CN114934334A - Preparation process of ring spun core-spun yarn - Google Patents
Preparation process of ring spun core-spun yarn Download PDFInfo
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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
- D02G3/02—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
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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
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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
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
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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
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
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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
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/449—Yarns or threads with antibacterial properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
- D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
- D06M2101/28—Acrylonitrile; Methacrylonitrile
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- D10B2201/01—Natural vegetable fibres
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- 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
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
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- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
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- 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
- D10B2331/14—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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Abstract
The invention discloses a preparation process of a ring spinning covering yarn, which takes reinforced fibers and UHMWPE fibers as raw materials to prepare a core yarn, and during the preparation, the loosened reinforced fibers and natural plant fibers are twisted to obtain a first core yarn and the loosened UHMWPE fibers are twisted to obtain a second core yarn, and the first core yarn and the second core yarn are wound to obtain a double-strand core yarn; then carrying out infiltration modification on the double-strand core yarn by using a nano plant cellulose mixture colloid doped with bismaleimide powder and TPE powder, and treating a space gap structure by using carbohydrate hydrolase after modification to obtain the double-strand core yarn serving as the core yarn; and then carrying out core-spun wet spinning on the core yarn by using the outer-wrapping fiber according to the existing ring spinning process to obtain core-spun wet spun yarn, and processing the core-spun wet spun yarn to obtain the finished product of ring spun core-spun yarn. The ring spun core-spun yarn can replace the core yarn of the traditional spandex core-spun yarn and improve the overall performance of the spandex core-spun yarn.
Description
Technical Field
The invention relates to a yarn preparation technology in the technical field of spinning, in particular to a preparation process of ring spun core-spun yarn.
Background
With the improvement of living standard of people, the requirements of people on consumer goods are higher and higher, wherein, the requirements on the fabric products are developed from the initially pursued warm keeping to the functional directions of comfort, beauty, health and the like, functional textiles are produced at the same time, and various functional fabric products are continuously developed. The core-spun yarn is made by winding the outer wrapping fiber on the periphery of the core yarn, has the excellent characteristics of the outer wrapping fiber, such as good texture, fluffiness, high fullness and the like, and also has the excellent characteristics of strong elongation, shape retention, drapability, wrinkle resistance, uniform yarn levelness, uniform fabric surface effect and the like of the core yarn serving as the skeleton yarn, so that the core-spun yarn is widely applied to the textile industry.
In the prior art, spandex is generally adopted as a core yarn, the demand of various dress fabrics is continuously increased along with the increasing requirements of people on the quality and the grade of fabric products, and the high-quality core yarn is to uniformly and tidily wind outer covering fibers on the outer surface of the core yarn; the core yarn needs to be tensioned when the traditional spandex core-spun yarn is produced, the quality of the formed core-spun yarn is directly influenced by the tensioning effect and the tensioning state of the traditional spandex core-spun yarn, and a core yarn tensioning device is easy to cause fatigue damage, so that the core-spun yarn has yarn defects such as biased yarn, uneven yarn levelness, uneven elasticity, hairiness, hollow core, bare yarn and the like in a high proportion in the production process; meanwhile, the product processed by the traditional spandex core-spun yarn has the problems of poor heat resistance, poor water washing resistance and poor size stability, and the use requirement of the existing fabric is difficult to meet.
Therefore, the research on a preparation method of the core-spun yarn without using spandex is of great significance.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a preparation process of a ring spun core-spun yarn, so as to solve the defects in the technical background.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a preparation process of a ring spun core-spun yarn specifically comprises the following operation steps:
s1, preparing a core yarn by taking the reinforced fibers and the UHMWPE fibers as raw materials; during preparation, the reinforced fiber is subjected to physical opening treatment, and then the reinforced fiber subjected to physical opening and the natural plant fiber are twisted to obtain a first core yarn; twisting UHMWPE fiber to obtain a second core yarn; the prepared first core yarn and the second core yarn are wound in parallel to obtain a double-ply core yarn;
s2, adding deionized water into the nano plant cellulose to prepare a suspension, fully and uniformly dispersing the obtained suspension, then performing pressure infiltration, adding bismaleimide powder and TPE powder into the percolate, and performing auxiliary dispersion by using high-frequency ultrasonic waves; fully infiltrating the double-strand core yarn obtained in the step S1 with the obtained mixture colloid, and performing low-temperature air drying after infiltration to obtain the modified double-strand core yarn;
s3, treating the double-ply core yarn after the modification treatment by using carbohydrate hydrolase to form the double-ply core yarn with strip-shaped and dot-hole-shaped space gaps, and obtaining the core yarn;
s4, preparing wrapping fibers, and spinning the wrapping fibers into outer-layer roving after the wrapping fibers are processed; then carrying out core-spun wet spinning by using a wet spinning frame under the ring spinning process condition to obtain core-spun wet spun yarns;
and S5, washing the core-spun wet spun yarn with hot water to remove redundant bismaleimide resin and TPE, and drying to obtain the ring spun core-spun yarn.
As a further limitation, the reinforcing fibers are EKS fibers or modified polyaradiazole fibers;
when the EKS fiber is adopted, the core-spun yarn with better hygroscopicity, heat preservation and antibacterial property and with the attention on comfort performance can be obtained and can be used for preparing fabrics such as underwear, socks and the like;
when the modified aromatic polyoxadiazole fiber is adopted, the core-spun yarn with better strength and toughness and structural strength of interest can be obtained, and the core-spun yarn can be used for preparing fabrics of sportswear, homework clothes and the like.
As a further limitation, when the reinforcing fibers are subjected to physical opening treatment, the reinforcing fibers are firstly tiled on a carbon fiber plate, and then continuous needling and carding operation is carried out by using a gill to realize opening.
The natural plant fibers adopted in the first core yarn are mango fibers, and the mass ratio of the reinforcing fibers to the mango fibers adopted in the first core yarn is 3: 1-4: 1.
Further, the ratio of the core yarn diameter of the first core yarn to the core yarn diameter of the second core yarn in the double-ply core yarn is 1:1 to 2: 1.
As a further limitation, when the nano plant cellulose is used for preparing suspension, the amount of the nano plant cellulose added in each liter of deionized water is controlled to be 20-30 g;
the mass ratio of the bismaleimide powder to the TPE powder is 1: 1-3: 1, and the sum of the added mass of the bismaleimide powder and the added mass of the TPE powder in the percolate is not more than 50% of the mass of the nano plant cellulose used as the raw material.
And as a further limitation, when the high-frequency ultrasonic wave is used for performing auxiliary dispersion on the percolate, controlling the ultrasonic frequency to be 45-50 kHz and the ultrasonic power to be 300-450W, stopping for 10S after every 45S treatment, and treating for 30-45 min by taking the process as a circulation.
And as a further limitation, when the mixture colloid is used for carrying out infiltration treatment on the double-strand core yarn, the infiltration time is 48-72 hours, low-temperature air drying is carried out after the infiltration is finished, the air drying temperature is 50-60 ℃ during the treatment, the air flow rate is 5-8 m/S, and the water content of the double-strand core yarn is below 15% after the air drying is finished.
Further, when the core-spun wet-spun yarn is subjected to hot water washing and removing operation, the water temperature of hot water is controlled to be 80-90 ℃ for flowing water washing and removing.
As a further limitation, after the core-spun wet yarn is subjected to the hot water washing operation in step S5, the core-spun wet yarn is subjected to the modified soaking treatment using vaseline, silicone oil and an antistatic agent, so that the antistatic property and the water washing resistance of the core-spun wet yarn can be effectively improved.
According to the technical scheme, EKS fibers and modified aromatic oxadiazole fibers are used as reinforcing fibers to be twisted with natural plant fibers to obtain first yarns, the first yarns obtained by twisting UHMWPE fibers are matched to be wound to obtain double-strand core yarn, and the double-strand core yarn is used as the core yarn to replace spandex in the conventional package core yarn to obtain the covering yarn prepared without using spandex.
The EKS fibers and the modified aromatic polyoxadiazole fibers as the reinforcing fibers have stronger structural stability, can provide better adsorption stability in the subsequent infiltration process, and are convenient for absorbing and retaining nano plant cellulose, bismaleimide powder and TPE powder in colloid.
The first core yarn formed by twisting the reinforcing fiber and the natural plant fiber can partially hydrolyze the nano plant cellulose and the natural plant fiber when being treated by carbohydrate hydrolase so as to form strip-shaped and dot-hole-shaped space gaps in the first yarn due to the existence of the nano plant cellulose and the natural plant fiber; the structural stability of the first yarn with the structure is reduced, so that the second core yarn twisted by UHMWPE fibers is doubled and reinforced, the UHMWPE (ultra-high molecular weight polyethylene) is high-performance fibers and can reinforce the strength lost by the first yarn under the condition of enzymolysis, and meanwhile, due to the existence of the space gap of the first yarn, the UHMWPE fibers with toughness and the two reinforcing fibers have certain elastic restoring force, so that the replacement of spandex core yarns can be realized, and compared with the spandex core yarns, the structure stability is better, and core-spun yarns do not need to be spun in a tensioned state; meanwhile, the prepared core-spun yarn has better temperature change resistance, water washing resistance and better dimensional stability.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the following examples, it will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The first embodiment is as follows:
the core spun yarn of example one was prepared according to the following procedure:
in this embodiment, the reinforcing fibers are EKS fibers, which are focused on comfort, and have the properties of temperature adjustment, humidity adjustment, and bacteria resistance, and can help to improve the above properties of the resulting core-spun yarn.
First, preparing a core yarn:
before core-spun yarn preparation, EKS fibers serving as raw materials are physically opened, the EKS fibers are tiled on a carbon fiber plate during physical opening, then continuous needling and carding operation is carried out by utilizing a needle comb to realize opening, and opened EKS fibers are obtained for standby after opening is finished.
EKS fibers were mixed with mango fibers, as follows: and twisting the mango fibers at a mass ratio of 4:1 to obtain the first core yarn.
And twisting the UHMWPE fibers to obtain a second core yarn while preparing the first core yarn.
And (3) carrying out parallel winding on the first core yarn and the second core yarn to obtain a double-ply core yarn, and controlling the ratio of the core yarn diameter of the first core yarn to the core yarn diameter of the second core yarn in the double-ply core yarn to be 1: 1.
Then preparing a modified colloidal solution:
adding commercially available nano plant cellulose into deionized water according to the proportion of 20g of nano plant cellulose per liter of deionized water, dispersing uniformly to obtain a suspension, performing pressure infiltration on the suspension in a cellulose osmotic membrane filtration system by using the vacuum pressure of 0.5MPa to obtain an infiltration solution, adding 200-mesh bismaleimide powder and TPE powder mixture powder into the infiltration solution, controlling the adding mass of the mixture powder to be 30% of the mass of the nano plant cellulose serving as a raw material in the suspension, and controlling the mass ratio of the bismaleimide powder to the TPE powder in the mixture powder to be 1: 1. And (3) after adding the mixture powder, processing the mixture suspension by using high-frequency ultrasonic waves, controlling the ultrasonic frequency to be 45kHz and the ultrasonic power to be 300W, stopping processing for 10S after every 45S, and processing for 45min by taking the ultrasonic frequency as a circulation to obtain a modified colloidal solution for later use.
Soaking and modifying the double-strand core yarn prepared by the method by using a modified colloidal solution, wherein the soaking time is controlled to be 48 hours when the soaking and modifying treatment is carried out, taking out the double-strand core yarn after the soaking is finished, carrying out low-temperature air drying after the redundant colloidal solution is extruded, controlling the air drying temperature to be 52 ℃ and the air flow rate to be 8m/S, and air drying the modified double-strand core yarn until the water content is 12% to obtain the modified double-strand core yarn;
treating the double-strand core yarn after modification treatment by using carbohydrate hydrolase, wherein the carbohydrate hydrolase can hydrolyze most of natural plant fibers and part of nano plant cellulose in the core yarn, and strip-shaped and point-shaped cavities are obtained at the hydrolysis positions to obtain the core yarn;
preparing the outer covering fiber, wherein in different embodiments, the outer covering fiber can be most of fabric fibers on the market, and the outer covering fiber which can be used for preparing the spandex core-spun yarn can be used for preparing the core-spun yarn of the embodiment. In this example, the Xinjiang long stapled cotton fiber was used as the outer covering fiber, and the resulting core spun yarn also had the touch and surface properties of Xinjiang long stapled cotton.
Spinning refined cotton fibers obtained by cleaning Xinjiang long staple cotton fibers into outer-layer roving, performing core-spun wet spinning by using a wet spinning frame under the condition of a ring spinning process to obtain core-spun wet spun yarns, washing the core-spun wet spun yarns by using hot water at 80 ℃ to remove redundant bismaleimide resin and TPE, and drying to obtain the finished product of the ring spun core-spun yarns.
The finished product of the ring spun core-spun yarn has better hygroscopicity, heat preservation and antibacterial property, the hand feeling of the finished product is close to that of the core-spun yarn which is prepared by adopting spandex with the same size as the core yarn and Xinjiang long stapled cotton fiber as the outer covering fiber through the same process, and the antibacterial property of the finished product of the ring spun core-spun yarn is due to the spandex core-spun yarn and has the advantages of good glossiness, light weight, stiff and smooth texture, smoothness, soft hand feeling and the like; in addition, the spandex core-spun yarn is obviously superior to spandex core-spun yarn in the aspects of ultimate pull performance and pull-fatigue resistance, can be used for preparing fabrics of underwear and the like, and is particularly suitable for being used as fabrics of underwear and silk stockings.
The second embodiment:
the core spun yarn of example two was prepared according to the following procedure:
in this embodiment, the reinforcing fiber is a modified polyaryloxadiazole fiber (POD fiber), which has structural strength and stability, high temperature resistance, corrosion resistance, and dimensional stability, and can assist in improving the above-mentioned properties of the resulting core-spun yarn.
First, preparing a core yarn:
before core-spun yarn preparation, POD fibers serving as raw materials are physically opened, the POD fibers are flatly laid on a carbon fiber plate during physical opening, then continuous needling and carding operation is carried out by utilizing a needle comb to realize opening, and the opened POD fibers are obtained after opening is completed and are reserved.
POD fiber was mixed with mango fiber, and the mixture was mixed according to POD fiber: and twisting the mango fibers at a mass ratio of 3:1 to obtain the first core yarn.
And twisting the UHMWPE fibers to obtain a second core yarn while preparing the first core yarn.
And (3) carrying out parallel winding on the first core yarn and the second core yarn to obtain a double-ply core yarn, and controlling the ratio of the core yarn diameter of the first core yarn to the core yarn diameter of the second core yarn in the double-ply core yarn to be 1: 1.
Then preparing a modified colloidal solution:
adding commercially available nano plant cellulose into deionized water according to the proportion of mixing 30g of nano plant cellulose per liter of deionized water, dispersing uniformly to obtain a suspension, performing pressure infiltration on the suspension in a cellulose osmotic membrane filtration system by using the vacuum pressure of 0.6MPa to obtain an infiltration solution, adding 300-mesh bismaleimide powder and TPE powder mixture powder into the infiltration solution, controlling the adding mass of the mixture powder to be 40% of the mass of the nano plant cellulose serving as a raw material in the suspension, and controlling the mass ratio of the bismaleimide powder to the TPE powder in the mixture powder to be 2: 1. And (3) after adding the mixture powder, processing the mixture suspension by using high-frequency ultrasonic waves, controlling the ultrasonic frequency to be 45kHz and the ultrasonic power to be 400W, stopping processing for 10S after every 45S, and processing for 38min by taking the ultrasonic frequency as a circulation to obtain a modified colloidal solution for later use.
Soaking and modifying the double-strand core yarn prepared by the method by using a modified colloidal solution, wherein the soaking time is controlled to be 64h when the soaking and modifying treatment is carried out, taking out the double-strand core yarn after the soaking is finished, carrying out low-temperature air drying after the redundant colloidal solution is extruded, controlling the air drying temperature to be 60 ℃ and the air flow rate to be 6m/S, and air drying the modified double-strand core yarn until the water content is 13% to obtain the modified double-strand core yarn;
treating the double-ply core yarn after the modification treatment by using carbohydrate hydrolase to form double-ply core yarn with strip-shaped and dot-hole-shaped space gaps, thus obtaining the core yarn;
spinning nylon fiber as a raw material into outer layer roving, performing core-spun wet spinning by using a wet spinning frame under the ring spinning process condition to obtain core-spun wet spun yarn, washing the core-spun wet spun yarn by using hot water at 80 ℃ to remove redundant bismaleimide resin and TPE, performing modified soaking treatment on the core-spun wet spun yarn by using vaseline, organic silicone oil and an antistatic agent to effectively improve the antistatic property and the water washing resistance of the core-spun wet spun yarn, and then drying by hot air to obtain the finished product of the ring-spun core yarn.
The finished product ring spun core-spun yarn has good air permeability, structural strength and stability, and the fabric woven by the core-spun yarn has good air permeability and stiff texture, and has good elasticity, crease resistance and heat preservation, and spandex with the same size is used as core yarn and nylon fiber wrapping fiber, and the core-spun yarn prepared by the same process does not have the advantages of the performance of the core-spun yarn superior to that of the core-spun yarn, and meanwhile, the fabric prepared by the core-spun yarn has the effects of stiff and smooth texture, draping and shape maintenance, and is particularly suitable for being used as work clothes, inner linings of sports coats and high-grade clothes linings.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A preparation process of ring spun core-spun yarn is characterized by comprising the following operation steps:
s1, preparing a core yarn by taking the reinforced fibers and the UHMWPE fibers as raw materials; during preparation, the reinforced fiber is subjected to physical opening treatment, and then the reinforced fiber subjected to physical opening and the natural plant fiber are twisted to obtain a first core yarn; twisting UHMWPE fiber to obtain a second core yarn; the prepared first core yarn and the second core yarn are wound in parallel to obtain a double-strand core yarn;
s2, adding deionized water into the nano plant cellulose to prepare a suspension, fully and uniformly dispersing the obtained suspension, then performing pressure infiltration, adding bismaleimide powder and TPE powder into the percolate, and performing auxiliary dispersion by using high-frequency ultrasonic waves; fully infiltrating the double-strand core yarn obtained in the step S1 with the obtained mixture colloid, and performing low-temperature air drying after infiltration to obtain the modified double-strand core yarn;
s3, treating the double-ply core yarn after modification treatment by using carbohydrate hydrolase to form double-ply core yarn with strip-shaped and dot-hole-shaped space gaps, and obtaining the core yarn;
s4, preparing wrapping fibers, and spinning the wrapping fibers into outer-layer thick yarns after the wrapping fibers are processed; then carrying out core-spun wet spinning by using a wet spinning frame under the ring spinning process condition to obtain core-spun wet spun yarns;
and S5, washing the core-spun wet spun yarn with hot water to remove redundant bismaleimide resin and TPE, and drying to obtain the ring spun core-spun yarn.
2. The process of claim 1, wherein the reinforcing fiber is EKS fiber or modified polyaryloxadiazole fiber.
3. The process of claim 1, wherein the physical opening of the reinforcing fibers is achieved by laying the reinforcing fibers on a carbon fiber plate and then continuously needling and carding with a needle comb.
4. The preparation process of the ring spun core-spun yarn according to claim 1, wherein the natural plant fiber adopted in the first core yarn is mango fiber, and the mass ratio of the reinforcing fiber to the mango fiber adopted in the first core yarn is 3: 1-4: 1.
5. The process for preparing a ring spun core spun yarn according to claim 1, wherein the ratio of the core yarn diameter of the first core yarn to the second core yarn in the two-ply core yarn is 1:1 to 2: 1.
6. The process for preparing a ring spun core spun yarn according to claim 1, wherein the amount of the nano plant cellulose added to each liter of deionized water is controlled to be 20 to 30g when the nano plant cellulose is used for preparing a suspension.
7. The preparation process of the ring spun core spun yarn according to claim 6, wherein the mass ratio of the bismaleimide powder to the TPE powder is 1: 1-3: 1, and the sum of the mass of the bismaleimide powder and the mass of the TPE powder added in the leachate is not more than 50% of the mass of the nano plant cellulose used as the raw material.
8. The process for preparing the ring spun core spun yarn according to claim 1, wherein the ultrasonic frequency is controlled to be 45-50 kHz and the ultrasonic power is controlled to be 300-450W when the leachate is dispersed by using the high-frequency ultrasonic wave, 10S is stopped after every 45S treatment, and the treatment is performed for 30-45 min by taking the ultrasonic frequency as a circulation.
9. The preparation process of the ring spun core spun yarn according to claim 1, wherein when the mixture colloid is used for carrying out infiltration treatment on the double-strand core yarn, the infiltration time is 48-72 hours, low-temperature air drying is carried out after the infiltration is finished, the air drying temperature is 50-60 ℃, the air flow rate is 5-8 m/S, and when the air drying is finished, the water content of the double-strand core yarn is below 15%.
10. The process for preparing a ring spun core spun yarn according to claim 1, wherein the core spun wet yarn is washed with running water at a temperature of 80 to 90 ℃ under control during a hot water washing operation.
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