CN109910127A - A kind of moisture-proof wood-based plate and preparation method thereof - Google Patents
A kind of moisture-proof wood-based plate and preparation method thereof Download PDFInfo
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- CN109910127A CN109910127A CN201910208147.2A CN201910208147A CN109910127A CN 109910127 A CN109910127 A CN 109910127A CN 201910208147 A CN201910208147 A CN 201910208147A CN 109910127 A CN109910127 A CN 109910127A
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- 239000002023 wood Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000006185 dispersion Substances 0.000 claims abstract description 94
- 239000001993 wax Substances 0.000 claims abstract description 92
- 239000012188 paraffin wax Substances 0.000 claims abstract description 87
- 239000000853 adhesive Substances 0.000 claims abstract description 35
- 230000001070 adhesive effect Effects 0.000 claims abstract description 35
- 238000007731 hot pressing Methods 0.000 claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 20
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 3
- 239000011094 fiberboard Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 24
- 239000011093 chipboard Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 13
- 238000005056 compaction Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 21
- 239000000463 material Substances 0.000 description 20
- 239000000835 fiber Substances 0.000 description 11
- 238000009835 boiling Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 238000004513 sizing Methods 0.000 description 9
- 238000003860 storage Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- 239000012792 core layer Substances 0.000 description 5
- 238000010494 dissociation reaction Methods 0.000 description 5
- 230000005593 dissociations Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Dry Formation Of Fiberboard And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention provides a kind of moisture-proof wood-based plates and preparation method thereof, are related to plate field.Preparation method provided by the invention will be the following steps are included: will successively be mated formation, precompressed and hot-pressing processing, and obtain wood-based plate after pretreatment timber mixes with adhesive and wax dispersions；The wax dispersions include paraffin, dispersing agent and water；The dispersing agent is lignosulfonates and/or polyvinyl alcohol；The mass ratio of the paraffin, dispersing agent and water is 40~60:1~5:40~60.The present invention substitutes melt paraffin in the prior art during the preparation process, with wax dispersions, effectively increases the waterproof performance and internal bond strength of wood-based plate；And melt paraffin in the prior art is substituted with wax dispersions, greatly reduce the production cost of wood-based plate.
Description
Technical field
The present invention relates to plate fields more particularly to a kind of moisture-proof wood-based plate and preparation method thereof.
Background technique
Wood-based plate is a kind of plate formed using timber as raw material.Since timber is easy water suction, when humidity is excessive, it is easy
Cause wood-based plate mouldy.In view of the drawbacks described above of wood-based plate, people are dedicated to developing moisture-proof wood-based plate.
Under normal conditions, in order to improve the waterproof effect of wood-based plate, people can add anti-during preparing wood-based plate
Water material.Currently, common waterproof material is melt paraffin, but the melt paraffin dosage of moisture-proof wood-based plate is relatively high, to people
The intensity for making plate has certain negative effect；And paraffin category petroleum resources, use process need application system to be always maintained at again
Heated condition causes energy waste.
Summary of the invention
The present invention provides a kind of moisture-proof wood-based plate and preparation method thereof, moisture-proof wood-based plate provided by the invention has preferable
Intensity and waterproof effect, and reduce the production cost of wood-based plate.
To achieve the goals above, the present invention provides a kind of preparation methods of moisture-proof wood-based plate, comprising the following steps:
It will successively be mated formation, precompressed and hot-pressing processing, be obtained after pretreatment timber mixes with adhesive and wax dispersions
To wood-based plate；
The wax dispersions include paraffin, dispersing agent and water；The dispersing agent is lignosulfonates and/or polyethylene
Alcohol；The mass ratio of the paraffin, dispersing agent and water is 40~60:1~5:40~60.
Preferably, the substance mixed with pretreatment timber further includes melt paraffin other than adhesive and wax dispersions.
Preferably, the wood-based plate includes fiberboard, particieboard and oriented wood chipboard.
Preferably, when the wood-based plate is fiberboard, the mass ratioes of the adhesive and wax dispersions is 210~
240:5~6.
Preferably, when the wood-based plate is fiberboard, the mass ratio of the adhesive, wax dispersions and melt paraffin
For 210~240:5~6:3~5.
Preferably, when the wood-based plate is particieboard or oriented wood chipboard, the matter of the adhesive and wax dispersions
Amount ratio independently is 95~110:2~5.
Preferably, when the wood-based plate is particieboard or oriented wood chipboard, the adhesive, wax dispersions and melting
The mass ratio of paraffin stands alone as 95~110:2~5:2~3.
Preferably, the temperature of the precompressed is 20~90 DEG C, and pressure is 0.5~2MPa, in the pre-compaction process, plate
Movement speed is 150~1000mm/s.
Preferably, the temperature of the hot pressing is 180~240 DEG C, and pressure is 1.7~4.5MPa, in the hot pressing, plate
The movement speed of material is 150~1000mm/s.
The present invention also provides the moisture-proof wood-based plates that above-mentioned technical proposal the method is prepared.
The present invention provides a kind of preparation methods of moisture-proof wood-based plate, comprising the following steps: by pretreatment timber and gluing
After agent and wax dispersions mixing, is successively mated formation, precompressed and hot-pressing processing, obtain wood-based plate；The wax dispersions packet
Include paraffin, dispersing agent and water；The dispersing agent is lignosulfonates and/or polyvinyl alcohol；The paraffin, dispersing agent and water
Mass ratio is 40~60:1~5:40~60.The present invention substitutes melt paraffin in the prior art, stone with above-mentioned wax dispersions
The molecule of paraffin is less than normal melt paraffin in wax dispersion, can play a role on a microscopic scale, and blocking moisture enters logical
Road, while dispersing agent can play the role of certain adhesive again, increase timber intensity, weaken melt paraffin and bear to timber intensity
Face is rung.And the present invention replaces melt paraffin with wax dispersions, and the usage amount of melt paraffin is greatly reduced, is effectively reduced
The production cost of wood-based plate.
Specific embodiment
The present invention provides a kind of preparation methods of moisture-proof wood-based plate, comprising the following steps:
It will successively be mated formation, precompressed and hot-pressing processing, be obtained after pretreatment timber mixes with adhesive and wax dispersions
To wood-based plate；
The wax dispersions include paraffin, dispersing agent and water；The dispersing agent is lignosulfonates and/or polyethylene
Alcohol；The mass ratio of the paraffin, dispersing agent and water is 40~60:1~5:40~60.
In the present invention, all raw materials are commercial goods unless otherwise specified.
In the present invention, the wood-based plate preferably includes fiberboard, particieboard and oriented wood chipboard.
When the wood-based plate is preferably fiberboard, the preparation method of the pretreatment timber preferably includes following steps:
Raw material timber is successively carried out to pre-cooked, boiling and defibrator process processing, obtains pretreatment timber.
The present invention does not specially require the raw material timber for preparing fiberboard, using well known to a person skilled in the art raw materials
Timber.In the present invention, the temperature of the pre-cooked is preferably 80~100 DEG C, and further preferably 90 DEG C, the pre- steaming
The time boiled is preferably 13~17min, further preferably 15min.The present invention is handled by pre-cooked, keeps raw material timber first
Step softening.
After the completion of pre-cooked, the present invention carries out boiling processing, the temperature of the boiling processing to the raw material timber after pre-cooked
Preferably 175~195 DEG C of degree, further preferably 180~190 DEG C, the time of the boiling processing is preferably 3~6min, into
One step is preferably 4~5min.The present invention is handled by boiling, softens raw material timber further.
After the completion of boiling, the present invention carries out defibrator process processing to the raw material timber after boiling, obtains pretreatment timber.In this hair
In bright, the pressure of the defibrator process processing is preferably 0.8~0.9MPa, further preferably 0.85MPa.After boiling of the present invention
Timber mill room high pressure, grinding kneading action under carry out fiber dissociation, obtain fiber dissociation pulpous state pretreatment timber.At this
In invention, the moisture content of the pulpous state pretreatment timber after the fiber dissociation is 80~90%.
When the wood-based plate is preferably fiberboard, the preparation method of the fiberboard the following steps are included:
It will successively be mated formation, precompressed and hot-pressing processing, be obtained after pretreatment timber mixes with adhesive and wax dispersions
To fiberboard.
The present invention mixes the pulpous state pretreatment timber that fiber dissociates with adhesive and wax dispersions, obtains mixture.
In the present invention, the mass ratio of the adhesive and wax dispersions is preferably 210~240:5~6, and further preferably 220
~230:5~6, the wax dispersions include paraffin, dispersing agent and water, and the mass ratio of the paraffin, dispersing agent and water is preferred
For 45~55:2~4:45~55, further preferably 50:3:50.In the present invention, every cubic metre of plate is prepared, the stone needed
The amount of wax dispersion is preferably 3~7kg/m3, further preferably 4~6kg/m3, more preferably 4.7~5.6kg/m3。
In the present invention, the substance mixed with pulpous state pretreatment timber is other than adhesive and wax dispersions, preferably also
Including melt paraffin.In the present invention, every cubic metre of plate is prepared, the total amount of the wax dispersions and melt paraffin that need is preferred
For 3~7kg/m3, further preferably 4~6kg/m3, more preferably 4.7~5.6kg/m3.In the present invention, the paraffin point
The mass ratio of dispersion liquid and melt paraffin is preferably 5~6:3~5, further preferably 5~6:3.5~4.5.
The present invention substitutes melt paraffin in the prior art during preparing fiberboard, with wax dispersions, effectively
Improve the waterproof effect and intensity of fiberboard.The present invention preferably adds partial melting stone while adding wax dispersions
Wax is conducive to the waterproof effect for further increasing fiberboard and intensity.
After the completion of mixing, preferably mixture is dried by the present invention.In the present invention, the temperature of the drying is excellent
150~180 DEG C are selected as, the present invention is preferably dried by way of air-drying.After the completion of drying, the moisture content of the mixture
Preferably 8%~10%.
After the completion of drying, the present invention preferably successively mats formation the mixture after drying, precompressed and hot-pressing processing, obtains
Fiberboard.The present invention obtains fiberboard slab, the present invention is not important to the specific embodiment mated formation by processing of mating formation
It asks, using method well-known to those skilled in the art.After obtaining fiberboard slab, the present invention carries out fiberboard slab
Precompressed processing, the temperature of the precompressed is preferably 20~90 DEG C, further preferably 20~80 DEG C, more preferably 25~60 DEG C,
The pressure of the precompressed is preferably 0.5~2MPa, further preferably 1~1.5MPa；In the pre-compaction process, the movement of plate
Speed is preferably 150~1000mm/s, further preferably 180~800mm/s, more preferably 200~700mm/s, most preferably
For 400~600mm/s.The present invention makes to handle energy by precompressed by temperature, the movement speed of pressure and plate of control precompressed
The air between fiberboard slab is enough discharged, so that fiberboard slab and adhesive, wax dispersions is combined closely, and assign fibre
Tie up the certain intensity of plate slab.
After the completion of precompressed, the present invention carries out hot-pressing processing to fiberboard slab, and the temperature of the hot pressing is preferably 180~
220 DEG C, further preferably 190~210 DEG C, pressure is preferably 1.7~4.5MPa, further preferably 2~4MPa, more preferably
For 2.5~3.5MPa；In the pre-compaction process, the movement speed of plate is preferably 150~1000mm/s, further preferably
180~800mm/s, more preferably 200~700mm/s, most preferably 400~600mm/s.The temperature that the present invention passes through control hot pressing
The movement speed of degree, pressure and plate, enables that fiberboard slab is processed into fiberboard by hot-pressing processing, effectively increases
The waterproof performance and intensity for the fiberboard being prepared.The present invention carries out sawing cutting edge preferably after the hot pressing is completed, to fiberboard
Processing, turns over grillage and is cooled down, then stacking storage, quenched, sanding, obtains stock for fibreboard.
When the wood-based plate is preferably particieboard, the pretreatment timber preferably includes surface layer material and core layer material, described
Surface layer material is preferably powder timber, and the core layer material is preferably wood shavings.In the present invention, the powder timber and wood shavings is aqueous
Rate is preferably≤3%.The present invention does not specially require the size source of powder timber and wood shavings, using those skilled in the art institute
Common powder timber and wood shavings.
When the wood-based plate is preferably particieboard, the preparation method of the particieboard the following steps are included:
It will successively be mated formation, precompressed and hot-pressing processing, be obtained after pretreatment timber mixes with adhesive and wax dispersions
To particieboard.
The present invention will pre-process timber and mix with adhesive and wax dispersions, obtain mixed material.In the present invention, institute
The mass ratio for stating adhesive and wax dispersions is preferably 95~110:2~5, further preferably 100~105:3~4, described
Wax dispersions include paraffin, dispersing agent and water, and the mass ratio of the paraffin, dispersing agent and water is preferably 45~55:2~4:45
~55, further preferably 50:3:50.In the present invention, every cubic metre of plate is prepared, the amount of the wax dispersions needed is preferred
For 1~5kg/m3, further preferably 2~4kg/m3, more preferably 3~3.5kg/m3。
In the present invention, the substance mixed with pulpous state pretreatment timber is other than adhesive and wax dispersions, preferably also
Including melt paraffin.In the present invention, every cubic metre of plate is prepared, the total amount of the wax dispersions and melt paraffin that need is preferred
For 1~5kg/m3, further preferably 2~4kg/m3, more preferably 3~3.5kg/m3.In the present invention, the paraffin dispersion
The mass ratio of liquid and melt paraffin is preferably 2~5:2~3, further preferably 3~4:2~3.
The present invention substitutes melt paraffin in the prior art during preparing particieboard, with wax dispersions, effectively
The waterproof effect and intensity of particieboard are improved, and reduces production cost.The present invention is preferably in addition wax dispersions
Partial melting paraffin is added simultaneously, is conducive to the waterproof effect for further increasing particieboard and intensity.
After obtaining mixed material, the present invention successively mats formation the mixed material, precompressed and hot-pressing processing, is dug
Card.In the present invention, described mat formation, the experiment parameter of precompressed and hot pressing it is identical as the experiment parameter that fiberboard is prepared as above,
Details are not described herein.The present invention by mating formation, precompressed and hot-pressing processing, particieboard is prepared.
The present invention carries out sawing cutting edge processing preferably after the hot pressing is completed, to particieboard, turns over grillage and is cooled down, then heap
Pile storage, quenched, sanding, obtain wood shavings board finished product.
When the wood-based plate is preferably oriented wood chipboard, the pretreatment timber preferably includes surface layer material and core layer material；
The surface layer material is preferably powder timber or long-log sheer, and the core layer material is preferably long-log sheer.In the present invention, the powder
The moisture content of shape timber and long-log sheer is preferably≤3%.The present invention is not important to the shape and preparation method of long-log sheer
It asks, is prepared using knife shaft flaker well known in the art.
When the wood-based plate is preferably oriented wood chipboard, the preparation method of the oriented wood chipboard the following steps are included:
It will successively be mated formation, precompressed and hot-pressing processing, be obtained after pretreatment timber mixes with adhesive and wax dispersions
To particieboard.
The present invention will pre-process timber and mix with adhesive and wax dispersions, obtain mixed material.In the present invention, institute
The mass ratio for stating adhesive and wax dispersions is preferably 95~110:2~5, further preferably 100~105:3~4, described
Wax dispersions include paraffin, dispersing agent and water, and the mass ratio of the paraffin, dispersing agent and water is preferably 45~55:2~4:45
~55, further preferably 50:3:50.In the present invention, every cubic metre of plate is prepared, the amount of the wax dispersions needed is preferred
For 1~5kg/m3, further preferably 2~4kg/m3, more preferably 2~3kg/m3。
In the present invention, the substance mixed with pulpous state pretreatment timber is other than adhesive and wax dispersions, preferably also
Including melt paraffin.In the present invention, every cubic metre of plate is prepared, the total amount of the wax dispersions and melt paraffin that need is preferred
For 1~5kg/m3, further preferably 2~4kg/m3, more preferably 2~3kg/m3.In the present invention, the wax dispersions
Mass ratio with melt paraffin is preferably 2~5:2~3, further preferably 3~4:2~3.
The present invention substitutes melt paraffin in the prior art during preparing oriented wood chipboard, with wax dispersions,
The waterproof effect and intensity of particieboard are effectively increased, and reduces production cost.The present invention is preferably in addition paraffin dispersion
Partial melting paraffin is added while liquid, is conducive to the waterproof effect for further increasing oriented wood chipboard and intensity.
After obtaining mixed material, the present invention successively mats formation the mixed material, precompressed and hot-pressing processing, is determined
To particieboard.In the present invention, described mat formation, the experiment parameter of precompressed and hot pressing and the experiment parameter phase that fiberboard is prepared as above
Together, details are not described herein.The present invention by mating formation, precompressed and hot-pressing processing, oriented wood chipboard is prepared.
The present invention carries out sawing cutting edge processing preferably after the hot pressing is completed, to oriented wood chipboard, turns over grillage and is cooled down,
Stacking storage, quenched, sanding again, obtain oriented shaving board finished product.
Below in conjunction with the embodiment in the present invention, the technical solution in the present invention is clearly and completely described.
Embodiment 1
The preparation method of fiberboard:
Wood chip in chip bin enters pre-cooked cylinder through belt or bucket elevator, heat preservation softening 15min at a temperature of 90 DEG C,
Wood chip after pre-cooked enters boiling cylinder through 185 DEG C, and defibrator is entered after 0.85MPa high temperature and pressure sofening treatment 6min, is being ground
Carry out fiber dissociation under room 0.9MPa, grinding kneading action, fiber moisture after dissociation about 80~90%, subsequently into
It is glued workshop section, adhesive and wax dispersions are applied by sizing spray head, wherein the mass ratio of adhesive and wax dispersions is
220:5, wax dispersions are made of paraffin, lignosulfonates and water, wherein the mass ratio of paraffin, lignosulfonates and water
For 50:3:50.Fiber after sizing enters drying duct, after 150~180 DEG C of Wind Volume rapid draing, fiber moisture
Drop to 8~10%, the fiber after drying enters fiber feed bin, requires to mat formation according to the technique of different size, pave
Slab air is discharged by preformer, assign slab some strength, wherein the temperature of precompressed is room temperature, and the pressure of precompressed is
1.5MPa, the movement speed of plate is 800mm/s in pre-compaction process；Add subsequently into hot press by hot press high temperature and pressure
Work is at fiberboard, and wherein the temperature of hot pressing is 220 DEG C, and the pressure of hot pressing is 3.0MPa, the movement speed of plate in hot pressing
For 800mm/s；The processing of jagsaw cutting side, turns over grillage and is cooled down, then stacking storage, quenched, sanding, quality inspection packaging, storage.
Embodiment 2
It is tested according to the method for embodiment 1, difference is, while adding wax dispersions, also adds tekite
Wax.
Embodiment 3
The preparation method of particieboard:
It is dry by roller for the powder timber of surface layer material and for the flake of sandwich layer, moisture content 3% with
It is interior, subsequently into sizing workshop section, adhesive and wax dispersions are added, wherein the mass ratio of adhesive and wax dispersions is
100:3, wax dispersions are made of paraffin, lignosulfonates and water, wherein the mass ratio of paraffin, lignosulfonates and water
For 55:4:60.Wood shavings and powdery timber after sizing enter feed bin and carry out being classified again by belt conveyer mats formation, and paves
Slab air is discharged by preformer, assign slab some strength, wherein the temperature of precompressed is room temperature, and the pressure of precompressed is
1.5MPa, the movement speed of plate is 400mm/s in pre-compaction process；Add subsequently into hot press by hot press high temperature and pressure
Work is at particieboard, and wherein the temperature of hot pressing is 220 DEG C, and the pressure of hot pressing is 3.0MPa, the movement speed of plate in hot pressing
For 400mm/s；The processing of jagsaw cutting side, turns over grillage and is cooled down, then stacking storage, quenched, sanding, quality inspection packaging, storage.
Embodiment 4
It is tested according to the method for embodiment 3, difference is, while adding wax dispersions, also adds tekite
Wax.
Embodiment 5
The preparation method of oriented wood chipboard:
It is dry by roller for the powder timber of surface layer material and for the long-log sheer of core layer material, moisture content 3% with
It is interior, subsequently into sizing workshop section, adhesive and wax dispersions are added, wherein the mass ratio of adhesive and wax dispersions is
105:4, wax dispersions are made of paraffin, polyethylene alcohol and water, wherein paraffin, polyethylene alcohol and water mass ratio be 45:2:
50.Powdery timber and long-log sheer after sizing enter feed bin and carry out being classified again by belt conveyer mats formation, and paves
Air is discharged by preformer in slab, assigns slab some strength, and wherein the temperature of precompressed is room temperature, and the pressure of precompressed is
1.5MPa, the movement speed of plate is 400mm/s in pre-compaction process；Add subsequently into hot press by hot press high temperature and pressure
Work is at oriented wood chipboard, and wherein the temperature of hot pressing is 220 DEG C, and the pressure of hot pressing is 3.0MPa, the movement of plate in hot pressing
Speed is 400mm/s；Jagsaw cutting side processing, turn over grillage and cooled down, then stacking storage, quenched, sanding, quality inspection pack,
Storage.
Embodiment 6
It is tested according to the method for embodiment 5, difference is, while adding wax dispersions, also adds tekite
Wax.
Comparative example 1
It is tested according to the method for embodiment 1, difference is, in sizing workshop section, apply adhesive and melt paraffin,
Do not apply wax dispersions.
Comparative example 2
It is tested according to the method for embodiment 3, difference is, in sizing workshop section, apply adhesive and melt paraffin,
Do not apply wax dispersions.
Comparative example 3
It is tested according to the method for embodiment 5, difference is, in sizing workshop section, apply adhesive and melt paraffin,
Do not apply wax dispersions.
Performance test
The waterproof performance and internal bond strength performance for the wood-based plate that Examples 1 to 6 and comparative example 1~3 are prepared into
Row test, the test method of waterproofness are as follows: GB/T17657-2013；The test method of internal bond strength are as follows: GB/T17657-
2013.Test is parallel every time carries out 5 times, is averaged.
The waterproof performance and strength character for the wood-based plate that Examples 1 to 2 and comparative example 1 are prepared are tested, and are surveyed
Test result is as shown in table 1:
The waterproofness and strength character for the wood-based plate that 1 Examples 1 to 2 of table and comparative example 1 obtain
In table 1 when plate specification is 18mmP2, every cube of comparative example 1 dosage than melt paraffin in plate is 8kg/
m3, every cube of embodiment 1 dosage than wax dispersions in plate is 5.6kg/m3, every cube of embodiment 2 than paraffin in plate point
Dispersion liquid and the total amount of melt paraffin are 5.6kg/m3, the mass ratio of wax dispersions and melt paraffin is 5:3 in embodiment 2；
When plate specification is 12mmP2, every cube of comparative example 1 dosage than melt paraffin in plate is 7kg/m3, implement
Every cube of example 1 dosage than wax dispersions in plate is 4.7kg/m3, every cube of embodiment 2 than wax dispersions in plate and
The total amount of melt paraffin is 4.7kg/m3, the mass ratio of wax dispersions and melt paraffin is 5:4 in embodiment 2；
When plate specification is 6.7mmE1, every cube of comparative example 1 dosage than melt paraffin in plate is 10kg/m3, real
Applying every cube of example 1 dosage than wax dispersions in plate is 6kg/m3, every cube of embodiment 2 than wax dispersions in plate and
The total amount of melt paraffin is 6kg/m3, the mass ratio of wax dispersions and melt paraffin is 6:5 in embodiment 2.
By 1 test result of table it is found that the fiberboard waterproof performance that is prepared of the present invention is preferable, and by embodiment and right
Ratio comparison is superior to comparative example all using melting it is found that fiberboard waterproofness provided by the invention and internal bond strength are preferable
Melt the waterproofness and internal bond strength of paraffin.Moreover, the wax dispersions negligible amounts that the present invention uses, are greatly saved production
Cost.
The waterproof performance and strength character for the wood-based plate that embodiment 3~4 and comparative example 2 are prepared are tested, and are surveyed
Test result is as shown in table 2:
The waterproofness and strength character for the wood-based plate that 2 embodiment 3~4 of table and comparative example 2 obtain
In table 2 when plate specification is 18mmP2, every cube of comparative example 2 dosage than melt paraffin in plate is 5kg/
m3, every cube of embodiment 3 dosage than wax dispersions in plate is 3.5kg/m3, every cube of embodiment 4 than paraffin in plate point
Dispersion liquid and the total amount of melt paraffin are 3.4kg/m3, the mass ratio of wax dispersions and melt paraffin is 2:3 in embodiment 4；
When plate specification is 4.5mmE1, every cube of comparative example 2 dosage than melt paraffin in plate is 4.0kg/m3,
Every cube of embodiment 3 dosage than wax dispersions in plate is 3.0kg/m3, every cube of embodiment 4 is dispersed than paraffin in plate
The total amount of liquid and melt paraffin is 3.0kg/m3, the mass ratio of wax dispersions and melt paraffin is 5:3 in embodiment 4；
By 2 test result of table it is found that the particieboard waterproof performance that is prepared of the present invention is preferable, and by embodiment and right
Ratio comparison is superior to comparative example all using melting it is found that particieboard waterproofness provided by the invention and internal bond strength are preferable
Melt the waterproofness and internal bond strength of paraffin.Moreover, the wax dispersions negligible amounts that the present invention uses, are greatly saved production
Cost.
The waterproof performance and strength character for the wood-based plate that embodiment 5~6 and comparative example 3 are prepared are tested, and are surveyed
Test result is as shown in table 3:
The waterproofness and strength character for the wood-based plate that 3 embodiment 5~6 of table and comparative example 3 obtain
In table 3 when plate specification is 17mmE0, every cube of comparative example 3 dosage than melt paraffin in plate is 3.5kg/
m3, every cube of embodiment 5 dosage than wax dispersions in plate is 2.5kg/m3, every cube of embodiment 6 than paraffin in plate point
Dispersion liquid and the total amount of melt paraffin are 2.5kg/m3, the mass ratio of wax dispersions and melt paraffin is 3:2 in embodiment 6；
When plate specification is 12mmE0, every cube of comparative example 3 dosage than melt paraffin in plate is 3.0kg/m3, real
Applying every cube of example 5 dosage than wax dispersions in plate is 2.0kg/m3, every cube of embodiment 6 than wax dispersions in plate
Total amount with melt paraffin is 2.0kg/m3, the mass ratio of wax dispersions and melt paraffin is 4:2 in embodiment 6；
By 3 test result of table it is found that the oriented wood chipboard waterproof performance that is prepared of the present invention is preferable, and by embodiment
With comparative example comparison it is found that oriented wood chipboard waterproofness provided by the invention and internal bond strength are preferable, it is complete to be superior to comparative example
Portion uses the waterproofness and internal bond strength of melt paraffin.Moreover, the wax dispersions negligible amounts that the present invention uses, are saved significantly
About production cost.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of moisture-proof wood-based plate, comprising the following steps:
It will successively be mated formation, precompressed and hot-pressing processing, and obtain people after pretreatment timber mixes with adhesive and wax dispersions
Make plate；
The wax dispersions include paraffin, dispersing agent and water；The dispersing agent is lignosulfonates and/or polyvinyl alcohol；
The mass ratio of the paraffin, dispersing agent and water is 40~60:1~5:40~60.
2. preparation method according to claim 1, which is characterized in that the substance mixed with pretreatment timber is in addition to adhesive
It further include melt paraffin outside wax dispersions.
3. preparation method according to claim 1 or 2, which is characterized in that the wood-based plate include fiberboard, particieboard and
Oriented wood chipboard.
4. preparation method according to claim 1 or 3, which is characterized in that when the wood-based plate is fiberboard, the glue
The mass ratio of glutinous agent and wax dispersions is 210~240:5~6.
5. preparation method according to claim 2 or 3, which is characterized in that when the wood-based plate is fiberboard, the glue
The mass ratio of glutinous agent, wax dispersions and melt paraffin is 210~240:5~6:3~5.
6. preparation method according to claim 1 or 3, which is characterized in that when the wood-based plate is particieboard or orientation plane
When card, the mass ratio of the adhesive and wax dispersions independently is 95~110:2~5.
7. preparation method according to claim 2 or 3, which is characterized in that when the wood-based plate is particieboard or orientation plane
When card, the mass ratio of the adhesive, wax dispersions and melt paraffin stands alone as 95~110:2~5:2~3.
8. preparation method according to claim 1, which is characterized in that the temperature of the precompressed is 20~90 DEG C, and pressure is
0.5~2MPa, in the pre-compaction process, the movement speed of plate is 150~1000mm/s.
9. preparation method according to claim 1, which is characterized in that the temperature of the hot pressing is 180~240 DEG C, pressure
For 1.7~4.5MPa, in the hot pressing, the movement speed of plate is 150~1000mm/s.
10. the moisture-proof wood-based plate that any one of claim 1~9 the method is prepared.
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| CN110815485A (en) * | 2019-10-09 | 2020-02-21 | 寿光市鲁丽木业股份有限公司 | Waterproof antibacterial oriented strand board and preparation method thereof |
| CN111070369A (en) * | 2019-12-30 | 2020-04-28 | 大亚人造板集团有限公司 | Preparation method of suspension paraffin and application of suspension paraffin in production of medium-high density fiberboard |
| BE1028850B1 (en) * | 2021-09-09 | 2022-06-28 | Zhaoqing Powerunity Tech Development Co Ltd | Water repellent and method for its production as well as device for the production of a water repellent |
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