CN110154198A - A kind of production method of Ultrathin high density fiberboard - Google Patents
A kind of production method of Ultrathin high density fiberboard Download PDFInfo
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- CN110154198A CN110154198A CN201910392255.XA CN201910392255A CN110154198A CN 110154198 A CN110154198 A CN 110154198A CN 201910392255 A CN201910392255 A CN 201910392255A CN 110154198 A CN110154198 A CN 110154198A
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- Prior art keywords
- high density
- density fiberboard
- production method
- montmorillonite
- wood
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- 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
-
- 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
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- 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
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
-
- 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
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- 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
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
Abstract
The invention discloses a kind of production methods of Ultrathin high density fiberboard, the specific steps are as follows: 1) nanmeter antimong trioxide/PP composite fibre is added after log material boiling softening and carries out defibrator process, is heat-treated after dry, is crushed, refines to obtain wood powder fiber；2) wood powder fiber is placed in glue mixer, and sizing material is sprayed to the surface of wood powder fiber, then add montmorillonite/zirconium dioxide nano-complex particle and maleic anhydride Grafting-coupling Agent, be mixed and material is made；3) material mat formation forming slab with spreading machine, hot-pressing processing is carried out after precompressed, Ultrathin high density fiberboard can be obtained.The present invention uses raw material of the log material as fiberboard, it is processed by technique so that sizing material and each function additive are sufficiently combined with wood-fibred, so that preparation process more high-efficiency environment friendly, the high density fiberboard has intensity big, density is high, ultra-thin, is unlikely to deform, low-carbon environment-friendly, durable feature.
Description
Technical field
The invention belongs to fiberboard processing technique fields, and in particular to a kind of production method of Ultrathin high density fiberboard.
Background technique
In recent years, high density fiberboard industry in China's develops very fast, the dependence due to medium density fiberboard enterprise to wood raw material
Very big, the production in short supply for having seriously affected fiberboard of wood raw material of property, so gradually replaced high density fiberboard.
High density fiberboard is to apply Lauxite or other synthesis tree using wood-fibred or other plant fiber as raw material
A kind of plate that rouge is pressed under conditions of heating and pressurizeing.High density fiberboard is compatible with its excellent physical properties
All advantages of medium density fiberboard are widely used in horizontal indoor exterior, office, high-grade family property, sound equipment, sedan limousine upholstery,
Also act as the making material of computer room antistatic floor, skirting, security door, wallboard, partition etc..It or package
Good material.In recent years it is even more that high-grade hardwood is replaced directly to be processed into composite floor board, consolidated floor etc., is widely used in indoor dress
Repair decoration, bright and clean surface, solid quality, the favorable comment of the service life of overlength acquisition user.Currently on the market highly dense
Spending fiberboard, that there are holes is larger, and adsorptivity is poor, the defect of unstable chemcial property.
A kind of high performance fiberboard how is prepared, reaches national environmental protection class requirement, and with ultra-thin, superelevation is close
The performances such as degree use it widely to be conducive to the large-scale production of this high-end plate of high density fiberboard
As the technical problem overcome in a hurry in industry.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of production method of Ultrathin high density fiberboard is provided.
The present invention is achieved by the following technical solutions:
A kind of production method of Ultrathin high density fiberboard, specifically the production method is as follows:
1) boiling softens after being sliced log material, and nanmeter antimong trioxide/PP composite fibre is added thereto, is placed in defibrator
Middle carry out defibrator process, obtains wood-fibred defibrination, then obtains wood-fibred through spontaneously drying, wood-fibred is put into electric heating constant temperature bellows
In, it is heat-treated 3-5h at 80-140 DEG C, then crushed, refined 50-100 mesh, obtain wood powder fiber；
2) wood powder fiber is placed in glue mixer, and sizing material is sprayed to the surface of wood powder fiber, then add montmorillonite/bis-
Material is made so that glue mixing is uniform in zirconia nanopowder compound particle and maleic anhydride Grafting-coupling Agent, stirring；
3) material mat formation forming slab band with spreading machine, slab band is then subjected to precompressed under the pressure of 5-7MPa,
The slab with a thickness of 3-5mm is obtained, the slab after precompressed is then subjected to hot-pressing processing, control hot pressing temperature is in hot pressing
150-180 DEG C, hot pressing pressure 180-230bar, hot pressing time 5-8min can be obtained Ultrathin high density fiberboard.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), controls in the digestion process
Cooking pressure is 0.6-0.8MPa, digestion time 4-5min；The nanmeter antimong trioxide/PP composite fibre additive amount is original
The 5-8% of wood material weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), the oxidation of nanometer three two
Antimony/PP composite fibre the preparation method is as follows:
1) nanmeter antimong trioxide is added in ball mill, adds KH550 silane coupling agent and deionized water, be in revolving speed
Ball milling 10-15h under 400-600r/min, ratio of grinding media to material 10:1, wherein the additive amount of KH550 silane coupling agent is the oxidation of nanometer three
The 2-5% of two antimony weight, the additive amount of deionized water and the envelope-bulk to weight ratio of nanmeter antimong trioxide are 10-15ml/10g；
2) treated nanmeter antimong trioxide is carried out ball milling with polyacrylic acid to be blended, rotational speed of ball-mill 300-400r/
Then blend is melted by screw rod melt extruded spinning machine, is squeezed out by min, Ball-milling Time 5-8h, ratio of grinding media to material 10:1
Fiber is cooled down after spinning head sprays using ring cold wind, can be prepared by the compound fibre of nanmeter antimong trioxide/PP by spinning
Dimension, wherein the additive amount of nanmeter antimong trioxide is the 3-6% of polyacrylic acid weight, and preheating zone is 190-230 DEG C, and melting zone is
210-250 DEG C, compressional zone is 230-280 DEG C, and metering zone is 220-270 DEG C, and spinning temperature is 200-260 DEG C, ring cold wind temperature
It is 20-40 DEG C, the bore dia of spray head silk is 0.2-0.6mm, draw ratio 6-15.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the sizing material is epoxy resin
Any one in adhesive, organic silicon resin adhesive or unsaturated polyester (UP) adhesive；The additive amount of the sizing material is that wood powder is fine
Tie up the 5-10% of weight；The montmorillonite/zirconium dioxide nano-complex particle additive amount is the 2-3% of wood powder fibre weight；Institute
The additive amount for stating maleic anhydride Grafting-coupling Agent is the 0.5-1% of wood powder fibre weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the montmorillonite/titanium dioxide
Zirconium nano-complex particle the preparation method is as follows:
1) 80-130 parts of cetyl trimethylammonium bromide aqueous solution are taken, 6-8 parts of sodium hydroxides are added, are made mixed after stirring and dissolving
Then Heshui solution takes 5-8 parts of montmorillonite, is added in mixed aqueous solution, the vibrating dispersion 30- under 200-300W ultrasonic wave
Then 50min is added 20-40 part eight and is hydrated zirconium oxychloride, pH is adjusted to 10-11 by the sodium hydroxide solution that 1-5mol/L is added dropwise,
It is then heated to 160-200 DEG C, hydro-thermal reaction 10-15h；
2) to after reaction, be cooled to room temperature, 1-1.5 parts of hydrazine hydrates are then added, are stirred in the case where revolving speed is 100-150r/min
20-40min is mixed, is then heated to 60-90 DEG C, isothermal reaction 12-16h, utilizes dehydrated alcohol and deionized water after reaction
To product centrifuge washing until clear liquid is colourless, then dry in 50-70 DEG C of vacuum drying oven to constant weight, can be prepared by montmorillonite/
Zirconium dioxide nano-complex particle.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein montmorillonite/zirconium dioxide nano-complex particle
Preparation step 1) in, the quality percentage of cetyl trimethylammonium bromide in the cetyl trimethylammonium bromide aqueous solution
Number is 10-15%.
The present invention has the advantage that compared with prior art
1. the high density fiberboard being process using present invention process, the raw material using log material as fiberboard, together
When by add have highly shrinkable synthetic fibers and nano-complex particle, by technique process so that sizing material and each function
Energy auxiliary agent is sufficiently combined with wood-fibred, so that preparation process more high-efficiency environment friendly, which has strong
Degree is big, and density is high, ultra-thin, is unlikely to deform, low-carbon environment-friendly, durable feature；It will add after log material boiling softening first
Enter nanmeter antimong trioxide/PP composite fibre and carry out defibrator process, nanmeter antimong trioxide/PP composite fibre of addition can increase original
Frictional force between wood material and grinding to accelerate the separation of wood-fibred in log material, and can be increased by defibrator process
The roughness on wood-fibred surface, raising wood-fibred and nanmeter antimong trioxide/PP composite fibre mechanical snap degree, and due to
Nanmeter antimong trioxide particle size is small, large specific surface area, have stronger surface can, adsorption a large amount of hydroxyl, make
Obtaining nanmeter antimong trioxide/PP composite fibre can be got up with the oxygen-containing functional group on wood-fibred surface by Hydrogenbond, thus
Binding force between the two is improved, so that nanmeter antimong trioxide/it can be very good commissure between PP composite fibre and wood-fibred
Together；It is heat-treated secondly, wood-fibred is put into electric heating constant temperature bellows, nanmeter antimong trioxide/PP composite fibre
It is shunk automatically in heat treatment, shortens intermolecular distance in wood-fibred, to reduce the gap of wood-fibred, it is fine to increase wood
The density of dimension；It is eventually adding montmorillonite/zirconium dioxide nano-complex particle to be stirred with maleic anhydride Grafting-coupling Agent, nanometer
Macromolecular chain in antimony oxide/PP composite fibre can be intercalation into montmorillonite/zirconium dioxide nano-complex particle interlayer, make
Obtaining montmorillonite/zirconium dioxide nano-complex particle can generate with the macromolecular chain in nanmeter antimong trioxide/PP composite fibre
Physical action and combine closely, in montmorillonite/zirconium dioxide nano-complex particle and nanmeter antimong trioxide/PP composite fibre
The sliding that macromolecular chain combines the binding site formed that fiberboard obtained is made to be able to suppress strand when by external force,
Can generate crazing when by external impacts, consume part impact energy, and touched during crazing extends its
Crazing can be prevented to develop into crackle when his montmorillonite/zirconium dioxide nano-complex particle, so that the impact for improving fiberboard is tough
Property；The maleic anhydride Grafting-coupling Agent of addition is capable of increasing montmorillonite/zirconium dioxide nano-complex particle and wood powder fiber interface
Compatibility is concentrated so that montmorillonite/zirconium dioxide nano-complex particle can preferably disperse stress in fiberboard, thus
Improve the mechanical properties such as impact strength, tensile strength and the bending strength of fiberboard.
2. the preparation method of fiberboard provided by the invention, wherein the nanmeter antimong trioxide added /PP composite fibre tool
There is highly shrinkable, the gap for reducing wood-fibred can be combined with wood-fibred, increases the density of wood-fibred, firstly, to receiving
Rice antimony oxide is modified, modified through KH550 silane coupling agent surface, KH550 silane coupling agent and the oxidation of nanometer three two
The oxygen atom on antimony surface is combined in the form of hydrogen bond with N-H key, so that nanmeter antimong trioxide surface is coated on largely
KH550, so that the dispersibility of nanmeter antimong trioxide is improved, so that nanmeter antimong trioxide is uniformly dispersed, it is existing there is no reuniting
As, but also the interface compatibility of nanmeter antimong trioxide Yu PP matrix can be improved；Then by treated three oxygen of nanometer
Change and carries out melt blending after two antimony are blended with polyacrylic acid ball milling, the C- on nanmeter antimong trioxide particle surface silane coupling agent
- the CH of O-C and PP3It is chemically reacted, thus generate C=O key to being combined together, the nanmeter antimong trioxide of addition
The crystallinity of PP matrix can be improved as heterogeneous nucleation point in PP matrix, refine crystal grain, reduce crystallite dimension, so that
Nanmeter antimong trioxide/PP composite fibre percent thermal shrinkage increases.
3. the preparation method of fiberboard provided by the invention, wherein the montmorillonite added/zirconium dioxide nano-complex particle,
Using the multi-layer sheet structure of montmorillonite, it is attached on the surface of montmorillonite so that nano zirconium dioxide is evengranular, to improve
The uniformity of nano zirconium dioxide dispersion, avoids the occurrence of agglomeration, takes off simultaneously because nano zirconium dioxide particle is attached to illiteracy
On the surface of soil, the good barrier shell for preventing to be crosslinked between montmorillonite-based nano piece can be become, it can be to avoid montmorillonite-based nano piece
Between because being cross-linked with each other lead to the reduction of surface interlamellar spacing, to be conducive to big in nanmeter antimong trioxide/PP composite fibre
Strand is intercalation into montmorillonite/zirconium dioxide nano-complex particle interlayer, is conducive between the two combine closely.
Specific embodiment
Below with reference to specific implementation method, the present invention is described further.
Embodiment 1
A kind of production method of Ultrathin high density fiberboard, specifically the production method is as follows:
1) boiling softens after being sliced log material, and nanmeter antimong trioxide/PP composite fibre is added thereto, is placed in defibrator
Middle carry out defibrator process, obtains wood-fibred defibrination, then obtains wood-fibred through spontaneously drying, wood-fibred is put into electric heating constant temperature bellows
In, it is heat-treated 5h at 80 DEG C, then crushed, refined 50 meshes, obtain wood powder fiber；
2) wood powder fiber is placed in glue mixer, and sizing material is sprayed to the surface of wood powder fiber, then add montmorillonite/bis-
Material is made so that glue mixing is uniform in zirconia nanopowder compound particle and maleic anhydride Grafting-coupling Agent, stirring；
3) material mat formation forming slab band with spreading machine, then slab band is subjected to precompressed under the pressure of 5MPa, obtained
To the slab with a thickness of 5mm, the slab after precompressed is then subjected to hot-pressing processing, control hot pressing temperature is 150 in hot pressing
DEG C, Ultrathin high density fiberboard can be obtained in hot pressing pressure 180bar, hot pressing time 8min.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), controls in the digestion process
Cooking pressure is 0.6MPa, digestion time 5min；The nanmeter antimong trioxide/PP composite fibre additive amount is log material
The 5% of weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), the oxidation of nanometer three two
Antimony/PP composite fibre the preparation method is as follows:
1) nanmeter antimong trioxide is added in ball mill, adds KH550 silane coupling agent and deionized water, be in revolving speed
Ball milling 15h under 400r/min, ratio of grinding media to material 10:1, wherein the additive amount of KH550 silane coupling agent is nanmeter antimong trioxide weight
The 2% of amount, the additive amount of deionized water and the envelope-bulk to weight ratio of nanmeter antimong trioxide are 10ml/10g；
2) treated nanmeter antimong trioxide is carried out ball milling with polyacrylic acid to be blended, rotational speed of ball-mill 300r/min, ball
Consume time 8h, ratio of grinding media to material 10:1, is then melted blend by screw rod melt extruded spinning machine, extruding spinning, will
Fiber is cooled down after spinning head sprays using ring cold wind, can be prepared by nanmeter antimong trioxide/PP composite fibre, wherein receiving
The additive amount of rice antimony oxide is the 3% of polyacrylic acid weight, and preheating zone is 190 DEG C, and melting zone is 210 DEG C, and compressional zone is
230 DEG C, metering zone is 220 DEG C, and spinning temperature is 200 DEG C, and ring cold wind temperature is 20 DEG C, and the bore dia of spray head silk is 0.2mm, long
Diameter ratio is 6.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the sizing material is epoxy resin
Any one in adhesive, organic silicon resin adhesive or unsaturated polyester (UP) adhesive；The additive amount of the sizing material is that wood powder is fine
Tie up the 5% of weight；The montmorillonite/zirconium dioxide nano-complex particle additive amount is the 2% of wood powder fibre weight；The Malaysia
The additive amount of acid anhydrides Grafting-coupling Agent is the 0.5% of wood powder fibre weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the montmorillonite/titanium dioxide
Zirconium nano-complex particle the preparation method is as follows:
1) 80 parts of cetyl trimethylammonium bromide aqueous solution are taken, 6 parts of sodium hydroxides are added, it is water-soluble that mixing is made after stirring and dissolving
Then liquid takes 5 parts of montmorillonite, is added in mixed aqueous solution, vibrating dispersion 50min, is then added 20 under 200W ultrasonic wave
Part eight is hydrated zirconium oxychlorides, and pH is adjusted to 10, is then heated to 160 DEG C, hydro-thermal reaction by the sodium hydroxide solution that 1mol/L is added dropwise
15h；
2) to after reaction, be cooled to room temperature, 1 part of hydrazine hydrate is then added, stirs 40min in the case where revolving speed is 100r/min,
Be then heated to 60 DEG C, isothermal reaction 16h, after reaction using dehydrated alcohol and deionized water to product centrifuge washing until
Clear liquid is colourless, then dries in 50 DEG C of vacuum drying ovens to constant weight, can be prepared by montmorillonite/zirconium dioxide nano-complex particle.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein montmorillonite/zirconium dioxide nano-complex particle
Preparation step 1) in, the quality percentage of cetyl trimethylammonium bromide in the cetyl trimethylammonium bromide aqueous solution
Number is 10%.
Embodiment 2
A kind of production method of Ultrathin high density fiberboard, specifically the production method is as follows:
1) boiling softens after being sliced log material, and nanmeter antimong trioxide/PP composite fibre is added thereto, is placed in defibrator
Middle carry out defibrator process, obtains wood-fibred defibrination, then obtains wood-fibred through spontaneously drying, wood-fibred is put into electric heating constant temperature bellows
In, it is heat-treated 4h at 110 DEG C, then crushed, refined 80 meshes, obtain wood powder fiber；
2) wood powder fiber is placed in glue mixer, and sizing material is sprayed to the surface of wood powder fiber, then add montmorillonite/bis-
Material is made so that glue mixing is uniform in zirconia nanopowder compound particle and maleic anhydride Grafting-coupling Agent, stirring；
3) material mat formation forming slab band with spreading machine, then slab band is subjected to precompressed under the pressure of 6MPa, obtained
To the slab with a thickness of 4mm, the slab after precompressed is then subjected to hot-pressing processing, control hot pressing temperature is 170 in hot pressing
DEG C, Ultrathin high density fiberboard can be obtained in hot pressing pressure 200bar, hot pressing time 7min.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), controls in the digestion process
Cooking pressure is 0.7MPa, digestion time 4min；The nanmeter antimong trioxide/PP composite fibre additive amount is log material
The 7% of weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), the oxidation of nanometer three two
Antimony/PP composite fibre the preparation method is as follows:
1) nanmeter antimong trioxide is added in ball mill, adds KH550 silane coupling agent and deionized water, be in revolving speed
Ball milling 13h under 500r/min, ratio of grinding media to material 10:1, wherein the additive amount of KH550 silane coupling agent is nanmeter antimong trioxide weight
The 3% of amount, the additive amount of deionized water and the envelope-bulk to weight ratio of nanmeter antimong trioxide are 12ml/10g；
2) treated nanmeter antimong trioxide is carried out ball milling with polyacrylic acid to be blended, rotational speed of ball-mill 350r/min, ball
Consume time 7h, ratio of grinding media to material 10:1, is then melted blend by screw rod melt extruded spinning machine, extruding spinning, will
Fiber is cooled down after spinning head sprays using ring cold wind, can be prepared by nanmeter antimong trioxide/PP composite fibre, wherein receiving
The additive amount of rice antimony oxide is the 5% of polyacrylic acid weight, and preheating zone is 210 DEG C, and melting zone is 230 DEG C, and compressional zone is
250 DEG C, metering zone is 260 DEG C, and spinning temperature is 230 DEG C, and ring cold wind temperature is 30 DEG C, and the bore dia of spray head silk is 0.5mm, long
Diameter ratio is 10.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the sizing material is epoxy resin
Any one in adhesive, organic silicon resin adhesive or unsaturated polyester (UP) adhesive；The additive amount of the sizing material is that wood powder is fine
Tie up the 7% of weight；The montmorillonite/zirconium dioxide nano-complex particle additive amount is the 2% of wood powder fibre weight；The Malaysia
The additive amount of acid anhydrides Grafting-coupling Agent is the 0.8% of wood powder fibre weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the montmorillonite/titanium dioxide
Zirconium nano-complex particle the preparation method is as follows:
1) 110 parts of cetyl trimethylammonium bromide aqueous solution are taken, 7 parts of sodium hydroxides are added, mixing water is made after stirring and dissolving
Then solution takes 6 parts of montmorillonite, is added in mixed aqueous solution, vibrating dispersion 40min, is then added under 250W ultrasonic wave
PH is adjusted to 11, is then heated to 180 DEG C, hydro-thermal is anti-by 30 part of eight hydration zirconium oxychloride, the sodium hydroxide solution that 3mol/L is added dropwise
Answer 12h；
2) to after reaction, be cooled to room temperature, 1.3 parts of hydrazine hydrates are then added, are stirred in the case where revolving speed is 130r/min
30min is then heated to 80 DEG C, isothermal reaction 15h, is washed after reaction using dehydrated alcohol and deionized water to product centrifugation
It washs until clear liquid is colourless, then it is nano combined to can be prepared by montmorillonite/zirconium dioxide to constant weight for drying in 60 DEG C of vacuum drying ovens
Particle.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein montmorillonite/zirconium dioxide nano-complex particle
Preparation step 1) in, the quality percentage of cetyl trimethylammonium bromide in the cetyl trimethylammonium bromide aqueous solution
Number is 13%.
Embodiment 3
A kind of production method of Ultrathin high density fiberboard, specifically the production method is as follows:
1) boiling softens after being sliced log material, and nanmeter antimong trioxide/PP composite fibre is added thereto, is placed in defibrator
Middle carry out defibrator process, obtains wood-fibred defibrination, then obtains wood-fibred through spontaneously drying, wood-fibred is put into electric heating constant temperature bellows
In, it is heat-treated 3h at 140 DEG C, then crushed, refine and sieve with 100 mesh sieve, obtain wood powder fiber；
2) wood powder fiber is placed in glue mixer, and sizing material is sprayed to the surface of wood powder fiber, then add montmorillonite/bis-
Material is made so that glue mixing is uniform in zirconia nanopowder compound particle and maleic anhydride Grafting-coupling Agent, stirring；
3) material mat formation forming slab band with spreading machine, then slab band is subjected to precompressed under the pressure of 7MPa, obtained
To the slab with a thickness of 3mm, the slab after precompressed is then subjected to hot-pressing processing, control hot pressing temperature is 180 in hot pressing
DEG C, Ultrathin high density fiberboard can be obtained in hot pressing pressure 230bar, hot pressing time 5min.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), controls in the digestion process
Cooking pressure is 0.8MPa, digestion time 4min；The nanmeter antimong trioxide/PP composite fibre additive amount is log material
The 8% of weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 1), the oxidation of nanometer three two
Antimony/PP composite fibre the preparation method is as follows:
1) nanmeter antimong trioxide is added in ball mill, adds KH550 silane coupling agent and deionized water, be in revolving speed
Ball milling 10h under 600r/min, ratio of grinding media to material 10:1, wherein the additive amount of KH550 silane coupling agent is nanmeter antimong trioxide weight
The 5% of amount, the additive amount of deionized water and the envelope-bulk to weight ratio of nanmeter antimong trioxide are 15ml/10g；
2) treated nanmeter antimong trioxide is carried out ball milling with polyacrylic acid to be blended, rotational speed of ball-mill 400r/min, ball
Consume time 5h, ratio of grinding media to material 10:1, is then melted blend by screw rod melt extruded spinning machine, extruding spinning, will
Fiber is cooled down after spinning head sprays using ring cold wind, can be prepared by nanmeter antimong trioxide/PP composite fibre, wherein receiving
The additive amount of rice antimony oxide is the 6% of polyacrylic acid weight, and preheating zone is 230 DEG C, and melting zone is 250 DEG C, and compressional zone is
280 DEG C, metering zone is 270 DEG C, and spinning temperature is 260 DEG C, and ring cold wind temperature is 40 DEG C, and the bore dia of spray head silk is 0.6mm, long
Diameter ratio is 15.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the sizing material is epoxy resin
Any one in adhesive, organic silicon resin adhesive or unsaturated polyester (UP) adhesive；The additive amount of the sizing material is that wood powder is fine
Tie up the 10% of weight；The montmorillonite/zirconium dioxide nano-complex particle additive amount is the 3% of wood powder fibre weight；The horse
The additive amount of maleic anhydride grafted coupling agent is the 1% of wood powder fibre weight.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein in step 2, the montmorillonite/titanium dioxide
Zirconium nano-complex particle the preparation method is as follows:
1) 130 parts of cetyl trimethylammonium bromide aqueous solution are taken, 8 parts of sodium hydroxides are added, mixing water is made after stirring and dissolving
Then solution takes 8 parts of montmorillonite, is added in mixed aqueous solution, vibrating dispersion 30min, is then added under 300W ultrasonic wave
PH is adjusted to 11, is then heated to 200 DEG C, hydro-thermal is anti-by 40 part of eight hydration zirconium oxychloride, the sodium hydroxide solution that 5mol/L is added dropwise
Answer 10h；
2) to after reaction, be cooled to room temperature, 1.5 parts of hydrazine hydrates are then added, are stirred in the case where revolving speed is 150r/min
20min is then heated to 90 DEG C, isothermal reaction 12h, is washed after reaction using dehydrated alcohol and deionized water to product centrifugation
It washs until clear liquid is colourless, then it is nano combined to can be prepared by montmorillonite/zirconium dioxide to constant weight for drying in 70 DEG C of vacuum drying ovens
Particle.
Preferably, a kind of production method of Ultrathin high density fiberboard, wherein montmorillonite/zirconium dioxide nano-complex particle
Preparation step 1) in, the quality percentage of cetyl trimethylammonium bromide in the cetyl trimethylammonium bromide aqueous solution
Number is 15%.
Comparative example 1: nanmeter antimong trioxide/PP composite fibre in removal step 1) is substituted, remaining and reality with PP fiber
It is identical to apply example 1.
Comparative example 2: boiling softens after log material is sliced, and is placed in defibrator and carries out defibrator process, obtains wood-fibred defibrination,
Then nanmeter antimong trioxide/PP composite fibre is added thereto, obtains wood-fibred through spontaneously drying after being mixed evenly,
It is remaining same as Example 1.
Comparative example 3: the heat treatment in removal step 1), remaining is same as Example 1.
Comparative example 4: montmorillonite/zirconium dioxide nano-complex particle in removal step 2, remaining is same as Example 1.
Comparative example 5: the maleic anhydride Grafting-coupling Agent in removal step 2, remaining is same as Example 1.
Test example: be respectively adopted the processing technology that embodiment 1-3 and comparative example 1-5 are provided be made specification be 1220 ×
The fiberboard of 2130mm, fiberboard with a thickness of 2.0mm, then fiberboard is tested for the property, as a result record it is as follows:
Note: static bending strength and modulus of elasticity are carried out by measuring method as defined in GB/T11718-2009 6.8；Internal bond strength is pressed
Internal bond strength measuring method as defined in GB/T17657 carries out；As defined in surface bonding strength is pressed 6.9 in GB/T11718-2009
Measuring method carries out.
As can be seen from the above table, Ultrathin high density fiberboard prepared by the present invention has excellent mechanical property, and each
Item physical and mechanical property indexs reach the requirement of national standard high density fiberboard, can be very good meet the needs of high-end market.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
It transforms or replaces, should be covered by the scope of protection of the present invention without what creative work was expected.
Claims (6)
1. a kind of production method of Ultrathin high density fiberboard, which is characterized in that specifically the production method is as follows:
1) boiling softens after being sliced log material, and nanmeter antimong trioxide/PP composite fibre is added thereto, is placed in defibrator
Middle carry out defibrator process, obtains wood-fibred defibrination, then obtains wood-fibred through spontaneously drying, wood-fibred is put into electric heating constant temperature bellows
In, it is heat-treated 3-5h at 80-140 DEG C, then crushed, refined 50-100 mesh, obtain wood powder fiber；
2) wood powder fiber is placed in glue mixer, and sizing material is sprayed to the surface of wood powder fiber, then add montmorillonite/bis-
Material is made so that glue mixing is uniform in zirconia nanopowder compound particle and maleic anhydride Grafting-coupling Agent, stirring；
3) material mat formation forming slab band with spreading machine, slab band is then subjected to precompressed under the pressure of 5-7MPa,
The slab with a thickness of 3-5mm is obtained, the slab after precompressed is then subjected to hot-pressing processing, control hot pressing temperature is in hot pressing
150-180 DEG C, hot pressing pressure 180-230bar, hot pressing time 5-8min can be obtained Ultrathin high density fiberboard.
2. a kind of production method of Ultrathin high density fiberboard as described in claim 1, which is characterized in that in step 1), institute
Stating and controlling cooking pressure in digestion process is 0.6-0.8MPa, digestion time 4-5min；Nanmeter antimong trioxide/the PP is compound
The additive amount of fiber is the 5-8% of log material weight.
3. a kind of production method of Ultrathin high density fiberboard as described in claim 1, which is characterized in that in step 1), institute
State nanmeter antimong trioxide/PP composite fibre the preparation method is as follows:
1) nanmeter antimong trioxide is added in ball mill, adds KH550 silane coupling agent and deionized water, be in revolving speed
Ball milling 10-15h under 400-600r/min, ratio of grinding media to material 10:1, wherein the additive amount of KH550 silane coupling agent is the oxidation of nanometer three
The 2-5% of two antimony weight, the additive amount of deionized water and the envelope-bulk to weight ratio of nanmeter antimong trioxide are 10-15ml/10g；
2) treated nanmeter antimong trioxide is carried out ball milling with polyacrylic acid to be blended, rotational speed of ball-mill 300-400r/
Then blend is melted by screw rod melt extruded spinning machine, is squeezed out by min, Ball-milling Time 5-8h, ratio of grinding media to material 10:1
Fiber is cooled down after spinning head sprays using ring cold wind, can be prepared by the compound fibre of nanmeter antimong trioxide/PP by spinning
Dimension, wherein the additive amount of nanmeter antimong trioxide is the 3-6% of polyacrylic acid weight, and preheating zone is 190-230 DEG C, and melting zone is
210-250 DEG C, compressional zone is 230-280 DEG C, and metering zone is 220-270 DEG C, and spinning temperature is 200-260 DEG C, ring cold wind temperature
It is 20-40 DEG C, the bore dia of spray head silk is 0.2-0.6mm, draw ratio 6-15.
4. a kind of production method of Ultrathin high density fiberboard as described in claim 1, which is characterized in that in step 2, institute
Stating sizing material is any one in epoxyn, organic silicon resin adhesive or unsaturated polyester (UP) adhesive；The sizing material
Additive amount be wood powder fibre weight 5-10%；The montmorillonite/zirconium dioxide nano-complex particle additive amount is that wood powder is fine
Tie up the 2-3% of weight；The additive amount of the maleic anhydride Grafting-coupling Agent is the 0.5-1% of wood powder fibre weight.
5. a kind of production method of Ultrathin high density fiberboard as described in claim 1, which is characterized in that in step 2, institute
State montmorillonite/zirconium dioxide nano-complex particle the preparation method is as follows:
1) 80-130 parts of cetyl trimethylammonium bromide aqueous solution are taken, 6-8 parts of sodium hydroxides are added, are made mixed after stirring and dissolving
Then Heshui solution takes 5-8 parts of montmorillonite, is added in mixed aqueous solution, the vibrating dispersion 30- under 200-300W ultrasonic wave
Then 50min is added 20-40 part eight and is hydrated zirconium oxychloride, pH is adjusted to 10-11 by the sodium hydroxide solution that 1-5mol/L is added dropwise,
It is then heated to 160-200 DEG C, hydro-thermal reaction 10-15h；
2) to after reaction, be cooled to room temperature, 1-1.5 parts of hydrazine hydrates are then added, are stirred in the case where revolving speed is 100-150r/min
20-40min is mixed, is then heated to 60-90 DEG C, isothermal reaction 12-16h, utilizes dehydrated alcohol and deionized water after reaction
To product centrifuge washing until clear liquid is colourless, then dry in 50-70 DEG C of vacuum drying oven to constant weight, can be prepared by montmorillonite/
Zirconium dioxide nano-complex particle.
6. a kind of production method of Ultrathin high density fiberboard as described in claim 1, which is characterized in that montmorillonite/dioxy
Change the preparation step 1 of zirconium nano-complex particle) in, cetyl trimethyl in the cetyl trimethylammonium bromide aqueous solution
The mass percent of ammonium bromide is 10-15%.
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| CN111136748A (en) * | 2020-01-10 | 2020-05-12 | 台州学院 | Wood fiber manufacturing method |
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