CN107936305A - A kind of preparation method of no glue middle-high density vegetable fibre board - Google Patents
A kind of preparation method of no glue middle-high density vegetable fibre board Download PDFInfo
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- CN107936305A CN107936305A CN201711487452.7A CN201711487452A CN107936305A CN 107936305 A CN107936305 A CN 107936305A CN 201711487452 A CN201711487452 A CN 201711487452A CN 107936305 A CN107936305 A CN 107936305A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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Abstract
The present invention relates to a kind of preparation method of no glue middle-high density vegetable fibre board, belong to technical field of composite materials.The present invention is using dregs of beans and manioc waste as raw material, do not add adhesive, utilize the soybean protein isolate and starch being rich in dregs of beans and manioc waste, carbohydrate is discharged under high temperature action and colloidal substance is crosslinked, plant fiber is connected as adhesive, and hot pressing is prepared into the plate of the nearly whole plant fiber of middle-high density, improves interfibrous Hydrogenbond, the quality of middle-high density plant fiber functional material is further improved, can the degradable and noxious material release such as formaldehydeless in use；Material component of the present invention is simple, derives from a wealth of sources, cheap, it is nontoxic, assign vegetable fibre board good machining property, there is good deflection, curvature, toughness, pulling force and water resistance, its hardness, bond strength and toughness all reach the international most advanced level of similar product.
Description
Technical field
The present invention relates to a kind of preparation method of no glue middle-high density vegetable fibre board, belong to technical field of composite materials.
Background technology
In the case where advocating the overall background of ecological, environmental protective, environment friendly composite material increasingly attracts people's attention.Plant fiber
Composite material has environmentally friendly, degradable, sound-absorbing, many good characteristics such as heat-insulated, is that demand increases in all composite materials in recent years
Long most fast material.The industries such as plant fiber is for building, automobile, Furniture manufacture, interior decoration have obvious advantage.
Natural plant fibre resource very abundant in nature, plant can be produced substantial amounts of organic by photosynthesis
Renewable fiber, annual worldwide production 1012The cellulose that ton naturally synthesizes, except very little part is used for papermaking, weaving and chemistry fibre
Dimension, mostly wastes in vain as fuel or waste material.Therefore plant fiber resource is made full use of, on the one hand, can subtract
Few dependence of the people to nonrenewable resources, reduces the accumulation of plant fiber resource solid waste or burns pollution problem；
On the other hand, plant fiber functional material is a kind of material with composite performances such as environmentally friendly, degradable, heat-insulation and heat-preservation, sound absorptions,
By taking indoor wall ornament materials as an example, it promotes and applies the energy consumption that can greatly reduce building, noise pollution, mitigates building
Thing dead weight etc..
Composite material of plant fiber is divided by density at present, can be roughly divided into following five kinds：Ultra high density >=1000kg/
m3；High density 800kg/m3~1000kg/m3；Midst density 450kg/m3~880kg/m3；Low-density 200kg/m3~500kg/m3；
Extremely-low density≤100kg/m3。
Fibre mould product is one kind of whole plant fiber or nearly all-plant fiber composite, both at home and abroad in fiber mould
It is often preforming using wet method in terms of the research of moulding material is concentrated mainly on padded coaming packaging, then with dry method or semidry method
Shaping obtains the low-density moulded material with comfort cushioning performance.Such material since apparent property is poor, fall by easy hair loss
Powder, therefore be difficult to be used as the packaging materials of the products such as more demanding precision instrument, electronic product, is only used for egg tray, thick
Outer packing of rough industrial goods etc..
Middle-high density composite material of plant fiber at present, is prepared using dry method or semidry method, by plastics or resin glue more
The adhesive effect of stick, plant fiber powder or fibre bundle are bonded together, although such product has a wide range of applications
Space, but due to being limited by its preparation method, it is not environment-friendly composite material truly.Asked existing for such product
Topic mainly has that non-renewable resin, plastic fraction be excessive, anisotropic fiber interweaving characteristic is difficult to keep, not environmentally（Very much
Product inevitably has Form aldehyde release）, can not be degradable.These all become its bottle in some field further genralrlizations
Neck.Therefore explore a kind of whole plant fiber or the high-density plant fiber functional material close to whole plant fiber solves at present should
The limitation of class material is into the urgent problem currently faced.
The content of the invention
The technical problems to be solved by the invention：Cannot be complete for existing market middle-high density composite material of plant fiber
Degrade and have in use the noxious materials such as formaldehyde release the problem of, there is provided one kind without glue middle-high density plant fiber
The preparation method of plate.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）Dregs of beans drying and crushing is placed on evaporation boiler, 1~2h is heat-treated under vapor atmosphere, obtains pretreatment dregs of beans；
（2）Manioc waste drying and crushing is placed on evaporation boiler, 1~2h is heat-treated under vapor atmosphere, cassava must be pre-processed
Ground-slag；
（3）Take pretreatment dregs of beans, pretreatment cassava ground-slag to add mixing in deionized water and be transferred in fiberizer defibrination to beating degree
For 15~20 ° of SR, and it is that 1% salt acid for adjusting pH is 4.0~4.5 with mass fraction, adds potassium peroxydisulfate, be heated to 65~70
DEG C reaction 50~60min, obtain pretreatment of fiber slurries；
（4）It is that 5% sodium hydroxide solution adjusting pretreatment of fiber slurries pH is 9.0~10.0 with mass fraction, adds borax and add
Thermal response, and it is 0.5~1.0% to be diluted with water to solid content, obtains plant pulp stoste；
（5）Plant pulp stoste is injected into drainage and formation in type groove, obtains the wet formed body of fiber；
（6）By the wet formed body cold pressing sizing of fiber, removing moisture to moisture content is 10~30%, then is transferred to hot pressing in hot press and does
Dry processing, obtains no glue middle-high density vegetable fibre board.
Step（1）The heat treatment temperature is 160~180 DEG C.
Step（2）The heat treatment temperature is 180~200 DEG C.
Step（3）The pretreatment dregs of beans, the mass ratio of pretreatment cassava ground-slag are 1：1, the potassium peroxydisulfate dosage is
Pre-process the 0.1~0.3% of Soybean Meal.
Step（4）The borax dosage is the 1~3% of pretreatment Soybean Meal.
Step（4）The heating reaction process is 3~4h of insulation reaction at 60~70 DEG C, is continuously heating to 80~90 DEG C
1~2h of insulation reaction.
Step（5）The drainage and formation process is static 2~3s drainage and formations after 1~2s of air bubbling stirring.
Step（6）Hot-pressing drying processing be at 150~160 DEG C, hot-pressing drying processing 4 under 0.3~0.5MPa~
6min。
Compared with other methods, advantageous effects are the present invention：
（1）The present invention does not add adhesive using dregs of beans and manioc waste as raw material, utilizes the soybean being rich in dregs of beans and manioc waste point
From albumen and starch, discharge carbohydrate under high temperature action and colloidal substance is crosslinked, plant fiber is connected as adhesive, and
Hot pressing is prepared into the plate of the nearly whole plant fiber of middle-high density, improves interfibrous Hydrogenbond, highly dense in further improving
The quality of plant fiber functional material is spent, can the degradable and noxious material release such as formaldehydeless in use；
（2）Material component of the present invention is simple, derives from a wealth of sources, cheap, nontoxic, assigns vegetable fibre board good machinery
Processing performance, has good deflection, curvature, toughness, pulling force and water resistance, its hardness, bond strength and toughness are all
Reach the international most advanced level of similar product, fully meet that density is high, toughness is strong, hardness is big, inter-layer bonding force is strong, surface is smooth
Requirement, stable quality, meet environmental protection requirement, production cost is relatively low, and equipment investment is few, and technique is simple, easily starts, easily behaviour
Make, energy consumption is low, and few with water power consumption, production cost is low, and can realize clean manufacturing.
Embodiment
Crushed being added after dregs of beans natural air drying in pulverizer, cross 40 mesh sieves, the bean cake powder after sieving is placed in evaporation boiler
On, 1~2h is heat-treated under vapor atmosphere, controlled at 160~180 DEG C, dregs of beans must be pre-processed after being cooled to room temperature, will
Add in pulverizer and crush after manioc waste natural air drying, cross 40 mesh sieves, the cassava ground-slag after sieving is placed on evaporation boiler, in water
1~2h is heat-treated under vapor atmosphere, controlled at 180~200 DEG C, but to cassava ground-slag must be pre-processed after room temperature, take 200~
300g pre-process dregs of beans, 200~300g pretreatment cassava ground-slag, add 10~15L deionized waters in, at 35~40 DEG C with
It is 15~20 ° of SR to be transferred to defibrination to beating degree in fiberizer after 300~400r/min stirrings, 20~30min, and uses mass fraction
Be 4.0~4.5 for 1% salt acid for adjusting pH, add 0.4~0.6g potassium peroxydisulfates, be heated to 65~70 DEG C, continue stirring 50~
60min, obtains pretreatment of fiber slurries, with mass fraction be 5% sodium hydroxide solution adjust pretreatment of fiber slurries pH be 9.0~
10.0, add 4~6g boraxs, 3~4h of insulation reaction at 60~70 DEG C, be continuously heating to 80~90 DEG C of insulation reactions 1~
2h, it is 0.5~1.0% that solid content is diluted with water to after being cooled to room temperature, and plant pulp stoste is obtained, by plant pulp stoste injection moulding
In groove, using static 2~3s drainage and formations after 1~2s of air bubbling stirring, after dehydration, the wet formed body of fiber is obtained, by fibre
Wet formed body cold pressing sizing is tieed up, removing moisture to moisture content is 10~30%, then is transferred in hot press, at 150~160 DEG C, 0.3
Hot-pressing drying handles 4~6min under~0.5MPa, obtains no glue middle-high density vegetable fibre board.
Example 1
Crushed being added after dregs of beans natural air drying in pulverizer, cross 40 mesh sieves, the bean cake powder after sieving is placed on evaporation boiler,
1h is heat-treated under vapor atmosphere, controlled at 160 DEG C, dregs of beans must be pre-processed after being cooled to room temperature, by manioc waste natural wind
Add in pulverizer and crush after dry, cross 40 mesh sieves, the cassava ground-slag after sieving is placed on evaporation boiler, it is hot under vapor atmosphere
1h is handled, controlled at 180 DEG C, but to cassava ground-slag must be pre-processed after room temperature, takes 200g to pre-process dregs of beans, 200g pretreatments
Cassava ground-slag, adds in 10L deionized waters, is stirred at 35 DEG C with 300r/min and defibrination is transferred in fiberizer after 20min to kowtowing
Xie Du is 15 ° of SR, and is that 1% salt acid for adjusting pH is 4.0 with mass fraction, adds 0.4g potassium peroxydisulfates, is heated to 65 DEG C, after
Continuous stirring 50min, obtains pretreatment of fiber slurries, is that 5% sodium hydroxide solution adjusting pretreatment of fiber slurries pH is with mass fraction
9.0,4g boraxs are added, the insulation reaction 3h at 60 DEG C, is continuously heating to 80 DEG C of insulation reaction 1h, is cooled to room temperature Hou Jiashui
It is 0.5% to be diluted to solid content, obtains plant pulp stoste, plant pulp stoste is injected into type groove, after stirring 1s using air bubbling
Static 2s drainage and formations, after dehydration, obtain the wet formed body of fiber, and by the cold pressing sizing of fiber wet formed body, removing moisture is to containing
Water rate is 10%, then is transferred in hot press, and at 150 DEG C, hot-pressing drying handles 4min under 0.3MPa, obtains no glue middle-high density plant
Fiberboard.
Example 2
Crushed being added after dregs of beans natural air drying in pulverizer, cross 40 mesh sieves, the bean cake powder after sieving is placed on evaporation boiler,
1h is heat-treated under vapor atmosphere, controlled at 170 DEG C, dregs of beans must be pre-processed after being cooled to room temperature, by manioc waste natural wind
Add in pulverizer and crush after dry, cross 40 mesh sieves, the cassava ground-slag after sieving is placed on evaporation boiler, it is hot under vapor atmosphere
1h is handled, controlled at 190 DEG C, but to cassava ground-slag must be pre-processed after room temperature, takes 250g to pre-process dregs of beans, 250g pretreatments
Cassava ground-slag, adds in 12L deionized waters, is stirred at 38 DEG C with 350r/min and defibrination is transferred in fiberizer after 25min to kowtowing
Xie Du is 18 ° of SR, and is that 1% salt acid for adjusting pH is 4.2 with mass fraction, adds 0.5g potassium peroxydisulfates, is heated to 68 DEG C, after
Continuous stirring 55min, obtains pretreatment of fiber slurries, is that 5% sodium hydroxide solution adjusting pretreatment of fiber slurries pH is with mass fraction
9.5,5g boraxs are added, the insulation reaction 3h at 65 DEG C, is continuously heating to 85 DEG C of insulation reaction 1h, is cooled to room temperature Hou Jiashui
It is 0.8% to be diluted to solid content, obtains plant pulp stoste, plant pulp stoste is injected into type groove, after stirring 1s using air bubbling
Static 2s drainage and formations, after dehydration, obtain the wet formed body of fiber, and by the cold pressing sizing of fiber wet formed body, removing moisture is to containing
Water rate is 20%, then is transferred in hot press, and at 155 DEG C, hot-pressing drying handles 5min under 0.4MPa, obtains no glue middle-high density plant
Fiberboard.
Example 3
Crushed being added after dregs of beans natural air drying in pulverizer, cross 40 mesh sieves, the bean cake powder after sieving is placed on evaporation boiler,
2h is heat-treated under vapor atmosphere, controlled at 180 DEG C, dregs of beans must be pre-processed after being cooled to room temperature, by manioc waste natural wind
Add in pulverizer and crush after dry, cross 40 mesh sieves, the cassava ground-slag after sieving is placed on evaporation boiler, it is hot under vapor atmosphere
2h is handled, controlled at 200 DEG C, but to cassava ground-slag must be pre-processed after room temperature, takes 300g to pre-process dregs of beans, 300g pretreatments
Cassava ground-slag, adds in 15L deionized waters, is stirred at 40 DEG C with 400r/min and defibrination is transferred in fiberizer after 30min to kowtowing
Xie Du is 20 ° of SR, and is that 1% salt acid for adjusting pH is 4.5 with mass fraction, adds 0.6g potassium peroxydisulfates, is heated to 70 DEG C, after
Continuous stirring 60min, obtains pretreatment of fiber slurries, is that 5% sodium hydroxide solution adjusting pretreatment of fiber slurries pH is with mass fraction
10.0,6g boraxs are added, the insulation reaction 4h at 70 DEG C, is continuously heating to 90 DEG C of insulation reaction 2h, adds after being cooled to room temperature
It is 1.0% that water, which is diluted to solid content, obtains plant pulp stoste, plant pulp stoste is injected into type groove, utilizes air bubbling to stir 2s
Static 3s drainage and formations afterwards, after dehydration, obtain the wet formed body of fiber, and by the wet formed body cold pressing sizing of fiber, removing moisture is extremely
Moisture content is 30%, then is transferred in hot press, and at 160 DEG C, hot-pressing drying handles 6min under 0.5MPa, obtains no glue middle-high density and plants
Fibres plate.
Reference examples：The middle-high density vegetable fibre board of Anhui company production.
The middle-high density vegetable fibre board of example and reference examples is detected, specific detection is as follows：
Tensile strength：The middle-high density vegetable fibre board sample of preparation is after 24h water balances, according to standard ISO1924-2
Sampling, selects surfacing, and the sample having no mechanical damage is tested.
Stiffness properties：According to TAPPIT498cm-86 standards, material stiffness properties are carried out using TMI79-25 deflections instrument
Test.The bending length of test is 50mm, and angle of bend is 15 °.
Contact angle is tested：Using the surface contact angle of static contact angle analyzer test fibrous material, pass through contact angle
The hydrophobicity of measure characterization middle-high density plant fiber plate surface.
Specific testing result such as table 1.
1 performance characterization contrast table of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Elasticity modulus/GPa | 2.2 | 2.14 | 2.3 | 1.0 |
| Deflection/mN.m | 121.45 | 119.5 | 123.0 | 100.0 |
| Contact angle/° | 115.12 | 114.31 | 116.54 | 98.91 |
As shown in Table 1, the middle-high density vegetable fibre board for preparing of the present invention have preferable mechanical property, resistance bending property and
Water resistance.
Claims (8)
1. a kind of preparation method of no glue middle-high density vegetable fibre board, it is characterised in that specifically preparation process is：
（1）Dregs of beans drying and crushing is placed on evaporation boiler, 1~2h is heat-treated under vapor atmosphere, obtains pretreatment dregs of beans；
（2）Manioc waste drying and crushing is placed on evaporation boiler, 1~2h is heat-treated under vapor atmosphere, cassava must be pre-processed
Ground-slag；
（3）Take pretreatment dregs of beans, pretreatment cassava ground-slag to add mixing in deionized water and be transferred in fiberizer defibrination to beating degree
For 15~20 ° of SR, and it is that 1% salt acid for adjusting pH is 4.0~4.5 with mass fraction, adds potassium peroxydisulfate, be heated to 65~70
DEG C reaction 50~60min, obtain pretreatment of fiber slurries；
（4）It is that 5% sodium hydroxide solution adjusting pretreatment of fiber slurries pH is 9.0~10.0 with mass fraction, adds borax and add
Thermal response, and it is 0.5~1.0% to be diluted with water to solid content, obtains plant pulp stoste；
（5）Plant pulp stoste is injected into drainage and formation in type groove, obtains the wet formed body of fiber；
（6）By the wet formed body cold pressing sizing of fiber, removing moisture to moisture content is 10~30%, then is transferred to hot pressing in hot press and does
Dry processing, obtains no glue middle-high density vegetable fibre board.
A kind of 2. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（1）The heat treatment temperature is 160~180 DEG C.
A kind of 3. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（2）The heat treatment temperature is 180~200 DEG C.
A kind of 4. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（3）The pretreatment dregs of beans, the mass ratio of pretreatment cassava ground-slag are 1：1, the potassium peroxydisulfate dosage is pretreatment dregs of beans matter
The 0.1~0.3% of amount.
A kind of 5. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（4）The borax dosage is the 1~3% of pretreatment Soybean Meal.
A kind of 6. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（4）It is described heating reaction process be at 60~70 DEG C 3~4h of insulation reaction, be continuously heating to 80~90 DEG C of insulation reactions 1~
2h。
A kind of 7. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（5）The drainage and formation process is static 2~3s drainage and formations after 1~2s of air bubbling stirring.
A kind of 8. preparation method of no glue middle-high density vegetable fibre board as claimed in claim 1, it is characterised in that step
（6）The hot-pressing drying processing is at 150~160 DEG C, and hot-pressing drying handles 4~6min under 0.3~0.5MPa.
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| CN201711487452.7A CN107936305A (en) | 2017-12-30 | 2017-12-30 | A kind of preparation method of no glue middle-high density vegetable fibre board |
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| CN201711487452.7A CN107936305A (en) | 2017-12-30 | 2017-12-30 | A kind of preparation method of no glue middle-high density vegetable fibre board |
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ID=61937143
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319880A (en) * | 2022-07-06 | 2022-11-11 | 南京大学 | Artificial board and preparation method thereof |
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| WO2024007359A1 (en) * | 2022-07-06 | 2024-01-11 | 南京大学 | Artificial board and preparation method therefor |
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