CN111058109B - Preparation method of swimsuit fabric - Google Patents

Preparation method of swimsuit fabric Download PDF

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Publication number
CN111058109B
CN111058109B CN201911386290.7A CN201911386290A CN111058109B CN 111058109 B CN111058109 B CN 111058109B CN 201911386290 A CN201911386290 A CN 201911386290A CN 111058109 B CN111058109 B CN 111058109B
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parts
trilobal
modified pet
ptt
swimsuit fabric
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CN111058109A (en
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陈瑞
尹立新
杨超明
王雪
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Jiangsu Hengli Chemical Fiber Co Ltd
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Jiangsu Hengli Chemical Fiber Co Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
    • 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
    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/45—Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic System; Aluminates
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    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
    • D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
    • 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
    • D06M13/10—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 oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • D06M13/148—Polyalcohols, e.g. glycerol or glucose
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • 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
    • D06M13/10—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 oxygen
    • D06M13/152—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 oxygen having a hydroxy group bound to a carbon atom of a six-membered aromatic ring
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    • 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
    • D06M13/10—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 oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/228—Cyclic esters, e.g. lactones
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
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    • 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
    • D06M2101/32—Polyesters
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    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
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    • D10B2501/00—Wearing apparel

Abstract

The invention relates to a method for preparing swimsuit fabric, which comprises the following steps: in the process of preparing circular parallel composite fibers from modified PET (containing antibacterial agent) and PTT according to the FDY process, the spinneret orifices on the spinneret plate are changed into trilobal from circular, circular blowing cooling is adopted, the arrangement of the trilobal spinneret orifices on the spinneret plate is controlled to meet certain conditions, and then relaxation heat treatment is carried out to obtain elastic polyester fibers; then, the raw materials are used for carrying out anti-oxidation finishing (the anti-oxidation finishing liquid is attached to the elastic polyester fibers in an electrostatic spraying mode (the distance is 15-50 mm, the voltage is 30-100V), then microwave treatment is carried out (the frequency is 80-150 MHZ, and the time is 10-15 min)) → spinning → weaving → anti-ultraviolet finishing, and then the swimsuit fabric is prepared; elastic elongation gamma of the swimsuit fabric1133 to 138% of an elastic recovery rate of gamma298-100%.

Description

Preparation method of swimsuit fabric
Technical Field
The invention belongs to the technical field of textile fabrics, and relates to a method for preparing swimsuit fabrics.
Background
Swimsuits generally adopt multi-material mixed-woven fabrics, and the most common is nylon-ammonia mixing and polyester-ammonia mixing. The spandex is not used independently generally, but is applied to the fabric in a proper amount to improve the tensile property of the fabric. The lycra produced by the original DuPont company in the United states can be stretched to 4-7 times of the original length, and the original length can be quickly recovered after external force is released; after the blended yarn is blended with various fibers, the fabric can be kept to be attached to the body; the content of spandex in the swimsuit is about 15-20%, so that the swimsuit can stretch freely along with the body movement. If the proportion of the spandex is further increased, the dimensional stability of the fabric is poor, because the spandex can cause molecular chains in the spandex molecular chains to break or slide in heat treatment and washing protection, and the strength and elastic recovery of the spandex are reduced; meanwhile, the conventional spandex is not chlorine-resistant, and the swimwear needs to select chlorine-resistant spandex.
Therefore, the development of the preparation method of the swimsuit fabric with good and stable elastic recovery rate is of great significance.
Disclosure of Invention
The invention provides a preparation method of swimsuit fabric, and aims to solve the problem that how to endow the fabric with better elastic recovery rate when spandex is not suitable when swimsuit fabric is woven in the prior art.
In order to achieve the purpose, the invention adopts the following scheme:
a method for preparing swimsuit fabric is made of elastic polyester fibers and comprises the following process flows: antioxidant finishing → spinning → weaving → uvioresistant finishing;
the preparation process of the elastic polyester fiber comprises the following steps:
in the process of preparing circular parallel composite fibers from modified PET and PTT according to the FDY process, the spinneret orifices on the spinneret plate are changed into trilobal from circular, circular air blowing is adopted for cooling, the arrangement of the trilobal spinneret orifices on the spinneret plate is controlled to meet certain conditions, FDY filaments are prepared, and the FDY filaments are subjected to relaxation heat treatment to obtain elastic polyester fibers;
the molecular chain of the modified PET consists of a polyethylene terephthalate chain segment and a PTMG chain segment; antibacterial agents are dispersed among molecular chains of the modified PET; according to the invention, PET is modified, PTMG chain segments are introduced into the molecular chain of the PET, so that the elasticity of the polyester fiber is improved, and meanwhile, the antibacterial property of the polyester fiber is improved by introducing antibacterial agents, so that the elastic polyester fiber is obtained;
the length ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.1-1.4: 2.0-2.5, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the process of antioxidant finishing comprises the following steps: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the electrostatic spraying distance is 15-50 mm, and the voltage is 30-100V; the frequency of the microwave treatment is 80-150 MHz, and the time is 10-15 min.
The preferable technical scheme is as follows:
according to the preparation method of the swimsuit fabric, the mass ratio of the modified PET to the PTT is 50: 50.
According to the preparation method of the swimsuit fabric, in the process of preparing the modified PET, the addition amount of the PTMG is 8-12 wt% of the addition amount of the polyethylene terephthalate; the antibacterial agent is a silver-based antibacterial agent, and the content of silver ions in the modified PET is 100-200 ppm.
According to the preparation method of the swimsuit fabric, the intrinsic viscosity of the modified PET is 0.60-0.65 dL/g, and the temperature of a spinning manifold corresponding to the modified PET is 280-285 ℃; the intrinsic viscosity of the PTT is 1.10-1.21 dL/g; the temperature of the spinning beam corresponding to the PTT is 270-274 ℃.
According to the preparation method of the swimsuit fabric, the parameters of the FDY process are as follows: the spinning temperature is 275-278 ℃, the cooling temperature is 20-25 ℃, the cooling air speed is 0.30-0.50 m/s, the one-roller speed is 1800-2000 m/min, the one-roller temperature is 85-95 ℃, the two-roller speed is 3500-3700 m/min, the two-roller temperature is 170-180 ℃, and the winding speed is 3430-3610 m/min.
According to the preparation method of the swimsuit fabric, the temperature of the relaxation heat treatment is 90-120 ℃, and the time is 20-30 min; the elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT.
According to the preparation method of the swimsuit fabric, before relaxation heat treatment, the breaking strength of the elastic polyester fiber is more than or equal to 2.7cN/dtex, the elongation at break is 40.0 +/-5.0%, and the total titer is 100-150 dtex.
According to the preparation method of the swimsuit fabric, after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape, the crimp shrinkage rate is 51-54%, the crimp stability is 86-90%, the shrinkage elongation is 82-89%, and the crimp elastic recovery rate is 83-87%.
According to the preparation method of the swimsuit fabric, the anti-ultraviolet finishing agent consists of 10-15 parts of nano titanium dioxide, 1-3 parts of phosphorous acid, 2-5 parts of polyethylene and 4-10 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 8-10 parts by weight of butanediol, 3-5 parts by weight of aluminum oxide, 5-6 parts by weight of softening oil, 15-20 parts by weight of ascorbic acid, 10-30 parts by weight of dibutyl hydroxy toluene and 0-15 parts by weight of butyl hydroxy anisol.
In the preparation method of the swimsuit fabric, the gram weight of the swimsuit fabric is 90-100 g/m2Elastic elongation gamma1133 to 138% of an elastic recovery rate of gamma298 to 100% (elastic elongation gamma)1And elastic recovery rate gamma2The test method of (1) is the same as the document' Nie Xiao Ling, Nie Caiyun, Liu Chi, Fabric elasticity test and classification thereof [ J ]]Guangxi textile technology, 2009,38(1):20-40. ").
The principle of the invention is as follows:
in the parallel composite spinning of the invention, the contact surfaces of the modified PET and the PTT when the modified PET and the PTT flow in the guide holes of the trilobal spinneret holes are mutually parallel (the apparent viscosities of the modified PET and the PTT are close and the contact surfaces of the modified PET and the PTT are approximately planes) and a boundary line is formed between two different melts, because all the trilobal spinneret holes are distributed in concentric circles, the central line of the shortest leaf of each trilobal spinneret hole passes through the center of the circle and points away from the center of the circle, and the monofilaments extruded from different spinneret holes on the same spinneret plate are different, wherein the difference is as follows: in the spinning process, the spinning pressure and the melt mass ratio are constant, the mass ratio of the melt in each spinneret hole is the same, but because the pointing direction of the shortest leaf in the trefoil and the included angle of the boundary line of different melts in the guide hole are different, the contact surface area of different melts in different monofilaments is different (namely, the trefoil is divided into two parallel parts by an imaginary line intersecting the trefoil, one part corresponds to PET, the other part corresponds to PTT, and the contact surface of the two parts is different in size in the cross section), and further, after the yarn is subjected to heat treatment, the elastic polyester fiber has a three-dimensional curling shape due to the difference of the heat shrinkage rates of the PET and the PTT.
Because the elasticity generated by the three-dimensional curling performance of the invention is different from that of spandex, the spandex can deform in processing and use, and the elasticity of the spandex cannot be influenced under normal washing and use conditions because the spandex is caused by the difference of the thermal shrinkage rate differences of the two materials.
In addition, in the process of preparing the fabric by the two-component composite fiber in the prior art, the curling direction is consistent, stress concentration can be caused, and the fabric is not flat.
Has the advantages that:
(1) according to the preparation method of the swimsuit fabric, the trefoil spinneret orifices and the parallel composite spinning process are adopted, the arrangement mode of the spinneret orifices is controlled, the three-dimensional self-curling performance of the elastic polyester fiber is realized, and the curling degree of each monofilament is different;
(2) according to the swimsuit fabric, due to the fact that the curling degrees of all the monofilaments in the elastic polyester fibers are different, the problem of stress concentration can be solved in the application process, the fabric is prevented from being uneven, meanwhile, the problem that elasticity of spandex and the like is reduced in the use process cannot exist, the preparation method is simple, and the application range is wide.
Drawings
FIG. 1 is a schematic view of the shape of a trilobal spinneret orifice of the present invention;
FIG. 2 is a schematic view of the distribution of the orifices of the present invention on a spinneret.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The shape of the trilobal spinneret orifice and the distribution schematic diagram of the spinneret orifice on the spinneret plate are shown in figures 1 and 2, the spinneret orifice on the spinneret plate is trilobal, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.1-1.4: 2.0-2.5, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size; the arrangement of the trilobal spinneret orifices on the spinneret plate is as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest blade of each trilobal spinneret orifice passes through the circle center and points away from the circle center.
Fig. 1 and 2 are merely schematic and are not intended to limit the present invention.
Example 1
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 10wt percent of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.6dL/g, and the content of silver ions is 115 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.17dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at the temperature of 97 ℃ for 25min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 275 ℃, the temperature of a spinning box body corresponding to the modified PET is 280 ℃, the temperature of a spinning box body corresponding to the PTT is 272 ℃, the cooling temperature is 20 ℃, the cooling wind speed is 0.35m/s, the first roller speed is 1890m/min, the first roller temperature is 85 ℃, the second roller speed is 3540m/min, the second roller temperature is 176 ℃, and the winding speed is 3440 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.1:2.0, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.5:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.78cN/dtex, the breaking elongation is 42 percent, and the total titer is 140 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp shrinkage of 51%, a crimp stability of 90%, a shrinkage elongation of 82%, and a crimp elastic recovery of 83%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 30mm, and the voltage is 85V; the frequency of the microwave treatment is 120MHZ, and the time is 10 min;
the anti-ultraviolet finishing agent consists of 12 parts of nano titanium dioxide, 2 parts of phosphorous acid, 4 parts of polyethylene and 10 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 8 parts of butanediol, 4 parts of aluminum oxide, 6 parts of softening oil, 20 parts of ascorbic acid and 10 parts of dibutyl hydroxy toluene in parts by weight;
the gram weight of the prepared swimsuit fabric is 93g/m2Elastic elongation gamma1138% elastic recovery rate γ2The content was 99%.
Example 2
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 9wt percent of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.61dL/g, and the content of silver ions is 200 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.21dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at the temperature of 110 ℃ for 22min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 277 ℃, the temperature of a spinning box body corresponding to the modified PET is 281 ℃, the temperature of a spinning box body corresponding to the PTT is 274 ℃, the cooling temperature is 23 ℃, the cooling air speed is 0.4m/s, the first roller speed is 1810m/min, the first roller temperature is 95 ℃, the two roller speed is 3500m/min, the two roller temperature is 180 ℃, and the winding speed is 3400 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.2:2.4, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.7:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.83cN/dtex, the breaking elongation is 37 percent, and the total titer is 122 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp shrinkage of 51%, a crimp stability of 90%, a shrinkage elongation of 87%, and a crimp elastic recovery of 83%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 25mm, and the voltage is 90V; the frequency of the microwave treatment is 130MHZ, and the time is 10 min;
the anti-ultraviolet finishing agent consists of 12 parts of nano titanium dioxide, 2 parts of phosphorous acid, 4 parts of polyethylene and 7 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 10 parts of butanediol, 3 parts of aluminum oxide, 5 parts of softening oil, 18 parts of ascorbic acid, 11 parts of dibutyl hydroxy toluene and 4 parts of butyl hydroxy anisol in parts by weight;
the gram weight of the prepared swimsuit fabric is 95g/m2Elastic elongation gamma1136% of the total amount of the copolymer, and an elastic recovery rate γ2The content was 98%.
Example 3
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 8wt percent of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.63dL/g, and the content of silver ions is 120 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.14dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at the temperature of 100 ℃ for 23min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 276 ℃, the temperature of a spinning box body corresponding to the modified PET is 283 ℃, the temperature of a spinning box body corresponding to the PTT is 271 ℃, the cooling temperature is 21 ℃, the cooling air speed is 0.38m/s, the first roller speed is 1880m/min, the first roller temperature is 91 ℃, the second roller speed is 3570m/min, the second roller temperature is 173 ℃, and the winding speed is 3470 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.4:2.0, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 3:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.83cN/dtex, the elongation at break is 40 percent, and the total titer is 116 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp shrinkage of 52%, a crimp stability of 86%, a shrinkage elongation of 88%, and a crimp elastic recovery of 84%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 45mm, and the voltage is 50V; the frequency of the microwave treatment is 105MHZ, and the time is 13 min;
the anti-ultraviolet finishing agent consists of 15 parts of nano titanium dioxide, 1 part of phosphorous acid, 4 parts of polyethylene and 10 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 10 parts of butanediol, 3 parts of aluminum oxide, 5 parts of softening oil, 15 parts of ascorbic acid, 15 parts of dibutyl hydroxy toluene and 3 parts of butyl hydroxy anisol in parts by weight;
the gram weight of the prepared swimsuit fabric is 99g/m2Elastic elongation gamma1133%, elastic recovery rate γ2The content was 98%.
Example 4
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 12 wt% of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.62dL/g, and the content of silver ions is 150 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.21dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at the temperature of 111 ℃ for 22min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 277 ℃, the temperature of a spinning box body corresponding to the modified PET is 282 ℃, the temperature of a spinning box body corresponding to the PTT is 274 ℃, the cooling temperature is 23 ℃, the cooling air speed is 0.45m/s, the first roller speed is 1960m/min, the first roller temperature is 90 ℃, the second roller speed is 3700m/min, the second roller temperature is 170 ℃, and the winding speed is 3610 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.4:2.5, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.8:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.94cN/dtex, the elongation at break is 35%, and the total titer is 150 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp shrinkage of 52%, a crimp stability of 88%, a shrinkage elongation of 85%, and a crimp elastic recovery of 84%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 50mm, and the voltage is 75V; the frequency of the microwave treatment is 110MHZ, and the time is 15 min;
the anti-ultraviolet finishing agent consists of 15 parts of nano titanium dioxide, 2 parts of phosphorous acid, 3 parts of polyethylene and 10 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 8 parts of butanediol, 5 parts of aluminum oxide, 6 parts of softening oil, 15 parts of ascorbic acid, 16 parts of butylated hydroxytoluene and 14 parts of butylated hydroxyanisole in parts by weight;
the gram weight of the prepared swimsuit fabric is 100g/m2Elastic elongation gamma1134% of the total amount of the copolymer, elastic recovery rate γ2Is 100%.
Example 5
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 12 wt% of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.63dL/g, and the content of silver ions is 100 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.16dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at the temperature of 120 ℃ for 20min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 278 ℃, the temperature of a spinning box body corresponding to the modified PET is 283 ℃, the temperature of a spinning box body corresponding to the PTT is 272 ℃, the cooling temperature is 25 ℃, the cooling air speed is 0.5m/s, the first-roller speed is 2000m/min, the first-roller temperature is 92 ℃, the second-roller speed is 3570m/min, the two-roller temperature is 177 ℃, and the winding speed is 3470 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.1:2.2, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 3.3:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.7cN/dtex, the elongation at break is 45 percent, and the total titer is 100 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp shrinkage of 53%, a crimp stability of 86%, a shrinkage elongation of 86%, and a crimp elastic recovery of 85%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 15mm, and the voltage is 55V; the frequency of the microwave treatment is 80MHZ, and the time is 15 min;
the anti-ultraviolet finishing agent consists of 12 parts of nano titanium dioxide, 2 parts of phosphorous acid, 4 parts of polyethylene and 10 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 8 parts of butanediol, 4 parts of aluminum oxide, 6 parts of softening oil, 15 parts of ascorbic acid, 19 parts of dibutyl hydroxy toluene and 14 parts of butyl hydroxy anisol in parts by weight;
the gram weight of the prepared swimsuit fabric is 98g/m2Elastic elongation gamma1136% of the total amount of the copolymer, and an elastic recovery rate γ2The content was 99%.
Example 6
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 12 wt% of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.61dL/g, and the content of silver ions is 105 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (intrinsic viscosity of 1.1dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at 96 ℃ for 29min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 275 ℃, the temperature of a spinning box body corresponding to the modified PET is 281 ℃, the temperature of a spinning box body corresponding to the PTT is 270 ℃, the cooling temperature is 20 ℃, the cooling air speed is 0.3m/s, the first-roller speed is 1800m/min, the first-roller temperature is 88 ℃, the second-roller speed is 3530m/min, the two-roller temperature is 174 ℃, and the winding speed is 3430 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.1:2.0, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.8:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.9cN/dtex, the breaking elongation is 37 percent, and the total titer is 120 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp morphology with a crimp shrinkage of 53%, a crimp stability of 89%, a shrinkage elongation of 89%, and a crimp elastic recovery of 85%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 25mm, and the voltage is 30V; the frequency of the microwave treatment is 130MHZ, and the time is 15 min;
the ultraviolet-resistant finishing agent consists of 10 parts of nano titanium dioxide, 1 part of phosphorous acid, 5 parts of polyethylene and 8 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 10 parts of butanediol, 3 parts of aluminum oxide, 6 parts of softening oil, 15 parts of ascorbic acid, 20 parts of dibutyl hydroxy toluene and 6 parts of butyl hydroxy anisol in parts by weight;
the gram weight of the prepared swimsuit fabric is 90g/m2Elastic elongation gamma1137% of the total elastic recovery rate, gamma2The content was 98%.
Example 7
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 9wt percent of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.65dL/g, and the content of silver ions is 175 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.19dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at 106 ℃ for 23min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 277 ℃, the temperature of a spinning box body corresponding to the modified PET is 285 ℃, the temperature of a spinning box body corresponding to the PTT is 273 ℃, the cooling temperature is 23 ℃, the cooling air speed is 0.4m/s, the first roller speed is 1970m/min, the first roller temperature is 92 ℃, the two roller speed is 3550m/min, the two roller temperature is 173 ℃, and the winding speed is 3450 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.4:2.5, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 3.5:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.75cN/dtex, the elongation at break is 43 percent, and the total titer is 130 dtex; after relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp shrinkage of 54%, a crimp stability of 88%, a shrinkage elongation of 86%, and a crimp elastic recovery of 86%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 25mm, and the voltage is 100V; the frequency of the microwave treatment is 85MHZ, and the time is 11 min;
the anti-ultraviolet finishing agent consists of 13 parts of nano titanium dioxide, 2 parts of phosphorous acid, 2 parts of polyethylene and 4 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 10 parts of butanediol, 5 parts of aluminum oxide, 6 parts of softening oil, 17 parts of ascorbic acid, 22 parts of dibutyl hydroxy toluene and 15 parts of butyl hydroxy anisol in parts by weight;
the gram weight of the prepared swimsuit fabric is 96g/m2Elastic elongation gamma1137% of the total elastic recovery rate, gamma2Is 100%.
Example 8
A preparation method of swimsuit fabric comprises the following steps:
(1) preparing modified PET: in the preparation process, the addition amount of the PTMG is 10wt percent of the addition amount of the polyethylene terephthalate; a silver antibacterial agent (RHA-2F) is also added, the intrinsic viscosity of the prepared modified PET is 0.64dL/g, and the content of silver ions is 165 ppm;
(2) preparing FDY filaments from modified PET (prepared in the step (1)) and PTT (with the intrinsic viscosity of 1.13dL/g) in a mass ratio of 50:50 according to an FDY process and a circular parallel composite fiber process; carrying out relaxation heat treatment on the FDY yarns at the temperature of 90 ℃ for 30min to obtain elastic polyester fibers; the method specifically comprises the following steps:
the parameters of the FDY process are as follows: the spinning temperature is 275 ℃, the temperature of a spinning box body corresponding to the modified PET is 284 ℃, the temperature of a spinning box body corresponding to the PTT is 271 ℃, the cooling temperature is 20 ℃, the cooling air speed is 0.35m/s, the first roller speed is 1880m/min, the first roller temperature is 89 ℃, the second roller speed is 3560m/min, the second roller temperature is 174 ℃, and the winding speed is 3460 m/min;
the spinneret orifices on the spinneret plate are changed into a trilobal shape from a circle, the length ratio of three leaves of the same trilobal spinneret orifice is 1.0:1.3:2.5, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 3:1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
cooling by circular blowing and controlling the arrangement of trilobal spinneret orifices on a spinneret plate as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the prepared elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT; before relaxation heat treatment, the breaking strength of the elastic polyester fiber is 2.8cN/dtex, the elongation at break is 42%, and the total titer is 146 dtex; after relaxation heat treatment, the elastic polyester fiber had a three-dimensional crimp morphology with a crimp shrinkage of 54%, a crimp stability of 89%, a shrinkage elongation of 88%, and a crimp elastic recovery of 87%;
(3) the elastic polyester fiber prepared in the step (2) is subjected to the following process flow: the process of anti-oxidation finishing → spinning → weaving → anti-ultraviolet finishing; wherein, the process of antioxidant finishing is as follows: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the distance of electrostatic spraying is 30mm, and the voltage is 65V; the frequency of the microwave treatment is 150MHZ, and the time is 11 min;
the anti-ultraviolet finishing agent consists of 14 parts of nano titanium dioxide, 1 part of phosphorous acid, 4 parts of polyethylene and 10 parts of hindered phenol in parts by weight; the antioxidant finishing liquid consists of 9 parts of butanediol, 5 parts of aluminum oxide, 6 parts of softening oil, 19 parts of ascorbic acid, 30 parts of butylated hydroxytoluene and 13 parts of butylated hydroxyanisole in parts by weight;
the gram weight of the prepared swimsuit fabric is 98g/m2Elastic elongation gamma1137% of the total elastic recovery rate, gamma2The content was 99%.

Claims (10)

1. A preparation method of swimsuit fabric is characterized by comprising the following steps: the raw material is elastic polyester fiber, and the process flow is as follows: antioxidant finishing → spinning → weaving → uvioresistant finishing;
the preparation process of the elastic polyester fiber comprises the following steps:
in the process of preparing circular parallel composite fibers from modified PET and PTT according to the FDY process, the spinneret orifices on the spinneret plate are changed into trilobal from circular, circular air blowing is adopted for cooling, the arrangement of the trilobal spinneret orifices on the spinneret plate is controlled to meet certain conditions, FDY filaments are prepared, and the FDY filaments are subjected to relaxation heat treatment to obtain elastic polyester fibers;
the degree of crimp of each monofilament in the elastic polyester fiber is not completely the same;
the molecular chain of the modified PET consists of a polyethylene terephthalate chain segment and a PTMG chain segment; antibacterial agents are dispersed among molecular chains of the modified PET;
the length ratio of three leaves of the same trilobal spinneret orifice is 1.0: 1.1-1.4: 2.0-2.5, the width ratio of the corresponding three leaves is 1.5:1:1, the length ratio of the shortest leaf to the width ratio is 2.5-3.5: 1, and the included angle of the central lines of two adjacent leaves is 120 degrees; the three leaves of different trilobal spinneret orifices have the same shape and size;
the certain conditions are as follows: all the trilobal spinneret orifices are distributed in concentric circles, and the center line of the shortest leaf of each trilobal spinneret orifice passes through the circle center and points away from the circle center;
the contact surfaces of the modified PET and the PTT are parallel to each other when flowing in the guide holes of the trilobal spinneret orifices;
the process of antioxidant finishing comprises the following steps: attaching the antioxidant finishing liquid to the elastic polyester fiber in an electrostatic spraying manner and then performing microwave treatment; the electrostatic spraying distance is 15-50 mm, and the voltage is 30-100V; the frequency of the microwave treatment is 80-150 MHz, and the time is 10-15 min.
2. The preparation method of swimsuit fabric according to claim 1, wherein a mass ratio of the modified PET to the PTT is 50: 50.
3. The method for preparing the swimsuit fabric according to claim 1, wherein in the process of preparing the modified PET, the addition amount of the PTMG is 8-12 wt% of the addition amount of the polyethylene terephthalate; the antibacterial agent is a silver-based antibacterial agent, and the content of silver ions in the modified PET is 100-200 ppm.
4. The preparation method of the swimsuit fabric according to claim 3, wherein the intrinsic viscosity of the modified PET is 0.60-0.65 dL/g, and the temperature of a spinning manifold corresponding to the modified PET is 280-285 ℃; the intrinsic viscosity of the PTT is 1.10-1.21 dL/g; the temperature of the spinning beam corresponding to the PTT is 270-274 ℃.
5. The preparation method of swimsuit fabric according to claim 4, wherein parameters of the FDY process are as follows: the spinning temperature is 275-278 ℃, the cooling temperature is 20-25 ℃, the cooling air speed is 0.30-0.50 m/s, the one-roller speed is 1800-2000 m/min, the one-roller temperature is 85-95 ℃, the two-roller speed is 3500-3700 m/min, the two-roller temperature is 170-180 ℃, and the winding speed is 3430-3610 m/min.
6. The preparation method of the swimsuit fabric according to claim 1, wherein the temperature of the relaxation heat treatment is 90-120 ℃ for 20-30 min; the elastic polyester fiber consists of a plurality of modified PET/PTT parallel composite monofilaments with trilobal cross sections, an imaginary line intersecting the trilobal is made, the trilobal is divided into two parallel parts by the imaginary line, one part corresponds to the modified PET, and the other part corresponds to the PTT.
7. The method for preparing swimsuit fabric according to claim 6, wherein before relaxation heat treatment, the breaking strength of the elastic polyester fiber is more than or equal to 2.7cN/dtex, the elongation at break is 40.0 +/-5.0%, and the total titer is 100-150 dtex.
8. The method for preparing a swimsuit fabric according to claim 6, wherein after the relaxation heat treatment, the elastic polyester fiber has a three-dimensional crimp shape with a crimp contraction rate of 51-54%, a crimp stability of 86-90%, a shrinkage elongation of 82-89%, and a crimp elastic recovery of 83-87%.
9. The preparation method of the swimsuit fabric according to claim 1, wherein the anti-ultraviolet finishing agent comprises, by weight, 10-15 parts of nano titanium dioxide, 1-3 parts of phosphorous acid, 2-5 parts of polyethylene and 4-10 parts of hindered phenol; the antioxidant finishing liquid consists of 8-10 parts by weight of butanediol, 3-5 parts by weight of aluminum oxide, 5-6 parts by weight of softening oil, 15-20 parts by weight of ascorbic acid, 10-30 parts by weight of dibutyl hydroxy toluene and 0-15 parts by weight of butyl hydroxy anisol.
10. The preparation method of swimsuit fabric according to claim 1, wherein the gram weight of the swimsuit fabric is 90-100 g/m2Elastic elongation gamma1133 to 138% of an elastic recovery rate of gamma298-100%.
CN201911386290.7A 2019-12-29 2019-12-29 Preparation method of swimsuit fabric Active CN111058109B (en)

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