CN109608683A - A kind of wooden sponge oil absorption material and preparation method thereof - Google Patents
A kind of wooden sponge oil absorption material and preparation method thereof Download PDFInfo
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- CN109608683A CN109608683A CN201811530160.1A CN201811530160A CN109608683A CN 109608683 A CN109608683 A CN 109608683A CN 201811530160 A CN201811530160 A CN 201811530160A CN 109608683 A CN109608683 A CN 109608683A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/025—Controlling the process
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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
- B27K5/0005—Cryogenic treatment
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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
- B27K5/04—Combined bleaching or impregnating and drying of wood
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
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Abstract
The invention discloses a kind of wooden sponge oil absorption materials, using cork wood as raw material, carry out Wood Bleaching, remove lignin, remove hemicellulose, freeze-drying, silanization treatment to get.The invention also discloses preparation methods.The present invention prepares porous oil-absorbing material creatively for the first time using natural reproducible timber as raw material, by top-down strategy, and economical and efficient, environmentally protective, preparation process is simple, raw material sources are extensive, is produced on a large scale, and has good popularization and application foreground.
Description
Technical field
The invention belongs to oil absorption material technical fields；More particularly, to a kind of wooden sponge oil absorption material and its preparation
Method.
Background technique:
With a large amount of discharges of oily wastewater in production and living and taking place frequently for Crude Oil at Sea leakage accident, greasy dirt in water
Dye has become the significant problem for endangering human health and Environmental security.How to realize that efficient water-oil separating has become urgently to solve
Problem certainly.Currently, traditional oily waste treatment method is mainly include the following types: (1) direct combustion method；(2) physicomechanical processes,
Such as arranged oil containment boom and oil skimmer；(3) method of chemical treatment, such as addition fuel thickener and dispersing agent, change the physics and chemistry of greasy dirt
Matter；(4) biological restoration decomposes greasy dirt using certain micro-organisms.All there is apparent lack in the above method
It falls into, such as operating procedure complexity, higher cost, low separation efficiency, generation secondary pollution etc..(such as with special surface wetability
Super-hydrophobic/oleophylic) porous adsorbing material have high-efficient, easy to operate, advantages of environment protection, have become grease at present
The research hotspot of separation field.Porous oil-absorbing material category is various, can be mainly divided into following several classes: (1) synthesizing polymeric hydantoin
Silk floss, such as polyurethane, polystyrol foam material.This kind of material oil absorbing effect is good, repeat performance is splendid, but raw
Object degradability is poor；(2) nano carbon-base aeroge, such as graphene, carbon nanotube.These material porosities are high, specific surface area
Greatly, therefore oil absorbency is good, but preparation process is complicated, the prices of raw materials are high；(3) cellulose aerogels.This kind of adsorbent material
Not only oil absorbency is good but also has biological degradability, belongs to environmental type novel oil absorption material.But prepared by its raw material
Process is complicated, at high cost.Further, since its unordered three-dimensional net structure, the mechanical property of cellulose aerogels is poor,
Destructible under external force, structural stability is poor, therefore usually requires that the mode of extraction or distillation is taken to recycle absorption
Oil this not only adds cost recovery and be easy to cause environmental pollution, is unfavorable for the reuse of oil absorption material.To sum up institute
It states, exploitation is efficient, inexpensive and good " environmental type " oil absorption material of repeat performance is of great significance.
Summary of the invention:
The problem that the present invention is complicated for traditional fibre element aeroge preparation process, mechanical property is poor, it is creatively first
It is secondary using natural reproducible timber as raw material, pass through a kind of wooden sponge oil absorption material of top-down strategy Development.
Technical solution of the present invention
A kind of wooden sponge oil absorption material carries out Wood Bleaching using cork wood as raw material, removes lignin, removes hemicellulose
Element, freeze-drying, silanization treatment to get.
A kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber is immersed in boiling in acid sodium chlorite solution, the processing time 3~
5 hours；
(3) it removes hemicellulose: above-mentioned delignification's timber being put into sodium hydroxide solution, at 50~85 DEG C
Reason 7~12 hours；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 24~36 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 45~90 DEG C of progress silylating reagents, the processing time be 1~3 hour to get.
The processing of dioxygen water process can be modified lignin, selective removal chromophoric group, keep subsequent removing wooden
Element is easier, and shortens delignification's time.
Preferably, using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight hundred of the hydrogen peroxide
Divide than being 20~30%；Heating temperature is 40~60 DEG C；Heating time is 5~10 hours.
Preferably, in step (2) acid sodium chlorite solution configuration method are as follows: configuration concentration is 0.5%~3%
Sodium chlorite solution, and with phosphorus acid for adjusting pH value to 4~6；The boiling temperature is 80~100 DEG C.Usual way is to adopt
Solution ph is adjusted with acetic acid, the present invention uses phosphoric acid, can guarantee the stabilization of solution pH value during the cooking process.
Preferably, the weight percent of sodium hydroxide solution described in step (3) is 6~10%.Sodium hydroxide solution
There is orientation removing effect to hemicellulose.
Preferably, in step (3), above-mentioned delignification's timber is put into sodium hydroxide solution, at 60~80 DEG C
Reason 8~10 hours.
Preferably, in step (4), step (3) treated timber is put into cold in refrigerator after n times distill water washing
Freeze, is freezed 5~10 hours under the conditions of -20 DEG C；Then it moves in vacuum freeze drier and is freeze-dried 24~36 hours.It is cold
Being lyophilized dry is that the substance quick freezing at low temperature dried keeps the hydrone freezed straight then under vacuum environment appropriate
Connecing distillation becomes the process of vapor evolution.Before freeze-drying, it will first prepare dry wood sample and be placed in low temperature refrigerator,
Fully charge is freeze-dried, and can save sublimation drying in this way, improves working efficiency.
Preferably, N >=2.
Preferably, in step (5), the sealing container is drier, and the material that step (4) is obtained is put into drying
In device, after covering sealing cover, drier being put into baking oven and is heated to 50~80 DEG C of progress silylating reagents, the processing time is 1~
3 hours to get.
Preferably, in step (5), the sealing container is drier, and the material that step (4) is obtained is put into drying
In device, the weight ratio of material and methyl trichlorosilane is 3:1~5:1.
The present invention using low-density cork wood as raw material, by be chemically treated orderly separate in wood cell wall lignin and
Hemicellulose retains cellulose skeleton and its orientation structure, then freeze-dried to be prepared that density is low, porosity
High, the wooden sponge material with layer structure.Silanization treatment is carried out to above-mentioned wooden sponge material using organosilan,
Wooden sponge oil absorption material can be obtained.Wooden sponge material density prepared by the present invention is low, and porosity is high, and oil absorbency is good
Good, maximum oil absorption has good compression performance and elasticity up to 41 times of own wt, can pass through the row of extruding
The oil of the method recycling absorption of oil, repeat performance are good.
Of the present invention preparation method is simple, and raw material sources are extensive, is produced on a large scale, and has good popularization
Application prospect.
Wooden sponge oil absorption material density prepared by the present invention is low, and porosity is high, and oil absorbency is good, and can lead to
The oil for squeezing the method recycling absorption of oil extraction is crossed, repeat performance is good, and is a kind of environmental type oil absorption material,
Raw material sources are extensive, and preparation cost is low, are produced on a large scale, and have broad application prospects in water-oil separating field.
Detailed description of the invention:
Fig. 1: the photomacrograph and its electron microscope picture of wooden sponge oil absorption material prepared by embodiment 1；
Fig. 2: the hydrophobic effect and water contact angle figure of wooden sponge oil absorption material prepared by embodiment 1；
Fig. 3: wooden sponge oil absorption material prepared by embodiment 1 removes the effect picture of oil slick；
Specific embodiment
The invention will now be further described with reference to specific embodiments, and the advantages and features of the present invention will be with describing
And it is apparent.But examples are merely exemplary, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art
Member is it should be understood that without departing from the spirit and scope of the invention can details and form to technical solution of the present invention
It modifies or replaces, but these modifications and replacement are fallen within the protection scope of the present invention.
A kind of embodiment 1: wooden sponge oil absorption material
It will be put into having a size of 1.50mm × 1.5mm × 1.5mm block shaped wood in the hydrogen peroxide solution that concentration is 30%, 60
Heat 8 hours under the conditions of DEG C, obtains bleaching timber；
Sodium chlorite (the NaClO that configuration concentration is 2%2) solution, and with phosphorus acid for adjusting pH value to 4.0, by above-mentioned bleaching
Timber is immersed in acid sodium chlorite solution, the boiling 3 hours under the conditions of 80 DEG C, to remove lignin in wood cell wall
Ingredient；Above-mentioned delignification's timber is put into 8% sodium hydroxide solution, is handled 8 hours at 80 DEG C, further to take off
Except hemicellulose.
Above-mentioned processing timber is put into refrigerator after repeatedly distillation water washing and is freezed 8 hours, vacuum refrigeration is subsequently moved to
Freeze-drying 30 hours is carried out in drying machine, condenser temperature is subzero 40 DEG C, vacuum degree 5Pa.Wooden sponge will be prepared
Material be put into drier store it is spare.
The small beaker for filling 2ml methyl trichlorosilane (MTCS) is put into drier bottom, and above-mentioned wooden sponge is put
Enter in drier, after covering sealing cover, drier is put into baking oven and is heated to 60 DEG C, processing can be obtained hydrophobic wooden for 2 hours
Sponge oil absorption material.
The photomacrograph and its electron microscope picture of wooden sponge oil absorption material manufactured in the present embodiment as shown in Figure 1,
The wooden white bulk of sponge oil absorption material prepared as seen from the figure, the low (~30mg/cm of density3), porosity height (~
98%), and there is special layer structure, this special layer structure assigns the good compression performance of material and rich
Elasticity, under 60% compression ratio, material still is able to recoil to original size, through 100 circulation compression experiment (40% pressures
Shrinkage), the rebound degree of material stills remain in 98% or more.
Silanization treatment makes on wooden spongy cellulose skeleton one strata silicon coating of uniform load, meanwhile, material
The density and porosity of material are held essentially constant.The hydrophobic effect and water of wooden sponge oil absorption material manufactured in the present embodiment connect
As shown in Fig. 2, wooden sponge material has good hydrophobic/oleophylic performance as seen from the figure, material surface water droplet connects feeler picture
Feeler reaches 151 °, and inner water droplets contact angle reaches 134 °, and material is whole all to have good hydrophobic performance.
Wooden sponge oil absorption material manufactured in the present embodiment removes the effect of oil slick as shown in figure 3, wooden as seen from the figure
Sponge material oil absorbency processed is good, can easily remove the silicone oil for swimming in the water surface, while can also remove and sink in water
High density heavy oil；The wooden sponge material can adsorb various organic solvents and oil compounds, and maximum oil absorption reaches itself
41 times of weight.More importantly the wooden sponge material recyclability is good, after oil suction reaches saturation, extruding can be passed through
Mode recycle the oil of absorption.After squeezing oil extraction, material can restore to original shape, and be used for oil suction next time.By 10
Secondary oil suction-oil extraction circulation, the oil absorption of material are held essentially constant.
Embodiment 2: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 5 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber is put into sodium hydroxide solution, it is small that 8 are handled at 55 DEG C
When；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 25 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 80 DEG C of progress silylating reagents, the processing time be 3 hours to get.
Embodiment 3: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 4 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber being put into sodium hydroxide solution, is handled at 50~85 DEG C
7 hours；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 24 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 90 DEG C of progress silylating reagents, the processing time be 1 hour to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
20%；Heating temperature is 40 DEG C；Heating time is 10 hours.
Embodiment 4: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 4 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber being put into sodium hydroxide solution, handles 12 at 55 DEG C
Hour；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 36 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 80 DEG C of progress silylating reagents, the processing time be 2 hours to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
25%；Heating temperature is 50 DEG C；Heating time is 6 hours；The configuration method of acid sodium chlorite solution in step (2) are as follows: match
The sodium chlorite solution that concentration is 3% is set, and with phosphorus acid for adjusting pH value to 5；The boiling temperature is 80 DEG C.
Embodiment 5: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 5 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber is put into sodium hydroxide solution, it is small that 8 are handled at 80 DEG C
When；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 30 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 60 DEG C of progress silylating reagents, the processing time be 3 hours to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
25%；Heating temperature is 45 DEG C；Heating time is 9 hours；The configuration method of acid sodium chlorite solution in step (2) are as follows: match
The sodium chlorite solution that concentration is 0.5% is set, and with phosphorus acid for adjusting pH value to 6；The boiling temperature is 100 DEG C；Step
(3) weight percent of the sodium hydroxide solution described in is 10%.
Embodiment 6: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 3 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber is put into sodium hydroxide solution, it is small that 8 are handled at 70 DEG C
When；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 30 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 75 DEG C of progress silylating reagents, the processing time be 1.5 hours to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
25%；Heating temperature is 45 DEG C；Heating time is 6 hours；The configuration method of acid sodium chlorite solution in step (2) are as follows: match
The sodium chlorite solution that concentration is 1% is set, and with phosphorus acid for adjusting pH value to 5；The boiling temperature is 90 DEG C；In step (3)
The weight percent of the sodium hydroxide solution is 10%.
Embodiment 7: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 4 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber being put into sodium hydroxide solution, handles 10 at 75 DEG C
Hour；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 24 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 70 DEG C of progress silylating reagents, the processing time be 2 hours to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
30%；Heating temperature is 50 DEG C；Heating time is 7 hours；The configuration method of acid sodium chlorite solution in step (2) are as follows: match
The sodium chlorite solution that concentration is 2% is set, and with phosphorus acid for adjusting pH value to 4；The boiling temperature is 85 DEG C；In step (3)
The weight percent of the sodium hydroxide solution is 7%；In step (4), step (3) treated timber is steamed through 2 times
It is put into refrigerator and freezes after distilled water washing, freezed 5 hours under the conditions of -20 DEG C；Then it moves in vacuum freeze drier and freezes
It is 24 hours dry.
Embodiment 8: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 4 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber is put into sodium hydroxide solution, it is small that 8 are handled at 55 DEG C
When；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 24 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 60 DEG C of progress silylating reagents, the processing time be 1 hour to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
28%；Heating temperature is 48 DEG C；Heating time is 5.5 hours；The configuration method of acid sodium chlorite solution in step (2) are as follows:
The sodium chlorite solution that configuration concentration is 2.5%, and with phosphorus acid for adjusting pH value to 4；The boiling temperature is 90 DEG C；Step
(3) weight percent of the sodium hydroxide solution described in is 7%；In step (4), by step (3) treated timber, warp
It is put into refrigerator and freezes after 2 distillation water washings, freezed 5 hours under the conditions of -20 DEG C；Then vacuum freeze drier is moved to
Middle freeze-drying 28 hours；In step (5), the sealing container is drier, and the material that step (4) is obtained is put into
In drier, the weight ratio of material and methyl trichlorosilane is 5:1, after covering sealing cover, drier is put into baking oven and is heated to
50 DEG C of progress silylating reagents, processing the time be 2 hours to get.
Embodiment 9: a kind of preparation method of wooden sponge oil absorption material, step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated
Processing；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 5 is small
When；
(3) it removes hemicellulose: above-mentioned delignification's timber is put into sodium hydroxide solution, it is small that 8 are handled at 80 DEG C
When；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and freeze after water washing
It is 30 hours dry；
(5) silanization treatment: the container for containing methyl trichlorosilane is put into sealing container bottom, and step (4) is obtained
Material be put into sealing container after, be heated to 80 DEG C of progress silylating reagents, the processing time be 2 hours to get；
Using cork wood as raw material in step (1), it is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is
30%；Heating temperature is 50 DEG C；Heating time is 9 hours；The configuration method of acid sodium chlorite solution in step (2) are as follows: match
The sodium chlorite solution that concentration is 1.5% is set, and with phosphorus acid for adjusting pH value to 6；The boiling temperature is 100 DEG C；Step
(3) weight percent of the sodium hydroxide solution described in is 6%；In step (4), by step (3) treated timber, warp
It is put into refrigerator and freezes after 5 distillation water washings, freezed 6 hours under the conditions of -20 DEG C；Then vacuum freeze drier is moved to
Middle freeze-drying 30 hours；In step (5), the sealing container is drier, and the material that step (4) is obtained is put into
In drier, the weight ratio of material and methyl trichlorosilane is 3:1, after covering sealing cover, drier is put into baking oven and is heated to
80 DEG C of progress silylating reagents, processing the time be 1 hour to get.
Claims (10)
1. a kind of wooden sponge oil absorption material, it is characterised in that: using cork wood as raw material, carry out Wood Bleaching, remove lignin, take off
Except hemicellulose, freeze-drying, silanization treatment to get.
2. a kind of preparation method of wooden sponge oil absorption material as described in claim 1, it is characterised in that step are as follows:
(1) Wood Bleaching: using cork wood as raw material, it is processed into blocky or sheet sample, is put into hydrogen peroxide solution, heated；
(2) it removes lignin: above-mentioned bleaching timber being immersed in boiling in acid sodium chlorite solution, the processing time 3~5 is small
When；
(3) remove hemicellulose: above-mentioned delignification's timber is put into sodium hydroxide solution, at 50~85 DEG C handle 7~
12 hours；
(4) it is freeze-dried: by step (3) treated timber, being put into vacuum freeze drier and be freeze-dried after water washing
24~36 hours；
(5) container for containing methyl trichlorosilane silanization treatment: is put into sealing container bottom, and the material that step (4) is obtained
After material is put into sealing container, be heated to 45~90 DEG C of progresss silylating reagents, handle the time for 1~3 hour to get.
3. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 2, it is characterised in that: in step (1) with
Cork wood is raw material, is processed into blocky or sheet sample；The weight percent of the hydrogen peroxide is 20~30%；Heating temperature is 40
~60 DEG C；Heating time is 5~10 hours.
4. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 2, it is characterised in that: sour in step (2)
Property sodium chlorite solution configuration method are as follows: the sodium chlorite solution that configuration concentration is 0.5%~3%, and with phosphorus acid for adjusting pH
It is worth to 4~6；The boiling temperature is 80~100 DEG C.
5. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 2, it is characterised in that: institute in step (3)
The weight percent for the sodium hydroxide solution stated is 6~10%.
6. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 2, it is characterised in that:, will in step (3)
Above-mentioned delignification's timber is put into sodium hydroxide solution, is handled 8~10 hours at 60~80 DEG C.
7. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 2, it is characterised in that:, will in step (4)
Step (3) treated timber, is put into refrigerator after n times distill water washing and freezes, and it is small that 5~10 are freezed under the conditions of -20 DEG C
When；Then it moves in vacuum freeze drier and is freeze-dried 24~36 hours.
8. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 7, it is characterised in that: N >=2.
9. a kind of preparation method of wooden sponge oil absorption material as claimed in claim 2, it is characterised in that: in step (5), institute
The sealing container stated is drier, and the material that step (4) is obtained is put into drier, after covering sealing cover, drier is put
Enter baking oven and be heated to 50~80 DEG C of progress silylating reagents, the processing time be 1~3 hour to get.
10. a kind of preparation method of wooden sponge oil absorption material as described in claim 2 or 9, it is characterised in that: step (5)
In, the sealing container is drier, and the material that step (4) is obtained is put into drier, material and methyl trichlorosilane
Weight ratio be 3:1~5:1.
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| CN110425757A (en) * | 2019-07-22 | 2019-11-08 | 北京航空航天大学 | A kind of solar steam generating device and its preparation method and application |
| CN110497492A (en) * | 2019-08-30 | 2019-11-26 | 北京林业大学 | A kind of preparation method of the super-hydrophobic wooden sponge |
| CN110527132A (en) * | 2019-08-30 | 2019-12-03 | 北京林业大学 | The super-hydrophobic wooden sponge of one kind and its application |
| CN111319107A (en) * | 2019-11-06 | 2020-06-23 | 华南理工大学 | High-hydrophobicity wood sponge with electrothermal conversion capability and preparation method and application thereof |
| CN113881098A (en) * | 2021-09-14 | 2022-01-04 | 中国林业科学研究院木材工业研究所 | Conductive wooden sponge with piezoresistive effect and preparation method and application thereof |
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| CN110425757A (en) * | 2019-07-22 | 2019-11-08 | 北京航空航天大学 | A kind of solar steam generating device and its preparation method and application |
| CN110497492A (en) * | 2019-08-30 | 2019-11-26 | 北京林业大学 | A kind of preparation method of the super-hydrophobic wooden sponge |
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| WO2023284228A1 (en) * | 2021-07-15 | 2023-01-19 | 东莞理工学院 | High-throughput super-hydrophobic wood, preparation method therefor and application thereof |
| CN113881098A (en) * | 2021-09-14 | 2022-01-04 | 中国林业科学研究院木材工业研究所 | Conductive wooden sponge with piezoresistive effect and preparation method and application thereof |
| CN114701033A (en) * | 2022-03-04 | 2022-07-05 | 哈尔滨工业大学（深圳） | Preparation method and application of surface carbonized delignified wood |
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