CN117166122A - Preparation method of fluffy quick-drying DTY type fiber fabric - Google Patents
Preparation method of fluffy quick-drying DTY type fiber fabric Download PDFInfo
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- CN117166122A CN117166122A CN202311106958.4A CN202311106958A CN117166122A CN 117166122 A CN117166122 A CN 117166122A CN 202311106958 A CN202311106958 A CN 202311106958A CN 117166122 A CN117166122 A CN 117166122A
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- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
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- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical class C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- 102000002151 Microfilament Proteins Human genes 0.000 description 1
- 108010040897 Microfilament Proteins Proteins 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
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- 239000003213 antiperspirant Substances 0.000 description 1
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- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
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Classifications
-
- 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
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The application relates to the technical field of textile, in particular to a preparation method of a fluffy quick-drying DTY type fiber fabric, which comprises the following steps: immersing POY fibers in sodium carbonate-sodium bicarbonate solution and performing ultrasonic treatment to fully swell the fibers, spin-drying, putting the fibers into acrylonitrile solution, and performing substitution treatment of CN groups on the POY fiber macromolecules; the treated POY fibers are subjected to first roller, hot box deformation, false twisting, second roller, grid nozzle, hot box shaping, third roller, oiling and winding shaping to obtain DTY; and weaving the DTY fibers to prepare the DTY fiber fabric. According to the application, the swelling treatment is carried out on the POY fibers by adopting the sodium carbonate-sodium bicarbonate solution, and then the substitution reaction is carried out on the swelled fiber macromolecules by combining the acrylic acid solution, so that the bulk and the looseness of the DTY fibers are improved, and the moisture absorption and quick drying effects of the fabric are improved.
Description
Technical Field
The application relates to the technical field of textile, in particular to a preparation method of a fluffy quick-drying DTY type fiber fabric.
Background
Polyester fiber is used as one of three main force fibers in synthetic fibers, and is widely applied to clothing fabrics and other non-clothing fields due to excellent physical and chemical properties. However, the polyester fiber has a limited application in fields requiring high hygroscopicity or water absorbability due to its hydrophobic property.
The low stretch polyester yarn (DTY) is one kind of textured yarn for polyester and chemical fiber, and is produced with polyester chip (PET) as material and through high speed spinning pre-oriented polyester yarn (POY), drafting and twisting. The hydrophobic DTY fiber is hydroscopic, and may be modified with hydrophilic component or through copolymerization or blending with hydrophilic component in polymerization and spinning stage or through different spinning plate to produce different filament. The existing DTY fiber with different interfaces has low section profile, unsatisfactory moisture absorption effect and unsatisfactory product quality.
Therefore, the improvement of the moisture absorption and quick drying effects of the DTY fibers has important significance for the fabric woven by the DTY fibers.
Disclosure of Invention
In order to improve the moisture absorption and quick drying performance of the DTY fiber, the application provides a preparation method of a fluffy quick drying DTY fiber fabric.
The application provides a preparation method of a fluffy quick-drying DTY type fiber fabric, which adopts the following technical scheme:
a preparation method of a fluffy quick-drying DTY type fiber fabric comprises the following steps:
s1, pre-crystallization treatment: immersing POY fibers in sodium carbonate-sodium bicarbonate solution and performing ultrasonic treatment to fully swell the fibers, spin-drying, putting the fibers into acrylonitrile solution, and performing substitution treatment of CN groups on the POY fiber macromolecules;
s2, performing first roller, hot box deformation, false twisting, second roller, grid nozzle, hot box shaping, third roller, oiling and winding on the POY fiber subjected to the pre-crystallization treatment to obtain DTY;
s3, knitting the DTY fibers to prepare the DTY fiber fabric.
Through the technical scheme, firstly, sodium carbonate-sodium bicarbonate solution is used for pre-swelling POY fibers, after the POY fibers absorb a swelling agent, the volume is increased, the intermolecular cohesive force is weakened, and meanwhile, the molecular hydrogen bonds among the microfibers are broken by heat generated in an ultrasonic process, so that microfibers which are combined together through weak intermolecular forces such as hydrogen bonds in the fibers are separated due to the breaking of bonds, the microfiber fibers forming the fibers are dissociated, the internal gaps of the fibers are increased, a micro-network structure is formed, and the fibers become fluffy; and then the swelling fiber macromolecules are subjected to substitution treatment by using an acrylonitrile solution, CN groups in the acrylonitrile react with POY fiber macromolecule hydrocarbon groups, the substituted CN groups enable partial cellulose macromolecules not to return to the original crystalline state, the crystal structure and the microstructure of the POY fiber are changed, the crystallinity and the orientation degree are reduced, the bulk and the looseness of DOY fiber are improved, the prepared fabric has better bulk and unit volume ratio, the diffusion speed of water in the fabric is increased, and the moisture absorption and quick drying effects of the fabric are improved.
In a specific embodiment, in the step S1, the POY fiber is soaked in sodium carbonate-sodium bicarbonate solution, and intermittent ultrasonic fiber splitting is performed under an ice bath condition, the ultrasonic power is 650W, the ultrasonic power is 5-6S and the ultrasonic power is 1-2S in one period, and the ultrasonic treatment is 60-90min.
By adopting the technical scheme, intermittent ultrasonic is selected, so that the device has the characteristics of small heating and high instantaneous power, the energy of ultrasonic can penetrate through fine gaps and small holes of fibers, swelling of the POY fibers by sodium carbonate-sodium bicarbonate solution is accelerated, the unit volume of the POY fibers is enlarged, and the fluffy effect is better.
In a specific embodiment, the sodium carbonate-sodium bicarbonate solution is prepared by mixing sodium carbonate solution and sodium bicarbonate solution with equal molar concentration and equal volume of 0.05-1 mol/L; the POY fiber to sodium carbonate-sodium bicarbonate solution bath ratio was 1: (50-100).
By adopting the technical scheme, when sodium bicarbonate is dissolved in water, granular colloid is formed and expands under certain pressure to form air holes, so that the fluffy effect is achieved; the pH value of the solution can be adjusted by matching sodium carbonate, and the alkaline solution system has better swelling effect on POY fibers.
In a specific embodiment, in S2, the temperature of the hot box deformation is 190-200 ℃, and the temperature of hot box shaping is 85-95 ℃.
By adopting the technical scheme, the temperature of the first hot box is optimized, so that the plasticity of the DTY fiber can be improved, the DTY fiber has higher crimping performance and elasticity, and has higher mechanical property; if the temperature of the first heat box is too high, the softening temperature of the DTY fiber is close to or even exceeds, so that the orientation degree of the DTY fiber is increased, the crimping performance of the DTY fiber is reduced, the brittleness of the DTY fiber is increased, and the mechanical property of the DTY fiber is reduced;
the temperature of the shaping hot box is optimized, so that the DTY fiber which is twisted by the false twister and deformed is subjected to complementary heat shaping, and the internal stress is reduced, thereby improving the stability of the DTY fiber; if the temperature of the shaping hot box is lower, the shaping function cannot be supplemented, so that the stability of the DTY fiber is reduced, and if the temperature of the shaping hot box is higher, the deformation cannot be kept, so that the crimping performance and the mechanical property of the DTY fiber are reduced.
In a specific embodiment, in S3, the sizing overfeed rate is 5.4-5.6% and the winding overfeed rate is 3.6-3.8%.
By adopting the technical scheme, the roller is a cylindrical rotary part, the shape of the roller is similar to that of the roller, the shaping overfeed rate is the percentage of the speed difference between the second roller and the third roller relative to that of the second roller, the shaping overfeed rate is optimized, the DTY fiber is relaxed in the shaping hot box, the internal stress among molecules is effectively reduced, and the mechanical property and stability of the DTY fiber are improved.
The winding overfeed rate is the percentage of the speed difference between the second roller and the winding relative to the surface speed of the second roller, and the winding overfeed rate is optimized, so that the unwinding effect of the DTY fiber can be improved, the possibility of breakage of the DTY fiber is reduced, and the mechanical property of the DTY fiber is improved; if the winding overfeed rate is lower, the DTY fibers are mutually adhered and clamped to be broken, and if the winding overfeed rate is higher, the DTY fibers can obtain higher tension during winding to be broken.
In a specific embodiment, in S2, the oiling agent used for oiling includes the following raw materials in parts by weight: 45-60 parts of white oil, 10-15 parts of epoxy phosphate and 30-40 parts of water; the oil-up rate is 0.35-0.38wt%.
By adopting the technical scheme, after oiling, the epoxy phosphate and the white oil can be attached to the surface of the POY fiber, so that the friction coefficient of the POY fiber is reduced, and the bundling property and smoothness of the POY fiber are improved.
In a specific embodiment, in the step S3, the DTY fiber fabric is specifically formed by knitting DTY fibers: knitting DTY fibers into a piece of gray fabric by weft knitting, and carrying out dyeing process and finishing process on the piece of gray fabric to obtain a DTY fiber fabric; the dyeing process comprises the steps of sequentially carrying out degreasing, dyeing, reduction cleaning, dehydration, scutching and drying on the obtained embryonic cloth; the post-finishing process is to roll the dyed embryo cloth in a sizing liquid padding and drying sizing treatment in sequence.
By adopting the technical scheme, the DTY fiber with good bulk and looseness is adopted for weaving the fabric, so that the prepared fabric has better bulk and increased unit volume ratio, the diffusion speed of water in the fabric is increased, and the quick-drying effect of the fabric is improved.
The grey cloth is subjected to a dyeing process and a post-finishing process, so that the dimensional stability of the fabric is improved, and meanwhile, the friction force between yarns in the grey cloth can be increased by the post-finishing process, so that the yarns are prevented from slipping or being easily hooked by external force, the dimensional stability of the fabric is further improved, the hydrophilic auxiliary agent aqueous solution is uniformly and stably padded in the dyed grey cloth, and the hydrophilicity and the moisture permeability of the fabric are improved.
In a specific embodiment, the styling liquid is a hygroscopic antiperspirant PSR containing 7-8g/L of a hydrophilic silicone oil T718 and 3-4 g/L.
By adopting the technical scheme, the hydrophilic silicone oil softener and the moisture absorption and sweat releasing auxiliary agent are added in the shaping process, so that the fabric can be endowed with soft hand feeling, and the moisture absorption and quick drying performances of the fabric are further improved.
In a specific embodiment, the drying and shaping in the finishing process comprises a first shaping and a second shaping, wherein the temperature of the first shaping is 160-190 ℃ and the time is 90-130s; the second shaping temperature is 160-190 ℃, the time is 90-130s, and the interval between the first shaping and the second shaping is 0-10s.
In a specific embodiment, the first sizing temperature is 170-180 ℃ and the second sizing temperature is 170-180 ℃.
Through adopting above-mentioned technical scheme, after padding the treatment of sizing liquid with the embryo cloth after dyeing, twice is finalized again for yarn distribution in the surface fabric is even, reduces the slip of yarn in the surface fabric, and the cloth cover of whole surface fabric is fluffy state moreover, and yarn crooked, fluffy evenly distributed reaches the function of storing the air in the cloth cover, is favorable to hydrophilic auxiliary agent aqueous solution stable, even padding in the yarn, makes the surface fabric of making feel soft, improves hydrophilicity, moisture permeability and dimensional stability of surface fabric made.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the application, the swelling treatment is carried out on the POY fibers by adopting the sodium carbonate-sodium bicarbonate solution, and then the substitution reaction is carried out on the swelled fiber macromolecules by combining with the acrylic acid solution, so that the bulk and the looseness of the DTY fibers are improved, the prepared fabric has better bulk and increased unit volume ratio, the diffusion speed of water in the fabric is increased, and the moisture absorption and quick drying effects of the fabric are improved;
2. in the application, the overfeeding rate of shaping and winding of the POY fiber is optimized, so that the mechanical property and stability of the DTY fiber are improved;
3. in the application, the hydrophilic silicone oil softener and the hygroscopic and sweat-releasing auxiliary agent are added in the shaping process, so that the fabric can be endowed with soft hand feeling, and simultaneously has the effects of hygroscopic and sweat-releasing.
Detailed Description
The following examples illustrate the application in further detail.
Examples
Example 1
The embodiment discloses a preparation method of a fluffy quick-drying DTY type fiber fabric, which comprises the following specific processes:
s0, placing 100g of polyester chips into a screw extruder, melt blending and extruding, and then placing into a spinning machine for a spinning process to obtain POY fibers;
s1, pre-crystallization treatment:
s11, weighing 0.53g of sodium carbonate and 0.42g of sodium bicarbonate, putting into a 1L beaker, adding a small amount of water for dissolution, supplementing water to a volume of 1L after the temperature is reduced to normal temperature, and obtaining sodium carbonate-sodium bicarbonate solution;
s12, soaking 1g of POY fibers in deionized water at 40 ℃ for 10min, taking out, squeezing, putting into a 250ml beaker, measuring 100ml of sodium carbonate-sodium bicarbonate solution, and adding into the POY fibers to obtain a mixture;
s13, 250ml of ice cubes are filled in a 500ml beaker, the beaker filled with the mixture is fixed in the beaker filled with the ice cubes, and the beaker is slowly transferred to an object table of an ultrasonic instrument for ultrasonic treatment, wherein the power of ultrasonic waves is 650W, the ultrasonic mode is set to ultrasonic waves for 5S, the interval is 1S, and the ultrasonic treatment is carried out for 60min;
s14, spin-drying the POY fibers subjected to ultrasonic treatment, soaking the POY fibers in an acrylonitrile solution at 30 ℃ for 20min, washing with water, pickling (20 wt% nitric acid solution), washing with water, and drying;
s2, performing hot box deformation, false twisting by a twister, shaping by a second roller, a network nozzle, hot box shaping by a third roller at 85 ℃ and oiling and winding on the POY fiber subjected to the pre-crystallization treatment to obtain a DTY fiber, wherein the draft ratio is 1.78, the stretching speed is 1.62, the shaping overfeed rate is 5.4%, the oiling rate is 0.35wt%, the winding overfeed rate is 3.6% and the winding tension is 22Cn; the oiling agent is prepared by mixing 45Kg of white oil, 15Kg of epoxy phosphate and 40Kg of water;
s3, weft knitting the DTY fiber weft yarns into a piece of gray cloth;
s31, dyeing process treatment:
s311, degreasing: adding 100L of water into a dyeing machine, adding 100g of degreasing agent TISSOCY RC9 into the dyeing machine, and uniformly stirring and mixing to obtain a degreasing agent aqueous solution; placing the embryo cloth into a dyeing machine at 80 ℃, soaking for 20min, and discharging an oil removing agent vinegar solution to obtain the oil removed embryo cloth;
s312, dyeing: adding 100L of water into a dyeing machine, heating the water temperature to 25 ℃, adding 0.4Kg of fluorescent whitening agent DT benzoxazole derivative and 1.2KgDS-191H dispersant into the dyeing machine, stirring and mixing uniformly to obtain a dye liquor, dyeing the deoiled embryo cloth, wherein the operation speed of the embryo cloth is 200m/min in the dyeing process, and the temperature and time are controlled as follows: heating from 25 ℃ to 50 ℃ at a heating rate of 2 ℃/min, and preserving heat for 10min; then heating from 50 ℃ to 70 ℃ at a heating rate of 1.5 ℃/min; then heating from 70 ℃ to 130 ℃ at a heating rate of 0.5 ℃/min, and preserving heat for 30min; then cooling from 130 ℃ to 100 ℃ at a cooling rate of 1 ℃/min; finally, cooling to 80 ℃ from 100 ℃ at a cooling rate of 2 ℃/min, and discharging the dye liquor to obtain dyed embryo cloth;
s313, reduction cleaning: adding 100L of water into a dyeing machine, heating the water to 70 ℃, adding 0.6Kg of sodium hydrosulfite and 0.3Kg of reduction cleaning agent HT-167BS into the water, stirring and mixing uniformly to obtain reduction cleaning aqueous solution, regulating the pH of the reduction cleaning aqueous solution to be 4-4.5 by using a pH regulator NE, carrying out reduction cleaning on dyed embryo cloth for 20min by using the reduction cleaning aqueous solution, and discharging the reduction cleaning aqueous solution to obtain the reduction cleaned embryo cloth;
s314, dehydration: dehydrating the reduced and cleaned embryo cloth for 5min at the rotating speed of the dehydrator of 600r/min to obtain dehydrated embryo cloth;
s315, open width: transferring the dehydrated embryonic cloth into a scutcher for scutching treatment, wherein the speed of the scutcher is 50m/min, and obtaining the embryonic cloth with the width of 155 cm;
s316, drying: the scutched raw cloth is conveyed into a dryer for drying, wherein the temperature of the dryer is 130 ℃, and the speed of conveying the raw cloth is 12m/min;
s32, post-finishing process treatment:
s321, padding the sizing liquid: adding 10L of sizing liquid into a binding groove of a sizing machine, wherein the sizing liquid is formed by mixing 70g of hydrophilic silicone oil, 40g of moisture absorption and perspiration agent PSR and 10L, regulating the pH value of a hydrophilic auxiliary agent aqueous solution in the binding groove to be 4.5-5.5 by using a pH regulator NE, and padding the dried embryo cloth in the binding groove of the sizing machine to obtain embryo cloth with the liquid carrying rate of 70%, wherein the speed of the sizing machine is 15m/min, and the pressure of a roller is 4Mpa;
s322, drying and shaping: transferring the padding-treated embryo cloth into a baking oven, performing primary shaping treatment at 190 ℃ for 90 seconds, wherein the speed of the padding-treated embryo cloth is 12m/min, and overfeeding by 10%; after staying for 10s, carrying out secondary shaping treatment at 190 ℃ for 130s, wherein the speed is 12m/min, and overfeeding by 10% to obtain the fabric.
Example 2
The present example is substantially the same as example 1 except that S11, 106g of sodium carbonate and 84g of sodium bicarbonate are weighed and put into a 1L beaker, a small amount of water is added for dissolution, and after the temperature is reduced to normal temperature, water is added for constant volume to 1L, so as to obtain sodium carbonate-sodium bicarbonate solution; s12, soaking 1g of POY fibers in deionized water at 40 ℃ for 10min, taking out, squeezing, putting into a 250ml beaker, measuring 50ml of sodium carbonate-sodium bicarbonate solution, and adding into the POY fibers to obtain a mixture.
Example 3
This example is substantially the same as example 1 except that in S13, 250ml of ice cubes are filled in a 500ml beaker, and the beaker with the mixture is fixed in the beaker with ice cubes and slowly transferred to an object table of an ultrasonic apparatus for ultrasonic treatment, wherein the power of ultrasonic waves is 650W, the ultrasonic mode is set to ultrasonic waves for 6S, intermittent times for 2S, and ultrasonic treatment is performed for 90min.
Example 4
The embodiment is basically the same as the embodiment 1, except that S2, the pre-crystallized POY fiber is subjected to first roller, hot box deformation at 190 ℃, false twister twisting, second roller, network nozzle, hot box shaping at 85 ℃, third roller, oiling and winding to obtain DTY fiber, wherein the draft ratio is 1.78, the stretching speed is 1.62, the shaping overfeed rate is 5.4%, the oiling rate is 0.38wt%, the winding overfeed rate is 3.6%, and the winding tension is 22Cn; the oil is prepared by mixing 60Kg of white oil, 10Kg of epoxy phosphate and 30Kg of water.
Example 5
The embodiment is basically the same as the embodiment 1, except that S2, the pre-crystallized POY fiber is subjected to first roller, hot box deformation at 200 ℃, false twister twisting, second roller, network nozzle, hot box shaping at 95 ℃, third roller, oiling and winding to obtain DTY fiber, wherein the draft ratio is 1.78, the stretching speed is 1.62, the shaping overfeed rate is 5.4%, the oiling rate is 0.35wt%, the winding overfeed rate is 3.6%, and the winding tension is 22Cn; the oil is prepared by mixing 45Kg of white oil, 15Kg of epoxy phosphate and 40Kg of water.
Example 6
The embodiment is basically the same as the embodiment 1, except that S2, the pre-crystallized POY fiber is subjected to first roller, hot box deformation at 190 ℃, false twister twisting, second roller, network nozzle, hot box shaping at 85 ℃, third roller, oiling and winding to obtain DTY fiber, wherein the draft ratio is 1.78, the stretching speed is 1.62, the shaping overfeed rate is 5.6%, the oiling rate is 0.35wt%, the winding overfeed rate is 3.8%, and the winding tension is 22Cn; the oil is prepared by mixing 45Kg of white oil, 15Kg of epoxy phosphate and 40Kg of water.
Example 7
This example is basically the same as example 1, except that S321, the sizing liquid padding: adding 10L of sizing liquid into a binding groove of a sizing machine, wherein the sizing liquid is formed by mixing 80g of hydrophilic silicone oil, 30g of moisture absorption and perspiration agent PSR and 10L, regulating the pH value of a hydrophilic auxiliary agent aqueous solution in the binding groove to be 4.5-5.5 by using a pH regulator NE, and padding the dried embryo cloth in the binding groove of the sizing machine to obtain the embryo cloth with the liquid carrying rate of 70 percent, wherein the speed of the sizing machine is 15m/min, and the pressure of a roller is 4Mpa.
Example 8
The present embodiment is basically the same as embodiment 1, except for S322, drying and shaping: transferring the padding-treated embryo cloth into a baking oven, performing primary shaping treatment at 160 ℃ for 130s, wherein the speed of the padding-treated embryo cloth is 12m/min, and overfeeding by 10%; and performing secondary shaping treatment at 190 ℃ for 90 seconds, wherein the speed is 12m/min, and overfeeding by 10% to obtain the fabric.
Example 9
The present embodiment is basically the same as embodiment 1, except for S322, drying and shaping: transferring the padding-treated embryo cloth into a baking oven, performing primary shaping treatment at 170 ℃ for 120 seconds, wherein the speed of the padding-treated embryo cloth is 12m/min, and overfeeding by 10%; after staying for 4s, carrying out secondary shaping treatment at 180 ℃ for 100s, wherein the speed is 12m/min, and overfeeding by 10% to obtain the fabric.
Example 10
The present embodiment is basically the same as embodiment 1, except for S322, drying and shaping: transferring the padding-treated embryo cloth into a baking oven, performing primary shaping treatment at 180 ℃ for 100 seconds, wherein the speed of the padding-treated embryo cloth is 12m/min, and overfeeding by 10%; after the fabric stays for 6s, the second shaping treatment is carried out at 170 ℃ for 120s, the speed of the fabric is 12m/min, and the fabric is obtained by overfeeding for 10 percent.
Comparative example
Comparative example 1
This comparative example differs from example 1 in that S1 is omitted.
Comparative example 2
The comparative example differs from example 1 in that S1, S11, 0.53g of sodium carbonate and 0.42g of sodium bicarbonate are weighed and put into a 1L beaker, a small amount of water is added for dissolution, and after the temperature is reduced to normal temperature, water is added for constant volume to 1L, so as to obtain sodium carbonate-sodium bicarbonate solution;
s12, soaking 1g of POY fibers in deionized water at 40 ℃ for 10min, taking out, squeezing, putting into a 250ml beaker, measuring 100ml of sodium carbonate-sodium bicarbonate solution, and adding into the POY fibers to obtain a mixture;
s13, 250ml of ice cubes are filled in a 500ml beaker, the beaker filled with the mixture is fixed in the beaker filled with the ice cubes, and the beaker is slowly transferred to an object table of an ultrasonic instrument for ultrasonic treatment, and then the beaker is dried, wherein the ultrasonic power is 650W, the ultrasonic mode is set to ultrasonic for 5 seconds, intermittent for 1 second, and ultrasonic treatment is carried out for 60 minutes.
Comparative example 3
The comparative example differs from example 1 in that S1, POY fibers were immersed in an acrylonitrile solution at 30℃for 20 minutes, then washed with water, acid washed (20 wt% nitric acid solution), water washed, and dried.
Performance detection
1. Moisture absorption quick drying property
The specific test process is as follows: evaluation of moisture absorption and quick drying Properties of textiles according to Standard GB/T21655.1-2008, section 1: the fabrics prepared in examples 1-10 and comparative examples 1-3 were tested for water absorption according to the knitted type hygroscopic product of the single item combination test method, washing procedure 4N, washing 5 times, oven drying, and the results are recorded in table 1, and the fabric specifications are: before washing, the content of the active components is more than or equal to 200 percent, and after washing, the content of the active components is more than or equal to 200 percent; the fabrics prepared according to examples 1-10 and comparative examples 1-3 were tested for drip diffusion time according to section 8.2, the results are recorded in table 1, the fabric specifications are: before washing, the time is less than or equal to 3s, and after washing, the time is less than or equal to 3s.
2. Dimensional stability
The fabrics prepared in examples 1 to 10 and comparative examples 1 to 3 were washed 5 times, each for 0.5h, and the interval between each washing was 1h, and the percentages of the warp and weft directions to the unwashed fabrics were measured, and the results are recorded in table 1.
TABLE 1 Performance test data sheets for examples 1-10 and comparative examples 1-3
Referring to table 1, it can be seen that by pre-treating POY fibers in accordance with examples 1 to 3 and comparative examples 1 to 3, when pre-treating the POY fibers, the POY fibers are pre-swelled with sodium carbonate-sodium bicarbonate solution, the POY fibers become larger in volume after absorbing the swelling agent, and the cohesive force between molecules is weakened, and at the same time, the heat generated during the ultrasonic process is used to break molecular hydrogen bonds between the microfibers, so that the microfibers bonded together by weak intermolecular forces such as hydrogen bonds in the fibers are separated due to the breaking of bonds, and the microfilament fibers constituting the fibers are dissociated, and the voids inside the fibers are increased to form a micro-network structure and become fluffy; then, the swollen fiber macromolecules are subjected to substitution treatment by using an acrylonitrile solution, CN groups in the acrylonitrile react with POY fiber macromolecular hydrocarbon groups, and the substituted CN groups enable part of cellulose macromolecules not to return to the original crystalline state, so that the crystal structure and microstructure of the POY fiber are changed, the crystallinity and the orientation degree are reduced, and the bulk and the looseness of the DTY fiber are improved; the ultrasonic treatment of the sodium carbonate-sodium bicarbonate solution and the acrylonitrile solution have good synergistic effect, so that the prepared fabric has better bulk and increased unit volume ratio, the diffusion speed of water in the fabric is increased, and the moisture absorption and quick drying effects of the fabric are improved.
Referring to table 1, in combination with examples 1 and 8-10, it can be seen that after padding the dyed embryonic cloth with the sizing liquid, the dyed embryonic cloth is shaped twice, so that the yarns in the fabric are uniformly distributed, the slippage of the yarns in the fabric is reduced, the whole fabric surface is in a fluffy state, the yarns are bent and uniformly distributed in the fabric surface, the function of storing air is achieved, the stable and uniform padding of the hydrophilic auxiliary aqueous solution in the yarns is facilitated, particularly, the first shaping temperature is 170-180 ℃, the second shaping temperature is 170-180 ℃, the manufactured fabric has soft hand feeling, and the hydrophilicity, the moisture permeability and the dimensional stability of the fabric are better.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (10)
1. A preparation method of a fluffy quick-drying DTY type fiber fabric is characterized by comprising the following steps of: the method comprises the following steps:
s1, pre-crystallization treatment: immersing POY fibers in sodium carbonate-sodium bicarbonate solution and performing ultrasonic treatment to fully swell the fibers, spin-drying, putting the fibers into acrylonitrile solution, and performing substitution treatment of CN groups on the POY fiber macromolecules;
s2, performing first roller, hot box deformation, false twisting, second roller, grid nozzle, hot box shaping, third roller, oiling and winding on the POY fiber subjected to the pre-crystallization treatment to obtain DTY;
s3, knitting the DTY fibers to prepare the DTY fiber fabric.
2. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 1, which is characterized by comprising the following steps: in the step S1, the POY fibers are soaked in sodium carbonate-sodium bicarbonate solution, intermittent ultrasonic fiber splitting is carried out under the ice bath condition, the ultrasonic power is 650W, the ultrasonic power is 5-6S and the ultrasonic power is 1-2S, and the ultrasonic treatment is carried out for 60-90min.
3. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 2, which is characterized in that: the sodium carbonate-sodium bicarbonate solution is prepared by mixing sodium carbonate solution and sodium bicarbonate solution with the same molar concentration and 0.05-1mol/L in equal volume; the POY fiber to sodium carbonate-sodium bicarbonate solution bath ratio was 1: (50-100).
4. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 1, which is characterized by comprising the following steps: in the step S2, the deformation temperature of the hot box is 190-200 ℃, and the shaping temperature of the hot box is 85-95 ℃.
5. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 1, which is characterized by comprising the following steps: in the step S2, the shaping overfeed rate is 5.4-5.6%, and the winding overfeed rate is 3.6-3.8%.
6. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 1, which is characterized by comprising the following steps: in the step S2, the oiling agent comprises the following raw materials in parts by weight: 45-60 parts of white oil, 10-15 parts of epoxy phosphate and 30-40 parts of water; the oil-up rate is 0.35-0.38wt%.
7. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 1, which is characterized by comprising the following steps: in the step S3, the DTY fiber fabric is specifically prepared by knitting DTY fibers: knitting DTY fibers into a piece of gray fabric by weft knitting, and carrying out dyeing process and finishing process on the piece of gray fabric to obtain a DTY fiber fabric; the dyeing process comprises the steps of sequentially carrying out degreasing, dyeing, reduction cleaning, dehydration, scutching and drying on the obtained embryonic cloth; the post-finishing process is to roll the dyed embryo cloth in a sizing liquid padding and drying sizing treatment in sequence.
8. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 7, which is characterized in that: the styling liquid is a moisture absorption and perspiration agent PSR containing 7-8g/L of hydrophilic silicone oil T718 and 3-4 g/L.
9. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 7, which is characterized in that: the drying and shaping in the after-finishing process comprises a first shaping and a second shaping, wherein the temperature of the first shaping is 160-190 ℃ and the time is 90-130s; the second shaping temperature is 160-190 ℃, the time is 90-130s, and the interval between the first shaping and the second shaping is 0-10s.
10. The method for preparing the fluffy quick-drying DTY fiber fabric according to claim 9, which is characterized in that: the first shaping temperature is 170-180 ℃, and the second shaping temperature is 170-180 ℃.
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