CN106750521A - A kind of waste wool base biological plastics of high-flexibility and preparation method thereof - Google Patents
A kind of waste wool base biological plastics of high-flexibility and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
Waste wool base biological plastics the invention discloses a kind of high-flexibility and preparation method thereof, belongs to biological plastics technical field.The present invention retains the space in wool fiber using the dry method of snap frozen as much as possible, for next step wool powder provides good environment with merging for plasticizer, enable that ethylene glycol more enters inside wool fiber, improve disulfide bonds rate in wool keratin.Liquid-nitrogen freeze drying treatment effectively increases the pliability of wool base biological plastics, and wool base biological plastics has more preferable extensibility, and Young's modulus is smaller.Wool base biological plastics that the present invention is obtained is not only degradable and heat-insulated, sound insulation, electrical insulation capability are good, can be applied to the fields such as building, the interior decoration high to electric insulation, heat-insulated, sound isolation requirement.Meanwhile, angle protein biological plastics good biocompatibility is biodegradable, also the potentiality with bio-medical.
Description
Technical field
Waste wool base biological plastics the present invention relates to a kind of high-flexibility and preparation method thereof, belongs to biological plastics skill
Art field.
Background technology
As continuing to develop for society also constantly strengthens, is brought by petroleum-based plastics with progress, the environmental consciousness of people
The problems such as environmental pollution, sustainable development, receives the concern of more and more people.In recent years, with reproducible natural polymer material
Expect to be raw material, prepare degradable, recyclable organism plastics the extensive concern studied and receive researchers.Wool is used as natural
The representative of bioprotein material, the annual yield in the whole world is all very huge, along with because of technological requirement, equipment level, sheep
Species the problems such as the waste wool that produces it is also more and more, compared with by the discarded landfill of these resources, cause environmental pollution and money
Source is wasted, and they are fabricated into degradable biological plastics, and recycling can not only economize on resources while can also reduce
The pollution protection mankind's is healthy.
At present, waste wool has been applied in some fields, such as：(1) the short fibre of wool by length less than 13mm
Dimension is fabricated to nonwoven web using sewing and gluing method；(2) high temperature high pressure process is carried out to waste wool, then is aided with
Acid or aqueous slkali make its slight acidolysis or alkaline hydrolysis, the keratin powder for obtaining can be used for animal feed additive；(3) from waste wool
Middle extraction amino acid can be applied in fields such as medicine, food, industry, agriculturals；(4) extracted from the materials such as cow's milk, wool, chicken feather
Protein, it is compound to be made protein fibre；(5) natural polymer biomembrane is prepared.
After becoming powdered, physics and chemical form are all very different wool compared with wool fiber, research has shown that,
The conservation rate of wool powder foot couple moisture improves a lot compared with wool fiber, but moisture pick-up properties declines.The adsorptivity of wool powder
It is also very excellent with deodoriging properties.
People are broadly divided into two methods, Mechanical Method and chemistry-mechanically combining method to the preparation research of wool powder.Machine
Tool method includes cryogenic mechanical method, vacuum machine method again, and chemistry-mechanically combining method mainly includes ferment treatment method, dissolving-separate out
Method, oxidation-reduction method, inorganic metal salt facture etc..Processing wool powder its structure for obtaining by distinct methods has very very much not
Together, disulfide bond will not substantially be destroyed in the wool powder of Mechanical Method treatment, and the wool powder processed by chemical reagent
Disulfide bond part is destroyed or all destructions, and impalpable structure increases in wool powder.
Have been reported and discarded angle protein is prepared into by powder, Ran Houtian with the method that mechanical crushing is combined using hot water treatment
Plus safe and nontoxic plasticizer is prepared into biological plastics through hot pressing；Particular by high-temperature-hot-water treatment, heated-air drying, crushing,
Mix with plasticizer, prepared by secondary drying, hot-forming, cooling method.Its mechanical property and flexibility need
Strengthen.
The content of the invention
In order to solve the above problems, the waste wool base biological plastics and its system improved the invention provides a kind of pliability
Preparation Method.It is 3-5mm that the present invention first cuts wool fiber, then carries out hot-water pretreatment to wool fiber, makes fiber squama
Piece fully opens, intermolecular disulfide bonds, wool fiber is absorbed enough moisture content, and water absorption rate reaches 300~
500%, then the liquid nitrogen of -200 DEG C or so of use cool down rapidly, the wool angle protein fiber containing moisture content is quickly cooled down, then
Wool fiber is dried using the method for freeze-drying.In quick cooling procedure, moisture content flash freeze in wool fiber space,
Expansion, forms larger ice crystal and can change the tight structure of fiber.In freeze-drying process, due to the vaporization of ice crystal, wool is fine
Many larger spaces, fiber weakness increase are formed in dimension.In crushing process, wool fiber is not only broken in length direction,
Also can be broken in diametric(al), it is easy to be ground into the superfines that fineness scope can reach 0.5-2 μm.Superfines can be with increasing
The modeling full and uniform mixing of agent, is conducive between plasticizer molecule entering angle protein macromolecular, and the disulfide bond opened between macromolecular is handed over
Connection, is finally hot pressed into more flexible, transparent angle protein biological plastics.
The waste wool base biological plastics that pliability of the invention is improved, preparation method includes：(1) hot-water pretreatment：Will
By cutting short, during removal of impurities, clean waste wool fiber add the aqueous solution, 30~100min are processed in 120~135 DEG C；(2) it is cold
It is lyophilized dry：Liquid nitrogen is poured into, waterishlogged wool fiber quick freeze is allowed, 15~24h is then dried in freeze drier；(3)
Grind；(4) mix with plasticizer stirring, then place 8~12h；(5) redrying；(6) it is hot-forming；(7) cool down.
In one embodiment, it is 3~5mm that the step (1) cuts short wool fiber.
In one embodiment, the removal of impurities of the step (1), clean, be cleaned repeatedly with liquid detergent for several times, remove sheep
Hair surface grease.
In one embodiment, the aqueous solution of the step (1) is the buffer solution of pH=8；The compound method of buffer solution：
Taking 0.1mol/L Klorvess Liquids 500ml adds boric acid 3.09g to be allowed to dissolve, and measures 25ml boric acid-Klorvess Liquid and 4.0ml
0.1mol/L NaOH solutions uniformly mix, and are diluted with water to 200ml.
In one embodiment, the grinding for step (3) is crushed using nanon ball-mill, and it is content that mill is situated between
95%th, diameter 8mm, density 6.02g/cm3, Mohs' hardness 9 zirconia ball, drum speed be 400 revs/min, grinding 10~
20min, obtains the superfine wool powder that particle diameter is 0.5~2 μm.
In one embodiment, the plasticizer of the step (4) is any one in ethylene glycol, glycerine, propane diols.
In one embodiment, in the step (4), the consumption of plasticizer for wool powder dry weight 40%~
50%.
In one embodiment, stirring in the step (4), is to stir 12~18min in 600~800rpm.
In one embodiment, the redrying of the step (5), is dried in 75~85 DEG C of hot-air oven
2.5~4h.
In one embodiment, the step (6) hot pressing be 85~90Mpa of hot pressing pressure, hot pressing temperature 150~
7~14min of hot pressing at 165 DEG C.
In one embodiment, the cooling of the step (7) is normal temperature cooling.
Waste wool base biological plastics pliability prepared by the present invention is good, and its Young's modulus is decreased to below 160MPa,
And existing document report waste wool base biological plastics Young's modulus is more than 220MPa.Young's modulus is that reflection solid material is supported
The physical quantity of ability of anti-deformation, the smaller explanation sample of the value is more flexible.Meanwhile, its fracture strength reaches 9MPa or so, fracture and stretches
Rate long reaches more than 35%, with good mechanical property.
The fields such as waste wool base biological plastics of the present invention can be used to building, interior decoration, packaging material.
Advantages of the present invention and effect：
The present invention retains the space in wool fiber using the method for freeze-drying as much as possible, is next step wool powder
With merging there is provided good environment for plasticizer so that ethylene glycol can more enter wool fiber macromolecule internal, carry
The fracture rate of disulfide bond in wool keratin high.Liquid-nitrogen freeze drying treatment effectively increases the flexible of wool base biological plastics
Property, wool base biological plastics has more preferable extensibility, and Young's modulus is smaller.
The biological plastics that the present invention is obtained is not only degradable, and heat-insulated, sound insulation, electrical insulation capability are good, and it is right to can be applied to
The fields such as electric insulation, heat-insulated, sound isolation requirement building, interior decoration high.Meanwhile, angle protein biological plastics good biocompatibility can
Biodegradation, the also potentiality with bio-medical.
Brief description of the drawings
Fig. 1 is influence of the liquid-nitrogen freeze drying to wool base biological plastics pattern；Wherein (a) untreated argali wool fibre
SEM electron-microscope scanning figures, (b) wool fiber SEM electron-microscope scanning figures after hot-water pretreatment, liquid-nitrogen freeze drying；
The surface microphotograph of the wool base biological plastics that Fig. 2 is obtained for the different drying means of embodiment 1-2；Wherein
(a) liquid-nitrogen freeze drying；(b) forced air drying；
The rupture cross section SEM ESEMs of the wool base biological plastics that Fig. 3 is obtained for the different drying means of embodiment 1-2
Figure；Wherein (a) liquid-nitrogen freeze drying；(b) forced air drying.
Specific embodiment
(1) pattern test
Wool base life after being placed 3 days by the wool base biological plastics of different preparation methods preparation and in climatic chamber
Thing plastics freeze 5min in being put into liquid nitrogen, break disconnected after taking-up rapidly；After untreated wool fiber and freeze-dried treatment
Wool fiber tidy, cut off with blade；By ready six samples with it is special it is two-sided be glued on sample stage, table
Face metal spraying.The plane of disruption of material is shot using HITACHI SU1510 types SEM (SEM), scanning voltage
It is 5KV, the multiplication factor of fiber is 500 times and 5000 times, the shooting multiple of biological plastics section is 500 times.By two kinds for the treatment of
The wool powder and biological plastics that method is obtained are placed on slide, and covered is put into C-SHG1Nikon light microscopes
Lower observation, is similarly also put into basis of microscopic observation, to material by the wool base biological plastics placed three days in climatic chamber
Surface carry out morphology analysis, the multiplication factor of powder is 200 times, and the multiplication factor of biological plastics is 400 times.
(2) SEM (SEM) test
Scanning electron micromirror duty principle：The operation principle of SEM is with a branch of superfine electron beam scanning sample, in sample
Surface excitation goes out secondary electron, and the number of secondary electron is relevant with electron beam incident angle, that is to say, that the surface texture with sample
Relevant, secondary electron is collected by detection body, and by scintillator is changed into optical signal there, then through photomultiplier and amplifier
It is changed into electric signal to control the intensity of electron beam on fluorescent screen, shows the scan image synchronous with electron beam.Image is vertical
The bodily form is as reflecting the surface texture of sample.In order that sample surface emitting goes out secondary electron, sample, after fixation, dehydration
Spraying last layer heavy metal particle, heavy metal sends secondary electron signal under the bombardment of electron beam.
Experimentation：Wool powder and the wool by bio plastics two-sided tape for preparing carefully are adhered on sample stage,
SU1510 type SEM is used in sample surfaces spraying plating golden film, voltage is 5KV, observed under different amplification
Sample.
(3) Mechanics Performance Testing
The wool base biological plastics tensile property of different disposal method is tested from TST3826E stress-strain tests instrument.Examination
Control gauge 97 × 20mm of lattice, clamp distance 50mm, draw speed 50mm/min.From HD026NS electronic fabric strength testers, Nantong is grand
The fracture strength and elongation at break of big experiment Instrument Ltd. test wool base biological plastics.97 × 20mm of size of sample,
Test gauge 30mm, draw speed 100mm/min.
From the thickness of YG141D type fabric thickness instrument test samples, five data of every sample test try to achieve average value.
HD026NS electronic fabric strength tester principles are sensor pull spring resistance value is changed the change of fiber power by sensor,
Make to produce curent change on circuit, the Current Voltage of change is sent to current detection section, magnitude of voltage is finally decoded into strength
Size is displayed on panel.It is suffered when with highly sensitive sensor, fiber is stretched by the electric method for transformation of non electrical quantity
Power changes into electric signal, directly by the fracture load value of numeral method fiber after amplified and analog-to-digital conversion.The stretching of fiber
Rotated using stepper motor and be input into, the clock signal of stepper motor is produced by microprocessor, stepping electricity is promoted after power amplification
Machine is operated, while the umber of pulse of microprocessor record input stepper motor carries out scale conversion and data processing, display fracture is stretched
Long value.
Operating procedure：Start preheating enters main menu after 30 minutes, and arrange parameter is as follows：Test gauge 50mm, stretching speed
Degree 20mm/min.Clamp sample and start test, strength and elongation values are recorded after fibrous fracture.
(4) moisture-proof stability test
The wool base biological plastics of preparation is placed in water, test respectively wool base biological plastics place 1h, 4h, 6h,
Weight change after 24h.And the fracture strength and extension at break of various samples are tested from YG026C types imported electronic fabric strength tester.
Here is that the present invention is specifically described.
Embodiment 1
Wool base biological plastics is prepared as follows：
(1) it is 3-5mm to cut short wool fiber, is put into hot water, adds liquid detergent to clean repeatedly for several times, removes wool table
Face grease；Clean wool is put into the buffer solution of the pH=8 for preparing in advance, and bath raio is 1:30, in OPS-40IS vertical pressures
Hot-water pretreatment is carried out in power steam sterilizer, pretreatment condition is：130 DEG C of temperature, time 40min；By pretreated sheep
Hair is cleaned to neutrality repeatedly；
The compound method of buffer solution：Taking 0.1mol/L Klorvess Liquids 500ml adds boric acid 3.09g to be allowed to dissolve, and measures
25ml boric acid-Klorvess Liquid and 4.0ml, 0.1mol/L NaOH solution uniformly mix, and are diluted with water to 200ml.
(2) liquid nitrogen is poured into, waterishlogged wool fiber quick freeze is allowed, 24h is then dried in freeze drier.
(3) crushed using nanon ball-mill, it is content 95%, diameter 8mm, density 6.02g/cm that mill is situated between3, Mohs it is hard
The zirconia ball of degree 9, drum speed is 400 revs/min, grinds 10min, obtains the superfine wool powder that particle diameter is 0.5~2 μm.
(4) the wool powder that will be ground is put into beaker, adds plasticizer ethylene glycol, and the consumption of ethylene glycol is wool powder
The 45% of dry weight；15min is stirred using S212 constant speed stirrers, plasticizer and wool powder is mixed, mixing speed is
800r/min；Sealed beaker, 10h is stood under normal temperature condition.
(5) it is put into air dry oven and dries 3h, drying temperature is 80 DEG C.
(6) dried powder is laid on mould, density is 0.1g/cm, using the hot presses of CARVER 4128 in temperature
It is hot pressing 10min under conditions of 160 DEG C, pressure 87MPa to spend.
(7) treat that hot pressing is completed, cooled down in normal temperature environment.
Analyze the performance impact of the liquid-nitrogen freeze drying to wool base biological plastics of embodiment 1.
As shown in figure 1, the influence for liquid-nitrogen freeze drying to wool base biological plastics pattern.As shown in Fig. 1 (a), without
The raw wool fiber surface scale of any treatment is a lot, and fiber is thinner, has many spaces inside the visible wool of section electron microscope.Such as
Shown in Fig. 1 (b), the wool fiber average diameter processed by hot-water pretreatment and liquid-nitrogen freeze drying is thicker, in cross section
Space is intact to be preserved, and pore size and no significant difference, and this explanation can keep through the wool that liquid nitrogen frozen is processed
The original gap structure of cell, this provides good environment for next step wool powder with merging for plasticizer so that ethylene glycol
Can more enter inside wool fiber, improve disulfide bonds rate in wool keratin.
Embodiment 2
Wool base biological plastics is prepared as follows：
(1) it is 4mm or so to cut short wool fiber, is put into hot water, adds liquid detergent to clean repeatedly for several times, removes wool
Surface grease；Clean wool is put into the buffer solution of the pH=8 for preparing in advance, and bath raio is 1:30, it is vertical in OPS-40IS
Hot-water pretreatment is carried out in pressure steam sterilizer, pretreatment condition is：120 DEG C of temperature, time 50min；Will be pretreated
Wool is cleaned repeatedly；
The compound method of buffer solution：Taking 0.1mol/L Klorvess Liquids 500ml adds boric acid 3.09g to be allowed to dissolve, and measures
25ml boric acid-Klorvess Liquid and 4.0ml, 0.1mol/L NaOH solution uniformly mix, and are diluted with water to 200ml.
(2) wool is shredded, pours into liquid nitrogen, allow waterishlogged wool fiber quick freeze, then in freeze drier
Dry 16h.
(3) crushed using nanon ball-mill, it is content 95%, diameter 8mm, density 6.02g/cm that mill is situated between3, Mohs it is hard
The zirconia ball of degree 9, drum speed is 400 revs/min, grinds 15min, obtains the superfine wool powder that particle diameter is 0.5~2 μm.
(4) the wool powder that will be ground is put into beaker, adds plasticizer ethylene glycol, and the consumption of ethylene glycol is wool powder
The 40% of last dry weight；15min is stirred using S212 constant speed stirrers, is mixed plasticizer and wool powder, mixing speed
It is 800r/min；Sealed beaker, 10h is stood under normal temperature condition.
(5) it is put into air dry oven and dries 3h, drying temperature is 80 DEG C.
(6) dried powder is laid on mould, density is 0.1g/cm, using the hot presses of CARVER 4128 in temperature
It is hot pressing 7min under conditions of 165 DEG C, pressure 85MPa to spend.
(7) treat that hot pressing is completed, cooled down in normal temperature environment.
The wool base biological plastics obtained by the present embodiment method, fracture strength is 8.92MPa, elongation at break is
36.32%th, work to break is 0.148J, and Young's modulus is 159.34MPa.
Embodiment 3
Wool base biological plastics is prepared as follows：
(1) it is 4mm or so to cut short wool fiber, is put into hot water, adds liquid detergent to clean repeatedly for several times, removes wool
Surface grease；Clean wool is put into the buffer solution of the pH=8 for preparing in advance, and bath raio is 1:30, it is vertical in OPS-40IS
Hot-water pretreatment is carried out in pressure steam sterilizer, pretreatment condition is：135 DEG C of temperature, time 30min；Will be pretreated
Wool is cleaned repeatedly；
The compound method of buffer solution：Taking 0.1mol/L Klorvess Liquids 500ml adds boric acid 3.09g to be allowed to dissolve, and measures
25ml boric acid-Klorvess Liquid and 4.0ml, 0.1mol/L NaOH solution uniformly mix, and are diluted with water to 200ml.
(2) wool is shredded, pours into liquid nitrogen, allow waterishlogged wool fiber quick freeze, then in freeze drier
Dry 20h.
(3) crushed using nanon ball-mill, it is content 95%, diameter 8mm, density 6.02g/cm that mill is situated between3, Mohs it is hard
The zirconia ball of degree 9, drum speed is 400 revs/min, grinds 20min, obtains the superfine wool powder that particle diameter is 0.5~2 μm.
(4) the wool powder that will be ground is put into beaker, adds plasticizer ethylene glycol, and the consumption of ethylene glycol is wool powder
The 50% of last dry weight；15min is stirred using S212 constant speed stirrers, is mixed plasticizer and wool powder, mixing speed
It is 800r/min；Sealed beaker, 10h is stood under normal temperature condition.
(5) it is put into air dry oven and dries 3h, drying temperature is 80 DEG C.
(6) dried powder is laid on mould, density is 0.1g/cm, using the hot presses of CARVER 4128 in temperature
It is hot pressing 14min under conditions of 150 DEG C, pressure 90MPa to spend.
(7) treat that hot pressing is completed, cooled down in normal temperature environment.
The wool base biological plastics obtained by the present embodiment method, fracture strength is 8.93Mpa, elongation at break is
36.38%th, work to break is 0.149J, and Young's modulus is 157.62MPa.
Embodiment 4
Plasticizer in embodiment 1 is adjusted to glycerine, other steps or parameter are consistent with embodiment 1.
The wool base biological plastics obtained by the present embodiment method, fracture strength is 8.75MPa, elongation at break is
34.38%th, work to break is 0.138J, and Young's modulus is 198.77MPa.
Embodiment 5
Plasticizer in embodiment 1 is adjusted to propane diols, other steps or parameter are consistent with embodiment 1.
The wool base biological plastics obtained by the present embodiment method, fracture strength is 8.76Mpa, elongation at break is
33.83%th, work to break is 0.142J, and Young's modulus is 140.5MPa.
Reference examples 1
The liquid-nitrogen freeze drying of step (2) in embodiment 1 is revised as：Wool after heat treatment is drained away the water, is placed in
Temperature is forced air drying in 80 DEG C of hot-air ovens.Other steps are consistent with embodiment 1.
Compare the performance shadow of the liquid-nitrogen freeze drying of embodiment 1, the heated-air drying of reference examples 1 to wool base biological plastics
Ring.
In wool base biological plastics its microstructure processed through liquid-nitrogen freeze drying shown in Fig. 2, powder and powder
Between connection it is tightr, the forced air drying wool base biological plastics that obtains for the treatment of has obviously between fiber and fiber
Gap.The wool base biological plastics section that Fig. 3 shows is more smooth, and internal interface is more obscured, and mouldability is more preferable.Because
Liquid nitrogen snap frozen, the wool powder voids of vacuum freeze-drying dried process retain very well, and ethylene glycol plasticizer can be quick
Penetrate into polymer chain, destroy the disulfide bond crosslinking between keratin macromolecular；Meanwhile, molecular weight glycol very little, easily
Original hydrogen bond is broken in making polypeptide chain, and the disulfide bond that polymer chain is formed between new hydrogen bond, wool keratin is fully broken water
Solution.
Table 1 is that the wool base that embodiment 1 is processed using liquid-nitrogen freeze drying, the forced air drying treatment of reference examples 1 is obtained is given birth to
The mechanical experimental results of thing plastics.
The different disposal method of table 1 prepares wool base biological plastics Mechanics Performance Testing
| Processing method | Fracture strength | Elongation at break | Work to break |
| Liquid-nitrogen freeze drying treatment | 8.98MPa | 36.55% | 0.15J |
| Forced air drying is processed | 7.25MPa | 22.48% | 0.12J |
As shown in Table 1, liquid-nitrogen freeze drying treatment can effectively improve the pliability of wool base biological plastics, while can also
Strengthen the strength of biological plastics, because wool powder prepared by chilled treatment, when the ethylene glycol of same amount is added, can
Become apparent from the plasticization effect of ethylene glycol, part is more filled in treatment of the plasticizer to protein, ethylene glycol divides greatly into wool keratin
There is substantial amounts of hydroxyl in son, in ethylene glycol, launch the strand of protein, disconnect original hydrogen bond in protein molecule, with
They form new hydrogen bond, increase the distance of polypeptide interchain, and this causes that intermolecular sliding is easier, therefore gives birth to wool base
Thing plastics have more preferable extensibility.
Liquid-nitrogen freeze drying treatment wool base biological plastics stress-strain diagram, forced air drying treatment wool are analyzed respectively
Base biological plastics stress-strain diagram, as a result shows, the Young's modulus of the wool base biological plastics processed by liquid nitrogen frozen is
158.86MPa, and the Young's modulus of the wool base biological plastics of forced air drying treatment is 240.91MPa.Young's modulus is reflection
Solid material resists the physical quantity of deformability, and his bigger explanation sample of value is more not susceptible to deformation, this also illustrates through liquid
The wool base biological plastics pliability of chilled nitrogen dried process is more preferable.
Additionally, when the wool base biological plastics that embodiment 1 is obtained is preserved under sealed conditions, quality is very soft, soft
Toughness, transparency are splendid, and surfacing is not tilted and can rotated two weeks around central shaft.
Although the present invention is disclosed as above with preferred embodiment, it is not limited to the present invention, any to be familiar with this skill
The people of art, without departing from the spirit and scope of the present invention, can do various changes with modification, therefore protection model of the invention
Enclose being defined of being defined by claims.
Claims (10)
1. the waste wool base biological plastics preparation method that a kind of pliability is improved, it is characterised in that the preparation method includes：
(1) hot-water pretreatment：Will be by cutting short, during removal of impurities, clean waste wool fiber add the aqueous solution, in 120~135 DEG C for the treatment of
30~100min；(2) freeze-drying：Liquid nitrogen is poured into, waterishlogged wool fiber quick freeze is allowed, then in freeze drier
Dry 15~24h；(3) grind；(4) mix with plasticizer stirring, then place 8-12h；(5) redrying；(6) it is hot pressed into
Type；(7) cool down.
2. method according to claim 1, it is characterised in that it is 3-5mm that the step (1) cuts short wool fiber.
3. method according to claim 1, it is characterised in that the grinding for step (3) is entered using nanon ball-mill
Row is crushed, and it is content 95%, diameter 8mm, density 6.02g/cm that mill is situated between3, Mohs' hardness 9 zirconia ball, drum speed is 400
Rev/min, 10~20min is ground, obtain the superfine wool powder that particle diameter is 0.5~2 μm.
4. method according to claim 1, it is characterised in that in the step (4), the consumption of plasticizer is wool powder
The 40%~50% of dry weight.
5. method according to claim 1, it is characterised in that the step (6) hot pressing be hot pressing pressure 85~
7~14min of hot pressing at 90MPa, 150~165 DEG C of hot pressing temperature.
6. method according to claim 1, it is characterised in that the plasticizer of the step (4) is ethylene glycol, glycerine, third
Any one in glycol.
7. method according to claim 1, it is characterised in that the aqueous solution of the step (1) is the buffer solution of pH=8.
8. method according to claim 1, it is characterised in that the removal of impurities of the step (1), clean, is anti-with liquid detergent
Multiple cleaning for several times, removes wool surfaces grease.
9. the wool base biological plastics for being obtained according to any methods described of claim 1~8.
10. the application of the wool base biological plastics described in claim 9.
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| CN110144760A (en) * | 2019-05-21 | 2019-08-20 | 江南大学 | A kind of preparation method of low cost heat-insulating sound-insulating waste wool/PVA extrusion coating paper |
| CN110496694A (en) * | 2019-08-30 | 2019-11-26 | 大连工业大学 | A kind of waste wool fiber dust and its preparation method and application |
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| CN109608835B (en) * | 2018-12-06 | 2020-11-13 | 江南大学 | Preparation method of graft-modified wool keratin-toughened PBS (Poly Butylene succinate) bio-based composite material |
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| CN110496694A (en) * | 2019-08-30 | 2019-11-26 | 大连工业大学 | A kind of waste wool fiber dust and its preparation method and application |
| CN110496694B (en) * | 2019-08-30 | 2021-07-09 | 大连工业大学 | Waste wool fiber powder and preparation method and application thereof |
| CN113896917A (en) * | 2021-09-30 | 2022-01-07 | 闽江学院 | Preparation method of high-toughness high-wet-strength keratin bioplastic, product and application thereof |
| CN113896917B (en) * | 2021-09-30 | 2023-12-01 | 闽江学院 | Preparation method of high-toughness high-wet-strength keratin bioplastic, and product and application thereof |
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