CN106272836A - A kind of process technique accelerating the internal Form aldehyde release of artificial wooden sheet material - Google Patents
A kind of process technique accelerating the internal Form aldehyde release of artificial wooden sheet material Download PDFInfo
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- CN106272836A CN106272836A CN201610629946.3A CN201610629946A CN106272836A CN 106272836 A CN106272836 A CN 106272836A CN 201610629946 A CN201610629946 A CN 201610629946A CN 106272836 A CN106272836 A CN 106272836A
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- sheet material
- electric field
- artificial wooden
- pulsed electric
- intense pulsed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
Abstract
A kind of process technique accelerating the internal Form aldehyde release of artificial wooden sheet material, sends artificial wooden sheet material into high intense pulsed electric field process chamber, makes artificial wooden sheet material process 2～10 minutes in the high intense pulsed electric field that electric field intensity is 10kV/cm～100kV/cm.One aspect of the present invention high intense pulsed electric field increases the activity of the internal free formaldehyde of artificial wooden sheet material, increases the dynamics of free formaldehyde, thus improves the rate of release of free formaldehyde, reduces the internal content of formaldehyde of sheet material；The ionization such as hydrone on the other hand high intense pulsed electric field makes wood-based plate, air, producing a large amount of living radical, free radical promotes the unstable group accelerated decomposition in adhesive and release, thus discharges formaldehyde, reduce the internal content of formaldehyde of sheet material, improve the environmental protection grade of sheet material.
Description
Technical field
The present invention relates to artificial wooden sheet material aftertreatment technology, be specifically related to one and utilize high intense pulsed electric field to accelerate sham wood
The technique of free formaldehyde release in lumber, is mainly used in reducing the content of formaldehyde of artificial wooden sheet material.
Background technology
In the last thirty years, along with improving constantly of China's economic level, the interior decoration of China becomes trend, from large-scale business
Field, to curbside little Dian, from foreign-style house villa to exquisite apartment, is all carrying out various finishing, and from big or middle city to bazaar
The gesture that town and rich rural area are spread.In the middle of interior decoration, with plywood, particieboard, density board, fibre board, core-board, cut
The artificial wooden sheet material that sheet, reinforced composite floorboard etc. are main is widely used, such as indoor modeling, Furniture manufacture,
Floor laying material, building structural materials etc..And in these artificial wooden sheet materials, generally contain formaldehyde, in different temperature
With under humidity, formaldehyde constantly can discharge from these materials, and the time is more than 10 years, seriously pollutes Interior Space
Gas, is detrimental to health.The death toll that exceeds the quata that China is caused by room air pollution every year at present reaches 11.1 ten thousand people, and exceed the quata emergency treatment
Number reaches 4,300,000 person-times, directly or indirectly nearly 100,000,000,000 yuan of economic loss.
For reducing the formaldehyde harm to the people, calendar year 2001, country has put into effect environment mandatory standard GB18580-
2001, standard regulation Chinese people makes wooden boards Form aldehyde release standard class, (dry as absorbing liquid concentration of formaldehyde≤1.5mg/L
Dry method), belong to E1 level sheet material, can be directly used for interior decoration.At present, for improving the environmental protection grade of artificial wooden sheet material, reduce
Burst size of methanal in wood-based plate, typically has three kinds of methods.One is to adjust compositional refinements adhesive, but the cost of formaldehydeless glue is relatively
High, it is impossible to substitute the market position of urea-formaldehyde resin adhesive；Two is to adjust plank stuff production technology, after controlling hot compression parameters, hot pressing
Process, but manufacturing cost can be greatly improved, and need accurately to control, it is difficult to large-scale application；Three is to use post-processing approach,
Vacuum suction method is such as used to accelerate Form aldehyde release, the content of formaldehyde in ammonia suction aldehyde method reduction sheet material, but vacuum suction method
Need vacuum equipment, be not suitable with large-scale industrial application, and the ammonia that ammonia is inhaled in aldehyde method easily causes secondary pollution.Therefore,
Find with low cost and adapt to large-scale industrial application artificial board removing formaldehyde technique, have important social meaning with
Economic worth.
Summary of the invention
For the problem that existing artificial wooden sheet material content of formaldehyde is high, the present invention provides a kind of and accelerates in artificial wooden sheet material
The process technique of portion's Form aldehyde release.This technique is with streamline formal layout, suitable factory large-scale use, and processing cost is cheap,
Free formaldehyde in energy accelerated release in vitro artificial wooden sheet material within a short period of time, and promote that the unstable group in adhesive adds
Speed is decomposed and release, thus reduces content of formaldehyde and the burst size of sheet material, improves environmental protection grade and the surcharge of sheet material, protection
The people's is healthy, has bigger economic worth and good social benefit.
The technical solution used in the present invention is:
A kind of process technique accelerating the internal Form aldehyde release of artificial wooden sheet material, it is characterised in that by artificial wooden sheet material
Send into high intense pulsed electric field process chamber, make artificial wooden sheet material at the high intense pulsed electric field that electric field intensity is 10kV/cm～100kV/cm
Middle process 2～10 minutes.
Further, the present invention uses high-voltage pulse power source to be the electricity producing high intense pulsed electric field in high intense pulsed electric field process chamber
Pole powers, and the output voltage of high-voltage pulse power source is adjustable makes the electric field intensity of high intense pulsed electric field process chamber at 10kV/cm extremely
100kV/cm is adjustable.
Further, in order to improve treatment effect of the present invention, high-voltage pulse power source pulse width is 1～100 microseconds.
Further, high intense pulsed electric field of the present invention is uniform field intensity, and the electrode producing high intense pulsed electric field is stainless
The conductive metal material such as steel, aluminum, copper or ferrum.
Further, present invention additionally comprises following steps: by the artificial wooden sheet material that processed through high intense pulsed electric field from by force
Pulse electric field process chamber is delivered to sheet material holding chamber, and sheet material holding chamber takes out coarse vacuum, in sheet material holding chamber, and artificial wooden sheet material
Being spaced at equal intervals, artificial wooden sheet material spacing 0.01m～0.1m, artificial wooden sheet material places 2 to 10 in sheet material holding chamber
It.
Further, sheet material holding chamber is designed with the aerofluxus that can be discharged in time by the formaldehyde that artificial wooden sheet material discharges
Device, there also is provided pond for absorbing formaldehyde in sheet material holding chamber.Further, sheet material holding chamber of the present invention is airtight
Warehouse, casing etc..
Further, in whole technological process, the transport of artificial wooden sheet material can manually feeding, it is possible to by passing
Send band self-feeding.
The method have technical effect that:
One aspect of the present invention high intense pulsed electric field increases the activity of the internal free formaldehyde of artificial wooden sheet material, increases free formaldehyde
Dynamics, thus improve the rate of release of free formaldehyde, reduce the internal content of formaldehyde of sheet material；On the other hand high power pulse electricity
Field makes the ionization such as the hydrone in wood-based plate, air, produces a large amount of living radical, and free radical promotes the instability in adhesive
Group accelerated decomposition and release, thus discharge formaldehyde, reduce the internal content of formaldehyde of sheet material；Further, by high intense pulsed electric field
Sheet material after process is positioned in sheet material holding chamber, by certain negative pressure, at the formaldehyde gas that the internal and outside formation of sheet material is high
Bulk concentration is poor, promotes the Form aldehyde release within sheet material, makes within a short period of time the internal formaldehyde amount of sheet material be substantially reduced, thus reduces
The burst size of methanal of sheet material, improves the environmental protection grade of sheet material.
Compared with prior art, the process time of the present invention is short, and energy consumption is low, meets the modern concepts of environmental protection；Not shadow
Ringing the production procedure of original artificial board, processing cost is cheap, is suitable for factory's large-scale use；It is processed as high intense pulsed electric field, no
Need to add other chemical reagent, do not produce secondary pollution, have broad application prospects in artificial wooden sheet material industry.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of process technique accelerating the internal Form aldehyde release of artificial wooden sheet material of the present invention, including following process
Step:
(1) high-voltage pulse power source start, according to the thickness of process artificial wooden sheet material, the output of regulation high-voltage pulse power source
Voltage, the electric field intensity making high intense pulsed electric field process chamber is adjustable at 10kV/cm to 100kV/cm；
(2) artificial wooden sheet material enters high intense pulsed electric field process chamber through panel feeding mouth, 10kV/cm's～100kV/cm
Process 2～10 minutes under electric field intensity；
(3) sheet material that step (2) has processed is sent through sheet material discharging opening, be delivered to sheet material holding chamber, place at sheet material
In room, sheet material holding chamber takes out coarse vacuum, and sheet material is spaced at equal intervals, sheet material spacing 0.01m～0.1m, and sheet material is at sheet material holding chamber
Middle placement 2 to 10 days；
(4) designing and arranging device of air in sheet material holding chamber, gets rid of the formaldehyde that sheet material discharges in time, and utilizes pond to absorb first
Aldehyde.
Embodiment 1
Choosing three layers of plywood 2 pieces that certain factory produces, one of do not process, another block carries out high intense pulsed electric field process,
Treatment conditions: process electric field intensity is 30kV/cm, the process time is 3 minutes, utilizes seasoning sheet material measurement immediately after process
Burst size of methanal.
Sheet material burst size of methanal after high intense pulsed electric field processes is 3.72mg/L, and untreated sheet material burst size of methanal is
1.35mg/L.Sheet material burst size of methanal after high intense pulsed electric field processes is 2.75 times of untreated sheet material burst size of methanal.
Embodiment 2
Choosing three layers of plywood 2 pieces that certain factory produces, one of do not process, another block carries out high intense pulsed electric field process,
High intense pulsed electric field treatment conditions: process electric field intensity is 60kV/cm, the process time is 5 minutes, places hermetic container after process
In, utilize air formaldehyde speed to survey the burst size of methanal of sheet material in agent test container, test its relative concentration by colorimetric color range.Warp
The sheet material burst size of methanal that high intense pulsed electric field processes is 0.9, and untreated sheet material burst size of methanal is 0.2, at high intense pulsed electric field
Sheet material burst size of methanal after reason is 4.5 times of untreated sheet material burst size of methanal.
Two boards material is placed in atmosphere 3 days, allow it naturally volatilize, again with identical method test Form aldehyde release
Amount, the sheet material burst size of methanal processed through high intense pulsed electric field is 0.03, and untreated sheet material burst size of methanal is 0.1, through high power pulse
Sheet material burst size of methanal after electric field treatment is the 1/3 of untreated sheet material burst size of methanal, the people after present invention process processes
Make wooden boards burst size of methanal to be substantially reduced.
The explanation of the preferred embodiment of the present invention contained above, this is the technical characteristic in order to describe the present invention in detail, and
Be not intended to be limited in the concrete form described by embodiment summary of the invention, carry out according to present invention purport other
Amendment and modification are also protected by this patent.The purport of present invention is to be defined by the claims, rather than by embodiment
Specifically describe and defined.
Claims (6)
1. the process technique accelerating the internal Form aldehyde release of artificial wooden sheet material, it is characterised in that artificial wooden sheet material is sent
Enter high intense pulsed electric field process chamber, make artificial wooden sheet material in the high intense pulsed electric field that electric field intensity is 10kV/cm～100kV/cm
Process 2～10 minutes.
The process technique of the internal Form aldehyde release of acceleration artificial wooden sheet material the most according to claim 1, it is characterised in that adopt
It is the electrode power supply producing high intense pulsed electric field in high intense pulsed electric field process chamber with high-voltage pulse power source, the output of high-voltage pulse power source
Voltage is adjustable makes the electric field intensity of high intense pulsed electric field process chamber adjustable at 10kV/cm to 100kV/cm.
The process technique of the internal Form aldehyde release of acceleration artificial wooden sheet material the most according to claim 2, it is characterised in that high
Pressure pulse power pulse width is 1～100 microseconds.
4., according to the process technique accelerating the internal Form aldehyde release of artificial wooden sheet material described in claim 1,2 or 3, its feature exists
In, described high intense pulsed electric field is uniform field intensity, and the electrode producing high intense pulsed electric field is rustless steel, aluminum, copper or ferrous metal conduction
Material.
The process technique of the internal Form aldehyde release of acceleration artificial wooden sheet material the most according to claim 4, it is characterised in that also
Comprise the following steps: the artificial wooden sheet material processed through high intense pulsed electric field is delivered to sheet material from high intense pulsed electric field process chamber and puts
Putting room, in sheet material holding chamber, artificial wooden sheet material is spaced at equal intervals, and artificial wooden sheet material spacing 0.01m～0.1m are artificial
Wooden boards is placed 2 to 10 days in sheet material holding chamber.
The process technique of the internal Form aldehyde release of acceleration artificial wooden sheet material the most according to claim 5, it is characterised in that plate
Material holding chamber is designed with the exhaust apparatus that can be discharged in time by the formaldehyde that artificial wooden sheet material discharges, in sheet material holding chamber also
It is disposed with pond for absorbing formaldehyde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629946.3A CN106272836B (en) | 2016-08-02 | 2016-08-02 | The handling process of Form aldehyde release inside a kind of acceleration artificial wooden sheet material |
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| CN201610629946.3A CN106272836B (en) | 2016-08-02 | 2016-08-02 | The handling process of Form aldehyde release inside a kind of acceleration artificial wooden sheet material |
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| CN106272836B CN106272836B (en) | 2017-10-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015954A (en) * | 2018-07-25 | 2018-12-18 | 南京林业大学 | A method of improving bamboo plywood weatherability and mechanical property |
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| CN106272836B (en) | 2017-10-03 |
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Effective date of registration: 20190704 Address after: 410000 Room 207-208, 308, Yufeng Court, 306 North Road, Sifangping Street Station, Kaifu District, Changsha City, Hunan Province (Cluster Registration) Patentee after: Changsha Ruibo Precision Machinery Co., Ltd. Address before: 410000 4th Floor, 25 Yingxia Road, Kaifu District, Changsha City, Hunan Province Patentee before: Changsha source Machinery Technology Co., Ltd. |
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Inventor after: Fan Huixiong Inventor after: Han Yangyang Inventor after: Zhang Le Inventor before: Fan Huixiong Inventor before: Tang Ying Inventor before: Feng Jiahuai Inventor before: Han Yangyang Inventor before: Zhang Le |
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