阅读说明：本技术 一种高中空聚酯长丝纤维及其制备方法 (High-hollowness polyester filament fiber and preparation method thereof ) 是由 张庆喜 詹欣怡 解骢浩 金海霞 裴欢欢 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种高中空聚酯长丝纤维及其制备方法,通过将聚酯纤维切片、红外线发射剂、载银磷灰石粉体、改性竹炭粉体和亚磷酸酯通入双螺杆挤压机进行加热熔融,制得熔融原料；将熔融原料计量后经喷丝板挤出,形成原生聚酯纤维,聚酯纤维经环吹风冷却；将冷却后的聚酯纤维集束上油,牵伸、热定型和卷绕制得高中空聚酯长丝纤维,其中载银磷灰石粉体自身具有良好的抗菌性能,并配合红外线发射剂,制成纤维使其具有更好的抑菌和保健的双重功能,并且随着改性竹炭粉体的加入能够利用炭材料本身的广谱抗菌和氨基化合物的专属抗菌,有效提升聚酯长丝纤维的抑菌和抗菌性能。(The invention discloses a high-hollow polyester filament fiber and a preparation method thereof, wherein polyester fiber slices, an infrared ray emitting agent, silver-loaded apatite powder, modified bamboo charcoal powder and phosphite ester are fed into a double-screw extruder to be heated and melted to prepare a melting raw material; metering the molten raw materials, extruding the molten raw materials through a spinneret plate to form primary polyester fibers, and cooling the polyester fibers by circular blowing; the cooled polyester fiber is subjected to cluster oiling, drafting, heat setting and winding to prepare the high-hollow polyester filament fiber, wherein the silver-loaded apatite powder has good antibacterial performance and is matched with an infrared emitting agent to prepare the fiber, so that the fiber has double functions of better bacteriostasis and health care, and the antibacterial performance of the polyester filament fiber can be effectively improved by utilizing the broad-spectrum antibiosis of the carbon material and the exclusive antibiosis of an amino compound along with the addition of the modified bamboo charcoal powder.)

1. The high-hollow polyester filament fiber is characterized by comprising the following raw materials in parts by mass:

80-100 parts of polyester fiber slices, 10-20 parts of infrared emission agent, 15-25 parts of silver-loaded apatite powder, 15-25 parts of modified bamboo charcoal powder and 6-10 parts of phosphite ester.

2. The high hollow polyester filament fiber according to claim 1, wherein the preparation method of the high hollow polyester filament fiber comprises the following steps:

feeding polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder and phosphite ester in parts by mass into a double-screw extruder for heating and melting to prepare a molten raw material;

metering the molten raw materials, extruding the molten raw materials through a spinneret plate to form primary polyester fibers, and cooling the polyester fibers by circular blowing;

and bundling and oiling the cooled polyester fibers, drafting, heat setting and winding to obtain the high-hollow polyester filament fibers.

3. The method for preparing the high-hollow polyester filament fiber according to claim 2, wherein in the step of heating and melting the polyester fiber slices, the infrared ray emission agent, the silver-loaded apatite powder, the modified bamboo charcoal powder and the phosphite ester in parts by mass in a double-screw extruder to prepare a melting raw material:

the preparation process of the modified bamboo charcoal powder comprises the following steps: bamboo charcoal powder with the average particle size of 60-80 nm is used as a raw material, and activation is carried out in an electromagnetic field with the frequency of 10000-40000 Hz for 50-60 min, so as to obtain the modified bamboo charcoal powder.

4. The method for preparing the high-hollow polyester filament fiber according to claim 2, wherein in the step of heating and melting the polyester fiber slices, the infrared ray emission agent, the silver-loaded apatite powder, the modified bamboo charcoal powder and the phosphite ester in parts by mass in a double-screw extruder to prepare a melting raw material:

the number of times of heating and melting by using a double-screw extruder is three, the first melting temperature is 180-200 ℃, the second melting temperature is 220-260 ℃, and the third melting temperature is 280-300 ℃.

5. The method for preparing a high-hollow polyester filament fiber according to claim 2, wherein the step of extruding the molten raw material through a spinneret after metering the molten raw material to form a raw polyester fiber, and the step of cooling the polyester fiber by circular blowing:

the spinneret orifice of the spinneret plate is composed of eight sections of same concentric circular arc narrow slits which are uniformly distributed on the circumference, 20-40 holes of the single ring are uniformly distributed and arranged, and the roughness of the hole wall of each circular arc narrow slit is Rz0.8.

6. The method for preparing a high-hollow polyester filament fiber according to claim 5, wherein the step of extruding the molten raw material through a spinneret after metering the molten raw material to form a raw polyester fiber, and the step of cooling the polyester fiber by circular blowing:

the air pressure of circular air blowing in the cooling process is 60-80 Pa, the air temperature is 30-40 ℃, the rheumatism is 60-80%, and the air speed of the circular air blowing is 0.6-0.8 m/min.

7. The method for preparing high hollow polyester filament fiber according to claim 6, wherein in the step of preparing the high hollow polyester filament fiber by collecting and oiling the cooled polyester fiber, drawing, heat-setting and winding:

and (4) bundling and oiling by using an oil nozzle or an oil roller, wherein the oiling frequency is 1-3.

8. The method for preparing high hollow polyester filament fiber according to claim 7, wherein in the step of preparing the high hollow polyester filament fiber by collecting and oiling the cooled polyester fiber, drawing, heat-setting and winding:

the drafting multiple is 2.5-3.5 times, and the drafting temperature is 170-180 ℃.

9. The method for preparing high hollow polyester filament fiber according to claim 8, wherein in the step of preparing the high hollow polyester filament fiber by collecting and oiling the cooled polyester fiber, drawing, heat-setting and winding:

the heat setting temperature is 150-160 ℃, and the winding speed is 5000-6000 m/min.

Technical Field

The invention relates to the technical field of polyester spinning, in particular to a high-hollow polyester filament fiber and a preparation method thereof.

Background

With the rapid development of market economy and the continuous improvement of living standard of people, people have more and more attention to comfort and health besides the functions of keeping warm and beautifying clothes. Therefore, the polyester filament fiber with high hollowness and good antibacterial property is produced, so that the requirements of people on high-grade clothing fabrics, decorative materials and auxiliary materials and special clothing fabrics are met to a certain extent, and the problem to be solved by the market is urgent.

Disclosure of Invention

The invention aims to provide a high-hollowness polyester filament fiber with high hollowness and good antibacterial property and a preparation method thereof.

In order to achieve the purpose, the high-hollow polyester filament fiber adopted by the invention comprises the following raw materials in parts by mass:

80-100 parts of polyester fiber slices, 10-20 parts of infrared emission agent, 15-25 parts of silver-loaded apatite powder, 15-25 parts of modified bamboo charcoal powder and 6-10 parts of phosphite ester.

The invention also provides a preparation method of the high-hollow polyester filament fiber, which comprises the following steps:

feeding polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder and phosphite ester in parts by mass into a double-screw extruder for heating and melting to prepare a molten raw material;

metering the molten raw materials, extruding the molten raw materials through a spinneret plate to form primary polyester fibers, and cooling the polyester fibers by circular blowing;

and bundling and oiling the cooled polyester fibers, drafting, heat setting and winding to obtain the high-hollow polyester filament fibers.

Wherein, in the step of introducing polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder and phosphite ester in parts by mass into a double-screw extruder for heating and melting to prepare a melting raw material:

the preparation process of the modified bamboo charcoal powder comprises the following steps: bamboo charcoal powder with the average particle size of 60-80 nm is used as a raw material, and activation is carried out in an electromagnetic field with the frequency of 10000-40000 Hz for 50-60 min, so as to obtain the modified bamboo charcoal powder.

Wherein, in the step of introducing polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder and phosphite ester in parts by mass into a double-screw extruder for heating and melting to prepare a melting raw material:

the number of times of heating and melting by using a double-screw extruder is three, the first melting temperature is 180-200 ℃, the second melting temperature is 220-260 ℃, and the third melting temperature is 280-300 ℃.

Wherein, after the molten raw materials are measured, the molten raw materials are extruded by a spinneret plate to form primary polyester fibers, and the polyester fibers are cooled by circular blowing:

the spinneret orifice of the spinneret plate is composed of eight sections of same concentric circular arc narrow slits which are uniformly distributed on the circumference, 20-40 holes of the single ring are uniformly distributed and arranged, and the roughness of the hole wall of each circular arc narrow slit is Rz0.8.

Wherein, after the molten raw materials are measured, the molten raw materials are extruded by a spinneret plate to form primary polyester fibers, and the polyester fibers are cooled by circular blowing:

the air pressure of circular air blowing in the cooling process is 60-80 Pa, the air temperature is 30-40 ℃, the rheumatism is 60-80%, and the air speed of the circular air blowing is 0.6-0.8 m/min.

Wherein, in the steps of bundling and oiling the cooled polyester fiber, drafting, heat setting and winding to prepare the high hollow polyester filament fiber:

and (4) bundling and oiling by using an oil nozzle or an oil roller, wherein the oiling frequency is 1-3.

Wherein, in the steps of bundling and oiling the cooled polyester fiber, drafting, heat setting and winding to prepare the high hollow polyester filament fiber:

the drafting multiple is 2.5-3.5 times, and the drafting temperature is 170-180 ℃.

Wherein, in the steps of bundling and oiling the cooled polyester fiber, drafting, heat setting and winding to prepare the high hollow polyester filament fiber:

the heat setting temperature is 150-160 ℃, and the winding speed is 5000-6000 m/min.

The invention has the beneficial effects that: polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder and phosphite ester are fed into a double-screw extruder to be heated and melted to prepare a melting raw material; metering the molten raw materials, extruding the molten raw materials through a spinneret plate to form primary polyester fibers, and cooling the polyester fibers by circular blowing; the cooled polyester fiber is subjected to cluster oiling, drafting, heat setting and winding to prepare the high-hollow polyester filament fiber, wherein the silver-loaded apatite powder has good antibacterial performance and is matched with an infrared emitting agent to prepare the fiber, so that the fiber has double functions of better bacteriostasis and health care, and the antibacterial performance of the polyester filament fiber can be effectively improved by utilizing the broad-spectrum antibiosis of the carbon material and the exclusive antibiosis of an amino compound along with the addition of the modified bamboo charcoal powder.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart of the steps of example 1 of the present invention.

Fig. 2 is a flowchart of the steps of embodiment 2 of the present invention.

Fig. 3 is a flowchart of the steps of embodiment 3 of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The high-hollow polyester filament fiber comprises the following raw materials in parts by mass: 80-100 parts of polyester fiber slices, 10-20 parts of infrared emission agent, 15-25 parts of silver-loaded apatite powder, 15-25 parts of modified bamboo charcoal powder, 6-10 parts of phosphite ester and 5-10 parts of copper-zinc oxide composite antibacterial agent, wherein the copper-zinc oxide composite antibacterial agent is introduced into a double-screw extruder together with the polyester fiber slices, the infrared emission agent, the silver-loaded apatite powder, the modified bamboo charcoal powder and the phosphite ester for heating and melting to prepare a molten raw material; the method comprises the following steps of (1) extruding a molten raw material after metering through a spinneret plate to form primary polyester fiber, and cooling the polyester fiber through circular blowing: the molten raw material is filtered three times by using a screen with sequentially reduced pore diameters.

Referring to fig. 1, in example 1, the present invention provides a high hollow polyester filament fiber and a method for preparing the same, including the following steps:

s100: feeding 80 parts of polyester fiber slices, 10 parts of infrared emission agent, 15 parts of silver-loaded apatite powder, 15 parts of modified bamboo charcoal powder, 6 parts of phosphite ester and 5 parts of copper-zinc oxide composite antibacterial agent into a double-screw extruder to carry out three times of heating and melting at the melting temperature of 180 ℃, 220 ℃ and 280 ℃ to obtain a molten raw material;

s200: carrying out three-time filtration on the molten raw materials by utilizing a screen with sequentially reduced aperture;

s300: metering the filtered molten raw materials, and extruding the molten raw materials through a spinneret plate to form primary polyester fibers, wherein the polyester fibers are cooled by circular blowing with the wind pressure of 60Pa, the wind temperature of 30 ℃, the wind speed of 60 percent and the wind speed of 0.6 m/min;

s400: and (3) carrying out 1-time spraying, bundling and oiling on the cooled polyester fiber by using an oil nozzle, wherein the temperature is 170 ℃, the multiple is 2.5 times of drafting, the temperature is 150 ℃, and the high hollow polyester filament fiber is prepared by heat setting and winding at the winding speed of 5000 m/min.

In the embodiment, polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder, phosphite ester and a copper-zinc oxide composite antibacterial agent are fed into a double-screw extruder to be heated and melted for three times to prepare a melting raw material; the silver-loaded apatite powder has good antibacterial performance and is matched with an infrared emission agent to prepare fiber, so that the fiber has double functions of better bacteriostasis and health care, and the antibacterial and antibacterial performance of the polyester filament fiber can be effectively improved by utilizing the broad-spectrum antibiosis of the carbon material and the exclusive antibiosis of an amino compound along with the addition of the modified bamboo charcoal powder, wherein the modified bamboo charcoal powder takes bamboo charcoal powder with the average particle size of 60nm as a raw material, is activated by an electromagnetic field with the frequency of 10000Hz for 50min, and the modified bamboo charcoal powder is obtained; the addition of the copper-zinc oxide composite antibacterial agent can enable the prepared high-hollow polyester filament fiber to have a good antibacterial effect on escherichia coli and staphylococcus aureus, and the addition of the phosphite ester can achieve a good antioxidant effect on the prepared high-hollow polyester filament fiber, so that the color and luster can be effectively protected. The molten raw materials are filtered for three times by utilizing the screen meshes with the sequentially reduced pore diameters, so that larger particles in the molten raw materials can be filtered, the quality of the high-hollow polyester filament fibers prepared from the molten raw materials is more uniform and finer, and the prepared fabric is more comfortable and skin-friendly. The filtered molten raw materials are metered and then extruded through a spinneret plate to form primary polyester fibers, wherein spinneret holes of the spinneret plate are formed by eight sections of identical and concentric circular arc narrow slits which are uniformly distributed and arranged on the circumference, 20 holes of a single ring are adopted and uniformly distributed, the hole wall roughness of the circular arc narrow slits is Rz0.8, the polyester fibers are cooled by circular blowing with the wind pressure of 60Pa, the wind temperature of 30 ℃, the wind speed of 60 percent and the wind speed of 0.6m/min, then the cooled polyester fibers are sprayed, bundled and oiled for 1 time by an oil nozzle, the temperature is 170 ℃, the multiple is 2.5 times of drafting, the temperature is 150 ℃, and the heat setting and the winding speed are 5000m/min to prepare the high-hollow polyester filament fibers, and the high-hollow polyester filament fibers have good high hollowness.

Referring to fig. 2, in example 2, the present invention provides a high hollow polyester filament fiber and a method for preparing the same, including the following steps:

s100: feeding 100 parts of polyester fiber slices, 20 parts of infrared emission agent, 25 parts of silver-loaded apatite powder, 25 parts of modified bamboo charcoal powder, 10 parts of phosphite ester and 10 parts of copper-zinc oxide composite antibacterial agent into a double-screw extruder to carry out three times of heating and melting at the melting temperature of 200 ℃, 260 ℃ and 300 ℃ to obtain a molten raw material;

s200: carrying out three-time filtration on the molten raw materials by utilizing a screen with sequentially reduced aperture;

s300: metering the filtered molten raw materials, and extruding the molten raw materials through a spinneret plate to form primary polyester fibers, wherein the polyester fibers are cooled by circular blowing with the wind pressure of 80Pa, the wind temperature of 40 ℃, the wind speed of 80 percent and the wind speed of 0.8 m/min;

s400: and (3) spraying, bundling and oiling the cooled polyester fiber for 3 times by using an oil nozzle, performing drafting at the temperature of 180 ℃ and the multiple of 3.5 times, performing heat setting at the temperature of 160 ℃ and winding at the winding speed of 6000m/min to obtain the high-hollow polyester filament fiber.

In the embodiment, polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder, phosphite ester and a copper-zinc oxide composite antibacterial agent are fed into a double-screw extruder to be heated and melted for three times to prepare a melting raw material; the silver-loaded apatite powder has good antibacterial performance and is matched with an infrared emission agent to prepare fiber, so that the fiber has double functions of better bacteriostasis and health care, and the antibacterial and antibacterial performance of the polyester filament fiber can be effectively improved by utilizing the broad-spectrum antibiosis of the carbon material and the exclusive antibiosis of an amino compound along with the addition of the modified bamboo charcoal powder, wherein the modified bamboo charcoal powder takes bamboo charcoal powder with the average particle size of 80nm as a raw material, and is activated by an electromagnetic field with the frequency of 40000Hz for 60min to obtain the modified bamboo charcoal powder; the addition of the copper-zinc oxide composite antibacterial agent can enable the prepared high-hollow polyester filament fiber to have a good antibacterial effect on escherichia coli and staphylococcus aureus, and the addition of the phosphite ester can achieve a good antioxidant effect on the prepared high-hollow polyester filament fiber, so that the color and luster can be effectively protected. The molten raw materials are filtered for three times by utilizing the screen meshes with the sequentially reduced pore diameters, so that larger particles in the molten raw materials can be filtered, the quality of the high-hollow polyester filament fibers prepared from the molten raw materials is more uniform and finer, and the prepared fabric is more comfortable and skin-friendly. The filtered molten raw materials are metered and then extruded through a spinneret plate to form primary polyester fibers, wherein spinneret holes of the spinneret plate are formed by eight sections of identical and concentric circular arc narrow slits which are uniformly distributed and arranged on the circumference, single rings of 40 holes are adopted and uniformly distributed, the hole wall roughness of the circular arc narrow slits is Rz0.8, the polyester fibers are cooled by circular blowing with the wind pressure of 80Pa, the wind temperature of 40 ℃, the wind speed of 80% and the wind speed of 0.8m/min, then the cooled polyester fibers are sprayed, bundled and oiled for 3 times by an oil nozzle, the temperature is 180 ℃, the multiple is 3.5 times of drafting, the temperature is 160 ℃, and the heat setting and the winding speed are 6000m/min to prepare the high-hollow polyester filament fibers, and the high-hollow polyester filament fibers have good high hollowness.

Referring to fig. 3, in example 3, the present invention provides a high hollow polyester filament fiber and a method for preparing the same, including the following steps:

s100: feeding 90 parts of polyester fiber slices, 15 parts of infrared emission agent, 20 parts of silver-loaded apatite powder, 20 parts of modified bamboo charcoal powder, 8 parts of phosphite ester and 7.5 parts of copper-zinc oxide composite antibacterial agent into a double-screw extruder to carry out three times of heating and melting at the melting temperature of 190 ℃, 240 ℃ and 290 ℃ to obtain a molten raw material;

s200: carrying out three-time filtration on the molten raw materials by utilizing a screen with sequentially reduced aperture;

s300: metering the filtered molten raw materials, and extruding the molten raw materials through a spinneret plate to form primary polyester fibers, wherein the polyester fibers are cooled by circular blowing with the wind pressure of 70Pa, the wind temperature of 35 ℃, the wind speed of 70% and the wind speed of 0.7 m/min;

s400: and (3) spraying, bundling and oiling the cooled polyester fiber for 2 times by using an oil nozzle, drawing at the temperature of 175 ℃ by a multiple of 3 times, performing heat setting at the temperature of 155 ℃, and winding at the winding speed of 5500m/min to obtain the high hollow polyester filament fiber.

In the embodiment, polyester fiber slices, an infrared emission agent, silver-loaded apatite powder, modified bamboo charcoal powder, phosphite ester and a copper-zinc oxide composite antibacterial agent are fed into a double-screw extruder to be heated and melted for three times to prepare a melting raw material; the silver-loaded apatite powder has good antibacterial performance and is matched with an infrared emission agent to prepare fiber, so that the fiber has double functions of better bacteriostasis and health care, and the antibacterial and antibacterial performance of the polyester filament fiber can be effectively improved by utilizing the broad-spectrum antibiosis of a carbon material and the exclusive antibiosis of an amino compound along with the addition of the modified bamboo charcoal powder, wherein the modified bamboo charcoal powder takes bamboo charcoal powder with the average particle size of 70nm as a raw material, is activated by an electromagnetic field with the frequency of 20000Hz for 55min, and the modified bamboo charcoal powder is obtained; the addition of the copper-zinc oxide composite antibacterial agent can enable the prepared high-hollow polyester filament fiber to have a good antibacterial effect on escherichia coli and staphylococcus aureus, and the addition of the phosphite ester can achieve a good antioxidant effect on the prepared high-hollow polyester filament fiber, so that the color and luster can be effectively protected. The molten raw materials are filtered for three times by utilizing the screen meshes with the sequentially reduced pore diameters, so that larger particles in the molten raw materials can be filtered, the quality of the high-hollow polyester filament fibers prepared from the molten raw materials is more uniform and finer, and the prepared fabric is more comfortable and skin-friendly. The filtered molten raw materials are metered and then extruded through a spinneret plate to form primary polyester fibers, wherein spinneret holes of the spinneret plate are formed by eight sections of identical and concentric circular arc narrow slits which are uniformly distributed and arranged on the circumference, a single ring is adopted, 30 holes are uniformly distributed and arranged, the hole wall roughness of the circular arc narrow slits is Rz0.8, the polyester fibers are cooled by circular blowing with the wind pressure of 70Pa, the wind temperature of 35 ℃, the wind humidity of 70% and the wind speed of 0.7m/min, then the cooled polyester fibers are sprayed, bundled and oiled for 2 times by an oil nozzle, the temperature is 175 ℃, the multiple is 3 times of drafting, the temperature is 155 ℃, the heat setting is carried out, and the winding speed is 5500m/min, so that the high-hollow polyester filament fibers are prepared.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.