CN110370420A - A kind of preparation method of corn stover recombinant material - Google Patents
A kind of preparation method of corn stover recombinant material Download PDFInfo
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- CN110370420A CN110370420A CN201910448120.0A CN201910448120A CN110370420A CN 110370420 A CN110370420 A CN 110370420A CN 201910448120 A CN201910448120 A CN 201910448120A CN 110370420 A CN110370420 A CN 110370420A
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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
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/20—Compounds of alkali metals or ammonium
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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
- B27K5/001—Heating
-
- 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
- B27K5/06—Softening or hardening of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/08—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood fibres, e.g. produced by tearing
-
- 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
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
-
- 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
- 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
- B27N3/12—Moulding of mats from 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
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
- B27N3/143—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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a kind of preparation methods of corn stover recombinant material, make full use of the mechanical property of the original vertical fiber of stalk, the good mechanical properties for making the corn stover recombinant material of production, can be used as structural material applications, solve the limitation of existing stalk application.
Description
Technical field
The present invention relates to agricultural crop straw technical field, more particularly to a kind of preparation of corn stover recombinant material
Method.
Background technique
China's Forest Resources lack, and implement the natural forest protection policy closed hillsides to facilitate afforestation, conceded the land to forestry for many years, effectively promote
Into the sustainable development of China's forestry industry, but since the development of the national economy and people's daily life are to Wood demand
Be continuously increased, need a large amount of natural timber of import every year, therefore, alleviate wood raw material disparities between supply and demand it is extremely urgent.And at present
About 700,000,000 tons of the annual straw yield in China becomes agricultural residue because utilization rate is not high, directly burns and not only causes to provide
Source waste, and the haze formed seriously polluted atmospheric environment, endangers people's health, influences traffic safety.Therefore, for
Stalk efficiently use extremely important, and common stalk effective use means are to prepare artificial straw material at present.
But limited currently on the market by artificial straw material manufacture craft, the stalk building materials of manufacture are only capable of as non-knot
Structure material uses, and greatly reduces the application value and utilization rate of stalk, not only limits the further development of artificial straw material, but also
Cause straw utilization rate low.
Therefore it provides a kind of preparation method of corn stover recombinant material is to improve the utility value of artificial straw material, improve
The problem of utilization rate of stalk is those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, making full use of stalk original the present invention provides a kind of preparation method of corn stover recombinant material
The mechanical property of vertical fiber, makes the good mechanical properties of the corn stover recombinant material of production, can be used as structural material applications,
Solves the limitation of existing stalk application.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of preparation method of corn stover recombinant material, specifically comprises the following steps:
(1) first corn stover is carried out discongesting processing and obtains corn stalk fiber beam；
(2) then, by corn stalk fiber Shu Jinhang thermophilic digestion or charing process；
(3) then, sizing processing and drying process are carried out to corn stalk fiber Shu Yici；
(4) the corn stalk fiber Shu Jinhang after drying is mated formation；
(5) corn stalk fiber Shu Yici is subjected to precompressed tissue culture, cold pressing and curing process and obtains corn stalk fiber weight
Group square bar.
The preparation method preparation for having the technical effect that corn stover recombinant material disclosed by the invention of above-mentioned optimal technical scheme
Process is simple, and can make full use of the mechanical property of the original vertical fiber of stalk, makes the corn stover weight being prepared
The good mechanical properties of group material, can be used as structural material applications.
Preferably, the step (1) specifically: first the corn stover that autumn harvest season collects is rived, defoliation, is gone
Flesh, removal surface sclerderm smooth surface processing, then carry out rolling discongesting to obtain corn stalk fiber beam.
The beneficial effect of above-mentioned optimal technical scheme is: the present invention to corn stover successively through riving, defoliation, go flesh,
Removal surface sclerderm smooth surface rolls and discongests processing, successively splits so that corn stover be made to form longitudinal fiber, laterally staggered phase
Corn stalk fiber beam even.
Preferably, the step (2) specifically: the thermophilic digestion processing is that corn stalk fiber beam is added to boiling
Chi Zhong, is then added the NaOH solution that mass fraction is 0.5~3%, and control boiling temperature is 70~100 DEG C；At the charing
Reason is that corn stalk fiber beam is added into carbonizing kiln, is then 6~10h controlled at 150~300 DEG C, carbonization time.
The beneficial effect of above-mentioned optimal technical scheme is: mass fraction is added in thermophilic digestion treatment process and is by the present invention
0.5~3% NaOH solution can accelerate corn stover softening.
Preferably, sizing is handled in the step (3) specifically: the glue that first configuration concentration is 8~25% is added to leaching
In glue pond；Then corn stalk fiber beam obtained in step (2) is added into impregnation pond and carries out dipping process, the impregnation time
It is 20~40 DEG C for 5~30min, impregnation temperature, control resin added is 6~20%；It is placed on after sizing on drip glue platform and carries out 3
~ageing for 24 hours drains.
Preferably, the glue is configured to using cyanurotriamide modified urea resin or phenol-formaldehyde resin modified, the glue
Solid content 40~60%, pH value 9~12, free formaldehyde content < 0.5%, free phenol < 1%, viscosity < 50mPa.s (25
℃)。
The beneficial effect of above-mentioned optimal technical scheme is: glue that the present invention uses, dipping method can make stalk fibre
Resin added reaches 6~20% on beam, while keeping no liquid drip phenomenon on stalk fibre beam.
Preferably, be dried in the step (3) specifically: will by sizing treated stalk fibre beam is added to
In drying kiln, 50~100 DEG C of drying temperature, 1~8h. of drying time are set
The beneficial effect of above-mentioned optimal technical scheme is: the present invention can be by corn stalk fiber beam by being dried
Moisture control is 5~15%.
Preferably, the step (4) specifically: the stalk fibre beam after drying is added to spreading machine, then along straw
The uniform filler in stalk fiber direction, finally truncation are the corn stalk fiber beam of 2~4m long.
Having the technical effect that for above-mentioned optimal technical scheme is mated formation using method disclosed by the invention, along stalk fibre
The uniform filler in direction, so as to so that the internal fiber direction of finally formed corn stalk fiber recombinant material is consistent, mechanical property
It can improve.
Preferably, in the step (5) precompressed tissue culture handle are as follows: by the corn stalk fiber beam after above-mentioned truncation be added to
On preformer, then pressurize simultaneously in vertical, horizontal direction or vertical levels, pressure control obtains corn in 1~8Mpa
Stalk beam assembly；Cold pressing treatment are as follows: corn stalk fiber beam assembly is added into cold press, control pressure be 20~
100Mpa, cold pressing 1~10min of time, obtain corn stalk fiber recombinant material blank, are completed at the same time corn stalk fiber recombinant material
The mold of blank locks.
The beneficial effect of above-mentioned optimal technical scheme is: the present invention is handled by precompressed tissue culture and cold pressing treatment makes corn stalk
Stalk fiber beam is crosslinked recombination under strong pressure, so that density is in 750~1600Kg/m after making cold pressing3。
Preferably, curing process in the step (5) are as follows: corn stalk fiber recombinant material blank is added to solidification kiln
In, control temperature rise speed is 5~20 DEG C 5~20 DEG C/h, temperature drop speed/h, and setting solidification temperature is 80~180 DEG C, is warming up to solid
Change temperature, solidification is cooled to 20~80 DEG C after 5~24 hours, release demoulding after grinding tool locking, obtains corn stalk fiber recombination
Square bar.
It preferably, further include step (6) specifically: recombinate square bar both ends material using butting saw truncation corn stalk fiber
Uneven part obtains corn stover recombinant material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, corn stalk
There are the gaps 3~10cm between stalk fiber recombinant material, control 15~50 DEG C of temperature, place 10~50d.
The beneficial effect of above-mentioned optimal technical scheme is: the present invention handles the corn stalk that can make by step (6)
Stalk recombinant material meets process requirement, and the moisture of corn stalk fiber recombinant material can be made flat after health preserving room is placed
Weighing apparatus, to obtain the more stable corn stover recombinant material of performance.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides a kind of corn stover weights
The preparation method of group material, has the following beneficial effects:
(1) preparation method disclosed by the invention is easy to operate, is conducive to carry out industrialized production；
(2) method disclosed by the invention makes full use of the mechanical property of the original vertical fiber of stalk, makes the corn of production
The good mechanical properties of stalk recombining material, can be used as structural material applications, solve the limitation of existing stalk application；
(3) the stalk corn recombinant material being prepared using method disclosed by the invention can be quoted as structural wood, from
And valuable wildwood resource can be saved, stalk comprehensive utilization is pushed, achievees the purpose that stalk generation wood, to promotion circulation warp
Ji, low-carbon emission have very real meaning.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is the survey report of corn stover recombinant material；
Fig. 2 attached drawing is the survey report of corn stover recombinant material；
Fig. 3 attached drawing is the survey report of corn stover recombinant material.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The embodiment of the invention discloses a kind of preparation methods of corn stover recombinant material, specifically comprise the following steps:
(1) first the corn stover that autumn harvest season collects rived, defoliation, remove flesh, removal surface sclerderm smooth surface processing,
Then it carries out rolling discongesting to obtain corn stalk fiber beam；
(2) then, by corn stalk fiber Shu Jinhang thermophilic digestion or charing process；
(3) then, to corn stalk fiber Shu Jinhang sizing handle: first configuration concentration be 8~25% glue be added to
In impregnation pond；Then corn stalk fiber beam obtained in step (2) is added into impregnation pond and carries out dipping process, when impregnation
Between for 5~30min, impregnation temperature be 20~40 DEG C, control resin added is 6~20%；It is enterprising that drip glue platform is placed on after sizing
Row 3~ageing for 24 hours drains；
(4) will by sizing, treated that stalk fibre beam is added to drying kiln drying, drying temperature 50~100 is set
DEG C, 1~8h of drying time, by the moisture control of corn stalk fiber beam 5~15%.
(5) the stalk fibre beam after drying is added to spreading machine, then along the uniform filler in stalk fibre direction, finally
Truncation is the corn stalk fiber beam of 2~4m long；
(6) the corn stalk fiber beam after above-mentioned truncation is added to preformer, then in vertical, horizontal direction or perpendicular
It pressurizes simultaneously to horizontal, pressure control obtains corn stover beam assembly in 1~8Mpa；
(7) above-mentioned corn stalk fiber beam assembly is added into cold press, when control pressure is 20~100Mpa, is cold-pressed
Between 1~10min, obtain corn stalk fiber recombinant material blank, be completed at the same time corn stalk fiber recombinant material blank mold lock
It is fixed.
(8) corn stalk fiber recombinant material blank is added into solidification kiln, control temperature rise speed is 5~20 DEG C/h, temperature
5~20 DEG C/h of reduction of speed degree, setting solidification temperature are 80~180 DEG C, are warming up to solidification temperature, and solidification is cooled to after 5~24 hours
20~80 DEG C, demoulding after grinding tool locking is released, obtains corn stalk fiber recombination square bar.
(9) corn stover is obtained using the uneven part of butting saw truncation corn stalk fiber recombination square bar both ends material to recombinate
Material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, between corn stalk fiber recombinant material there are 3~
The gap 10cm controls 15~50 DEG C of temperature, places 10~50d.
For further optimisation technique scheme, thermophilic digestion processing is that corn stalk fiber beam is added to boiling pond
In, the NaOH solution that mass fraction is 0.5~3% is then added, control boiling temperature is 70~100 DEG C；
For further optimisation technique scheme, charing process is that corn stalk fiber beam is added into carbonizing kiln, so
It is afterwards 6~10h controlled at 150~300 DEG C, carbonization time.
For further optimisation technique scheme, glue is matched using cyanurotriamide modified urea resin or phenol-formaldehyde resin modified
It is made, the solid content 40~60% of the glue, pH value 9~12, free formaldehyde content < 0.5%, free phenol < 1%, viscosity <
50mPa.s(25℃)。
Embodiment 1
The embodiment of the present invention 1 discloses a kind of preparation method of corn stover recombinant material, specifically comprises the following steps:
(1) first the corn stover that autumn harvest season collects rived, defoliation, remove flesh, removal surface sclerderm smooth surface processing,
Then it carries out rolling discongesting to obtain corn stalk fiber beam；
(2) then, by the processing of corn stalk fiber Shu Jinhang thermophilic digestion, corn stalk fiber beam is added to boiling pond
In, the NaOH solution that mass fraction is 3% is then added, control boiling temperature is 70 DEG C；
(3) then, handle corn stalk fiber Shu Jinhang sizing: the glue that first configuration concentration is 25% is added to impregnation
Chi Zhong；Then corn stalk fiber beam obtained in step (2) is added into impregnation pond and carries out dipping process, the impregnation time is
30min, impregnation temperature are 40 DEG C, and control resin added is 20%；It is placed on to be aged for 24 hours on drip glue platform after sizing and drain；
Glue is configured to using cyanurotriamide modified urea resin, and the solid content 60% of glue, pH value 12, free formaldehyde content <
0.5%, free phenol < 1%, viscosity < 50mPa.s (25 DEG C)；
(4) will by sizing, treated that stalk fibre beam is added to drying kiln drying, 100 DEG C of drying temperature of setting,
Drying time 8h, by the moisture control of corn stalk fiber beam 15%.
(5) the stalk fibre beam after drying is added to spreading machine, then along the uniform filler in stalk fibre direction, finally
Truncation is the corn stalk fiber beam of 4m long；
(6) the corn stalk fiber beam after above-mentioned truncation is added to preformer, then in vertical, horizontal direction or perpendicular
It pressurizes simultaneously to horizontal, pressure control obtains corn stover beam assembly in 8Mpa；
(7) above-mentioned corn stalk fiber beam assembly is added into cold press, control pressure is 2100Mpa, is cold-pressed the time
10min obtains corn stalk fiber recombinant material blank, is completed at the same time the mold locking of corn stalk fiber recombinant material blank；
(8) corn stalk fiber recombinant material blank is added into solidification kiln, control temperature rise speed is 20 DEG C/h, temperature drop is fast
20 DEG C/h is spent, setting solidification temperature is 180 DEG C, is warming up to solidification temperature, and solidification is cooled to 20 DEG C after 24 hours, releases grinding tool lock
Demoulding after fixed obtains corn stalk fiber recombination square bar；
(9) corn stover is obtained using the uneven part of butting saw truncation corn stalk fiber recombination square bar both ends material to recombinate
Material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, there are 10cm between corn stalk fiber recombinant material
Gap controls temperature 50 C, places 50d.
Embodiment 2
The embodiment of the invention discloses a kind of preparation methods of corn stover recombinant material, specifically comprise the following steps:
(1) first the corn stover that autumn harvest season collects rived, defoliation, remove flesh, removal surface sclerderm smooth surface processing,
Then it carries out rolling discongesting to obtain corn stalk fiber beam；
(2) then, by the processing of corn stalk fiber Shu Jinhang thermophilic digestion, corn stalk fiber beam is added to boiling pond
In, the NaOH solution that mass fraction is 0.5% is then added, control boiling temperature is 100 DEG C；
(3) then, handle corn stalk fiber Shu Jinhang sizing: the glue that first configuration concentration is 8% is added to impregnation
Chi Zhong；Then corn stalk fiber beam obtained in step (2) is added into impregnation pond and carries out dipping process, the impregnation time is
5min, impregnation temperature are 20 DEG C, and control resin added is 6%；Progress 3h ageing on drip glue platform is placed on after sizing to drain；Glue
It is configured to using phenol-formaldehyde resin modified, the solid content 60% of glue, pH value 12, free formaldehyde content < 0.5%, free phenol <
1%, viscosity < 50mPa.s (25 DEG C)；
(4) will by sizing, treated that stalk fibre beam is added to drying kiln drying, 100 DEG C of drying temperature of setting,
Drying time 8h, by the moisture control of corn stalk fiber beam 15%.
(5) the stalk fibre beam after drying is added to spreading machine, then along the uniform filler in stalk fibre direction, finally
Truncation is the corn stalk fiber beam of 2m long；
(6) the corn stalk fiber beam after above-mentioned truncation is added to preformer, then in vertical, horizontal direction or perpendicular
It pressurizes simultaneously to horizontal, pressure control obtains corn stover beam assembly in 8Mpa；
(7) above-mentioned corn stalk fiber beam assembly is added into cold press, control pressure is 100Mpa, is cold-pressed the time
10min obtains corn stalk fiber recombinant material blank, is completed at the same time the mold locking of corn stalk fiber recombinant material blank；
(8) corn stalk fiber recombinant material blank is added into solidification kiln, control temperature rise speed is 20 DEG C/h, temperature drop is fast
20 DEG C/h is spent, setting solidification temperature is 180 DEG C, is warming up to solidification temperature, and solidification is cooled to 80 DEG C after 24 hours, releases grinding tool lock
Demoulding after fixed obtains corn stalk fiber recombination square bar；
(9) corn stover is obtained using the uneven part of butting saw truncation corn stalk fiber recombination square bar both ends material to recombinate
Material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, there are 10cm between corn stalk fiber recombinant material
Gap controls 15 DEG C of temperature, places 10d.
Embodiment 3
The embodiment of the present invention 3 discloses a kind of preparation method of corn stover recombinant material, specifically comprises the following steps:
(1) first the corn stover that autumn harvest season collects rived, defoliation, remove flesh, removal surface sclerderm smooth surface processing,
Then it carries out rolling discongesting to obtain corn stalk fiber beam；
(2) then, by corn stalk fiber Shu Jinhang charing process, corn stalk fiber beam is added into carbonizing kiln,
Then controlled at 300 DEG C, carbonization time 6h；
(3) then, handle corn stalk fiber Shu Jinhang sizing: the glue that first configuration concentration is 8% is added to impregnation
Chi Zhong；Then corn stalk fiber beam obtained in step (2) is added into impregnation pond and carries out dipping process, the impregnation time is
5min, impregnation temperature are 20 DEG C, and control resin added is 6%；Progress 3h ageing on drip glue platform is placed on after sizing to drain；Glue
Be configured to using cyanurotriamide modified urea resin, the solid content 60% of glue, pH value 12, free formaldehyde content < 0.5%,
Free phenol < 1%, viscosity < 50mPa.s (25 DEG C)；
(4) will by sizing, treated that stalk fibre beam is added to drying kiln drying, 100 DEG C of drying temperature of setting,
Drying time 8h, by the moisture control of corn stalk fiber beam 7%.
(5) the stalk fibre beam after drying is added to spreading machine, then along the uniform filler in stalk fibre direction, finally
Truncation is the corn stalk fiber beam of 2m long；
(6) the corn stalk fiber beam after above-mentioned truncation is added to preformer, then in vertical, horizontal direction or perpendicular
It pressurizes simultaneously to horizontal, pressure control obtains corn stover beam assembly in 8Mpa；
(7) above-mentioned corn stalk fiber beam assembly is added into cold press, control pressure is 100Mpa, is cold-pressed the time
10min obtains corn stalk fiber recombinant material blank, is completed at the same time the mold locking of corn stalk fiber recombinant material blank.
(8) corn stalk fiber recombinant material blank is added into solidification kiln, control temperature rise speed is 20 DEG C/h, temperature drop is fast
20 DEG C/h is spent, setting solidification temperature is 180 DEG C, is warming up to solidification temperature, and solidification is cooled to 60 DEG C after 24 hours, releases grinding tool lock
Demoulding after fixed obtains corn stalk fiber recombination square bar.
(9) corn stover is obtained using the uneven part of butting saw truncation corn stalk fiber recombination square bar both ends material to recombinate
Material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, there are 10cm between corn stalk fiber recombinant material
Gap controls 15 DEG C of temperature, places 10d.
Embodiment 4
The embodiment of the present invention 4 discloses a kind of preparation method of corn stover recombinant material, specifically comprises the following steps:
(1) first the corn stover that autumn harvest season collects rived, defoliation, remove flesh, removal surface sclerderm smooth surface processing,
Then it carries out rolling discongesting to obtain corn stalk fiber beam；
(2) then, by corn stalk fiber Shu Jinhang charing process, corn stalk fiber beam is added into carbonizing kiln,
Then controlled at 150 DEG C, carbonization time 10h；
(3) then, handle corn stalk fiber Shu Jinhang sizing: the glue that first configuration concentration is 25% is added to impregnation
Chi Zhong；Then corn stalk fiber beam obtained in step (2) is added into impregnation pond and carries out dipping process, the impregnation time is
30min, impregnation temperature are 40 DEG C, and control resin added is 20%；It is placed on to be aged for 24 hours on drip glue platform after sizing and drain；
Glue is configured to using phenol-formaldehyde resin modified, the solid content 60% of the glue, pH value 12, free formaldehyde content < 0.5%,
Free phenol < 1%, viscosity < 50mPa.s (25 DEG C)；
(4) will by sizing, treated that stalk fibre beam is added to drying kiln drying, 50 DEG C of drying temperature of setting is dried
Dry time 8h, by the moisture control of corn stalk fiber beam 15%.
(5) the stalk fibre beam after drying is added to spreading machine, then along the uniform filler in stalk fibre direction, finally
Truncation is the corn stalk fiber beam of 4m long；
(6) the corn stalk fiber beam after above-mentioned truncation is added to preformer, then in vertical, horizontal direction or perpendicular
It pressurizes simultaneously to horizontal, pressure control obtains corn stover beam assembly in 8Mpa；
(7) above-mentioned corn stalk fiber beam assembly is added into cold press, control pressure is 100Mpa, is cold-pressed the time
10min obtains corn stalk fiber recombinant material blank, is completed at the same time the mold locking of corn stalk fiber recombinant material blank.
(8) corn stalk fiber recombinant material blank is added into solidification kiln, control temperature rise speed is 20 DEG C/h, temperature drop is fast
20 DEG C/h is spent, setting solidification temperature is 180 DEG C, is warming up to solidification temperature, and solidification is cooled to 40 DEG C after 24 hours, releases grinding tool lock
Demoulding after fixed obtains corn stalk fiber recombination square bar.
(9) corn stover is obtained using the uneven part of butting saw truncation corn stalk fiber recombination square bar both ends material to recombinate
Material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, there are 10cm between corn stalk fiber recombinant material
Gap controls temperature 50 C, places 50d.
The corn stover recombinant material that above-described embodiment 1~4 is prepared is tested for the property.
1, the corn stover recombinant material that Examples 1 to 4 is prepared is sent to (the Jilin Province's forestry production of professional testing agency
(quotient) quality supervision and inspection station) it detects, obtained survey report is as shown in Figures 1 to 3.
The burst size of methanal for the corn recombinant material that the present invention known to testing result is prepared reaches national E1 grade standard
≤ 1.5mg/l, density of material: 750~1600Kg/m3, static bending strength >=35MPa, elasticity modulus >=6000MPa, rift grain resistance to compression
>=40MPa, supine human body >=1000N, impact flexibility >=140KJ/ ㎡, combustibility reach fire retardant B1 grades of requirement.
2, the corn stover recombinant material that Examples 1 to 4 is prepared respectively is made by resistance to compression, tension standard specimen standard
Test specimen, each embodiment make 7 test specimens respectively, then use the standard test method of Wood mechanical property, and it is anti-to carry out rift grain
The result that pressure test, the test of rift grain tension, compression strength perpendicular to grain test and elasticity modulus are tested is as shown in the following table 1~6.
(1) corn stover recombinant material tensile strength parallel to grain test result is as shown in table 1, tests number for tensile strength parallel to grain
According to statistics calculating is carried out, the results are shown in Table 2.
1 tensile strength parallel to grain test result of table
2 tensile strength parallel to grain test data of table counts calculated result
By the data of above-mentioned table 1~2 it is known that the corn stover recombination that 1~4 method of the embodiment of the present invention is prepared
Timber carries out the test of rift grain tension according to the standard test method of material mechanical property, obtains tensile strength parallel to grain average out to
89.1MPa is illustrated the corn stover recombinant material excellent in mechanical performance being prepared using the method for Examples 1 to 4, can replace
Timber effectively solves the problems, such as that timber resources is in short supply.
(2) corn stover recombinant material parallel-to-grain compressive strength test result is as shown in table 3, and parallel-to-grain compressive strength is tested and is tied
Fruit carries out statistics calculating, and the results are shown in Table 4.
3 parallel-to-grain compressive strength test result of table
4 parallel-to-grain compressive strength test data of table counts calculated result
By the data of above-mentioned table 3~4 it is known that the corn stover recombination that 1~4 method of the embodiment of the present invention is prepared
Timber carries out parallel-to-grain compressive strength test according to the standard test method of material mechanical property, obtains parallel-to-grain compressive strength average out to
48.6MPa is illustrated the corn stover recombinant material excellent in mechanical performance being prepared using the method for Examples 1 to 4, can replace
Timber effectively solves the problems, such as that timber resources is in short supply.
(3) corn stover recombinant material compression strength perpendicular to grain test result is as shown in table 5, and compression strength perpendicular to grain is tested and is tied
Fruit carries out statistics calculating, and the results are shown in Table 6.
5 compression strength perpendicular to grain test result of table
6 compression strength perpendicular to grain test data of table counts calculated result
By the data of above-mentioned table 5~6 it is known that the corn stover recombination that 1~4 method of the embodiment of the present invention is prepared
Timber carries out compression strength perpendicular to grain test according to the standard test method of Wood mechanical property, obtains compression strength perpendicular to grain average out to
10.6MPa is illustrated the corn stover recombinant material excellent in mechanical performance being prepared using the method for Examples 1 to 4, can replace
Timber effectively solves the problems, such as that timber resources is in short supply.
(4) corn stover recombinant material progress rift grain pressure-proof elasticity modulus test result is as shown in table 7, for rift grain resistance to compression bullet
Property modulus test result carries out statistics calculating, and the results are shown in Table 8.
7 rift grain pressure-proof elasticity modulus test result of table
8 rift grain pressure-proof elasticity modulus test data of table counts calculated result
It can obviously be learnt by the result of above-mentioned table 7~8: the corn stover that 1~4 method of the embodiment of the present invention is prepared
It recombinates timber and carries out the test of rift grain pressure-proof elasticity modulus according to the standard test method of Wood mechanical property, obtain rift grain resistance to compression bullet
Property modulus average out to 9008MPa, illustrate the corn stover recombinant material mechanical property that the method using Examples 1 to 4 is prepared
It is excellent, there is prospect of the application, can effectively solve the problems, such as that timber resources is in short supply.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of preparation method of corn stover recombinant material, which is characterized in that specifically comprise the following steps:
(1) first corn stover is carried out discongesting processing and obtains corn stalk fiber beam；
(2) then, by corn stalk fiber Shu Jinhang thermophilic digestion or charing process；
(3) then, sizing processing and drying process are carried out to corn stalk fiber Shu Yici；
(4) the corn stalk fiber Shu Jinhang after drying is mated formation；
(5) corn stalk fiber Shu Yici is subjected to precompressed tissue culture, cold pressing and curing process and obtains corn stalk fiber recombination side
Material.
2. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that the step (1)
Specifically: first the corn stover that autumn harvest season collects is rived, defoliation, removes flesh, removal surface sclerderm smooth surface processing, then
Roll and discongests to obtain corn stalk fiber beam.
3. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that the step (2)
Specifically: the thermophilic digestion processing is that corn stalk fiber beam is added into boiling pond, and it is 0.5 that mass fraction, which is then added,
~3% NaOH solution, control boiling temperature are 70~100 DEG C；The charing process be corn stalk fiber beam is added to
It is then 6~10h controlled at 150~300 DEG C, carbonization time in carbonizing kiln.
4. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that the step (3)
Middle sizing processing specifically: the glue that first configuration concentration is 8~25% is added into impregnation pond；Then it will be obtained in step (2)
Corn stalk fiber beam be added into impregnation pond and carry out dipping process, the impregnation time is 5~30min, impregnation temperature be 20~
40 DEG C, control resin added is 6~20%；Progress 3 on drip glue platform~ageing for 24 hours is placed on after sizing to drain.
5. a kind of preparation method of corn stover recombinant material according to claim 4, which is characterized in that the glue uses
Cyanurotriamide modified urea resin or phenol-formaldehyde resin modified are configured to, and the solid content 40~60% of the glue, pH value 9~
12, free formaldehyde content < 0.5%, free phenol < 1%, viscosity < 50mPa.s (25 DEG C).
6. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that the step (3)
Middle drying process specifically: will by sizing, treated that stalk fibre beam is added into drying kiln, setting drying temperature 50~
100 DEG C, 1~8h of drying time.
7. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that the step (4)
Specifically: the stalk fibre beam after drying is added to spreading machine, then along the uniform filler in stalk fibre direction, is finally truncated
For the corn stalk fiber beam of 2~4m long.
8. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that the step (5)
Middle precompressed tissue culture processing are as follows: the corn stalk fiber beam after above-mentioned truncation is added to preformer, then in vertical, horizontal side
To or vertical levels pressurize simultaneously, pressure control in 1~8Mpa obtains corn stover beam assembly；Cold pressing treatment are as follows: will be beautiful
Rice stalk fibre beam assembly is added into cold press, and control pressure is 20~100Mpa, is cold-pressed 1~10min of time, obtains corn
Stalk fibre recombinant material blank is completed at the same time the mold locking of corn stalk fiber recombinant material blank.
9. a kind of preparation method of corn stover recombinant material according to claim 8, which is characterized in that the step (5)
Middle curing process are as follows: by corn stalk fiber recombinant material blank be added to solidification kiln in, control temperature rise speed be 5~20 DEG C/h,
5~20 DEG C/h of temperature drop speed, setting solidification temperature are 80~180 DEG C, are warming up to solidification temperature, and solidification cools down after 5~24 hours
To 20~80 DEG C, demoulding after grinding tool locking is released, obtains corn stalk fiber recombination square bar.
10. a kind of preparation method of corn stover recombinant material according to claim 1, which is characterized in that further include step
(6) specifically: obtain corn stover using the uneven part of butting saw truncation corn stalk fiber recombination square bar both ends material and recombinate
Material；Then in health preserving room, corn stalk fiber recombinant material is neatly packed, between corn stalk fiber recombinant material there are 3~
The gap 10cm controls 15~50 DEG C of temperature, places 10~50d.
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| CN111360953A (en) * | 2020-04-01 | 2020-07-03 | 北华大学 | Carbon fiber reinforced corn straw artificial board and manufacturing method thereof |
| CN111546455A (en) * | 2020-04-02 | 2020-08-18 | 北华大学 | Corn straw fiber flame-retardant recombined laminated wood and preparation method thereof |
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Application publication date: 20191025 |