：
1. in the solid suspension that the timber pickling after the gluing process for, 2. preparing step 4 is prepared to step 5, leaching
Stain 1min～30min, takes out, and 1min～30min is dried in atmosphere；2., repeat step six 1. 1 time～10 times, take out, in temperature
Spend under conditions of 45 DEG C～200 DEG C, to dry 1h～52h, obtain the magnetic timber for electromagnetic wave absorption.
The invention has the beneficial effects as follows：
Prepared by the present invention can be used for the magnetic timber of electromagnetic wave absorption, and process is simple, raw material sources are extensive, the magnetic for obtaining
Property timber has good magnetic and excellent electro-magnetic wave absorption performance.
The present invention is used for a kind of preparation method of the magnetic timber for electromagnetic wave absorption.
Description of the drawings
Fig. 1 is the photomacrograph of the magnetic timber for electromagnetic wave absorption prepared by embodiment one；1 prepares for embodiment one
The magnetic timber for electromagnetic wave absorption；2 is magnet；
Fig. 2 be embodiment one prepare the magnetic timber for electromagnetic wave absorption to frequency 2GHz～18GHz electricity
The reflection loss figure of magnetic wave；1 is unseasoned timber；2 is the magnetic timber for electromagnetic wave absorption prepared by embodiment one；
Fig. 3 be the Graphene/Wood composite material for preparing of contrast experiment one to frequency 2GHz～18GHz electromagnetic wave
Reflection loss figure；
Fig. 4 be the modified timber of magnetic nano-particle prepared by contrast experiment two to frequency 2GHz～18GHz electromagnetism
The reflection loss figure of ripple.
Specific embodiment
Technical solution of the present invention is not limited to the specific embodiment of act set forth below, also including each specific embodiment it
Between any combination.
Specific embodiment one：A kind of preparation side of the magnetic timber for electromagnetic wave absorption described in present embodiment
Method, specifically follows the steps below：
First, graphene film is prepared：
1., graphite powder, potassium peroxydisulfate, phosphorus pentoxide and acid solution are mixed, reactor is sealed, is 70 DEG C in temperature
Hydro-thermal reaction 1h～52h at～200 DEG C, is cooled to room temperature, and distilled water is then added in reactor, stands 1h～24h, obtains
Mixture A；
Described graphite powder is 1 with the mass ratio of potassium peroxydisulfate:(0.1～10)；Described graphite powder and phosphorus pentoxide
Mass ratio be 1:(0.1～10)；The quality of described graphite powder is 1g with the volume ratio of acid solution:(1～1000) mL；Institute
The quality of the graphite powder stated is 1g with the volume ratio of distilled water:(1～1000) mL；
Step one 1. described in acid solution be sulfuric acid that mass percent is 1%～99% or mass percent is
1%～99% nitric acid；
2., under conditions of temperature is for 0 DEG C～30 DEG C, with speed as 0.01mL/min～10mL/min, in mixture A
Acid solution and potassium permanganate are added, 1h～52h is reacted, distilled water is subsequently adding, 1h～52h is reacted, mixture B is obtained；
Described mixture A is 1 with the volume ratio of acid solution:(0.1～10)；The volume of described mixture A and height
The mass ratio of potassium manganate is 1mL:(0.01～10) g；Described mixture A is 1 with the volume ratio of distilled water:(0.1～10)；
Step one 2. described in acid solution be sulfuric acid that mass percent is 50%～98% or mass percent is
50%～98% nitric acid；
3. distilled water and hydrogen peroxide, are initially charged in mixture B, 1h～52h is reacted, mass percent is added for 1%
～20% hydrochloric acid solution or concentration are 1.0 × 10-4The alkaline solution of mol/L～10mol/L adjusts pH to neutrality, is then centrifuged for
Separate, obtain solid product, in the case where temperature is for 20 DEG C～150 DEG C, solid product is dried into 1h～48h, obtain graphene oxide；
Described mixture B is 1 with the volume ratio of distilled water:(1～100)；The volume of described mixture B and hydrogen peroxide
Than for 1:(0.01～10)；
4., graphene oxide is placed in into 10s～60s in the Muffle furnace that temperature is 500 DEG C～1100 DEG C, obtains Graphene
Piece；
2nd, MnFe is prepared2O4Nano-particle：
Fe will be contained3+Salt, contain Mn2+Salt and water mixing, obtain containing Fe3+And Mn2+Mixed solution, by alkali soluble
Liquid is added and contains Fe3+And Mn2+Mixed solution in, seal reactor, then temperature be 70 DEG C～200 DEG C at hydro-thermal reaction
1h～52h, obtains MnFe2O4Nano-particle；
Described contains Fe3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.01mol/L～10mol/L；Institute
That what is stated contains Mn2+Salt with contain Fe3+Salt mol ratio be 1:(1～20)；Described contains Fe3+And Mn2+Mixed solution
It is 1 with the volume ratio of aqueous slkali:(1～10)；
Described aqueous slkali be concentration for 0.1mol/L～10mol/L NaOH solution or mass percent be 1%～
10% ammonia spirit；
3rd, the pretreatment of timber：
The graphene film that 4. step one is prepared is mixed with distilled water, graphene solution is obtained, by the timber for cleaning up
In being immersed in graphene solution, and sealed reaction vessel, then vacuum impregnation 1h～24h is water at 70 DEG C～200 DEG C in temperature
Thermal response 1h～52h, then reaction vessel is cooled to into room temperature, reacted timber is taken out, and be 20 DEG C～150 DEG C in temperature
Under the conditions of, 1h～48h is vacuum dried, obtain Graphene/Wood composite material；
The quality of described graphene film is 1g with the volume ratio of distilled water:(1～100) mL；
4th, the surface coating of timber is processed：
1., Graphene/Wood composite material prepared by step 3 is placed in adhesive solvent I, dipping 1min～
30min, takes out, and dries in atmosphere；2., repeat step four 1. 1 time～10 times, obtain the timber after gluing is processed；
Described adhesive solvent I is carried out according to the following steps：Adhesive component A is added in solvent orange 2 A, glue is obtained
Glutinous agent component A solution；Adhesive B component is added in solvent B, adhesive B component solution is obtained；Adhesive component A is molten
Liquid mixes with adhesive B component solution, obtains adhesive solvent；Described solvent orange 2 A is same solvent with solvent B；
Described adhesive component A is epoxy resin, polyvinyl chloride or phenolic resin；Described adhesive B component is poly-
Acid amides, ethylenediamine, triethylene tetramine or maleic anhydride；
The quality of described adhesive component A is 1g with the volume ratio of solvent orange 2 A:(1～50) mL；Described adhesive B groups
The quality divided is 1g with the volume ratio of solvent B:(1～50) mL；Described adhesive component A solution and adhesive B component solution
Volume ratio be 1:(1～20)；
5th, solid suspension is prepared：
MnFe prepared by step 22O4Nano-particle is added in adhesive solvent II, after being sufficiently stirred for, obtains solid
Suspension；Described adhesive solvent II is identical adhesive solvent with the adhesive solvent I described in step 4；
Described MnFe2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:(1～100) mL；
6th, impregnation process：
1. in the solid suspension that the timber pickling after the gluing process for, 2. preparing step 4 is prepared to step 5, leaching
Stain 1min～30min, takes out, and 1min～30min is dried in atmosphere；2., repeat step six 1. 1 time～10 times, take out, in temperature
Spend under conditions of 45 DEG C～200 DEG C, to dry 1h～52h, obtain the magnetic timber for electromagnetic wave absorption.
The beneficial effect of present embodiment is：
Prepared by present embodiment can be used for the magnetic timber of electromagnetic wave absorption, and process is simple, raw material sources extensively, are obtained
Magnetic timber there is good magnetic and excellent electro-magnetic wave absorption performance.
Specific embodiment two：Present embodiment from unlike specific embodiment one：Step one 3. described in alkali
Property solution be NaOH solution, KOH solution or ammonia spirit.Other are identical with specific embodiment one.
Specific embodiment three：Present embodiment from unlike specific embodiment one or one of two：Institute in step 2
That what is stated contains Fe3+Salt be iron chloride, ferric sulfate or ferric nitrate.Other are identical with specific embodiment one or two.
Specific embodiment four：Unlike one of present embodiment and specific embodiment one to three：Institute in step 2
That what is stated contains Mn2+Salt be manganese chloride, manganese sulfate or manganese nitrate.Other are identical with specific embodiment one to three.
Specific embodiment five：Unlike one of present embodiment and specific embodiment one to four：Institute in step 3
The timber stated is softwood or broadleaf.Other are identical with specific embodiment one to four.
Specific embodiment six：Unlike one of present embodiment and specific embodiment one to five：Institute in step 4
The solvent orange 2 A stated is ethyl acetate, acetone or tetrahydrofuran.Other are identical with specific embodiment one to five.
Specific embodiment seven：Unlike one of present embodiment and specific embodiment one to six：Institute in step 4
The solvent B for stating is ethyl acetate, acetone or tetrahydrofuran.Other are identical with specific embodiment one to six.
Specific embodiment eight：Unlike one of present embodiment and specific embodiment one to seven：Institute in step 2
That what is stated contains Fe3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.02mol/L；Described contains Mn2+Salt with contain
There is Fe3+Salt mol ratio be 1:2；Described contains Fe3+And Mn2+The volume ratio of mixed solution and aqueous slkali be 1:1.Its
It is identical with specific embodiment one to seven.
Specific embodiment nine：Unlike one of present embodiment and specific embodiment one to eight：Will in step 3
The graphene film that 4. step one is prepared mixes with distilled water, obtains graphene solution, and the timber for cleaning up is immersed in into graphite
In alkene solution, and sealed reaction vessel, then vacuum impregnation 6h is hydro-thermal reaction 12h at 100 DEG C in temperature, then reaction is held
Device is cooled to room temperature, takes out reacted timber, and is under conditions of 103 DEG C, to be vacuum dried 24h in temperature, obtain Graphene/
Wood composite material.Other are identical with specific embodiment one to eight.
Specific embodiment ten：Unlike one of present embodiment and specific embodiment one to nine：Institute in step 5
The MnFe for stating2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:1mL.Other with specific embodiment one to
Nine is identical.
Beneficial effects of the present invention are verified using following examples：
Embodiment one：
A kind of preparation method of the magnetic timber for electromagnetic wave absorption is to carry out according to the following steps：
First, graphene film is prepared：
1., graphite powder, potassium peroxydisulfate, phosphorus pentoxide and acid solution are mixed, reactor is sealed, is 80 DEG C in temperature
Lower hydro-thermal reaction 6h, is cooled to room temperature, and distilled water is then added in reactor, stands 12h, obtains mixture A；
Described graphite powder is 1 with the mass ratio of potassium peroxydisulfate:1；The mass ratio of described graphite powder and phosphorus pentoxide
For 1:1；The quality of described graphite powder is 1g with the volume ratio of acid solution:5mL；The quality and distilled water of described graphite powder
Volume ratio be 1g:100mL；
Step one 1. described in acid solution be sulfuric acid that mass percent is 98%；
2., under conditions of temperature is for 0 DEG C, with speed as 0.1mL/min, acid solution and height are added in mixture A
Potassium manganate, reacts 4h, is subsequently adding distilled water, reacts 4h, obtains mixture B；
Described mixture A is 1 with the volume ratio of acid solution:0.2；The volume and potassium permanganate of described mixture A
Mass ratio be 1mL:0.03g；Described mixture A is 1 with the volume ratio of distilled water:0.5；
Step one 2. described in acid solution be sulfuric acid that mass percent is 98%；
3. distilled water and hydrogen peroxide, are initially charged in mixture B, 4h is reacted, the salt that mass percent is 25% is added
Acid solution or concentration adjust pH to neutrality for the alkaline solution of 0.1mol/L, are then centrifuged for separating, and solid product are obtained, in temperature
At for 100 DEG C, solid product is dried into 12h, obtains graphene oxide；
Step one 3. described in aqueous slkali be KOH solution；
Described mixture B is 1 with the volume ratio of distilled water:1；Described mixture B is 1 with the volume ratio of hydrogen peroxide:
0.01；
4., graphene oxide is placed in into 30s in the Muffle furnace that temperature is 1050 DEG C, obtains graphene film；
2nd, MnFe is prepared2O4Nano-particle：
Fe will be contained3+Salt, contain Mn2+Salt and water mixing, obtain containing Fe3+And Mn2+Mixed solution, by alkali soluble
Liquid is added and contains Fe3+And Mn2+Mixed solution in, seal reactor, then temperature be 120 DEG C at hydro-thermal reaction 12h, obtain
To MnFe2O4Nano-particle；
Described contains Fe3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.02mol/L；Described contains
Mn2+Salt with contain Fe3+Salt mol ratio be 1:2；Described contains Fe3+And Mn2+Mixed solution and aqueous slkali volume
Than for 1:1；
Described aqueous slkali is the NaOH solution that concentration is 1mol/L；
Described contains Fe3+Salt be iron chloride；Described contains Mn2+Salt be manganese chloride；
3rd, the pretreatment of timber：
The graphene film that 4. step one is prepared is mixed with distilled water, graphene solution is obtained, by the timber for cleaning up
In being immersed in graphene solution, and sealed reaction vessel, then vacuum impregnation 6h is hydro-thermal reaction 12h at 100 DEG C in temperature,
Again reaction vessel is cooled to into room temperature, takes out reacted timber, and under conditions of temperature is for 103 DEG C, be vacuum dried 24h,
Obtain Graphene/Wood composite material；
The quality of described graphene film is 1g with the volume ratio of distilled water:100mL；
Described timber is broadleaf；
4th, the surface coating of timber is processed：
1., Graphene/Wood composite material prepared by step 3 is placed in adhesive solvent I, 10min is impregnated, is taken out,
Dry in atmosphere；2., repeat step four 1. 10 times, obtain the timber after gluing is processed；
Described adhesive solvent I is carried out according to the following steps：Adhesive component A is added in solvent orange 2 A, glue is obtained
Glutinous agent component A solution；Adhesive B component is added in solvent B, adhesive B component solution is obtained；Adhesive component A is molten
Liquid mixes with adhesive B component solution, obtains adhesive solvent；Described solvent orange 2 A is same solvent with solvent B；
Described adhesive component A is epoxy resin；The described adhesive B component of step is polyamide；
The quality of described adhesive component A is 1g with the volume ratio of solvent orange 2 A:1mL；The matter of described adhesive B component
Amount is 1g with the volume ratio of solvent B:2mL；Described adhesive component A solution is 1 with the volume ratio of adhesive B component solution:
1；
Described solvent orange 2 A is ethyl acetate；Described solvent B is ethyl acetate；
5th, solid suspension is prepared：
MnFe prepared by step 22O4Nano-particle is added in adhesive solvent II, after being sufficiently stirred for, obtains solid
Suspension；Described adhesive solvent II is identical adhesive solvent with the adhesive solvent I described in step 4；
Described MnFe2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:1mL；
6th, impregnation process：
1. in the solid suspension that the timber pickling after the gluing process for, 2. preparing step 4 is prepared to step 5, leaching
Stain 10min, takes out, and 30min is dried in atmosphere；2., repeat step six 1. 5 times, take out, under conditions of temperature is for 60 DEG C,
Drying 24h, obtains the magnetic timber for electromagnetic wave absorption.
Fig. 1 is the photomacrograph of the magnetic timber for electromagnetic wave absorption prepared by embodiment one；1 prepares for embodiment one
The magnetic timber for electromagnetic wave absorption；2 is magnet, as seen from the figure, wood surface energy strong bond magnetic nano-particle, and
So that timber is provided with good magnetic.
Fig. 2 be embodiment one prepare the magnetic timber for electromagnetic wave absorption to frequency 2GHz～18GHz electricity
The reflection loss figure of magnetic wave；1 is unseasoned timber；2 is the magnetic timber for electromagnetic wave absorption prepared by embodiment one；By scheming
Understand, for electromagnetic wave absorption magnetic timber frequency for 8GHz Electromagnetic Field under, its reflection loss can reach
18dB, and in the range of 6.5～8.2GHz of frequency, its reflection loss can reach more than -10dB, illustrate in this frequency range
Interior, the timber after this process can absorb more than 90% electromagnetic wave, can serve as a kind of effective absorbing material.
Contrast experiment one：
First, graphene film is prepared：
1., graphite powder, potassium peroxydisulfate, phosphorus pentoxide and acid solution are mixed, reactor is sealed, is 80 DEG C in temperature
Lower hydro-thermal reaction 6h, is cooled to room temperature, and distilled water is then added in reactor, stands 12h, obtains mixture A；
Described graphite powder is 1 with the mass ratio of potassium peroxydisulfate:1；The mass ratio of described graphite powder and phosphorus pentoxide
For 1:1；The quality of described graphite powder is 1g with the volume ratio of acid solution:5mL；The quality and distilled water of described graphite powder
Volume ratio be 1g:100mL；
Step one 1. described in acid solution be sulfuric acid that mass percent is 98%；
2., under conditions of temperature is for 0 DEG C, with speed as 0.1mL/min, acid solution and height are added in mixture A
Potassium manganate, reacts 4h, is subsequently adding distilled water, reacts 4h, obtains mixture B；
Described mixture A is 1 with the volume ratio of acid solution:0.2；The volume and potassium permanganate of described mixture A
Mass ratio be 1mL:0.03g；Described mixture A is 1 with the volume ratio of distilled water:0.5；
Step one 2. described in acid solution be sulfuric acid that mass percent is 98%；
3. distilled water and hydrogen peroxide, are initially charged in mixture B, 4h is reacted, the salt that mass percent is 25% is added
Acid solution or concentration adjust pH to neutrality for the alkaline solution of 0.1mol/L, are then centrifuged for separating, and solid product are obtained, in temperature
At for 100 DEG C, solid product is dried into 12h, obtains graphene oxide；
Step one 3. described in aqueous slkali be KOH solution；
Described mixture B is 1 with the volume ratio of distilled water:1；Described mixture B is 1 with the volume ratio of hydrogen peroxide:
0.01；
4., graphene oxide is placed in into 30s in the Muffle furnace that temperature is 1050 DEG C, obtains graphene film；
2nd, Graphene/Wood composite material is prepared：
The graphene film that 4. step one is prepared is mixed with distilled water, graphene solution is obtained, by the timber for cleaning up
In being immersed in graphene solution, and sealed reaction vessel, then vacuum impregnation 6h is hydro-thermal reaction 12h at 100 DEG C in temperature,
Again reaction vessel is cooled to into room temperature, takes out reacted timber, and under conditions of temperature is for 103 DEG C, be vacuum dried 24h,
Obtain Graphene/Wood composite material；
The quality of described graphene film is 1g with the volume ratio of distilled water:100mL；
Described timber is broadleaf.
Fig. 3 be the Graphene/Wood composite material for preparing of contrast experiment one to frequency 2GHz～18GHz electromagnetic wave
Reflection loss figure；Only damaged with the maximum reflection under the electromagnetic wave that frequency is 16GHz of the timber of Graphene process as seen from the figure
Only 4dB is consumed, illustrates that its absorbing property is unsatisfactory.
Contrast experiment two：
First, MnFe is prepared2O4Nano-particle：
Fe will be contained3+Salt, contain Mn2+Salt and water mixing, obtain containing Fe3+And Mn2+Mixed solution, by alkali soluble
Liquid is added and contains Fe3+And Mn2+Mixed solution in, seal reactor, then temperature be 120 DEG C at hydro-thermal reaction 12h, obtain
To MnFe2O4Nano-particle；
Described contains Fe3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.02mol/L；Described contains
Mn2+Salt with contain Fe3+Salt mol ratio be 1:2；Described contains Fe3+And Mn2+Mixed solution and aqueous slkali volume
Than for 1:1；
Described aqueous slkali is the NaOH solution that concentration is 1mol/L；
Described contains Fe3+Salt be iron chloride；Described contains Mn2+Salt be manganese chloride；
2nd, the surface coating of timber is processed：
1., the timber for cleaning up is placed in adhesive solvent I, 10min is impregnated, is taken out, dried in atmosphere；②、
Repeat step two 1. 10 times, obtains the timber after gluing is processed；Described timber is broadleaf；
Described adhesive solvent I is carried out according to the following steps：Adhesive component A is added in solvent orange 2 A, glue is obtained
Glutinous agent component A solution；Adhesive B component is added in solvent B, adhesive B component solution is obtained；Adhesive component A is molten
Liquid mixes with adhesive B component solution, obtains adhesive solvent；Described solvent orange 2 A is same solvent with solvent B；
Described adhesive component A is epoxy resin；The described adhesive B component of step is polyamide；
The quality of described adhesive component A is 1g with the volume ratio of solvent orange 2 A:1mL；The matter of described adhesive B component
Amount is 1g with the volume ratio of solvent B:2mL；Described adhesive component A solution is 1 with the volume ratio of adhesive B component solution:
1；
Described solvent orange 2 A is ethyl acetate；Described solvent B is ethyl acetate；
3rd, solid suspension is prepared：
MnFe prepared by step one2O4Nano-particle is added in adhesive solvent II, after being sufficiently stirred for, obtains solid
Suspension；Described adhesive solvent II is identical adhesive solvent with the adhesive solvent I described in step 4；
Described MnFe2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:1mL；
4th, impregnation process：
1. in the solid suspension that the timber pickling after the gluing process for, 2. preparing step 2 is prepared to step 3, leaching
Stain 10min, takes out, and 30min is dried in atmosphere；2., repeat step four 1. 5 times, take out, under conditions of temperature is for 60 DEG C,
Drying 24h, obtains the modified timber of magnetic nano-particle.
Fig. 4 be the modified timber of magnetic nano-particle prepared by contrast experiment two to frequency 2GHz～18GHz electromagnetism
The reflection loss figure of ripple；MnFe is used as seen from the figure2O4The maximum reflection loss under the electromagnetic wave of 16GHz of the timber of coating reaches
5dB has been arrived, it is more slightly higher than the timber after Graphene process, but its wave-absorbing effect is still undesirable.
The effect data of embodiment one be greater than contrast experiment one and the data of contrast experiment two plus and, be by gluing
MnFe2O4Nano-particle, due to its excellent magnetic and the structure effect of nano-particle, can improve between timber and air
Impedance matching, so as to reduce reflex of the electromagnetic wave in timber interface, makes more electromagnetic waves enter timber.Work as electromagnetic wave
Into material internal, MnFe2O4Nano-particle will also occur polarization, produce magnetic domain resonance and eddy current loss, can be to electromagnetism
The generation assimilation effect of ripple.Meanwhile, by preprocessing process, with hydrogen bond formation strong bonded between Graphene and timber, so as to
The dielectric properties of timber are improved, is conducive to producing polarization between electronics, when more electromagnetic waves enter wood internal,
Due to timber, the enhanced dielectric loss effect in electromagnetic field, causes the absorption efficiency to electromagnetic wave to increase.On the other hand, when more
When many electromagnetic waves enter wood internal, due to the porous and the architectural feature of anisotropic of timber, contribute to electromagnetic wave product
Raw multiple scattering, the scattering process of this reinforcement is also beneficial to increase the probability of electromagnetic wave loss.By impedance matching, magnetic loss
Consumption, dielectric loss, and multiple scattering effect serve such technique effect jointly.
Claims (9)
1. a kind of a kind of preparation method of the magnetic timber for electromagnetic wave absorption, it is characterised in that magnetic for electromagnetic wave absorption
The preparation method of property timber is followed the steps below：
First, graphene film is prepared：
1., by graphite powder, potassium peroxydisulfate, phosphorus pentoxide and acid solution mix, seal reactor, temperature be 70 DEG C～
Hydro-thermal reaction 1h～52h at 200 DEG C, is cooled to room temperature, and distilled water is then added in reactor, stands 1h～24h, is mixed
Compound A；
Described graphite powder is 1 with the mass ratio of potassium peroxydisulfate:(0.1～10)；The matter of described graphite powder and phosphorus pentoxide
Amount is than being 1:(0.1～10)；The quality of described graphite powder is 1g with the volume ratio of acid solution:(1～1000) mL；Described
The quality of graphite powder is 1g with the volume ratio of distilled water:(1～1000) mL；
Step one 1. described in acid solution for sulfuric acid that mass percent is 1%～99% or mass percent be 1%～
99% nitric acid；
2., under conditions of temperature is for 0 DEG C～30 DEG C, with speed as 0.01mL/min～10mL/min, add in mixture A
Acid solution and potassium permanganate, react 1h～52h, are subsequently adding distilled water, react 1h～52h, obtain mixture B；
Described mixture A is 1 with the volume ratio of acid solution:(0.1～10)；The volume and permanganic acid of described mixture A
The mass ratio of potassium is 1mL:(0.01～10) g；Described mixture A is 1 with the volume ratio of distilled water:(0.1～10)；
Step one 2. described in acid solution be 50% for sulfuric acid that mass percent is 50%～98% or mass percent
～98% nitric acid；
3., it is initially charged distilled water and hydrogen peroxide in mixture B, reacts 1h～52h, add mass percent for 1%～
20% hydrochloric acid solution or concentration are 1.0 × 10-4The alkaline solution of mol/L～10mol/L adjusts pH to neutrality, is then centrifuged for point
From, solid product is obtained, in the case where temperature is for 20 DEG C～150 DEG C, solid product is dried into 1h～48h, obtain graphene oxide；
Described mixture B is 1 with the volume ratio of distilled water:(1～100)；Described mixture B is with the volume ratio of hydrogen peroxide
1:(0.01～10)；
4., graphene oxide is placed in into 10s～60s in the Muffle furnace that temperature is 500 DEG C～1100 DEG C, obtains graphene film；
2nd, MnFe is prepared2O4Nano-particle：
Fe will be contained3+Salt, contain Mn2+Salt and water mixing, obtain containing Fe3+And Mn2+Mixed solution, by aqueous slkali plus
Enter containing Fe3+And Mn2+Mixed solution in, seal reactor, then temperature be 70 DEG C～200 DEG C at hydro-thermal reaction 1h～
52h, obtains MnFe2O4Nano-particle；
Described contains Fe3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.01mol/L～10mol/L；Described
Containing Mn2+Salt with contain Fe3+Salt mol ratio be 1:(1～20)；Described contains Fe3+And Mn2+Mixed solution and alkali
The volume ratio of solution is 1:(1～10)；
It is 1%～10% for the NaOH solution or mass percent of 0.1mol/L～10mol/L that described aqueous slkali is concentration
Ammonia spirit；
3rd, the pretreatment of timber：
The graphene film that 4. step one is prepared is mixed with distilled water, graphene solution is obtained, by the timber for cleaning up immersion
To in graphene solution, and sealed reaction vessel, vacuum impregnation 1h～24h, then in the case where temperature is for 70 DEG C～200 DEG C, hydro-thermal is anti-
1h～52h is answered, then reaction vessel is cooled to into room temperature, take out reacted timber, and in the condition that temperature is 20 DEG C～150 DEG C
Under, 1h～48h is vacuum dried, obtain Graphene/Wood composite material；
The quality of described graphene film is 1g with the volume ratio of distilled water:(1～100) mL；
4th, the surface coating of timber is processed：
1., Graphene/Wood composite material prepared by step 3 is placed in adhesive solvent I, 1min～30min is impregnated, is taken
Go out, dry in atmosphere；2., repeat step four 1. 1 time～10 times, obtain the timber after gluing is processed；
Described adhesive solvent I is carried out according to the following steps：Adhesive component A is added in solvent orange 2 A, adhesive is obtained
Component A solution；Adhesive B component is added in solvent B, adhesive B component solution is obtained；By adhesive component A solution with
Adhesive B component solution mixes, and obtains adhesive solvent；Described solvent orange 2 A is same solvent with solvent B；
Described adhesive component A is epoxy resin, polyvinyl chloride or phenolic resin；Described adhesive B component be polyamide,
Ethylenediamine, triethylene tetramine or maleic anhydride；
The quality of described adhesive component A is 1g with the volume ratio of solvent orange 2 A:(1～50) mL；Described adhesive B component
Quality is 1g with the volume ratio of solvent B:(1～50) mL；The body of described adhesive component A solution and adhesive B component solution
Product is than being 1:(1～20)；
5th, solid suspension is prepared：
MnFe prepared by step 22O4Nano-particle is added in adhesive solvent II, after being sufficiently stirred for, obtains solid suspended
Liquid；Described adhesive solvent II is identical adhesive solvent with the adhesive solvent I described in step 4；
Described MnFe2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:(1～100) mL；
6th, impregnation process：
1. in the solid suspension that the timber pickling after the gluing process for, 2. preparing step 4 is prepared to step 5, dipping
1min～30min, takes out, and 1min～30min is dried in atmosphere；2., repeat step six 1. 1 time～10 times, take out, in temperature
Under conditions of 45 DEG C～200 DEG C, 1h～52h is dried, obtain the magnetic timber for electromagnetic wave absorption.
2. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
Rapid one 3. described in alkaline solution be NaOH solution, KOH solution or ammonia spirit.
3. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
Contain Fe described in rapid two3+Salt be iron chloride, ferric sulfate or ferric nitrate.
4. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
Contain Mn described in rapid two2+Salt be manganese chloride, manganese sulfate or manganese nitrate.
5. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
Timber described in rapid three is softwood or broadleaf.
6. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
Solvent orange 2 A described in rapid four is ethyl acetate, acetone or tetrahydrofuran.
7. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
Contain Fe described in rapid two3+And Mn2+Mixed solution in contain Fe3+Salinity be 0.02mol/L；Described contains Mn2+
Salt with contain Fe3+Salt mol ratio be 1:2；Described contains Fe3+And Mn2+Mixed solution and aqueous slkali volume ratio
For 1:1.
8. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
The graphene film that 4. step one is prepared is mixed with distilled water in rapid three, obtains graphene solution, by the timber for cleaning up leaching
Enter in graphene solution, and sealed reaction vessel, vacuum impregnation 6h, be then hydro-thermal reaction 12h at 100 DEG C in temperature, then
Reaction vessel is cooled to into room temperature, reacted timber is taken out, and under conditions of temperature is for 103 DEG C, is vacuum dried 24h, obtained
To Graphene/Wood composite material.
9. a kind of preparation method of magnetic timber for electromagnetic wave absorption according to claim 1, it is characterised in that step
MnFe described in rapid five2O4The quality of nano-particle is 1g with the volume ratio of adhesive solvent II:1mL.
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| CN106863507B (en) * | 2016-12-30 | 2019-03-08 | 亚振家居股份有限公司 | A method of timber hydrophobicity and stability are improved based on nano-titanium dioxide |
| CN106827139B (en) * | 2017-01-18 | 2018-06-19 | 浙江省林业科学研究院 | The hydrophobic bamboo wood and its production technology of a kind of area load graphene oxide and silica |
| CN106827134A (en) * | 2017-02-10 | 2017-06-13 | 南京林业大学 | A kind of preparation method of the controllable magnetic timber of magnetic |
| CN107283566B (en) * | 2017-04-24 | 2020-11-24 | 中国林业科学研究院木材工业研究所 | Musical instrument fingerboard wood material, preparation method thereof and acoustic functional body impregnation liquid thereof |
| CN113340153A (en) * | 2021-05-20 | 2021-09-03 | 西北工业大学 | Infrared-radar compatible stealth material based on raw wood and preparation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51135841A (en) * | 1975-05-20 | 1976-11-25 | Riyouzou Takiguchi | Process for depositing magnetite on surface of solid material |
| JPS5537309A (en) * | 1978-09-06 | 1980-03-15 | Nippon Musical Instruments Mfg | Method of making magnetic or conductive wood material |
| SU889432A1 (en) * | 1980-06-04 | 1981-12-15 | Институт механики металлополимерных систем АН БССР | Method of producing antifriction materials |
| WO2005105398A1 (en) * | 2004-04-30 | 2005-11-10 | Japan Science And Technology Agency | Woody magnetic radio wave absorption board for indoor use |
| CN101691204A (en) * | 2009-08-13 | 2010-04-07 | 苏州纳米技术与纳米仿生研究所 | Stable nano graphene oxide under physiological condition and preparation method thereof |
| CN103771395A (en) * | 2012-10-23 | 2014-05-07 | 海洋王照明科技股份有限公司 | Graphene material and preparation method thereof |
-
2016
- 2016-04-21 CN CN201610251714.9A patent/CN105922413B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51135841A (en) * | 1975-05-20 | 1976-11-25 | Riyouzou Takiguchi | Process for depositing magnetite on surface of solid material |
| JPS5537309A (en) * | 1978-09-06 | 1980-03-15 | Nippon Musical Instruments Mfg | Method of making magnetic or conductive wood material |
| SU889432A1 (en) * | 1980-06-04 | 1981-12-15 | Институт механики металлополимерных систем АН БССР | Method of producing antifriction materials |
| WO2005105398A1 (en) * | 2004-04-30 | 2005-11-10 | Japan Science And Technology Agency | Woody magnetic radio wave absorption board for indoor use |
| CN101691204A (en) * | 2009-08-13 | 2010-04-07 | 苏州纳米技术与纳米仿生研究所 | Stable nano graphene oxide under physiological condition and preparation method thereof |
| CN103771395A (en) * | 2012-10-23 | 2014-05-07 | 海洋王照明科技股份有限公司 | Graphene material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Enhanced Microwave Absorption Property of Reduced Graphene Oxide (RGO)-MnFe2O4 Nanocomposites and Polyvinylidene Fluoride;Xiao-Juan Zhang等;《Appl. Mater. Interfaces》;20140429;全文 * |
| Graphene Oxide–MnFe2O4 Magnetic Nanohybrids for Efficient Removal of Lead and Arsenic from Water;Suresh Kumar等;《Appl. Mater. Interfaces》;20140930;全文 * |
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