CN114108123A - Moisture-absorbing and sweat-releasing polyester staple fiber and preparation method thereof - Google Patents
Moisture-absorbing and sweat-releasing polyester staple fiber and preparation method thereof Download PDFInfo
- Publication number
- CN114108123A CN114108123A CN202010877689.1A CN202010877689A CN114108123A CN 114108123 A CN114108123 A CN 114108123A CN 202010877689 A CN202010877689 A CN 202010877689A CN 114108123 A CN114108123 A CN 114108123A
- Authority
- CN
- China
- Prior art keywords
- staple fiber
- sweat
- absorbing
- polyester staple
- polyester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/82—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from polyester amides or polyether amides
-
- 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
Abstract
The invention discloses a moisture-absorbing and sweat-releasing polyester staple fiber and a preparation method thereof, wherein the polyester staple fiber comprises the following raw material components: the breaking strength of the polyester staple fiber is 2.0-3.5cN/dt, and the breaking elongation of the moisture-absorbing and sweat-releasing polyester staple fiber is lower than 20%. The preparation method of the invention adopts high-temperature melting and ultralow-temperature spinning technologies, reasonably utilizes the influence of the polyester melt fracture principle on the fiber performance, and carries out high-temperature melting at the feeding section, the preheating section and the melting section of the screw, wherein the melting temperature is 30-40 ℃ higher than the melting point of the hydrophilic modified polyester chip, and the temperature is reduced to 5-30 ℃ higher than the melting point of the chip at the mixing and metering section of the screw. The breaking strength of the moisture-absorbing and sweat-releasing polyester staple fiber is 2.0-3.5cN/dt, and the breaking elongation of the fiber is lower than 20%. The anti-pilling performance of the fabric prepared by the method is 1-1.5 grade higher than that of the conventional moisture-absorbing and sweat-releasing polyester staple fiber.
Description
Technical Field
The invention relates to polyester staple fibers and a preparation method thereof, in particular to moisture-absorbing and sweat-releasing polyester staple fibers and a preparation method thereof.
Background
The pilling phenomenon of clothes often occurs in wool, terylene/cotton blended fabrics and terylene/viscose blended fabrics, and particularly the pilling phenomenon of terylene pure spinning or terylene/cotton, terylene/viscose blended fabrics is serious in the using process, so that the aesthetic feeling and the service performance of the appearance are influenced. Researches have found that whether the fabric is easy to be pilling or not is closely related to the fiber properties, for example, the cotton and wool fabric is not easy to be fluffed and pilling because the breaking strength and the breaking elongation of the cotton and wool fibers are low, and the breaking strength is lower and is usually 1.5-3.0 cN/dt; the elongation at break is lower, is between 4.0 and 20 percent and is more than 10 percent; and the surface is provided with grooves. The reasons for easy fluffing and pilling of the polyester-containing fabric are that the polyester fiber has smooth surface and small cohesive force among fibers, and the fiber has high strength and large elongation capacity, particularly good fatigue resistance (including bending fatigue resistance and twisting fatigue resistance) and wear resistance, for example, the industrial indexes of the conventional cotton type polyester staple fiber such as high quality and the like are that the breaking strength is higher than 5.2cN/dt, the elongation is 20-35%, the polyester staple fiber is easy to expose on the surface of the fabric to present fuzz when being slightly rubbed in the process of wearing, which is called as 'fuzz', the fluff is entangled with each other during the continuous use to form small spherical fiber particles called 'pilling', because the polyester fiber has large elongation and the stress degree under the same stretching condition is less than that of natural cotton and wool fiber, meanwhile, the spherical fiber particles are high in strength and good in flexibility, and are not easy to break under the friction of external force, so that the spherical fiber particles cannot break and fall off in time, and more.
The method solves the problem that the polyester staple fibers are easy to fluff and pilling, and the method generally adopted in the industry is to reduce the strength of the polyester fibers. The simplest method for reducing the strength of the polyester fiber is to use low-viscosity chips, such as the intrinsic viscosity of the anti-pilling polyester chips proposed by the Japanese patent to be controlled to be about 0.365dl/g, and the intrinsic viscosity of the polyester chips proposed by more patents and researches to be lower than 0.55 dl/g. The polyester chip has too low intrinsic viscosity, which easily causes the low pressure of components in production, serious reflux of melt in a screw rod and increased spinning abnormal phenomena such as pulp lumps, column head yarns and the like, thereby influencing the stability of spinning operation and fiber quality. Secondly, three monomers, four monomers and even five monomers are added in the polymerization process for chemical modification to destroy the regularity of the polyester macromolecular chain aggregation state and reduce the crystallization and orientation capability of the fiber, so that the breaking strength of the obtained modified polyester fiber is obviously reduced. The third method is to reduce the viscosity of the chips while modifying the polymer.
For example, the breaking strength of the anti-pilling polyester staple fiber of east-Li Japan company is 2.4cN/dt, and the fiber elongation is 35%.
According to the anti-pilling fiber developed in the development and application of the anti-pilling polyester, such as Lovibond and the like, the intrinsic viscosity of the adopted polyester chip is lower than 0.53dl/g, and the tri-monomer is added for chemical modification, so that the strength of the obtained fiber is 2.2-2.6 cN/dt, and the elongation of the fiber is controlled at 25-35%.
CN108085778A 'an anti-pilling easily-dyed super-imitation cotton modified short fiber and a preparation method thereof', relates to a cotton modified short fiber, and in particular relates to an anti-pilling easily-dyed super-imitation cotton modified short fiber and a preparation method thereof. Blending and spinning two functional slices A and B with intrinsic viscosities of 0.62dL/g, wherein the functional slice A is provided with a dye base dyed by cationic dye; the functional chip B is obtained by blending, melting, extruding and granulating polybutylene terephthalate and polyester chips. The intrinsic viscosity of the blend chips was reduced to 0.58 dL/g.
CN101831727B 'A cotton-like polyester staple fiber and a preparation method thereof' provides a cotton-like polyester staple fiber, in which the content of calcium sulfate is 0-1 wt%, the content of PEG is 1-10 wt%, the content of ECDP is 1-10 wt%, and then alkali treatment is carried out, part of calcium sulfate is dissolved out in the soaking process, so that micropores are formed on the surface of the fiber, and finally the cotton-like polyester staple fiber is obtained.
CN103952790A "a pilling resistant polyesteramide staple fiber" provides a pilling resistant polyesteramide staple fiber, which is prepared by using modified polyesteramide as raw material and through melt conveying, then sequentially drafting, curling and cutting into staple fibers with specific length, wherein: the modified polyesteramide is obtained by carrying out esterification reaction on 100 parts of terephthalic acid and 40-80 parts of ethylene glycol to obtain polyethylene glycol phthalate, and then continuously carrying out polycondensation reaction on the polyethylene glycol terephthalate and 5-30 parts of aliphatic polyamide in the presence of an additive A, B, C, so that short fibers with the strength of 1.80-2.80cN/dtex are developed, and the fabric with the anti-pilling function can be prepared by the modified polyesteramide with the breaking elongation of 20-40%.
In summary, the existing production methods of the anti-pilling polyester staple fibers generally have three categories, namely, the fiber strength is reduced by simply reducing the intrinsic viscosity of the polyester; secondly, the fiber strength is reduced by adding a third monomer, a fourth monomer or a fifth monomer to carry out chemical modification on the polyester to destroy the regularity of a macromolecular chain; and thirdly, viscosity reduction and chemical modification are carried out simultaneously. The three methods have advantages and disadvantages, the strength of the obtained fiber can be controlled to be lower, is close to or slightly higher than that of cotton fiber, is 2.0-4.5cN/dt, but the elongation at break is kept higher, and is 20-40%. When the fiber is spun purely or blended with cotton and wool fibers, as the elongation of the polyester fiber is far higher than that of the natural cotton and wool fibers, and the fiber stress is lower than that of the natural cotton and wool fibers, fuzz and fiber balls on the fabric are difficult to break, the fuzzing and pilling phenomena are still serious, and the essential change is difficult to realize.
The polyester fiber is prepared by melt spinning, water bath steam drafting, setting, curling and cutting. The breaking strength and the breaking elongation of the polyester staple fiber are mainly controlled by the stretching ratio in the post-spinning hot stretching, the higher the stretching ratio is, the larger the orientation and the crystallization capacity of the fiber are, the higher the breaking strength of the fiber is, the lower the breaking elongation is, namely, the breaking strength and the breaking elongation show negative correlation. Existing research and production experience have shown that: the breaking strength of the fiber is reduced by simply reducing the intrinsic viscosity of the polyester by a physical modification method, the intrinsic viscosity of the polyester is low, the flow apparent viscosity is low, the polymer chain of the polyester is short, the intermolecular force is small, the slippage and the deformation capacity of the polymer chain are increased, so that the breaking strength of the fiber is reduced, and the breaking elongation is difficult to reduce or even increases; in the chemical modification method, three monomers, four monomers and even five monomers added in the polymerization are flexible chains, the regularity of the aggregation state of the macromolecular chains of the polyester is damaged, the crystallization and orientation capability of the fibers are reduced, the crystal lattice and the orientation with the consolidation function are reduced, the breaking strength of the fibers is reduced, but the breaking elongation is not reduced or even increased; it can be seen that the strength of the anti-pilling polyester staple fibers described in the existing products and research documents on the market can be lower but the elongation is larger, and is usually between 20 and 40 percent. Compared with the conventional polyester staple fibers, the anti-pilling performance of the pure-spun or polyester-cotton blended fabric made of the polyester staple fibers with lower breaking strength and higher elongation is improved, but the effect is not obvious.
The existing polyester fiber products have two problems, namely, when the breaking strength of the polyester fiber is as low as that of natural cotton fiber and natural wool fiber, the breaking elongation of the polyester fiber is inevitably far higher than that of the natural cotton fiber and the natural wool fiber, or when the breaking elongation of the polyester fiber is as low as that of the natural cotton fiber and the natural wool fiber or is slightly higher than that of the natural cotton fiber and the natural wool fiber, the breaking strength of the polyester fiber is inevitably far higher than that of the natural cotton fiber and the natural wool fiber, and the two problems of the existing polyester fiber products cause that the produced wool balls are not easy to fall off because the strength of the polyester fiber is higher than that of the natural fiber when the polyester fiber is blended with the natural fiber, and the anti-pilling performance of the fabric is lower; or because the breaking elongation is higher than the stress degree of the natural fiber and lower than the natural fiber, the produced hair bulb is not easy to fall off, and the anti-pilling performance of the fabric is lower, which is one of the root causes that the anti-pilling performance of the existing polyester fiber is far lower than that of the natural fiber.
The existing moisture absorption and sweat releasing polyester staple fiber also has the problems. The moisture absorption and sweat releasing type polyester staple fibers generally adopt various groove-shaped spinneret plates, conventional polyester or modified polyester is used as a raw material for melt spinning, grooves are formed in the surface of the obtained fiber, the moisture absorption and drainage performance is superior to that of the conventional polyester staple fibers, meanwhile, the surface friction force of the fiber is increased due to the grooves in the surface, and the anti-pilling performance is superior to that of the conventional round polyester staple fibers, but the anti-pilling performance of a pure-spinning or polyester-cotton blended fabric made of the existing moisture absorption and sweat releasing type polyester staple fibers is improved compared with that of the conventional polyester staple fibers due to the fact that the physical performance of the breaking elongation of the polyester staple fibers is not similar to that of natural cotton and wool fibers, but the effect is not obvious. The breaking strength and the breaking elongation of the existing moisture-absorbing sweat-releasing polyester staple fiber can not be reduced, the breaking elongation is between 20 and 40 percent, and the breaking strength is between 2.0 and 4.5 cN/dt. The moisture absorption and sweat releasing type polyester staple fibers in the prior art and products have the problems of low strength and large elongation, which results in no obvious improvement on the anti-pilling effect. The existing melt spinning production method can not reduce the breaking strength and the breaking elongation of the polyester fiber at the same time, and the existing polyester fiber product can not be closer to the natural cotton fiber and the wool fiber in the basic physical properties.
Disclosure of Invention
The purpose of the invention is as follows: the first purpose of the invention is to provide a moisture-absorbing and sweat-releasing type polyester staple fiber which can simultaneously reduce the breaking strength and the breaking elongation of the polyester fiber and has good pilling resistance, and the second purpose of the invention is to provide a preparation method of the moisture-absorbing and sweat-releasing type polyester staple fiber.
The technical scheme is as follows: the moisture-absorbing and sweat-releasing polyester staple fiber disclosed by the invention comprises the following raw material components: the breaking strength of the polyester staple fiber is 2.0-3.5cN/dt, and the breaking elongation of the moisture-absorbing and sweat-releasing polyester staple fiber is lower than 20%.
The preparation method of the moisture absorption and sweat releasing type polyester staple fiber comprises the following steps:
the moisture-absorbing and sweat-releasing polyester staple fiber is prepared by taking one of hydrophilic modified polyester chips, cationic modified polyester chips, polyamide ester modified polyester chips or polyalcohol modified polyester chips as a raw material, melting at a feeding section, a preheating section and a melting section of an extrusion screw, wherein the melting temperature is 30-40 ℃ higher than the melting point of the modified polyester chips, cooling to 5-30 ℃ above the melting point of the chips at a mixing and metering section of the screw, and spinning, drawing and curling at the melt temperature of 240-275 ℃.
The preparation method of the invention adopts high-temperature melting and ultralow-temperature spinning technologies, reasonably utilizes the influence of the polyester melt fracture principle on the fiber performance, and the anti-pilling performance of the fabric prepared by the invention is 1-1.5 grade higher than that of the conventional moisture-absorbing sweat-releasing polyester staple fiber. Melting point of the modified polyester chip the Tm peak was measured using DSC.
The feed section of the extrusion screw was 270 ℃ and 295 ℃. The temperature of the mixing and metering section of the screw is 10-30 ℃ lower than that of the preheating section and the melting section.
The temperature of the conveying pipeline and the box body is consistent with the setting of the mixing and metering section of the extrusion screw. The modified polyester chip is melt spun by a spinneret plate with groove-shaped micropores. The shape of the groove-shaped micro-hole is one of a cross shape, an H shape or a W shape.
Preferably, the spinning speed is 1100-1300 m/min. And in the spinning process, the breaking elongation of the protofilament in the stress-strain stretching is controlled to be between 200 and 300 percent. And in the spinning process, the breaking strength of the precursor in stress-strain stretching is controlled to be 0.6-1.1 cN/dt.
The invention improves the thermoplastic nature (melt keeps excellent fluidity in a wider temperature range at a higher temperature and ensures that the fiber has higher strength and elongation, namely toughness) of the polyester and the characteristics of the prior production technology (high-temperature melting and high-temperature spinning, the temperature is high limit without great thermal degradation), reasonably utilizes the melt fracture principle, adopts the high-temperature melting and ultralow-temperature spinning technology, carries out high-temperature melting at the feeding section, the preheating section and the melting section of an extrusion screw to ensure that chips are smoothly fed and completely melted, carries out low-temperature cooling at the spinning section to reduce the fluidity of the melt and ensure that the melt has certain thermoplasticity and can be smoothly spun, the strength and elongation of the obtained protofilament are reduced, the extensibility is reduced, and the finished fiber has lower breaking strength and breaking elongation.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the breaking strength and the breaking elongation of the moisture-absorbing and sweat-releasing polyester staple fiber are both low, the breaking strength and the breaking elongation of the moisture-absorbing and sweat-releasing polyester staple fiber are both close to natural cotton and wool fibers, the breaking strength is 2.0-3.5cN/dt, and the elongation is 5-20%; the polyester staple fiber can be pure spun or blended with cotton and wool, and the anti-pilling effect of the obtained fabric is superior to that of the existing anti-pilling polyester staple fiber by 1 grade to 1.5 grade; the preparation method is simple to operate and easy to realize.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1
(1) Synthesis of hydrophilic polyesters
A 300L polymerization apparatus was used, and terephthalic acid: 150Kg, ethylene glycol: 80Kg, a polymerization catalyst and an ether inhibitor were added to the mixture to obtain a predetermined esterification ratio by esterification reaction. Adding 11000 Kg and 14.5Kg of polyethylene glycol under normal pressure, stirring for 10min, passing through a low vacuum stage of 45min, and transferring to a polycondensation stage, when the stirring current reaches a predetermined target, cooling and granulating the melt. Conventional quality indexes of the hydrophilic polyester chip are as follows: intrinsic viscosity 0.680dL/g, carboxyl end groups: 32mol/t, diethylene glycol: 1.2 percent.
(2) Melt spinning
Hydrophilic PET slices are used as raw materials and put into a vacuum drum or a fluidized bed type pre-crystallization dryer for pre-crystallization drying.
And adding the pre-crystallized and dried hydrophilic PET slices into a screw extruder for melt spinning, wherein a spinneret plate adopts cross-shaped micropores. The temperature of the screw feeding section is set to be 270 ℃, the temperature of the preheating section and the melting section are set to be 290 ℃, the temperature of the mixing and metering section is set to be 265 ℃, the temperature of a conveying pipeline and a box body is consistent with the temperature of the screw metering section, the pressure of a spinning assembly is about 8.3Mpa, the spinning speed is 1100m/min, the wind speed is set to be 0.4 +/-0.03 m/s, the breaking elongation of the obtained protofilament is 300.0 percent, and the breaking strength is 0.60 cN/dt.
(3) Post-processing
Bundling the precursor fiber, drafting, curling, cutting and the like on conventional polyester staple fiber production equipment to obtain finished staple fiber, and then packaging. The total drafting ratio is set to be 3.2 times, the first drafting ratio is 2.9 times, the second drafting ratio is 1.1 times, the tension heat setting temperature is 150 ℃, and other process settings are similar to the conventional PET protofilament so as to ensure the stable production operation.
The resulting staple had a breaking strength of 3.27cN/dt and an elongation at break of 9.9%.
(4) Fabric and pilling resistance test
The method for testing the fuzzing and pilling of the fabric comprises the following steps: martindale method, national standard execution GB/T4802.2, international standard execution ISO 12945-2, YG (B)401T Martindale wear-resisting and pilling performance tester.
The ring spinning machine spins the yarn, the yarn specification is 19.5Tex, the common twist is 78/10 cm, and the twist factor is 330.
The ZJ-S4R0681 concave-convex card double-faced knitting machine is used for weaving, 8 yarns are fed, and the weft is in a plain weave.
The knitted fabric obtained by spinning the staple fiber had a pilling resistance rating of 4.0.
Example 2
(1) Synthesis of hydrophilic polyesters
A 300L polymerization apparatus was used, and terephthalic acid: 150Kg, ethylene glycol: 80Kg, a polymerization catalyst and an ether inhibitor were added to the mixture to obtain a predetermined esterification ratio by esterification reaction. Adding 2000 Kg and 6.7Kg of polyethylene glycol under normal pressure, stirring for 10min, performing 45min low vacuum stage, transferring to polycondensation stage, cooling the melt when the stirring current reaches the preset target, and granulating. Conventional quality indexes of the hydrophilic polyester chip are as follows: intrinsic viscosity of 0.670dL/g, carboxyl end group: 34mol/t, diethylene glycol: 1.3 percent.
(2) Melt spinning
Hydrophilic PET slices are used as raw materials and put into a vacuum drum or a fluidized bed type pre-crystallization dryer for pre-crystallization drying.
And adding the pre-crystallized and dried hydrophilic PET slices into a screw extruder for melt spinning, wherein the spinneret plate adopts H-shaped micropores. The temperature of the screw feeding section is set to 275 ℃, the temperature of the preheating section and the melting section are set to 290 ℃, the temperature of the mixing and metering section is set to 268 ℃, the temperature of the conveying pipeline and the temperature of the box body are consistent with the temperature of the screw metering section, the pressure of a spinning assembly is about 98Mpa, the spinning speed is 1100m/min, the wind speed is set to 0.4 +/-0.03 m/s, the breaking elongation of the obtained protofilament is 256.0%, and the breaking strength is 0.76 cN/dt.
(3) Post-processing
Bundling the precursor fiber, drafting, curling, cutting and the like on conventional polyester staple fiber production equipment to obtain finished staple fiber, and then packaging. The total drafting ratio is set to be 3.0 times, the first drafting ratio is 2.7 times, the second drafting ratio is 1.1 times, the tension heat setting temperature is 150 ℃, and other process settings are similar to the conventional PET protofilament so as to ensure the stable production operation.
The resulting staple had a breaking strength of 2.00cN/dt and an elongation at break of 14.2%.
(4) Fabric and pilling resistance test
The method for testing the fuzzing and pilling of the fabric comprises the following steps: martindale method, national standard execution GB/T4802.2, international standard execution ISO 12945-2, YG (B)401T Martindale wear-resisting and pilling performance tester.
The ring spinning machine spins the yarn, the yarn specification is 19.7Tex, the common twist is 78/10 cm, and the twist factor is 330.
The ZJ-S4R0681 concave-convex card double-faced knitting machine is used for weaving, 8 yarns are fed, and the weft is in a plain weave.
The knitted fabric obtained by spinning the staple fiber had a pilling resistance rating of 4.0.
Example 3
(1) Synthesis of hydrophilic polyesters
A 300L polymerization apparatus was used, and terephthalic acid: 150Kg, ethylene glycol: 80Kg, a polymerization catalyst and an ether inhibitor were added to the mixture to obtain a predetermined esterification ratio by esterification reaction. Adding 19000 and 12.1Kg of polyethylene glycol under normal pressure, stirring for 10min, performing 45min low vacuum stage, performing polycondensation, cooling the melt when the stirring current reaches the predetermined target, and granulating. Conventional quality indexes of the hydrophilic polyester chip are as follows: intrinsic viscosity 0.681dL/g, carboxyl end groups: 29mol/t, diethylene glycol: 1.1 percent.
(2) Melt spinning
Hydrophilic PET slices are used as raw materials and put into a vacuum drum or a fluidized bed type pre-crystallization dryer for pre-crystallization drying.
And adding the pre-crystallized and dried hydrophilic PET slices into a screw extruder for melt spinning, wherein a spinneret plate adopts W-shaped micropores. The temperature of the screw feeding section is set to 275 ℃, the temperature of the preheating section and the melting section are set to 295 ℃, the temperature of the mixing and metering section is set to 262 ℃, the temperature of the conveying pipeline and the temperature of the box body are consistent with the temperature of the screw metering section, the pressure of a spinning assembly is about 99MPa, the spinning speed is 1300m/min, the wind speed is set to 0.4 +/-0.03 m/s, the breaking elongation of the obtained protofilament is 200.0 percent, and the breaking strength is 1.1 cN/dt.
(3) Post-processing
Bundling the precursor fiber, drafting, curling, cutting and the like on conventional polyester staple fiber production equipment to obtain finished staple fiber, and then packaging. The total drafting ratio is set to be 3.14 times, the first drafting ratio is 2.85 times, the second drafting ratio is 1.1 times, the tension heat setting temperature is 150 ℃, and other process settings are similar to those of the conventional PET protofilament so as to ensure the stable production operation.
The resulting staple had a breaking strength of 3.12cN/dt and an elongation at break of 10.2%.
(4) Fabric and pilling resistance test
The method for testing the fuzzing and pilling of the fabric comprises the following steps: martindale method, national standard execution GB/T4802.2, international standard execution ISO 12945-2, YG (B)401T Martindale wear-resisting and pilling performance tester.
The ring spinning machine spins the yarn, the yarn specification is 19.6Tex, the common twist is 78/10 cm, and the twist factor is 330.
ZJ-S4R0681 concavo-convex double-sided knitting machine weaving, 8 yarn feeding, plain weft weave, 180g/m2。
The short fibers obtained by the same process spinning method by adopting the short fibers of the comparative example 1.2 and the example 1.2.3 have the tensile property and the anti-pilling grade property of the knitted fabric shown in the table 1.
Example 4
(1) Melt spinning
Cation slice CDP is used as raw material, and is put into a vacuum rotary drum or a boiling bed type pre-crystallization dryer for pre-crystallization drying.
And adding the CDP slices after the pre-crystallization and drying into a screw extruder for melt spinning, wherein the spinneret plate adopts H-shaped micropores. The temperature of a screw feeding section is set to 275 ℃, the temperature of a preheating section and a melting section are set to 290 ℃, the temperature of a mixing and metering section is set to 266 ℃, the temperature of a conveying pipeline and a box body is set to 266 ℃, the pressure of a spinning assembly is about 87Mpa, the spinning speed is 1100m/min, the wind speed is set to 0.6 +/-0.03 m/s, the breaking elongation of the obtained protofilament is 292.0 percent, and the breaking strength is 0.72 cN/dt.
(2) Post-processing
Bundling the precursor fiber, drafting, curling, cutting and the like on conventional polyester staple fiber production equipment to obtain finished staple fiber, and then packaging. The total drafting ratio is set to be 3.50 times, the first drafting ratio is 3.2 times, the second drafting ratio is 1.1 times, the tension heat setting temperature is 150 ℃, and other process settings are similar to the conventional PET protofilament so as to ensure the stable production operation.
The resulting staple had a breaking strength of 3.32cN/dt and an elongation at break of 19.8%.
(3) Fabric and pilling resistance test
The method for testing the fuzzing and pilling of the fabric comprises the following steps: martindale method, national standard execution GB/T4802.2, international standard execution ISO 12945-2, YG (B)401T Martindale wear-resisting and pilling performance tester.
The ring spinning machine spins the yarn, the yarn specification is 19.7Tex, the common twist is 78/10 cm, and the twist factor is 330.
The ZJ-S4R0681 concave-convex card double-faced knitting machine is used for weaving, 8 yarns are fed, and the weft is in a plain weave.
The knitted fabric obtained by spinning the staple fiber had a pilling resistance rating of 4.0.
Example 5
(1) Melt spinning
Polyol modified slices are used as raw materials, and put into a vacuum drum or a fluidized bed type pre-crystallization dryer for pre-crystallization drying.
And adding the polyol modified slices after the pre-crystallization and drying into a screw extruder for melt spinning, wherein the spinneret plate adopts H-shaped micropores. The temperature of the screw feeding section is set to be 270 ℃, the temperature of the preheating section and the melting section are set to be 273 ℃, the temperature of the mixing and metering section is set to be 240 ℃, the temperature of the conveying pipeline and the box body is set to be 240 ℃, the pressure of a spinning assembly is about 98Mpa, the spinning speed is 1100m/min, the wind speed is set to be 0.5 +/-0.03 m/s, the breaking elongation of the obtained protofilament is 287.0%, and the breaking strength is 0.69 cN/dt.
(2) Post-processing
Bundling the precursor fiber, drafting, curling, cutting and the like on conventional polyester staple fiber production equipment to obtain finished staple fiber, and then packaging. The total drafting ratio is set to be 3.48 times, the first drafting ratio is 3.17 times, the second drafting ratio is 1.1 times, the tension heat setting temperature is 150 ℃, and other process settings are similar to those of the conventional PET protofilament so as to ensure the stable production operation.
The resulting staple had a breaking strength of 3.16cN/dt and an elongation at break of 18.7%.
(3) Fabric and pilling resistance test
The method for testing the fuzzing and pilling of the fabric comprises the following steps: martindale method, national standard execution GB/T4802.2, international standard execution ISO 12945-2, YG (B)401T Martindale wear-resisting and pilling performance tester.
The ring spinning machine spins the yarn, the yarn specification is 19.7Tex, the common twist is 78/10 cm, and the twist factor is 330.
The ZJ-S4R0681 concave-convex card double-faced knitting machine is used for weaving, 8 yarns are fed, and the weft is in a plain weave.
The knitted fabric obtained by spinning the staple fiber had a pilling resistance rating of 4.0.
Example 6
(1) Melt spinning
The polyesteramide slices are used as raw materials and put into a vacuum drum or a fluidized bed type pre-crystallization dryer for pre-crystallization drying.
And (3) adding the polyamide ester slices after the pre-crystallization and drying into a screw extruder for melt spinning, wherein the spinneret plate adopts H-shaped micropores. The temperature of the screw feeding section is set to 295 ℃, the temperature of the preheating section and the melting section are set to 293 ℃, the temperature of the mixing and metering section is set to 270 ℃, the temperature of the conveying pipeline and the temperature of the box body are consistent with the temperature of the screw metering section, the pressure of a spinning assembly is about 95MPa, the spinning speed is 1100m/min, the wind speed is set to 0.4 +/-0.03 m/s, the breaking elongation of the obtained protofilament is 264.0 percent, and the breaking strength is controlled to 0.72 cN/dt.
(2) Post-processing
Bundling the precursor fiber, drafting, curling, cutting and the like on conventional polyester staple fiber production equipment to obtain finished staple fiber, and then packaging. The total drafting ratio is set to be 3.08 times, the first drafting ratio is 2.8 times, the second drafting ratio is 1.1 times, the tension heat setting temperature is 150 ℃, and other process settings are similar to those of the conventional PET protofilament so as to ensure the stable production operation.
The resulting staple had a breaking strength of 2.98cN/dt and an elongation at break of 20.0%.
(3) Fabric and pilling resistance test
The method for testing the fuzzing and pilling of the fabric comprises the following steps: martindale method, national standard execution GB/T4802.2, international standard execution ISO 12945-2, YG (B)401T Martindale wear-resisting and pilling performance tester.
The ring spinning machine spins the yarn, the yarn specification is 19.7Tex, the common twist is 78/10 cm, and the twist factor is 330.
The ZJ-S4R0681 concave-convex card double-faced knitting machine is used for weaving, 8 yarns are fed, and the weft is in a plain weave.
The knitted fabric obtained by spinning the staple fiber had a pilling resistance rating of 4.0.
Comparative example 1
The procedure and the testing method of this comparative example are the same as those of example 1, and the process parameters are shown in Table 1.
Comparative example 2
The procedure and the testing method of this comparative example are the same as those of example 1, and the process parameters are shown in Table 1.
TABLE 1 Process and fiber physical indices for examples and comparative examples
Claims (10)
1. The moisture-absorbing and sweat-releasing type polyester staple fiber is characterized in that the raw material of the polyester staple fiber is one of hydrophilic modified polyester, cationic modified polyester, polyamide ester modified polyester or polyalcohol modified polyester, the breaking strength of the polyester staple fiber is 2.0-3.5cN/dt, and the breaking elongation of the polyester staple fiber is lower than 20%.
2. A method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 1, which is characterized by comprising the following steps: the moisture-absorbing and sweat-releasing polyester staple fiber is prepared by taking one of hydrophilic modified polyester chips, cationic modified polyester chips, polyamide ester modified polyester chips or polyalcohol modified polyester chips as a raw material, melting the raw material in a feeding section, a preheating section and a melting section of an extrusion screw, wherein the temperature of the preheating section and the melting section is 30-40 ℃ higher than the melting point of the modified polyester chips, cooling the raw material to 5-30 ℃ above the melting point of the chips in a mixing and metering section of the screw, and spinning, drawing and curling the raw material at the melt temperature of 240-275 ℃.
3. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: the feed section of the extrusion screw was 270-.
4. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: the temperature of the conveying pipeline and the box body is consistent with the setting of the mixing and metering section of the extrusion screw.
5. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: the temperature of the mixing and metering section of the screw is 10-30 ℃ lower than that of the preheating section and the melting section.
6. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: the modified polyester chip is subjected to melt spinning by adopting a spinneret plate with groove-shaped micropores.
7. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 6, wherein the method comprises the following steps: the shape of the groove-shaped micropore is one of a cross shape, an H shape or a W shape.
8. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: the spinning speed is 1100-1300 m/min.
9. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: in the spinning process, the breaking elongation of the protofilament in stress-strain stretching is controlled to be between 200 and 300 percent.
10. The method for preparing moisture-absorbing and sweat-releasing polyester staple fiber according to claim 2, wherein the method comprises the following steps: in the spinning process, the breaking strength of the precursor in stress-strain stretching is controlled to be 0.6-1.1 cN/dt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877689.1A CN114108123B (en) | 2020-08-27 | 2020-08-27 | Moisture-absorbing sweat-releasing polyester staple fiber and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877689.1A CN114108123B (en) | 2020-08-27 | 2020-08-27 | Moisture-absorbing sweat-releasing polyester staple fiber and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114108123A true CN114108123A (en) | 2022-03-01 |
| CN114108123B CN114108123B (en) | 2023-08-18 |
Family
ID=80374521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010877689.1A Active CN114108123B (en) | 2020-08-27 | 2020-08-27 | Moisture-absorbing sweat-releasing polyester staple fiber and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114108123B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424443A (en) * | 2001-12-11 | 2003-06-18 | 上海第十化学纤维厂 | Production for cationic chromophilous anti-pilling polyester flock |
| CN1563521A (en) * | 2004-04-13 | 2005-01-12 | 东华大学 | Multifunctional chromatophil copolyester fiber in high rate of retention and profile spinneret adopted |
| CN102094256A (en) * | 2010-12-21 | 2011-06-15 | 浙江恒逸高新材料有限公司 | Method for producing modified cation polyester filament and product thereof |
| CN102534843A (en) * | 2010-12-31 | 2012-07-04 | 上海德福伦化纤有限公司 | Production method of modified polyester fiber capable of resisting pilling |
| CN103710782A (en) * | 2013-10-30 | 2014-04-09 | 上海德福伦化纤有限公司 | High-moisture-absorption easy-dying cotton-imitating polyester short fiber and preparation method thereof |
| CN103952790A (en) * | 2014-04-10 | 2014-07-30 | 中国石油化工股份有限公司 | Anti-pilling polyesteramide short fiber |
-
2020
- 2020-08-27 CN CN202010877689.1A patent/CN114108123B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424443A (en) * | 2001-12-11 | 2003-06-18 | 上海第十化学纤维厂 | Production for cationic chromophilous anti-pilling polyester flock |
| CN1563521A (en) * | 2004-04-13 | 2005-01-12 | 东华大学 | Multifunctional chromatophil copolyester fiber in high rate of retention and profile spinneret adopted |
| CN102094256A (en) * | 2010-12-21 | 2011-06-15 | 浙江恒逸高新材料有限公司 | Method for producing modified cation polyester filament and product thereof |
| CN102534843A (en) * | 2010-12-31 | 2012-07-04 | 上海德福伦化纤有限公司 | Production method of modified polyester fiber capable of resisting pilling |
| CN103710782A (en) * | 2013-10-30 | 2014-04-09 | 上海德福伦化纤有限公司 | High-moisture-absorption easy-dying cotton-imitating polyester short fiber and preparation method thereof |
| CN103952790A (en) * | 2014-04-10 | 2014-07-30 | 中国石油化工股份有限公司 | Anti-pilling polyesteramide short fiber |
Non-Patent Citations (1)
| Title |
|---|
| 房迪等: "聚酰胺酯纤维及其纱线性能探讨", 《棉纺织技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114108123B (en) | 2023-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102213562B1 (en) | Process for the preparation of a fiber, a fiber and a yarn made from such a fiber | |
| CN107502974A (en) | A kind of method that covering yarn of chopped fiber bag micropore alkali soluble polyester long filament prepares hollow woven product | |
| CN110644073B (en) | Preparation method of polyester-nylon parallel composite elastic fiber | |
| CN108463583A (en) | Polylactic resin fiber, polylactic acid long fibre, polylactic acid short-fiber and acid fiber by polylactic | |
| KR20020011401A (en) | Fine Denier Yarn from Poly(Trimethylene Terephthalate) | |
| JP2003293220A (en) | Method for producing polylactic acid fiber having excellent heat resistance | |
| CN102345180A (en) | M-phthalic acid modified terylene low elastic network fiber | |
| CN114108123B (en) | Moisture-absorbing sweat-releasing polyester staple fiber and preparation method thereof | |
| CN114108111B (en) | Cotton-like polyester staple fiber and preparation method thereof | |
| CN114232127B (en) | Ultralow-thermal-shrinkage polyester staple fiber and preparation method thereof | |
| US20120009418A1 (en) | Poly(trimethylene arylate) fibers, process for preparing, and fabric prepared therefrom | |
| JP5964437B2 (en) | Poly (trimethylene arylate) fiber, method for making the same, and fabric made therefrom | |
| US20140234623A1 (en) | Poly(trimethylene arylate) fibers, process for preparing, and fabric prepared therefrom | |
| KR101427795B1 (en) | Biodegradable Polyester Yarns with Natural Fiber-like Characteristics and Process of preparing same | |
| Gupta | Manufactured textile fibers | |
| Gupta | Manufactured textile fibers | |
| US8753741B2 (en) | Poly(trimethylene arylate) fibers, process for preparing, and fabric prepared therefrom | |
| US20110263171A1 (en) | Poly(trimethylene arylate) fibers, process for preparing, and fabric prepared therefrom | |
| JPH01272862A (en) | Cation dyeable polyester fiber excellent in feeling and production thereof | |
| WO2012116481A1 (en) | Modified copolyester, preparation method and fibre thereof | |
| CN114717684A (en) | Chemical fiber material prepared from mixed polyester | |
| US8540912B2 (en) | Process of making poly(trimethylene arylate) fibers | |
| JP2024020113A (en) | Core-sheath composite fiber | |
| JPH0291218A (en) | Polyester yarn having ramie-like feeling and production thereof | |
| CN106592039A (en) | Modified polyester fibre and regenerated cellulose fibre fabrics, and preparation method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |