CN117344424B - Internal multistage high-yarn-strength jet vortex spinning process and application thereof - Google Patents
Internal multistage high-yarn-strength jet vortex spinning process and application thereof Download PDFInfo
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- CN117344424B CN117344424B CN202311617927.5A CN202311617927A CN117344424B CN 117344424 B CN117344424 B CN 117344424B CN 202311617927 A CN202311617927 A CN 202311617927A CN 117344424 B CN117344424 B CN 117344424B
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- 238000007382 vortex spinning Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 119
- 239000002131 composite material Substances 0.000 claims abstract description 109
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000009987 spinning Methods 0.000 claims abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 8
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 8
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 8
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 28
- 239000000047 product Substances 0.000 claims description 28
- 229920002678 cellulose Polymers 0.000 claims description 24
- 239000001913 cellulose Substances 0.000 claims description 24
- 239000002202 Polyethylene glycol Substances 0.000 claims description 22
- 229920001223 polyethylene glycol Polymers 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229920002292 Nylon 6 Polymers 0.000 claims description 11
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000011068 loading method Methods 0.000 claims description 10
- -1 polyethylene terephthalate Polymers 0.000 claims description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 241001589086 Bellapiscis medius Species 0.000 claims description 9
- 238000012805 post-processing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical group [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 238000004821 distillation Methods 0.000 claims description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 3
- 208000012886 Vertigo Diseases 0.000 description 16
- 239000000463 material Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005303 weighing Methods 0.000 description 6
- 239000004952 Polyamide Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/228—Stretching in two or more steps, with or without intermediate steps
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J3/00—Modifying the surface
- D02J3/12—Modifying the surface by removing projecting ends of fibres
- D02J3/14—Modifying the surface by removing projecting ends of fibres by shearing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses an internal multistage high-yarn-forming-strength jet vortex spinning process and application thereof, and belongs to the technical field of yarn spinning. The invention is used for solving the technical problems that the mechanical strength of yarn manufactured by vortex spinning yarn processing in the prior art needs to be further improved and a large number of fiber thread ends exist on the surface of the yarn, and the internal multistage high-yarn-strength jet vortex spinning process comprises the following steps: adding carboxymethyl cellulose, lactide, a catalyst and N, N-dimethylformamide into a three-neck flask protected by nitrogen, and reacting for 60-90min at the temperature of 140-150 ℃. The invention synthesizes the composite fiber, improves the breaking strength and breaking elongation of the yarn by improving the mechanical property of the composite fiber, and disperses the yarn entering the nozzle by improving the nozzle to prepare the yarn with uniform thickness, thereby improving the mechanical strength of the yarn and the glossiness of the surface of the yarn.
Description
Technical Field
The invention relates to the technical field of yarn spinning, in particular to an internal multistage high-yarn-forming-strength jet vortex spinning process and application thereof.
Background
Vortex spinning refers to that a fiber bundle after being drafted by a roller draft device is output from a front roller jaw and enters a spinning nozzle along a spiral fiber guide channel under the action of axial airflow at the inlet of the spinning nozzle. The fiber guiding channel has needle-shaped twisting preventing part at the outlet, and the fiber bundle is bent in the needle to maintain the fiber bundle in the state of no twist and introduced into the vortex chamber. The front end of the fiber bundle is pulled into a yarn channel in the spindle by the drag action of the formed yarn and twisted into the newly formed yarn to become a yarn core.
In the prior art, chinese patent publication No. CN102912491a specifically discloses a vortex tube internal structure is jet vortex spinning nozzle device of syllogic, including guide body, vortex tube, conical surface body, draw spool and fixed housing support, guide body and vortex tube cooperation are installed and are constituteed first partial nozzle in the front end copper cover, conical surface body and draw spool cooperation are installed and are constituteed the second partial nozzle in the rear end copper cover, first partial nozzle and second partial nozzle assemble in fixed housing support, its characterized in that: the inside design of vortex tube is three segmentation structures, and the one end opening of vortex tube fumarole is located on the outer periphery of vortex tube, and its other end opening is located the junction of first section and second section. The vortex tube has a sufficient space inside, so that the air flow can rotate more stably, and in addition, the air flow does not have the tendency of flowing back to the first section.
In the spinning process, after fibers enter the nozzle along the fiber conveying channel, the fibers directly move downwards along the guide needle, if a plurality of strands of fibers are compounded together, the fibers cannot be dispersed, the strands of fibers directly enter the central channel of the yarn guiding tube, the thickness of the spun yarns is uneven, the mechanical strength of the yarns is required to be further improved, when the fibers are spun into the yarns by vortex, fiber burrs often exist outside the yarns, the fiber burrs outside the yarns are easy to intertwine, and the adjacent yarns are easy to intertwine and knot.
In view of the technical drawbacks of this aspect, a solution is now proposed.
Disclosure of Invention
The invention aims to provide an internal multistage high-yarn-forming-strength jet vortex spinning process and application thereof, which are used for solving the technical problems that in the process of vortex spinning yarn forming in the prior art, a plurality of strands of fibers which are compounded together cannot be dispersed, the strands of fibers directly enter a central channel of a yarn guiding tube to cause uneven thickness of the yarn, the mechanical strength of spinning is required to be further improved, some fiber burrs exist outside the yarn, and the yarns are easy to wind and tie.
The aim of the invention can be achieved by the following technical scheme:
an internal multistage high-yarn-strength jet vortex spinning process comprises the following steps:
s1, adding carboxymethyl cellulose, lactide, a catalyst and N, N-dimethylformamide into a three-neck flask protected by nitrogen, increasing the temperature of the three-neck flask to 140-150 ℃, reacting for 60-90min, and performing post-treatment to obtain modified cellulose;
s2, uniformly mixing polyethylene glycol terephthalate, modified cellulose and polyethylene glycol to obtain a first mixture, uniformly mixing polyamide 6 and polyethylene glycol to obtain a second mixture, respectively adding the first mixture and the second mixture into two screw extruders of a composite spinning machine, extruding the first mixture by the screw extruders, spraying the first mixture by a spinneret plate, and cooling the first mixture by lateral blowing to obtain a composite fiber primary product;
s3, carrying out post-processing treatment on the primary product of the composite fiber to obtain the composite fiber;
s4, adding the composite fiber into a spinning machine, processing the composite fiber through a vortex spinning nozzle, then spraying out the composite fiber, and winding to prepare a composite yarn finished product, wherein the vortex spinning nozzle comprises a shell, and a yarn feeding section, a guide section, a vortex section and a yarn guiding section are sequentially arranged on the inner side of the shell from top to bottom; the yarn feeding section comprises a yarn guiding block, a guiding groove arranged in the center of the bottom of the yarn guiding block and a spiral yarn feeding groove which is arranged at the top of the yarn guiding block and communicated with the guiding groove, and a plurality of first air guiding grooves communicated with the guiding groove are arranged on the yarn guiding block; the vortex section comprises a vortex liner tube fixedly connected to the bottom of the yarn guiding block and a bundling rod fixedly connected to the bottom of the inner side of the shell and matched with the vortex liner tube, and a plurality of second air guide grooves are formed in the vortex liner tube; the guide section comprises a conical groove formed in the top of the inner side of the vortex liner tube and a guide needle fixedly connected to the center of the bottom of the yarn guiding block; the yarn guiding section comprises a yarn guiding groove vertically arranged on the bundling rod and an air duct which is arranged outside the bundling rod and communicated with the yarn guiding groove, and the yarn guiding groove is positioned under the guiding needle.
Further, the weight ratio of the carboxymethyl cellulose to the lactide to the catalyst to the N, N-dimethylformamide is 1:6:9:0.05, wherein the catalyst is stannous octoate, and the weight ratio of the polyethylene terephthalate to the modified cellulose is 3:1, wherein the weight ratio of the polyamide 6 to the polyethylene glycol is 2:1.
further, the post-processing operation of step S1 includes: and (3) after the reaction is completed, preserving the temperature of the three-mouth flask to 140-150 ℃, carrying out reduced pressure distillation until no liquid flows out, reducing the temperature of the three-mouth flask to room temperature, adding chloroform into the three-mouth flask, stirring for 50-80min, adding ethanol into the three-mouth flask, stirring for 30-50min, carrying out suction filtration, and transferring a filter cake into a drying oven with the temperature of 60-65 ℃ for drying for 8-10h to obtain the modified cellulose.
Further, in the step S2, the hole diameter of the spinneret plate is 0.3mm, the number of holes is 24, the length-diameter ratio of the two screw extruders is 25-30, the screw rotating speed is 25-35r/min, the temperature of a1 region of the screw extruder for loading the mixture I is 220-260 ℃, the temperature of a2 region is 260-300 ℃, the temperature of a3 region is 260-300 ℃, the temperature of a 4 region is 260-300 ℃, the temperature of a flange is 260-300 ℃, the temperature of a1 region of the screw extruder for loading the mixture II is 200-220 ℃, the temperature of a2 region is 220-240 ℃, the temperature of a3 region is 220-240 ℃, the temperature of a 4 region is 220-240 ℃, and the weight ratio of polyethylene terephthalate, modified cellulose and polyethylene glycol in the mixture I is 3:1:2, the weight ratio of polyamide 6 to polyethylene glycol in the mixture II is 2:1.
further, the post-processing in step S3 includes:
a1, drafting: transferring the composite fiber primary product into a multi-roller drawing machine for drawing, wherein the drawing is carried out for two times, the first drawing multiple is 2.1-2.6 times, the second drawing multiple is 1.1-1.5 times, and the temperature of the multi-roller drawing machine is set to 75-85 ℃ to obtain the drawn composite fiber;
a2, heat treatment: transferring the drawn composite fiber into an oven with the temperature of 90-100 ℃, preserving heat for 15-25min, naturally cooling to room temperature, and obtaining the composite fiber after heat treatment;
a3, twisting: and transferring the heat-treated composite fiber into a short fiber two-for-one twister for twisting to obtain the composite fiber.
Furthermore, the guide groove is of an annular structure, a spiral inclined plane is arranged at the top of the inner side of the guide groove, an air collecting cavity I of the annular structure is formed in the yarn guiding block, the air collecting cavity I is communicated with the inside of the shell through a channel I, and the air guide grooves I are arranged in an annular array with the axis of the yarn guiding block and are communicated with the air collecting cavity I.
Further, the bottom of the vortex liner tube is provided with a conical curved surface which is downwards arranged, the top of the bundling rod is provided with a conical surface which is matched with the conical curved surface, the inner side of the vortex liner tube is provided with a second gas collecting cavity with an annular structure, a plurality of second gas guide grooves are arranged in an annular array with the axis of the vortex liner tube and are mutually communicated with the second gas collecting cavity, the top of the second gas collecting cavity is provided with a second channel which is communicated with the inner part of the shell, and one side of the outer part of the shell is sleeved with a gas inlet pipe which is communicated with the shell.
Further, an air inlet hole which is mutually communicated with the yarn guiding groove is formed in the outer portion of one side of the bundling rod, the air inlet hole is obliquely downwards arranged towards the yarn guiding groove and forms an included angle of 15-20 degrees with a horizontal plane, one end, close to the bundling rod, of the air duct is fixedly connected with the air inlet hole, an installation groove is formed in the inner side of the yarn guiding groove, and a dehairing head assembly is installed in the inner side of the installation groove.
Further, the dehairing head assembly comprises two annular plates and a plurality of vertical plates fixedly connected between the two annular plates, wherein a plurality of scrapers are fixedly connected to one sides of the vertical plates, which are close to each other, and the scrapers are obliquely arranged.
An internal multistage high-yarn-strength jet vortex spinning process is applied to yarn spinning.
The invention has the following beneficial effects: when the composite yarn finished product is prepared, under the action of stannous octoate serving as a catalyst, stannous octoate firstly reacts with hydroxyl on the surface of cellulose to generate an alkoxytin coordination compound and caprylic acid, then lactide is inserted between alkoxy and tin to complete a coordination ring-opening reaction, chain growth is realized, in addition, flexible chain segment lactide is introduced onto a molecular chain, the acting force among groups is weakened, the crystallinity and molecular orientation of the molecular chain are improved, so that the toughness is improved, the modified cellulose, the polyethylene terephthalate, the polyamide 6 and the polyethylene glycol are subjected to melt mixing, the breaking strength of the composite fiber is effectively improved due to the addition of the polyamide 6 and the polyethylene terephthalate, and the polyethylene glycol is added into a mixing system as a chain extender to promote the compatibility of the modified cellulose, the polyethylene terephthalate and the polyamide 6, and the mechanical strength of the composite fiber is improved.
When the composite yarn finished product is prepared, the composite yarn finished product is stretched by carrying out drafting treatment on the composite fiber primary product, and after the drafting treatment, the fiber is subjected to heat treatment, so that the internal stress of the fiber is eliminated, the composite fiber has good rebound performance, the crimp shrinkage rate of the composite fiber is improved, after the drafting treatment, the composite fiber is twisted by a short fiber two-for-one twister, the softness of the composite fiber is improved, the fiber and the fiber can be better mixed together in the vortex spinning treatment process, and the breaking tensile strength of the composite yarn finished product is further improved.
During vortex spinning, under the action of vortex on the yarn guiding block, the composite fiber enters the vortex spinning nozzle along the yarn feeding groove and then circularly moves along the outer part of the guide needle after entering the vortex spinning nozzle along the yarn guiding groove, and under the action of vortex opposite to the yarn guiding block in the vortex liner, the uniform dispersion of the fiber is promoted, the bundle-shaped fiber moves downwards along the guide needle and enters the yarn guiding groove, and under the action of the vortex, the fiber section at the top of the yarn guiding groove is tightly attached to the top of the bundling rod downwards and deflects along with the rotating speed of the vortex at a high speed, so that the fiber section is quickly wound together to form a stable yarn-shaped structure after entering the yarn guiding groove, the mechanical strength of the yarn is improved, the compressed air flow enters the yarn guiding groove to convey the formed yarn to the outer part of the nozzle through the air guiding pipe, and meanwhile, a plurality of scrapers in the yarn guiding groove are driven to rotate, burrs outside the yarn are removed, and the fiber residues on the surface of the yarn are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional elevation view of a vortex spinning nozzle according to the present invention;
FIG. 2 is a schematic top cross-sectional view of the yarn guiding block of the present invention;
FIG. 3 is a schematic view of the overall structure of the guide block of the present invention;
FIG. 4 is a schematic view of the structure of the dehairing assembly according to the present invention.
In the figure: 1. a housing; 2. yarn guiding blocks; 201. a guide groove; 202. the first gas collecting chamber is; 203. a first channel; 204. an air guide groove I; 205. a yarn feeding groove; 3. a guide needle; 4. a vortex liner; 401. the gas collecting chamber II; 402. an air inlet pipe; 403. an air guide groove II; 404. a second channel; 5. a bundling rod; 501. a yarn guiding groove; 502. an air duct; 601. an annular plate; 602. a riser; 603. a scraper.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-4, the vortex spinning nozzle for an internal multistage high-yarn-forming-strength jet vortex spinning process provided by the embodiment comprises a shell 1, wherein a yarn feeding section, a guiding section, a vortex section and a yarn guiding section are sequentially arranged on the inner side of the shell 1 from top to bottom; the yarn feeding section comprises a yarn guiding block 2, a guiding groove 201 which is arranged in the center of the bottom of the yarn guiding block 2 and is of an annular structure, a spiral yarn feeding groove 205 which is arranged at the top of the yarn guiding block 2 and is communicated with the guiding groove 201, and a plurality of first air guiding grooves 204 which are communicated with the guiding groove 201 are arranged on the yarn guiding block 2; the top of the inner side of the guide groove 201 is provided with a spiral inclined plane, the yarn guiding block 2 is provided with an air collecting cavity I202 with an annular structure, the air collecting cavity I202 is mutually communicated with the inside of the shell 1 through a channel I203, and a plurality of air guiding grooves I204 are arranged in an annular array with the axis of the yarn guiding block 2 and are mutually communicated with the air collecting cavity I202.
The plurality of first air guide grooves 204 are horizontally arranged and have an included angle of 10 degrees with the radial direction of the first air collection chamber 202, high-pressure air enters the first air collection chamber 202 through the first channel 203 and is sprayed out of the plurality of first air guide grooves 204, clockwise rotating vortex is formed in the guide grooves 201, the composite fiber enters the guide grooves 201 through the yarn feeding grooves 205, and under the action of the clockwise rotating vortex and the inclined surface at the top of the guide grooves 201, the composite yarn moves clockwise downwards along the vortex direction.
The vortex section comprises a vortex liner tube 4 fixedly connected to the bottom of the yarn guiding block 2 and a bundling rod 5 fixedly connected to the bottom of the inner side of the shell 1 and matched with the vortex liner tube 4, and a plurality of air guide grooves II 403 are formed in the vortex liner tube 4; the guiding section comprises a conical groove formed at the top of the inner side of the vortex liner tube 4 and a guiding needle 3 fixedly connected to the center of the bottom of the yarn guiding block 2; the yarn guiding section comprises a yarn guiding groove 501 which is vertically arranged on the bundling rod 5 and an air duct 502 which is arranged outside the bundling rod 5 and is communicated with the yarn guiding groove 501, and the yarn guiding groove 501 is positioned under the guiding needle 3.
The bottom of the vortex liner tube 4 is provided with a conical curved surface which is downwards arranged, the top of the bundling rod 5 is provided with a conical surface which is matched with the conical curved surface, the inner side of the vortex liner tube 4 is provided with a second air collecting cavity 401 with an annular structure, a plurality of second air guide grooves 403 are arranged in an annular array with the axis of the vortex liner tube 4 and are mutually communicated with the second air collecting cavity 401, the top of the second air collecting cavity 401 is provided with a second channel 404 which is communicated with the inner part of the shell 1, and one side of the shell 1 is externally sleeved with an air inlet pipe 402 which is communicated with the shell 1.
The second air guide groove 403 forms an included angle of 10 degrees with the radial direction of the vortex liner tube 4, the second air guide groove 403 forms an included angle of 15 degrees with the horizontal plane, external high-pressure air enters the shell 1 through the air inlet pipe 402, compressed air is introduced into the second air collection cavity 401 through the second channel 404 and then is sprayed out of the second air guide grooves 403, a counter-clockwise rotating vortex is formed in the vortex liner tube 4, a turbulence section is formed on a conical groove at the inner top of the vortex liner tube 4 by the clockwise downward vortex and the counter-clockwise downward rotating vortex, a plurality of bunched composite fibers are dispersed, the composite fibers move downwards under the action of the downward vortex and are separated from the turbulence section, and under the action of the counter-clockwise downward rotating vortex and the guide needle 3, one end of the composite fiber enters the yarn guiding groove 501, and under the action of high-speed vortex which is anticlockwise downward in the vortex liner tube 4, one end of the composite yarn positioned outside the yarn guiding groove 501 rotates anticlockwise relative to the bundling rod 5 at high speed, so that a plurality of strands of composite fibers are wound into a yarn-shaped structure, flow regulating valves (not shown) are arranged on a first channel 203 and a second channel 404, and the pressure of air flow entering the first air collecting chamber 202 and the second air collecting chamber 401 is conveniently regulated through the flow regulating valves.
Example 2
Referring to fig. 1-4, in the vortex spinning nozzle for the internal multistage high-yarn-forming-strength jet vortex spinning process provided in this embodiment, an air inlet hole which is mutually communicated with a yarn guiding groove 501 is formed on the outer portion of one side of a bundling rod 5, the air inlet hole is obliquely downward arranged towards the yarn guiding groove 501 and has an included angle of 18 ° with a horizontal plane, one end, close to the bundling rod 5, of an air duct 502 is fixedly connected with the air inlet hole, an installation groove is formed in the inner side of the yarn guiding groove 501, two annular plates 601 are rotatably installed on the inner side of the installation groove, a plurality of vertical plates 602 which are vertically arranged are fixedly connected between the two annular plates 601, a plurality of scrapers 603 are fixedly connected to one sides, close to each other, of the plurality of scrapers 603 are obliquely arranged towards one side of the vertical plates 602.
The air duct 502 guides compressed air into the yarn guiding groove 501, and discharges the compressed air to the outside of the shell 1 through the bottom of the yarn guiding groove 501, forms air flow discharged to the outside of the shell 1, conveys the molded yarn to the bottom of the shell 1, and when conveying the yarn to the outside of the shell 1, the air flowing rapidly along the direction of the yarn guiding groove 501 blows the plurality of scrapers 603 to rotate, cleans the outer fiber burrs of the yarn conveyed to the outside of the shell 1, avoids burrs on the surface of the yarn, and improves the smoothness of the fiber surface.
Example 3
Referring to fig. 1-4, the present embodiment provides an internal multistage high-strength air jet vortex spinning process, which includes the following steps:
s1, preparing modified cellulose
Weighing the following components in parts by weight: 30g of carboxymethyl cellulose, 160g of lactide, 1.5g of stannous octoate and 270g of N, N-dimethylformamide are added into a three-neck flask protected by nitrogen, the temperature of the three-neck flask is increased to 140 ℃, the reaction is completed, the three-neck flask is kept at 140 ℃ and distilled under reduced pressure until no liquid flows out, the temperature of the three-neck flask is reduced to room temperature, 300g of chloroform is added into the three-neck flask, stirring is carried out for 50min, 900g of ethanol is added into the three-neck flask, stirring is carried out for 30min, suction filtration is carried out, and a filter cake is transferred into a drying oven with the temperature of 60 ℃ for drying for 8h, thus obtaining modified cellulose;
s2, preparing a composite fiber primary product
Weighing 120g of polyethylene terephthalate, 40g of modified cellulose and 80g of polyethylene glycol according to parts by weight, uniformly mixing to obtain a first mixed material, uniformly mixing 100g of polyamide and 50g of polyethylene glycol to obtain a second mixed material, respectively adding the first mixed material and the second mixed material into two screw extruders of a composite spinning machine, wherein the length-diameter ratio of the two screw extruders is 25, the screw rotating speed is 25r/min, the temperature of a1 area of the screw extruder for loading the first mixed material is 220 ℃, the temperature of a2 area is 260 ℃, the temperature of a3 area is 260 ℃, the temperature of a 4 area is 260 ℃, the temperature of a flange is 260 ℃, the temperature of the 1 area of the screw extruder for loading the second mixed material is 200 ℃, the temperature of the 2 area is 220 ℃, the temperature of the 3 area is 220 ℃, the flange temperature is 220 ℃, extruding by the screw extruder, and then spraying out by a spinneret plate, and cooling by lateral blowing to obtain a primary composite fiber product, wherein the aperture of the spinneret plate is 0.3mm, and the number of holes is 24;
s3, post-processing of composite fiber primary products
Drawing: transferring the composite fiber primary product into a multi-roller drawing machine for drawing, wherein the drawing is carried out in two steps, the first drawing multiple is 2.1 times, the second drawing multiple is 1.1 times, and the temperature of the multi-roller drawing machine is set to 75 ℃ to obtain the drawn composite fiber; and (3) heat treatment: transferring the drafted composite fiber into an oven with the temperature of 90 ℃, preserving heat for 15min, and naturally reducing the temperature to room temperature to obtain the composite fiber after heat treatment; twisting: transferring the heat-treated composite fiber into a short fiber two-for-one twister for twisting to obtain the composite fiber, wherein the type of a spindle in the short fiber two-for-one twister is 146, the number of spindles per section is 16, the spindle distance is 225mm, the twisting direction is S or Z, the spindle speed is 5000r/min, and the winding stroke is 152mm;
s4, spinning the composite fiber into yarn
The composite fiber is added into a spinning machine, the composite fiber enters the shell 1 of the vortex spinning nozzle through the yarn feeding groove 205, after entering the conical groove at the inner side top of the vortex liner 4 along the guide groove 201 to be disturbed, the composite yarn moves downwards along the guide needle 3, part of the composite yarn enters the yarn guiding groove 501 along with the composite yarn flow, and along with the vortex rotating downwards at a high speed in the vortex section, one end of the composite yarn which does not enter the yarn guiding groove 501 is attached to the top surface of the bundling rod 5 to rotate at a high speed, so that the composite yarn can be tightly wound together, compressed air flows enter the yarn guiding groove 501 through the air duct 502 and is discharged from the bottom of the yarn guiding groove 501 to form air flow discharged outwards, and the formed yarn is ejected from the bottom of the vortex nozzle to be wound to form a composite yarn finished product.
Example 4
Referring to fig. 1-4, the present embodiment provides an internal multistage high-strength air jet vortex spinning process, which includes the following steps:
s1, preparing modified cellulose
Weighing the following components in parts by weight: 30g of carboxymethyl cellulose, 160g of lactide, 1.5g of stannous octoate and 270g of N, N-dimethylformamide are added into a three-neck flask protected by nitrogen, the temperature of the three-neck flask is increased to 145 ℃, the reaction is completed, the three-neck flask is kept at 145 ℃ for 75 minutes, the pressure is reduced, distillation is carried out until no liquid flows out, the temperature of the three-neck flask is reduced to room temperature, 300g of chloroform is added into the three-neck flask, stirring is carried out for 70 minutes, 900g of ethanol is added into the three-neck flask, stirring is carried out for 40 minutes, suction filtration is carried out, and a filter cake is transferred into a drying oven with the temperature of 63 ℃ for drying for 9 hours, thus obtaining modified cellulose;
s2, preparing a composite fiber primary product
Weighing 120g of polyethylene terephthalate, 40g of modified cellulose and 80g of polyethylene glycol according to parts by weight, uniformly mixing to obtain a first mixed material, uniformly mixing 100g of polyamide and 50g of polyethylene glycol to obtain a second mixed material, respectively adding the first mixed material and the second mixed material into two screw extruders of a composite spinning machine, wherein the length-diameter ratio of the two screw extruders is 28, the screw rotating speed is 30r/min, the temperature of a1 area of the screw extruder for loading the first mixed material is 240 ℃, the temperature of a2 area is 280 ℃, the temperature of a3 area is 280 ℃, the temperature of a 4 area is 280 ℃, the temperature of a flange is 280 ℃, the temperature of a1 area of the screw extruder for loading the second mixed material is 210 ℃, the temperature of a3 area is 230 ℃, the temperature of a flange is 230 ℃, extruding by the screw extruder, and then spraying out by a spinneret plate, and cooling by lateral blowing to obtain a primary composite fiber product, wherein the aperture of the spinneret plate is 0.3mm, and the number of holes is 24 holes;
s3, post-processing of composite fiber primary products
Drawing: transferring the composite fiber primary product into a multi-roller drawing machine for drawing, wherein the drawing is carried out in two steps, the first drawing multiple is 2.4 times, the second drawing multiple is 1.3 times, and the temperature of the multi-roller drawing machine is set to 80 ℃ to obtain the drawn composite fiber; and (3) heat treatment: transferring the drawn composite fiber into an oven with the temperature of 95 ℃, preserving heat for 20min, and naturally reducing the temperature to room temperature to obtain the composite fiber after heat treatment; twisting: transferring the heat-treated composite fiber into a short fiber two-for-one twister for twisting to obtain the composite fiber, wherein the type of a spindle in the short fiber two-for-one twister is 146, the number of spindles per section is 16, the spindle distance is 225mm, the twisting direction is S or Z, the spindle speed is 6500r/min, and the winding stroke is 152mm;
s4, spinning the composite fiber into yarn
The composite fiber is added into a spinning machine, the composite fiber enters the shell 1 of the vortex spinning nozzle through the yarn feeding groove 205, after entering the conical groove at the inner side top of the vortex liner 4 along the guide groove 201 to be disturbed, the composite yarn moves downwards along the guide needle 3, part of the composite yarn enters the yarn guiding groove 501 along with the composite yarn flow, and along with the vortex rotating downwards at a high speed in the vortex section, one end of the composite yarn which does not enter the yarn guiding groove 501 is attached to the top surface of the bundling rod 5 to rotate at a high speed, so that the composite yarn can be tightly wound together, compressed air flows enter the yarn guiding groove 501 through the air duct 502 and is discharged from the bottom of the yarn guiding groove 501 to form air flow discharged outwards, and the formed yarn is ejected from the bottom of the vortex nozzle to be wound to form a composite yarn finished product.
Example 5
Referring to fig. 1-4, the present embodiment provides an internal multistage high-strength air jet vortex spinning process, which includes the following steps:
s1, preparing modified cellulose
Weighing the following components in parts by weight: 30g of carboxymethyl cellulose, 160g of lactide, 1.5g of stannous octoate and 270g of N, N-dimethylformamide are added into a three-neck flask protected by nitrogen, the temperature of the three-neck flask is increased to 150 ℃, the reaction is completed, the three-neck flask is kept at 150 ℃ and distilled under reduced pressure until no liquid flows out, the temperature of the three-neck flask is reduced to room temperature, 300g of chloroform is added into the three-neck flask, stirring is carried out for 80min, 900g of ethanol is added into the three-neck flask, stirring is carried out for 50min, suction filtration is carried out, and a filter cake is transferred into a drying oven with the temperature of 65 ℃ for drying for 10h, thus obtaining modified cellulose;
s2, preparing a composite fiber primary product
Weighing 120g of polyethylene terephthalate, 40g of modified cellulose and 80g of polyethylene glycol according to parts by weight, uniformly mixing to obtain a first mixture, uniformly mixing 100g of polyamide with 50g of polyethylene glycol to obtain a second mixture, respectively adding the first mixture and the second mixture into two screw extruders of a composite spinning machine, wherein the length-diameter ratio of the two screw extruders is 30, the screw rotating speed is 35r/min, the temperature of a1 area of the screw extruder for loading the first mixture is 260 ℃, the temperature of a2 area is 300 ℃, the temperature of a3 area is 300 ℃, the temperature of a 4 area is 300 ℃, the temperature of a flange is 300 ℃, the temperature of the 1 area of the screw extruder for loading the second mixture is 220 ℃, the temperature of the 2 area is 240 ℃, the temperature of the 3 area is 240 ℃, the temperature of the flange is 240 ℃, extruding by the screw extruder, and then spraying out by a spinneret plate, and cooling by lateral blowing to obtain a composite fiber primary product, wherein the aperture of the spinneret plate is 0.3mm, and the number of holes is 24 holes;
s3, post-processing of composite fiber primary products
Drawing: transferring the composite fiber primary product into a multi-roller drawing machine for drawing, wherein the drawing is carried out in two steps, the first drawing multiple is 2.6 times, the second drawing multiple is 1.5 times, and the temperature of the multi-roller drawing machine is set to be 85 ℃ to obtain the drawn composite fiber; and (3) heat treatment: transferring the drawn composite fiber into an oven with the temperature of 100 ℃, preserving heat for 25min, and naturally reducing the temperature to room temperature to obtain the composite fiber after heat treatment; twisting: transferring the heat-treated composite fiber into a short fiber two-for-one twister for twisting to obtain the composite fiber, wherein the type of a spindle in the short fiber two-for-one twister is 146, the number of spindles per section is 16, the spindle distance is 225mm, the twisting direction is S or Z, the spindle speed is 8000r/min, and the winding stroke is 152mm;
s4, spinning the composite fiber into yarn
The composite fiber is added into a spinning machine, the composite fiber enters the shell 1 of the vortex spinning nozzle through the yarn feeding groove 205, after entering the conical groove at the inner side top of the vortex liner 4 along the guide groove 201 to be disturbed, the composite yarn moves downwards along the guide needle 3, part of the composite yarn enters the yarn guiding groove 501 along with the composite yarn flow, and along with the vortex rotating downwards at a high speed in the vortex section, one end of the composite yarn which does not enter the yarn guiding groove 501 is attached to the top surface of the bundling rod 5 to rotate at a high speed, so that the composite yarn can be tightly wound together, compressed air flows enter the yarn guiding groove 501 through the air duct 502 and is discharged from the bottom of the yarn guiding groove 501 to form air flow discharged outwards, and the formed yarn is ejected from the bottom of the vortex nozzle to be wound to form a composite yarn finished product.
Comparative example 1
The present comparative example differs from example 5 in that the modified cellulose was replaced with cellulose in equal amount in step S2.
Comparative example 2
The present comparative example differs from example 5 in that polyamide 6 was not added in step S2.
Comparative example 3
The present comparative example differs from example 5 in that the drawing process and the heat treatment step in step S3 are eliminated.
Performance test:
the yarns prepared in examples 3 to 5 and comparative examples 1 to 3 were tested for linear density, crimp shrinkage, breaking strength and elongation at break, wherein the linear density was tested with reference to standard GB/T14343-2008 "chemical fiber filament yarn density test method", the crimp shrinkage was tested with reference to standard GB/T6506-2017 "synthetic fiber textured yarn crimp performance test method", and the breaking strength and elongation at break were tested with reference to standard GB/T3916-2013 "determination of individual yarn breaking strength and elongation at break of textile package yarn (CRE method), specific test results are shown in the following table:
from the analysis of the performance test data in the above table, it is known that:
in the vortex spinning processing process, the composite fiber is prepared by carrying out melt mixing on the modified hydroxymethyl cellulose, polyethylene glycol terephthalate, polyamide 6 and polyethylene glycol, so that the mechanical strength of the composite fiber is improved, and then a plurality of sections of air injection chambers are arranged in the nozzle, so that the composite fiber is rapidly wound together to form yarn after being uniformly dispersed in the nozzle, the linear density of the yarn is effectively improved, and the breaking strength, the breaking elongation and the curling shrinkage of the yarn are improved, and fiber burrs on the surface of the yarn can be removed, so that the yarn is prevented from winding and knotting.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. An internal multistage high-yarn-strength jet vortex spinning process is characterized by comprising the following steps of:
s1, adding carboxymethyl cellulose, lactide, a catalyst and N, N-dimethylformamide into a three-neck flask protected by nitrogen, raising the temperature of the three-neck flask to 140-150 ℃, reacting for 60-90min, and then performing post-treatment to obtain modified cellulose;
s2, uniformly mixing polyethylene glycol terephthalate, modified cellulose and polyethylene glycol to obtain a first mixture, uniformly mixing polyamide 6 and polyethylene glycol to obtain a second mixture, respectively adding the first mixture and the second mixture into two screw extruders of a composite spinning machine, extruding the first mixture by the screw extruders, spraying the first mixture by a spinneret plate, and cooling the first mixture by lateral blowing to obtain a composite fiber primary product;
s3, carrying out post-processing treatment on the primary product of the composite fiber to obtain the composite fiber;
s4, adding the composite fiber into a spinning machine, processing the composite fiber through a vortex spinning nozzle, then spraying out the composite fiber, and winding to prepare a composite yarn finished product, wherein the vortex spinning nozzle comprises a shell (1), and a yarn feeding section, a guide section, a vortex section and a yarn guiding section are sequentially arranged on the inner side of the shell (1) from top to bottom;
the yarn feeding section comprises a yarn guiding block (2), a guiding groove (201) arranged at the center of the bottom of the yarn guiding block (2) and a spiral yarn feeding groove (205) arranged at the top of the yarn guiding block (2) and communicated with the guiding groove (201), wherein a plurality of first air guiding grooves (204) communicated with the guiding groove (201) are formed in the yarn guiding block (2);
the vortex section comprises a vortex liner tube (4) fixedly connected to the bottom of the yarn guiding block (2) and a bundling rod (5) fixedly connected to the bottom of the inner side of the shell (1) and matched with the vortex liner tube (4), and a plurality of second air guide grooves (403) are formed in the vortex liner tube (4);
the guiding section comprises a conical groove formed in the top of the inner side of the vortex liner tube (4) and a guiding needle (3) fixedly connected to the center of the bottom of the yarn guiding block (2);
the yarn guiding section comprises a yarn guiding groove (501) which is vertically arranged on the bundling rod (5) and an air duct (502) which is arranged outside the bundling rod (5) and is communicated with the yarn guiding groove (501), and the yarn guiding groove (501) is positioned under the guiding needle (3);
the yarn guiding device comprises a yarn guiding block (2), a yarn collecting cavity I (202) and a plurality of air guiding grooves (204), wherein the yarn guiding groove (201) is of an annular structure, a spiral inclined plane is arranged at the top of the inner side of the yarn guiding groove (201), the yarn guiding block (2) is provided with the air collecting cavity I (202) of the annular structure, the air collecting cavity I (202) is communicated with the inside of a shell (1) through a channel I (203), and the plurality of air guiding grooves (204) are arranged in an annular array with the axis of the yarn guiding block (2) and are communicated with the air collecting cavity I (202);
the bottom of the vortex liner tube (4) is provided with a conical curved surface which is downwards arranged, the top of the bundling rod (5) is provided with a conical surface which is matched with the conical curved surface, the inner side of the vortex liner tube (4) is provided with a gas collection cavity II (401) with an annular structure, a plurality of gas guide grooves II (403) are arranged in an annular array with the axis of the vortex liner tube (4) and are mutually communicated with the gas collection cavity II (401), the top of the gas collection cavity II (401) is provided with a channel II (404) which is communicated with the inside of the shell (1), and one side of the shell (1) is externally sleeved with a gas inlet pipe (402) which is communicated with the shell (1);
an air inlet hole which is communicated with the yarn guiding groove (501) is formed in the outer part of one side of the bundling rod (5), the air inlet hole is obliquely downwards arranged towards the yarn guiding groove (501) and forms an included angle of 15-20 degrees with the horizontal plane, one end, close to the bundling rod (5), of the air duct (502) is fixedly connected with the air inlet hole, an installation groove is formed in the inner side of the yarn guiding groove (501), and a dehairing head assembly is installed in the inner side of the installation groove;
the dehairing head assembly comprises two annular plates (601) and a plurality of vertical plates (602) fixedly connected between the two annular plates (601), wherein a plurality of scrapers (603) are fixedly connected to one sides, close to each other, of the vertical plates (602), and the scrapers (603) are obliquely arranged.
2. The internal multistage high-strength air jet vortex spinning process according to claim 1, wherein the weight ratio of carboxymethyl cellulose to lactide to catalyst to N, N-dimethylformamide is 1:6:9:0.05, the catalyst is stannous octoate, the weight ratio of polyethylene terephthalate to modified cellulose is 3:1, and the weight ratio of polyamide 6 to polyethylene glycol is 2:1.
3. An internal multistage high tenacity air jet vortex spinning process according to claim 1 wherein the post-treatment operation of step S1 comprises: and (3) after the reaction is completed, preserving the temperature of the three-mouth flask to 140-150 ℃, carrying out reduced pressure distillation until no liquid flows out, reducing the temperature of the three-mouth flask to room temperature, adding chloroform into the three-mouth flask, stirring for 50-80min, adding ethanol into the three-mouth flask, stirring for 30-50min, carrying out suction filtration, and transferring a filter cake into a drying oven with the temperature of 60-65 ℃ for drying for 8-10h to obtain the modified cellulose.
4. The internal multistage high-strength jet vortex spinning process according to claim 1, wherein in the step S2, the spinneret aperture is 0.3mm, the number of holes is 24 holes, the length-diameter ratio of two screw extruders is 25-30, the screw rotation speed is 25-35r/min, the temperature of the 1 zone of the screw extruder for loading the mixture I is 220-260 ℃, the temperature of the 2 zone is 260-300 ℃, the temperature of the 3 zone is 260-300 ℃, the temperature of the 4 zone is 260-300 ℃, the flange temperature is 260-300 ℃, the temperature of the 1 zone of the screw extruder for loading the mixture II is 200-220 ℃, the temperature of the 2 zone is 220-240 ℃, the temperature of the 3 zone is 220-240 ℃, the temperature of the 4 zone is 220-240 ℃, the weight ratio of polyethylene terephthalate, modified cellulose and polyethylene glycol in the mixture I is 3:1:2, and the weight ratio of polyamide 6 to polyethylene glycol in the mixture II is 2:1.
5. An internal multistage high tenacity air jet vortex spinning process according to claim 1 wherein the post-processing in step S3 comprises:
a1, drafting: transferring the composite fiber primary product into a multi-roller drawing machine for drawing, wherein the drawing is carried out for two times, the first drawing multiple is 2.1-2.6 times, the second drawing multiple is 1.1-1.5 times, and the temperature of the multi-roller drawing machine is set to 75-85 ℃ to obtain the drawn composite fiber;
a2, heat treatment: transferring the drawn composite fiber into an oven with the temperature of 90-100 ℃, preserving heat for 15-25min, naturally cooling to room temperature, and obtaining the composite fiber after heat treatment;
a3, twisting: and transferring the heat-treated composite fiber into a short fiber two-for-one twister for twisting to obtain the composite fiber.
6. An application of an internal multistage high-yarn-strength jet vortex spinning process, characterized in that the internal multistage high-yarn-strength jet vortex spinning process according to any one of claims 1 to 5 is applied to yarn spinning.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912491A (en) * | 2012-11-02 | 2013-02-06 | 东华大学 | Air-jet vortex spinning nozzle device with vortex tube having three-sectional interior structure |
| CN107503004A (en) * | 2017-07-25 | 2017-12-22 | 东华大学 | A kind of air injection air vortex spinning apparatus and method for producing mental core-spun yarn |
| CN107916474A (en) * | 2016-10-05 | 2018-04-17 | 里特机械公司 | Method for the fibre guide element and operation sir jet spinning machines of sir jet spinning machines spinning jet nozzle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005045703A1 (en) * | 2005-09-19 | 2007-03-22 | Wilhelm Stahlecker Gmbh | Air jet unit for an air jet spinning device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912491A (en) * | 2012-11-02 | 2013-02-06 | 东华大学 | Air-jet vortex spinning nozzle device with vortex tube having three-sectional interior structure |
| CN107916474A (en) * | 2016-10-05 | 2018-04-17 | 里特机械公司 | Method for the fibre guide element and operation sir jet spinning machines of sir jet spinning machines spinning jet nozzle |
| CN107503004A (en) * | 2017-07-25 | 2017-12-22 | 东华大学 | A kind of air injection air vortex spinning apparatus and method for producing mental core-spun yarn |
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