CN109735074A - A kind of environment-friendly degradable fiber shoes materials and preparation method thereof - Google Patents
A kind of environment-friendly degradable fiber shoes materials and preparation method thereof Download PDFInfo
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- CN109735074A CN109735074A CN201910028184.5A CN201910028184A CN109735074A CN 109735074 A CN109735074 A CN 109735074A CN 201910028184 A CN201910028184 A CN 201910028184A CN 109735074 A CN109735074 A CN 109735074A
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Abstract
The invention discloses a kind of environment-friendly degradable fiber shoes materials and preparation method thereof, the environment-friendly degradable fiber shoes materials include the component of following parts by weight: 30-50 parts of polylactic acid, modified 30-50 parts of moso bamboo fiber, 4-10 parts of poly butyric ester, 3-6 parts of glycerol, 0.2-1.5 parts of surfactant, 0.2-1 parts of levelling agent, 0.1-0.5 parts of antioxidant, comprehensive above-mentioned each component is 100 parts by weight；The present invention is by mixing and being modified to polylactic acid polylactic acid, poly butyric ester, it enables to generate good compatibility between the superficial layer and polylactic acid of moso bamboo fiber, it is modified simultaneously using the polydactyl acid infiltration moso bamboo fiber containing milk protein, first is that the antistatic property of shoes materials can be improved, second is that i.e. contain milk protein block contains polylactic acid block to the polydactyl acid containing milk protein of the infiltration inside moso bamboo fiber again, therefore it can be connect by chemical bond and hydrogen bond with polylactic acid, shoes materials structure is stronger, its intensity is enable to guarantee.
Description
Technical field
The present invention relates to degradable composite material preparation technical fields, and in particular to a kind of environment-friendly degradable fiber shoes materials
And preparation method thereof.
Background technique
Polylactic acid is as a kind of biodegradable high molecular polymer, with good physical and mechanical property and processability
Can, it is with a wide range of applications.And the natural plant fibre by the way that low cost, low-density is added gathers cream as reinforcing material
Acid prepares natural plants base as matrix and meets material be more good physical property, and can be realized no pollution environmental protection
Degradation.Therefore it industrially has extensive utilization, most common, is using the compound of natural moso bamboo fiber and polylactic acid
Material makes footwear material.In natural plant fibre base polylactic acid composite material, the ester bond of matrix polylactic acid main chain is easy hydrolysis,
Therefore cause composite material in storage and use process, due to the comprehensive function by factors such as light, heat and oxygen, reliability
It can be gradually reduced with durability, and how shoes materials it is poly- enhance natural plant fibre base since it is exposed primarily to outdoor
The anti-aging property of lactic acid composite is those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved in the present invention is to provide a kind of improvement to meet material family
Outer service performance, the environment-friendly degradable fiber shoes materials for improving anti-aging property and preparation method thereof.
The specific technical solution that the present invention takes is:
A kind of environment-friendly degradable fiber shoes materials, the component including following parts by weight: 30-50 parts of polylactic acid, modified moso bamboo
30-50 parts of fiber, 3-6 parts of glycerol, 0.2-1.5 parts of surfactant, 0.2-1 parts of levelling agent, resists 4-10 parts of poly butyric ester
0.1-0.5 parts of oxygen agent, comprehensive above-mentioned each component is 100 parts by weight；The modified moso bamboo fiber is will in a manner of impregnation
On the moso bamboo fiber of drying described in polydactyl acid solution immersion containing milk protein, then it is dried to obtain.
Preferably, the polydactyl acid aqueous solution containing milk protein the preparation method comprises the following steps: one, with graduated cylinder measure 1000
The fresh plain chocolate of parts by weight takes out and is placed in conical flask after placing it in evaporator for decompression evaporation 12h, conical flask is placed on
In centrifuge, it is centrifuged the NaOH aqueous solution of addition 100-180 parts by weight after 4h, the Separation of Proteins in lye comes out, and is added 50
The NaCl solution that parts by weight mass fraction is 3%, protein are precipitated, the protein of precipitation are collected in conical flask, milk is obtained
Albumen powder, milk protein powder is dissolved in be configured in suitable quantity of water milk protein quality score be 5-10% milk protein it is water-soluble
Liquid；Two, milk protein aqueous solution, DL- lactide, polyethanol, initiator are pressed to the weight of 50-80:6-9:2-7:0.3-0.8
Than carrying out melting initiation grafting in mixer, obtaining the polydactyl acid aqueous solution containing milk protein.
Preferably, the mode of the impregnation is to impregnate moso bamboo with the polydactyl acid aqueous solution shaking containing milk protein
Fiber 20-22h, shaking frequency are 160-180r/min.
Preferably, the polylactic acid molecule amount be 125000-150000, melt index be 8-10g/min (170 DEG C,
2.18kg), density 1.25g-1.3g/cm3。
Preferably, the moso bamboo fiber, specification are 30-70 mesh, and fibre length specification≤150um accounts for 15%, 150-280um
It accounts for 20%, 280-850um and accounts for 35%, 850-1700um and account for 20%, >=1700um accounts for 10%.
Preferably, the surfactant be one of magnesium stearate, fatty glyceride, lauryl sodium sulfate or
It is several.
Preferably, the levelling agent is epoxidized soybean oil fatty acid, hydrogenated rosins alcohol, one in Siloxane-Oxyalkylene Copolymers
Kind or a variety of mixing.
Preferably, the polylactic acid and the weight ratio of modified moso bamboo fiber are 1:1.
The present invention also provides a kind of preparation methods of environment-friendly degradable fiber shoes materials, include the following steps:
(1) raw material preparation: by weight, 30-50 parts of polylactic acid, modified 30-50 parts of moso bamboo fiber, poly butyric ester
4-10 parts, 3-6 parts of glycerol, 0.2-1.5 parts of surfactant, 0.2-1 parts of levelling agent, 0.1-0.5 parts of antioxidant, above-mentioned each component
Comprehensive is 100 parts by weight；The modified moso bamboo fiber be by a manner of impregnation by the polydactyl acid containing milk protein
On the moso bamboo fiber of drying described in solution immersion, then it is dried to obtain；
(2) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
It (3) in proportion will modified moso bamboo fiber, glycerol, surfactant, levelling agent, antioxidant and polylactic acid/poly- hydroxyl
Butyrate film is uniformly mixed；
(4) material made from step (3) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and carry out
It is granulated, the double-screw extruder screw diameter is 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, humidity province
Between from 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout；
(5) particulate material made from step (4) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
Preferably, the polylactic acid molecule amount be 125000-150000, melt index be 8-10g/min (170 DEG C,
2.18kg), density 1.25g-1.3g/cm3。
Compared with prior art, the invention has the following advantages: the present invention is by by polylactic acid, polyhydroxybutyrate
Ester mixing is modified polylactic acid, enables to generate good compatibility between the superficial layer and polylactic acid of moso bamboo fiber,
It is modified simultaneously using the polydactyl acid infiltration moso bamboo fiber containing milk protein, first is that the antistatic of shoes materials can be improved
Performance, second is that polydactyl acid containing milk protein of the infiltration inside moso bamboo fiber contain milk protein block contain again it is poly-
Lactic acid block, therefore can be connect by chemical bond and hydrogen bond with polylactic acid, shoes materials structure is stronger, its intensity is enable to protect
Card.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto,
Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, various replace is made
It changes and changes, should all be included within the scope of the invention.
Embodiment 1
A kind of preparation method of environment-friendly degradable fiber shoes materials, includes the following steps:
(1) it the preparation of modified moso bamboo fiber: one, with graduated cylinder measures 1000 parts by weight fresh plain chocolate, places it in evaporation
It takes out and is placed in conical flask after reduction vaporization 12h in device, conical flask is placed in centrifuge, 100 weight are added after being centrifuged 4h
Part NaOH aqueous solution, the Separation of Proteins in lye comes out, and the NaCl solution that 50 parts by weight mass fractions are 3%, egg is added
White matter is precipitated, and the protein of precipitation is collected in conical flask, milk protein powder is obtained, milk protein powder is dissolved in suitable quantity of water and is matched
The milk protein aqueous solution that milk protein quality score is 4% is made；Two, by milk protein aqueous solution, DL- lactide, poly- second
Alcohol, initiator press the weight ratio of 50:6:2:0.3, and melting initiation grafting is carried out in mixer, and it is poly- to obtain the modification containing milk protein
Lactic acid aqueous solution；Three, moso bamboo fiber 20h is impregnated with the polydactyl acid aqueous solution shaking containing milk protein, shaking frequency is
160r/min is so dry that be modified moso bamboo fiber；
(2) by weight, 31 parts of polylactic acid, 10 parts of poly butyric ester, 6 parts of glycerol, 1.5 parts of magnesium stearate, ring are taken
1 part of schou oil fatty acid, 50 parts of the modification moso bamboo fiber of 0.5 part of antioxidant and step (1) preparation, above-mentioned each component synthesis are
100 parts by weight；The polylactic acid molecule amount is 125000, and melt index is 8g/min (170 DEG C, 2.18kg), density 1.25gg/
cm3；
(3) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
It (4) in proportion will modified moso bamboo fiber, glycerol, magnesium stearate, epoxidized soybean oil fatty acid, antioxidant and poly- cream
Acid/Polyhydroxybutyrate Membrane in Animals is uniformly mixed；
(5) material made from step (4) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and carry out
It is granulated；The double-screw extruder screw diameter is 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, humidity province
Between from 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout；
(6) particulate material made from step (5) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
Embodiment 2
A kind of preparation method of environment-friendly degradable fiber shoes materials, includes the following steps:
(1) it the preparation of modified moso bamboo fiber: one, with graduated cylinder measures 1000 parts by weight fresh plain chocolate, places it in evaporation
It takes out and is placed in conical flask after reduction vaporization 12h in device, conical flask is placed in centrifuge, 120 weight are added after being centrifuged 4h
Part NaOH aqueous solution, the Separation of Proteins in lye comes out, and the NaCl solution that 50 parts by weight mass fractions are 3%, egg is added
White matter is precipitated, and the protein of precipitation is collected in conical flask, milk protein powder is obtained, milk protein powder is dissolved in suitable quantity of water and is matched
The milk protein aqueous solution that milk protein quality score is 6% is made；Two, by milk protein aqueous solution, DL- lactide, poly- second
Alcohol, initiator press the weight ratio of 60:7:3:0.4, and melting initiation grafting is carried out in mixer, and it is poly- to obtain the modification containing milk protein
Lactic acid aqueous solution；Three, moso bamboo fiber 20h is impregnated with the polydactyl acid aqueous solution shaking containing milk protein, shaking frequency is
160r/min is so dry that be modified moso bamboo fiber；
(2) by weight, 50 parts of polylactic acid, 10 parts of poly butyric ester, 6 parts of glycerol, fatty glyceride 1.5 are taken
Part, 31 parts of the modification moso bamboo fiber of 1 part of hydrogenated rosins alcohol, 0.5 part of antioxidant and step (1) preparation, above-mentioned each component synthesis are
100 parts by weight；The polylactic acid molecule amount is 130000, and melt index is 8.5g/min (170 DEG C, 2.18kg), density
1.26g/cm3；
(3) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
(4) in proportion will modified moso bamboo fiber, glycerol, fatty glyceride, hydrogenated rosins alcohol, antioxidant and polylactic acid/
Polyhydroxybutyrate Membrane in Animals is uniformly mixed；
(5) material made from step (4) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and carry out
It is granulated；The double-screw extruder screw diameter is 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, humidity province
Between from 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout；
(6) particulate material made from step (5) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
Embodiment 3
A kind of preparation method of environment-friendly degradable fiber shoes materials, includes the following steps:
(1) it the preparation of modified moso bamboo fiber: one, with graduated cylinder measures 1000 parts by weight fresh plain chocolate, places it in evaporation
It takes out and is placed in conical flask after reduction vaporization 12h in device, conical flask is placed in centrifuge, 160 weight are added after being centrifuged 4h
Part NaOH aqueous solution, the Separation of Proteins in lye comes out, and the NaCl solution that 50 parts by weight mass fractions are 3%, egg is added
White matter is precipitated, and the protein of precipitation is collected in conical flask, milk protein powder is obtained, milk protein powder is dissolved in suitable quantity of water and is matched
The milk protein aqueous solution that milk protein quality score is 8% is made；Two, by milk protein aqueous solution, DL- lactide, poly- second
Alcohol, initiator press the weight ratio of 70:8:6:0.7, and melting initiation grafting is carried out in mixer, and it is poly- to obtain the modification containing milk protein
Lactic acid aqueous solution；Three, moso bamboo fiber 22h is impregnated with the polydactyl acid aqueous solution shaking containing milk protein, shaking frequency is
180r/min is so dry that be modified moso bamboo fiber；
(2) by weight, take 38 parts of polylactic acid, 9 parts of poly butyric ester, 4 parts of glycerol, 1 part of lauryl sodium sulfate,
47 parts of modification moso bamboo fiber, the above-mentioned each component of 0.7 part of Siloxane-Oxyalkylene Copolymers, 0.3 part of antioxidant and step (1) preparation are comprehensive
It is combined into 100 parts by weight；The polylactic acid molecule amount is 140000, and melt index is 9.5g/min (170 DEG C, 2.18kg), density
1.28g/cm3；
(3) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
(4) in proportion will modified moso bamboo fiber, glycerol, lauryl sodium sulfate, Siloxane-Oxyalkylene Copolymers, antioxidant with
Polylactic acid/Polyhydroxybutyrate Membrane in Animals is uniformly mixed；
(5) material made from step (4) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and carry out
It is granulated；The double-screw extruder screw diameter is 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, humidity province
Between from 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout；
(6) particulate material made from step (5) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
Embodiment 4
A kind of preparation method of environment-friendly degradable fiber shoes materials, includes the following steps:
(1) it the preparation of modified moso bamboo fiber: one, with graduated cylinder measures 1000 parts by weight fresh plain chocolate, places it in evaporation
It takes out and is placed in conical flask after reduction vaporization 12h in device, conical flask is placed in centrifuge, 180 weight are added after being centrifuged 4h
Part NaOH aqueous solution, the Separation of Proteins in lye comes out, and the NaCl solution that 50 parts by weight mass fractions are 3%, egg is added
White matter is precipitated, and the protein of precipitation is collected in conical flask, milk protein powder is obtained, milk protein powder is dissolved in suitable quantity of water and is matched
The milk protein aqueous solution that milk protein quality score is 9% is made；Two, by milk protein aqueous solution, DL- lactide, poly- second
Alcohol, initiator press the weight ratio of 75:8:5:0.6, and melting initiation grafting is carried out in mixer, and it is poly- to obtain the modification containing milk protein
Lactic acid aqueous solution；Three, moso bamboo fiber 22h is impregnated with the polydactyl acid aqueous solution shaking containing milk protein, shaking frequency is
180r/min is so dry that be modified moso bamboo fiber；
(2) by weight, take 41 parts of polylactic acid, 5 parts of poly butyric ester, 5 parts of glycerol, 0.2 part of fatty glyceride,
0.3 part of lauryl sodium sulfate, 0.4 part of epoxidized soybean oil fatty acid, 0.4 part of Siloxane-Oxyalkylene Copolymers, 0.2 part of antioxidant and
Comprehensive 47.5 parts of modification moso bamboo fiber, the above-mentioned each component of step (1) preparation is 100 parts by weight；The polylactic acid molecule amount is
150000, melt index is 10g/min (170 DEG C, 2.18kg), density 1.3g/cm3；
(3) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
It (4) in proportion will modified moso bamboo fiber, glycerol, fatty glyceride, lauryl sodium sulfate, epoxidized soybean oil rouge
Fat acid, Siloxane-Oxyalkylene Copolymers, antioxidant are uniformly mixed with polylactic acid/Polyhydroxybutyrate Membrane in Animals；
(5) material made from step (4) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and carry out
It is granulated；The double-screw extruder screw diameter is 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, humidity province
Between from 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout；
(6) particulate material made from step (5) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
Embodiment 5
A kind of preparation method of environment-friendly degradable fiber shoes materials, includes the following steps:
(1) it the preparation of modified moso bamboo fiber: one, with graduated cylinder measures 1000 parts by weight fresh plain chocolate, places it in evaporation
It takes out and is placed in conical flask after reduction vaporization 12h in device, conical flask is placed in centrifuge, 140 weight are added after being centrifuged 4h
Part NaOH aqueous solution, the Separation of Proteins in lye comes out, and the NaCl solution that 50 parts by weight mass fractions are 3%, egg is added
White matter is precipitated, and the protein of precipitation is collected in conical flask, milk protein powder is obtained, milk protein powder is dissolved in suitable quantity of water and is matched
The milk protein aqueous solution that milk protein quality score is 7.5% is made；Two, by milk protein aqueous solution, DL- lactide, poly-
Ethyl alcohol, initiator press the weight ratio of 65:7.5:4.5:0.55, and melting initiation grafting is carried out in mixer, is obtained containing milk protein
Polydactyl acid aqueous solution；Three, moso bamboo fiber 21h, shaking are impregnated with the polydactyl acid aqueous solution shaking containing milk protein
Frequency is 170r/min, so dry that be modified moso bamboo fiber；
(2) by weight, 43.2 parts of polylactic acid, 7 parts of poly butyric ester, 4.5 parts of glycerol, surfactant 0.8 are taken
Part, 43.2 parts of the modification moso bamboo fiber of 0.6 part of levelling agent, 0.3 part of antioxidant and step (1) preparation, above-mentioned each component synthesis are
100 parts by weight；The polylactic acid molecule amount is 135000, and melt index is 9g/min (170 DEG C, 2.18kg), density 1.27g/
cm3；
(3) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
It (4) in proportion will modified moso bamboo fiber, glycerol, surfactant, levelling agent, antioxidant and polylactic acid/poly- hydroxyl
Butyrate film is uniformly mixed；
(5) material made from step (4) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and carry out
It is granulated；The double-screw extruder screw diameter is 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, humidity province
Between from 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout；
(6) particulate material made from step (5) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
Performance test
1, the shoes materials and common natural plant fibre base polylactic acid composite material of the preparation of the embodiment of the present invention 5 are weighed respectively
40g is respectively divided into 8 parts of progress quantitative measurements, M0And M1Shown under quality respectively before and after aging, result such as table:
Table 1 is the shoes materials difference ageing time mass loss rate test result of embodiment 5
| Ageing time (d) | M0(g) | M1(g) | (M0-M1) | Mass loss rate K (%) |
| 0 | 5 | 5 | 0 | 0 |
| 8 | 5 | 4.9963 | 0.0037 | 0.074 |
| 28 | 5 | 4.4902 | 0.0098 | 0.196 |
| 48 | 5 | 4.9328 | 0.0672 | 1.344 |
| 68 | 5 | 4.8837 | 0.1163 | 2.326 |
| 88 | 5 | 4.8312 | 0.1688 | 3.376 |
| 118 | 5 | 4.7682 | 0.2318 | 4.636 |
| 138 | 5 | 4.9989 | 0.3011 | 6.022 |
Table 2 is common natural plant fibre base polylactic acid composite material difference ageing time mass loss rate test result
| Ageing time (d) | M0(g) | M1(g) | (M0-M1) | Mass loss rate K (%) |
| 0 | 5 | 5 | 0 | 0 |
| 8 | 5 | 4.9901 | 0.0101 | 0.202 |
| 28 | 5 | 4.8941 | 0.1059 | 2.118 |
| 48 | 5 | 4.6839 | 0.3161 | 6.322 |
| 68 | 5 | 4.5164 | 0.4836 | 9.672 |
| 88 | 5 | 4.4509 | 0.5491 | 10.982 |
| 118 | 5 | 4.3609 | 0.6391 | 12.782 |
| 138 | 5 | 4.2426 | 0.7574 | 15.148 |
Table 3 is the shoes materials difference ageing time mechanical experimental results of embodiment 5
Table 4 is common natural plant fibre base polylactic acid composite material difference ageing time mechanical experimental results
| Ageing time (d) | Impact strength (kJ/mm2) | Tensile strength (MPa) |
| 0 | 11.2 | 60.1 |
| 8 | 10.8 | 59.6 |
| 28 | 8.5 | 46.7 |
| 48 | 6.9 | 39.5 |
| 68 | 5.9 | 34.4 |
| 88 | 4.6 | 28.1 |
| 118 | 4.0 | 19.9 |
| 138 | 2.7 | 17.6 |
Can be seen that improvement through the invention from the test result of table 1-4, the aging speed of shoes materials obviously slows down,
And mechanical property is obviously more excellent than common natural plant fibre base polylactic acid composite material.
It should be pointed out that above embodiments are only the preferred embodiment of the present invention, above embodiment is not construed as
Limitation of the present invention, protection scope of the present invention should be subject to the range that claim is limited.For the art
Those of ordinary skill for, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made and also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of environment-friendly degradable fiber shoes materials, it is characterised in that the component including following parts by weight: 30-50 parts of polylactic acid,
Modified 30-50 parts of moso bamboo fiber, 4-10 parts of poly butyric ester, 3-6 parts of glycerol, 0.2-1.5 parts of surfactant, levelling agent
0.2-1 parts, 0.1-0.5 parts of antioxidant, comprehensive above-mentioned each component is 100 parts by weight；The modified moso bamboo fiber is will be with dipping
On the moso bamboo fiber of drying described in polydactyl acid solution immersion of the mode of processing containing milk protein, then it is dried to obtain
's.
2. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the changing containing milk protein
Property polylactic acid aqueous solution the preparation method comprises the following steps: one, with graduated cylinder measure the fresh plain chocolate of 1000 parts by weight, place it in evaporator
It takes out and is placed in conical flask after reduction vaporization 12h, conical flask is placed in centrifuge, 100-180 weight is added after being centrifuged 4h
Part NaOH aqueous solution, the Separation of Proteins in lye comes out, and the NaC l solution that 50 parts by weight mass fractions are 3%, egg is added
White matter is precipitated, and the protein of precipitation is collected in conical flask, milk protein powder is obtained, milk protein powder is dissolved in suitable quantity of water and is matched
The milk protein aqueous solution that milk protein quality score is 5-10% is made；Two, by milk protein aqueous solution, DL- lactide, poly-
Ethyl alcohol, initiator press the weight ratio of 50-80:6-9:2-7:0.3-0.8, and melting initiation grafting is carried out in mixer, is obtained containing ox
The polydactyl acid aqueous solution of milk proem.
3. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the mode of the impregnation
To impregnate moso bamboo fiber 20-22h with the polydactyl acid aqueous solution shaking containing milk protein, shaking frequency is 160-180r/
min。
4. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the polylactic acid molecule amount is
125000-150000, density 1.25g-1.3g/cm3, when environment temperature is 170 DEG C, and load is 2.18kg, melt index is
8-10g/min。
5. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the moso bamboo fiber, specification are
30-0 mesh, fibre length specification≤150um, which accounts for 15%, 150-280um and accounts for 20%, 280-850um and account for 35%, 850-1700um, to be accounted for
20%, >=1700um accounts for 10%.
6. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the surfactant is hard
One or more of fatty acid magnesium, fatty glyceride, lauryl sodium sulfate.
7. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the levelling agent is epoxidation
One of soy(a)-bean oil fatty acid, hydrogenated rosins alcohol, Siloxane-Oxyalkylene Copolymers or a variety of mixing.
8. a kind of environment-friendly degradable fiber shoes materials according to claim 1, it is characterised in that the polylactic acid and modified hair
The weight ratio of bamboo fibre is 1:1.
9. a kind of preparation method of environment-friendly degradable fiber shoes materials, it is characterised in that include the following steps:
(1) raw material preparation: by weight, 30-50 parts of polylactic acid, modified 30-50 parts of moso bamboo fiber, poly butyric ester 4-10
Part, 3-6 parts of glycerol, 0.2-1.5 parts of surfactant, 0.2-1 parts of levelling agent, 0.1-0.5 parts of antioxidant, above-mentioned each component are comprehensive
For 100 parts by weight；The modified moso bamboo fiber is will be water-soluble by the polydactyl acid containing milk protein in a manner of impregnation
Liquid infiltrates on the moso bamboo fiber of the drying, is then dried to obtain；
(2) polylactic acid, poly butyric ester are mixed, carries out melting and casting and polylactic acid/Polyhydroxybutyrate Membrane in Animals is made；
It (3) in proportion will modified moso bamboo fiber, glycerol, surfactant, levelling agent, antioxidant and polylactic acid/polyhydroxybutyrate
Ester film is uniformly mixed；
(4) material made from step (3) is added in double screw extruder through spout and is squeezed out, be sent into pelletizer and made
Grain, the double-screw extruder screw diameter are 15.6mm, draw ratio 40:1, and extruder has 8 temperature controlled zones, temperature range
From 155-190 DEG C, wherein 155-155 DEG C of temperature range is close to spout
(5) particulate material made from step (4) is injection moulded by injector, obtains environment-friendly degradable fiber shoes materials.
10. a kind of preparation method of environment-friendly degradable fiber shoes materials according to claim 9, it is characterised in that described
Polylactic acid molecule amount is 125000-150000, density 1.25g-1.3g/cm3, it is 170 DEG C in environment temperature, load 2.18kg
When, melt index 8-10g/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910028184.5A CN109735074B (en) | 2019-01-11 | 2019-01-11 | Environment-friendly degradable fiber shoe material and preparation method thereof |
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| CN201910028184.5A CN109735074B (en) | 2019-01-11 | 2019-01-11 | Environment-friendly degradable fiber shoe material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109735074A true CN109735074A (en) | 2019-05-10 |
| CN109735074B CN109735074B (en) | 2020-11-17 |
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| WO2009043580A1 (en) * | 2007-10-03 | 2009-04-09 | Universidad De Concepcion | Biodegradable composition, preparation method and their application in the manufacture of functional containers for agricultural and/or forestry use |
| CN101914293A (en) * | 2010-08-17 | 2010-12-15 | 华中农业大学 | Bamboo fiber-based full-biodegradable material and preparation method |
| CN103131149A (en) * | 2013-02-01 | 2013-06-05 | 金发科技股份有限公司 | Polylactic acid composite material, preparation method thereof and application thereof |
| CN105542409A (en) * | 2015-12-17 | 2016-05-04 | 梅庆波 | Preparation method of modified bamboo fiber / polylactic acid composite material |
| CN106189133A (en) * | 2016-07-19 | 2016-12-07 | 陈毅忠 | A kind of preparation method of polylactic acid bamboo fiber composite material |
| CN107629426A (en) * | 2017-10-13 | 2018-01-26 | 中南林业科技大学 | Bamboo fibre/lactic acid composite material and preparation method thereof |
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| WO2009043580A1 (en) * | 2007-10-03 | 2009-04-09 | Universidad De Concepcion | Biodegradable composition, preparation method and their application in the manufacture of functional containers for agricultural and/or forestry use |
| CN101914293A (en) * | 2010-08-17 | 2010-12-15 | 华中农业大学 | Bamboo fiber-based full-biodegradable material and preparation method |
| CN103131149A (en) * | 2013-02-01 | 2013-06-05 | 金发科技股份有限公司 | Polylactic acid composite material, preparation method thereof and application thereof |
| CN105542409A (en) * | 2015-12-17 | 2016-05-04 | 梅庆波 | Preparation method of modified bamboo fiber / polylactic acid composite material |
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