CN109176773A - A kind of nano cupric oxide in-situ reducing composite wooden material and preparation method thereof - Google Patents
A kind of nano cupric oxide in-situ reducing composite wooden material and preparation method thereof Download PDFInfo
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- CN109176773A CN109176773A CN201811072523.1A CN201811072523A CN109176773A CN 109176773 A CN109176773 A CN 109176773A CN 201811072523 A CN201811072523 A CN 201811072523A CN 109176773 A CN109176773 A CN 109176773A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
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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
- B27K3/20—Compounds of alkali metals or ammonium
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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
- B27K3/34—Organic impregnating agents
- B27K3/36—Aliphatic compounds
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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
- B27K3/34—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
- 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
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
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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
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/005—Reed
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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
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/007—Straw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/06—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood powder or sawdust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/08—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood fibres, e.g. produced by tearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
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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
- B27K2200/00—Wooden materials to be treated
- B27K2200/10—Articles made of particles or fibres consisting of wood or other lignocellulosic material
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- Wood Science & Technology (AREA)
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Abstract
The invention discloses a kind of nano cupric oxide in-situ reducing composite wooden materials and preparation method thereof.A kind of nano cupric oxide in-situ reducing composite wooden material is made of five kinds of components, and each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist 40%~50%, wheat straw coarse powder 20%~30%, reed fiber 10%~20%, nano oxidized copper powder 10%~15%, polyethylene glycol-400 0.5%~3%.Preparation method includes the preparation of Chinese pennisetum micro mist, the preparation of wheat straw coarse powder, the preparation of reed fiber, preparation, the material mixing, eight warm-forming, subzero treatment steps of ingredient, the wooden alloy powder.The preparation method integrated application powder metallurgy and the cross disciplines such as powder technology, composite material and engineering, Wood Science and Technology material forming are theoretical, have innovated the forming technique and method of composite wooden material.
Description
Technical field
The invention belongs to field of new materials, in particular to a kind of nano cupric oxide in-situ reducing composite wooden material and its system
Preparation Method.
Background technique
From the 1st United Nations Conference on Environment and Development of Rio de Daneiro, BRA in 1992 by the way that " climate change frame is public
About ", whole world reply weather becomes after by " Paris agreement " being the year two thousand twenty to the 21st global climate conference of Paris, FRA in 2015
Change action to make arrangements, then ratify " Paris agreement " to Hangzhou China G20 summit Sino-U.S. in 2016, " construct innovation, vigor,
While linkage, the world economy contained " to resource, environment and material scientific worker leave endless thinking with it is very heavy heavy
Load.On the one hand, the mankind have arrived mad stage with predation for the exploitation of forest, petroleum and mineral resources；On the other hand, right
The excessive and random lumbering of forest, the unrest of petroleum and mineral reserve is adopted disorderly dig brought by environmental pollution, climatic deterioration and secondary disaster made
People are terrified, suffer many privations.Then people start to consider how to reduce the dependence journey for forest, petroleum and mineral resources
Degree.As biological material scientific worker, it is honest and clean to construct high level clean utilization bamboo and wood residue, agricultural crop straw, fast-growing grass etc.
Valence carbon remittance resource, prepares theory, technology and the industrialization system of Strengthening and Toughening composite wooden material, and Green manufactures economic growth
Point enables the carbon sequestration period of cheap carbon remittance resource to extend, and has been duty without side to realize the negative growth of greenhouse gas emission
It borrows.
There are many utilization ways of the cheap resources such as herbaceous plant and agricultural crop straw.Its tradition mainly includes burning using method
Burning, fodder, Fertilizer Transformed, matrixing, papermaking, production wood-based plate etc., thus bring environmental pollution is asked with the consumption of resource low value
It inscribes fairly obvious；Then since 1970s, countries in the world start to pay much attention to the energy of all kinds of cheap carbon remittance resources
Change, ecology and extraction, the preparation of biomass engineering material of active constituent etc..
However, to be truly realized cheap carbon remittance resource high level clean utilization, it is still necessary to solve problems.Such as wood-based plate conduct
The Typical Representative of biomass engineering material, environmental issue when as furniture/building materials still remain, are beautiful without natural timber
Texture and natural colour, weather resistance are to be improved；Mechanical property is relatively low when as mechanical engineering material, hydrophobic function is insufficient,
Poor heat resistance etc..Therefore, research and develop that a kind of mechanical property Strengthening and Toughening, processing performance greenization, use environment is round-the-clock, vision is gentle
Graceful composite wooden material is very necessary.
Inventor has also been made big in terms of the Strengthening and Toughening (especially particle strengthening, dispersion-strengtherning) of composite wooden material
Measure work.Resource is converged as substrate using cheap carbon, from enhancement factor screening, forming technology optimization, performance and structural characterization, is shaped
Building of journey constitutive equation etc. has carried out Primary Study, and achieves certain progress.Disperse is uniformly distributed in wooden powder's matrix
In nano cupric oxide under high-energy ball milling, mixing and warm-pressing formation environment in-situ reducing at elemental copper, and with wooden powder
Grain realizes weldbonding, and the composite wooden material of preparation is fine and close, tough and tensile, and texture is gentle, fills in graceful craftwork, Garden Engineering and machinery
Standby etc. application prospect is huge.
Summary of the invention
The object of the present invention is to provide a kind of nano cupric oxide in-situ reducing composite wooden material, which is by five kinds of groups
Divide and be made, the composite wooden material of preparation has class bronze metal gloss, and specific gravity is only the 15%~17% of bronze, quiet Qu Qiang
Degree >=120MPa, electromagnet shield effect >=50dB, water absorption rate≤1.5%, coefficient of friction 0.15~0.2, fine and close, tough and tensile, texture temperature
Profit, graceful craftwork, Garden Engineering and in terms of application prospect it is huge, it can also be used to be electromagnetically shielded, be mechanical
The fields such as building and civil construction.
The invention also discloses a kind of preparation methods of nano cupric oxide in-situ reducing composite wooden material.
In order to achieve the above object, the technical solution adopted by the present invention is that: a kind of nano cupric oxide in-situ reducing wood composite
Material, it is characterised in that be made of five kinds of components, each component be calculated in mass percent be respectively as follows: Chinese pennisetum micro mist 40%~50%,
Wheat straw coarse powder 20%~30%, reed fiber 10%~20%, nano oxidized copper powder 10%~15%, polyethylene glycol-400 0.5%~3%.
Preferably, each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist 45%, wheat straw coarse powder 26%, reed
Fiber 14%, nano oxidized copper powder 13%, polyethylene glycol-400 2%.
The partial size of the Chinese pennisetum micro mist is 45~75 μm, moisture content 12%~15%.
The wheat straw coarse powder is obtained using following step: by wheat stalk with 3%~5% under 40~60 DEG C of environment temperatures
NaOH solution impregnate 15~for 24 hours, rinsed, dry after so that the hemicellulose level of wheat stalk is reduced by 20%~30%, through broken
Wheat straw coarse powder is made in broken, attritioning, screening process, reaches 425~850 μm of partial size, moisture content 15%~20%.
The reed fiber is obtained using following step: reed stalk being chopped into 4~6mm segment, in 40~60 DEG C of rings
15 are impregnated with 3%~5% NaOH solution at a temperature of border~for 24 hours, it rinsed, dry and reduce the hemicellulose level of reed stalk
20%~30%；Reed stalk is impregnated into 1~3h with " acetic acid+hydrogen peroxide " solution of 1:1 under 40~50 DEG C of environment temperatures again, through floating
It washes, dry the content of lignin reduction by 20%~30% for making reed stalk；It pulverized, be sieved by the reed rod of above-mentioned processing, is made
Partial size is the reed fiber of 4~6mm, adjusts moisture content to 15%~20%.
The nano oxidized copper powder is by CuCl2·2H2The pure massage of O and the analysis of NaOH you mixed than 1:2 after in room temperature
30~60min of lower grinding is made, and granularity is 30~40nm, purity >=99.9%.
A kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, which comprises the following steps:
The preparation of step 1, Chinese pennisetum micro mist: take Chinese pennisetum cleaned, dried, shred after dry, then by stalk crasher, mill
Micro mist is made through coarse crushing, attritioning, corase grinding, fine grinding, screening process in chaff machine, flour milling machine, makes 45~75 μm of its grain size of micropowder, aqueous
Rate 12%~15%；
The preparation of step 2, wheat straw coarse powder: the wheat stalk dried and without mildew is taken, first by wheat stalk in 40~60 DEG C of rings
At a temperature of border with 3%~5% NaOH solution impregnate 15~for 24 hours, rinsed, dry after the hemicellulose level of wheat stalk drops
Low 20%~30%, wheat straw coarse powder is made through broken, attritioning, screening process, reaches 425~850 μm of partial size, moisture content 15%
~20%；
The preparation of step 3, reed fiber: the reed stalk dried and without mildew is taken, 4~6mm segment is chopped into first, 40~60
15 are impregnated with 3%~5% NaOH solution under DEG C environment temperature~for 24 hours, it rinsed, dry and drop the hemicellulose level of reed stalk
Low 20%~30%；Reed stalk is impregnated into 1~3h, warp with " acetic acid+hydrogen peroxide " solution of 1:1 under 40~50 DEG C of environment temperatures again
Rinsing, drying make the content of lignin of reed stalk reduce by 20%~30%；It pulverized, be sieved by the reed rod of above-mentioned processing, made
The reed fiber for being 4~6mm at partial size adjusts moisture content to 15%~20%；
Step 4, ingredient: take step 1-3 obtain Chinese pennisetum micro mist, wheat straw coarse powder, reed fiber and nano oxidized copper powder, poly- second
Glycol -400 meets the mass percent of each component: Chinese pennisetum micro mist 40%~50%, wheat straw coarse powder 20%~30%, reed are fine
Tie up 10%~20%, nano oxidized copper powder 10%~15%, polyethylene glycol-400 0.5%~3%；
Step 5: the preparation of the wooden alloy powder: the whole Chinese pennisetum micro mists and whole nano oxidized copper powders for taking step 4 to obtain are put into
High-energy ball milling feed bin, the mutual frictional heat generation of pellet cause Chinese pennisetum micro mist weightless and partially carbonized, nascent state carbon with it is nano oxidized
Copper powder occurs reduction reaction and generates Nanometer Copper, and it is standby that newborn Nanometer Copper with Chinese pennisetum micro powder granule mutually diffuses to form the wooden alloy powder
With, in the above process, 120~180min of Ball-milling Time, material ball ratio 1:50, dry grinding, hard alloy ball radius 12mm, revolving speed
300r/min；
Step 6: material mixing: whole wheat straw coarse powder, whole reed fibers and the step 5 for taking step 4 to obtain first obtain complete
Portion's wood alloy powder is slightly mixed, until naked-eye observation is uniform；Then whole polyethylene glycol-400 that step 4 obtains are added to carry out
Essence mixing, it is spare to obtain uniform mixture；
Step 7, warm-forming: it is intracavitary in nitrogen to pour into rigid special forming mould tool type for the whole mixed powders for taking step 6 to obtain
Protection is lower to implement hot forming, to obtain Strengthening and Toughening nano cupric oxide in-situ reducing composite wooden material green compact；
Step 8, subzero treatment: the composite material green compact that step 7 obtains is put into liquid nitrogen vaporization formula cold treatment equipment and is carried out deeply
Cold treatment, technological parameter are as follows: cryogenic temperature -150~-185 DEG C, 1~3 DEG C/min of rate of temperature fall, 3~5h of soaking time.
Thick mixing in the step 6 uses vertical double helix conical mixer, and coefficient 0.5 is slightly done time
10min；Essence, which mixes, uses spiral strong mixing vertical conical batch mixer, and material filling coefficient 0.4~0.6, mixing time 15~
30min。
Hot forming in the step 7, process conditions are as follows: 180~220 DEG C of forming temperature, 160~200MPa of pressure,
45~90min of heat-insulation pressure keeping time, protective atmosphere nitrogen purity be 99.999%.
Beneficial effects of the present invention: (1) nano cupric oxide in-situ reducing composite wooden material of the invention is with reed, wolf
Tail grass and wheat straw are that substrate is combined using nano cupric oxide as intensifier by auxiliary agent of polyethylene glycol-400, wherein wheat straw
In the preparation of coarse powder and reed fiber reduce hemicellulose level and reduce content of lignin, be in order to improve content of cellulose,
Optimize substrate performance: improving compressibility, the conformance for reducing hydrophily, improving the stability and construction that produce, increase intensity, increase
By force to the adhesive force on surface；Wherein the preparation method of nano oxidized copper powder is simple, is easy practical operation, at low cost, acquisition is received
Rice cupric oxide powder be now do it is current, activity it is good, can be reduced in high-energy ball milling thoroughly, spread and fill between Chinese pennisetum micro powder granule
Point, alloying is complete；Wherein polyethylene glycol-400 as constituent, is free of as a kind of plasticizing inducer and bonding agent
There is the compound that phthalate is toxic, it is a kind of nontoxic, environmental protection and the auxiliary agent that can enhance toughness, intensity；In step 6
Middle addition polyethylene glycol-400 carries out smart mixing, is in order to which uniform, wet, rich sticking powder is made, is warm-forming
It creates conditions.
(2) there is class bronze metal gloss using composite wooden material prepared by the present invention, specific gravity is only the 15% of bronze
~17%, static bending strength >=120MPa, electromagnet shield effect >=50dB, water absorption rate≤1.5%, coefficient of friction 0.15~0.2 cause
Close, tough and tensile, texture is gentle, graceful craftwork, Garden Engineering and in terms of application prospect it is huge, it can also be used to
The fields such as electromagnetic shielding, mechanical building and civil construction.
(3) preparation method of nano cupric oxide in-situ reducing composite wooden material of the present invention, wherein high-energy ball-milling process, makes
The mixture of Chinese pennisetum micro mist and intensifier nano cupric oxide is subjected to rolling repeatedly, deform, weldbonding and broken, makes two kinds of micro mists
Be sufficiently mixed, intimate contact, cause Chinese pennisetum micro mist weightless in the mutual frictional heat generation of pellet and partially carbonized, nascent state carbon with
Nano oxidized copper powder occurs reduction reaction and generates Nanometer Copper, and newborn Nanometer Copper and Chinese pennisetum micro powder granule mutually diffuse to form the wooden conjunction
Gold, and then the uniformly wooden alloy powder is formed, it has been laid for nano cupric oxide in the in-situ reducing of subsequent warm-forming engineering good
Good basis；Wherein subzero treatment technology keeps the physical and mechanical property of the composite wooden material of preparation more stable, and product makes
Use longer life expectancy.
(4) present invention is using the preparation of Chinese pennisetum micro mist, the preparation of wheat straw coarse powder, the preparation of reed fiber, the wooden alloyed powder
Preparation, the material mixing, warm-forming and subzero treatment process at end, integrated application powder metallurgy and powder technology, composite wood
Material and the cross disciplines such as engineering, Wood Science and Technology material forming are theoretical, innovated the forming technique of composite wooden material with
Method.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, the present invention is retouched in detail below
State, the description of this part be only it is exemplary and explanatory, should not have any restriction effect to protection scope of the present invention.
The following are specific examples
Embodiment 1:
A kind of nano cupric oxide in-situ reducing composite wooden material, each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist
40%, wheat straw coarse powder 30%, reed fiber 17%, nano oxidized copper powder 10%, polyethylene glycol-400 3%.
A kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, comprising the following steps:
Step 1: take Chinese pennisetum cleaned, dried, shred after dry, then by stalk crasher, husk mill, flour milling machine through thick
Micro mist is made in broken, attritioning, corase grinding, fine grinding, screening process, makes 45 μm of its grain size of micropowder, moisture content 12%；
Step 2: the preparation of wheat straw coarse powder: the wheat stalk dried and without mildew is taken, first by wheat stalk in 40 DEG C of environment temperature
Degree is lower to impregnate 15h with 3% NaOH solution, rinsed, dry after so that the hemicellulose level of wheat stalk is reduced by 20%, through breaking
Wheat straw coarse powder is made in broken, attritioning, screening process, reaches 425 μm of partial size, moisture content 15%；
Step 3: the preparation of reed fiber: taking the reed stalk dried and without mildew, be chopped into 4mm segment first, in 40 DEG C of environment
At a temperature of with 3% NaOH solution impregnate 15h, rinsed, dry make reed stalk hemicellulose level reduce by 20%；Again by reed
Stalk impregnates 1h with " acetic acid+hydrogen peroxide " solution of 1:1 under 40 DEG C of environment temperatures, is rinsed, dries the lignin for making reed stalk
Content reduces by 20%；It pulverized, be sieved by the reed rod of above-mentioned processing, the reed fiber that partial size is 4mm is made, adjusts aqueous
Rate is to 15%；
Step 4: ingredient: taking step 1~3 acquisitions Chinese pennisetum micro mist, wheat straw coarse powder, reed fiber and nano oxidized copper powder, gather
Ethylene glycol -400 meets the mass percent of each component: Chinese pennisetum micro mist 40%, reed fiber 17%, is received wheat straw coarse powder 30%
Rice cupric oxide powder 10%, polyethylene glycol-400 3%；
Step 5: the preparation of the wooden alloy powder: the whole Chinese pennisetum micro mists and whole nano oxidized copper powders for taking step 4 to obtain are put into
High-energy ball milling feed bin, the mutual frictional heat generation of pellet cause Chinese pennisetum micro mist weightless and partially carbonized, nascent state carbon with it is nano oxidized
Copper powder occurs reduction reaction and generates Nanometer Copper, and it is standby that newborn Nanometer Copper with Chinese pennisetum micro powder granule mutually diffuses to form the wooden alloy powder
With, in the above process, Ball-milling Time 120min, material ball ratio 1:50, dry grinding, hard alloy ball radius 12mm, revolving speed 300r/
min；
Step 6: material mixing: whole wheat straw coarse powder, whole reed fibers and the step 5 for taking step 4 to obtain first obtain complete
Portion's wood alloy powder is put into vertical double helix conical mixer and is slightly mixed, and coefficient 0.5, slightly do time 10min, until meat
Eye observation is uniform；Then be added step 4 obtain whole polyethylene glycol-400 be put into spiral strong mixing vertical conical batch mixer into
Row essence mixing, it is spare to obtain uniform mixture for material filling coefficient 0.4, mixing time 15min；
Step 7: warm-forming: it is intracavitary in nitrogen to pour into rigid special forming mould tool type for the whole mixed powders for taking step 6 to obtain
Protection is lower to implement hot forming, 180 DEG C of forming temperature, pressure 160MPa, heat-insulation pressure keeping time 45min, protective atmosphere nitrogen it is pure
Degree is 99.999%, to obtain Strengthening and Toughening nano cupric oxide in-situ reducing composite wooden material green compact；
Step 8: subzero treatment: by the composite wooden material green compact that step 7 obtains be put into liquid nitrogen vaporization formula cold treatment equipment into
Row subzero treatment, technological parameter are as follows: -150 DEG C of cryogenic temperature, 1 DEG C/min of rate of temperature fall, soaking time 3h.
The nano oxidized copper powder is by CuCl2·2H2The pure massage of O and the analysis of NaOH you mixed than 1:2 after
Grinding 30min is made at room temperature, granularity 30nm, purity=99.9%.
There is class bronze metal gloss by the composite wooden material of the present invention that embodiment 1 obtains, specific gravity is only bronze
16%, static bending strength=130MPa, electromagnet shield effect=55dB, water absorption rate=1%, coefficient of friction 0.15, fine and close, tough and tensile, matter
Temperature-sensitive profit, graceful craftwork, Garden Engineering and in terms of application prospect it is huge, it can also be used to be electromagnetically shielded,
The fields such as machinery building and civil construction.
Embodiment 2:
A kind of nano cupric oxide in-situ reducing composite wooden material, each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist
47.5%, wheat straw coarse powder 20%, reed fiber 20%, nano oxidized copper powder 12%, polyethylene glycol-400 0.5%.
A kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, comprising the following steps:
Step 1: the preparation of Chinese pennisetum micro mist: take Chinese pennisetum cleaned, dried, shred after dry, then by stalk crasher, mill
Micro mist is made through coarse crushing, attritioning, corase grinding, fine grinding, screening process in chaff machine, flour milling machine, makes 75 μm of its grain size of micropowder, moisture content
15%；
Step 2: the preparation of wheat straw coarse powder: the wheat stalk dried and without mildew is taken, first by wheat stalk in 60 DEG C of environment temperature
The lower NaOH solution with 5% of degree impregnate rinsed for 24 hours, dry after so that the hemicellulose level of wheat stalk is reduced by 30%, through breaking
Wheat straw coarse powder is made in broken, attritioning, screening process, reaches 850 μm of partial size, moisture content 20%；
Step 3: the preparation of reed fiber: taking the reed stalk dried and without mildew, be chopped into 6mm segment first, in 60 DEG C of environment
At a temperature of with 5% NaOH solution impregnate for 24 hours, rinsed, dry make reed stalk hemicellulose level reduce by 30%；Again by reed
Stalk impregnates 3h in " acetic acid+hydrogen peroxide " solution of 1:1 under 50 DEG C of environment temperatures, is rinsed, dries and make the wooden of reed stalk
Cellulose content reduces by 30%；It pulverized, be sieved by the reed rod of above-mentioned processing, the reed fiber that partial size is 6mm is made, adjusting contains
Water rate is to 20%；
Step 4: ingredient: take step 1-3 obtain Chinese pennisetum micro mist, wheat straw coarse powder, reed fiber and nano oxidized copper powder, poly- second
Glycol -400 meets the mass percent of each component: Chinese pennisetum micro mist 47.5%, reed fiber 20%, is received wheat straw coarse powder 20%
Rice cupric oxide powder 12%, polyethylene glycol-400 0.5%；
Step 5: the preparation of the wooden alloy powder: the whole Chinese pennisetum micro mists and whole nano oxidized copper powders for taking step 4 to obtain are put into
High-energy ball milling feed bin, the mutual frictional heat generation of pellet cause Chinese pennisetum micro mist weightless and partially carbonized, nascent state carbon with it is nano oxidized
Copper powder occurs reduction reaction and generates Nanometer Copper, and it is standby that newborn Nanometer Copper with Chinese pennisetum micro powder granule mutually diffuses to form the wooden alloy powder
With, in the above process, Ball-milling Time 180min, material ball ratio 1:50, dry grinding, hard alloy ball radius 12mm, revolving speed 300r/
min；
Step 6: material mixing: whole wheat straw coarse powder, whole reed fibers and the step 5 for taking step 4 to obtain first obtain complete
Portion's wood alloy powder is put into vertical double helix conical mixer and is slightly mixed, and coefficient 0.5, slightly do time 10min, until meat
Eye observation is uniform；Then be added step 4 obtain whole polyethylene glycol-400 be put into spiral strong mixing vertical conical batch mixer into
Row essence mixing, it is spare to obtain uniform mixture for material filling coefficient 0.6, mixing time 30min；
Step 7: warm-forming: it is intracavitary in nitrogen to pour into rigid special forming mould tool type for the whole mixed powders for taking step 6 to obtain
Protection is lower to implement hot forming, 220 DEG C of forming temperature, pressure 200MPa, heat-insulation pressure keeping time 90min, protective atmosphere nitrogen it is pure
Degree is 99.999%, to obtain Strengthening and Toughening nano cupric oxide in-situ reducing composite wooden material green compact；
Step 8: subzero treatment: by the composite wooden material green compact that step 7 obtains be put into liquid nitrogen vaporization formula cold treatment equipment into
Row subzero treatment, technological parameter are as follows: -185 DEG C of cryogenic temperature, 3 DEG C/min of rate of temperature fall, soaking time 5h.
The nano oxidized copper powder is by CuCl2·2H2The pure massage of O and the analysis of NaOH you mixed than 1:2 after
Grinding 60min is made at room temperature, granularity 40nm, purity=100%.
There is class bronze metal gloss by the composite wooden material of the present invention that embodiment 2 obtains, specific gravity is only bronze
17%, static bending strength=135MPa, electromagnet shield effect=60dB, water absorption rate=1.5%, coefficient of friction 0.17 are fine and close, tough and tensile,
Texture is gentle, graceful craftwork, Garden Engineering and in terms of application prospect it is huge, it can also be used to electromagnetic screen
It covers, machinery is built and the fields such as civil construction.
Embodiment 3:
A kind of nano cupric oxide in-situ reducing composite wooden material, each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist
50%, wheat straw coarse powder 23%, reed fiber 10%, nano oxidized copper powder 15%, polyethylene glycol-400 2%.
A kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, comprising the following steps:
Step 1: the preparation of Chinese pennisetum micro mist: take Chinese pennisetum cleaned, dried, shred after dry, then by stalk crasher, mill
Micro mist is made through coarse crushing, attritioning, corase grinding, fine grinding, screening process in chaff machine, flour milling machine, makes 65 μm of its grain size of micropowder, moisture content
13%；
Step 2: the preparation of wheat straw coarse powder: the wheat stalk dried and without mildew is taken, first by wheat stalk in 50 DEG C of environment temperature
Degree is lower to impregnate 20h with 4% NaOH solution, rinsed, dry after make the hemicellulose level of wheat stalk reduce by 25% be crushed,
Wheat straw coarse powder is made in attritioning, screening process, reaches 650 μm of partial size, moisture content 17%；
Step 3: the preparation of reed fiber: taking the reed stalk dried and without mildew, be chopped into 5mm segment first, in 50 DEG C of environment
At a temperature of with 4% NaOH solution impregnate 20h, rinsed, dry make reed stalk hemicellulose level reduce by 25%；Again by reed
Stalk impregnates 2h with " acetic acid+hydrogen peroxide " solution of 1:1 under 45 DEG C of environment temperatures, is rinsed, dries the lignin for making reed stalk
Content reduces by 25%；It pulverized, be sieved by the reed rod of above-mentioned processing, the reed fiber that partial size is 5mm is made, adjusts aqueous
Rate is to 18%；
Step 4: ingredient: taking step 1~3 acquisitions Chinese pennisetum micro mist, wheat straw coarse powder, reed fiber and nano oxidized copper powder, gather
Ethylene glycol -400 meets the mass percent of each component: Chinese pennisetum micro mist 50%, reed fiber 10%, is received wheat straw coarse powder 23%
Rice cupric oxide powder 15%, polyethylene glycol-400 2%；
Step 5: the preparation of the wooden alloy powder: the whole Chinese pennisetum micro mists and whole nano oxidized copper powders for taking step 4 to obtain are put into
High-energy ball milling feed bin, the mutual frictional heat generation of pellet cause Chinese pennisetum micro mist weightless and partially carbonized, nascent state carbon with it is nano oxidized
Copper powder occurs reduction reaction and generates Nanometer Copper, and it is standby that newborn Nanometer Copper with Chinese pennisetum micro powder granule mutually diffuses to form the wooden alloy powder
With, in the above process, Ball-milling Time 145min, material ball ratio 1:50, dry grinding, hard alloy ball radius 12mm, revolving speed 300r/
min；
Step 6: material mixing: whole wheat straw coarse powder, whole reed fibers and the step 5 for taking step 4 to obtain first obtain complete
Portion's wood alloy powder is put into vertical double helix conical mixer and is slightly mixed, and coefficient 0.5, slightly do time 10min, until meat
Eye observation is uniform；Then be added step 4 obtain whole polyethylene glycol-400 be put into spiral strong mixing vertical conical batch mixer into
Row essence mixing, it is spare to obtain uniform mixture for material filling coefficient 0.5, mixing time 20min；
Step 7: warm-forming: it is intracavitary in nitrogen to pour into rigid special forming mould tool type for the whole mixed powders for taking step 6 to obtain
Protection is lower to implement hot forming, 190 DEG C of forming temperature, pressure 180MPa, heat-insulation pressure keeping time 75min, protective atmosphere nitrogen it is pure
Degree is 99.999%, to obtain Strengthening and Toughening nano cupric oxide in-situ reducing composite wooden material green compact；
Step 8: subzero treatment: by the composite wooden material green compact that step 7 obtains be put into liquid nitrogen vaporization formula cold treatment equipment into
Row subzero treatment, technological parameter are as follows: -165 DEG C of cryogenic temperature, 2 DEG C/min of rate of temperature fall, soaking time 4h.
The nano oxidized copper powder is by CuCl2·2H2The pure massage of O and the analysis of NaOH you mixed than 1:2 after
Grinding 45min is made at room temperature, granularity 35nm, purity=99.95%.
There is class bronze metal gloss by the composite wooden material of the present invention that embodiment 3 obtains, specific gravity is only bronze
15.5%, static bending strength=120MPa, electromagnet shield effect=50dB, water absorption rate=0.8%, coefficient of friction 0.2 are fine and close, hard
Tough, texture is gentle, graceful craftwork, Garden Engineering and in terms of application prospect it is huge, it is also possible to electromagnetic screen
It covers, machinery is built and the fields such as civil construction.
Embodiment 4:
A kind of nano cupric oxide in-situ reducing composite wooden material, each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist
45%, wheat straw coarse powder 26%, reed fiber 14%, nano oxidized copper powder 13%, polyethylene glycol-400 2%.
A kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, comprising the following steps:
Step 1: the preparation of Chinese pennisetum micro mist: the preparation of Chinese pennisetum micro mist: take Chinese pennisetum cleaned, dried, shred after dry, then
Micro mist is made through coarse crushing, attritioning, corase grinding, fine grinding, screening process by stalk crasher, husk mill, flour milling machine, makes its micro mist grain
Diameter is 60 μm, moisture content 13%；
Step 2: the preparation of wheat straw coarse powder:: the wheat stalk dried and without mildew is taken, first by wheat stalk in 40~60 DEG C of rings
Impregnate 18h with the NaOH solution under 45 DEG C of environment temperatures with 4% at a temperature of border, rinsed, dry after make the hemicellulose of wheat stalk
Cellulose content reduces by 30%, and wheat straw coarse powder is made through broken, attritioning, screening process, reaches 700 μm of partial size, moisture content 18%；
Step 3: the preparation of reed fiber: taking the reed stalk dried and without mildew, be chopped into 5mm segment first, in 50 DEG C of environment
At a temperature of in 4% NaOH solution impregnate 19h, rinsed, dry the hemicellulose level of reed stalk is made to reduce by 30%；Again by reed
Reed stalk impregnates 2h with " acetic acid+hydrogen peroxide " solution of 1:1 under 46 DEG C of environment temperatures, is rinsed, dries and make the wooden of reed stalk
Cellulose content reduces by 30%；It pulverized, be sieved by the reed rod of above-mentioned processing, the reed fiber that partial size is 5mm is made, adjusting contains
Water rate is to 16%；
Step 4: ingredient: taking step 1~3 acquisitions Chinese pennisetum micro mist, wheat straw coarse powder, reed fiber and nano oxidized copper powder, gather
Ethylene glycol -400 meets the mass percent of each component: Chinese pennisetum micro mist 45%, reed fiber 14%, is received wheat straw coarse powder 26%
Rice cupric oxide powder 13%, polyethylene glycol -400 2%；
Step 5: the preparation of the wooden alloy powder: the whole Chinese pennisetum micro mists and whole nano oxidized copper powders for taking step 4 to obtain are put into
High-energy ball milling feed bin, the mutual frictional heat generation of pellet cause Chinese pennisetum micro mist weightless and partially carbonized, nascent state carbon with it is nano oxidized
Copper powder occurs reduction reaction and generates Nanometer Copper, and it is standby that newborn Nanometer Copper with Chinese pennisetum micro powder granule mutually diffuses to form the wooden alloy powder
With, in the above process, Ball-milling Time 160min, material ball ratio 1:50, dry grinding, hard alloy ball radius 12mm, revolving speed 300r/
min；
Step 6: material mixing: whole wheat straw coarse powder, whole reed fibers and the step 5 for taking step 4 to obtain first obtain complete
Portion's wood alloy powder is put into vertical double helix conical mixer and is slightly mixed, and coefficient 0.5, slightly do time 10min, until meat
Eye observation is uniform；Then be added step 4 obtain whole polyethylene glycol-400 be put into spiral strong mixing vertical conical batch mixer into
Row essence mixing, it is spare to obtain uniform mixture for material filling coefficient 0.5, mixing time 25min；
Step 7: warm-forming: it is intracavitary in nitrogen to pour into rigid special forming mould tool type for the whole mixed powders for taking step 6 to obtain
Protection is lower to implement hot forming, 200 DEG C of forming temperature, pressure 180MPa, heat-insulation pressure keeping time 80min, protective atmosphere nitrogen it is pure
Degree is 99.999%, to obtain Strengthening and Toughening nano cupric oxide in-situ reducing composite wooden material green compact；
Step 8: subzero treatment: by the composite wooden material green compact that step 7 obtains be put into liquid nitrogen vaporization formula cold treatment equipment into
Row subzero treatment, technological parameter are as follows: -165 DEG C of cryogenic temperature, 2 DEG C/min of rate of temperature fall, soaking time 4h.
The nano oxidized copper powder is by CuCl2·2H2The pure massage of O and the analysis of NaOH you mixed than 1:2 after
Grinding 50min is made at room temperature, granularity 32nm, purity=99.99%.
There is class bronze metal gloss by the composite wooden material of the present invention that embodiment 4 obtains, specific gravity is only bronze
15%, static bending strength=140MPa, electromagnet shield effect=65dB, water absorption rate=0.3%, coefficient of friction 0.18 are fine and close, tough and tensile,
Texture is gentle, graceful craftwork, Garden Engineering and in terms of application prospect it is huge, it can also be used to electromagnetic screen
It covers, machinery is built and the fields such as civil construction.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
Used herein a specific example illustrates the principle and implementation of the invention, the explanation of above example
It is merely used to help understand method and its core concept of the invention.The above is only a preferred embodiment of the present invention, it answers
When pointing out due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, can also incited somebody to action
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved structure by invention
Think and technical solution directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (9)
1. a kind of nano cupric oxide in-situ reducing composite wooden material, which is characterized in that the nano cupric oxide in-situ reducing wood
Composite material is made of following five kinds of components, and each component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist 40%~50%, wheat
Straw coarse powder 20%~30%, reed fiber 10%~20%, nano oxidized copper powder 10%~15%, polyethylene glycol-400 0.5%~3%.
2. a kind of nano cupric oxide in-situ reducing composite wooden material according to claim 1, which is characterized in that described each
Component, which is calculated in mass percent, is respectively as follows: Chinese pennisetum micro mist 45%, wheat straw coarse powder 26%, reed fiber 14%, nano oxidized copper powder
13%, polyethylene glycol-400 2%.
3. a kind of nano cupric oxide in-situ reducing composite wooden material according to claim 1 or 2, which is characterized in that institute
The partial size for stating Chinese pennisetum micro mist is 45~75 μm, moisture content 12%~15%.
4. a kind of nano cupric oxide in-situ reducing composite wooden material according to claim 1 or 2, which is characterized in that institute
The wheat straw coarse powder stated is obtained using following step: by wheat stalk under 40~60 DEG C of environment temperatures with 3%~5% NaOH solution
Impregnate 15~for 24 hours, rinsed, dry after so that the hemicellulose level of wheat stalk is reduced by 20%~30%, through broken, attritioning, sieve
Wheat straw coarse powder is made in operation break-down, reaches 425~850 μm of partial size, moisture content 15%~20%.
5. a kind of nano cupric oxide in-situ reducing composite wooden material according to claim 1 or 2, which is characterized in that institute
The reed fiber stated is obtained using following step: reed stalk being chopped into 4~6mm segment, is used under 40~60 DEG C of environment temperatures
3%~5% NaOH solution immersion 15~for 24 hours, it rinsed, dry the hemicellulose level reduction by 20%~30% for making reed stalk；Again
Reed stalk is impregnated into 1~3h with " acetic acid+hydrogen peroxide " solution of 1:1 under 40~50 DEG C of environment temperatures, rinsed, dried and make reed
The content of lignin of reed stalk reduces by 20%~30%；It pulverized, be sieved by the reed rod of above-mentioned processing, it is 4~6mm that partial size, which is made,
Reed fiber, adjust moisture content to 15%~20%.
6. a kind of nano cupric oxide in-situ reducing composite wooden material according to claim 1 or 2, which is characterized in that institute
Nano oxidized copper powder is stated by CuCl2·2H2The pure massage of O and the analysis of NaOH you mixed than 1:2 after grind 30 at room temperature~
60min is made, and granularity is 30~40nm, purity >=99.9%.
7. the preparation method of any one nano cupric oxide in-situ reducing composite wooden material as described in claim 1-6,
It is characterized in that, comprising the following steps:
The preparation of step 1, Chinese pennisetum micro mist: take Chinese pennisetum cleaned, dried, shred after dry, then by stalk crasher, mill
Micro mist is made through coarse crushing, attritioning, corase grinding, fine grinding, screening process in chaff machine, flour milling machine, makes 45~75 μm of its grain size of micropowder, aqueous
Rate 12%~15%；
The preparation of step 2, wheat straw coarse powder: the wheat stalk dried and without mildew is taken, first by wheat stalk in 40~60 DEG C of rings
At a temperature of border with 3%~5% NaOH solution impregnate 15~for 24 hours, rinsed, dry after the hemicellulose level of wheat stalk drops
Low 20%~30%, wheat straw coarse powder is made through broken, attritioning, screening process, reaches 425~850 μm of partial size, moisture content 15%
~20%；
The preparation of step 3, reed fiber: the reed stalk dried and without mildew is taken, 4~6mm segment is chopped into first, 40~60
15 are impregnated with 3%~5% NaOH solution under DEG C environment temperature~for 24 hours, it rinsed, dry and drop the hemicellulose level of reed stalk
Low 20%~30%；Reed stalk is impregnated into 1~3h, warp with " acetic acid+hydrogen peroxide " solution of 1:1 under 40~50 DEG C of environment temperatures again
Rinsing, drying make the content of lignin of reed stalk reduce by 20%~30%；It pulverized, be sieved by the reed rod of above-mentioned processing, made
The reed fiber for being 4~6mm at partial size adjusts moisture content to 15%~20%；
Step 4, ingredient: take step 1-3 obtain Chinese pennisetum micro mist, wheat straw coarse powder, reed fiber and nano oxidized copper powder, poly- second
Glycol -400 meets the mass percent of each component: Chinese pennisetum micro mist 40%~50%, wheat straw coarse powder 20%~30%, reed are fine
Tie up 10%~20%, nano oxidized copper powder 10%~15%, polyethylene glycol-400 0.5%~3%；
The preparation of step 5, the wooden alloy powder: the whole Chinese pennisetum micro mists and whole nano oxidized copper powders for taking step 4 to obtain are put into
High-energy ball milling feed bin, the mutual frictional heat generation of pellet cause Chinese pennisetum micro mist weightless and partially carbonized, nascent state carbon with it is nano oxidized
Copper powder occurs reduction reaction and generates Nanometer Copper, and it is standby that newborn Nanometer Copper with Chinese pennisetum micro powder granule mutually diffuses to form the wooden alloy powder
With, in the above process, 120~180min of Ball-milling Time, material ball ratio 1:50, dry grinding, hard alloy ball radius 12mm, revolving speed
300r/min；
Step 6, material mixing: whole wheat straw coarse powder, whole reed fibers and the step 5 for taking step 4 to obtain first obtain complete
Portion's wood alloy powder is slightly mixed, until naked-eye observation is uniform；Then whole polyethylene glycol-400 that step 4 obtains are added to carry out
Essence mixing, it is spare to obtain uniform mixture；
Step 7, warm-forming: it is intracavitary in nitrogen to pour into rigid special forming mould tool type for the whole mixed powders for taking step 6 to obtain
Protection is lower to implement hot forming, to obtain Strengthening and Toughening nano cupric oxide in-situ reducing composite wooden material green compact；
Step 8, subzero treatment: the composite material green compact that step 7 obtains is put into liquid nitrogen vaporization formula cold treatment equipment and is carried out deeply
Cold treatment, technological parameter are as follows: cryogenic temperature -150~-185 DEG C, 1~3 DEG C/min of rate of temperature fall, 3~5h of soaking time.
8. a kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, feature exist according to claim 7
In the thick mixing in the step 6 uses vertical double helix conical mixer, and coefficient 0.5, slightly do time 10min；Essence is mixed
It closes and uses spiral strong mixing vertical conical batch mixer, material filling coefficient 0.4~0.6,15~30min of mixing time.
9. a kind of preparation method of nano cupric oxide in-situ reducing composite wooden material, feature exist according to claim 7
In, hot forming in the step 7, process conditions are as follows: 180~220 DEG C of forming temperature, 160~200MPa of pressure, heat preservation are protected
Press 45~90min of time, the purity of protective atmosphere nitrogen is 99.999%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111136748A (en) * | 2020-01-10 | 2020-05-12 | 台州学院 | Wood fiber manufacturing method |
| CN112409860A (en) * | 2020-11-26 | 2021-02-26 | 湖南连心科技有限公司 | Decorative fluorocarbon powder coating and preparation process thereof |
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| CN100999091A (en) * | 2006-12-26 | 2007-07-18 | 南京林业大学 | Manufacturing method of wood/hybrid Chinese pennisetum composite artificial board |
| CN203994099U (en) * | 2014-08-14 | 2014-12-10 | 南京林业大学 | Melmac resin dipping thin wood veneer bean gum Chinese pennisetum wood-based plate |
| CN105734317A (en) * | 2016-04-06 | 2016-07-06 | 中南林业科技大学 | Biomass copper-carbon composite material based on fast-growing grass and preparation technology of biomass copper-carbon composite material |
| CN108407034A (en) * | 2018-03-22 | 2018-08-17 | 中南林业科技大学 | A kind of wooden functional material and preparation method thereof that metallizes |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999091A (en) * | 2006-12-26 | 2007-07-18 | 南京林业大学 | Manufacturing method of wood/hybrid Chinese pennisetum composite artificial board |
| CN203994099U (en) * | 2014-08-14 | 2014-12-10 | 南京林业大学 | Melmac resin dipping thin wood veneer bean gum Chinese pennisetum wood-based plate |
| CN105734317A (en) * | 2016-04-06 | 2016-07-06 | 中南林业科技大学 | Biomass copper-carbon composite material based on fast-growing grass and preparation technology of biomass copper-carbon composite material |
| CN108407034A (en) * | 2018-03-22 | 2018-08-17 | 中南林业科技大学 | A kind of wooden functional material and preparation method thereof that metallizes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111136748A (en) * | 2020-01-10 | 2020-05-12 | 台州学院 | Wood fiber manufacturing method |
| CN112409860A (en) * | 2020-11-26 | 2021-02-26 | 湖南连心科技有限公司 | Decorative fluorocarbon powder coating and preparation process thereof |
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