CN109773927A - A kind of preparation method of high intensity sound-absorbing particieboard - Google Patents
A kind of preparation method of high intensity sound-absorbing particieboard Download PDFInfo
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- CN109773927A CN109773927A CN201910174353.6A CN201910174353A CN109773927A CN 109773927 A CN109773927 A CN 109773927A CN 201910174353 A CN201910174353 A CN 201910174353A CN 109773927 A CN109773927 A CN 109773927A
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Abstract
The invention mainly relates to wood-based plate processing technique fields, disclose a kind of preparation method of high-intensitive sound-absorbing particieboard, comprising: raw material preparation, freezing processing, the processing of fiber grain, sizing processing, raw material mat formation, are hot-forming；The preparation method of high intensity sound-absorbing particieboard provided by the invention, method is simple, and obtained strength of shaving boards is high, and attractability is strong, can effective noise reduction function, meet consumer demand；Wood leftover is prepared into the veneer, wood wool and fiber grain of constant weight ratio, is able to carry out when the later period being made to mat formation and effectively mats formation, improves the intensity and sound-absorbing effect of particieboard；Sodium tripolyphosphate solution is added into veneer, wood wool and fiber grain again sufficiently to be soaked, it is freeze-dried again, freeze-drying increases the porous structure of fiber, the addition of sodium tripolyphosphate is able to suppress water suction and the water retention property of particieboard, the a small amount of moisture for enabling particieboard to absorb quickly scatters and disappears, and improves the intensity and waterproofness of particieboard.
Description
Technical field
The invention mainly relates to wood-based plate processing technique field more particularly to a kind of preparation sides of high-intensitive sound-absorbing particieboard
Method.
Background technique
Particieboard is called particle board, particle board, bagasse board, the particle made of timber or other ligno-cellulosic materials,
Apply the wood-based plate composed under heating power and pressure effect after adhesive, also known as flakeboard, sawdust in traditional particieboard
The length of grain is 5 ~ 10mm, and too long short texture, too short anti-deformation force is poor, and it is not up to standard to will lead to static bending strength；Although at present
The intensity of particieboard can be up to standard, but the density of particieboard or larger, and weight is larger to be not easy to carry, while sound-absorbing effect
It is poor, in TV station, cinema, theatre, music hall, conference centre, gymnasium, tone chamber, market, hotel, Karaoke etc.
Needing the place of sound-absorbing cannot use substantially.
Existing 106514829 A of patent document CN discloses a kind of preparation method of sound-insulating and heat-insulating particieboard, is in density
Vacuum tube is added in the preparation process of plate, is distributed in vacuum tube in particieboard after hot pressing, there is no open true in patent document
The material of blank pipe will increase the weight of particieboard if vacuum tube is metal material, if vacuum tube is that plastic material will
It is possible that leading to vacuum tracheal rupture in hot pressing, and addition vacuum tube can make the internal structure of particieboard in particieboard
Unevenly, bearing capacity can be decreased obviously, and will lead to scope of application diminution.
Summary of the invention
In order to make up the defect of prior art, the object of the present invention is to provide a kind of preparation sides of high-intensitive sound-absorbing particieboard
Method.
A kind of preparation method of high intensity sound-absorbing particieboard, comprising the following steps:
(1) prepared by raw material: Wood leftover is first subjected to slicing, makes veneer with a thickness of 1.1 ~ 1.5mm, it will be again by 1/3 weight
Veneer carry out chopping, make wood wool 3 ~ 5mm of width, Wood leftover taken to be crushed, make the partial size 3 of fiber grain ~
4mm is able to carry out when the later period being made to mat formation and effectively mats formation, and improves the intensity and sound-absorbing effect of particieboard, obtains veneer, wood wool and fibre
Tie up grain；
(2) freezing processing: being uniformly added into sodium tripolyphosphate solution into veneer, wood wool and fiber grain, make water content 46 ~
50%, it stirs evenly, stands 2 ~ 3h of infiltration, then being freeze-dried to water content is 8 ~ 10%, freeze-drying increases the porous knot of fiber
Structure, the addition of sodium tripolyphosphate are able to suppress water suction and the water retention property of particieboard, a small amount of moisture for enabling particieboard to absorb
It quickly scatters and disappears, improves the intensity and waterproofness of particieboard, veneer, freezing wood wool and freezing fiber grain must be freezed；
(3) fiber grain is handled: the mixed powder of freezing fiber grain weight 11 ~ 13% being added into freezing fiber grain, can be improved fiber
The cementitiousness and sound-absorbing effect of intergranular, strength of shaving boards is unqualified caused by avoiding traditional fiber grain length too short, stirs
It mixes uniformly, fiber grain must be handled；
(4) sizing is handled: being glued respectively to freezing veneer, freezing wood wool and processing fiber grain, can be sufficiently reserved original
The porous structure of material enhances sound-absorbing effect, and the use of adhesive can be reduced while guaranteeing strength of shaving boards, reduces wood shavings
The production cost of plate must be glued veneer, sizing wood wool and fiber sizing grain；
(5) raw material is mated formation: 1/2 sizing veneer being laid on lowest level, then successively mat formation 1/2 sizing wood wool, fiber sizing grain, 1/
2 sizing wood wools and 1/2 sizing veneer, must mat formation blank；
(6) hot-forming: to mating formation, blank progress is hot-forming, and first adjusting pressure is 0.6 ~ 0.8MPa, with the speed of 2 ~ 3 DEG C/min
Degree is heated to 130 ~ 150 DEG C, keeps the temperature 20 ~ 30min, adhesive is enable slowly to flow, and has particieboard uniform glued strong
Degree, then adjusting pressure is 1.3 ~ 1.5MPa, continues to be heated to 220 ~ 240 DEG C with the speed of 3 ~ 4 DEG C/min, keeps the temperature 15 ~ 20min,
Enable adhesive and the abundant branch knot of starch, with veneer, wood wool and fiber grain ingredient close adhesion, improves the strong of particieboard
Degree, then cooled down with the speed of 1.3 ~ 1.5 DEG C/min, solidify adhesive sufficiently, enhances the bonding strength of particieboard, cut
It cuts, sanding and polishing, obtains high-intensitive sound-absorbing particieboard.
The fiber grain of the step (1), weight are the 1/2 of veneer sheet weight.
The sodium tripolyphosphate solution of the step (2), mass percentage concentration are 2 ~ 3%.
The mixed powder of the step (3), is to mix active carbon and corn flour, weight ratio is active carbon: corn flour=
4 ~ 5:1, the partial size of active carbon are 2 ~ 3mm.
The sizing of the step (4), the resin added for freezing veneer is 6 ~ 7%, and the resin added for freezing wood wool is 9 ~ 10%, place
The resin added for managing fiber grain is 11 ~ 12%.
The cutting of the step (6) carries out tow sides interval fluting to particieboard, and a slot is opened in front, and reverse side opens one
A slot, is repeated in, and groove depth is the 1/5 of wood shavings plate thickness, and width is 6 ~ 8mm, is divided between adjacent two slot of obverse and reverse
15 ~ 20mm can be improved particieboard and extraneous contact area, increase the sound-absorbing effect of particieboard.
The sanding and polishing of the step (6) first uses 300# sand paper, reuses the sand paper of 500#.
The high-intensitive sound-absorbing particieboard that the preparation method of the high intensity sound-absorbing particieboard obtains.
The application method of the high intensity sound-absorbing particieboard, is used to prepare the decoration of furniture and wall, and when use is direct
It is installed after particieboard is cut out.
The invention has the advantages that the preparation method of high intensity sound-absorbing particieboard provided by the invention, method is simple, obtains
Strength of shaving boards is high, and attractability is strong, can effective noise reduction function, meet consumer demand；Wood leftover is prepared into one
The veneer, wood wool and fiber grain for determining weight ratio, are able to carry out when the later period being made to mat formation and effectively mat formation, improve the intensity of particieboard
And sound-absorbing effect；Sodium tripolyphosphate solution is added into veneer, wood wool and fiber grain again sufficiently to be soaked, then is freezed
Dry, freeze-drying increases the porous structure of fiber, and the addition of sodium tripolyphosphate is able to suppress the water suction and water-retaining property of particieboard
Can, a small amount of moisture for enabling particieboard to absorb quickly scatters and disappears, and improves the intensity and waterproofness of particieboard；Add again into fiber grain
The mixture for entering active carbon and corn flour can be improved the cementitiousness and sound-absorbing effect of fiber intergranular, avoid traditional fiber
Strength of shaving boards is unqualified caused by grain length is too short；It is glued respectively to veneer, wood wool and fiber grain again, and three
The resin added of person is different, can be sufficiently reserved the porous structure of raw material, enhances sound-absorbing effect, while guaranteeing strength of shaving boards
The use that adhesive can be reduced simultaneously, reduces the production cost of particieboard；Veneer, wood wool and fiber grain are distinguished after sizing
It is ranked up, making the two sides of particieboard is once from outside to inside veneer, wood wool and fiber grain, can be improved the intensity of particieboard
And sound-absorbing effect；First low pressure and slow heating, enable adhesive slowly to flow after mating formation, and have particieboard uniform glued
Intensity, then increase pressure, it quickly heats, enables adhesive and the abundant branch knot of starch, with veneer, wood wool and fiber grain ingredient
Close adhesion improves the intensity of particieboard, then slowly cools down, and solidifies adhesive sufficiently, and the gluing for enhancing particieboard is strong
Degree；Hot pressing carries out cutting fluting after becoming second nature again, and the two sides of particieboard is made to be uniformly distributed fluting, can be improved particieboard and the external world
Contact area increases the sound-absorbing effect of particieboard；The particieboard being prepared can be used in the preparation of furniture and the decoration of metope,
It is widely used, using simple.
Specific embodiment
Illustrate the present invention with specific embodiment below.
Embodiment 1
A kind of preparation method of high intensity sound-absorbing particieboard, comprising the following steps:
(1) prepared by raw material: Wood leftover is first subjected to slicing, makes veneer with a thickness of 1.1 ~ 1.5mm, it will be again by 1/3 weight
Veneer carry out chopping, make wood wool 3 ~ 5mm of width, Wood leftover taken to be crushed, make the partial size 3 of fiber grain ~
4mm, weight are the 1/2 of veneer sheet weight, are able to carry out when the later period being made to mat formation and effectively mat formation, improve the intensity and sound-absorbing of particieboard
Effect obtains veneer, wood wool and fiber grain；
(2) it is molten that the sodium tripolyphosphate that mass percentage concentration is 2% freezing processing: is uniformly added into veneer, wood wool and fiber grain
Liquid makes water content 46%, stirs evenly, and stands infiltration 2h, then being freeze-dried to water content is 8 ~ 10%, and freeze-drying increases fine
The porous structure of dimension, the addition of sodium tripolyphosphate are able to suppress water suction and the water retention property of particieboard, make lacking for particieboard absorption
Amount moisture can quickly scatter and disappear, and improve the intensity and waterproofness of particieboard, must freeze veneer, freezing wood wool and freezing fiber
Grain；
(3) fiber grain is handled: the mixed powder of freezing fiber grain weight 11% being added into freezing fiber grain, can be improved fiber grain
Between cementitiousness and sound-absorbing effect, strength of shaving boards is unqualified caused by avoiding traditional fiber grain length too short, stirring
Uniformly, fiber grain must be handled；The mixed powder is to mix active carbon and corn flour, and weight ratio is active carbon: corn
Powder=4:1, the partial size of active carbon are 2 ~ 3mm；
(4) sizing is handled: being glued respectively to freezing veneer, freezing wood wool and processing fiber grain, can be sufficiently reserved original
The porous structure of material enhances sound-absorbing effect, and the use of adhesive can be reduced while guaranteeing strength of shaving boards, reduces wood shavings
The production cost of plate must be glued veneer, sizing wood wool and fiber sizing grain；The sizing freezes the resin added of veneer
It is 6%, the resin added for freezing wood wool is 9%, and the resin added of processing fiber grain is 11%；
(5) raw material is mated formation: 1/2 sizing veneer being laid on lowest level, then successively mat formation 1/2 sizing wood wool, fiber sizing grain, 1/
2 sizing wood wools and 1/2 sizing veneer, must mat formation blank；
(6) hot-forming: to mating formation, blank progress is hot-forming, and first adjusting pressure is 0.6MPa, is heated with the speed of 2 DEG C/min
To 130 DEG C, 20min is kept the temperature, adhesive is enable slowly to flow, makes particieboard that there is uniform bonding strength, then adjust pressure
For 1.3MPa, continues to be heated to 220 DEG C with the speed of 3 DEG C/min, keeps the temperature 15min, enable adhesive and the abundant branch knot of starch,
With veneer, wood wool and fiber grain ingredient close adhesion, the intensity of particieboard is improved, then dropped with the speed of 1.3 DEG C/min
Temperature solidifies adhesive sufficiently, enhances the bonding strength of particieboard, cutting, sanding and polishing, the cutting, to particieboard into
A slot is opened in row tow sides interval fluting, front, and reverse side is opened a slot, is repeated in, and groove depth is wood shavings plate thickness
1/5, width is 6 ~ 8mm, is divided into 15 ~ 20mm between adjacent two slot of obverse and reverse, can be improved particieboard and extraneous contact surface
Product, increases the sound-absorbing effect of particieboard；The sanding and polishing first uses 300# sand paper, reuses the sand paper of 500#；It obtains high-strength
Spend sound-absorbing particieboard.
The high-intensitive sound-absorbing particieboard that the preparation method of the high intensity sound-absorbing particieboard obtains.
The application method of the high intensity sound-absorbing particieboard, is used to prepare the decoration of furniture and wall, and when use is direct
It is installed after particieboard is cut out.
Embodiment 2
A kind of preparation method of high intensity sound-absorbing particieboard, comprising the following steps:
(1) prepared by raw material: Wood leftover is first subjected to slicing, makes veneer with a thickness of 1.1 ~ 1.5mm, it will be again by 1/3 weight
Veneer carry out chopping, make wood wool 3 ~ 5mm of width, Wood leftover taken to be crushed, make the partial size 3 of fiber grain ~
4mm, weight are the 1/2 of veneer sheet weight, are able to carry out when the later period being made to mat formation and effectively mat formation, improve the intensity and sound-absorbing of particieboard
Effect obtains veneer, wood wool and fiber grain；
(2) sodium tripolyphosphate that mass percentage concentration is 2.5% freezing processing: is uniformly added into veneer, wood wool and fiber grain
Solution makes water content 48%, stirs evenly, and stands infiltration 2.5h, then being freeze-dried to water content is 8 ~ 10%, and freeze-drying increases
Add the porous structure of fiber, the addition of sodium tripolyphosphate is able to suppress water suction and the water retention property of particieboard, absorbs particieboard
A small amount of moisture can quickly scatter and disappear, improve the intensity and waterproofness of particieboard, it is fine that veneer, freezing wood wool and freezing must be freezed
Tie up grain；
(3) fiber grain is handled: the mixed powder of freezing fiber grain weight 12% being added into freezing fiber grain, can be improved fiber grain
Between cementitiousness and sound-absorbing effect, strength of shaving boards is unqualified caused by avoiding traditional fiber grain length too short, stirring
Uniformly, fiber grain must be handled；The mixed powder is to mix active carbon and corn flour, and weight ratio is active carbon: corn
Powder=4.5:1, the partial size of active carbon are 2 ~ 3mm；
(4) sizing is handled: being glued respectively to freezing veneer, freezing wood wool and processing fiber grain, can be sufficiently reserved original
The porous structure of material enhances sound-absorbing effect, and the use of adhesive can be reduced while guaranteeing strength of shaving boards, reduces wood shavings
The production cost of plate must be glued veneer, sizing wood wool and fiber sizing grain；The sizing freezes the resin added of veneer
It is 6.5%, the resin added for freezing wood wool is 9.5%, and the resin added of processing fiber grain is 11.5%；
(5) raw material is mated formation: 1/2 sizing veneer being laid on lowest level, then successively mat formation 1/2 sizing wood wool, fiber sizing grain, 1/
2 sizing wood wools and 1/2 sizing veneer, must mat formation blank；
(6) hot-forming: to mating formation, blank progress is hot-forming, and first adjusting pressure is 0.7MPa, is added with the speed of 2.5 DEG C/min
Heat keeps the temperature 25min, adhesive is enable slowly to flow to 140 DEG C, so that particieboard is had uniform bonding strength, then adjust pressure
Power is 1.4MPa, continues to be heated to 230 DEG C with the speed of 3.5 DEG C/min, keeps the temperature 18min, keep adhesive abundant with starch
Branch knot, and veneer, wood wool and fiber grain ingredient close adhesion improve the intensity of particieboard, then with the speed of 1.4 DEG C/min into
Row cooling, solidifies adhesive sufficiently, enhances the bonding strength of particieboard, cuts, sanding and polishing, the cutting, to wood shavings
Plate carries out tow sides interval fluting, and a slot is opened in front, and reverse side is opened a slot, is repeated in, and groove depth is wood shavings plate thickness
The 1/5 of degree, width are 6 ~ 8mm, are divided into 15 ~ 20mm between adjacent two slot of obverse and reverse, can be improved particieboard and connect with extraneous
Contacting surface product, increases the sound-absorbing effect of particieboard；The sanding and polishing first uses 300# sand paper, reuses the sand paper of 500#；?
High-intensitive sound-absorbing particieboard.
The high-intensitive sound-absorbing particieboard that the preparation method of the high intensity sound-absorbing particieboard obtains.
The application method of the high intensity sound-absorbing particieboard, is used to prepare the decoration of furniture and wall, and when use is direct
It is installed after particieboard is cut out.
Embodiment 3
A kind of preparation method of high intensity sound-absorbing particieboard, comprising the following steps:
(1) prepared by raw material: Wood leftover is first subjected to slicing, makes veneer with a thickness of 1.1 ~ 1.5mm, it will be again by 1/3 weight
Veneer carry out chopping, make wood wool 3 ~ 5mm of width, Wood leftover taken to be crushed, make the partial size 3 of fiber grain ~
4mm, weight are the 1/2 of veneer sheet weight, are able to carry out when the later period being made to mat formation and effectively mat formation, improve the intensity and sound-absorbing of particieboard
Effect obtains veneer, wood wool and fiber grain；
(2) it is molten that the sodium tripolyphosphate that mass percentage concentration is 3% freezing processing: is uniformly added into veneer, wood wool and fiber grain
Liquid makes water content 50%, stirs evenly, and stands infiltration 3h, then being freeze-dried to water content is 8 ~ 10%, and freeze-drying increases fine
The porous structure of dimension, the addition of sodium tripolyphosphate are able to suppress water suction and the water retention property of particieboard, make lacking for particieboard absorption
Amount moisture can quickly scatter and disappear, and improve the intensity and waterproofness of particieboard, must freeze veneer, freezing wood wool and freezing fiber
Grain；
(3) fiber grain is handled: the mixed powder of freezing fiber grain weight 13% being added into freezing fiber grain, can be improved fiber grain
Between cementitiousness and sound-absorbing effect, strength of shaving boards is unqualified caused by avoiding traditional fiber grain length too short, stirring
Uniformly, fiber grain must be handled；The mixed powder is to mix active carbon and corn flour, and weight ratio is active carbon: corn
Powder=5:1, the partial size of active carbon are 2 ~ 3mm；
(4) sizing is handled: being glued respectively to freezing veneer, freezing wood wool and processing fiber grain, can be sufficiently reserved original
The porous structure of material enhances sound-absorbing effect, and the use of adhesive can be reduced while guaranteeing strength of shaving boards, reduces wood shavings
The production cost of plate must be glued veneer, sizing wood wool and fiber sizing grain；The sizing freezes the resin added of veneer
It is 7%, the resin added for freezing wood wool is 10%, and the resin added of processing fiber grain is 12%；
(5) raw material is mated formation: 1/2 sizing veneer being laid on lowest level, then successively mat formation 1/2 sizing wood wool, fiber sizing grain, 1/
2 sizing wood wools and 1/2 sizing veneer, must mat formation blank；
(6) hot-forming: to mating formation, blank progress is hot-forming, and first adjusting pressure is 0.8MPa, is heated with the speed of 3 DEG C/min
To 150 DEG C, 30min is kept the temperature, adhesive is enable slowly to flow, makes particieboard that there is uniform bonding strength, then adjust pressure
For 1.5MPa, continues to be heated to 240 DEG C with the speed of 4 DEG C/min, keeps the temperature 20min, enable adhesive and the abundant branch knot of starch,
With veneer, wood wool and fiber grain ingredient close adhesion, the intensity of particieboard is improved, then dropped with the speed of 1.5 DEG C/min
Temperature solidifies adhesive sufficiently, enhances the bonding strength of particieboard, cutting, sanding and polishing, the cutting, to particieboard into
A slot is opened in row tow sides interval fluting, front, and reverse side is opened a slot, is repeated in, and groove depth is wood shavings plate thickness
1/5, width is 6 ~ 8mm, is divided into 15 ~ 20mm between adjacent two slot of obverse and reverse, can be improved particieboard and extraneous contact surface
Product, increases the sound-absorbing effect of particieboard；The sanding and polishing first uses 300# sand paper, reuses the sand paper of 500#；It obtains high-strength
Spend sound-absorbing particieboard.
The high-intensitive sound-absorbing particieboard that the preparation method of the high intensity sound-absorbing particieboard obtains.
The application method of the high intensity sound-absorbing particieboard, is used to prepare the decoration of furniture and wall, and when use is direct
It is installed after particieboard is cut out.
Comparative example 1
Remove the veneer and wood wool in step (1), all fiber grains, remaining method, with embodiment 1.
Comparative example 2
It removes step (2), remaining method, with embodiment 1.
Comparative example 3
It removes step (3), remaining method, with embodiment 1.
Comparative example 4
Resin added all 10% in step (4), remaining method, with embodiment 1.
Comparative example 5
Step mats formation all raw materials in (5) after mixing, remaining method, with embodiment 1.
Comparative example 6
It is 46MPa that pressure is first adjusted in removal step (6), is heated to 130 DEG C with the speed of 2 DEG C/min, keeps the temperature 20min, remaining
Method, with embodiment 1.
Comparative example 7
Existing 106514829 A of patent document CN discloses a kind of preparation method of sound-insulating and heat-insulating particieboard.
The performance parameter of embodiment and comparative example particieboard:
Using willow leftover bits and pieces as raw material, every group of 100kg prepares particieboard according to the method for embodiment and comparative example respectively, preparation
It tests respectively according to by the particieboard after the completion of 2006 pairs of each group preparations of GB/T15104-after the completion, while using implementation
The particieboard of example and comparative example preparation volume is 1m3Closing chest, chest external noise be 90 decibels, record each group chest in
The performance parameter of noise, embodiment and comparative example particieboard is shown in Table 1.
Table 1: the performance parameter of embodiment and comparative example particieboard
From table 1 the result shows that, the high-intensitive sound-absorbing particieboard that the preparation method of the high-intensitive sound-absorbing particieboard of embodiment obtains,
Bonding strength and static bending strength are substantially better than comparative example, and noise is substantially reduced in chest, and soundproof effect is similar to comparative example 7, but
It is manufacturing cost significantly lower than comparative example 7, illustrates the height that the preparation method of high-intensitive sound-absorbing particieboard provided by the invention obtains
Intensity sound-absorbing particieboard has very high practical performance.
Claims (9)
1. a kind of preparation method of high intensity sound-absorbing particieboard, which comprises the following steps:
(1) prepared by raw material: Wood leftover is first subjected to slicing, makes veneer with a thickness of 1.1 ~ 1.5mm, it will be again by 1/3 weight
Veneer carry out chopping, make wood wool 3 ~ 5mm of width, Wood leftover taken to be crushed, make the partial size 3 of fiber grain ~
4mm obtains veneer, wood wool and fiber grain；
(2) freezing processing: being uniformly added into sodium tripolyphosphate solution into veneer, wood wool and fiber grain, make water content 46 ~
50%, it stirs evenly, stands 2 ~ 3h of infiltration, then being freeze-dried to water content is 8 ~ 10%, must freeze veneer, freeze wood wool and cold
Freeze fiber grain；
(3) fiber grain is handled: the mixed powder of freezing fiber grain weight 11 ~ 13% being added into freezing fiber grain, stirs evenly, obtains
Handle fiber grain；
(4) sizing is handled: being glued respectively to freezing veneer, freezing wood wool and processing fiber grain, must be glued veneer, apply
Bakelite silk and fiber sizing grain；
(5) raw material is mated formation: 1/2 sizing veneer being laid on lowest level, then successively mat formation 1/2 sizing wood wool, fiber sizing grain, 1/
2 sizing wood wools and 1/2 sizing veneer, must mat formation blank；
(6) hot-forming: to mating formation, blank progress is hot-forming, and first adjusting pressure is 0.6 ~ 0.8MPa, with the speed of 2 ~ 3 DEG C/min
Degree is heated to 130 ~ 150 DEG C, keeps the temperature 20 ~ 30min, then adjusting pressure is 1.3 ~ 1.5MPa, continues to add with the speed of 3 ~ 4 DEG C/min
Heat keeps the temperature 15 ~ 20min to 220 ~ 240 DEG C, then is cooled down with the speed of 1.3 ~ 1.5 DEG C/min, cuts, and sanding and polishing obtains high
Intensity sound-absorbing particieboard.
2. the preparation method of high-intensitive sound-absorbing particieboard according to claim 1, which is characterized in that the fibre of the step (1)
Grain is tieed up, weight is the 1/2 of veneer sheet weight.
3. the preparation method of high-intensitive sound-absorbing particieboard according to claim 1, which is characterized in that the three of the step (2)
Polyphosphate sodium solution, mass percentage concentration are 2 ~ 3%.
4. the preparation method of high-intensitive sound-absorbing particieboard according to claim 1, which is characterized in that the step (3) is mixed
Powder is closed, is to mix active carbon and corn flour, weight ratio is active carbon: corn flour=4 ~ 5:1, the partial size of active carbon is 2 ~
3mm。
5. the preparation method of high-intensitive sound-absorbing particieboard according to claim 1, which is characterized in that step (4) are applied
Glue, freeze veneer resin added be 6 ~ 7%, freeze wood wool resin added be 9 ~ 10%, processing fiber grain resin added be 11 ~
12%。
6. the preparation method of high-intensitive sound-absorbing particieboard according to claim 1, which is characterized in that step (6) are cut
It cuts, tow sides interval fluting is carried out to particieboard, a slot is opened in front, and reverse side is opened a slot, is repeated in, and groove depth is
The 1/5 of wood shavings plate thickness, width are 6 ~ 8mm, are divided into 15 ~ 20mm between adjacent two slot of obverse and reverse.
7. the preparation method of high-intensitive sound-absorbing particieboard according to claim 1, which is characterized in that step (6) are beaten
Grinding and polishing light first uses 300# sand paper, reuses the sand paper of 500#.
8. the high-intensitive sound-absorbing wood shavings that a kind of preparation method of any one of claim 1 ~ 7 high-intensitive sound-absorbing particieboard obtains
Plate.
9. the application method of high intensity sound-absorbing particieboard described in a kind of claim 8, which is characterized in that be used to prepare furniture and
The decoration of wall, when use directly particieboard is cut out after install.
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| CN107553642A (en) * | 2017-09-19 | 2018-01-09 | 安徽嘉美工艺品有限公司 | A kind of drying means for preventing Manchurian ash wood from ftractureing |
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Application publication date: 20190521 |