CN106750521B - 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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Abstract
The invention discloses waste wool base biological plastics of a kind of high-flexibility and preparation method thereof, belong to biological plastics technical field.The present invention retains the gap in wool fiber using dry method is rapidly frozen as much as possible, good environment is provided with merging for plasticizer for next step wool powder, ethylene glycol is more entered inside wool fiber, disulfide bonds rate in wool keratin is improved.Liquid-nitrogen freeze drying processing effectively increases the flexibility of wool base biological plastics, and wool base biological plastics has better extensibility, and Young's modulus is smaller.The wool base biological plastics that the present invention obtains is not only degradable but also heat-insulated, sound insulation, electrical insulation capability are good, can be applied to the fields such as electrical isolation, building heat-insulated, sound isolation requirement is high, interior decoration.Meanwhile angle protein biological plastics good biocompatibility, it is biodegradable, also with the potentiality of bio-medical.
Description
Technical field
The present invention relates to waste wool base biological plastics of a kind of high-flexibility and preparation method thereof, belong to biological plastics skill
Art field.
Background technique
With the continuous development of society with progress, the environmental consciousness of people also constantly enhances, by petroleum-based plastics bring
The problems such as environmental pollution, sustainable development, receives the concern of more and more people.In recent years, with reproducible natural polymer material
Material is raw material, prepares degradable, recyclable organism plastics research and receives the extensive concern of researchers.Wool is as natural
The representative of bioprotein material, the annual yield in the whole world is all very huge, along with because of technique requirement, equipment level, sheep
Type the problems such as the waste wool that generates it is also more and more, compared with by the discarded landfill of these resources, cause environmental pollution and money
They are fabricated to degradable biological plastics, resource utilization can not only economize on resources while can also reduce by source waste
The health of the pollution protection mankind.
Currently, waste wool has been applied in some fields, and such as: length (1) is less than to the short fibre of wool of 13mm
Dimension is fabricated to nonwoven web using the method for sewing and gluing；(2) high temperature high pressure process is carried out to waste wool, then be aided with
Acid or aqueous slkali make its slight acidolysis or alkaline hydrolysis, and obtained keratin powder 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) it is extracted from the substances such as cow's milk, wool, chicken feather
Protein is combined 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 enzymatic treatment method, dissolution-precipitation
Method, oxidation-reduction method, inorganic metal salt facture etc..Its structure of the wool powder handled by distinct methods has very very much not
Together, disulfide bond will not be substantially destroyed in the wool powder of Mechanical Method processing, and pass through the wool powder of chemical reagent processing
Disulfide bond part is destroyed or is all destroyed, and amorphous structure increases in wool powder.
It has been reported and discarded angle protein is prepared into the method that mechanical crushing combines by powder using hot water treatment, then add
Safe and nontoxic plasticizer is added to be prepared into biological plastics through hot pressing；Particular by high-temperature-hot-water processing, heated-air drying, crushing,
It is mixed with plasticizer, prepared by secondary drying, hot-forming, cooling method.Its mechanical property and flexibility need
Reinforce.
Summary of the invention
To solve the above-mentioned problems, the present invention provides the waste wool base biological plastics and its system of a kind of raising of flexibility
Preparation Method.The present invention, which first cuts wool fiber, makes fiber squama then to wool fiber progress hot-water pretreatment for 3-5mm
Piece sufficiently opens, intermolecular disulfide bonds, and wool fiber is made to can be absorbed enough moisture content, and water absorption rate reaches 300~
500%, then -200 DEG C of use or so of liquid nitrogen cools down rapidly, is quickly cooled down the wool angle protein fiber containing moisture content, then
Using the dry wool fiber of the method for freeze-drying.During rapid cooling, moisture content flash freeze in wool fiber gap,
Expansion forms the tight structure of biggish ice crystal and changeable fiber.In freeze-drying process, due to the vaporization of ice crystal, wool is fine
Many biggish gaps are formed in dimension, fiber weakness increases.In crushing process, wool fiber is not only broken in length direction,
Also it can be broken in diametrical direction, being easy to be ground into fineness range can reach 0.5-2 μm of superfines.Superfines can be with increasing
The full and uniform mixing of agent is moulded, is conducive between plasticizer molecule entering angle protein macromolecular, 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 flexibility of the invention improves, preparation method includes: (1) hot-water pretreatment: will
It is added in aqueous solution by the waste wool fiber cut short, cleaned, clean, in 120~135 DEG C of 30~100min of processing；(2) cold
Be lyophilized dry: pouring into liquid nitrogen, allow waterishlogged wool fiber quick freeze, then dry 15 in freeze drier~for 24 hours；(3)
It grinds；(4) it is stirred with plasticizer, then places 8~12h；(5) redrying；(6) hot-forming；(7) cooling.
In one embodiment, the step (1) cuts short wool fiber for 3~5mm.
In one embodiment, the removal of impurities of the step (1), clean, be cleaned repeatedly with dish washing liquid for several times, remove sheep
Hair surface grease.
In one embodiment, the aqueous solution of the step (1) is the buffer of pH=8；The preparation method of buffer:
It takes 0.1mol/L Klorvess Liquid 500ml that boric acid 3.09g is added to be allowed to dissolve, measures 25ml boric acid-Klorvess Liquid and 4.0ml
0.1mol/L NaOH solution uniformly mixes, and is diluted with water to 200ml.
In one embodiment, grinding for the step (3) is crushed using nanon ball-mill, and it is content that mill, which is situated between,
95%, 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 partial size is 0.5~2 μm.
In one embodiment, the plasticizer of the step (4) is ethylene glycol, glycerol, any one in propylene glycol.
In one embodiment, in the step (4), the dosage of plasticizer be 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 dry in 75~85 DEG C of hot-air oven
2.5~4h.
In one embodiment, 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 room temperature cooling.
Waste wool base biological plastics flexibility prepared by the present invention is good, Young's modulus be decreased to 160MPa hereinafter,
And existing literature report waste wool base biological plastics Young's modulus is 220MPa or more.Young's modulus is that reflection solid material supports
The physical quantity of ability of anti-deformation, the value is smaller to illustrate that sample is more flexible.Meanwhile breaking strength reaches 9MPa or so, fracture is stretched
Long rate reaches 35% or more, has good mechanical property.
The fields such as waste wool base biological plastics of the present invention can be used for building, interior decoration, packaging material.
Advantages of the present invention and effect:
The present invention retains the gap in wool fiber using the method for freeze-drying as much as possible, is next step wool powder
Good environment is provided with merging for plasticizer, enables ethylene glycol more to enter wool fiber macromolecule internal, mentions
The fracture rate of disulfide bond in high wool keratin.Liquid-nitrogen freeze drying processing effectively increases the flexible of wool base biological plastics
Property, wool base biological plastics has better extensibility, and Young's modulus is smaller.
The biological plastics that the present invention obtains is not only degradable, but also heat-insulated, sound insulation, electrical insulation capability are good, can be applied to pair
The fields such as electrical isolation, building heat-insulated, sound isolation requirement is high, interior decoration.Meanwhile angle protein biological plastics good biocompatibility, it can
Biodegrade, also with the potentiality of bio-medical.
Detailed description of the invention
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 figure, (b) the wool fiber SEM electron-microscope scanning figure after hot-water pretreatment, liquid-nitrogen freeze drying；
Fig. 2 is the surface microscope photo for the wool base biological plastics that the different drying means of embodiment 1-2 obtain；Wherein
(a) liquid-nitrogen freeze drying；(b) forced air drying；
Fig. 3 is the rupture cross section SEM scanning electron microscope for the wool base biological plastics that the different drying means of embodiment 1-2 obtain
Figure；Wherein (a) liquid-nitrogen freeze drying；(b) forced air drying.
Specific embodiment
(1) pattern test
Wool base biological plastics prepared by different preparation methods and wool base after placing 3 days in climatic chamber are raw
Object plastics, which are put into liquid nitrogen, freezes 5min, breaks rapidly after taking-up disconnected；After untreated wool fiber and freeze-dried processing
Wool fiber tidy, cut off with blade；By ready six samples with it is dedicated it is two-sided be glued on sample stage, table
Face metal spraying.The plane of disruption of material is shot using HITACHI SU1510 type scanning electron microscope (SEM), scanning voltage
For 5KV, the amplification factor of fiber is 500 times and 5000 times, and the shooting multiple of biological plastics section is 500 times.Two kinds are handled
The wool powder and biological plastics that method obtains are placed on glass slide, and covered is put into C-SHG1Nikon optical microscopy
The wool base biological plastics placed three days in climatic chamber is similarly also put into microscopically observation, to material by lower observation
Surface carry out morphology analysis, the amplification factor of powder is 200 times, and the amplification factor of biological plastics is 400 times.
(2) scanning electron microscope (SEM) is tested
Scanning electron micromirror duty principle: the working principle of SEM is with a branch of superfine electronics beam scanning sample, in sample
Surface excitation goes out secondary electron, and the number of secondary electron is related with electron beam incident angle, that is to say, that the surface texture with sample
Related, secondary electron is collected by detection body, and is changed into optical signal by scintillator there, then through photomultiplier tube 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 to make sample surface emitting go out secondary electron, sample is wanted after fixation, dehydration
One layer of heavy metal particle is sprayed, heavy metal issues secondary electron signal under the bombardment of electron beam.
Experimentation: wool powder and the wool by bio plastics prepared are carefully adhered on sample stage with double faced adhesive tape,
SU1510 type scanning electron microscope is used in sample surfaces spraying plating golden film, voltage 5KV is observed under different amplification
Sample.
(3) Mechanics Performance Testing
Select the wool base biological plastics tensile property of TST3826E stress-strain test instrument test different disposal method.Examination
Control gauge 97 × 20mm of lattice, clamp distance 50mm, tensile speed 50mm/min.HD026NS electronic fabric strength tester is selected, Nantong is macro
The breaking strength and elongation at break of big experiment Instrument Ltd. test wool base biological plastics.97 × 20mm of size of sample,
Test gauge 30mm, tensile speed 100mm/min.
The thickness of YG141D type fabric thickness instrument test sample is selected, five data of every sample test acquire average value.
HD026NS electronic fabric strength tester principle is so that sensor pull spring resistance value is changed the variation of fiber power by sensor,
Make to generate curent change on circuit, the Current Voltage of variation is sent to current detection section, voltage value is finally decoded into strength
Size is shown on panel.It is suffered when being stretched fiber with highly sensitive sensor by the electrotransformation method of non electrical quantity
Power is converted to electric signal, directly by the fracture load value of numeral method fiber after amplification and analog-to-digital conversion.The stretching of fiber
It is rotated and is inputted using stepper motor, the clock signal of stepper motor is generated by microprocessor, and stepping electricity is pushed after power amplification
Machine operating, 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: booting preheating enters main menu after 30 minutes, and setting parameter is as follows: test gauge 50mm stretches speed
Spend 20mm/min.It clamps sample to start to test, record strength and elongation values 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 for 24 hours.And YG026C type imported electronic fabric strength tester is selected to test the breaking strength and extension at break of various samples.
Here is that the present invention is specifically described.
Embodiment 1
Wool base biological plastics is prepared as follows:
(1) wool fiber is cut short as 3-5mm, is put into hot water, dish washing liquid is added and cleans repeatedly for several times, removes wool table
Face grease；Clean wool is put into the buffer of pre-prepared pH=8, bath raio 1:30, in OPS-40IS vertical pressure
Hot-water pretreatment, pretreatment condition are carried out in power steam sterilizer are as follows: 130 DEG C of temperature, time 40min；By pretreated sheep
Hair is cleaned repeatedly to neutrality；
The preparation method of buffer: it takes 0.1mol/L Klorvess Liquid 500ml that boric acid 3.09g is added and is allowed to dissolve, measure
25ml boric acid-Klorvess Liquid and 4.0ml, 0.1mol/L NaOH solution uniformly mix, and are diluted with water to 200ml.
(2) pour into liquid nitrogen, allow waterishlogged wool fiber quick freeze, then in freeze drier it is dry for 24 hours.
(3) it is crushed using nanon ball-mill, it is content 95%, diameter 8mm, density 6.02g/cm that mill, which is situated between,3, Mohs it is hard
The zirconia ball of degree 9, drum speed are 400 revs/min, grind 10min, obtain the superfine wool powder that partial size is 0.5~2 μm.
(4) the wool powder ground is put into beaker, plasticizer ethylene glycol is added, the dosage of ethylene glycol is wool powder
The 45% of dry weight；15min is stirred using S212 constant speed stirrer, is mixed plasticizer and wool powder, mixing speed is
800r/min；Sealed beaker stands 10h under normal temperature conditions.
(5) dry 3h is put into air dry oven, and drying temperature is 80 DEG C.
(6) dried powder is laid on mold, density 0.1g/cm, using 4128 hot press of CARVER in temperature
It spends for hot pressing 10min under conditions of 160 DEG C, pressure 87MPa.
(7) it is completed to hot pressing, it is cooling in normal temperature environment.
The liquid-nitrogen freeze drying for analyzing embodiment 1 influences the performance of wool base biological plastics.
As shown in Figure 1, being influence of the liquid-nitrogen freeze drying to wool base biological plastics pattern.As shown in Fig. 1 (a), without
There are many raw wool fiber surface scale of any processing, and fiber is thinner, and there are many gaps inside the visible wool of section electron microscope.Such as
Shown in Fig. 1 (b), the wool fiber average diameter handled by hot-water pretreatment and liquid-nitrogen freeze drying is thicker, in cross section
Gap is intact to be preserved, and pore size and no significant difference, and the wool that this explanation is handled through liquid nitrogen frozen is able to maintain
The original gap structure of cell, this provides good environment with merging for plasticizer for next step wool powder, so that ethylene glycol
It can more enter inside wool fiber, improve disulfide bonds rate in wool keratin.
Embodiment 2
Wool base biological plastics is prepared as follows:
(1) wool fiber is cut short as 4mm or so, is put into hot water, dish washing liquid is added and cleans repeatedly for several times, removes wool
Surface grease；Clean wool is put into the buffer of pre-prepared pH=8, bath raio 1:30, vertical in OPS-40IS
Hot-water pretreatment, pretreatment condition are carried out in pressure steam sterilizer are as follows: 120 DEG C of temperature, time 50min；It will be pretreated
Wool cleans repeatedly；
The preparation method of buffer: it takes 0.1mol/L Klorvess Liquid 500ml that boric acid 3.09g is added and is allowed to dissolve, measure
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) it is crushed using nanon ball-mill, it is content 95%, diameter 8mm, density 6.02g/cm that mill, which is situated between,3, Mohs it is hard
The zirconia ball of degree 9, drum speed are 400 revs/min, grind 15min, obtain the superfine wool powder that partial size is 0.5~2 μm.
(4) the wool powder ground is put into beaker, plasticizer ethylene glycol is added, the dosage of ethylene glycol is wool powder
The 40% of last dry weight；15min is stirred using S212 constant speed stirrer, is mixed plasticizer and wool powder, mixing speed
For 800r/min；Sealed beaker stands 10h under normal temperature conditions.
(5) dry 3h is put into air dry oven, and drying temperature is 80 DEG C.
(6) dried powder is laid on mold, density 0.1g/cm, using 4128 hot press of CARVER in temperature
It spends for hot pressing 7min under conditions of 165 DEG C, pressure 85MPa.
(7) it is completed to hot pressing, it is cooling in normal temperature environment.
The wool base biological plastics obtained by the present embodiment method, breaking strength 8.92MPa, elongation at break are
36.32%, work to break 0.148J, Young's modulus 159.34MPa.
Embodiment 3
Wool base biological plastics is prepared as follows:
(1) wool fiber is cut short as 4mm or so, is put into hot water, dish washing liquid is added and cleans repeatedly for several times, removes wool
Surface grease；Clean wool is put into the buffer of pre-prepared pH=8, bath raio 1:30, vertical in OPS-40IS
Hot-water pretreatment, pretreatment condition are carried out in pressure steam sterilizer are as follows: 135 DEG C of temperature, time 30min；It will be pretreated
Wool cleans repeatedly；
The preparation method of buffer: it takes 0.1mol/L Klorvess Liquid 500ml that boric acid 3.09g is added and is allowed to dissolve, measure
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) it is crushed using nanon ball-mill, it is content 95%, diameter 8mm, density 6.02g/cm that mill, which is situated between,3, Mohs it is hard
The zirconia ball of degree 9, drum speed are 400 revs/min, grind 20min, obtain the superfine wool powder that partial size is 0.5~2 μm.
(4) the wool powder ground is put into beaker, plasticizer ethylene glycol is added, the dosage of ethylene glycol is wool powder
The 50% of last dry weight；15min is stirred using S212 constant speed stirrer, is mixed plasticizer and wool powder, mixing speed
For 800r/min；Sealed beaker stands 10h under normal temperature conditions.
(5) dry 3h is put into air dry oven, and drying temperature is 80 DEG C.
(6) dried powder is laid on mold, density 0.1g/cm, using 4128 hot press of CARVER in temperature
It spends for hot pressing 14min under conditions of 150 DEG C, pressure 90MPa.
(7) it is completed to hot pressing, it is cooling in normal temperature environment.
The wool base biological plastics obtained by the present embodiment method, breaking strength 8.93Mpa, elongation at break are
36.38%, work to break 0.149J, Young's modulus 157.62MPa.
Embodiment 4
Plasticizer in embodiment 1 is adjusted to glycerol, other steps or parameter and embodiment 1 are unanimously.
The wool base biological plastics obtained by the present embodiment method, breaking strength 8.75MPa, elongation at break are
34.38%, work to break 0.138J, Young's modulus 198.77MPa.
Embodiment 5
Plasticizer in embodiment 1 is adjusted to propylene glycol, other steps or parameter and embodiment 1 are unanimously.
The wool base biological plastics obtained by the present embodiment method, breaking strength 8.76Mpa, elongation at break are
33.83%, work to break 0.142J, Young's modulus 140.5MPa.
Reference examples 1
By the liquid-nitrogen freeze drying modification of step (2) in embodiment 1 are as follows: the wool after heat treatment drains away the water, is placed in
Temperature is forced air drying in 80 DEG C of hot-air ovens.Other steps and embodiment 1 are consistent.
Compare the liquid-nitrogen freeze drying of embodiment 1, reference examples 1 heated-air drying to the performance shadow of wool base biological plastics
It rings.
In wool base biological plastics its microstructure shown in Fig. 2 handled through liquid-nitrogen freeze drying, powder and powder
Between connection it is closer, the wool base biological plastics that forced air drying is handled has obviously between fiber and fiber
Gap.The wool base biological plastics section that Fig. 3 is shown is more smooth, and internal interface is more fuzzy, and mouldability is more preferable.This is because
The wool powder voids that liquid nitrogen is rapidly frozen, vacuum freeze-drying is dried retain very well, and ethylene glycol plasticizer can be quick
It penetrates into polymer chain, destroys the disulfide bond crosslinking between keratin macromolecular；Meanwhile molecular weight glycol very little, it is easy
Original hydrogen bond fracture, polymer chain in polypeptide chain is set to form new hydrogen bond, the disulfide bond between wool keratin is sufficiently broken water
Solution.
Table 1 is that the wool base that embodiment 1 is handled using liquid-nitrogen freeze drying processing, the forced air drying of reference examples 1 is raw
The mechanical experimental results of object plastics.
1 different disposal method of table prepares wool base biological plastics Mechanics Performance Testing
| Processing method | Breaking strength | Elongation at break | Work to break |
| Liquid-nitrogen freeze drying processing | 8.98MPa | 36.55% | 0.15J |
| Forced air drying processing | 7.25MPa | 22.48% | 0.12J |
As shown in Table 1, liquid-nitrogen freeze drying processing can effectively improve the flexibility of wool base biological plastics, while can also
Enhance the strength of biological plastics, this is because the wool powder of chilled processing preparation can when the ethylene glycol of same amount is added
Become apparent from the plasticization effect of ethylene glycol, plasticizer more fills part to the processing of protein, and ethylene glycol enters wool keratin and divides greatly
There is a large amount of hydroxyl in son, in ethylene glycol, the strand of protein is unfolded, disconnects original hydrogen bond in protein molecule, with
They form new hydrogen bond, increase the distance of polypeptide interchain, this is easier intermolecular sliding, therefore keep wool base raw
Object plastics have better extensibility.
Liquid-nitrogen freeze drying processing wool base biological plastics stress-strain diagram, forced air drying processing wool are analyzed respectively
Base biological plastics stress-strain diagram, the results show that the Young's modulus of the wool base biological plastics handled by liquid nitrogen frozen is
158.86MPa, and the Young's modulus of the wool base biological plastics of forced air drying processing is 240.91MPa.Young's modulus is reflection
Solid material resists the physical quantity of deformability, his value is bigger to illustrate that sample is more not susceptible to deformation, and this also illustrates through liquid
The wool base biological plastics flexibility that chilled nitrogen is dried is more preferable.
In addition, quality is very soft, soft when the wool base biological plastics that embodiment 1 obtains saves under sealed conditions
Toughness, transparency are splendid, and surfacing does not tilt and can be two weeks around center axis rotation.
Although the present invention has been described by way of example and in terms of the preferred embodiments, it is not intended to limit the invention, any to be familiar with this skill
The people of art can do various change and modification, therefore protection model of the invention without departing from the spirit and scope of the present invention
Enclosing subject to the definition of the claims.
Claims (10)
1. the waste wool base biological plastics preparation method that a kind of flexibility improves, which is characterized in that the preparation method includes:
(1) hot-water pretreatment: it will be added in aqueous solution by the waste wool fiber cut short, clean, cleaned, handled in 120~135 DEG C
30~100min；(2) it is freeze-dried: pouring into liquid nitrogen, allow waterishlogged wool fiber quick freeze, then in freeze drier
Dry 15~for 24 hours；(3) the superfine wool powder for 0.5~2 μm is ground；(4) it is stirred with plasticizer, then places 8-
12h；(5) redrying；(6) hot-forming；(7) cooling.
2. the method according to claim 1, wherein the step (1) cuts short wool fiber for 3-5mm.
3. the method according to claim 1, wherein the step (3) grind be using nanon ball-mill into
Row crushes, and it is content 95%, diameter 8mm, density 6.02g/cm that mill, which is situated between,3, Mohs' hardness 9 zirconia ball, drum speed 400
Rev/min, 10~20min is ground, the superfine wool powder that partial size is 0.5~2 μm is obtained.
4. the method according to claim 1, wherein the dosage of plasticizer is wool powder in the step (4)
The 40%~50% of dry weight.
5. the method according to claim 1, wherein the step (6) hot pressing be hot pressing pressure 85~
90MPa, 7~14min of hot pressing at 150~165 DEG C of hot pressing temperature.
6. the method according to claim 1, wherein the plasticizer of the step (4) is ethylene glycol, glycerol, third
Any one in glycol.
7. the method according to claim 1, wherein the aqueous solution of the step (1) is the buffer of pH=8.
8. the method according to claim 1, wherein the removal of impurities of the step (1), clean, be anti-with dish washing liquid
Multiple cleaning for several times, removes wool surfaces grease.
9. the wool base biological plastics that any the method obtains according to claim 1~8.
10. the application of wool base biological plastics as claimed in claim 9.
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| CN107747182B (en) * | 2017-11-08 | 2020-04-28 | 绍兴兆丽新材料科技有限公司 | Cryogenic treatment method for inhibiting shrinkage of wool fabric |
| CN108468228B (en) * | 2018-04-20 | 2020-06-30 | 齐鲁工业大学 | Preparation method of cow hair powder filler modified oil-based polyurethane wet-process bass |
| CN109093880A (en) * | 2018-07-17 | 2018-12-28 | 苏州大上科高新材料有限公司 | A kind of reclaiming treatment process for TPE waste material |
| 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 |
| CN110144760B (en) * | 2019-05-21 | 2020-08-04 | 江南大学 | Preparation method of low-cost heat-insulation sound-insulation waste wool/PVA composite paper |
| CN110496694B (en) * | 2019-08-30 | 2021-07-09 | 大连工业大学 | Waste wool fiber powder and preparation method 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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| CN103407054A (en) * | 2013-08-07 | 2013-11-27 | 江南大学 | Preparation method of bioplastics based on waste keratin |
| CN104962086A (en) * | 2015-07-20 | 2015-10-07 | 江南大学 | Preparation method of composite material sourced from waste plush fabrics |
| CN105797216A (en) * | 2016-04-19 | 2016-07-27 | 西南大学 | Method for preparing porous material from silk fibroin and carboxymethyl chitosan |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407054A (en) * | 2013-08-07 | 2013-11-27 | 江南大学 | Preparation method of bioplastics based on waste keratin |
| CN104962086A (en) * | 2015-07-20 | 2015-10-07 | 江南大学 | Preparation method of composite material sourced from waste plush fabrics |
| CN105797216A (en) * | 2016-04-19 | 2016-07-27 | 西南大学 | Method for preparing porous material from silk fibroin and carboxymethyl chitosan |
Non-Patent Citations (1)
| Title |
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| "冷冻处理对羊毛织物改性的研究";王邦海，朱若英;《毛纺科技》;20130705;第41卷(第7期);第44-47页 |
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