CN106808543A - A kind of method of formaldehyde in use microwave removal wood-based plate - Google Patents
A kind of method of formaldehyde in use microwave removal wood-based plate Download PDFInfo
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- CN106808543A CN106808543A CN201710012570.6A CN201710012570A CN106808543A CN 106808543 A CN106808543 A CN 106808543A CN 201710012570 A CN201710012570 A CN 201710012570A CN 106808543 A CN106808543 A CN 106808543A
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- Prior art keywords
- microwave
- wood
- based plate
- formaldehyde
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/003—Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
- B27K5/0055—Radio-waves, e.g. microwaves
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
-
- 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses the method for formaldehyde in a kind of use microwave removal wood-based plate, belong to formaldehyde wood-based plate field.Comprise the following steps：（1）Pretreatment of raw material；（2）Binder making；（3）Batch mixing is stirred；（4）Mat formation calendering；（5）Hot-press solidifying；（6）Microwave removes formaldehyde.Microwave adsorption heat-emitting powder is added in a binder, it has inhales ripple heating effect, during microwave treatment wood-based plate, it can be such that wood-based plate internal and external temperature improves simultaneously rapidly, accelerate Form aldehyde release, and avoid wood-based plate from deforming；Relative to water filling, microwave adsorption heat-emitting powder also have energy-conservation, it is efficient the characteristics of, improve production efficiency；Microwave adsorption heat-emitting powder is added during binding agent is prepared, and conventional panels production technology is had little to no effect, suitable for large-scale promotion.
Description
Technical field
The present invention relates to the method for formaldehyde in a kind of use microwave removal wood-based plate, belong to formaldehyde wood-based plate field.
Background technology
Wood-based plate mainly includes glued board, wood shavings（Particle）The three major types product such as plate and fiberboard, at present in artificial board
The various sheet materials of urea-formaldehyde resin adhesive molding bonded and product are commonly used in industry.Urea-formaldehyde resin adhesive is by urea and formaldehyde
It is composited, its cost is relatively low, it is easy to prepare, make simple, easy to use.It is special but this class adhesive is under certain condition
Be not environment temperature it is high in the case of, easy sustained release formaldehyde, the important sources as indoor formaldehyde.Research shows, air
Up to 0.45mg/m3, then breathing problem increases middle concentration of formaldehyde, and 1mg/m3 can just cause tissue damage, the meeting more than 12mg/m3
Expiratory dyspnea is caused, then it is high, cause pulmonary edema, in addition it is dead.Media often had because board product burst size of methanal is super in recent years
Mark and cause natus deformity, or even induce the report of cancer, sheet material formaldehyde is one big also into healthy life staying idle at home
Killer.
There is a growing awareness that the harm of artificial board product formaldehyde, due to working condition and the system of production cost
About, at present using without formaldehyde binder or adjustment Wood-based Panel Production technique, to reduce the method for formaldehyde and unrealistic.Now
The drop aldehyde method used in industry of artificial boards, such as：1st, facing method, although the formaldehyde that can suppress in sheet material overflows, but can cause
New formaldehyde pollution, plate surface is set to there are a large amount of formaldehyde；2nd, chemical method, although but short-term effect substantially chemicals meeting
Cause new pollution；3rd, hot ammonia process, cost is very high, and treatment is time-consuming long to need 10-24 hours, work under bad environment；4th, vacuum/negative
Platen press, processing procedure slow, complex structure, equipment and use cost partially is high, contaminative is big, work under bad environment, and application effect is not
It is highly desirable.
Inventing a kind of formaldehyde reduced equipment of intelligent microwave（The patent No.：ZL200810022174.2）In, by pending people
Make sheet material to be placed in microwave action chamber, the formaldehyde for enabling free state using microwave concentrates release on a large scale, while microwave field energy adds
Fast formaldehyde macromolecular is dismissed, make polymeric form formaldehyde also can quick release, sheet material Formaldehyde emission rate is permanently declined, Form aldehyde release
Decreased duration.
Microwave radiation energy about 10~100J/mol of position, and general chemistry bond energy is 100~600kJ/mol, hydrogen bond
Bond energy is 8~50kJ/mol, therefore is not enough to excite molecule to enter high level, does not result in the fracture of chemical bond.Therefore, microwave
Organic chemical reactionses are applied to be not enough to destroy chemical bond.The invention is that the activation during Degradation Formaldehyde is reacted is reduced using microwave
Can, the activity of reactant is improved to realize the degraded of formaldehyde.Under microwave action, make unstable in the molecular radical containing aldehyde in sheet material
The slow degradation process for carrying out for determining group accelerates（For example：Dimethylene group, methylol groups etc.）, make molecular radical Central Plains
This Form aldehyde release in bound state is out；Microwave action free state formaldehyde molecule in sheet material, quickly accelerates its molecule simultaneously
Motion, make free state formaldehyde molecule largely disengage come, reach reduce wood-based plate in content of formaldehyde purpose.
On the other hand, in wood-based plate Degradation Formaldehyde, rate of release and temperature have very big relation.By improving wood-based plate
Own temperature, can greatly improve the rate of release of formaldehyde in plate.But heating of the microwave to material has selectivity, organic material
Dielectric constant it is low, wood-based plate is when water content is low, it is difficult to be heated rapidly by microwave, it is difficult to play heating using microwave speed
Hurry up, homogeneous heating without thermograde, without hysteresis effect etc. " fuel factor " the characteristics of.The invention is in microwave treatment, it is necessary to micro-
Moisture content is injected in ripple chamber, and regulation wood-based plate inhales water content, and enhancing improves wood-based plate own temperature to the absorbability of microwave to reach
Accelerate purpose of the formaldehyde to the speed of outside release.But artificial moisture in panel is too high, yielding, it is unfavorable for the follow-up of wood-based plate
Install and use.
The content of the invention
The technical problems to be solved by the invention are：The method that formaldehyde in a kind of use microwave removal wood-based plate is provided,
It is solved when removing formaldehyde to wood-based plate using microwave, it is necessary to the water filling in wood-based plate, this can cause wood-based plate to deform, be unfavorable for
The subsequent installation of wood-based plate and the problem for using.
The technical problems to be solved by the invention take following technical scheme to realize：
The method of formaldehyde, comprises the following steps in a kind of use microwave removal wood-based plate：
（1）Pretreatment of raw material：By the raw material particle drying of wood-based plate, its moisture content is set to be down to 3%~4%；
（2）Binder making：Water, Lauxite, ammonium chloride and microwave adsorption heat-emitting powder are uniformly mixed, is configured to bond
Agent；
（3）Batch mixing is stirred：100 parts of wood shavings are taken, 18~20 parts of binding agent in input mixer, is stirred to wood shavings and binding agent and filled
Divide and equably mix；
（4）Mat formation calendering：In material feeding calender after agitated, then in 70~80 DEG C of temperature, precompressed unit pressure is
Under the conditions of 1.8MPa, carry out rolling calendering more than 2 times by calender, obtain the slab of surfacing；
（5）Hot-press solidifying：During slab sent into continuous rolling hot press, in 150 DEG C~155 DEG C of hot pressing temperature, hot pressing unit
Pressure be 13MPa under the conditions of, by heating roller laser heating pressurize 20min, be pressed into the sheet material of required thickness and intensity；
（6）Microwave removes formaldehyde：Sheet material after solidification enters tunnel industrial micro-wave oven, under the conditions of microwave frequency 2.45GHz, place
Reason 2~8 minutes, obtains removing the sheet material of formaldehyde.
Used as preferred embodiment, the microwave adsorption heat-emitting powder uses four-needle-like zinc oxide.
Used as preferred embodiment, the weight proportion of each component is in the binding agent：20~30 parts of water, Lauxite 60~
70 parts, 6~7 parts of ammonium chloride, 3~10 parts of microwave adsorption heat-emitting powder.
The beneficial effects of the invention are as follows：Microwave adsorption heat-emitting powder is added in a binder, and it has inhales ripple heating effect,
During microwave treatment wood-based plate, it can be such that wood-based plate internal and external temperature improves simultaneously rapidly, accelerate Form aldehyde release, and avoid
Wood-based plate deforms；Relative to water filling, microwave adsorption heat-emitting powder also have energy-conservation, it is efficient the characteristics of, improve production efficiency；It is micro-
Ripple absorbs heating powder to be added during binding agent is prepared, and conventional panels production technology is had little to no effect, and is adapted to big
Scope is promoted.
Specific embodiment
In order to be easy to understand to technological means of the invention, creation characteristic, reached purpose and effect, further below
Illustrate the present invention.
The method of formaldehyde, comprises the following steps in a kind of use microwave removal wood-based plate：
（1）Pretreatment of raw material：By the raw material particle drying of wood-based plate, its moisture content is set to be down to 3%~4%；
（2）Binder making：Water, Lauxite, ammonium chloride and microwave adsorption heat-emitting powder are uniformly mixed, is configured to bond
Agent；
（3）Batch mixing is stirred：100 parts of wood shavings are taken, 18~20 parts of binding agent in input mixer, is stirred to wood shavings and binding agent and filled
Divide and equably mix；
（4）Mat formation calendering：In material feeding calender after agitated, then in 70~80 DEG C of temperature, precompressed unit pressure is
Under the conditions of 1.8MPa, carry out rolling calendering more than 2 times by calender, obtain the slab of surfacing；
（5）Hot-press solidifying：During slab sent into continuous rolling hot press, in 150 DEG C~155 DEG C of hot pressing temperature, hot pressing unit
Pressure be 13MPa under the conditions of, by heating roller laser heating pressurize 20min, be pressed into the sheet material of required thickness and intensity；
（6）Microwave removes formaldehyde：Sheet material after solidification enters tunnel industrial micro-wave oven, under the conditions of microwave frequency 2.45GHz, place
Reason 2~8 minutes, obtains removing the sheet material of formaldehyde.
Microwave adsorption heat-emitting powder uses four-needle-like zinc oxide.
The weight proportion of each component is in binding agent：20~30 parts of water, 60~70 parts of Lauxite, ammonium chloride 6~7
Part, 3~10 parts of microwave adsorption heat-emitting powder.
Embodiment 1
The method of formaldehyde, comprises the following steps in a kind of use microwave removal wood-based plate：
（1）Pretreatment of raw material：By the raw material particle drying of wood-based plate, its moisture content is set to be down to 3%；
（2）Binder making：20 parts of water, 60 parts of Lauxite, 6 parts of ammonium chloride, 3 parts of four-needle-like zinc oxide, uniform mixing are matched somebody with somebody
It is set to binding agent；
（3）Batch mixing is stirred：100 parts of wood shavings are taken, 18 parts of binding agent in input mixer, is stirred fully equal to wood shavings and binding agent
Mix evenly；
（4）Mat formation calendering：In material feeding calender after agitated, then in 70 DEG C of temperature, precompressed unit pressure is
Under the conditions of 1.8MPa, carry out rolling calendering 3 times by calender, obtain the slab of surfacing；
（5）Hot-press solidifying：During slab sent into continuous rolling hot press, in 150 DEG C of hot pressing temperature, hot pressing unit pressure is
Under the conditions of 13MPa, by heating roller laser heating pressurization 20min, the sheet material of required thickness and intensity is pressed into；
（6）Microwave removes formaldehyde：Sheet material after solidification enters tunnel industrial micro-wave oven, under the conditions of microwave frequency 2.45GHz, place
Reason 2 minutes, obtains removing the sheet material of formaldehyde.
Embodiment 2
The method of formaldehyde, comprises the following steps in a kind of use microwave removal wood-based plate：
（1）Pretreatment of raw material：By the raw material particle drying of wood-based plate, its moisture content is set to be down to 4%；
（2）Binder making：25 parts of water, 65 parts of Lauxite, 7 parts of ammonium chloride, 5 parts of four-needle-like zinc oxide, uniform mixing are matched somebody with somebody
It is set to binding agent；
（3）Batch mixing is stirred：100 parts of wood shavings are taken, 19 parts of binding agent in input mixer, is stirred fully equal to wood shavings and binding agent
Mix evenly；
（4）Mat formation calendering：In material feeding calender after agitated, then in 75 DEG C of temperature, precompressed unit pressure is
Under the conditions of 1.8MPa, carry out rolling calendering 4 times by calender, obtain the slab of surfacing；
（5）Hot-press solidifying：During slab sent into continuous rolling hot press, in 152 DEG C of hot pressing temperature, hot pressing unit pressure is
Under the conditions of 13MPa, by heating roller laser heating pressurization 20min, the sheet material of required thickness and intensity is pressed into；
（6）Microwave removes formaldehyde：Sheet material after solidification enters tunnel industrial micro-wave oven, under the conditions of microwave frequency 2.45GHz, place
Reason 5 minutes, obtains removing the sheet material of formaldehyde.
Embodiment 3
The method of formaldehyde, comprises the following steps in a kind of use microwave removal wood-based plate：
（1）Pretreatment of raw material：By the raw material particle drying of wood-based plate, its moisture content is set to be down to 4%；
（2）Binder making：By 30 parts of water, 70 parts of Lauxite, 7 parts of ammonium chloride, 10 parts of four-needle-like zinc oxide is uniform to mix,
It is configured to binding agent；
（3）Batch mixing is stirred：100 parts of wood shavings are taken, 20 parts of binding agent in input mixer, is stirred fully equal to wood shavings and binding agent
Mix evenly；
（4）Mat formation calendering：In material feeding calender after agitated, then in 80 DEG C of temperature, precompressed unit pressure is
Under the conditions of 1.8MPa, carry out rolling calendering 5 times by calender, obtain the slab of surfacing；
（5）Hot-press solidifying：During slab sent into continuous rolling hot press, in 155 DEG C of hot pressing temperature, hot pressing unit pressure is
Under the conditions of 13MPa, by heating roller laser heating pressurization 20min, the sheet material of required thickness and intensity is pressed into；
（6）Microwave removes formaldehyde：Sheet material after solidification enters tunnel industrial micro-wave oven, under the conditions of microwave frequency 2.45GHz, place
Reason 8 minutes, obtains removing the sheet material of formaldehyde.
Microwave adsorption heat-emitting powder is added in a binder, and it has inhales ripple heating effect, in microwave treatment wood-based plate mistake
Cheng Zhong, it can be such that wood-based plate internal and external temperature improves simultaneously rapidly, accelerate Form aldehyde release, and avoid wood-based plate from deforming；Relative to
Water filling, microwave adsorption heat-emitting powder also have energy-conservation, it is efficient the characteristics of, improve production efficiency；Microwave adsorption heat-emitting powder exists
Added during preparing binding agent, conventional panels production technology is had little to no effect, it is suitable for large-scale promotion.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, without departing from the spirit and scope of the present invention, this hair
Bright also to have various changes and modifications, these changes and improvements are both fallen within the scope of protection of present invention.Application claims
Protection domain is by appending claims and its equivalent thereof.
Claims (3)
1. a kind of method that use microwave removes formaldehyde in wood-based plate, it is characterised in that comprise the following steps：
（1）Pretreatment of raw material：By the raw material particle drying of wood-based plate, its moisture content is set to be down to 3%~4%；
（2）Binder making：Water, Lauxite, ammonium chloride and microwave adsorption heat-emitting powder are uniformly mixed, is configured to bond
Agent；
（3）Batch mixing is stirred：100 parts of wood shavings are taken, 18~20 parts of binding agent in input mixer, is stirred to wood shavings and binding agent and filled
Divide and equably mix；
（4）Mat formation calendering：In material feeding calender after agitated, then in 70~80 DEG C of temperature, precompressed unit pressure is
Under the conditions of 1.8MPa, carry out rolling calendering more than 2 times by calender, obtain the slab of surfacing；
（5）Hot-press solidifying：During slab sent into continuous rolling hot press, in 150 DEG C~155 DEG C of hot pressing temperature, hot pressing unit
Pressure be 13MPa under the conditions of, by heating roller laser heating pressurize 20min, be pressed into the sheet material of required thickness and intensity；
（6）Microwave removes formaldehyde：Sheet material after solidification enters tunnel industrial micro-wave oven, under the conditions of microwave frequency 2.45GHz, place
Reason 2~8 minutes, obtains removing the sheet material of formaldehyde.
2. a kind of method that use microwave removes formaldehyde in wood-based plate according to claim 1, it is characterised in that：The microwave
Absorb heating powder and use four-needle-like zinc oxide.
3. a kind of method that use microwave removes formaldehyde in wood-based plate according to claim 1, it is characterised in that：The bonding
The weight proportion of each component is in agent：20~30 parts of water, 60~70 parts of Lauxite, 6~7 parts of ammonium chloride, microwave absorption hair
3~10 parts of hot powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012570.6A CN106808543B (en) | 2017-01-09 | 2017-01-09 | A kind of method that formaldehyde in wood-based plate is removed using microwave |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012570.6A CN106808543B (en) | 2017-01-09 | 2017-01-09 | A kind of method that formaldehyde in wood-based plate is removed using microwave |
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| Publication Number | Publication Date |
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| CN106808543A true CN106808543A (en) | 2017-06-09 |
| CN106808543B CN106808543B (en) | 2018-06-29 |
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| CN201710012570.6A Expired - Fee Related CN106808543B (en) | 2017-01-09 | 2017-01-09 | A kind of method that formaldehyde in wood-based plate is removed using microwave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311177A (en) * | 2022-01-06 | 2022-04-12 | 南京林业大学 | Preparation method of low-carbon formaldehyde-free ecological plate |
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| DE19758282A1 (en) * | 1997-12-31 | 1999-07-08 | Binker Materialschutz Gmbh | Rapidly decontaminating building components, e.g. removing harmful preservative from wood |
| AU783446B2 (en) * | 2000-02-04 | 2005-10-27 | Commonwealth Scientific And Industrial Research Organisation | Treatment of natural polymer based materials and the products based thereon |
| CN105001802A (en) * | 2014-08-19 | 2015-10-28 | 南京林业大学 | Compound exothermal agent and mixed adhesive for hot pressing of wood-based panels and hot pressing method of wood-based panels |
| CN105345905A (en) * | 2015-10-22 | 2016-02-24 | 德华兔宝宝装饰新材股份有限公司 | Method for manufacturing small dimension wood recombined aesthetic pattern fancy veneer |
| CN105437341A (en) * | 2015-11-17 | 2016-03-30 | 西北农林科技大学 | Method for reducing formaldehyde emission quantity of artificial board through microwave negative pressure method |
| CN105459240A (en) * | 2015-11-17 | 2016-04-06 | 西北农林科技大学 | Equipment for reducing formaldehyde emission of artificial board by microwave vacuum process |
-
2017
- 2017-01-09 CN CN201710012570.6A patent/CN106808543B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19758282A1 (en) * | 1997-12-31 | 1999-07-08 | Binker Materialschutz Gmbh | Rapidly decontaminating building components, e.g. removing harmful preservative from wood |
| AU783446B2 (en) * | 2000-02-04 | 2005-10-27 | Commonwealth Scientific And Industrial Research Organisation | Treatment of natural polymer based materials and the products based thereon |
| CN105001802A (en) * | 2014-08-19 | 2015-10-28 | 南京林业大学 | Compound exothermal agent and mixed adhesive for hot pressing of wood-based panels and hot pressing method of wood-based panels |
| CN105345905A (en) * | 2015-10-22 | 2016-02-24 | 德华兔宝宝装饰新材股份有限公司 | Method for manufacturing small dimension wood recombined aesthetic pattern fancy veneer |
| CN105437341A (en) * | 2015-11-17 | 2016-03-30 | 西北农林科技大学 | Method for reducing formaldehyde emission quantity of artificial board through microwave negative pressure method |
| CN105459240A (en) * | 2015-11-17 | 2016-04-06 | 西北农林科技大学 | Equipment for reducing formaldehyde emission of artificial board by microwave vacuum process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311177A (en) * | 2022-01-06 | 2022-04-12 | 南京林业大学 | Preparation method of low-carbon formaldehyde-free ecological plate |
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