CN113026129A - Heat setting method of high-heat-resistance polylactic acid fiber - Google Patents
Heat setting method of high-heat-resistance polylactic acid fiber Download PDFInfo
- Publication number
- CN113026129A CN113026129A CN202110305117.0A CN202110305117A CN113026129A CN 113026129 A CN113026129 A CN 113026129A CN 202110305117 A CN202110305117 A CN 202110305117A CN 113026129 A CN113026129 A CN 113026129A
- Authority
- CN
- China
- Prior art keywords
- fiber
- polylactic acid
- slices
- fibers
- spinning
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- D01D1/00—Treatment of filament-forming or like material
-
- 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
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
-
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- 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
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/224—Selection or control of the temperature during stretching
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/228—Stretching in two or more steps, with or without intermediate steps
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
Abstract
The application discloses a heat setting method of high heat-resistant polylactic acid fibers, which comprises the following steps: preparing polylactic acid slices, finishing the processing and modification of the polylactic acid raw material, and improving various properties of the modified polylactic acid slices; drying the slices, namely concentrating the polylactic acid slices and then performing vacuum drying treatment for many times to reduce the water content in the slices; melt spinning, namely melting the slices and then spraying the filaments to prepare nascent fibers; high-temperature setting, winding the filamentized spinning at a certain speed, and then stretching and heat-setting the nascent fiber on a preheated hot plate; cooling, namely placing the cooled and filamentized fibers on an oil frame for secondary stretching and shaping; detecting fibers, reducing the defective rate of finished fiber products, and packaging and storing the finished products; the processed fiber has high heat resistance, ultraviolet resistance and antistatic performance, and is convenient for the use of the polylactic acid fiber.
Description
Technical Field
The application relates to a heat setting method, in particular to a heat setting method of high heat-resistant polylactic acid fiber.
Background
The polylactic acid fiber is prepared by using starch-containing agricultural products such as corn, wheat and beet as raw materials, fermenting to generate lactic acid, and then performing polycondensation and melt spinning. The polylactic acid fiber is a synthetic fiber which can be planted as a raw material and is easy to plant, and the waste can be naturally degraded in nature.
When the polylactic acid slices are dried, the temperature is kept inconveniently in the drying time, the moisture content inside the slices is not reduced, the spinning quality is influenced, the spinning is not stretched for two times, the heat setting effect is not ideal, and the polylactic acid fiber raw material is not treated, so that the performances of high heat resistance, ultraviolet resistance, static resistance and the like are influenced, and the use of the polylactic acid fiber is not facilitated. Therefore, a heat setting method of polylactic acid fiber with high heat resistance is proposed to solve the above problems.
Disclosure of Invention
A heat setting method of high heat-resistant polylactic acid fiber comprises the following steps:
(1) preparing polylactic acid slices, namely preparing polylactic acid modified slices by taking polylactic acid master batches as raw materials and adding tourmaline with different contents, so that various properties of the modified polylactic acid slices are improved;
(2) drying the slices, namely conveying the polylactic acid slices to be used by a conveyor, concentrating the polylactic acid slices, and then performing vacuum drying treatment for many times, setting drying time and reducing the water content in the slices;
(3) melt spinning, introducing nitrogen, extruding polylactic acid slices through a screw extruder under the protection of nitrogen, and performing spinning through a spinning assembly to obtain the polylactic acid polylactic;
(4) high-temperature setting, winding the filamentized spinning at a certain speed, then stretching and heat-setting the nascent fiber on a preheated hot plate, and then preparing the fiber into filaments and staple fibers according to the product requirements;
(5) cooling, namely blowing air to the hot plate by adopting two fans to accelerate the cooling of the spun fibers, so as to avoid influence on next processing due to overhigh fiber temperature;
(6) and (3) fiber detection, namely winding the fiber to detect the quality of the finished product of the fiber, observing whether the fiber has a crack or not, reducing the defective rate of the finished product of the fiber, and packaging and storing the finished product.
Further, the raw materials are uniformly soaked in the mixed antistatic agent and the ultraviolet-resistant additive in the step (1) and fished out, when the raw materials are dyed in the step (1), a high-temperature and high-pressure dyeing method is adopted, the dyeing temperature is 45-110 ℃, a leveling agent is added into a dyeing solution, the pH value of the dyeing solution is kept between 4 and 5, the dyeing fastness of the fibers is improved, and the temperature is gradually reduced to 70 ℃ after dyeing for washing and soap boiling.
Further, the drying time in the step (2) is 3 times, the drying time is 4 hours, 8 hours and 12 hours, and the drying temperature ranges from 60 ℃ to 100 ℃.
Further, the time interval between the three drying times in the step (2) is 10 min.
Further, after drying for three times in the step (2), the water content in the polylactic acid slices is reduced to 30ppm, then the polylactic acid slices in the step (2) are subjected to melting treatment in the step (3), the raw materials subjected to melting treatment are filtered by a filter, and then are conveyed to a spinning box body through a metering pump for spinning.
Furthermore, the degradation rate of the nascent fiber can be reduced by introducing nitrogen in the step (3), the aperture of a spinneret plate in the spinning assembly in the step (3) is 0.22mm, the length-diameter ratio is 3.2, and the aperture size of the spun fiber can be replaced in time by using different spinning assemblies.
Further, the preheating temperature of the hot plate in the step (4) is 160 ℃, the stretching of the nascent fiber on the hot plate is bidirectional stretching, the range of the fiber tensile strength is 40-60MPa, and the stretched fiber can be processed by different processing steps to prepare different filaments and staple fibers, so that the application range of the polylactic acid fiber is enlarged.
Further, two fans are located on two sides of the hot plate in the step (5), so that the heat dissipation speed of the fibers is improved, the shaping of the fibers is accelerated, and when the fibers are placed on the oil frame in the step (5), the fibers can be heated by using the hot plate, so that the secondary stretching of the fibers is facilitated.
Further, the spinning speed of the fiber in the step (5) is 1050m/min when the fiber is stretched on an oil frame, and the fiber is secondarily stretched and shaped on the premise of ensuring the fiber stretching amount, so that the whole shaping process of the polylactic acid fiber is completed.
Further, the fiber damaged and broken due to high temperature or tensile strength in the stretching process of the fiber is removed in the step (6), the fiber which is stretched and dyed uniformly is obtained, and the fiber is processed to have smooth surface and antistatic and ultraviolet resistant effects.
The beneficial effect of this application is: the application provides a heat setting method for stretching fibers on an oil frame with a temperature adjusting effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flow chart of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The first embodiment is as follows:
a heat setting method of high heat-resistant polylactic acid fiber comprises the following steps:
(1) preparing polylactic acid slices, namely preparing polylactic acid modified slices by taking polylactic acid master batches as raw materials and adding tourmaline with different contents, so that various properties of the modified polylactic acid slices are improved;
(2) drying the slices, namely conveying the polylactic acid slices to be used by a conveyor, concentrating the polylactic acid slices, and then performing vacuum drying treatment for many times, setting drying time and reducing the water content in the slices;
(3) melt spinning, introducing nitrogen, extruding polylactic acid slices through a screw extruder under the protection of nitrogen, and performing spinning through a spinning assembly to obtain the polylactic acid polylactic;
(4) high-temperature setting, winding the filamentized spinning at a certain speed, then stretching and heat-setting the nascent fiber on a preheated hot plate, and then preparing the fiber into filaments and staple fibers according to the product requirements;
(5) cooling, namely blowing air to the hot plate by adopting two fans to accelerate the cooling of the spun fibers, so as to avoid influence on next processing due to overhigh fiber temperature;
(6) and (3) fiber detection, namely winding the fiber to detect the quality of the finished product of the fiber, observing whether the fiber has a crack or not, reducing the defective rate of the finished product of the fiber, and packaging and storing the finished product.
Further, the raw materials are uniformly soaked in the mixed antistatic agent and the ultraviolet-resistant additive in the step (1) and fished out, when the raw materials are dyed in the step (1), a high-temperature and high-pressure dyeing method is adopted, the dyeing temperature is 66 ℃, a leveling agent is added into a dyeing solution, the pH value of the dyeing solution is kept between 4 and 5, the dyeing fastness of the fibers is improved, and the temperature is gradually reduced to 70 ℃ after dyeing for washing and soap boiling.
Further, in the step (2), the number of drying times is 3, the drying time is 4 hours, 8 hours and 12 hours, and the drying temperature is 70 ℃.
Further, the time interval between the three drying times in the step (2) is 10 min.
Further, after drying for three times in the step (2), the water content in the polylactic acid slices is reduced to 30ppm, then the polylactic acid slices in the step (2) are subjected to melting treatment in the step (3), the raw materials subjected to melting treatment are filtered by a filter, and then are conveyed to a spinning box body through a metering pump for spinning.
Furthermore, the degradation rate of the nascent fiber can be reduced by introducing nitrogen in the step (3), the aperture of a spinneret plate in the spinning assembly in the step (3) is 0.22mm, the length-diameter ratio is 3.2, and the aperture size of the spun fiber can be replaced in time by using different spinning assemblies.
Further, the preheating temperature of the hot plate in the step (4) is 160 ℃, the primary fiber is stretched in a two-way mode on the hot plate, the tensile strength of the fiber is 40MPa, and the stretched fiber can be processed in different processing steps to prepare different filaments and staple fibers, so that the application range of the polylactic acid fiber is enlarged.
Further, two fans are located on two sides of the hot plate in the step (5), so that the heat dissipation speed of the fibers is improved, the shaping of the fibers is accelerated, and when the fibers are placed on the oil frame in the step (5), the fibers can be heated by using the hot plate, so that the secondary stretching of the fibers is facilitated.
Further, the spinning speed of the fiber in the step (5) is 1050m/min when the fiber is stretched on an oil frame, and the fiber is secondarily stretched and shaped on the premise of ensuring the fiber stretching amount, so that the whole shaping process of the polylactic acid fiber is completed.
Further, the fiber damaged and broken due to high temperature or tensile strength in the stretching process of the fiber is removed in the step (6), the fiber which is stretched and dyed uniformly is obtained, and the fiber is processed to have smooth surface and antistatic and ultraviolet resistant effects.
The method is suitable for the heat setting method of the high heat-resistant polylactic acid fiber with smaller tensile strength.
Example two:
a heat setting method of high heat-resistant polylactic acid fiber comprises the following steps:
(1) preparing polylactic acid slices, namely preparing polylactic acid modified slices by taking polylactic acid master batches as raw materials and adding tourmaline with different contents, so that various properties of the modified polylactic acid slices are improved;
(2) drying the slices, namely conveying the polylactic acid slices to be used by a conveyor, concentrating the polylactic acid slices, and then performing vacuum drying treatment for many times, setting drying time and reducing the water content in the slices;
(3) melt spinning, introducing nitrogen, extruding polylactic acid slices through a screw extruder under the protection of nitrogen, and performing spinning through a spinning assembly to obtain the polylactic acid polylactic;
(4) high-temperature setting, winding the filamentized spinning at a certain speed, then stretching and heat-setting the nascent fiber on a preheated hot plate, and then preparing the fiber into filaments and staple fibers according to the product requirements;
(5) cooling, namely blowing air to the hot plate by adopting two fans to accelerate the cooling of the spun fibers, so as to avoid influence on next processing due to overhigh fiber temperature;
(6) and (3) fiber detection, namely winding the fiber to detect the quality of the finished product of the fiber, observing whether the fiber has a crack or not, reducing the defective rate of the finished product of the fiber, and packaging and storing the finished product.
Further, the raw materials are uniformly soaked in the mixed antistatic agent and the ultraviolet-resistant additive in the step (1) and fished out, when the raw materials are dyed in the step (1), a high-temperature and high-pressure dyeing method is adopted, the dyeing temperature is 95 ℃, a leveling agent is added into a dyeing solution, the pH value of the dyeing solution is kept between 4 and 5, the dyeing fastness of the fibers is improved, and the temperature is gradually reduced to 70 ℃ after dyeing for washing and soap boiling.
Further, in the step (2), the number of drying times is 3, the drying time is 4 hours, 8 hours and 12 hours, and the drying temperature is 90 ℃.
Further, the time interval between the three drying times in the step (2) is 10 min.
Further, after drying for three times in the step (2), the water content in the polylactic acid slices is reduced to 30ppm, then the polylactic acid slices in the step (2) are subjected to melting treatment in the step (3), the raw materials subjected to melting treatment are filtered by a filter, and then are conveyed to a spinning box body through a metering pump for spinning.
Furthermore, the degradation rate of the nascent fiber can be reduced by introducing nitrogen in the step (3), the aperture of a spinneret plate in the spinning assembly in the step (3) is 0.22mm, the length-diameter ratio is 3.2, and the aperture size of the spun fiber can be replaced in time by using different spinning assemblies.
Further, the preheating temperature of the hot plate in the step (4) is 160 ℃, the primary fiber is stretched in a two-way mode on the hot plate, the tensile strength of the fiber is 60MPa, and the stretched fiber can be processed in different processing steps to prepare different filaments and staple fibers, so that the application range of the polylactic acid fiber is enlarged.
Further, two fans are located on two sides of the hot plate in the step (5), so that the heat dissipation speed of the fibers is improved, the shaping of the fibers is accelerated, and when the fibers are placed on the oil frame in the step (5), the fibers can be heated by using the hot plate, so that the secondary stretching of the fibers is facilitated.
Further, the spinning speed of the fiber in the step (5) is 1050m/min when the fiber is stretched on an oil frame, and the fiber is secondarily stretched and shaped on the premise of ensuring the fiber stretching amount, so that the whole shaping process of the polylactic acid fiber is completed.
Further, the fiber damaged and broken due to high temperature or tensile strength in the stretching process of the fiber is removed in the step (6), the fiber which is stretched and dyed uniformly is obtained, and the fiber is processed to have smooth surface and antistatic and ultraviolet resistant effects.
The method is suitable for the heat setting method of the high heat-resistant polylactic acid fiber with larger tensile strength.
The application has the advantages that:
the temperature and time of drying and heating the polylactic acid slices are controlled, so that the drying effect of the raw materials is improved; the polylactic acid fiber is subjected to secondary heating and stretching, so that the treatment and the shaping of the fiber are facilitated; the processed fiber has high heat resistance, ultraviolet resistance and antistatic performance, and is convenient for the use of the polylactic acid fiber.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A heat setting method of high heat-resistant polylactic acid fiber is characterized in that: the heat setting method of the high heat-resistant polylactic acid fiber comprises the following steps:
(1) preparing polylactic acid slices, namely preparing polylactic acid modified slices by taking polylactic acid master batches as raw materials and adding tourmaline with different contents, so that various properties of the modified polylactic acid slices are improved;
(2) drying the slices, namely conveying the polylactic acid slices to be used by a conveyor, concentrating the polylactic acid slices, and then performing vacuum drying treatment for many times, setting drying time and reducing the water content in the slices;
(3) melt spinning, introducing nitrogen, extruding polylactic acid slices through a screw extruder under the protection of nitrogen, and performing spinning through a spinning assembly to obtain the polylactic acid polylactic;
(4) high-temperature setting, winding the filamentized spinning at a certain speed, then stretching and heat-setting the nascent fiber on a preheated hot plate, and then preparing the fiber into filaments and staple fibers according to the product requirements;
(5) cooling, namely blowing air to the hot plate by adopting two fans to accelerate the cooling of the spun fibers, so as to avoid influence on next processing due to overhigh fiber temperature;
(6) and (3) fiber detection, namely winding the fiber to detect the quality of the finished product of the fiber, observing whether the fiber has a crack or not, reducing the defective rate of the finished product of the fiber, and packaging and storing the finished product.
2. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: uniformly soaking the raw materials in the step (1) in the mixed antistatic agent and the ultraviolet-resistant additive, fishing out, dyeing the raw materials in the step (1) by adopting a high-temperature high-pressure dyeing method at the dyeing temperature of 45-110 ℃, adding a leveling agent into a dye solution, keeping the pH value of the dye solution between 4 and 5, improving the dyeing fastness of the fiber, and gradually cooling to 70 ℃ after dyeing for washing and soap boiling.
3. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: in the step (2), the drying times are 3 times, the drying time is 4 hours, 8 hours and 12 hours respectively, and the drying temperature ranges from 60 ℃ to 100 ℃.
4. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: the time interval of the three drying times in the step (2) is 10 min.
5. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: after drying for three times in the step (2), reducing the water content in the polylactic acid slices to 30ppm, then carrying out melting treatment on the polylactic acid slices in the step (2) in the step (3), filtering the raw materials after the melting treatment by a filter, and then conveying the raw materials into a spinning box by a metering pump for spinning.
6. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: the degradation rate of the nascent fiber can be reduced by introducing nitrogen in the step (3), the aperture of a spinneret plate in the spinning assembly in the step (3) is 0.22mm, the length-diameter ratio is 3.2, and the aperture size of the spun fiber can be replaced in time by using different spinning assemblies.
7. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: the preheating temperature of the hot plate in the step (4) is 160 ℃, the stretching of the nascent fiber on the hot plate is bidirectional stretching, the range of the fiber tensile strength is 40-60MPa, the stretched fiber can be processed by different processing steps to prepare different filaments and staple fibers, and the application range of the polylactic acid fiber is enlarged.
8. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: and (3) in the step (5), the two fans are positioned on two sides of the hot plate, so that the heat dissipation speed of the fibers is improved, the shaping of the fibers is accelerated, and when the fibers are placed on the oil rack in the step (5), the fibers can be heated by utilizing the hot plate, so that the secondary stretching of the fibers is facilitated.
9. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: and (5) in the step (5), the spinning speed of the fiber stretched on an oil frame is 1050m/min, and the fiber is secondarily stretched and shaped on the premise of ensuring the fiber stretching amount, so that the whole shaping process of the polylactic acid fiber is completed.
10. The heat setting method of polylactic acid fiber with high heat resistance as claimed in claim 1, wherein: and (3) removing the damaged and broken fibers generated by high temperature or high tensile strength in the fiber drawing process in the step (6) to obtain drawn and dyed fibers, wherein the drawn and dyed fibers have smooth surfaces and antistatic and ultraviolet resistant effects after processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305117.0A CN113026129A (en) | 2021-03-23 | 2021-03-23 | Heat setting method of high-heat-resistance polylactic acid fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305117.0A CN113026129A (en) | 2021-03-23 | 2021-03-23 | Heat setting method of high-heat-resistance polylactic acid fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113026129A true CN113026129A (en) | 2021-06-25 |
Family
ID=76472741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110305117.0A Pending CN113026129A (en) | 2021-03-23 | 2021-03-23 | Heat setting method of high-heat-resistance polylactic acid fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113026129A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005200775A (en) * | 2004-01-13 | 2005-07-28 | Toray Ind Inc | Polylactic acid fiber structure and method for producing the same |
| CN101225555A (en) * | 2008-02-01 | 2008-07-23 | 吉林大学 | Melt-spinning hot-stretch forming preparation method of polyetheretherketone fibre |
| CN101240464A (en) * | 2007-02-05 | 2008-08-13 | 东丽纤维研究所（中国）有限公司 | Polylactic acid hydrolysis-resisting fibre and preparation method thereof |
| CN101736417A (en) * | 2009-11-25 | 2010-06-16 | 彭书成 | Preparation method of modified polyester fiber and modified polyester fiber prepared by same |
| CN101805941A (en) * | 2010-04-13 | 2010-08-18 | 东华大学 | Preparation method of polylactic acid fiber with high melting point |
| WO2012020335A2 (en) * | 2010-08-13 | 2012-02-16 | Kimberly-Clark Worldwide, Inc. | Modified polylactic acid fibers |
| CN102839443A (en) * | 2012-08-20 | 2012-12-26 | 太原理工大学 | Preparation method for heat-resisting polylactic acid fiber |
| CN104328516A (en) * | 2014-09-30 | 2015-02-04 | 北京中丽制机工程技术有限公司 | Method for producing melt spinning poly-lactic acid filaments |
| CN109023564A (en) * | 2018-09-14 | 2018-12-18 | 安徽丰原生物材料股份有限公司 | A kind of preparation method of polylactic acid coloured cut staple |
| CN109161973A (en) * | 2018-09-21 | 2019-01-08 | 浙江汇隆新材料股份有限公司 | The production technology of acid fiber by polylactic |
| CN110067032A (en) * | 2019-05-14 | 2019-07-30 | 苏州金泉新材料股份有限公司 | The preparation method of trilobal cross polylactic acid pattern fiber |
-
2021
- 2021-03-23 CN CN202110305117.0A patent/CN113026129A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005200775A (en) * | 2004-01-13 | 2005-07-28 | Toray Ind Inc | Polylactic acid fiber structure and method for producing the same |
| CN101240464A (en) * | 2007-02-05 | 2008-08-13 | 东丽纤维研究所（中国）有限公司 | Polylactic acid hydrolysis-resisting fibre and preparation method thereof |
| CN101225555A (en) * | 2008-02-01 | 2008-07-23 | 吉林大学 | Melt-spinning hot-stretch forming preparation method of polyetheretherketone fibre |
| CN101736417A (en) * | 2009-11-25 | 2010-06-16 | 彭书成 | Preparation method of modified polyester fiber and modified polyester fiber prepared by same |
| CN101805941A (en) * | 2010-04-13 | 2010-08-18 | 东华大学 | Preparation method of polylactic acid fiber with high melting point |
| WO2012020335A2 (en) * | 2010-08-13 | 2012-02-16 | Kimberly-Clark Worldwide, Inc. | Modified polylactic acid fibers |
| CN102839443A (en) * | 2012-08-20 | 2012-12-26 | 太原理工大学 | Preparation method for heat-resisting polylactic acid fiber |
| CN104328516A (en) * | 2014-09-30 | 2015-02-04 | 北京中丽制机工程技术有限公司 | Method for producing melt spinning poly-lactic acid filaments |
| CN109023564A (en) * | 2018-09-14 | 2018-12-18 | 安徽丰原生物材料股份有限公司 | A kind of preparation method of polylactic acid coloured cut staple |
| CN109161973A (en) * | 2018-09-21 | 2019-01-08 | 浙江汇隆新材料股份有限公司 | The production technology of acid fiber by polylactic |
| CN110067032A (en) * | 2019-05-14 | 2019-07-30 | 苏州金泉新材料股份有限公司 | The preparation method of trilobal cross polylactic acid pattern fiber |
Non-Patent Citations (4)
| Title |
|---|
| 刘吉平等: "《纺织科学中的纳米技术》", 31 May 2003, 中国纺织出版社 * |
| 姜怀等: "《汽车用纺织品的开发与应用》", 30 April 2009, 东华大学出版社 * |
| 张红鸣等: "《实用着色与配色技术》", 30 September 2001, 化学工业出版社 * |
| 沈新元: "《化学纤维手册》", 30 September 2008, 中国纺织出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104018239B (en) | Production method of antibacterial polyester industrial yarn | |
| CN106811818B (en) | A kind of high drawing abnormity 66 nylon fiber and its production method | |
| CN112831862B (en) | Tackifying spinning process for regenerating waste polyester | |
| CN102864511A (en) | Method for producing hollow colored terylene pre-oriented filament yarn through recyclable polyester bottle pieces | |
| CN108441974B (en) | A kind of production method of superhigh intensity 66 nylon fiber | |
| CN104278344A (en) | Production technology of semi-dull trilobal FDY polyester fiber | |
| CN113445142A (en) | Production method of cool feeling cable elastic fiber | |
| US20140106167A1 (en) | Method for hybrid dry-jet gel spinning and fiber produced by that method | |
| CN105887232A (en) | Method for preparing special black polyester short fiber for wire harness material | |
| CN103590140B (en) | A kind of imitative multiple polyisocyanate of linen look is combined short fibre and manufacture method thereof | |
| CN100432306C (en) | Method for preparing high-modulus super low shrinkage industrial yarn using pyromellitic dianhydride | |
| CN113026129A (en) | Heat setting method of high-heat-resistance polylactic acid fiber | |
| CN100552101C (en) | A kind of method of making high performance homogeneous viscose filament and products thereof | |
| CN109957849A (en) | A kind of bottle of piece regenerated terylene elasticity wig long filament | |
| CN103938285A (en) | Modified nylon-6 cool DTY filament production method | |
| CN108624968A (en) | A kind of preparation method of regenerated terylene composite antibacterial dacron long filament | |
| CN107299407A (en) | A kind of bottle of piece feed back spins the preparation method of antibacterial dacron long filament | |
| CN101130901A (en) | Method for producing two/three-dimensional spatial fibre using reprocessed plastic | |
| CN103741241B (en) | The slice spinning processing technology of coloured FDY strong fiber | |
| CN104831375A (en) | Dull polyester FDY (fully drawn yarn) slub filament yarn and production method thereof | |
| CN106544741A (en) | A kind of method for improving superhigh molecular weight polyethylene fibers performance | |
| US20230349078A1 (en) | Skin-friendly fish scale protein modified nylon-spandex fabric and its processing technology | |
| CN109208118B (en) | Production method for producing disposable hanging rope by using soybean fibers | |
| CN109023568B (en) | A mixing extrusion device for modified biomass fiber production | |
| KR100782633B1 (en) | Process of producing polyamide middle-shrinkage filaments |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210625 |
|
| RJ01 | Rejection of invention patent application after publication |