CN106272870A - A kind of portable sound box of improvement - Google Patents
A kind of portable sound box of improvement Download PDFInfo
- Publication number
- CN106272870A CN106272870A CN201610712392.3A CN201610712392A CN106272870A CN 106272870 A CN106272870 A CN 106272870A CN 201610712392 A CN201610712392 A CN 201610712392A CN 106272870 A CN106272870 A CN 106272870A
- Authority
- CN
- China
- Prior art keywords
- medium density
- mdf
- stage
- sound box
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
- B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2200/00—Wooden materials to be treated
- B27K2200/15—Pretreated particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention relates to the portable sound box of a kind of improvement, including casing, casing is made up of medium density fiber panel material, and medium density fibre board (MDF) is mainly formed by the wood fiber and adhesive hot pressing, and the sandwich layer of medium density fibre board (MDF) and the density contrast on top layer are 180 230kg/m3.Sound box of the present invention is made by medium density fibre board (MDF) and is formed, the even density of medium density fibre board (MDF), and the casing of the audio amplifier made can effectively reduce resonance and echo, makes tonequality full pure.And, the water proofing property of the medium density fiber that the present invention makes, anti-flammability, dimensional stability and deep shaping property are good, and physical and mechanical property is good, defect rate is low for the sound box surface bonding strength made, internal bond strength etc..
Description
Technical field
The present invention relates to a kind of audio amplifier, particularly relate to the portable sound box of a kind of improvement.
Background technology
Along with continuing to increase of life stress, people often on outdoor square, park and go out outing when
Alleviating pressure by music, therefore, under this market background, portable loudspeaker box the most just arises.And audio amplifier is as whole
The terminal of individual sound system, is the extremely important ingredient of sound system, and its effect is converted into audio frequency electric energy exactly accordingly
Acoustic energy, and it is radiated space.It is responsible for and the signal of telecommunication is transformed into acoustical signal directly listens to so for the ear of people
One mission critical, directly the audition with people is come into contacts with.And the subjective feeling of sound is evaluated a sound system by human ear just
The most important standard of tonequality quality, therefore, the performance height of audio amplifier is to play pivotal role to the tonequality of a sound system.
At present, audio amplifier is divided into the casing of plastic loudspeaker box, metal audio amplifier and wooden acoustic box, i.e. audio amplifier to mould for being respectively adopted mostly
The audio amplifier that material, metal are made with wood materials.And the material of sound box is the key factor affecting the performances such as audio amplifier tonequality, because of
Density of material for sound box is the biggest, and when sending sound, the produced vibration of casing is the least, and such sound just can be more
Reduced really.In these three audio amplifier, metal audio amplifier cost is high, weight is big, not readily portable；And the density of wood materials
More than the density of plastics, so the acoustical quality of wooden acoustic box is outstanding than the acoustical quality of plastic loudspeaker box, use wooden structures
The audio amplifier made, can effectively reduce resonance and echo, makes tonequality full pure.
But, in wood materials, the internal fiber of particieboard is coarse, easily makes moist and ftractures, and not only can not effectively suppress
Resonance, also can seriously reduce the quality of audio amplifier and shorten the service life of audio amplifier.And the cost of manufacture of solid wood is high, and density is inadequate
Equilibrium, the most easily makes moist and ftractures, and therefore, uses the audio amplifier that solid wood is made, although quality is higher, but easily by using ring
The impact in border, it should not use in outdoor environment.
Summary of the invention
It is an object of the invention to for the above-mentioned problems in the prior art, it is proposed that the good improvement of a kind of tonequality is just
Take audio amplifier.
The purpose of the present invention can be realized by following technical proposal: the portable sound box of a kind of improvement, including casing, described
Casing is made up of medium density fiber panel material, and described medium density fibre board (MDF) is mainly formed by the wood fiber and adhesive hot pressing, in close
The sandwich layer of degree fibre board and the density contrast on top layer are 180-230kg/m3。
The sandwich layer of medium density fibre board (MDF) of the present invention and top layer density contrast are 180-230kg/m3, density is more uniform, makes
The casing of audio amplifier can effectively reduce resonance and echo, makes tonequality full pure.And, in the range of density contrast of the present invention in close
The deep shaping property of degree fibre board is good, the physical and mechanical property such as the sound box surface bonding strength made, internal bond strength is good,
Defect rate is low.
In the portable sound box of above-mentioned a kind of improvement, it is 8-that described adhesive accounts for the mass percent of medium density fibre board (MDF)
15%, adhesive is the one in phenolic resin, Lauxite.
In the portable sound box of above-mentioned a kind of improvement, also including mass percent in described medium density fibre board (MDF) is 5-
The nano diatomite of 9%, SiO in kieselguhr2Account for more than 87%.Due to adhesive, medium density fibre board (MDF) of the present invention
Free formaldehyde release is easily polluted environment and affects user health.Therefore, the present invention with the addition of nanometer in medium density fibre board (MDF)
SiO in kieselguhr, and the kieselguhr of present invention interpolation2Content is high, and diatomaceous specific surface area is big, and therefore adsorptivity is strong, thus
The burst size of methanal of medium density fibre board (MDF) can be reduced.It addition, the kieselguhr that the present invention adds is nanoscale, permissible after hot pressing
It is sufficient filling with in the hole of fiber finer cell and sheet material, the moisture penetration hindering capillarity to produce, therefore, it can reduce this
The thickness swelling of invention medium density fibre board (MDF) and moisture absorption, at the same time it can also be improve the bending of medium density fibre board (MDF) of the present invention
Intensity and internal bond strength.
In the portable sound box of above-mentioned a kind of improvement, also including mass percent in described medium density fibre board (MDF) is
The didecyl dihydroxy ethyl ammonium borate of 0.42-0.53%.Didecyl dihydroxy ethyl ammonium borate is added in medium density fibre board (MDF), in
The oxygen index (OI) of density fiber board is the trend of first increases and then decreases, when didecyl dihydroxy ethyl ammonium borate content within the above range
Time, oxygen index (OI) increases at most.And, add the caloic of the medium density fibre board (MDF) of the didecyl dihydroxy ethyl ammonium borate of above-mentioned content
Amount has certain loss, and charring rate improves.Therefore, the present invention adds the didecyl dihydroxy ethyl of above-mentioned mass percent
Ammonium borate can be effectively improved the anti-flammability of medium density fibre board (MDF).
In the portable sound box of above-mentioned a kind of improvement, the described wood fiber processes through acetylation process and ozone.Due to
This easy moisture expantion under high humidity environment of the wood fiber, so the medium density fibre board (MDF) dimensional stability made is the highest, because of
This, can directly influence serviceability and the service life of wooden acoustic box of the present invention, considerably limit wooden acoustic box of the present invention
Use environment.To this, the present invention has carried out acetylation process to the raw material wood fiber and ozone processes.Wherein, acetylation processes
Principle is by the hydroxyl in acetyl group displacement fiber, reduces the quantity of hydrophilic group in fiber, reduces fibrous absorbent rate
Effect.And, acetyl group import the esterification insoluble matter produced and can form inflation effect in microfibril gap, such that it is able to
Play the effect of stable medium density fiber board size.In addition to improving dimensional stability, acetylation processes the wood fiber and can also carry
The biodurable of high medium density fibre board (MDF), after degradation, plate surface is the brightest and the cleanest smooth, and the power of acetylation sheet material
Learn performance and also have slight lifting.It addition, the wood fiber of the present invention also carries out ozone process, to increase acetyl after acetylation processes
The thermoplasticity of chemical fibre dimension and interior contact so that the medium density fibre board (MDF) made is mechanical property while improving dimensional stability
It is obviously improved.
In the portable sound box of above-mentioned a kind of improvement, described hot pressing temperature is 130-150 DEG C.Hot pressing temperature is the present invention
Medium density fibre board (MDF) sandwich layer and the important factor for controlling of top layer density contrast, hot pressing temperature is the highest, medium density fibre board (MDF) core table
Layer density variation is the biggest.Therefore, in order to control the density contrast of medium density fibre board (MDF) of the present invention, the present invention needs hot pressing temperature
Control within the above range.
In the portable sound box of above-mentioned a kind of improvement, described hot pressing include boost phase, packing stage, the fixed thick stage and
Buck stage；Wherein, the maximum pressure of boost phase is 10-13MPa, and pressure rising time is 20-30s；The pressure of packing stage is
4-6MPa, the dwell time is 5-8min；The pressure in fixed thick stage is 10-15MPa, and the fixed thick time is 1-3min.Medium density fiber
The main physico-mechanical performances such as the surface bonding strength of plate, internal bond strength are all controlled by hot pressing, so
Heat pressing process is extremely important for the performance of medium density fibre board (MDF).Hot pressing is divided into four-stage by the present invention, first passes through boosting
The pressure in stage and the control of pressure rising time reduce the surface pre-hardening thickness thickness of medium density fibre board (MDF), make surface bonding strength
Reach requirement.The present invention needs to be strict controlled in above-mentioned scope pressure rising time, unsuitable too fast or the slowest, does not reaches the most slowly and needs
The effect wanted, too fast, the slab uphill process of medium density fibre board (MDF) can be caused to break up destruction slab situation.Secondly, the present invention
Adhesive is made fully to solidify by packing stage, it is ensured that the internal bond strength of medium density fibre board (MDF).Then, the present invention is by determining thickness
Stage is pressed into required thickness medium density fibre board (MDF).Finally, blood pressure lowering obtains medium density fiber slab products.
In the portable sound box of above-mentioned a kind of improvement, described buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed rank
Section, wherein, at the uniform velocity buck stage is, in 20-30s, the pressure in fixed thick stage is down to 3-5MPa, and the reduction of blood pressure in high-speed stage is at 5-
In 8s, pressure is down to normal pressure.Buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed stage by the present invention, in the fixed thick stage
After end, first pass through at the uniform velocity buck stage and pressure is down to 3-5MPa, it is ensured that medium density fibre board (MDF) steam discharge is smooth and easy, reduce
The possibility of medium density fibre board (MDF) bubbling layering.Then by the reduction of blood pressure in high-speed stage, pressure is down to normal pressure, reduces medium density fiber
Board memory layering etc. be difficult to the product defects that detects.
In the portable sound box of above-mentioned a kind of improvement, described medium density fibre board (MDF) processes through antimildew and antibacterial.
Compared with prior art, the method have the advantages that
Sound box the most of the present invention is made by medium density fibre board (MDF) and is formed, the even density of medium density fibre board (MDF), effectively subtracts
Lack resonance and the echo of audio amplifier, made tonequality full pure.
The deep shaping property of the medium density fibre board (MDF) in the range of density contrast the most of the present invention is good, the sound box surface knot made
The physical and mechanical property such as intensity, internal bond strength is good, defect rate is low in conjunction.
In medium density fibre board (MDF) the most of the present invention, the wood fiber is through processing, and also added nano diatomite and didecyl dihydroxy
Ethyl-boron dihydroxide ammonium, the water proofing property of the medium density fiber made, anti-flammability, dimensional stability are preferable, fibre board service life for a long time and
The feature of environmental protection is preferable.
4. the physical and mechanical property through the medium density fibre board (MDF) of heat pressing process hot pressing of the present invention is preferable, and defect is few, matter
Amount height.
Detailed description of the invention
The following is the specific embodiment of the present invention, technical scheme is further described, but the present invention is also
It is not limited to these embodiments.Preparation technology described in following embodiment, if no special instructions, is common process；Described and material
Material, if no special instructions, the most commercially obtains, or can conventional method prepare.
Embodiment 1:
Medium density fibre board (MDF) thick for the 20mm of the present embodiment is smashed through raw material, fiber separates, dry, applying glue stick, heat
Pressure and antimildew and antibacterial process to be made, and then medium density fibre board (MDF) is forged into sound box.
Wherein, in the preparation process of medium density fibre board (MDF), the dried wood fiber is through acetylation process and ozone
Process, then with the nano diatomite (SiO that mass percent is 9%2Account for more than 87%), mass percent be the didecyl of 0.42%
Base dihydroxy ethyl ammonium borate mix homogeneously, carries out applying glue stick, and during applying glue stick, adhesive accounts for medium density fibre board (MDF)
Mass percent be 8%.
It addition, the temperature of hot pressing is 130 DEG C.Hot pressing includes boost phase, packing stage, fixed thick stage and buck stage.
Wherein, the maximum pressure of boost phase is 10MPa, and pressure rising time is 30s.The pressure of packing stage is 4MPa, and the dwell time is
8min.The pressure in fixed thick stage is 10MPa, and the fixed thick time is 3min.Buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed
Stage, at the uniform velocity buck stage are, in 20s, the pressure in fixed thick stage is down to 3MPa, and the reduction of blood pressure in high-speed stage is by pressure in 8s
It is down to normal pressure.
Embodiment 2:
Medium density fibre board (MDF) thick for the 20mm of the present embodiment is smashed through raw material, fiber separates, dry, applying glue stick, heat
Pressure and antimildew and antibacterial process to be made, and then medium density fibre board (MDF) is forged into sound box.
Wherein, in the preparation process of medium density fibre board (MDF), the dried wood fiber is through acetylation process and ozone
Process, then with the nano diatomite (SiO that mass percent is 8%2Account for more than 87%), mass percent be the didecyl of 0.45%
Base dihydroxy ethyl ammonium borate mix homogeneously, carries out applying glue stick, and during applying glue stick, adhesive accounts for medium density fibre board (MDF)
Mass percent be 10%.
It addition, the temperature of hot pressing is 135 DEG C.Hot pressing includes boost phase, packing stage, fixed thick stage and buck stage.
Wherein, the maximum pressure of boost phase is 11MPa, and pressure rising time is 28s.The pressure of packing stage is 5MPa, and the dwell time is
8min.The pressure in fixed thick stage is 12MPa, and the fixed thick time is 3min.Buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed
Stage, at the uniform velocity buck stage are, in 23s, the pressure in fixed thick stage is down to 3MPa, and the reduction of blood pressure in high-speed stage is by pressure in 7s
It is down to normal pressure.
Embodiment 3:
Medium density fibre board (MDF) thick for the 20mm of the present embodiment is smashed through raw material, fiber separates, dry, applying glue stick, heat
Pressure and antimildew and antibacterial process to be made, and then medium density fibre board (MDF) is forged into sound box.
Wherein, in the preparation process of medium density fibre board (MDF), the dried wood fiber is through acetylation process and ozone
Process, then with the nano diatomite (SiO that mass percent is 7%2Account for more than 87%), mass percent be the didecyl of 0.48%
Base dihydroxy ethyl ammonium borate mix homogeneously, carries out applying glue stick, and during applying glue stick, adhesive accounts for medium density fibre board (MDF)
Mass percent be 12%.
It addition, the temperature of hot pressing is 140 DEG C.Hot pressing includes boost phase, packing stage, fixed thick stage and buck stage.
Wherein, the maximum pressure of boost phase is 12MPa, and pressure rising time is 25s.The pressure of packing stage is 5MPa, and the dwell time is
7min.The pressure in fixed thick stage is 13MPa, and the fixed thick time is 2min.Buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed
Stage, at the uniform velocity buck stage are, in 25s, the pressure in fixed thick stage is down to 4MPa, and the reduction of blood pressure in high-speed stage is by pressure in 6s
It is down to normal pressure.
Embodiment 4:
Medium density fibre board (MDF) thick for the 20mm of the present embodiment is smashed through raw material, fiber separates, dry, applying glue stick, heat
Pressure and antimildew and antibacterial process to be made, and then medium density fibre board (MDF) is forged into sound box.
Wherein, in the preparation process of medium density fibre board (MDF), the dried wood fiber is through acetylation process and ozone
Process, then with the nano diatomite (SiO that mass percent is 6%2Account for more than 87%), mass percent be the didecyl of 0.50%
Base dihydroxy ethyl ammonium borate mix homogeneously, carries out applying glue stick, and during applying glue stick, adhesive accounts for medium density fibre board (MDF)
Mass percent be 13%.
It addition, the temperature of hot pressing is 145 DEG C.Hot pressing includes boost phase, packing stage, fixed thick stage and buck stage.
Wherein, the maximum pressure of boost phase is 12MPa, and pressure rising time is 22s.The pressure of packing stage is 6MPa, and the dwell time is
6min.The pressure in fixed thick stage is 14MPa, and the fixed thick time is 2min.Buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed
Stage, at the uniform velocity buck stage are, in 28s, the pressure in fixed thick stage is down to 4MPa, and the reduction of blood pressure in high-speed stage is by pressure in 6s
It is down to normal pressure.
Embodiment 5:
Medium density fibre board (MDF) thick for the 20mm of the present embodiment is smashed through raw material, fiber separates, dry, applying glue stick, heat
Pressure and antimildew and antibacterial process to be made, and then medium density fibre board (MDF) is forged into sound box.
Wherein, in the preparation process of medium density fibre board (MDF), the dried wood fiber is through acetylation process and ozone
Process, then with the nano diatomite (SiO that mass percent is 5%2Account for more than 87%), mass percent be the didecyl of 0.53%
Base dihydroxy ethyl ammonium borate mix homogeneously, carries out applying glue stick, and during applying glue stick, adhesive accounts for medium density fibre board (MDF)
Mass percent be 15%.
It addition, the temperature of hot pressing is 150 DEG C.Hot pressing includes boost phase, packing stage, fixed thick stage and buck stage.
Wherein, the maximum pressure of boost phase is 13MPa, and pressure rising time is 20s.The pressure of packing stage is 6MPa, and the dwell time is
5min.The pressure in fixed thick stage is 15MPa, and the fixed thick time is 1min.Buck stage is divided at the uniform velocity buck stage and reduction of blood pressure in high-speed
Stage, at the uniform velocity buck stage are, in 30s, the pressure in fixed thick stage is down to 5MPa, and the reduction of blood pressure in high-speed stage is by pressure in 5s
It is down to normal pressure.
Sound box embodiment 1-5 made carries out performance test, and test result is as shown in table 1.
Table 1:
As known from Table 1, the physical and mechanical property of the sound box that medium density fibre board (MDF) of the present invention is made is preferable, is provided simultaneously with
Preferably dimensional stability, anti-flammability, the quality of sound box is higher, and service life is long, and environmental protection.
Comparative example 1-5:
Comparative example 1-5 differs only in embodiment 3, does not add nano diatomite, in comparative example 2 in comparative example 1
Add 1% nano diatomite, in comparative example 2 add 3% nano diatomite, in comparative example 4 add nano diatomite
Middle SiO2Accounting for 85%, comparative example 5 adds the nano diatomite of 10%.After testing, the medium density fibre board (MDF) of comparative example 1-4 is made
The burst size of methanal of sound box is above 20mg/100g, and the burst size of methanal of comparative example 5 is 5.5mg/100g, but interior
Portion's bond strength and surface bonding strength are down to 0.71MPa and 1.40MPa respectively.
Comparative example 6-10:
Comparative example 6-10 differs only in embodiment 3, does not add didecyl dihydroxy ethyl boric acid in comparative example 6
Ammonium, with the addition of the didecyl dihydroxy ethyl ammonium borate of 0.1%, with the addition of the didecyl two of 0.3% in comparative example 8 in comparative example 7
Ethoxy ammonium borate, with the addition of the didecyl dihydroxy ethyl ammonium borate of 0.55%, with the addition of in comparative example 10 in comparative example 9
The didecyl dihydroxy ethyl ammonium borate of 0.6%.After testing, the oxygen index (OI) of the sound box of comparative example 6-10 is respectively as follows: 41.1,
45.2,46.8,49.5,48.6.It can be seen that, the oxygen index (OI) of sound box is with the increasing of didecyl dihydroxy ethyl ammonium borate addition
Add the trend in first increases and then decreases.
Comparative example 11-14:
Comparative example 11-14 differs only in embodiment 3, and the hot pressing temperature of comparative example 11 is 100 DEG C, comparative example 12
Hot pressing temperature is 120 DEG C, and the hot pressing temperature of comparative example 13 is 160 DEG C, and the hot pressing temperature of comparative example 14 is 180 DEG C.After testing, right
The sandwich layer of medium density fibre board (MDF) and the density contrast on top layer that ratio 11-14 prepares are respectively 148kg/m3、156kg/m3、242kg/
m3、281kg/m3, the most not in the range of density contrast of the present invention.
Comparative example 15-18:
Comparative example 15 differs only in embodiment 3, and the pressure rising time of the boost phase of comparative example 15 is 10s, slab
Destroyed.The pressure rising time of the boost phase of comparative example 16 is 40s, and the surface bonding strength of medium density fibre board (MDF) is only
1.1MPa.The dwell time of the packing stage of comparative example 17 is 3min, and the internal bond strength of medium density fibre board (MDF) is only
0.43MPa.The buck stage of comparative example 18 is common blood pressure lowering technique, and the phenomenon that bubbling is layered easily occurs in medium density fibre board (MDF), secondary
Product rate reaches more than 30%.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by the technical staff in territory, but also
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
Although the present invention has been made a detailed description and has quoted some specific embodiments as proof, but skilled to this area
For technical staff, as long as it is obvious for can making various changes without departing from the spirit and scope of the present invention or revise.
Claims (9)
1. a portable sound box for improvement, including casing, it is characterised in that described casing is made up of medium density fiber panel material,
Described medium density fibre board (MDF) is mainly formed by the wood fiber and adhesive hot pressing, the sandwich layer of medium density fibre board (MDF) and the density contrast on top layer
For 180-230kg/m3。
The portable sound box of a kind of improvement the most according to claim 1, it is characterised in that described adhesive accounts for medium density fiber
The mass percent of plate is 8-15%.
The portable sound box of a kind of improvement the most according to claim 1, it is characterised in that also wrap in described medium density fibre board (MDF)
Include the nano diatomite that mass percent is 5-9%, SiO in kieselguhr2Account for more than 87%.
4. according to the portable sound box of a kind of improvement described in claim 1 or 3, it is characterised in that in described medium density fibre board (MDF)
Also include the didecyl dihydroxy ethyl ammonium borate that mass percent is 0.42-0.53%.
The portable sound box of a kind of improvement the most according to claim 1, it is characterised in that the described wood fiber is at acetylation
Reason and ozone process.
The portable sound box of a kind of improvement the most according to claim 1, it is characterised in that described hot pressing temperature is 130-150
℃。
The portable sound box of a kind of improvement the most according to claim 1, it is characterised in that described hot pressing include boost phase,
Packing stage, fixed thick stage and buck stage, wherein, the maximum pressure of boost phase is 10-13MPa, and pressure rising time is 20-
30s；The pressure of packing stage is 4-6MPa, and the dwell time is 5-8min；The pressure in fixed thick stage is 10-15MPa, the fixed thick time
For 1-3min.
The portable sound box of a kind of improvement the most according to claim 7, it is characterised in that described buck stage is divided into and at the uniform velocity dropping
Pressure stage and reduction of blood pressure in high-speed stage, wherein, at the uniform velocity buck stage is, in 20-30s, the pressure in fixed thick stage is down to 3-5MPa,
The reduction of blood pressure in high-speed stage is for be down to normal pressure by pressure in 5-8s.
The portable sound box of a kind of improvement the most according to claim 1, it is characterised in that described medium density fibre board (MDF) is through anti-
Mould antimicrobial treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610712392.3A CN106272870A (en) | 2016-08-23 | 2016-08-23 | A kind of portable sound box of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610712392.3A CN106272870A (en) | 2016-08-23 | 2016-08-23 | A kind of portable sound box of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106272870A true CN106272870A (en) | 2017-01-04 |
Family
ID=57615886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610712392.3A Pending CN106272870A (en) | 2016-08-23 | 2016-08-23 | A kind of portable sound box of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106272870A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058630A (en) * | 1991-07-31 | 1992-02-12 | 衢州木材厂 | Reinforced composite fibre form-board and manufacture method thereof |
| CN1490227A (en) * | 2003-08-27 | 2004-04-21 | �Ͼ���ҵ��ѧ | Container baseboard and producing method thereof |
| CN1670104A (en) * | 2005-03-02 | 2005-09-21 | 上海市建筑科学研究院有限公司 | Low-release aldehyde adhesive and its preparation method and use |
| CN101845100A (en) * | 2010-06-17 | 2010-09-29 | 杨占平 | Method for manufacturing cellulose diacetate by using natural bamboo fiber as raw material |
| CN202147440U (en) * | 2011-06-22 | 2012-02-22 | 青岛德才装饰安装工程有限公司 | Composite medium-density fiberboard |
| CN102505553A (en) * | 2011-11-02 | 2012-06-20 | 东营正和木业有限公司 | Process for producing directly mold-pressed fiber board |
| CN102672784A (en) * | 2011-03-15 | 2012-09-19 | 北京创源基业自动化控制技术研究所 | Middle-density fibre board and preparation method thereof |
| CN102873734A (en) * | 2012-09-26 | 2013-01-16 | 安徽丰田竹业制造有限公司 | Heavy-bamboo composite floor board production process |
| CN203305583U (en) * | 2013-05-20 | 2013-11-27 | 嘉兴泉泰音响设备有限公司 | Voice box body plate |
| CN103619917A (en) * | 2011-06-10 | 2014-03-05 | 泰坦木业有限公司 | Wood fibre acetylation |
| CN103842096A (en) * | 2011-06-22 | 2014-06-04 | 英派尔科技开发有限公司 | Non-covalently bonding anti-microbial nanoparticles for water soluble wood treatment |
| US20140227503A1 (en) * | 2011-09-28 | 2014-08-14 | Titan Wood Limited | Panels of medium density fibreboard |
| CN105710955A (en) * | 2014-12-05 | 2016-06-29 | 北京林业大学 | Methylene diphenyl isocyanate (MDI) light high-strength fiber board and manufacturing method |
-
2016
- 2016-08-23 CN CN201610712392.3A patent/CN106272870A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058630A (en) * | 1991-07-31 | 1992-02-12 | 衢州木材厂 | Reinforced composite fibre form-board and manufacture method thereof |
| CN1490227A (en) * | 2003-08-27 | 2004-04-21 | �Ͼ���ҵ��ѧ | Container baseboard and producing method thereof |
| CN1670104A (en) * | 2005-03-02 | 2005-09-21 | 上海市建筑科学研究院有限公司 | Low-release aldehyde adhesive and its preparation method and use |
| CN101845100A (en) * | 2010-06-17 | 2010-09-29 | 杨占平 | Method for manufacturing cellulose diacetate by using natural bamboo fiber as raw material |
| CN102672784A (en) * | 2011-03-15 | 2012-09-19 | 北京创源基业自动化控制技术研究所 | Middle-density fibre board and preparation method thereof |
| CN103619917A (en) * | 2011-06-10 | 2014-03-05 | 泰坦木业有限公司 | Wood fibre acetylation |
| CN202147440U (en) * | 2011-06-22 | 2012-02-22 | 青岛德才装饰安装工程有限公司 | Composite medium-density fiberboard |
| CN103842096A (en) * | 2011-06-22 | 2014-06-04 | 英派尔科技开发有限公司 | Non-covalently bonding anti-microbial nanoparticles for water soluble wood treatment |
| US20140227503A1 (en) * | 2011-09-28 | 2014-08-14 | Titan Wood Limited | Panels of medium density fibreboard |
| CN102505553A (en) * | 2011-11-02 | 2012-06-20 | 东营正和木业有限公司 | Process for producing directly mold-pressed fiber board |
| CN102873734A (en) * | 2012-09-26 | 2013-01-16 | 安徽丰田竹业制造有限公司 | Heavy-bamboo composite floor board production process |
| CN203305583U (en) * | 2013-05-20 | 2013-11-27 | 嘉兴泉泰音响设备有限公司 | Voice box body plate |
| CN105710955A (en) * | 2014-12-05 | 2016-06-29 | 北京林业大学 | Methylene diphenyl isocyanate (MDI) light high-strength fiber board and manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102892825B (en) | Shaped material and manufacture method thereof | |
| CN201519995U (en) | Bamboo charcoal modified adhesive glued wood product | |
| HU223262B1 (en) | Process for producing workpieces and molded pieces out of cellulose and/or cellulose-containing fiber material | |
| CN103937279A (en) | Magnetic wood-plastic composite material and preparation method thereof | |
| CN102876063B (en) | Composite wood-based sound absorbing material, and production method thereof | |
| CN109577104A (en) | A kind of preparation method of environment protection pressed-fibre board and the processing technology of furniture | |
| CN109137599B (en) | Method for reinforcing paper pulp molded product added with PLA | |
| CN106217580A (en) | A kind of improved portable audio amplifier | |
| JP2010147526A (en) | Method of manufacturing diaphragm for electroacoustic transducer and speaker incorporating the diaphragm | |
| JP3291090B2 (en) | Biodegradable boards and moldings | |
| Zhang et al. | Fully biodegradable, hydrophobic, enhanced barrier starch bio-composites with sandwich structure by simulating wood | |
| CN206884297U (en) | A kind of family's cabinet fiberboard | |
| CN106272870A (en) | A kind of portable sound box of improvement | |
| CN204721598U (en) | Oscillating plate, loud speaker and mobile body device | |
| CN103306049A (en) | Preparation method of acupuncturing 3D sound-absorbing body | |
| CN105120410A (en) | Loudspeaker | |
| CN107745563A (en) | Display device shell with electro-magnetic screen function | |
| JP3522706B2 (en) | WOOD BASE MATERIAL AND PROCESS FOR PRODUCING THE SAME | |
| RU2509064C1 (en) | Polymer composite material and method for production thereof | |
| CN105415468B (en) | Preparation method of mould-proof bamboo plywood | |
| CN111909534B (en) | Preparation method of sound-insulation noise-reduction light foaming type wood-plastic board | |
| JP2005200470A (en) | Method for producing molding having woody fiber bonded with resin | |
| JP3552019B2 (en) | Refractory material and its manufacturing method | |
| CN103448185A (en) | Preparation method of damper | |
| JP4143486B2 (en) | Interior decorative board and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
|
| RJ01 | Rejection of invention patent application after publication |