CN114959943A - Thermoplastic polyurethane elastic fiber, manufacturing method and fabric containing same - Google Patents
Thermoplastic polyurethane elastic fiber, manufacturing method and fabric containing same Download PDFInfo
- Publication number
- CN114959943A CN114959943A CN202110410229.2A CN202110410229A CN114959943A CN 114959943 A CN114959943 A CN 114959943A CN 202110410229 A CN202110410229 A CN 202110410229A CN 114959943 A CN114959943 A CN 114959943A
- Authority
- CN
- China
- Prior art keywords
- thermoplastic polyurethane
- elastic fiber
- polyurethane elastic
- manufacturing
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004433 Thermoplastic polyurethane Substances 0.000 title claims abstract description 251
- 229920002803 thermoplastic polyurethane Polymers 0.000 title claims abstract description 251
- 210000004177 elastic tissue Anatomy 0.000 title claims abstract description 118
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 55
- 239000004744 fabric Substances 0.000 title claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 47
- 229920001971 elastomer Polymers 0.000 claims abstract description 43
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 16
- 239000003086 colorant Substances 0.000 claims description 15
- 239000007863 gel particle Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims 3
- 239000002351 wastewater Substances 0.000 claims 1
- 238000002074 melt spinning Methods 0.000 description 12
- 239000004814 polyurethane Substances 0.000 description 12
- 229920002635 polyurethane Polymers 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 10
- 238000004043 dyeing Methods 0.000 description 9
- 230000000704 physical effect Effects 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 7
- 238000000578 dry spinning Methods 0.000 description 6
- 229920006306 polyurethane fiber Polymers 0.000 description 6
- 229920002209 Crumb rubber Polymers 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000013538 functional additive Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000009987 spinning Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004383 yellowing Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000000693 micelle Substances 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- -1 polyol ester Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- 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
- D01D5/08—Melt spinning methods
-
- 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
- D01D5/12—Stretch-spinning methods
-
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/04—Pigments
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Artificial Filaments (AREA)
- Woven Fabrics (AREA)
- Laminated Bodies (AREA)
Abstract
The application discloses a thermoplastic polyurethane elastic fiber, a manufacturing method thereof and a fabric containing the same. The method for manufacturing the thermoplastic polyurethane elastic fiber comprises the following steps: providing thermoplastic polyurethane rubber particles, wherein the Shore hardness of the thermoplastic polyurethane rubber particles is 45D-80D; and melting the thermoplastic polyurethane colloidal particles to obtain a thermoplastic polyurethane elastic fiber. The thermoplastic polyurethane elastic fiber prepared by the method for preparing the thermoplastic polyurethane elastic fiber has better physical characteristics and can be suitable for higher production speed.
Description
Technical Field
The present invention relates to a thermoplastic polyurethane elastic fiber and a method for manufacturing the same, and a fabric comprising the same, and more particularly, to a thermoplastic polyurethane elastic fiber having high fiber strength and a method for manufacturing the same, and a fabric comprising the same.
Background
Polyurethane (PU) fibers are usually produced by dry spinning. In the dry spinning process, monomers required for synthesizing polyurethane are prepared in a synthesis tank, and the monomers are polymerized to form polyurethane. And then dissolving polyurethane with a solvent to form a spinning solution, forming the spinning solution through an extruder and a die orifice, introducing the spinning solution into heated gas, volatilizing the solvent in the spinning solution at high temperature to form polyurethane filaments, and stretching, shaping, washing and drying the polyurethane filaments to obtain the polyurethane fiber.
However, the conventional dry spinning (dry spinning) method requires a large amount of solvent in the process, which raises many environmental concerns. In addition, since the polyurethane is subjected to a solvent dissolution step after synthesis, the physical properties of the resulting polyurethane fiber are poor. In addition, the poor physical properties of the polyurethane fibers can cause that the polyurethane fibers cannot bear high tension, the production speed cannot be increased, and otherwise, yarn breakage is easily caused. Therefore, the prior art methods for producing polyurethane fibers still remain to be improved.
Disclosure of Invention
The present invention provides a thermoplastic polyurethane elastic fiber, a manufacturing method thereof and a fabric comprising the same, which are directed to overcome the disadvantages of the prior art.
In order to solve the above technical problems, one of the technical solutions adopted in the present application is to provide a method for manufacturing a thermoplastic polyurethane elastic fiber. The manufacturing method of the thermoplastic polyurethane elastic fiber comprises the following steps: providing thermoplastic polyurethane rubber particles, wherein the Shore hardness of the thermoplastic polyurethane rubber particles is 45D-80D; and melting the thermoplastic polyurethane colloidal particles to obtain the thermoplastic polyurethane elastic fiber.
Further, the thermoplastic polyurethane elastic fiber is produced at a production speed of 1200 m/min to 6000 m/min.
Further, the method for manufacturing the thermoplastic polyurethane elastic fiber further comprises: subjecting the obtained thermoplastic polyurethane elastic fiber to an elongation treatment at a temperature of 50 to 150 ℃.
Further, the draw ratio of the drawing treatment is 1.0 to 4.0 times.
Further, the method for manufacturing the thermoplastic polyurethane elastic fiber further comprises: and (3) carrying out a shaping treatment on the prepared thermoplastic polyurethane elastic fiber, wherein the shaping treatment is carried out at the temperature of 50-150 ℃.
Further, the treating temperature of the setting treatment is 5 to 20 ℃ higher than the treating temperature of the elongation treatment.
Further, the thermoplastic polyurethane rubber particle comprises 0.1 to 4 weight percent of a colorant based on the total weight of the thermoplastic polyurethane rubber particle being 100 weight percent.
Further, the thermoplastic polyurethane crumb comprises a conventional thermoplastic polyurethane crumb and a colored thermoplastic polyurethane crumb, the colored thermoplastic polyurethane crumb comprising a colorant.
Further, after melting the thermoplastic polyurethane gel particles, the thermoplastic polyurethane elastic fiber is produced by a melt extruder having a set temperature of 150 ℃ to 250 ℃.
Furthermore, the thermoplastic polyurethane crumb is prepared from thermoplastic polyurethane as a single major component.
Further, the thermoplastic polyurethane crumb is made from a thermoplastic polyurethane having a weight average molecular weight of 30000 to 450000.
Still further, another technical solution adopted by the present application is to provide a polyurethane elastic fiber.
Furthermore, the polyurethane elastic fiber is prepared by the manufacturing method of the thermoplastic polyurethane elastic fiber, and the thermoplastic polyurethane elastic fiber has a Shore hardness of 45D to 80D.
Further, the thermoplastic polyurethane elastic fiber has a fiber strength of greater than 2.0 cN/F.
Still further, the thermoplastic polyurethane elastic fiber has an elongation of 80% or less.
Further, the thermoplastic polyurethane elastic fiber has a boiling water shrinkage of 30% or less.
In order to solve the above technical problem, another technical solution adopted in the present application is to provide a polyurethane elastic fiber fabric. The polyurethane elastic fiber fabric is obtained by weaving the thermoplastic polyurethane elastic fiber.
One of the advantages of the present application is that the technical solution of "said thermoplastic polyurethane colloidal particles comprise a conventional thermoplastic polyurethane colloidal particle and a colored thermoplastic polyurethane colloidal particle, said colored thermoplastic polyurethane colloidal particle comprises said colorant" is used to solve the problem that the thermoplastic polyurethane elastic fiber is not easy to dye.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
FIG. 1 is a flow chart of a method for manufacturing the thermoplastic polyurethane elastic fiber of the present invention.
FIG. 2 is a schematic front view of a melt spinning machine.
FIG. 3 is a schematic side view of the rolling machine of FIG. 2 after rolling.
Detailed Description
The following is a description of the embodiments of the thermoplastic polyurethane elastic fiber and the manufacturing method thereof and the fabric comprising the same, which are disclosed in the present application, by specific examples, and those skilled in the art can understand the advantages and effects of the present application from the disclosure of the present application. The present application is capable of other and different embodiments and its several details are capable of modifications and variations in various respects, all without departing from the present application. The drawings in the present application are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further describe the related technical content of the present application in detail, but the disclosure is not intended to limit the scope of the present application. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
In order to overcome the problems that a large amount of solvent is required to be used, the physical properties of the thermoplastic polyurethane elastic fiber are not good and the production speed cannot be improved when a dry spinning method is used in the prior art, the application provides a method for manufacturing the thermoplastic polyurethane elastic fiber. In the whole process, no solvent is needed, and the thermoplastic polyurethane elastic fiber can be manufactured at higher production speed. In addition, the prepared thermoplastic polyurethane elastic fiber has better physical properties.
After the thermoplastic polyurethane is synthesized, the thermoplastic polyurethane is directly heated and melted without adding a solvent to dissolve the thermoplastic polyurethane, and then is reshaped. Thus, the physical properties of the thermoplastic polyurethane itself can be maintained without being degraded by the solvent dissolving step.
The molten thermoplastic polyurethane is formed through an extruder and a die orifice, and the thermoplastic polyurethane elastic fiber can be obtained after cooling, and the thermoplastic polyurethane elastic fiber prepared by the method has good physical properties. Therefore, the production speed of the thermoplastic polyurethane elastic fiber can be improved, and the problem of yarn breakage can not be caused.
Referring to fig. 1 and 2, fig. 1 is a flow chart illustrating a method of manufacturing a thermoplastic polyurethane elastic fiber according to the present application; fig. 2 shows a schematic front view of a melt spinning machine.
The method for producing the thermoplastic polyurethane elastic fiber of the present application comprises the following steps. A Thermoplastic Polyurethane (TPU) rubber pellet is provided (step S1). Then, the thermoplastic polyurethane colloidal particles are put into a feeding groove 1 of a melt spinning machine, the thermoplastic polyurethane colloidal particles are conveyed to a heating area 2 through a screw, and the thermoplastic polyurethane colloidal particles are heated by a heating sheet to form molten thermoplastic polyurethane. The molten thermoplastic polyurethane is passed through a screen and finally fed through the feed pipe 3 to the spinning box 4, and a thermoplastic polyurethane elastic fiber is produced (step S2).
Since the thermoplastic polyurethane can be shaped in the melt, the use of solvents can be eliminated and the step of dissolving the thermoplastic polyurethane with a solvent can be omitted. Therefore, in selecting the material of the thermoplastic polyurethane, the solubility of the thermoplastic polyurethane in a solvent does not need to be taken into consideration, and the thermoplastic polyurethane with higher molecular weight or higher hardness can be selected as the raw material.
In step S1, the shore hardness of the thermoplastic polyurethane rubber particles is 45D to 80D, and the thermoplastic polyurethane rubber particles have higher structural strength to withstand various temperature changes and tensile deformation during the manufacturing process due to higher hardness.
In some embodiments herein, the thermoplastic polyurethane crumb has a melting point of 150 ℃ to 250 ℃; preferably, the melting point of the thermoplastic polyurethane rubber particles is 170-250 ℃; more preferably, the melting point of the thermoplastic polyurethane crumb is from 170 ℃ to 220 ℃.
In some embodiments herein, the thermoplastic polyurethane crumb has a weight average molecular weight of from 30000 g/mole to 450000 g/mole; preferably, the weight average molecular weight of the thermoplastic polyurethane crumb is from 35000 g/mole to 400000 g/mole; more preferably, the thermoplastic polyurethane crumb has a weight average molecular weight of from 40000 g/mole to 400000 g/mole.
In some embodiments herein, the thermoplastic polyurethane crumb has an Intrinsic Viscosity (IV) of from 0.5 to 3.0; preferably, the intrinsic viscosity of the thermoplastic polyurethane gel particles is 0.5 to 2.5; more preferably, the intrinsic viscosity of the thermoplastic polyurethane crumb is from 1.0 to 2.0.
Further, in some embodiments herein, the thermoplastic polyurethane crumb is made from thermoplastic polyurethane as a single major component, by "single major component" is meant that the content of thermoplastic polyurethane in conventional thermoplastic polyurethane crumb is greater than or equal to 75 weight percent.
Preferably, the thermoplastic polyurethane rubber particles only contain one polymer of the thermoplastic polyurethane, and do not contain other polymers (such as nylon, polyester and the like). Thus, the thermoplastic polyurethane elastic fiber and the thermoplastic polyurethane elastic fabric made of the thermoplastic polyurethane crumb are also formed from a single component. Once the product is consumed, the components are single, so the product can be directly recycled.
Specifically, the material of the formed thermoplastic polyurethane micelle can be polyether type thermoplastic polyurethane or polyester type thermoplastic polyurethane, and the aging resistance can reach more than 4 grades (the fiber strength of more than 60 percent can be still maintained under the environment that the temperature is 70 ℃ and the relative humidity is 95 percent for 14 days). Since the polyester thermoplastic polyurethane is more susceptible to yellowing (yellowing), an ultraviolet absorber may be optionally added to the polyester thermoplastic polyurethane to reduce the yellowing, and the manner of adding the ultraviolet absorber will be described in detail later.
The thermoplastic polyurethane crumb rubber of the present application has better physical properties and is therefore suitable for higher production speeds to increase the yield of thermoplastic polyurethane elastic fibers. In step S2, the thermoplastic polyurethane elastic fiber is produced at a production speed of 1200 m/min to 6000 m/min; preferably, the thermoplastic polyurethane elastic fiber is prepared at a production speed of 1500 meters/minute to 3000 meters/minute; more preferably, the thermoplastic polyurethane elastic fiber is produced at a production rate of 2000 m/min to 3000 m/min. Generally, the conventional dry spinning process usually produces fibers at a production speed of 600 m/min to 1000 m/min, so as to avoid filament breakage. Therefore, the method for producing thermoplastic polyurethane elastic fibers of the present application can solve the problem that the production rate cannot be increased in the conventional production method.
In some embodiments of the present application, the melt spinning machine has a take-up tension of 0.05cN/F to 0.50cN/F to avoid breaking of the thermoplastic polyurethane elastic fiber. Preferably, the melt spinning machine has a take-up tension of 0.08cN/F to 0.35 cN/F. More preferably, the melt spinning machine has a take-up tension of 0.10cN/F to 0.35 cN/F.
In some embodiments of the present application, the melt spinning machine is set to a temperature of 150 ℃ to 300 ℃. Preferably, the set temperature of the melt spinning machine is 180 ℃ to 300 ℃. More preferably, the set temperature of the melt spinning machine is 180 ℃ to 250 ℃.
In some embodiments of the present application, the gear pump (gear pump) in the melt spinning machine is set at a temperature of 200 ℃ to 300 ℃ to avoid clogging of the raw material and resulting instrument damage. Preferably, the gear pump in the melt spinning machine is set at a temperature of 200 ℃ to 280 ℃. More preferably, the gear pump in the melt spinning machine is set to a temperature of 200 ℃ to 250 ℃.
After the thermoplastic polyurethane elastic fiber is formed, oil with the concentration of 3 to 20 weight percent is sprayed on the thermoplastic polyurethane elastic fiber through an oil nozzle to reduce the friction force between the thermoplastic polyurethane elastic fibers, and then the thermoplastic polyurethane elastic fibers are collected into a bundle. After oiling, the actual oil concentration on the thermoplastic polyurethane elastic fiber is 0.3 to 3.0 weight percent.
For example, a 20 weight percent oil is comprised of 20 grams of oil and 80 grams of water. The oil agent may be an emulsified oil agent containing a silicon component, or an emulsified oil agent containing a polyol ester component. Preferably, the oil agent is an emulsified oil agent containing a silicon component.
Referring to fig. 1 and 2, the method for manufacturing the thermoplastic polyurethane elastic fiber according to the present invention further includes a step of stretching the thermoplastic polyurethane elastic fiber to adjust the size and fiber density (fiber density) of the thermoplastic polyurethane elastic fiber.
In some embodiments of the present application, the extension process is performed at a temperature of 50 ℃ to 150 ℃ (step S3). Preferably, the extension treatment is carried out at a temperature of 75 ℃ to 125 ℃.
In the stretching process, the temperature of the first roller (roller)51 is controlled to heat the thermoplastic polyurethane elastic fiber to soften the thermoplastic polyurethane elastic fiber. After softening the thermoplastic polyurethane elastic fiber, the draw ratio of the thermoplastic polyurethane elastic fiber can be controlled by adjusting the rotation speed ratio of the first roller 51 to the second roller 52. In the stretching process, the thermoplastic polyurethane elastic fiber is continuously stretched between the first roller 51 and the second roller 52, and the stretching process is completed when the thermoplastic polyurethane elastic fiber completely passes through the second roller 52.
In some embodiments of the present application, the draw ratio of the drawing process is greater than 1.0 to 4.0 times, i.e., the rotation speed of the second roller 52 is greater than 1.0 to 4.0 times the rotation speed of the first roller 51. In practical application, the stretch ratio of the thermoplastic polyurethane elastic fiber can be adjusted according to the final requirement specification of the product.
For example, when the rotation speed of the second drum 52 is 4.0 times the rotation speed of the first drum 51, the density of the thermoplastic polyurethane elastic fiber after the stretching process is 0.25 times the density of the thermoplastic polyurethane elastic fiber before the stretching process, and the length of the thermoplastic polyurethane elastic fiber after the stretching process is 4.0 times the length of the thermoplastic polyurethane elastic fiber before the stretching process.
The method for manufacturing the thermoplastic polyurethane elastic fiber of the present application further includes the step of subjecting the thermoplastic polyurethane elastic fiber subjected to the drawing treatment to a sizing treatment at a temperature of 50 ℃ to 150 ℃, the temperature in the sizing treatment being higher than that in the drawing treatment by 5 ℃ to 20 ℃ (step S4). Preferably, the setting treatment is carried out at a temperature of 55 ℃ to 150 ℃.
In the sizing process, the number of rotations of the third drum 53 and the fourth drum 54 is the same as that of the second drum 52 in the extension process, with the difference that: the temperature of the third and fourth rolls 53 and 54 in the setting process is controlled to be slightly higher than the temperature of the first and second rolls 51 and 52 in the extension process (slightly higher than 5 ℃ to 20 ℃).
In the setting process, the thermoplastic polyurethane elastic fiber is softened again due to the temperature rise again, thereby releasing the stress stored in the thermoplastic polyurethane elastic fiber during the stretching process.
After the stretching treatment and the setting treatment, the thermoplastic polyurethane elastic fiber is wound up by a winder 6, and the preparation of the thermoplastic polyurethane elastic fiber is completed.
Referring to fig. 3, fig. 3 is a schematic side view of the rolling machine of fig. 2 after rolling. In some embodiments, the traverse angle θ (winding-on angle) of the winding machine 6 is 4 ° to 8 °. However, the present application is not limited thereto.
The thermoplastic polyurethane elastic fiber of the present application may have a fiber strength of greater than 2 grams per denier (g/d) as measured; preferably, the thermoplastic polyurethane elastic fiber has a fiber strength of 2 g/denier to 10 g/denier; more preferably, the thermoplastic polyurethane elastic fiber has a fiber strength of 2 g/denier to 5 g/denier. The thermoplastic polyurethane elastic fiber has an elongation of 80% or less; preferably, the thermoplastic polyurethane elastic fiber has an elongation of 60% or less; more preferably, the thermoplastic polyurethane elastic fiber has an elongation of 50% or less. The boiling water shrinkage of the thermoplastic polyurethane elastic fiber is less than or equal to 30 percent; preferably, the thermoplastic polyurethane elastic fiber has a boiling water shrinkage of 20% or less.
Further, the rolled thermoplastic polyurethane elastic fiber may be subjected to other processes to obtain a semi-drawn yarn (POY), a Fully Drawn Yarn (FDY) and a Draw Textured Yarn (DTY). However, the present application is not limited thereto.
Also, the bulkiness of the thermoplastic polyurethane elastic fiber may be increased by a false twisting machine, or the elasticity of the thermoplastic polyurethane elastic fiber may be increased by a draw twisting machine. Thus, the thermoplastic polyurethane elastic fiber can be applied more widely.
In addition, the thermoplastic polyurethane elastic fibers can be woven into thermoplastic polyurethane fabrics by some weaving techniques. The thermoplastic polyurethane fabric made of the thermoplastic polyurethane elastic fiber also has the advantages of good physical properties and direct recycling.
It is to be noted that the method for producing the thermoplastic polyurethane elastic fiber of the present invention can also be carried out by dyeing the thermoplastic polyurethane elastic fiber simultaneously with the production of the thermoplastic polyurethane elastic fiber, and the conventional dyeing process for the fiber or fabric can be omitted.
Generally, the dyeing process is to soak the fiber or fabric in a high temperature colorant solution for 30 to 60 minutes, and after the fiber or fabric is colored, the fiber or fabric is washed and dried to complete the dyeing process. Crystalline polymers (e.g., polyesters) are often dyed by the above-described steps. However, the dyeing procedure described above does not provide good dyeing results for non-crystalline polymers (e.g., polyurethane). Therefore, no good dyeing method for polyurethane fibers is available in the prior art.
In some embodiments of the present application, the thermoplastic polyurethane crumb rubber comprises a conventional thermoplastic polyurethane crumb rubber and a colored thermoplastic polyurethane crumb rubber. The conventional thermoplastic polyurethane crumb is a crumb formed solely from thermoplastic polyurethane without the inclusion of a colorant. The colorful thermoplastic polyurethane colloidal particles refer to colloidal particles, the main component of which is thermoplastic polyurethane, and pigments are dispersed in the thermoplastic polyurethane.
Thus, when the thermoplastic polyurethane rubber particles are mixed and melted, they have the same color as the color of the color thermoplastic polyurethane rubber particles. After the above steps S2 to S4, the elastic thermoplastic polyurethane fiber having the same color as the colored thermoplastic polyurethane gel particles can be obtained without performing a separate dyeing process.
Specifically, the total weight of the thermoplastic polyurethane rubber particles (including the conventional thermoplastic polyurethane rubber particles and the colored thermoplastic polyurethane rubber particles) is 100 wt%, and the thermoplastic polyurethane rubber particles include 0.1 to 4 wt% of the colorant. Preferably, the thermoplastic polyurethane rubber particles comprise 0.2 to 3 weight percent of pigment. More preferably, the thermoplastic polyurethane rubber particles comprise 0.3 to 1.5 weight percent of pigment.
And, the total weight of the thermoplastic polyurethane rubber particles (including the conventional thermoplastic polyurethane rubber particles and the colored thermoplastic polyurethane rubber particles) is 100 weight percent, and the addition amount of the colored thermoplastic polyurethane rubber particles is 1 to 15 weight percent, and can be adjusted according to the difference of the coloring material. Preferably, the colored thermoplastic polyurethane crumb rubber is added in an amount of 1 to 12 weight percent. More preferably, the colored thermoplastic polyurethane rubber particles are added in an amount of 1 to 10% by weight.
In some embodiments, the colorant may be a white colorant, such as: titanium dioxide particles, calcium carbonate particles or barium sulfate particles. After the addition of the white thermoplastic polyurethane crumb, the white colorant is present in an amount of 0.1 to 4 weight percent of the total thermoplastic polyurethane crumb.
In other embodiments, the colorant may be a black colorant, such as: graphite powder, carbon nano-tube or graphene. After the black thermoplastic polyurethane crumb was added, the black colorant was contained in an amount of 0.1 to 4 weight percent in the entire thermoplastic polyurethane crumb.
In addition, in some embodiments of the present application, the conventional thermoplastic polyurethane crumb is made from thermoplastic polyurethane as a single main component, and the colored thermoplastic polyurethane crumb is made from thermoplastic polyurethane and a colorant as components. And, the materials of the conventional thermoplastic polyurethane crumb and the materials of the colored thermoplastic polyurethane crumb do not contain other types of polymers (e.g., nylon, polyester, etc.). Therefore, the thermoplastic polyurethane elastic fiber and the thermoplastic polyurethane elastic fabric prepared from the thermoplastic polyurethane colloidal particles can be directly recycled.
In addition, in some embodiments of the present application, the thermoplastic polyurethane rubber particles may further include a functional thermoplastic polyurethane rubber particle, where the functional thermoplastic polyurethane rubber particle refers to a rubber particle in which the main component is thermoplastic polyurethane and a functional additive is dispersed in the thermoplastic polyurethane.
For example, the functional additive may be a uv absorber, the addition of which delays yellowing of the thermoplastic polyurethane, particularly for polyester-based thermoplastic polyurethanes.
Specifically, the functional thermoplastic polyurethane crumb includes 0.1 to 4 weight percent of the functional additive, based on the total weight of the functional thermoplastic polyurethane crumb being 100 weight percent. Preferably, the functional thermoplastic polyurethane rubber particle comprises 0.2 to 3 weight percent of functional additive. More preferably, the functional thermoplastic polyurethane rubber particles comprise 0.3 weight percent to 1.5 weight percent of the functional additive ratio.
And the total weight of the thermoplastic polyurethane colloidal particles is 100 weight percent, and the adding amount of the functional thermoplastic polyurethane colloidal particles is 1 weight percent to 15 weight percent. Preferably, the addition amount of the functional thermoplastic polyurethane crumb is 1 to 12 weight percent. More preferably, the addition amount of the functional thermoplastic polyurethane colloidal particles is 1 to 10 weight percent.
Therefore, the method for manufacturing the thermoplastic polyurethane elastic fiber can finish the dyeing process while preparing the thermoplastic polyurethane elastic fiber, so as to save the whole process time.
[ advantageous effects of the embodiments ]
One of the beneficial effects of this application lies in, the thermoplastic polyurethane elastic fiber that this application provided and manufacturing method and contain its fabric, it can be through "the shore hardness of thermoplastic polyurethane micelle is 45D to 80D" and "melting the thermoplastic polyurethane micelle to make the technical scheme of a thermoplastic polyurethane elastic fiber", in order to solve the not good problem of thermoplastic polyurethane elastic fiber physical property, and can have higher production speed.
Furthermore, the technical scheme of the invention that the thermoplastic polyurethane rubber particles comprise a conventional thermoplastic polyurethane rubber particle and a colored thermoplastic polyurethane rubber particle, and the colored thermoplastic polyurethane rubber particle comprises the pigment is adopted to solve the problem that the thermoplastic polyurethane elastic fiber is not easy to dye.
The disclosure is only a preferred embodiment of the invention, and is not intended to limit the scope of the claims, so that all technical equivalents and modifications using the contents of the specification and drawings are included in the scope of the claims.
Claims (16)
1. A method for producing a thermoplastic polyurethane elastic fiber, characterized in that the method for producing a thermoplastic polyurethane elastic fiber comprises:
providing thermoplastic polyurethane rubber particles, wherein the Shore hardness of the thermoplastic polyurethane rubber particles is 45D-80D; and
melting the thermoplastic polyurethane colloidal particles to obtain a thermoplastic polyurethane elastic fiber.
2. The manufacturing method according to claim 1, wherein the thermoplastic polyurethane elastic fiber is manufactured at a production speed of 1200 m/min to 6000 m/min.
3. The manufacturing method according to claim 1, wherein the manufacturing method of the thermoplastic polyurethane elastic fiber further comprises:
subjecting the thermoplastic polyurethane elastic fiber to an elongation treatment at a temperature of 50 ℃ to 150 ℃.
4. The manufacturing method according to claim 3, wherein the draw ratio of the drawing process is 1.0 to 4.0 times.
5. The manufacturing method according to claim 3, wherein the manufacturing method of the thermoplastic polyurethane elastic fiber further comprises:
and (3) carrying out shaping treatment on the stretched thermoplastic polyurethane elastic fiber at the temperature of 50-150 ℃.
6. The manufacturing method according to claim 5, wherein a treatment temperature of the setting treatment is 5 ℃ to 20 ℃ higher than a treatment temperature of the stretching treatment.
7. The method for manufacturing the thermoplastic polyurethane elastomer according to claim 1, wherein the thermoplastic polyurethane elastomer comprises 0.1 to 4 wt% of a colorant, based on 100 wt% of the total weight of the thermoplastic polyurethane elastomer.
8. The manufacturing method according to claim 7, wherein said thermoplastic polyurethane rubber particles comprise a conventional thermoplastic polyurethane rubber particle and a colored thermoplastic polyurethane rubber particle, said colored thermoplastic polyurethane rubber particle containing said colorant.
9. The manufacturing method according to claim 1, wherein said thermoplastic polyurethane elastic fiber is manufactured by a melt extruder after melting said thermoplastic polyurethane gel particles, and a set temperature of said melt extruder is 150 ℃ to 250 ℃.
10. The production method according to claim 1, wherein the thermoplastic polyurethane crumb is produced from a thermoplastic polyurethane as a single main component.
11. The production method according to claim 1, wherein the thermoplastic polyurethane crumb is made from a thermoplastic polyurethane having a weight average molecular weight of 30000 to 450000.
12. A thermoplastic polyurethane elastic fiber, characterized in that it is produced by the method for producing a thermoplastic polyurethane elastic fiber according to any one of claims 1 to 11, and has a shore hardness of 45D to 80D.
13. A thermoplastic polyurethane elastic fiber according to claim 12, wherein said thermoplastic polyurethane elastic fiber has a fiber strength of greater than 2.0 cN/F.
14. The thermoplastic polyurethane elastic fiber according to claim 12, wherein the thermoplastic polyurethane elastic fiber has an elongation of 80% or less.
15. The thermoplastic polyurethane elastic fiber according to claim 12, wherein the thermoplastic polyurethane elastic fiber has a waste water shrinkage of 30% or less.
16. A thermoplastic polyurethane elastic fiber fabric, characterized in that the thermoplastic polyurethane elastic fiber fabric is obtained by weaving the thermoplastic polyurethane elastic fiber according to any one of claims 12 to 15.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110105465A TWI785500B (en) | 2021-02-18 | 2021-02-18 | Thermoplastic polyurethane elastic fiber and method for manufacturing the same, and fabric thereof |
| TW110105465 | 2021-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114959943A true CN114959943A (en) | 2022-08-30 |
Family
ID=82802006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410229.2A Pending CN114959943A (en) | 2021-02-18 | 2021-04-16 | Thermoplastic polyurethane elastic fiber, manufacturing method and fabric containing same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20220259771A1 (en) |
| CN (1) | CN114959943A (en) |
| TW (1) | TWI785500B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242385A (en) * | 1998-07-06 | 2000-01-26 | 可乐丽股份有限公司 | Thermoplastic polyurethanes, polyurethane elastic fibers therefrom, and method for producing the fibers |
| JP2003026755A (en) * | 2001-07-19 | 2003-01-29 | Kuraray Co Ltd | Thermoplastic polyurethane resin and its manufacturing method |
| KR20140095934A (en) * | 2013-01-25 | 2014-08-04 | 주식회사 효성 | Polyurethaneurea elastic fiber and manufacturing method of the same |
| CN106757493A (en) * | 2017-01-13 | 2017-05-31 | 连云港杜钟新奥神氨纶有限公司 | A kind of blueness defends material spandex preparation method |
| TWI705164B (en) * | 2020-02-05 | 2020-09-21 | 三芳化學工業股份有限公司 | Thermoplastic polyurethane fiber and method for producing the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7094966B2 (en) * | 2017-02-10 | 2022-07-04 | ビーエーエスエフ ソシエタス・ヨーロピア | Method of manufacturing elastic fiber, method of manufacturing elastic fiber article, elastic fiber and elastic fiber article |
-
2021
- 2021-02-18 TW TW110105465A patent/TWI785500B/en active
- 2021-04-16 CN CN202110410229.2A patent/CN114959943A/en active Pending
- 2021-08-13 US US17/401,321 patent/US20220259771A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242385A (en) * | 1998-07-06 | 2000-01-26 | 可乐丽股份有限公司 | Thermoplastic polyurethanes, polyurethane elastic fibers therefrom, and method for producing the fibers |
| JP2003026755A (en) * | 2001-07-19 | 2003-01-29 | Kuraray Co Ltd | Thermoplastic polyurethane resin and its manufacturing method |
| KR20140095934A (en) * | 2013-01-25 | 2014-08-04 | 주식회사 효성 | Polyurethaneurea elastic fiber and manufacturing method of the same |
| CN106757493A (en) * | 2017-01-13 | 2017-05-31 | 连云港杜钟新奥神氨纶有限公司 | A kind of blueness defends material spandex preparation method |
| TWI705164B (en) * | 2020-02-05 | 2020-09-21 | 三芳化學工業股份有限公司 | Thermoplastic polyurethane fiber and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| US20220259771A1 (en) | 2022-08-18 |
| TWI785500B (en) | 2022-12-01 |
| TW202233918A (en) | 2022-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Imura et al. | Dry spinning of synthetic polymer fibers | |
| KR100364302B1 (en) | Polyester fiber with excellent processability and process for producing the same | |
| CN105908282A (en) | Preparation method of 33 dtex/144f fine denier polyester fiber | |
| US20120135653A1 (en) | Island-in-sea fiber, artificial leather and methods for producing the same | |
| CN101525786B (en) | Colored profiled polyester multifilament fiber with stable dimension and preparation method thereof | |
| TWI458771B (en) | Thermoplastic cellulose ester composition and fiber made thereof | |
| CN106400175A (en) | Production method of pre-spinning colored high-shrinkage polyester FDYs (Fully Drawn Yarns) | |
| CN110952167A (en) | Method for manufacturing different-shrinkage polyester low-stretch yarns | |
| CN111040152B (en) | Preparation method of polyesteramide based on prepolymer and preparation method of polyesteramide fiber | |
| TWI781277B (en) | Moulded body that comprises elastane incorporated in cellulose and manufacturing method | |
| CN114959943A (en) | Thermoplastic polyurethane elastic fiber, manufacturing method and fabric containing same | |
| US4359557A (en) | Process for producing low pilling textile fiber and product of the process | |
| JP6213693B2 (en) | Core-sheath composite cross-section fiber with excellent hygroscopic and anti-mold properties | |
| CN111590980A (en) | Dacron fabric with good color fixing performance and preparation method thereof | |
| Gupta | Manufactured textile fibers | |
| TW491915B (en) | Elastanes of coarse linear density and their production by wet spinning | |
| JP3418265B2 (en) | Method for producing cation-mix-like fine fiber | |
| JP3939773B2 (en) | Method for producing polyester fiber excellent in dark color and suitable for strong twisting | |
| JP2002161436A (en) | Polytrimethylene terephthalate fiber dyeable with cationic dye | |
| Gavale et al. | Effect of breaks per ton (BPT) on the machine production. | |
| CN114277462A (en) | Easily degradable coated yarn and preparation method thereof | |
| JP3925275B2 (en) | Polylactic acid crimped yarn excellent in heat resistance and method for producing the same | |
| KR20220031388A (en) | Method for manufacturing functional synthetic fiber yarn | |
| CN117306065A (en) | Polylactic acid fiber yarn-dyed smooth-edged fabric production process | |
| JPH10168654A (en) | Polyester fiber for seat belt and seat belt webbing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |