CN114150396A - Snowflake hollow down fiber and preparation method thereof - Google Patents
Snowflake hollow down fiber and preparation method thereof Download PDFInfo
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- CN114150396A CN114150396A CN202111668916.0A CN202111668916A CN114150396A CN 114150396 A CN114150396 A CN 114150396A CN 202111668916 A CN202111668916 A CN 202111668916A CN 114150396 A CN114150396 A CN 114150396A
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- 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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- 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
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
-
- 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
-
- 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 snowflake hollow down fiber and a preparation method thereof, the snowflake hollow down fiber adopts a melt direct spinning technology, adopts purified terephthalic acid and ethylene glycol as main raw materials to carry out continuous large-scale production, has uniform melt quality, can ensure stable fiber quality, and has lower cost advantage, adopts a circular blowing cylinder air cooling process, ensures uniform and sufficient cooling conditions, has low unevenness of product evenness, and has good dyeing stability.
Description
Technical Field
The invention relates to a snowflake hollow down fiber and a preparation method thereof.
Background
The hollow terylene is chemical fiber with a thin tubular cavity in the axial direction, and the chemical fiber with a tubular cavity in the axial direction penetrates through the fiber. The method is characterized in that: 1. lighter and warmer: the high hollow structure reduces the weight of the fiber by 20 percent and can contain a large amount of still air, so that the fabric is light and the heat-insulating property of the fabric is improved by 65 percent compared with that of the common homogeneous fabric; 2. plump and soft: the product becomes the fabric and brings more plump, glutinous and smooth comfortable sensation; 3. dry and moisture permeable: compared with daily heavy warm-keeping fabrics, the fabric is more moisture permeable, dry and comfortable. The product is widely applied to the fields of thermal underwear, close-fitting underwear, sports clothes, casual clothes, shirts, outdoor sports, blankets and the like.
Aiming at the current industrial situation, the pursuit of differentiation of chemical fiber products has become a development trend of the chemical fiber industry. The differentiation rate of chemical fiber products is an important index reflecting the technical level of chemical fiber production in China, the chemical fiber industry in China is mainly based on capacity expansion of conventional fibers at present, the problems of normalization, homogenization and the like of the products are obvious, the differentiation rate of the chemical fiber products in China has a large difference compared with the developed countries, and the development of novel and functional products becomes the main attack direction and new profit growth point of numerous enterprises for enhancing enterprise competitiveness and improving enterprise living space. In view of the situation, after extensive market research, the inventor finds that few companies are available in the current market for producing triangular hollow profiled fibers, the number of products is small, and once the research is successful, the method has good economic benefit.
Therefore, in order to further develop the product sale market of companies, increase the added value of products and increase the profit space, a snowflake hollow down fiber and a preparation method thereof are provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a snowflake hollow down fiber and a preparation method thereof. The product of the invention has the advantages of low cost, good dyeing stability and good product quality.
The technical scheme of the invention is as follows:
a preparation method of snowflake hollow down fibers comprises the following steps:
s 1: adding ethylene glycol and purified terephthalic acid into a slurry preparation tank, pumping the prepared slurry into a buffer tank by a pump, continuously metering the slurry and feeding the slurry into an esterification kettle, and esterifying the slurry at 21kpa g of pressure and 267.5 ℃ under the self-circulation action of the materials to form oligomers; the obtained oligomer is pumped into a pre-polycondensation kettle, a catalyst, a delustering agent and diethylene glycol are added on an oligomer conveying pipeline by using a nozzle and a static mixer, and the polycondensation reaction is carried out at the vacuum of 20mmHg and the temperature of 284 ℃ to generate a prepolymer; then, the prepolymer is sent into a final polycondensation kettle by utilizing the pressure difference and the liquid level, the reaction is carried out under the vacuum condition of 2.1mmHg, the temperature of 284.5 ℃ and the squirrel-cage stirring action of the final polycondensation kettle, and the viscosity is controlled to be 50cv +/-1 by calculating a TOV viscometer so as to reach the polycondensation end point;
wherein:
the raw material ethylene glycol can be ethylene glycol recovered and refined in esterification and polycondensation processes, and the molar ratio of the ethylene glycol to the purified terephthalic acid is 1.5-2: 1, preferably the density of the slurry prepared from the ethylene glycol and the purified terephthalic acid is 1305KG/m3；
The catalyst is ethylene glycol antimony which is a common polyester catalyst, and the addition amount of the ethylene glycol antimony is 280-330 PPM of the mass of the oligomer;
the matting agent is titanium dioxide, and the addition amount of the matting agent is 0.25% +/-0.03% of the mass of the oligomer;
the addition amount of the diglycol is 1.37% +/-0.05% of the mass of the oligomer;
carrying out pre-polycondensation and final polycondensation by adopting EG steam jet pump for vacuum pumping; the final polycondensation kettle adopts a DuPont three-kettle process technology, the intrinsic viscosity of the melt obtained by final polycondensation is 0.618 +/-0.03 d1/g, the content of terminal carboxyl is 45 +/-0.05 Mol/t, and the content of diethylene glycol is 1.37 +/-0.05%;
s 2: the melt discharged from the final polycondensation kettle is pumped out by a melt pump, is filtered by a melt filter, is transported to a melt cooler by a melt booster pump to be cooled to 277-280 ℃, is transported to a spinning manifold by a multistage static mixer, is oiled after being cooled and formed by spinning formed by the spinning manifold, is guided by a guide wire disc, is wound and formed, and is subjected to product detection;
wherein:
the pressure of a spinning assembly in the spinning box body reaches 180-200 bar, the shearing and homogenizing effects of the melt in the assembly are enhanced, and the flowing performance of the melt is improved; the spinning adopts complete set of German Bamag box equipment and a circular blowing cooling process, and the spinning adopts a 104mm spinneret plate and a triangular hollow single cake design;
during oiling, the oil frame slightly inclines to form an angle of minus 3-5 degrees with the horizontal plane (as shown in figure 3), so that the friction resistance is reduced; the oiling nozzle adopts a novel small xylonite oil nozzle, so that the spinning tension uniformity is better; the height of an oil frame is 800mm, the wind pressure is 25Pa, the winding speed is 2800m/min, the full-roll weight is 11.5Kg, and the full-roll diameter is within 425 mm;
the winding head is wound by adopting a Bamag ACW (acid-fiber conductor) to ensure the quality of the tail fiber;
s 3: qualified products after product detection are packaged in a grading way and then leave the factory;
the product detection adopts a domestic YG139C-J evenness tester and a domestic single yarn strength tester, and utilizes a nuclear magnetic resonance tester-MQC to measure the oil content of the fiber.
Compared with the prior art, the invention has the beneficial effects that:
1. the melt direct spinning technology is adopted, the purified terephthalic acid and the ethylene glycol are used as main raw materials for continuous large-scale production, the melt quality is uniform, the stable fiber quality can be ensured, and the melt direct spinning technology has a lower cost advantage;
2. by executing the process route of low-temperature conveying and high-temperature spinning, the viscosity of the non-oil silk is reduced by no more than 0.015d 1/g;
3. partial equipment and process conditions in spinning and winding links are greatly improved, and a plurality of new technologies are developed and applied.
Drawings
FIG. 1: a polyester filament process flow diagram.
FIG. 2: the invention is a structural schematic diagram of a triangular hollow finished product.
FIG. 3: oil rack inclination angle schematic.
Detailed Description
The invention is further described below by means of specific examples, without the scope of protection of the invention being limited thereto.
Example 1:
a snowflake hollow down fiber and a preparation method thereof, wherein the snowflake hollow down fiber comprises purified terephthalic acid and ethylene glycol in a molar ratio of 1.76: 1 EG and PTA are mixed.
The method comprises the following steps:
s 1: adding ethylene glycol and purified terephthalic acid into a slurry preparation tank (controlling the slurry density to 1305 KG/m)3) And the prepared slurry is pumped into a buffer tank by a pump and is continuously metered into an esterification kettle. Esterification is carried out for 2 hours under the certain pressure of 21kpa g, the temperature of 267.5 ℃ and the self-circulation of materials to form oligomer, and the oligomer is pumped into a pre-polycondensation kettle. 0.48 kg/ton of ethylene glycol antimony catalyst, 2.39 kg/ton of delustering agent titanium dioxide and 7.23 kg/ton of diethylene glycol are added into an oligomer conveying pipeline by using a nozzle and a static mixer, the esterification product is subjected to polycondensation reaction for 1.5 hours under certain vacuum of 20mmHg and at the temperature of 284 ℃, and the generated prepolymer is conveyed into a final polycondensation kettle by using pressure difference and liquid level. The prepolymer was reacted for 0.5 hour under high vacuum of 2.1mmhg, high temperature of 284.5 ℃ and squirrel-cage stirring in the final polymerization reactor, and the polycondensation end point was reached by calculating viscosity 50cv controlled by TOV viscometer.
The precondensation and the final polycondensation are evacuated by EG steam jet pumps.
The final polymerization kettle adopts a DuPont three-kettle process technology, the melt intrinsic viscosity is 0.618 plus or minus 0.03d1/g, the carboxyl end group content is 45 plus or minus 0.05Mol/t, and the diethylene glycol content is 1.37 plus or minus 0.05%;
s 2: the melt from the final polymerization kettle is sent out by two melt pumps 1271-P01A/B (a TOV viscometer is arranged behind each melt pump to measure the viscosity of the polyester melt on line), impurities larger than 20 mu m are filtered out by a melt filter, then the melt is conveyed to a melt cooler by a melt booster pump to be cooled to 277-280 ℃, then the melt is conveyed to a spinning box by a multistage static mixer, the spinning formed by the spinning box is cooled and formed, then oiling is carried out, a yarn guide disc is used for guiding the yarn, then winding and forming are carried out, and product detection is carried out;
the spinning adopts complete set of German Bamag box equipment and a circular blowing cooling process, the spinning adopts a 104mm spinneret plate, the triangular hollow single cake design is adopted, the height of an oil frame is 800mm, the wind pressure is 25Pa, the winding speed is 2800m/min, the full-roll weight is 11.5Kg, and the full-roll diameter is within 425 mm;
the micro-inclination angle of the oiling oil frame enables the oiling oil frame to form a negative 4-degree angle with the horizontal plane, the friction resistance is reduced, a novel small malanite oil nozzle is adopted by an oiling nozzle, the spinning tension uniformity is better, and a Bamager ACW winding head is adopted in the winding forming process, so that the quality of tail fibers is ensured;
the pressure of the spinning assembly reaches 180-200 bar, when the assembly is assembled, 5 layers of filter screens are adopted, two 400-mesh edge wrapping screens are contained, specifically, two layers of sand are 60-80 meshes of 80 g, and three layers of sand are 40-60 meshes of 120 g, so that the shearing and homogenizing effects of the melt in the assembly are enhanced, and the flowing property of the melt is improved;
s 3: the qualified products after the product detection are packaged in a grading way, and finally leave the factory;
the product detection adopts a domestic YG139C-J evenness tester and a domestic single yarn strength tester, and utilizes a nuclear magnetic resonance tester-MQC to measure the oil content of the fiber.
The optimization process of the process flow of the invention is as follows:
the subassembly pressure of normal spinning is about 130 ~ 150bar, subassembly pressure control is about 150bar when trying to spin, but many times of experiments are all unsuccessful, later reach 180 ~ 200bar with subassembly pressure, the shearing of fuse-element in the subassembly, the homogenization is strengthened, the flow property of fuse-element is improved, the spinning situation is obviously improved, the ring-blowing technique is adopted in the spinning simultaneously, the windy homogeneity of triangular cross-section is better, and conventional spinning ring-blowing 150D/96F variety all is low oil frame, the technology of high wind pressure, the strip is general grow after going on this hollow dysmorphism variety, average CV value is more than 1.5, lead to the spinning cake all to fall, carry out many times of experiments:
1. the oil frame is not moved, and the wind pressure is tested from high to low;
2. the wind pressure is not moved, and the oil frame is tested from high to low;
finally, the oil frame is found to be adjusted upwards, the evenness becomes smaller after the wind pressure is adjusted downwards, the CV value is about 1.2, and the process requirements can be met, and table 1 is attached.
Table 1 oil frame wind pressure test recording table
1. The micro-inclination angle of the oiling oil frame enables the oiling oil frame to form an angle of minus 3-5 degrees with the horizontal plane, the influence of frictional resistance and cooling air resilience is reduced, the spinning tension uniformity is better, 3560 oil nozzles are used before ring-blowing varieties 96F-288F, yarn evenness CVs are all below 1.0, the elongation CV is controlled to be below 2.8, and the production condition is better; however, the product has large evenness, large oil-containing CV and poor production condition, and the evenness CV is controlled to be less than 1.0, the elongation CV is controlled to be less than 2.5 and the oil-containing CV is controlled to be less than 9 percent for a series of oil nozzle tests;
2. the target value cannot be reached by using a Mermanite oil nozzle test, the oil content range is between 0.37 and 0.42 percent, and the oil content CV is large;
3. the novel small xylonite oil nozzle is adopted, the indexes are obviously improved after the oil nozzle is used, the oil content range is between 0.39% and 0.41%, the oil-containing CV is small, the extension CV can be controlled to be below 2.5, the evenness CV can be controlled to be below 1.0, the target is achieved, the design of the novel oil nozzle is lengthened, the tows cannot easily jump out of the oil nozzle, and the generation of few oily yarns is reduced;
winding key technology
The diameter of the full-package doffing yarn is controlled below 428 when 15 kg of the conventional 150D/96F variety is made, the package is simple, but the full-package doffing yarn has the diameter of 430 or less because the variety has a triangular special-shaped section, the full-package doffing yarn has a large influence on the package when 15 kg of the conventional tension is used, and the tension of the variety is reduced by 1-2 g because the full-package doffing yarn has more fluff caused by manual yarn handling, and the full-package diameter is below 425 when 11.5kg of the full-package is made.
TABLE 2 spinning and winding process parameters and technical indices
| Parameter name | 270dtex/96F POY hollow profile |
| Temperature of the tank body/. degree.C | 285±2 |
| Temperature of circular air blast/deg.C | 22 +/-1 (circular blowing) |
| Circular blowing wind pressure/m/s | 25PA |
| Distance/mm between oil nozzle and plate surface | 800-1100 |
| Winding speed/m/min | 2800 |
| Center value of linear density/dtex | 270 |
| Breaking Strength/cN/dtex/cv% | ≧2.50/≦1.8 |
| Elongation at break/%, CV% | 130±4/≦2.5 |
| Evenness CV/%) | ≦1.0 |
TABLE 3 hollow abnormal-shaped tension and coil diameter test recording table of the invention
And (4) packaging qualified products after product detection in a grading manner, and finally leaving the factory.
Adopt triangle-shaped spinneret, this spinneret's advantage shows: a. the outer ring area is fully utilized, and the hole spacing is increased; b. the central imperforate area reduces turbulence effects to a maximum extent; c. the concentric circle arrangement mode makes the fiber thermal insulation performance better.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A preparation method of snowflake hollow down fibers is characterized by comprising the following steps:
s 1: adding ethylene glycol and purified terephthalic acid into a slurry preparation tank, pumping the prepared slurry into a buffer tank by a pump, continuously metering the slurry and feeding the slurry into an esterification kettle, and esterifying the slurry at 21kpa g of pressure and 267.5 ℃ under the self-circulation action of the materials to form oligomers; the obtained oligomer is pumped into a pre-polycondensation kettle, a catalyst, a delustering agent and diethylene glycol are added on an oligomer conveying pipeline by using a nozzle and a static mixer, and the polycondensation reaction is carried out at the vacuum of 20mmHg and the temperature of 284 ℃ to generate a prepolymer; then, the prepolymer is sent into a final polycondensation kettle by utilizing the pressure difference and the liquid level, the reaction is carried out under the vacuum condition of 2.1mmHg, the temperature of 284.5 ℃ and the squirrel-cage stirring action of the final polycondensation kettle, and the viscosity is controlled to be 50cv +/-1 by calculating a TOV viscometer so as to reach the polycondensation end point;
the molar ratio of the ethylene glycol to the purified terephthalic acid is 1.5-2: 1;
the catalyst is ethylene glycol antimony;
the delustering agent is titanium dioxide;
s 2: the melt discharged from the final polycondensation kettle is pumped out by a melt pump, is filtered by a melt filter, is transported to a melt cooler by a melt booster pump to be cooled to 277-280 ℃, is transported to a spinning manifold by a multistage static mixer, is oiled after being cooled and formed by spinning formed by the spinning manifold, is guided by a guide wire disc, is wound and formed, and is subjected to product detection;
during spinning, a 104mm spinneret plate is adopted for spinning, and a triangular hollow single cake design is adopted;
s 3: and (5) finishing qualified products of product detection, and leaving the factory after grading and packaging.
2. The process for preparing snowflake hollow fiber according to claim 1, wherein the density of the slurry prepared from ethylene glycol and purified terephthalic acid in s1 is 1305KG/m3。
3. The method for preparing snowflake hollow flannel fibers according to claim 1, wherein the amount of the catalyst added in s1 is 280 to 330PPM of the oligomer amount.
4. The method of claim 1, wherein the amount of matting agent in s1 is 0.25% ± 0.03% of the amount of oligomer.
5. The method of claim 1, wherein the amount of diethylene glycol added to s1 is 1.37% ± 0.05% of the oligomer mass.
6. The method for preparing snowflake hollow down fiber according to claim 1, wherein the pressure of the spinning pack in the spinning box in s2 is up to 180-200 bar.
7. The method for preparing snowflake hollow down fiber according to claim 1, wherein when oil is applied in s2, the oil shelf is slightly inclined to form an angle of minus 3 to 5 degrees with the horizontal plane.
8. The method for preparing snowflake hollow down fiber according to claim 1, wherein the wind pressure is 25Pa when the spinning is cooled and formed in s2, and the height of oil frame is 800mm when the spinning is oiled.
9. The snowflake hollow down fiber prepared by the preparation method of any one of claims 1 to 8.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603070A (en) * | 2013-10-21 | 2014-02-26 | 桐乡市中辰化纤有限公司 | Preparation method of high-comfort triangular hollow microporous fiber |
| WO2019047588A1 (en) * | 2017-09-07 | 2019-03-14 | 江苏恒科新材料有限公司 | Preparation method for cationic dyeable polyester fiber |
| CN112663153A (en) * | 2020-12-22 | 2021-04-16 | 江苏德力化纤有限公司 | Porous moisture-permeable, warm-keeping and antistatic polyester fiber and preparation method thereof |
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2021
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603070A (en) * | 2013-10-21 | 2014-02-26 | 桐乡市中辰化纤有限公司 | Preparation method of high-comfort triangular hollow microporous fiber |
| WO2019047588A1 (en) * | 2017-09-07 | 2019-03-14 | 江苏恒科新材料有限公司 | Preparation method for cationic dyeable polyester fiber |
| CN112663153A (en) * | 2020-12-22 | 2021-04-16 | 江苏德力化纤有限公司 | Porous moisture-permeable, warm-keeping and antistatic polyester fiber and preparation method thereof |
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