CN115584581A - Core-spun yarn with moisture-sensitive shape memory effect and preparation method thereof - Google Patents

Core-spun yarn with moisture-sensitive shape memory effect and preparation method thereof Download PDF

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Publication number
CN115584581A
CN115584581A CN202211245773.7A CN202211245773A CN115584581A CN 115584581 A CN115584581 A CN 115584581A CN 202211245773 A CN202211245773 A CN 202211245773A CN 115584581 A CN115584581 A CN 115584581A
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China
Prior art keywords
core
spun yarn
shape memory
moisture
fiber
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Pending
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CN202211245773.7A
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Chinese (zh)
Inventor
韩晨晨
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Suzhou Chenxing New Material Technology Co ltd
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Suzhou Chenxing New Material Technology Co ltd
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Priority to CN202211245773.7A priority Critical patent/CN115584581A/en
Publication of CN115584581A publication Critical patent/CN115584581A/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/442—Cut or abrasion resistant yarns or threads
    • 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
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/20—Cellulose-derived artificial fibres
    • D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
    • 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
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/20—Cellulose-derived artificial fibres
    • D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
    • D10B2201/24—Viscose
    • 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
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • 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
    • D10B2401/02—Moisture-responsive characteristics
    • 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

Abstract

The invention discloses a covering yarn with a moisture-sensitive shape memory effect, which adopts a hydrophilic fiber filament bundle with certain twist as a core layer and hydrophobic polyester staple fiber with a low melting point as a skin layer, and after the covering yarn is heated and processed in a spinning forming process, the skin layer fiber is melted and bonded with the core layer fiber, so that the twisting structure of the yarn is solidified. When the core layer is stimulated by moisture, the core layer absorbs water, expands, untwists and rotates and drives the cortex layer to untwist and rotate; when the drying is recovered, the sheath layer drives the core layer to recover the twisting state; based on the moisture absorption swelling difference of the two materials and the structural combination of core layer twisting and skin layer consolidation of the core-spun yarn, the core-spun yarn has moisture sensitivity and shape memory. The core-spun yarn is prepared by the air-jet vortex spinning technology, so that the spinning efficiency is high, the yarn strength is high, and the wear resistance is good. The fabric woven by the covering yarn has smooth surface and good fuzzing and pilling resistance, and can be restored to the original shape after being dried only by simple wet stimulation after being wrinkled and deformed.

Description

Core-spun yarn with moisture-sensitive shape memory effect and preparation method thereof
Technical Field
The invention relates to a core-spun yarn with a moisture-sensitive shape memory effect and a preparation method thereof, belonging to the field of spinning.
Background
The core spun yarn is also called composite yarn or covering yarn, and is a new type of yarn formed by combining two or more kinds of fibers. It can utilize the excellent physical performance of core yarn chemical fiber filament, the performance and surface characteristic of outer covering short fiber, and make full use of the features of two kinds of fiber to make up their deficiencies. For example, the polyester-cotton core-spun yarn can fully exert the advantages of polyester filament yarn such as stiffness, crease resistance, easy washing and quick drying, and simultaneously can exert the advantages of good moisture absorption, less static electricity and difficult fluffing and pilling of the cotton fiber of the outer package. The core spun yarn also allows for the weight reduction of the fabric while maintaining and improving fabric performance, and utilizes the different chemical properties of the core filament and the sheath fiber, among other things.
The air-jet vortex spinning technology is a novel spinning method for spinning by using a fixed vortex spinning tube to replace a spinning cup rotating at a high speed, has the remarkable characteristics of high spinning speed, short spinning flow, small occupied area and high automation degree, and produces vortex spun yarns with less hairiness (the hairiness with the length of more than 3mm is almost zero), high wear resistance and pilling resistance.
Until now, abrasion-resistant core-spun yarns (CN 20224435.1), durable antibacterial core-spun yarns (CN 202110313152.7), flame-retardant core-spun yarns (CN 201810789516.7) and moisture-absorbing fast-drying core-spun yarns (CN 201922352962.4) have been prepared by air-jet vortex spinning technology, and most of the core-spun yarns adopt core-layer fiber structures formed by parallel straightening and skin-layer wrapping, and the research on shape memory performance is less. In addition, a core-spun yarn with a shape memory function is prepared by using alloy wires (CN 201610649764.2), temperature-sensitive polyurethane (CN 201720391994.3) and the like as core layers, but the raw materials and the processing equipment process of the core-spun yarn are not universal.
Therefore, there is a need for a new shape memory core spun yarn to solve the above problems.
Disclosure of Invention
The invention aims to provide the covering yarn with the moisture sensitive shape memory effect and the preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a core spun yarn having a moisture sensitive shape memory effect comprising:
the core layer is arranged in the center of the core-spun yarn, hydrophilic fiber filament bundles are used as core filament bundles, the core filament bundles are twisted by a pre-twisting device, and the twist degree range is 100-1000 twist/m;
and the skin layer wraps the periphery of the core layer, and the hydrophobic low-melting-point polyester staple fibers are used as outer covering fiber strips.
Further, the hydrophilic fiber filament bundle may be a viscose filament bundle or a fiber-rich filament bundle.
Further, the hydrophilic fiber filament bundle has a count of 150D to 270D.
Further, the mass ratio of the core filament bundle in the core-spun yarn is 45-50%.
Furthermore, the melting point of the hydrophobic low-melting-point polyester staple fiber is 85-145 ℃.
Furthermore, the quantitative ratio of the outer covering fiber strip is 10-25 g/5m.
Further, the core-spun yarn is processed and manufactured through an air jet vortex hot air spinning process.
A method for preparing a core-spun yarn with moisture sensitive shape memory effect comprises the following steps:
s1, twisting the core tows through a pre-twisting device, passing through a tension controller, entering a front roller of a vortex spinning machine and a front leather roller matched with the front roller, and outputting;
s2, after the outer covering fiber strands are subjected to the drafting action of a rear roller, a middle roller and a front roller, the outer covering fiber strands enter a front roller of the vortex spinning machine and a front leather roller matched with the front roller and are output;
and S3, collecting the core filament bundle and the outer covering filament bundle, feeding the collected core filament bundle and the outer covering filament bundle together into a vortex spinning hot air hollow spindle, and obtaining the humidity-sensitive shape memory vortex spinning core-spun yarn under the action of vortex hot air flow.
Further, the spinning speed of the vortex spinning machine is 300-500 m/min, the air pressure of hot air flow in the vortex spinning machine is 0.40-0.65 MPa, and the temperature of the hot air flow in the vortex spinning machine is 90-150 ℃.
Further, the yarn number of the moisture-sensitive shape memory vortex spun core-spun yarn is 20 to 40tex.
The invention has the beneficial effects that:
1. the core-spun yarn adopts a hydrophilic fiber filament bundle with certain twist as a core layer, wraps a hydrophobic low-melting-point polyester staple fiber as a skin layer, fixes the twisting form of the core layer through hot air vortex spinning, when the core layer is stimulated by moisture, the core layer absorbs water, expands, untwists and rotates and drives the skin layer to untwist and rotate, when the core layer is dried, the skin layer drives the core layer to recover the twisting state, and the core-spun yarn has moisture sensitivity and shape memory based on the moisture absorption swelling difference of two materials and the structural combination of core layer twisting and skin layer consolidation of the core-spun yarn;
2. the core-spun yarn is prepared by using the air-jet vortex spinning technology, the spinning efficiency is high, and the yarn has the advantages of high strength, good wear resistance, smooth fabric surface and good fuzzing and pilling resistance by changing the types of the core layer and the skin layer of the core-spun yarn;
3. after the fabric woven by the core-spun yarn disclosed by the invention is folded and deformed, the fabric can be curled and deformed under the driving of the rotation of the yarn only by simple wet stimulation, and the dried fabric can be recovered.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view showing a structure of a spinning apparatus according to a preferred embodiment of the present invention.
1. Wrapping a beard strip; 2. a back roller; 3. a middle roller; 4. a front roller; 5. vortex spinning hot air hollow ingots; 6. a fiber-rich tow; 7. a pre-twisting device; 8. core tow; 9. a tension device; 10. moisture sensitive shape memory vortex spun core spun yarn.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The core-spun yarn with moisture sensitivity and shape memory effect disclosed by the invention has the advantages of moisture sensitivity and shape memory and convenience in use. The core-spun yarn includes: the core layer and the cortex layer wrapping the periphery of the core layer.
The core layer is arranged in the center of the core-spun yarn, and the hydrophilic fiber filament bundle is used as the core filament bundle, and the hydrophilic fiber filament bundle can be viscose filament bundle, fiber-rich filament bundle and the like, which is not limited herein. In this embodiment, the fiber-rich filament bundle is used as the hydrophilic fiber filament bundle, so that the moisture content of the core spun yarn and the fabric thereof can meet the physiological requirements of human skin, and the core spun yarn and the fabric thereof are smooth, cool, air-permeable, antistatic, and colorful in dyeing, and have the characteristics of small shrinkage, high strength, good elasticity, good alkali resistance, and the like. The yarn number of the fiber-rich filament bundle is 150D-270D, so that the core-spun yarn and the fabric thereof are soft and smooth while the strength is ensured.
The core tow needs to be twisted by a pre-twisting device, and the pre-twisting degree range is 100-1000 twist/m. Through twisting, the core tows generate inclined spiral lines to twist, a compact structure which is not easy to be transversely damaged is formed, and the core tows have certain strength, extensibility and elasticity; the processability of the core-spun yarn is improved, and the core-spun yarn can bear various mechanical forces in dyeing, processing and using; the moisture absorption and the thermal invariance of the prepared core-spun yarn are improved, and the comfort in dyeing, processing and using is favorably improved; the prepared core-spun yarn has better fuzzing and pilling resistance, snagging resistance and dyeability, ensures that the final textile is bright in color, smooth and soft, and is popular with consumers.
The mass ratio of the core tow in the core-spun yarn is not limited, and can be any ratio. Preferably, in this embodiment, the mass ratio of the core tow in the core-spun yarn is 45% to 50%, and the obtained core-spun yarn has the advantages of high strength, easy yarn formation, less broken ends, and good moisture sensitivity and shape memory.
The sheath layer is wrapped on the periphery of the core layer, the hydrophobic low-melting-point polyester staple fiber is used as the outer-wrapping fiber strips, the ration of the outer-wrapping fiber strips is 10-25 g/5m, yarn defects can be effectively reduced, the quality of the core-spun yarn is improved, and the prepared core-spun yarn is firm, durable, crease-resistant and non-ironing, good in hair-sticking and crease-resistant performance and shape-preserving performance, sunlight-resistant, abrasion-resistant, mildew-resistant and moth-proof, and high in strength and elastic recovery capability.
Specifically, the low-melting point polyester staple fiber has a melting point of 85-145 ℃, has low requirement on the temperature of hot air flow required in the spinning process, and has good spinnability.
The core layer of the core-spun yarn adopts the hydrophilic fiber filament bundle with certain twist, the skin layer adopts the hydrophobic low-melting-point polyester staple fiber, and the two have obvious moisture absorption and swelling difference. After being heated and processed in the spinning forming process, the skin layer fiber is melted and bonded with the core layer fiber, so that the yarn twisting structure is solidified. Based on the moisture absorption swelling difference of the two materials and the structural combination of core layer twisting and skin layer consolidation of the core-spun yarn, when the deformed core-spun yarn is stimulated by moisture, the core-spun yarn is untwisted and rotated under the drive of the core layer; when the drying is recovered, the cortex layer drives the core layer to recover the original twisting state, and the core layer has the humidity sensitivity and the shape memory. Therefore, after the fabric woven by the core-spun yarn is folded and deformed, the fabric can be restored to the original state after being dried only by simple wet stimulation, the raw materials are generally and easily available, the operation is simple and efficient, and the practicability is high.
The core-spun yarn is processed and manufactured by an air-jet vortex hot air spinning process, and the core-spun yarn consisting of the core layer and the skin layer is obtained by adjusting the spinning speed, the hot air temperature and the air-jet air pressure of the vortex spinning machine.
Referring to fig. 1, the method for preparing the core spun yarn with moisture sensitive shape memory effect in this embodiment includes:
s1, twisting the rich-fiber filament bundle 6 by a pre-twisting device 7, passing through a tension device 9, entering a front roller 4 of a vortex spinning machine and a front leather roller matched with the front roller 4, and outputting.
S2, the outer covering fiber strip 1 enters the front roller 4 of the vortex spinning machine and the front leather roller matched with the front roller 4 to be output after being subjected to the drafting action of the rear roller 2, the middle roller 3 and the front roller 4.
S3, collecting the core filament bundle 8 and the outer covering fiber strips 1, and feeding the core filament bundle and the outer covering fiber strips together into a vortex spinning hot air hollow spindle 5; the spinning speed of the vortex spinning machine is set to be 300-500 m/min, and the temperature of hot air flow is set to be 90-150 ℃. The air injection pressure of hot air flow is 0.40 MPa-0.65 MPa, the spinning speed is proper, the strength of the finished yarn is high, the quality is excellent, and the backflow phenomenon can not be generated in the spinning process; obtaining the required moisture sensitive shape memory vortex spun core-spun yarn 10 under the action of vortex hot air flow; the spun core-spun yarn has the yarn number of 20-40 tex, is stable in production process and not easy to break, and can be used for weaving a silky-textured moisture-sensitive shape memory fabric.
In conclusion, the core-spun yarn adopts the hydrophilic fiber filament bundle with certain twist as the core layer, the low-melting-point polyester staple fiber with hydrophobicity is wrapped as the skin layer, the twisting form of the core layer is fixed through hot air vortex spinning, when the core layer is stimulated by moisture, the core layer absorbs water, expands, untwists and rotates and drives the skin layer to untwist and rotate, when the core layer is dried, the skin layer drives the core layer to restore the twisting state, and the core-spun yarn has the moisture sensitivity and the shape memory based on the moisture absorption swelling difference of the two materials and the structural combination of the core layer twisting and the skin layer consolidation of the core-spun yarn; the core-spun yarn is prepared by using the air-jet vortex spinning technology, the spinning efficiency is high, and the yarn has the advantages of high strength, good wear resistance, smooth fabric surface and good fuzzing and pilling resistance by changing the types of the core layer and the skin layer of the core-spun yarn; after the fabric woven by the core-spun yarn disclosed by the invention is folded and deformed, the fabric can be curled and deformed under the driving of the rotation of the yarn only by simple wet stimulation, and the dried fabric can be recovered.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. A core spun yarn having a moisture sensitive shape memory effect, comprising:
the core layer is arranged in the center of the core-spun yarn, hydrophilic fiber filament bundles are used as core filament bundles, the core filament bundles are twisted by a pre-twisting device, and the twist degree range is 100-1000 twists/m;
and the skin layer wraps the periphery of the core layer, and the low-melting-point polyester staple fiber with hydrophobicity is used as an outer covering strand.
2. A core spun yarn having a moisture sensitive shape memory effect as claimed in claim 1, wherein said hydrophilic fiber filament bundle is viscose filament bundle or rich fiber filament bundle.
3. A core-spun yarn having a moisture-sensitive shape memory effect according to claim 1, wherein the hydrophilic fiber filament bundle has a count number of 150D to 270D.
4. A core-spun yarn having a moisture-sensitive shape memory effect according to claim 1, wherein the mass ratio of the core strand in the core-spun yarn is 45% to 50%.
5. A core-spun yarn having a moisture-sensitive shape memory effect as claimed in claim 1, wherein the hydrophobic low-melting point polyester staple fiber has a melting point of 85 to 145 ℃.
6. A core-spun yarn having a moisture-sensitive shape memory effect according to claim 1, wherein the outer sheath fiber strand has a basis weight of 10 to 25g/5m.
7. A core spun yarn having a moisture sensitive shape memory effect as in claim 1, wherein the core spun yarn is processed by an air jet vortex hot air spinning process.
8. A method of making a core spun yarn having a moisture sensitive shape memory effect as claimed in any one of claims 1 to 7, comprising the steps of:
s1, twisting the core tows through a pre-twisting device, passing through a tension controller, entering a front roller of a vortex spinning machine and a front leather roller matched with the front roller, and outputting;
s2, after the outer covering fiber strands are subjected to the drafting action of a rear roller, a middle roller and a front roller, the outer covering fiber strands enter a front roller of the vortex spinning machine and a front leather roller matched with the front roller and are output;
and S3, collecting the core filament bundle and the outer covering fiber strips, feeding the core filament bundle and the outer covering fiber strips into a vortex spinning hot air hollow spindle together, and obtaining the moisture-sensitive shape memory vortex spinning core-spun yarn under the action of vortex hot air flow.
9. A method of manufacturing a core spun yarn having a moisture sensitive shape memory effect according to claim 7, wherein a spinning speed of the vortex spinning machine is 300 to 500m/min, a jet air pressure of the hot air stream in the vortex spinning machine is 0.40 to 0.65MPa, and a temperature of the hot air stream in the vortex spinning machine is 90 to 150 ℃.
10. A process for preparing a core spun yarn having a moisture sensitive shape memory effect as claimed in claim 7, wherein the moisture sensitive shape memory vortex spun core spun yarn has a yarn count of 20 to 40tex.
CN202211245773.7A 2022-10-12 2022-10-12 Core-spun yarn with moisture-sensitive shape memory effect and preparation method thereof Pending CN115584581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211245773.7A CN115584581A (en) 2022-10-12 2022-10-12 Core-spun yarn with moisture-sensitive shape memory effect and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211245773.7A CN115584581A (en) 2022-10-12 2022-10-12 Core-spun yarn with moisture-sensitive shape memory effect and preparation method thereof

Publications (1)

Publication Number Publication Date
CN115584581A true CN115584581A (en) 2023-01-10

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