CN109056107A - A kind of preparation method of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber - Google Patents
A kind of preparation method of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber Download PDFInfo
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- CN109056107A CN109056107A CN201811156861.3A CN201811156861A CN109056107A CN 109056107 A CN109056107 A CN 109056107A CN 201811156861 A CN201811156861 A CN 201811156861A CN 109056107 A CN109056107 A CN 109056107A
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- polyethylene glycol
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
Abstract
The present invention relates to a kind of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber preparation methods, belong to phase transformation nano-fiber material field.The method by using polyethylene glycol mass concentration be 20%~40% polyethylene glycol spinning solution as inner tube spinning solution, the Kynoar spinning solution that Kynoar mass concentration is 15%~25% is as outer tube spinning solution, in temperature be 20~40 DEG C, in the environment of humidity is 10~40%, it is 0.060~0.110 progress coaxial electrostatic spinning according to inner tube spinning solution and outer tube spinning solution velocity ratio, it is obtained after vacuum drying removal n,N-dimethylacetamide and acetone after spinning.Fiber is prepared with higher enthalpy of phase change in the method, while complete core-shell structure is presented, and excellent in mechanical performance.
Description
Technical field
The present invention relates to a kind of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber preparation methods, belong to phase transformation
Nano-fiber material field.
Background technique
Thermal energy is one of current most rich promising clean reproducible energy, it can be from daily industrial waste gas and sun spoke
Hit free acquisition.It is also more more and more urgent to the research of key area thermal energy storage with the increasingly increase that global energy consumes.
By medium appropriate, to store extra thermal energy, the solution energy is not only facilitated to utilize in suitable time and occasion
The unmatched problem of supply and demand on room and time, and industrial energy efficiency is largely improved, expand
Big nature available energy.
Under normal circumstances, there are mainly three types of forms for storage thermal energy at different temperatures: by heating liquid or solid medium
Sensible heat accumulation of energy, the hidden heat energy storage using phase-change material and the heat chemistry energy storage by chemical reaction.In these three forms, phase
Change material is since with energy storage density, temperature fluctuation is small, at low cost, chemical stability is good, non-corrosive in big, heat-accumulating process for it
The advantages that, it is most competitive heat accumulation form.The phase transformation of material can be solid-liquid, liquid-gas, gas-solid and solid-solid.Wherein most
For the form of commonly solid-liquid.Phase-change material from liquid to Solid State Transformation when will the heat release from environment, conversely, being inhaled to environment
Heat.The energy that can be stored or discharge when physical state changes is known as the heat of transformation, and the temperature range undergone phase transition is very narrow.Object
When reason state changes, the temperature of material itself almost remains unchanged before phase transformation is completed.Polyethylene glycol is a kind of typical
Solid-liquid phase change material has the characteristics that nontoxic, corrosion-resistant, heat content is big, molecular weight selective is wide.So the frequent quilt of polyethylene glycol
It is elected to be the energy storage material of stable phase-change material.
Polymer nanocomposite phase change fiber is common to be prepared with: surface covering method, doughnut infusion process, doughnut filling
Method, composite spinning method etc..Wherein, electrostatic spinning is that a kind of simple and effective developed rapidly in recent years prepares polymer nano
The processing technology of rice fiber.At present there is fiber in Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber during the preparation process
The shortcomings that enthalpy of phase change is low, polyethylene glycol leaks and poor mechanical property.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fibers
Preparation method, there is complete core-shell structure by spinning fibre that relevant parameter optimization is prepared, and there is phase
Become the features such as enthalpy is high, leakage is small, excellent in mechanical performance, is that it leads in biological field, UF membrane, ecological environmental protection and electrochemistry
Domain etc. provides the foundation data, can be used as phase-change material, and the application range for extending composite fiber membrane material has important
Theoretical research value and actual application prospect.
To achieve the above object, technical scheme is as follows:
A kind of preparation method of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber, the method comprises the following steps:
Step 1: at 40~50 DEG C, the polyethylene glycol that molecular weight is 600 and 8000 is mixed, it is total to obtain polyethylene glycol
Mixed object, the polyethylene glycol that middle-molecular-weihydroxyethyl is 600 account for the 20%~80% of mixture gross mass, mixture are dissolved in N, N- bis-
It in the mixed solvent 1 of methylacetamide and acetone, is uniformly mixed, obtains the poly- second that polyethylene glycol mass concentration is 20%~40%
Glycol spinning solution；
Step 2: at 40~50 DEG C, the mixing that Kynoar is dissolved in n,N-dimethylacetamide and acetone is molten
It in agent 2, is uniformly mixed, obtains the Kynoar spinning solution that Kynoar mass concentration is 15%~25%；
Step 3: it using polyethylene glycol spinning solution as inner tube spinning solution, is spun by outer tube of Kynoar spinning solution
Silk solution, in temperature be 20~40 DEG C, humidity be 10~40% in the environment of, according to inner tube spinning solution and outer tube spinning solution
Velocity ratio is 0.060~0.110 progress coaxial electrostatic spinning, vacuum drying removal n,N-dimethylacetamide and third after spinning
Ketone obtains a kind of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber；
Wherein, in mixed solvent 1 and mixed solvent 2, the mass fraction of n,N-dimethylacetamide is each independently 20~
40%, the mass fraction of acetone is each independently 60~80%.
Preferably, voltage is 10~18KV when the coaxial electrostatic spinning；Receiving distance is 10~18cm.
Preferably, the flow velocity of outer tube spinning solution is 1.6mL/h；The flow velocity of inner tube spinning solution is 106~176 μ L/h.
Preferably, by the fiber after spinning in pressure≤- 100KPa, temperature is vacuum drying 12 hours or more at 30 DEG C,
Remove DMAC N,N' dimethyl acetamide and acetone.
Beneficial effect
(1) spin inner tube by control inner tube spinning solution and outer tube spinning solution velocity ratio in the method for the invention
Silk solution has one suitably to match with the flow velocity of outer tube spinning solution, and suitable core shell laminar flow speed matches so that increasing sandwich layer
While polymer specific gravity, core layer polymer is coated completely by sheath polymers, i.e., while improving spinning fibre enthalpy of phase change
The spinning fibre with complete core-shell structure has been obtained, and there is excellent mechanical property.
(2) the coaxial electrostatic spinning silk fiber that the method for the invention is prepared has complete core-shell structure, avoids
The leakage problem of phase-change material in uniaxial electrospinning fibre, to improve the thermal stability of fiber；Its core-shell structure can pass through water
The characterization methods such as contact angle test, transmission electron microscope verifying, the results showed that the polyethylene glycol of stratum nucleare is well by shell
Kynoar cladding, effectively prevents the leakage of polyethylene glycol.
(3) the coaxial electrostatic spinning silk fiber that the method for the invention is prepared has biggish phase transformation heat enthalpy value.It utilizes
Phase-change material-polyethylene glycol carries out absorbing and releasing for energy in fiber, and fiber can be made to play tune in specific temperature range
The purpose of controlling temperature.
(4) the coaxial electrostatic spinning silk fiber that the method for the invention is prepared has excellent comprehensive mechanical property.Its
Elongation at break reaches as high as 159.1%, and fracture strength maximum is up to 3.27MPa.It can effectively prevent in use
Situations such as fracture, occurs.
Detailed description of the invention
Fig. 1 is Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber transmission electron microscope picture described in embodiment 1；
Fig. 2 is embodiment 1, Kynoar-polyethylene glycol coaxial electrostatic spinning is fine described in embodiment 2 and embodiment 3
The differential calorimetry curve of dimension；
Fig. 3 is embodiment 1, Kynoar-polyethylene glycol coaxial electrostatic spinning is fine described in embodiment 2 and embodiment 3
The stress-strain diagram of dimension.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
The main agents information mentioned in following embodiment is as follows: polyethylene glycol, molecular weight 600g/mol (Mw), factory
Family is Shanghai Aladdin biochemical technology limited liability company；Polyethylene glycol, molecular weight 8000g/mol (Mw), manufacturer are upper
Extra large Aladdin biochemical technology limited liability company；Kynoar, molecular weight 10700g/mol (Mw), manufacturer Sigma-
Aldrich；N.N- dimethyl acetamide is purchased from Tong Guang fine chemistry industry company of Beijing；Acetone is purchased from Beijing Chemical Plant；Dichloro
Methane is purchased from Beijing Chemical Plant.
(JEM-2100 type Japan JEOL is public with transmission electron microscope for the fibrous inner structure mentioned in following embodiment
Department) it measures；
The water contact angle test mentioned in following embodiment is using contact angle measurement (the upper marine morning number skill of JC2000C
Art equipment Co., Ltd) it measures, measure contact angle of the pure water on sample；
The thermal property mentioned in following embodiment is carried out using differential scanning calorimetric analysis instrument (DSC-60 Japan Shimadzu)
Test, test fiber samples are cut into the sample that quality is 3.0mg；First lead to 5 minutes nitrogen in the machine, nitrogen rate is
40mL/min；Then sample is put into machine；Liquid nitrogen is added and is cooled to 0 DEG C hereinafter, then starting to test；Test scope is from 0
DEG C to 75 DEG C, heating rate is 10 DEG C/min；
(Heiden is outstanding mechanical in DXLL-5000 type using electronics tensile tester for the mechanical property mentioned in following embodiment
Co., Ltd) it is tested, 20mm, width 4mm are grown into test fiber samples cutting, are stretched gauge and are selected 10mm, stretch speed
Degree is 10mm/min；Each experimental test 5 times calculates mean value；Testing room temperature is 25 DEG C, humidity 20%.
Embodiment 1
(1) polyethylene glycol that molecular weight is 600 and 8000 is blended in conical flask, the poly- second that middle-molecular-weihydroxyethyl is 600
The mass ratio that glycol accounts for mixture is 45%, and methylene chloride to polyethylene glycol is added and dissolves, obtains polyethylene glycol mixture solution.
Heating stirring to methylene chloride volatilizees in 45 DEG C of oil bath pans, obtains polyethylene glycol blending object after mixing.By poly- second two
Alcohol blend is placed in round-bottomed flask 1.Into round-bottomed flask 1, n,N-dimethylacetamide is added and acetone (30:70w/w) is mixed
Bonding solvent, sealed membrane sealing, at 50 DEG C, heating stirring 12 hours in oil bath pan, dissolution is complete and is uniformly mixed, and obtains poly- second
Diol concentration is the polyethylene glycol spinning solution of 20wt%.
(2) Kynoar is placed in round-bottomed flask 2, n,N-dimethylacetamide and acetone (40:60w/w) is added
Mixed solvent, sealed membrane sealing, at 50 DEG C, heating stirring 18 hours in oil bath pan, dissolution is complete and is uniformly mixed, and is gathered
Vinylidene concentration is the Kynoar spinning solution of 15wt%.
(3) using Kynoar spinning solution as outer tube spinning solution, syringe needle internal diameter is 1.3mm；With polyethylene glycol spinning
Solution is inner tube spinning solution, and syringe needle internal diameter is 0.5mm, and outer diameter 0.8mm, the flow velocity of outer tube spinning solution is 1.6mL/h, interior
The flow velocity of pipe spinning solution is 107.2 μ L/h, and stratum nucleare spinning solution and shell spinning solution velocity ratio are 0.067.Using electrostatic
Spinning equipment (SS-2534 type, work in peace and contentment development in science and technology Co., Ltd for Beijing Yongkang) is 25 DEG C in temperature, the environment that humidity is 10%
Lower carry out coaxial electrostatic spinning, cathode voltage 14KV, cathode voltage 2.5KV, syringe needle to the distance for receiving aluminium foil is 15cm.
By the fiber after spinning in pressure≤- 100KPa, temperature is vacuum drying 12 hours or more, to obtain one kind at 30 DEG C and gather inclined fluorine
Ethylene-polyethylene glycol coaxial electrostatic spinning silk fiber.
Embodiment 2
(1) polyethylene glycol that molecular weight is 600 and 8000 is blended in conical flask, the poly- second that middle-molecular-weihydroxyethyl is 600
The mass ratio that glycol accounts for mixture is 45%, and methylene chloride to polyethylene glycol is added and dissolves, obtains polyethylene glycol mixture solution.
Heating stirring to methylene chloride volatilizees in 45 DEG C of oil bath pans, obtains polyethylene glycol blending object after mixing.By poly- second two
Alcohol blend is placed in round-bottomed flask 1.Into round-bottomed flask 1, n,N-dimethylacetamide is added and acetone (30:70w/w) is mixed
Bonding solvent, sealed membrane sealing, at 50 DEG C, heating stirring 12 hours in oil bath pan, dissolution is complete and is uniformly mixed, and obtains poly- second
Diol concentration is the polyethylene glycol spinning solution of 30wt%.
(2) Kynoar is placed in round-bottomed flask 2, n,N-dimethylacetamide and acetone (30:70w/w) is added
Mixed solvent, sealed membrane sealing, at 50 DEG C, heating stirring 18 hours in oil bath pan, dissolution is complete and is uniformly mixed, and is gathered
Vinylidene concentration is the Kynoar spinning solution of 20wt%.
(3) using Kynoar spinning solution as outer tube spinning solution, syringe needle internal diameter is 1.3mm；With polyethylene glycol spinning
Solution is inner tube spinning solution, and syringe needle internal diameter is 0.5mm, and outer diameter 0.8mm, the flow velocity of outer tube spinning solution is 1.6mL/h, interior
The flow velocity of pipe spinning solution is 128 μ L/h, and stratum nucleare spinning solution and shell spinning solution velocity ratio are 0.080.Electrostatic spinning is set
Standby (SS-2534 type, work in peace and contentment development in science and technology Co., Ltd for Beijing Yongkang) is 25 DEG C in temperature, and humidity carries out in the environment of being 10%
Coaxial electrostatic spinning, cathode voltage 14KV, cathode voltage 2.5KV, syringe needle to the distance for receiving aluminium foil is 15cm.By spinning
For fiber afterwards in pressure≤- 100KPa, temperature is vacuum drying 12 hours or more at 30 DEG C, and it is poly- to obtain a kind of Kynoar-
Ethylene glycol coaxial electrostatic spinning silk fiber.
Embodiment 3
(1) polyethylene glycol that molecular weight is 600 and 8000 is blended in conical flask, the poly- second that middle-molecular-weihydroxyethyl is 600
The mass ratio that glycol accounts for mixture is 45%, and methylene chloride to polyethylene glycol is added and dissolves, obtains polyethylene glycol mixture solution.
Heating stirring to methylene chloride volatilizees in 45 DEG C of oil bath pans, obtains polyethylene glycol blending object after mixing.By poly- second two
Alcohol mixes blend and is placed in round-bottomed flask 1.Into round-bottomed flask 1, n,N-dimethylacetamide and acetone (20:80w/w) is added
Mixed solvent, sealed membrane sealing, at 50 DEG C, heating stirring 12 hours in oil bath pan, dissolution is complete and is uniformly mixed, and is gathered
Glycol concentration is the polyethylene glycol spinning solution of 40wt%.
(2) Kynoar is placed in round-bottomed flask 2, n,N-dimethylacetamide and acetone (30:70w/w) is added
Mixed solvent, sealed membrane sealing, at 50 DEG C, heating stirring 18 hours in oil bath pan, dissolution is complete and is uniformly mixed, and is gathered
Vinylidene concentration is the Kynoar spinning solution of 25wt%.
(3) using Kynoar spinning solution as outer tube spinning solution, syringe needle internal diameter is 1.3mm；With polyethylene glycol spinning
Solution is inner tube spinning solution, and syringe needle internal diameter is 0.5mm, and outer diameter 0.8mm, the flow velocity of outer tube spinning solution is 1.6mL/h, interior
The flow velocity of pipe spinning solution is 171.2 μ L/h, and stratum nucleare spinning solution and shell spinning solution velocity ratio are 0.107.Use Static Spinning
Silk equipment (SS-2534 type, work in peace and contentment development in science and technology Co., Ltd for Beijing Yongkang) is 25 DEG C in temperature, in the environment of humidity is 10%
Coaxial electrostatic spinning is carried out, cathode voltage 14KV, cathode voltage 2.5KV, syringe needle to the distance for receiving aluminium foil is 15cm.It will
For fiber after spinning in pressure≤- 100KPa, temperature is vacuum drying 12 hours or more, to obtain a kind of polyvinylidene fluoride at 30 DEG C
Alkene-polyethylene glycol coaxial electrostatic spinning silk fiber.
The Kynoar that embodiment 1 obtains-polyethylene glycol coaxial electrostatic spinning silk fiber transmission electron microscope image
As shown in Figure 1.As shown in Figure 1, the Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber has clearly coaxial configuration,
Show preparation method described in the present embodiment, can be formed preferably using polyethylene glycol as sandwich layer, using Kynoar as shell
Coaxial electrostatic spinning silk fiber.The Kynoar that embodiment 2 and embodiment 3 obtain-polyethylene glycol coaxial electrostatic spinning silk fiber
Transmission electron microscope result is similar to Example 1.
The Kynoar that embodiment 1, embodiment 2 and embodiment 3 are obtained-polyethylene glycol coaxial electrostatic spinning silk fiber into
The test of row water contact angle, the results are shown in Table 1, and water contact angle is all larger than 90 DEG C, illustrates the Kynoar-in the embodiment
Polyethylene glycol coaxial electrostatic spinning silk fiber is hydrophobic material.Since polyethylene glycol is water wetted material, Kynoar is hydrophobic material
Material, it is possible thereby to determine the fiber surface polyethylene glycol No leakage of preparation.
Table 1
| Embodiment | Water contact angle (DEG C) |
| 1 | 127.1 |
| 2 | 134.4 |
| 3 | 127.4 |
The Kynoar that embodiment 1, embodiment 2 and embodiment 3 are obtained-polyethylene glycol coaxial electrostatic spinning silk fiber into
The test of row thermal property, as a result as shown in Figure 2.From figure 2 it can be seen that there is faint phase transformation peak to occur at 20~30 DEG C,
60 DEG C or so have apparent phase transformation peak to occur, and show fiber transition temperature range described in embodiment 1, embodiment 2 and embodiment 3
It is larger.The results are shown in Table 2 for the melting enthalpy and clad ratio of the fiber, shows that the fiber has biggish enthalpy of phase change.
Table 2
To embodiment 1, Kynoar described in embodiment 2 and embodiment 3-polyethylene glycol coaxial electrostatic spinning silk fiber into
Row Mechanics Performance Testing, test result is as shown in Fig. 3 and table 3, the Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber
There is excellent mechanical property.
Table 3
The present invention includes but is not limited to above embodiments, it is all carried out under the principle of spirit of that invention it is any equivalent
Replacement or local improvement, all will be regarded as within protection scope of the present invention.
Claims (4)
1. a kind of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber preparation method, it is characterised in that: the method step
It is rapid as follows:
Step 1: at 40~50 DEG C, the polyethylene glycol that molecular weight is 600 and 8000 being mixed, polyethylene glycol blending object is obtained,
The polyethylene glycol that its middle-molecular-weihydroxyethyl is 600 accounts for the 20%~80% of mixture gross mass, and mixture is dissolved in N, N- dimethyl
It in the mixed solvent 1 of acetamide and acetone, is uniformly mixed, obtains the polyethylene glycol that polyethylene glycol mass concentration is 20%~40%
Spinning solution；
Step 2: at 40~50 DEG C, Kynoar is dissolved in the mixed solvent 2 of n,N-dimethylacetamide and acetone
In, it is uniformly mixed, obtains the Kynoar spinning solution that Kynoar mass concentration is 15%~25%；
Step 3: molten as outer tube spinning using Kynoar spinning solution using polyethylene glycol spinning solution as inner tube spinning solution
Liquid, in temperature be 20~40 DEG C, humidity be 10~40% in the environment of, according to inner tube spinning solution and outer tube spinning solution flow velocity
Than carrying out coaxial electrostatic spinning for 0.060~0.110, vacuum drying removal n,N-dimethylacetamide and acetone, are obtained after spinning
To a kind of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber；
Wherein, in mixed solvent 1 and mixed solvent 2, the mass fraction of n,N-dimethylacetamide is each independently 20~40%,
The mass fraction of acetone is each independently 60~80%.
2. a kind of preparation method of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber as described in claim 1, special
Sign is: voltage is 10~18KV when the coaxial electrostatic spinning；Receiving distance is 10~18cm.
3. a kind of preparation method of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber as described in claim 1, special
Sign is: the flow velocity of outer tube spinning solution is 1.6mL/h；The flow velocity of inner tube spinning solution is 106~176 μ L/h.
4. a kind of preparation method of Kynoar-polyethylene glycol coaxial electrostatic spinning silk fiber as described in claim 1, special
Sign is: by the fiber after spinning in pressure≤- 100KPa, temperature is vacuum drying 12 hours or more, to remove N, N- at 30 DEG C
Dimethyl acetamide and acetone.
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| CN110685033A (en) * | 2019-10-11 | 2020-01-14 | 贵州理工学院 | Flexible composite phase change energy storage line and preparation method thereof |
| CN111254519A (en) * | 2020-01-19 | 2020-06-09 | 北京理工大学 | Polyethylene glycol-polycaprolactone phase change fiber and preparation method thereof |
| CN112030354A (en) * | 2020-08-31 | 2020-12-04 | 天津工业大学 | Cool feeling nanofiber with bead string structure and preparation method thereof |
| CN112928389A (en) * | 2021-03-03 | 2021-06-08 | 华中科技大学 | Phase-change temperature-regulating diaphragm and preparation method and application thereof |
| CN114984295A (en) * | 2022-04-14 | 2022-09-02 | 广东云曌医疗科技有限公司 | Porous nano medical dressing and preparation method thereof |
| CN115125629A (en) * | 2022-08-31 | 2022-09-30 | 江苏领智健康科技有限公司 | Textile fiber material with heat storage and temperature adjustment functions and preparation method thereof |
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