CN110480788A - A kind of production technology of no aldehyde flame retardant fibre board - Google Patents
A kind of production technology of no aldehyde flame retardant fibre board Download PDFInfo
- Publication number
- CN110480788A CN110480788A CN201910789695.9A CN201910789695A CN110480788A CN 110480788 A CN110480788 A CN 110480788A CN 201910789695 A CN201910789695 A CN 201910789695A CN 110480788 A CN110480788 A CN 110480788A
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- CN
- China
- Prior art keywords
- aldehyde
- flame retardant
- fibre board
- production technology
- retardant fibre
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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
- 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
- B27N1/0209—Methods, e.g. characterised by the composition of the 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
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention belongs to beaver board technical fields, are related to the manufacture more particularly to a kind of production technology of no aldehyde flame retardant fibre board of fiberboard, and the present invention uses existing medium/high density production line, after fiber is made in wood material, add 30~35kg/m3Aldehyde-free cement and appropriate fireproof powder, then through dried, classified, mat formation, pre-molding, hot pressing, turnover panel cooling, sanding, examine point etc. and storage pack.It is 760~780kg/m that density, which is prepared, using technique of the present invention3Without aldehyde flame retardant fibre board, with ultra-low formaldehyde burst size, take into account fire-retardant characteristic, environmental protection is practical, fashion is beautiful, has the characteristics that flame retardant effect is excellent, intensity is high, decorative surface is good, zero Form aldehyde release, recyclable recycling, meets the trend of continuity of environment sexual development and low-carbon environment-friendly.National examination criteria is fully achieved in the physical and mechanical property without aldehyde flame retardant fibre board that the present invention produces, in production strong operability, fully meets existing technique requirement, formaldehydeless, fire-retardant, nuisanceless.
Description
Technical field
The invention belongs to beaver board technical field, be related to fiberboard manufacture more particularly to a kind of fire-retardant fibre of no aldehyde
Tie up the production technology of plate.
Background technique
Current flame retardant fibre boards most on the market are in process of production usually using urea-formaldehyde glue (UF) or melamine
The hot pressing of modified (MUF) Lai Jinhang substrate produces, and has many advantages, such as at low cost, and process flow is mature, but its shortcoming is that three
A aspect: a), if formaldehyde is excessive, intensity and water resistance be can satisfy, but that there are free formaldehydes is not up to standard；If b) formaldehyde is only
Amount, then be difficult to reach necessary intensity and water resistance；C) do not have humidity resistance generally.Some manufacturers use modified starch
Glue, but intensity and water resistance are inadequate, and some will use NCO and make curing agent to improve, and Ye You factory uses VAE+NCO, but cost
It is excessively high, and NCO is not suitable for heat pressing process.
Throughout the year in the region that has a humid climate, traditional timber floor easily occur wet rising arch, dry shrinkage and cracking, dampness go mouldy and
The puzzlement of infested raw termite brings inconvenience to home life and arranges difficulty.Using addition isocyanates (MDI) without aldehyde glue
Stick produce without aldehyde flame retardant fibre board, national examination criteria is fully achieved in physical and mechanical property；In production process
Appropriate fireproof powder is added in separation system, achievees the effect that fire-retardant.Strong operability in production fully meets existing technique and wants
It asks；No free formaldehyde harm.Technology maturation, performance are stable, are widely used, especially brilliant waterproof and dampproof performance and anti-flammability
Can, it is deep to be favored by marine climate island and sea front domestic consumer and finishing work client.Both it is environmentally friendly it is practical, fashion is beautiful
It sees, and has the characteristics that flame retardant effect is excellent, intensity is high, decorative surface is good, zero Form aldehyde release, recyclable recycling, meet
The main trend of continuity of environment sexual development and low-carbon environment-friendly.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of processing of application wood material to make
Make the production technology of no aldehyde flame retardant fibre board.
The invention is realized by the following technical scheme.
A kind of production technology of no aldehyde flame retardant fibre board, comprises the technical steps that:
A, the preparation of fiber: cutting wood material using drum chipper, and being prepared into length is 15~30mm, width
For 15~25mm, with a thickness of the wood chip of 3~5mm, then boiling, defibrator process；
B, sizing and drying: spurt pipe end of the wood fibre in drying duct first applies aldehyde-free cement, after sizing
Dry 5.0~10.0s, and moisture content of the raw material is controlled 8.0~11.0%；
C, apply fireproof powder: in separation system recycle stock fans entrance, determining that addition is fire-retardant by adjusting spiral frequency
The amount of powder；
D, mat formation and precompressed: fiber with the pressure of 115~165bar carries out slab precompressed after mating formation by machinery, and to plate
Base carries out edging；
E, plate hot pressing: continuous flat press first, second, third and fourth is set, the hot pressing temperature in 5th area is respectively 220~235
DEG C, 220~235 DEG C, 213~228 DEG C, 185~200 DEG C, 170~185 DEG C, set the hot pressing pressure in corresponding the first to five area as
250~375N/cm2, 60~290N/cm2, 40~80N/cm2, 90~200N/cm2, 20~160N/cm2, to the slab after precompressed
It is that 8.8~9.2s/mm carries out hot pressing in thermal ventilation；
F, plate post-processes: the plate for completing hot pressing is placed in constant temperature under the conditions of 25~30 DEG C of temperature, humidity 50~60%
40~56h of constant humidity, then sanding by inspection, sawing, are packaged to obtain the final product.
In the more excellent disclosed example of the present invention, boiling described in step A is that wood chip is placed in 70~85 after washing with heat mill process
DEG C pre-cooked is carried out, then carry out through cooker 2.5 under conditions of 8.0~9.0bar of steam pressure, 160~165 DEG C of temperature~
The boiling of 3.5min carries out defibrator process after softening to chip steaming again.
In the more excellent disclosed example of the present invention, the amount for applying aldehyde-free cement described in step B is 30~35kg/m3, the nothing
Aldehyde adhesive is isocyanates (MDI).
In the more excellent disclosed example of the present invention, when the addition of fireproof powder described in step C, C grades of flame-retardant boards addition fireproof powders are 38
~43kg/m3, oxygen index (OI) is not less than 34%；B grades of flame-retardant board addition fireproof powders are 88~93kg/m3, oxygen index (OI) is not less than 48%.
In the more excellent disclosed example of the present invention, fireproof powder described in step C produces density board by Henan Forestever Wood Tech Co., Ltd.
Fireproof powder.
In the more excellent disclosed example of the present invention, steel strip surface is sprayed without aldehyde plate release agent in the use of press entrance described in step E.
In the more excellent disclosed example of the present invention, in step F by the plate for completing hot pressing be placed in 25~30 DEG C of temperature, humidity 50~
Constant temperature and humidity 48h under the conditions of 60%.
The density that is made is 760~780kg/m3Semifinished sheet.
Beneficial effect
The present invention uses existing medium/high density production line, and it is 760~780 kilograms every cubic metre that density, which is prepared,
Without aldehyde flame retardant fibre board.This without aldehyde flame retardant fibre board have ultra-low formaldehyde burst size, take into account fire-retardant characteristic, both it is environmentally friendly it is practical,
Fashion is beautiful, and has the spies such as flame retardant effect is excellent, intensity is high, decorative surface is good, zero Form aldehyde release, recyclable recycling
Point meets the main trend of continuity of environment sexual development and low-carbon environment-friendly.The physics without aldehyde flame retardant fibre board that the present invention produces
National examination criteria is fully achieved in mechanical property, in production strong operability, fully meets existing technique requirement, no first
It is aldehyde, fire-retardant, nuisanceless.
Specific embodiment
The following describes the present invention in detail with reference to examples, so that those skilled in the art more fully understand this hair
It is bright, but the invention is not limited to following embodiments.
Unless otherwise defined, term (including scientific and technical terminology) used herein above should be construed as having as belonging to the present invention
The identical meaning that those skilled in the art are commonly understood by.It will also be understood that term used herein above should be explained
To have the meaning consistent with their meanings in the content of this specification and the relevant technologies, and should not be with idealization
Or excessive form is explained, unless expressly so limiting here.
Following embodiment is implemented on the production line of existing medium/high density board.
Embodiment 1
9mm is as follows without C grades of fire resistance fibre board production technologies of aldehyde and process control:
Using MDI glue production 9SCQ0-B1 without C grades of flame retardant fibre boards of aldehyde, plain plate thickness controls 9.4mm, density domination 760
~780kg/m3, MDI glue consumption control 33kg/m3Left and right, 38~43kg/m of fireproof powder consumption control3。
Production technology is as follows:
Hot pressing pressure see the table below: 0,1,32~34,35~37,38~41,42~44 be position control, remaining frame is pressure
Power control.
Sampling inspection results are as follows:
Index request is as follows:
Embodiment 2
9mm is as follows without B grades of fire resistance fibre board production technologies of aldehyde and process control:
Using MDI glue production 9SBQ0-B1 without B grades of flame retardant fibre boards of aldehyde, plain plate thickness controls 9.4mm, density domination 760
~780kg/m3, MDI glue consumption control 33kg/m3Left and right, 88~93kg/m of fireproof powder consumption control3。
Production technology is as follows:
Hot pressing pressure see the table below: 0,1,32-34,35-37,38-41,42-44 be position control, remaining frame is pressure control
System.
Sampling inspection results are as follows:
Index request is as follows:
These parameters illustrate that above-mentioned no aldehyde flame retardant fibre board index reaches standard.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (7)
1. a kind of production technology of no aldehyde flame retardant fibre board, which is characterized in that comprise the technical steps that:
The preparation of A fiber: cutting wood material using drum chipper, be prepared into length be 15~30mm, width 15
~25mm, the wood chip with a thickness of 3~5mm, then boiling, defibrator process；
B sizing and drying: spurt pipe end of the wood fibre in drying duct first applies aldehyde-free cement, dry after sizing
5.0~10.0s, and moisture content of the raw material is controlled 8.0~11.0%；
C applies fireproof powder: in separation system recycle stock fans entrance, determining by adjusting spiral frequency and fireproof powder is added
Amount；
D mats formation and precompressed: fiber with the pressure of 115~165bar carries out slab precompressed after mating formation by machinery, and to slab into
Row edging；
E plate hot pressing: continuous flat press first, second, third and fourth is set, the hot pressing temperature in 5th area is respectively 220~235 DEG C, 220
~235 DEG C, 213~228 DEG C, 185~200 DEG C, 170~185 DEG C, set the hot pressing pressure in corresponding the first to five area as 250~
375 N/cm2, 60~290 N/cm2, 40~80 N/cm2, 90~200 N/cm2, 20~160 N/cm2, to the slab after precompressed
It is that 8.8~9.2s/mm carries out hot pressing in thermal ventilation；
The post-processing of F plate: the plate for completing hot pressing is placed in constant temperature and humidity 40 under the conditions of 25~30 DEG C of temperature, humidity 50~60%
~56h, then sanding by inspection, sawing, are packaged to obtain the final product.
2. the production technology according to claim 1 without aldehyde flame retardant fibre board, it is characterised in that: boiling described in step A with
Heat mill process is, wood chip is placed in 70~85 DEG C of progress pre-cooked after washing, then through cooker steam pressure 8.0~
9.0bar, the boiling that 2.5~3.5min is carried out under conditions of 160~165 DEG C of temperature, to carrying out heat again after chip steaming softening
Mill.
3. the production technology according to claim 1 without aldehyde flame retardant fibre board, it is characterised in that: apply nothing described in step B
The amount of aldehyde adhesive is 30~35kg/m3, the aldehyde-free cement is isocyanates MDI.
4. the production technology according to claim 1 without aldehyde flame retardant fibre board, it is characterised in that: fireproof powder described in step C
Addition when, C grades of flame-retardant boards addition fireproof powders are 38~43kg/m3, oxygen index (OI) is not less than 34%；B grades of flame-retardant boards add fireproof powder
For 88~93kg/m3, oxygen index (OI) is not less than 48%.
5. the production technology according to claim 1 without aldehyde flame retardant fibre board, it is characterised in that: fireproof powder described in step C
Density board fireproof powder is produced by Henan Forestever Wood Tech Co., Ltd..
6. the production technology according to claim 1 without aldehyde flame retardant fibre board, it is characterised in that: in press described in step E
Entrance use sprays steel strip surface without aldehyde plate release agent.
7. the production technology according to claim 1 without aldehyde flame retardant fibre board, it is characterised in that: hot pressing will be completed in step F
Plate be placed in constant temperature and humidity 48h under the conditions of 25~30 DEG C of temperature, humidity 50~60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789695.9A CN110480788A (en) | 2019-08-26 | 2019-08-26 | A kind of production technology of no aldehyde flame retardant fibre board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910789695.9A CN110480788A (en) | 2019-08-26 | 2019-08-26 | A kind of production technology of no aldehyde flame retardant fibre board |
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| CN110480788A true CN110480788A (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115674394A (en) * | 2022-11-04 | 2023-02-03 | 大亚木业（茂名）有限公司 | Manufacturing method of medium-high density formaldehyde-free fiberboard |
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| CN103406970A (en) * | 2013-08-29 | 2013-11-27 | 广西三威林产工业有限公司 | Method for manufacturing flame-retardant medium-high density fiberboard |
| JP2015160366A (en) * | 2014-02-27 | 2015-09-07 | ホクシン株式会社 | Fiberboard and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115674394A (en) * | 2022-11-04 | 2023-02-03 | 大亚木业（茂名）有限公司 | Manufacturing method of medium-high density formaldehyde-free fiberboard |
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Application publication date: 20191122 |