CN111945243A - Method for rapidly preparing polyurethane fiber through coaxial electrostatic spinning - Google Patents
Method for rapidly preparing polyurethane fiber through coaxial electrostatic spinning Download PDFInfo
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- CN111945243A CN111945243A CN202010757128.8A CN202010757128A CN111945243A CN 111945243 A CN111945243 A CN 111945243A CN 202010757128 A CN202010757128 A CN 202010757128A CN 111945243 A CN111945243 A CN 111945243A
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- polyurethane
- polyurethane fiber
- injector
- fiber
- electrostatic spinning
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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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The invention belongs to the technical field of electrostatic spinning, and particularly relates to a method for quickly preparing polyurethane fiber by coaxial electrostatic spinning, which comprises the steps of firstly preparing a solution A (comprising polyether glycol, a catalyst and a diluent) and a solution B (comprising diisocyanate and a diluent), respectively injecting the solution A and the solution B into an injector A and an injector B, and then carrying out coaxial electrostatic spinning to obtain the polyurethane fiber; the preparation process is simple, the operation is convenient, the efficiency is high, the polyurethane polymerization and electrostatic spinning processes can be simultaneously completed, and in addition, the ratio of soft and hard sections in the polyurethane fiber can be controlled by adjusting the flow rates of the injector A and the injector B.
Description
Technical Field
The invention belongs to the technical field of electrostatic spinning, and particularly relates to a method for quickly preparing polyurethane fiber through coaxial electrostatic spinning.
Background
Polyurethane is widely applied to various fields of national economy due to its excellent performance, and is known as 'fifth major plastic'. The application field of the product relates to light industry, chemical industry, electronics, textile, medical treatment, building materials, automobiles, national defense, aerospace, aviation and the like. The structural units in the main chain of polyurethane can be divided into soft segments and hard segments according to the molecular structure. The hard segment is a chain segment formed by the reaction of isocyanate, a chain extender and a cross-linking agent on the main chain of a polyurethane molecule, and the cohesive energy of the groups is larger, the space volume is larger and the rigidity is larger; the soft segment is carbon-carbon main chain polymer polyether diol with better flexibility. The invention can design different soft and hard segment structures on the main chain according to the requirement, and the proportion of the soft and hard segments in the polyurethane fiber is controlled by adjusting the flow rates of the injector A and the injector B.
Chinese patent CN104532367A proposes a method for preparing polyurethane fiber by solvent-free electrostatic spinning, isocyanate, polyether diol, a modifier and a catalyst are added into a beaker to react to obtain a polyurethane prepolymer, and then a chain extender is added to be uniformly stirred to carry out electrostatic spinning. Chinese patent CN201510574522.7 proposes a method for preparing waterborne polyurethane nanofibers by electrostatic spinning, which is to blend polyvinyl alcohol and 15% waterborne polyurethane solution uniformly and then carry out electrostatic spinning to prepare the waterborne polyurethane nanofibers. The polyurethane polymerization and electrospinning in the above patents are carried out distributively, and there is no mention of controlling the ratio of soft and hard segments in the polyurethane fiber. The invention can not only simultaneously complete the polyurethane polymerization and electrostatic spinning processes and realize the rapid preparation of polyurethane fiber, but also control the proportion of soft and hard sections in the polyurethane fiber by adjusting the flow rates of the injector A and the injector B, and has simple preparation process, convenient operation and high efficiency.
Disclosure of Invention
The invention provides a method for quickly preparing polyurethane fiber by coaxial electrostatic spinning, which has the advantages of simple preparation process, convenient operation and high efficiency, can simultaneously complete polyurethane polymerization and electrostatic spinning processes, and can control the proportion of soft and hard sections in the polyurethane fiber by adjusting the flow rates of an injector A and an injector B.
A method for quickly preparing polyurethane fibers by coaxial electrostatic spinning comprises the following specific steps:
1) adding polyether glycol, a catalyst and a diluent into a container in proportion, and then uniformly stirring to obtain a prepared solution A.
2) Adding diisocyanate and a diluent into a container in proportion, uniformly stirring, and storing at low temperature to obtain a prepared solution B.
3) Injecting the solution A into an injector A, injecting the solution B into an injector B, respectively installing the two injectors on two micro-injection pumps, connecting tetrafluoro sleeves at outlets of the injector A and the injector B and connecting the tetrafluoro sleeves with needles of the injectors, then switching on a power supply to carry out electrostatic spinning, controlling the proportion of soft and hard sections in polyurethane fibers by adjusting the flow rates of the injector A and the injector B, receiving the polyurethane fibers on a receiving device with adjustable temperature, and accelerating polyurethane polymerization reaction and fiber curing process.
Further, the simultaneous completion of the polyurethane polymerization and the electrostatic spinning process means that the diisocyanate and the polyether diol can rapidly perform polyurethane polymerization reaction and simultaneously perform electrostatic spinning to realize rapid preparation of polyurethane fibers.
Further, the control of the proportion of the soft and hard segments in the polyurethane fiber by adjusting the flow rates of the syringe A and the syringe B means that the adjustment of the flow rates of the solution A and the solution B can change the content of hydroxyl and isocyanate groups in the unit volume of the syringe needle, so that the proportion of the soft and hard segments in the polyurethane fiber is controlled.
Further, the polyether glycol comprises one or more of polyethylene glycol, polypropylene glycol and the like.
Further, the catalyst comprises one or more of triethylamine, triethylene diamine, stannous octoate, dibutyltin dilaurate and the like.
Further, the diluent comprises one or more of N, N-dimethylformamide, N-dimethylacetamide, tetrahydrofuran and the like.
Further, the diisocyanate comprises one or more of toluene diisocyanate, ethylbenzene diisocyanate, hexamethylene diisocyanate and the like.
Furthermore, the syringe needle is connected with the syringe needle at the outlets of the syringe A and the syringe B and is connected with the positive pole of the high-voltage power supply through a lead.
Furthermore, the receiving device is a roller receiver and is connected with the negative electrode of the high-voltage power supply, the temperature of the roller receiver is adjustable, so that the polyurethane polymerization reaction and the fiber curing process can be accelerated, and the orderly-arranged polyurethane fibers can be obtained by adjusting the rotating speed of the roller.
The invention has the beneficial effects that: the invention provides a method for preparing polyurethane fiber by coaxial electrostatic spinning, which can complete polyurethane polymerization and electrostatic spinning processes at the same time; secondly, the preparation process is simple, the operation is convenient, the efficiency is high, and the proportion of soft and hard sections in the polyurethane fiber can be controlled by adjusting the flow rates of the injector A and the injector B.
Drawings
FIG. 1 is a schematic view of a coaxial electrospinning device according to the present invention
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a method for quickly preparing polyurethane fibers by coaxial electrostatic spinning, which specifically comprises the following steps:
1) respectively adding polyethylene glycol 600, dibutyltin dilaurate serving as a catalyst and a mixed solvent of tetrahydrofuran serving as a diluent and N, N-dimethylformamide in a volume ratio of 1:2 into a container according to a mass ratio of 32:1:402, and then uniformly stirring to obtain a prepared solution A.
2) Adding a mixed solvent of diphenylmethane diisocyanate, a diluent tetrahydrofuran and N, N-dimethylformamide in a volume ratio of 1:2 into a container according to a mass ratio of 2:402, uniformly stirring, and storing at low temperature to obtain a prepared solution B.
3) Injecting the solution A into an injector A, injecting the solution B into an injector B, respectively installing the two injectors on two micro-injection pumps, connecting the two injectors at outlets of the injector A and the injector B by using tetrafluoro sleeves, adjusting the distance between a needle head of the injector and a receiving device to be 15cm, adjusting the voltage of a high-voltage power supply to be 18kv, the temperature of the receiving device to be 50 ℃, the flow rate of the injector A to be 1.2ml/h and the flow rate of the injector B to be 1.5ml/h, then switching on the power supply to carry out electrostatic spinning, and receiving polyurethane fibers on the receiving device.
Claims (9)
1. A method for preparing polyurethane fiber rapidly by coaxial electrostatic spinning is characterized in that polyurethane polymerization and electrostatic spinning processes can be completed simultaneously to realize rapid preparation of polyurethane fiber, and the preparation method comprises the following specific steps:
1) adding polyether glycol, a catalyst and a diluent into a container in proportion, and then uniformly stirring to obtain a prepared solution A;
2) adding diisocyanate and a diluent into a container in proportion, uniformly stirring, and storing at low temperature to obtain a prepared solution B;
3) injecting the solution A into an injector A, injecting the solution B into an injector B, respectively installing the two injectors on two micro-injection pumps, connecting tetrafluoro sleeves at outlets of the injector A and the injector B and connecting the tetrafluoro sleeves with needles of the injectors, then switching on a power supply to carry out electrostatic spinning, controlling the proportion of soft and hard sections in polyurethane fibers by adjusting the flow rates of the injector A and the injector B, receiving the polyurethane fibers on a receiving device with adjustable temperature, and accelerating polyurethane polymerization reaction and fiber curing process.
2. The method for rapidly preparing polyurethane fiber by coaxial electrospinning according to claim 1, wherein the simultaneous completion of polyurethane polymerization and electrospinning is characterized in that the diisocyanate and polyether diol can rapidly undergo polyurethane polymerization reaction and electrospinning simultaneously to achieve rapid preparation of polyurethane fiber.
3. The method for rapidly preparing polyurethane fiber through coaxial electrospinning according to claim 1, wherein the controlling of the ratio of soft and hard segments in the polyurethane fiber by adjusting the flow rates of the syringe A and the syringe B means that adjusting the flow rates of the solution A and the solution B changes the content of hydroxyl groups and isocyanate groups per unit volume in the syringe needle, thereby controlling the ratio of soft and hard segments in the polyurethane fiber.
4. The method for rapidly preparing polyurethane fiber by coaxial electrospinning according to claim 1, wherein the polyether glycol comprises one or more of polyethylene glycol, polypropylene glycol and the like.
5. The method for rapidly preparing the polyurethane fiber by the coaxial electrospinning according to claim 1, wherein the catalyst comprises one or more of triethylamine, triethylenediamine, stannous octoate, dibutyltin dilaurate and the like.
6. The method for rapidly preparing polyurethane fiber by coaxial electrospinning according to claim 1, wherein the diluent comprises one or more of N, N-dimethylformamide, N-dimethylacetamide, tetrahydrofuran, and the like.
7. The method for rapidly preparing the polyurethane fiber by the coaxial electrospinning according to claim 1, wherein the diisocyanate comprises one or more of toluene diisocyanate, ethylbenzene diisocyanate, hexamethylene diisocyanate, and the like.
8. The method for rapidly preparing polyurethane fiber by coaxial electrospinning according to claim 1, wherein the syringe needle is connected to the outlets of the syringe A and the syringe B and connected to the positive electrode of the high voltage power supply through a lead.
9. The method for rapidly preparing polyurethane fiber through coaxial electrospinning according to claim 1, wherein the receiving device is a roller receiver, the roller receiver is connected with a negative electrode of a high-voltage power supply, the temperature of the roller receiver is adjustable, so that polyurethane polymerization reaction and fiber curing process can be accelerated, and the polyurethane fiber in ordered arrangement can be obtained by adjusting the rotating speed of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757128.8A CN111945243B (en) | 2020-07-31 | 2020-07-31 | Method for quickly preparing polyurethane fiber through coaxial electrostatic spinning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757128.8A CN111945243B (en) | 2020-07-31 | 2020-07-31 | Method for quickly preparing polyurethane fiber through coaxial electrostatic spinning |
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| CN111945243A true CN111945243A (en) | 2020-11-17 |
| CN111945243B CN111945243B (en) | 2022-11-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318264A (en) * | 2021-05-28 | 2021-08-31 | 瑞聚再生(厦门)医学科技有限公司 | Degradable polyurethane biomaterial and preparation method and application thereof |
| CN114517347A (en) * | 2022-03-11 | 2022-05-20 | 江南大学 | Intelligent yarn preparation device and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090093606A1 (en) * | 2007-10-09 | 2009-04-09 | The Hong Kong Polytechnic University | Shape memory fibers prepared via wet, reaction, dry, melt, and electro spinning |
| CN101994162A (en) * | 2010-12-10 | 2011-03-30 | 江南大学 | Microfluid electrostatic spinning device |
| CN104532367A (en) * | 2014-12-19 | 2015-04-22 | 青岛大学 | Method for manufacturing polyurethane micro-nanofibers through solvent-free electrostatic spinning |
| CN107629187A (en) * | 2017-09-20 | 2018-01-26 | 四川大学 | A kind of insoluble controllable method for preparing polyurethane elastic body of water-soluble water |
-
2020
- 2020-07-31 CN CN202010757128.8A patent/CN111945243B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090093606A1 (en) * | 2007-10-09 | 2009-04-09 | The Hong Kong Polytechnic University | Shape memory fibers prepared via wet, reaction, dry, melt, and electro spinning |
| CN101994162A (en) * | 2010-12-10 | 2011-03-30 | 江南大学 | Microfluid electrostatic spinning device |
| CN104532367A (en) * | 2014-12-19 | 2015-04-22 | 青岛大学 | Method for manufacturing polyurethane micro-nanofibers through solvent-free electrostatic spinning |
| CN107629187A (en) * | 2017-09-20 | 2018-01-26 | 四川大学 | A kind of insoluble controllable method for preparing polyurethane elastic body of water-soluble water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318264A (en) * | 2021-05-28 | 2021-08-31 | 瑞聚再生(厦门)医学科技有限公司 | Degradable polyurethane biomaterial and preparation method and application thereof |
| CN114517347A (en) * | 2022-03-11 | 2022-05-20 | 江南大学 | Intelligent yarn preparation device and preparation method thereof |
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| CN111945243B (en) | 2022-11-22 |
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