CN113832568A - Production process for improving comfort level of polyester fiber - Google Patents

Abstract

The invention provides a production process for improving the comfort level of polyester fibers, which comprises the steps of preparing polyether ester master batches, preparing modified slice master batches and carrying out melt spinning. The hard chain forging of the polyether ester contains a rigid benzene ring structure so that the material has certain strength, while the soft chain forging of the polyether ester contains soft ether bonds so that the material has excellent softness and higher elongation at break, and after being blended with the polyester fiber, the problem of poor compatibility of the blend can be solved, and the flexibility of the prepared fiber can be greatly improved. The modified fiber extrudes the hollow fiber through the hollow spinneret plate, the hollow shape increases the surface area, overcomes the defect of pilling of the round fiber, and enhances the covering capacity, thereby reducing the transparency of the fabric, having light weight, being beneficial to moisture absorption and sweat discharge, and improving the cohesive force, bulkiness and air permeability among the tows due to the special shape.

Description

Production process for improving comfort level of polyester fiber

Technical Field

The invention relates to the technical field of polyester fibers, in particular to a production process for improving the comfort level of polyester fibers.

Background

The polyester fiber is an important variety in synthetic fiber, and is fiber fabric prepared from pure terephthalic acid or dimethyl terephthalate and ethylene glycol as raw materials through esterification or ester exchange and polycondensation to prepare fiber-forming high polymer, and then through spinning and post-treatment. Polyester fibers have good elasticity, stable chemical properties, wear resistance, corrosion resistance, easy washing and quick drying, and have the performances of silk luster, excellent breaking strength, light resistance, heat resistance and the like, so the polyester fibers are widely applied to industries such as clothing manufacture, building interior decoration, vehicle interior decoration and the like. However, polyester fibers simultaneously have no hydrophilic groups, are poor in moisture absorption and poor in air permeability and moisture permeability, and static electricity generated by fabric friction cannot be eliminated in time, so that the comfortableness of polyester fibers is poor.

Chinese patent publication No. CN108035009B, a winter heat and moisture comfortable polyester fiber FDY yarn and a preparation method thereof, the preparation method comprises the following steps: the spinning melt is subjected to metering, composite spinneret plate extrusion, cooling, oiling, stretching, heat setting and winding to prepare the hot and wet comfortable polyester fiber FDY yarn for winter, the material is polyester dispersed with a matt agent, the thermal resistance of the prepared woven fabric is more than or equal to 0.18m2℃/W, the wet resistance of the woven fabric is less than or equal to 14 Pa.m 2/W, the composite spinneret plate is simultaneously provided with a cross-shaped spinneret orifice and a double-cross-shaped spinneret orifice, the length ratio of the cross-shaped spinneret orifice to the double-cross-shaped spinneret orifice is equal to the product of the equivalent diameter ratio and a coefficient K, the value range of the coefficient K is 0.97-1.03, and an oiling agent contains crown ether, and the content of the crown ether is 67.30-85.58 wt%. The preparation method is simple, and the obtained polyester fiber FDY has excellent heat-humidity comfort performance and considerable application prospect.

Chinese patent publication No. CN102409429B, a method for preparing a high-comfort composite-function polyester fiber, which comprises a primary esterification reaction section, a secondary esterification reaction section, a polymerization reaction process and a spinning process, wherein aliphatic dicarboxylic acid and/or non-para-aryl dicarboxylic acid is introduced into the primary esterification reaction section as a third monomer; flexible polyethylene glycol is introduced into the secondary esterification reaction section as a fourth monomer; after the esterification is finished, adding hindered amine light stabilizer and hindered phenol antioxidant which are respectively blended by using acetic acid and ethylene glycol as solvents and hydroxy silicone oil; after the prepolymerization of the polymerization reaction process is finished and before the final polymerization, the ultraviolet absorbent and the antistatic agent are added. Before the spinning process, the polyester chips are pre-crystallized and dried, and melt-spun into fibers with special-shaped cross sections such as three leaves, cross leaves, five leaves and the like, so that the obtained polyester fibers have excellent ultraviolet resistance, antistatic property, ageing resistance, pilling resistance, moisture absorption and quick drying performance, and the fabric has high comfort.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a production process for improving the comfort level of polyester fiber, so as to solve the problems in the background technology.

The technical problem solved by the invention is realized by adopting the following technical scheme: a production process for improving the comfort of polyester fibers comprises the following steps:

step one, preparing polyether ester master batch:

placing the reaction container in an oven for drying, vacuumizing to room temperature, adding a proper amount of ammonium dichloride, caprolactone, propylene oxide and a catalyst, adding a proper amount of a toluene solution, sealing the reaction bottle, placing the reaction bottle in a constant-temperature oil bath for stirring and reacting, after the reaction is stopped, dissolving a mixture obtained by the reaction with dichloromethane, adding the mixture into a normal hexane solution, violently stirring to separate out a polymer, filtering, and drying to obtain a polyether ester copolymer;

putting the polyether ester copolymer into a vacuum oven for drying for 12 hours, and then adding the polyether ester copolymer into a double-screw extruder for slicing to obtain polyether ester master batches;

step two, preparing modified slice master batch:

firstly, placing the polyester chips and the polyether ester master batches in a blast oven for drying to remove surface moisture, and then placing the polyester chips and the polyether ester master batches in a vacuum oven for vacuum drying; after drying, uniformly stirring and mixing the polyester slices and the polyether ester master batches through a mixer, adding the mixed polyester slices and polyether ester master batches into a granulator, and extruding and granulating to obtain modified slice master batches;

step three, melt spinning:

drying the modified slice master batch and the polyester slice in a blast oven at 100 ℃ for 3h, then drying in a vacuum oven at 106 ℃ for 24h in vacuum, then respectively adding the modified slice master batch and the polyester slice into a double-screw extruder for processing, extruding the modified slice master batch and the polyester slice by screws, then feeding the extruded modified slice master batch and the extruded polyester slice into a spinning assembly in a spinning box body, adjusting the flow of a melt discharged from the spinning assembly by a metering pump, forming the melt into uniform filaments by a heterosexual spinneret plate, and cooling, oiling, stretching, shaping and winding the uniform filaments by side blast to obtain the modified filaments.

As a preferable scheme of the invention: the caprolactone and the propylene oxide need to be distilled out through calcium hydride reflux under the protection of nitrogen before use.

As a preferable scheme of the invention: the ammonium dichloride needs to be recrystallized by ether solution before use, and then purified and dried.

As a preferable scheme of the invention: the catalyst is one of trimethyl aluminum, stannous octoate and stannous chloride.

As a preferable scheme of the invention: drying for 3 hours in the blast oven in the second step at the temperature of 80-100 ℃; and (3) drying for 12 hours in a vacuum oven at the temperature of 100-110 ℃.

As a preferable scheme of the invention: and the content of the polyether ester master batch in the modified slice master batch in the step two is 10-30 wt%.

As a preferable scheme of the invention: the opposite spinneret plate in the third step is a hollow spinneret plate, and hollow fibers are extruded by the hollow spinneret plate.

As a preferable scheme of the invention: the temperature of the spinning manifold in the third step is 280-300 ℃; the temperature of the cross air is 20-25 ℃, the air speed is 0.3-0.5 m/s, and the relative humidity is 60% -75%; the winding speed is 2000-2500 m/min.

As a preferable scheme of the invention: the content of the polyether ester master batch in the modified fiber in the third step is 2-6 wt%.

A fabric is made of modified fiber yarns, the modified fiber yarns are spun into threads through a spinning machine and are woven into cloth through the spinning machine, the spinning machine comprises a base, a yarn winding device and a yarn bobbin, the yarn winding device is arranged on the base and used for winding yarns, the yarn bobbin is arranged on one side, away from the yarn winding device, of the base and used for winding yarns, the yarn winding device comprises a winding disc and a plurality of groups of rotating discs, the rotating discs are annularly distributed on the winding disc, the rotating discs are used for mounting the fiber bobbins, one sides, located on the rotating discs, of the winding disc are provided with yarn guide rods and used for guiding out the fiber yarns of the fiber bobbins, a hollow shaft is arranged in the middle of the winding disc, the hollow shaft is rotatably mounted on a support and is driven by a driving device to rotate on the support, the winding bobbin is fixedly mounted in the hollow shaft, and the winding bobbin is used for collecting the plurality of groups of fiber yarns;

the winding disc is embedded with a bearing corresponding to the rotating disc, the rotating disc is embedded into the bearing and is rotatably arranged on the winding disc, one side of the rotating disc is provided with an air expansion shaft for mounting a fiber tube, the other end of the rotating disc is provided with a rotating shaft, the rotating shaft penetrates through the winding disc and is in transmission connection with driven gears, transition gears are arranged among the driven gears, and mutual synchronous transmission among all groups of driven gears is realized through the transition gears;

the driving device comprises a driving motor and a driving gear arranged on an output shaft of the driving motor, and the driving gear is in meshed transmission connection with the rotating rack so as to drive the hollow shaft to rotate;

the yarn barrel is arranged on the support and is controlled to rotate through the servo motor, and the yarn barrel is used for collecting wound yarns.

Compared with the prior art, the invention has the beneficial effects that: the hard chain forging of the polyether ester contains a rigid benzene ring structure so that the material has certain strength, while the soft chain forging of the polyether ester contains soft ether bonds so that the material has excellent softness and higher elongation at break, and after being blended with the polyester fiber, the problem of poor compatibility of the blend can be solved, and the flexibility of the prepared fiber can be greatly improved. The modified fiber extrudes the hollow fiber through the hollow spinneret plate, the hollow shape increases the surface area, overcomes the defect of pilling of the round fiber, and enhances the covering capacity, thereby reducing the transparency of the fabric, having light weight, being beneficial to moisture absorption and sweat discharge, and improving the cohesive force, bulkiness and air permeability among the tows due to the special shape.

Drawings

FIG. 1 is a schematic view of the structure of a spinning machine according to the present invention;

FIG. 2 is a schematic front view of a winding disc according to the present invention;

FIG. 3 is a schematic view of the back side of the winding disc of the present invention;

the following are marked in the figure: 1. a base; 2. a yarn bobbin; 3. a winding disc; 4. rotating the disc; 5. a fiber yarn package; 6. a thread guide rod; 7. a hollow shaft; 8. a support; 9. a winding drum; 10. an air expansion shaft; 11. a driven gear; 12. a transition gear; 13. rotating the rack; 14. a drive motor; 15. a drive gear.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining the specific drawings.

Example 1

A production process for improving the comfort of polyester fibers comprises the following steps:

preparing polyether ester master batch:

placing the reaction container in an oven for drying, vacuumizing to room temperature, adding a proper amount of ammonium dichloride, caprolactone, propylene oxide and a catalyst, adding a proper amount of a toluene solution, sealing the reaction bottle, placing the reaction bottle in a constant-temperature oil bath for stirring and reacting, after the reaction is stopped, dissolving a mixture obtained by the reaction with dichloromethane, adding the mixture into a normal hexane solution, violently stirring to separate out a polymer, filtering, and drying to obtain a polyether ester copolymer;

putting the polyether ester copolymer into a vacuum oven for drying for 12 hours, and then adding the polyether ester copolymer into a double-screw extruder for slicing to obtain polyether ester master batches;

the caprolactone and the propylene oxide need to be distilled out through calcium hydride reflux under the protection of nitrogen before use.

The ammonium dichloride needs to be recrystallized by ether solution before use, and then purified and dried.

The catalyst is one of trimethyl aluminum, stannous octoate and stannous chloride.

Preparing modified sliced master batch:

firstly, placing the polyester chips and the polyether ester master batches in a blast oven for drying to remove surface moisture, and then placing the polyester chips and the polyether ester master batches in a vacuum oven for vacuum drying; after drying, uniformly stirring and mixing the polyester chips and the polyether ester master batches through a mixer, adding the mixed polyester chips and polyether ester master batches into a granulator, and extruding and granulating to obtain the modified chip master batches.

Drying for 3 hours in the blast oven at the temperature of 80-100 ℃; and (3) drying for 12 hours in a vacuum oven at the temperature of 100-110 ℃.

The content of the polyether ester master batch in the modified slice master batch is 10 wt%.

Melt spinning:

drying the modified slice master batch and the polyester slice in a blast oven at 100 ℃ for 3h, then drying in a vacuum oven at 106 ℃ for 24h in vacuum, then respectively adding the modified slice master batch and the polyester slice into a double-screw extruder for processing, extruding the modified slice master batch and the polyester slice by screws, then feeding the extruded modified slice master batch and the extruded polyester slice into a spinning assembly in a spinning box body, adjusting the flow of a melt discharged from the spinning assembly by a metering pump, forming the melt into uniform filaments by a heterosexual spinneret plate, and cooling, oiling, stretching, shaping and winding the uniform filaments by side blast to obtain the modified filaments.

The opposite-shaped spinneret plate is a hollow spinneret plate, and hollow fibers are extruded by the hollow spinneret plate.

The temperature of the spinning manifold is 280-300 ℃; the temperature of the cross air is 20-25 ℃, the air speed is 0.3-0.5 m/s, and the relative humidity is 60% -75%; the winding speed is 2000-2500 m/min.

The content of the polyether ester master batch in the modified fiber is 2 wt%.

A fabric is made of modified fiber yarns, the modified fiber yarns are spun into threads by a spinning machine, and is woven into cloth by a spinning machine, the spinning machine comprises a base 1, a silk winding device arranged on the base 1 for winding, and a yarn bobbin 2 arranged on one side of the base 1 far away from the silk winding device for winding yarn, the silk winding device comprises a winding disc 3 and a plurality of groups of rotating discs 4 annularly distributed on the winding disc 3, the rotating discs 4 are used for mounting a fiber silk tube 5, one side of the winding disc 3, which is positioned on the rotating discs 4, is provided with a silk guide rod 6, used for guiding out the fiber yarns of the fiber yarn barrel 5, a hollow shaft 7 is arranged in the middle of the winding disc 3, the hollow shaft 7 is rotatably arranged on a support 8, the hollow shaft 7 is driven to rotate on the support 8 through a driving device, a winding cylinder 9 is fixedly installed in the hollow shaft 7, and the winding cylinder 9 is used for collecting a plurality of groups of fiber yarns;

a bearing is embedded in the winding disc 3 corresponding to the rotating disc 4, the rotating disc 4 is embedded in the bearing and is rotatably installed on the winding disc 3, an air expansion shaft 10 used for installing the fiber yarn barrel 5 is arranged on one side of the rotating disc 4, a rotating shaft is arranged at the other end of the rotating disc 4, the rotating shaft penetrates through the winding disc 3 and is in transmission connection with driven gears 11, transition gears 12 are arranged between the driven gears 11, and mutual synchronous transmission among the groups of driven gears 11 is realized through the transition gears 12;

a rotary rack 13 is arranged on one side, away from the winding disc 3, of the hollow shaft 7, which is positioned on the support 8, the driving device comprises a driving motor 14 and a driving gear 15 arranged on an output shaft of the driving motor 14, and the driving gear 15 is in meshing transmission connection with the rotary rack 13 so as to drive the hollow shaft 7 to rotate;

the yarn barrel 2 is arranged on the support and is controlled to rotate through the servo motor, and is used for collecting wound yarns.

The working principle of the spinning machine is as follows: a fiber yarn barrel 5 for winding fiber yarns is arranged on an air expansion shaft 10 of a rotating disc 4, the fiber yarns are collected into a winding barrel 9 through a yarn guide rod 6, a driving device drives an empty shaft 7 to rotate, so that a winding disc 3 is driven to rotate, each group of fiber yarns are wound into yarns, and the yarns penetrate through an inner cavity of the empty shaft 7 and are collected through a yarn barrel 2. The rotating disc 4 drives the driven gear 11 to rotate when rotating, the driven gear 11 realizes synchronous transmission of each group of driven gears 11 through the transition gear 12, so that synchronous rotation of each group of fiber yarn cylinders 5 on the winding disc 3 is controlled, the release length of each group of fiber yarns is consistent, and the condition that yarns are not uniformly distributed due to overlong fiber yarns is avoided.

Example 2

A production process for improving the comfort of polyester fibers comprises the following steps:

preparing polyether ester master batch:

placing the reaction container in an oven for drying, vacuumizing to room temperature, adding a proper amount of ammonium dichloride, caprolactone, propylene oxide and a catalyst, adding a proper amount of a toluene solution, sealing the reaction bottle, placing the reaction bottle in a constant-temperature oil bath for stirring and reacting, after the reaction is stopped, dissolving a mixture obtained by the reaction with dichloromethane, adding the mixture into a normal hexane solution, violently stirring to separate out a polymer, filtering, and drying to obtain a polyether ester copolymer;

putting the polyether ester copolymer into a vacuum oven for drying for 12 hours, and then adding the polyether ester copolymer into a double-screw extruder for slicing to obtain polyether ester master batches;

the caprolactone and the propylene oxide need to be distilled out through calcium hydride reflux under the protection of nitrogen before use.

The ammonium dichloride needs to be recrystallized by ether solution before use, and then purified and dried.

The catalyst is one of trimethyl aluminum, stannous octoate and stannous chloride.

Preparing modified sliced master batch:

firstly, placing the polyester chips and the polyether ester master batches in a blast oven for drying to remove surface moisture, and then placing the polyester chips and the polyether ester master batches in a vacuum oven for vacuum drying; after drying, uniformly stirring and mixing the polyester chips and the polyether ester master batches through a mixer, adding the mixed polyester chips and polyether ester master batches into a granulator, and extruding and granulating to obtain the modified chip master batches.

Drying for 3 hours in the blast oven at the temperature of 80-100 ℃; and (3) drying for 12 hours in a vacuum oven at the temperature of 100-110 ℃.

The content of the polyether ester master batch in the modified slice master batch is 20 wt%.

Melt spinning:

drying the modified slice master batch and the polyester slice in a blast oven at 100 ℃ for 3h, then drying in a vacuum oven at 106 ℃ for 24h in vacuum, then respectively adding the modified slice master batch and the polyester slice into a double-screw extruder for processing, extruding the modified slice master batch and the polyester slice by screws, then feeding the extruded modified slice master batch and the extruded polyester slice into a spinning assembly in a spinning box body, adjusting the flow of a melt discharged from the spinning assembly by a metering pump, forming the melt into uniform filaments by a heterosexual spinneret plate, and cooling, oiling, stretching, shaping and winding the uniform filaments by side blast to obtain the modified filaments.

The opposite-shaped spinneret plate is a hollow spinneret plate, and hollow fibers are extruded by the hollow spinneret plate.

The temperature of the spinning manifold is 280-300 ℃; the temperature of the cross air is 20-25 ℃, the air speed is 0.3-0.5 m/s, and the relative humidity is 60% -75%; the winding speed is 2000-2500 m/min.

The content of the polyether ester master batch in the modified fiber is 4 wt%.

A fabric is made of modified fiber yarns, the modified fiber yarns are spun into threads by a spinning machine, and is woven into cloth by a spinning machine, the spinning machine comprises a base 1, a silk winding device arranged on the base 1 for winding, and a yarn bobbin 2 arranged on one side of the base 1 far away from the silk winding device for winding yarn, the silk winding device comprises a winding disc 3 and a plurality of groups of rotating discs 4 annularly distributed on the winding disc 3, the rotating discs 4 are used for mounting a fiber silk tube 5, one side of the winding disc 3, which is positioned on the rotating discs 4, is provided with a silk guide rod 6, used for guiding out the fiber yarns of the fiber yarn barrel 5, a hollow shaft 7 is arranged in the middle of the winding disc 3, the hollow shaft 7 is rotatably arranged on a support 8, the hollow shaft 7 is driven to rotate on the support 8 through a driving device, a winding cylinder 9 is fixedly installed in the hollow shaft 7, and the winding cylinder 9 is used for collecting a plurality of groups of fiber yarns;

a bearing is embedded in the winding disc 3 corresponding to the rotating disc 4, the rotating disc 4 is embedded in the bearing and is rotatably installed on the winding disc 3, an air expansion shaft 10 used for installing the fiber yarn barrel 5 is arranged on one side of the rotating disc 4, a rotating shaft is arranged at the other end of the rotating disc 4, the rotating shaft penetrates through the winding disc 3 and is in transmission connection with driven gears 11, transition gears 12 are arranged between the driven gears 11, and mutual synchronous transmission among the groups of driven gears 11 is realized through the transition gears 12;

a rotary rack 13 is arranged on one side, away from the winding disc 3, of the hollow shaft 7, which is positioned on the support 8, the driving device comprises a driving motor 14 and a driving gear 15 arranged on an output shaft of the driving motor 14, and the driving gear 15 is in meshing transmission connection with the rotary rack 13 so as to drive the hollow shaft 7 to rotate;

the yarn barrel 2 is arranged on the support and is controlled to rotate through the servo motor, and is used for collecting wound yarns.

The working principle of the spinning machine is as follows: a fiber yarn barrel 5 for winding fiber yarns is arranged on an air expansion shaft 10 of a rotating disc 4, the fiber yarns are collected into a winding barrel 9 through a yarn guide rod 6, a driving device drives an empty shaft 7 to rotate, so that a winding disc 3 is driven to rotate, each group of fiber yarns are wound into yarns, and the yarns penetrate through an inner cavity of the empty shaft 7 and are collected through a yarn barrel 2. The rotating disc 4 drives the driven gear 11 to rotate when rotating, the driven gear 11 realizes synchronous transmission of each group of driven gears 11 through the transition gear 12, so that synchronous rotation of each group of fiber yarn cylinders 5 on the winding disc 3 is controlled, the release length of each group of fiber yarns is consistent, and the condition that yarns are not uniformly distributed due to overlong fiber yarns is avoided.

Example 3

A production process for improving the comfort of polyester fibers comprises the following steps:

preparing polyether ester master batch:

placing the reaction container in an oven for drying, vacuumizing to room temperature, adding a proper amount of ammonium dichloride, caprolactone, propylene oxide and a catalyst, adding a proper amount of a toluene solution, sealing the reaction bottle, placing the reaction bottle in a constant-temperature oil bath for stirring and reacting, after the reaction is stopped, dissolving a mixture obtained by the reaction with dichloromethane, adding the mixture into a normal hexane solution, violently stirring to separate out a polymer, filtering, and drying to obtain a polyether ester copolymer;

putting the polyether ester copolymer into a vacuum oven for drying for 12 hours, and then adding the polyether ester copolymer into a double-screw extruder for slicing to obtain polyether ester master batches;

the caprolactone and the propylene oxide need to be distilled out through calcium hydride reflux under the protection of nitrogen before use.

The ammonium dichloride needs to be recrystallized by ether solution before use, and then purified and dried.

The catalyst is one of trimethyl aluminum, stannous octoate and stannous chloride.

Preparing modified sliced master batch:

firstly, placing the polyester chips and the polyether ester master batches in a blast oven for drying to remove surface moisture, and then placing the polyester chips and the polyether ester master batches in a vacuum oven for vacuum drying; after drying, uniformly stirring and mixing the polyester chips and the polyether ester master batches through a mixer, adding the mixed polyester chips and polyether ester master batches into a granulator, and extruding and granulating to obtain the modified chip master batches.

Drying for 3 hours in the blast oven at the temperature of 80-100 ℃; and (3) drying for 12 hours in a vacuum oven at the temperature of 100-110 ℃.

The content of the polyether ester master batch in the modified slice master batch is 30 wt%.

Melt spinning:

drying the modified slice master batch and the polyester slice in a blast oven at 100 ℃ for 3h, then drying in a vacuum oven at 106 ℃ for 24h in vacuum, then respectively adding the modified slice master batch and the polyester slice into a double-screw extruder for processing, extruding the modified slice master batch and the polyester slice by screws, then feeding the extruded modified slice master batch and the extruded polyester slice into a spinning assembly in a spinning box body, adjusting the flow of a melt discharged from the spinning assembly by a metering pump, forming the melt into uniform filaments by a heterosexual spinneret plate, and cooling, oiling, stretching, shaping and winding the uniform filaments by side blast to obtain the modified filaments.

The opposite-shaped spinneret plate is a hollow spinneret plate, and hollow fibers are extruded by the hollow spinneret plate.

The temperature of the spinning manifold is 280-300 ℃; the temperature of the cross air is 20-25 ℃, the air speed is 0.3-0.5 m/s, and the relative humidity is 60% -75%; the winding speed is 2000-2500 m/min.

The content of the polyether ester master batch in the modified fiber is 6 wt%.

A fabric is made of modified fiber yarns, the modified fiber yarns are spun into threads by a spinning machine, and is woven into cloth by a spinning machine, the spinning machine comprises a base 1, a silk winding device arranged on the base 1 for winding, and a yarn bobbin 2 arranged on one side of the base 1 far away from the silk winding device for winding yarn, the silk winding device comprises a winding disc 3 and a plurality of groups of rotating discs 4 annularly distributed on the winding disc 3, the rotating discs 4 are used for mounting a fiber silk tube 5, one side of the winding disc 3, which is positioned on the rotating discs 4, is provided with a silk guide rod 6, used for guiding out the fiber yarns of the fiber yarn barrel 5, a hollow shaft 7 is arranged in the middle of the winding disc 3, the hollow shaft 7 is rotatably arranged on a support 8, the hollow shaft 7 is driven to rotate on the support 8 through a driving device, a winding cylinder 9 is fixedly installed in the hollow shaft 7, and the winding cylinder 9 is used for collecting a plurality of groups of fiber yarns;

a bearing is embedded in the winding disc 3 corresponding to the rotating disc 4, the rotating disc 4 is embedded in the bearing and is rotatably installed on the winding disc 3, an air expansion shaft 10 used for installing the fiber yarn barrel 5 is arranged on one side of the rotating disc 4, a rotating shaft is arranged at the other end of the rotating disc 4, the rotating shaft penetrates through the winding disc 3 and is in transmission connection with driven gears 11, transition gears 12 are arranged between the driven gears 11, and mutual synchronous transmission among the groups of driven gears 11 is realized through the transition gears 12;

a rotary rack 13 is arranged on one side, away from the winding disc 3, of the hollow shaft 7, which is positioned on the support 8, the driving device comprises a driving motor 14 and a driving gear 15 arranged on an output shaft of the driving motor 14, and the driving gear 15 is in meshing transmission connection with the rotary rack 13 so as to drive the hollow shaft 7 to rotate;

the yarn barrel 2 is arranged on the support and is controlled to rotate through the servo motor, and is used for collecting wound yarns.

The working principle of the spinning machine is as follows: a fiber yarn barrel 5 for winding fiber yarns is arranged on an air expansion shaft 10 of a rotating disc 4, the fiber yarns are collected into a winding barrel 9 through a yarn guide rod 6, a driving device drives an empty shaft 7 to rotate, so that a winding disc 3 is driven to rotate, each group of fiber yarns are wound into yarns, and the yarns penetrate through an inner cavity of the empty shaft 7 and are collected through a yarn barrel 2. The rotating disc 4 drives the driven gear 11 to rotate when rotating, the driven gear 11 realizes synchronous transmission of each group of driven gears 11 through the transition gear 12, so that synchronous rotation of each group of fiber yarn cylinders 5 on the winding disc 3 is controlled, the release length of each group of fiber yarns is consistent, and the condition that yarns are not uniformly distributed due to overlong fiber yarns is avoided.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof. It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. A production process for improving the comfort level of polyester fibers is characterized by comprising the following steps: the method comprises the following steps:

step one, preparing polyether ester master batch:

placing the reaction container in an oven for drying, vacuumizing to room temperature, adding a proper amount of ammonium dichloride, caprolactone, propylene oxide and a catalyst, adding a proper amount of a toluene solution, sealing the reaction bottle, placing the reaction bottle in a constant-temperature oil bath for stirring and reacting, after the reaction is stopped, dissolving a mixture obtained by the reaction with dichloromethane, adding the mixture into a normal hexane solution, violently stirring to separate out a polymer, filtering, and drying to obtain a polyether ester copolymer;

putting the polyether ester copolymer into a vacuum oven for drying for 12 hours, and then adding the polyether ester copolymer into a double-screw extruder for slicing to obtain polyether ester master batches;

step two, preparing modified slice master batch:

firstly, placing the polyester chips and the polyether ester master batches in a blast oven for drying to remove surface moisture, and then placing the polyester chips and the polyether ester master batches in a vacuum oven for vacuum drying; after drying, uniformly stirring and mixing the polyester slices and the polyether ester master batches through a mixer, adding the mixed polyester slices and polyether ester master batches into a granulator, and extruding and granulating to obtain modified slice master batches;

step three, melt spinning:

drying the modified slice master batch and the polyester slice in a blast oven at 100 ℃ for 3h, then drying in a vacuum oven at 106 ℃ for 24h in vacuum, then respectively adding the modified slice master batch and the polyester slice into a double-screw extruder for processing, extruding the modified slice master batch and the polyester slice by screws, then feeding the extruded modified slice master batch and the extruded polyester slice into a spinning assembly in a spinning box body, adjusting the flow of a melt discharged from the spinning assembly by a metering pump, forming the melt into uniform filaments by a heterosexual spinneret plate, and cooling, oiling, stretching, shaping and winding the uniform filaments by side blast to obtain the modified filaments.

2. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: the caprolactone and the propylene oxide need to be distilled out through calcium hydride reflux under the protection of nitrogen before use.

3. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: the ammonium dichloride needs to be recrystallized by ether solution before use, and then purified and dried.

4. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: the catalyst is one of trimethyl aluminum, stannous octoate and stannous chloride.

5. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: drying for 3 hours in the blast oven in the second step at the temperature of 80-100 ℃; and (3) drying for 12 hours in a vacuum oven at the temperature of 100-110 ℃.

6. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: and the content of the polyether ester master batch in the modified slice master batch in the step two is 10-30 wt%.

7. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: the opposite spinneret plate in the third step is a hollow spinneret plate, and hollow fibers are extruded by the hollow spinneret plate.

8. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: the temperature of the spinning manifold in the third step is 280-300 ℃; the temperature of the cross air is 20-25 ℃, the air speed is 0.3-0.5 m/s, and the relative humidity is 60% -75%; the winding speed is 2000-2500 m/min.

9. The process of claim 1, wherein the at least one polyester fiber is selected from the group consisting of: the content of the polyether ester master batch in the modified fiber in the third step is 2-6 wt%.

10. A fabric according to any one of claims 1 to 9, wherein: the fabric is made of modified fiber yarns, the modified fiber yarns are spun into threads through a spinning machine and are woven into cloth through the spinning machine, the spinning machine comprises a base, a yarn winding device and a yarn bobbin, the yarn winding device is arranged on the base and used for winding yarns, the yarn bobbin is arranged on one side, away from the yarn winding device, of the base and used for winding yarns, the yarn winding device comprises a winding disc and a plurality of groups of rotating discs, the rotating discs are annularly distributed on the winding disc, the rotating discs are used for mounting the fiber yarn bobbins, yarn guide rods are arranged on one sides, located on the rotating discs, of the winding disc and used for guiding out the fiber yarns of the fiber yarn bobbins, a hollow shaft is arranged in the middle of the winding disc, the hollow shaft is rotatably mounted on a support and is driven by a driving device to rotate on the support, the winding bobbin is fixedly mounted in the hollow shaft, and the winding bobbin is used for collecting the plurality of groups of fiber yarns;

the winding disc is embedded with a bearing corresponding to the rotating disc, the rotating disc is embedded into the bearing and is rotatably arranged on the winding disc, one side of the rotating disc is provided with an air expansion shaft for mounting a fiber tube, the other end of the rotating disc is provided with a rotating shaft, the rotating shaft penetrates through the winding disc and is in transmission connection with driven gears, transition gears are arranged among the driven gears, and mutual synchronous transmission among all groups of driven gears is realized through the transition gears;

the driving device comprises a driving motor and a driving gear arranged on an output shaft of the driving motor, and the driving gear is in meshed transmission connection with the rotating rack so as to drive the hollow shaft to rotate;

the yarn barrel is arranged on the support and is controlled to rotate through the servo motor, and the yarn barrel is used for collecting wound yarns.

Images