CN115434016A - Preparation process of flame-retardant polyester fiber POY (polyester pre-oriented yarn) - Google Patents
Preparation process of flame-retardant polyester fiber POY (polyester pre-oriented yarn) Download PDFInfo
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- CN115434016A CN115434016A CN202211176414.0A CN202211176414A CN115434016A CN 115434016 A CN115434016 A CN 115434016A CN 202211176414 A CN202211176414 A CN 202211176414A CN 115434016 A CN115434016 A CN 115434016A
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- 229920000728 polyester Polymers 0.000 title claims abstract description 46
- 239000003063 flame retardant Substances 0.000 title claims abstract description 42
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 title claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 148
- 238000009987 spinning Methods 0.000 claims abstract description 100
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 9
- 229920004934 Dacron® Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 230000002337 anti-port Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
-
- 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
Abstract
The application relates to the field of spinning technology, in particular to a preparation process of flame-retardant polyester fiber POY yarns, which comprises the steps of cleaning, impurity removal, screening, crystallization and drying polyester chips, and then feeding the polyester chips into an extruder for heating to form a spinning melt; adding a flame retardant into the spinning melt through an extruder and carrying out primary mixing in the extruder; the spinning melt after primary mixing is sent into remixing equipment for secondary mixing; the spinning melt after the secondary mixing is sent into a spinning manifold, and then is sprayed out through a spinneret plate to form primary yarns; the primary yarn is cooled by cross air blowing, bundled and oiled, and then wound to obtain the flame-retardant polyester POY yarn, so that the spinning melt is uniformly mixed before entering a spinning manifold, the spinning melt fed to a spinneret plate in the spinning manifold is more uniform, and the quality of the prepared flame-retardant polyester POY yarn is improved.
Description
Technical Field
The application relates to the field of spinning technology, in particular to a preparation process of flame-retardant polyester fiber POY (polyester pre-oriented yarn).
Background
Polyester fiber, dacron, is a silk thread that uses extensively, and dacron POY silk is the silk thread of drawing totally after the spinning is accomplished, compares the silk thread of drawing totally, and dacron POY has better stability, more is fit for storing and transporting. In the process of storage and transportation, a large number of polyester POY yarns are stacked together, and once a fire disaster occurs, the polyester POY yarns are easy to burn in a large amount, so that the polyester POY yarns are required to have good flame retardant property.
The existing preparation methods of the flame-retardant polyester POY yarn are multiple, wherein one method is blending flame-retardant modification, namely adding a flame retardant into a spinning melt, mixing the flame retardant with an extruder and a spinning box body, and then spraying the mixture out through a spinneret plate.
Aiming at the related technologies, the spinning melt and the flame retardant are difficult to be fully and uniformly mixed only by mixing the spinning melt in the extruder and the spinning manifold, and the flame retardant performance of the yarns sprayed by the un-fully mixed spinning melt is easy to be nonuniform, so that the quality of the prepared flame-retardant polyester POY yarns is greatly influenced.
Disclosure of Invention
In order to reduce the influence on the quality of the flame-retardant polyester POY yarns, the application provides a preparation process of the flame-retardant polyester POY yarns.
The preparation process of the flame-retardant polyester fiber POY adopts the following technical scheme.
A preparation process of a flame-retardant polyester fiber POY yarn specifically comprises the following steps.
Step 1, cleaning, removing impurities, screening, crystallizing and drying polyester chips, and then feeding the polyester chips into an extruder to be heated to form a spinning melt;
step 4, feeding the spinning melt after secondary mixing into a spinning box, and then ejecting the spinning melt through a spinneret plate to form primary yarns;
and 5, cooling the primary yarn by cross air blowing, collecting and oiling, and winding to obtain the flame-retardant polyester POY yarn.
Through adopting above-mentioned technical scheme, make before the spinning fuse-element enters into the spinning manifold, can mix via remixing equipment earlier, compare in only mixing via the in-process that the spinning fuse-element is promoted to flow in extruder and spinning manifold, the spinning fuse-element and the fire retardant of this application mix more evenly abundant, make the fire-retardant dacron POY silk quality of making be difficult for receiving great influence, remixing equipment is placed and is also made the temperature of spinning fuse-element and can obtain promoting and keeping after entering into the spinning manifold between extruder and the spinning manifold simultaneously, so that corresponding silk thread is made via the spinneret to the follow-up spinning fuse-element.
Optionally, the remixing device includes a mixing tank communicated with the extruder and used for feeding the spinning melt, a second mixing tank communicated with a discharge port of the mixing tank and a feed port of the spinning tank, a horizontal mixing device arranged in the mixing tank and used for mixing the spinning melt on the same horizontal plane, and a vertical mixing device arranged in the second mixing tank and used for mixing the spinning melt on the same vertical plane.
By adopting the technical scheme, the spinning melt sent out by the extruder firstly passes through the first mixing kettle and then enters the second mixing box, so that the insufficiently mixed spinning melt is not easy to directly enter the spinning box body.
Optionally, the flat mixing device comprises a plurality of branch rotating shafts arranged around the central line of the mixing kettle, a plurality of rows of flat mixing blades arranged on each branch rotating shaft, and a same rotating mechanism arranged on the mixing kettle and driving all the branch rotating shafts to rotate, wherein each row of flat mixing blades are arranged in a plurality of groups along the axis of the branch rotating shaft, and two adjacent rows of flat mixing blades are arranged in a staggered manner.
Through adopting above-mentioned technical scheme, a plurality of minutes pivots can carry out effective and abundant mixing to a spinning fuse-element that mixes in the cauldron, and the flat blade that mixes that is the dislocation simultaneously also can carry out comparatively abundant mixing to a spinning fuse-element that mixes in the cauldron in as much as possible the horizontal plane, promotes mixed effect.
Optionally, the co-rotating mechanism includes a main rotating shaft fixedly connected to the mixing kettle by using a central line of the mixing kettle as an axis, a coupling plate rotatably connected to the main rotating shaft and allowing each sub-rotating shaft to rotatably connect, a fixed gear coaxially and fixedly connected to the main rotating shaft, a plurality of moving gears coaxially and fixedly connected to each sub-rotating shaft and all engaged with the fixed gear, a power gear coaxially and fixedly connected to the coupling plate, and a flat-rotating motor disposed on the mixing kettle and driving the power gear to rotate.
By adopting the technical scheme, the flat-turning motor is communicated with an external power supply to enable the power gear and the connecting shaft plate to rotate, all the branch rotating shafts can revolve around the rotating axis of the connecting shaft plate, all the moving gears also revolve around the rotating axis of the connecting shaft plate, and because the fixed gear is fixed in position, each branch rotating shaft can rotate around the axis of the branch rotating shaft, the mixing effect of the spinning melt is improved, in addition, the rotation direction and the revolution direction of the branch rotating shafts are consistent, the spinning melt on the same horizontal plane can form turbulence more easily, and the mixing effect is further improved.
Optionally, a plurality of outer ring partition plates are arranged on the inner wall of the first mixing kettle, each outer ring partition plate is correspondingly inserted between two adjacent groups of flat mixing blades in the same row, a kettle inner rod is arranged at the position, away from the connecting shaft plate, of the inner wall of the first mixing kettle, a plurality of inner ring partition plates are fixedly connected to the kettle inner rod, and each inner ring partition plate is correspondingly inserted between two adjacent groups of flat mixing blades in the same row.
Through adopting above-mentioned technical scheme for the difficult direct blade that mixes of every group of flat of spinning fuse-element, make the spinning fuse-element can be longer in the dwell time of each group of flat blade place horizontal plane that mixes, promote the mixed effect of spinning fuse-element.
Optionally, the upper surfaces of the outer ring partition plate and the inner ring partition plate are inclined, and the circumferential periphery of the lowest point of the inclined surfaces of the outer ring partition plate and the inner ring partition plate is close to the sub-rotating shaft.
Through adopting above-mentioned technical scheme for let the spinning fuse-element constantly receive the extrusion and get into the in-process that mixes the cauldron, the slope upper surface of outer lane baffle and inner circle baffle all is difficult for having some spinning fuse-element to keep the static condition to appear, makes the spinning fuse-element can flow smoothly and get into to two in the mixing the cauldron one.
Optionally, erect and mix the device including rotate connect in two mix the incasement wall the array vertical surface pivot, fixed connection in each vertical surface pivot erect mix the blade, locate two and mix the case and drive vertical surface pivot pivoted and erect the commentaries on classics motor, the perpendicular blade that mixes of two adjacent vertical surface pivots in same group is dislocation set.
Through adopting above-mentioned technical scheme to the spinning fuse-element to in the vertical face mixes, in order to carry out the ascending mixture of another side to the spinning fuse-element, promotes final mixed effect, and erect to mix the blade and be the dislocation and make the spinning fuse-element in the different vertical faces obtain comparatively abundant mixture.
Optionally, a set of vertical partition plates are arranged on the upper surface and the lower surface in the two mixing boxes, each vertical partition plate is located between two adjacent sets of vertical surface rotating shafts, and the height of the lower surface of the vertical partition plate with the high central point is lower than that of the upper surface of the vertical partition plate with the low central point.
Through adopting above-mentioned technical scheme for the spinning fuse-element is snakelike flow in two mixing casees, makes the spinning fuse-element can fully pass through every group vertical plane pivot department, in order to obtain the mixture on the comparatively abundant vertical plane.
Optionally, the side of the position where the vertical partition plate is communicated with the first mixing tank towards the second mixing tank is inclined, and one side of the inclined surface of the vertical partition plate, which is close to the horizontal central line of the second mixing tank, is far away from the position where the second mixing tank is communicated with the first mixing tank.
By adopting the technical scheme, the vertical partition plate is not easy to block partial flow of the spinning melt, so that the spinning melt can flow fully and smoothly in the secondary mixing box.
Optionally, each vertical surface rotating shaft is coaxially and fixedly connected with an end gear, the end gears of two adjacent vertical surface rotating shafts in the same group are meshed with each other, and the vertical rotating motor drives the end gear of one vertical surface rotating shaft in each group to rotate.
Through adopting above-mentioned technical scheme, a perpendicular motor that changes drives a tip gear revolve, make all tip gears that correspond a set of vertical plane pivot carry out synchronous rotation, and two adjacent tip gear direction rotations in the vertical plane pivot of same group, make two adjacent vertical plane pivot antiport in the same group, make two adjacent vertical plane blade antiport that mix with the vertical plane pivot in same vertical side, make the spinning fuse-element can form the torrent more easily when following vertical direction through same group vertical plane pivot, promote the mixed effect of spinning fuse-element.
In summary, the present application includes at least one of the following benefits:
1. before the spinning melt enters the spinning manifold, the spinning melt is mixed by the remixing device, compared with the method that the spinning melt is only mixed in the process that the spinning melt is pushed to flow in the extruder and the spinning manifold, the spinning melt and the flame retardant are mixed more uniformly and sufficiently, so that the quality of the prepared flame-retardant polyester POY is not easily influenced greatly;
2. all the branch pivots can carry out the revolution around the axis of rotation of connecting plate to each divides the pivot homoenergetic to carry out the rotation around self axis, in order to promote the mixed effect to the spinning fuse-element, the rotation direction and the revolution direction of dividing the pivot are unanimous in addition, make the spinning fuse-element on the same horizontal plane can form the torrent more easily, further promote mixed effect.
Drawings
FIG. 1 is a schematic view of a first mixing tank and a second mixing tank in a remixing apparatus of the present application, with one half cut away;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic view of the structure of the two-mixing box at the side where the end gear is provided.
Description of reference numerals: 1. a mixing kettle; 2. a second mixing box; 3. a horizontal mixing device; 31. a flat rotating motor gear; 32. vertically rotating a motor gear; 4. a vertical mixing device; 41. an inner kettle rod; 42. an inner ring spacer; 43. a vertical surface rotating shaft; 44. vertically mixing the blades; 45. vertically rotating the motor; 46. a vertical partition plate; 47. an end gear; 48. a gantry frame; 49. plate holes; 5. a main rotating shaft; 51. a branch rotating shaft; 52. mixing the blades horizontally; 53. a co-rotation mechanism; 54. a coupling plate; 55. a fixed gear; 56. a moving gear; 57. a power gear; 58. a translational motor; 59. an outer ring clapboard.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a preparation process of a flame-retardant polyester fiber POY (polyester pre-oriented yarn), which specifically comprises the following steps.
Step 1, cleaning, removing impurities, screening, crystallizing and drying polyester chips, and then feeding the polyester chips into an extruder to be heated to form a spinning melt;
Step 4, feeding the spinning melt after secondary mixing into a spinning manifold, and then ejecting the spinning melt through a spinneret plate to form primary yarns
And 5, cooling the primary yarn by cross air blowing, collecting bundles, oiling, and winding to obtain the flame-retardant polyester POY yarn.
Referring to fig. 1, the remixing device includes a first mixing tank 1 and a second mixing tank 2 disposed on a corresponding steel structure support (not shown in the figure), a feed port of the first mixing tank 1 is communicated with a discharge port of the extruder, a feed port of the second mixing tank 2 is communicated with a bottom discharge port of the first mixing tank 1, and a melt gear pump can be disposed between the first mixing tank 1 and the second mixing tank 2 to enable the spinning melt to be smoothly conveyed from the first mixing tank 1 to the second mixing tank 2. The discharge hole of the second mixing box 2 is communicated with the feed inlet of the spinning box body. The first mixing kettle 1 is internally provided with a horizontal mixing device 3 for mixing spinning melt on the same horizontal plane, and the second mixing tank 2 is internally provided with a vertical mixing device 4 for mixing the spinning melt on the same vertical plane.
Referring to fig. 1, the device 3 is mixed including surrounding three branch pivots 51 that mix the setting of the 1 vertical axis of cauldron in the tie, branch pivot 51 axis is vertical, every branch pivot 51 circumference outer wall equal fixedly connected with one row of flat blade 52 that mixes, every row of flat blade 52 that mixes all evenly sets up the array along vertical direction, every group flat blade 52 that mixes evenly sets up the several around the branch pivot 51 axis that corresponds, two adjacent rows of flat blade 52 that mix are the dislocation set, make every branch pivot 51 go up the flat spinning fuse-element that can also carry out intensive mixing to each horizontal plane in the vertical direction under the reasonable circumstances of flat blade 52 quantity control that mixes. A mixing kettle 1 is provided with a co-rotating mechanism 53 which drives all the sub-rotating shafts 51 to rotate.
Referring to fig. 1 and 2, the co-rotating mechanism 53 includes a door frame 48 integrally formed on the top of a mixing kettle 1, a total rotating shaft 5 is fixedly connected to the center of the bottom of the horizontal section of the door frame 48, the axis of the total rotating shaft 5 is the same as the axis of the mixing kettle 1, a coupling plate 54 is coaxially and rotatably connected to the bottom of the total rotating shaft 5, a plate hole 49 is coaxially and penetratingly formed in the top of the mixing kettle 1, the coupling plate 54 is hermetically and rotatably connected to the circumferential inner wall of the plate hole 49, the upper end of each sub-rotating shaft 51 is rotatably connected to the bottom of the coupling plate 54, three moving gears 56 are rotatably connected to the upper surface of the coupling plate 54, each moving gear 56 is coaxially and fixedly connected to a corresponding sub-rotating shaft 51, a fixed gear 55 is coaxially and fixedly connected to the circumferential outer wall of the total rotating shaft 5, the fixed gear 55 is engaged with the three moving gears 56, a power gear 57 is coaxially and fixedly connected to the circumference of the upper surface of the coupling plate 54, a co-rotating motor 58 is fixedly connected to the upper surface of the mixing kettle 1, a co-rotating shaft 58, a co-rotating motor gear 31 is coaxially and fixedly connected to a rotating gear 31 engaged with the power gear 57, so that the three sub rotating shaft 51 can rotate around the axis of the total rotating shaft 5.
Referring to fig. 1, a mix a plurality of coaxial fixedly connected with outer lane baffles 59 of 1 circumference inner wall of cauldron, a pole 41 in the coaxial fixedly connected with cauldron of the inside bottom surface center department of a mixed cauldron 1, the coaxial fixedly connected with of pole 41 circumference outer wall is a horizontally inner circle baffle 42, each outer lane baffle 59 all corresponds an inner circle baffle 42, a corresponding outer lane baffle 59 and an inner circle baffle 42 are located same horizontal plane, the inner circle circumference outer wall of outer lane baffle 59 and the outer lane circumference outer wall of inner circle baffle 42 are all close to branch pivot 51, all set up an outer lane baffle 59 and an inner circle baffle 42 between adjacent two sets of flat mixing blades 52 in vertical direction, make the spinning fuse-element difficult appear not directly enter into two and mix in the case 2 under the condition that the flat mixing blade 52 mixes. The upper surfaces of the outer ring partition plate 59 and the inner ring partition plate 42 are inclined, and the side edges of the lowest points of the inclined surfaces of the outer ring partition plate 59 and the inner ring partition plate 42 are close to the branch rotating shaft 51, so that the spinning melt is not easy to flow downwards on the upper surfaces of the outer ring partition plate 59 and the inner ring partition plate 42. The height of the feed inlet of a mixing kettle 1 is higher than that of the highest outer ring baffle 59.
Referring to fig. 1, the vertical mixing device 4 includes the vertical plane pivot 43 that rotates to be connected in the vertical inner wall of two mixed case 2 length direction, vertical plane pivot 43 is along two mixed case 2 length direction equipartition arrays, every group vertical plane pivot 43 all evenly sets up several along vertical direction, every vertical plane pivot 43 all rotates and is connected with one row of vertical mixing blade 44, every row of vertical mixing blade 44 evenly sets up the array along vertical plane pivot 43 axis direction, every group vertical mixing blade 44 all evenly sets up several around vertical plane pivot 43 axis, two rows of vertical mixing blade 44 of two adjacent vertical plane pivots 43 in the same group are dislocation set, and there is partial coincidence in the projection of two adjacent sets of vertical mixing blade 44 on the horizontal plane on two mixed case 2 width directions, make the spinning fuse-element in the vertical plane on two mixed case 2 width directions can fully receive the mixing effect of vertical mixing blade 44.
Referring to fig. 1 and 3, the vertical mixing device 4 further comprises a plurality of vertical rotating motors 45 fixedly connected to the upper surface of the two mixing boxes 2, each vertical rotating motor 45 corresponds to one row of vertical rotating shafts 43, the end part of each vertical rotating shaft 43 is fixedly connected with an end gear 47, the end gears 47 of two adjacent vertical rotating shafts 43 in the same row are meshed, each output shaft of each vertical rotating motor 45 is fixedly connected with a vertical rotating motor gear 32, each vertical rotating motor gear 32 is meshed with the highest end gear 47 in the corresponding row, and the vertical mixing blades 44 of two adjacent vertical rotating shafts 43 in the same row are enabled to rotate in the same direction.
Referring to fig. 1, the inside upper surface of two mixing box 2 and a set of perpendicular baffle 46 of equal fixedly connected with of lower surface, erect two vertical side one-to-one fixed connection in two vertical inner walls of two mixing box 2 of length direction of baffle 46 relatively, two sets of perpendicular baffles 46 are the dislocation set, all there is a perpendicular baffle 46 between two adjacent rows of vertical plane pivots 43, the high perpendicular baffle 46 lower surface height of central point is less than the low perpendicular baffle 46 upper surface height of central point, make the spinning fuse-element be snakelike antedisplacement in two mixing box 2, so that the spinning fuse-element can fully pass through each row of vertical plane pivots 43. The side surface of each vertical partition plate 46 facing the feeding port of the two mixing boxes 2 is inclined, and the inclined side surface of each vertical partition plate 46 is close to one side of the central line of the length direction of the two mixing boxes 2 and is far away from the feeding port of the two mixing boxes 2, so that when the spinning melt moves forwards in the two mixing boxes 2, the situation that a certain part is blocked by the vertical partition plate 46 is not easy to occur. The feed inlet of the second mixing box 2 is positioned at the bottom of the second mixing box 2, and the vertical partition plate 46 closest to the feed inlet of the second mixing box 2 is connected to the bottom surface of the second mixing box 2.
The implementation principle of the preparation process of the flame-retardant polyester fiber POY yarn provided by the embodiment of the application is as follows: the spinning melt that carries out preliminary mixing in the extruder enters into one and mixes in cauldron 1 earlier, through receiving the mixing of dividing the flat blade 52 that the pivot 51 drove and carry out revolution and rotation, in order to realize carrying out intensive mixing on the horizontal plane at one and mixing cauldron 1, then the spinning melt enters into two and mixes case 2, through each row of vertical plane pivot 43, make every group vertical mixing blade 44 carry out intensive mixing on the vertical plane to the spinning melt, the spinning melt that final mixing was accomplished is sent into to the spinning box in, then through spouting by the spinneret and via the cooling winding of oiling formation fire-retardant dacron POY silk.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A preparation process of flame-retardant polyester POY (polyester pre-oriented yarn) is characterized by comprising the following steps of: the method specifically comprises the following steps:
step 1, washing, removing impurities, screening, crystallizing and drying polyester chips, and then feeding the polyester chips into an extruder to heat the polyester chips to form a spinning melt;
step 2, adding a flame retardant into the spinning melt through an extruder and carrying out primary mixing in the extruder;
step 3, feeding the spinning melt after primary mixing into remixing equipment for secondary mixing;
step 4, feeding the spinning melt after secondary mixing into a spinning box, and then ejecting the spinning melt through a spinneret plate to form primary yarns;
and 5, cooling the primary yarn by cross air blowing, collecting bundles, oiling, and winding to obtain the flame-retardant polyester POY yarn.
2. The preparation process of the flame-retardant polyester POY yarn as claimed in claim 1, wherein the process comprises the following steps: the remixing device comprises a mixing kettle (1) communicated with the extruder and used for feeding spinning melt, a second mixing box (2) communicated with a discharge port of the mixing kettle (1) and a feed port of the spinning box body, a horizontal mixing device (3) arranged in the mixing kettle (1) and used for mixing the spinning melt on the same horizontal plane, and a vertical mixing device (4) arranged in the second mixing box (2) and used for mixing the spinning melt on the same vertical plane.
3. The preparation process of the flame-retardant polyester fiber POY yarn as claimed in claim 2, wherein the preparation process comprises the following steps: the horizontal mixing device (3) comprises a plurality of branch rotating shafts (51) arranged around the center line of the mixing kettle (1), a plurality of rows of horizontal mixing blades (52) arranged on each branch rotating shaft (51), and a same rotating mechanism (53) arranged on the mixing kettle (1) and driving all the branch rotating shafts (51) to rotate, wherein each row of horizontal mixing blades (52) are arranged in a plurality of groups along the axis of the branch rotating shaft (51), and two adjacent rows of horizontal mixing blades (52) are arranged in a staggered manner.
4. The preparation process of the flame-retardant polyester POY yarn as claimed in claim 3, wherein the preparation process comprises the following steps: the co-rotating mechanism (53) comprises a main rotating shaft (5) which is fixedly connected with the mixing kettle (1) by taking the central line of the mixing kettle (1) as an axis, a connecting shaft plate (54) which is rotatably connected with the main rotating shaft (5) and is used for rotatably connecting each sub-rotating shaft (51), a fixed gear (55) which is coaxially and fixedly connected with the main rotating shaft (5), a plurality of moving gears (56) which are coaxially and fixedly connected with each sub-rotating shaft (51) and are respectively meshed with the fixed gear (55), a power gear (57) which is coaxially and fixedly connected with the connecting shaft plate (54), and a flat-rotating motor (58) which is arranged on the mixing kettle (1) and drives the power gear (57) to rotate.
5. The preparation process of the flame-retardant polyester POY yarn as claimed in claim 3, wherein the preparation process comprises the following steps: the inner wall of the mixing kettle (1) is provided with a plurality of outer ring partition plates (59), each outer ring partition plate (59) is correspondingly inserted between two adjacent groups of flat mixing blades (52) in the same row, the inner wall of the mixing kettle (1) far away from the coupling plate (54) is provided with a kettle inner rod (41), the kettle inner rod (41) is fixedly connected with a plurality of inner ring partition plates (42), and each inner ring partition plate (42) is correspondingly inserted between two adjacent groups of flat mixing blades (52) in the same row.
6. The preparation process of the flame-retardant polyester fiber POY yarn as claimed in claim 5, wherein the preparation process comprises the following steps: the upper surfaces of the outer ring partition plate (59) and the inner ring partition plate (42) are inclined, and the circumference periphery of the lowest point of the inclined surfaces of the outer ring partition plate (59) and the inner ring partition plate (42) is close to the sub-rotating shaft (51).
7. The preparation process of the flame-retardant polyester fiber POY yarn as claimed in claim 2, wherein the preparation process comprises the following steps: erect and mix device (4) including rotate connect in two mix the perpendicular face pivot (43) of the array of case (2) inner wall, fixed connection in perpendicular mixed blade (44) of each perpendicular face pivot (43), locate two and mix case (2) and drive perpendicular face pivot (43) pivoted and erect commentaries on classics motor (45), the perpendicular mixed blade (44) of two adjacent perpendicular face pivots (43) are dislocation set in the same group.
8. The preparation process of the flame-retardant polyester fiber POY yarn as claimed in claim 7, wherein the preparation process comprises the following steps: the upper surface and the lower surface in the two mixing boxes (2) are respectively provided with a group of vertical partition plates (46), each vertical partition plate (46) is positioned between two adjacent groups of vertical surface rotating shafts (43), and the height of the lower surface of the vertical partition plate (46) with a high central point is lower than that of the upper surface of the vertical partition plate (46) with a low central point.
9. The preparation process of the flame-retardant polyester POY yarn as claimed in claim 8, wherein the process comprises the following steps: the side of the position where the vertical partition plate (46) is communicated with the first mixing kettle (1) towards the second mixing box (2) is inclined, and one side of the inclined surface of the vertical partition plate (46) close to the horizontal central line of the second mixing box (2) is far away from the position where the second mixing box (2) is communicated with the first mixing kettle (1).
10. The preparation process of the flame-retardant polyester POY yarn as claimed in claim 7, wherein the process comprises the following steps: each vertical surface rotating shaft (43) is coaxially and fixedly connected with an end gear (47), the end gears (47) of two adjacent vertical surface rotating shafts (43) in the same group are meshed, and a vertical rotating motor (45) drives the end gear (47) of one vertical surface rotating shaft (43) in each group to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211176414.0A CN115434016A (en) | 2022-09-26 | 2022-09-26 | Preparation process of flame-retardant polyester fiber POY (polyester pre-oriented yarn) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211176414.0A CN115434016A (en) | 2022-09-26 | 2022-09-26 | Preparation process of flame-retardant polyester fiber POY (polyester pre-oriented yarn) |
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| CN211709665U (en) * | 2019-12-27 | 2020-10-20 | 四川霖彬建材有限公司 | Mixing mechanism for concrete mixing plant |
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| WO2005093138A1 (en) * | 2004-03-26 | 2005-10-06 | Saurer Gmbh & Co. Kg | Method and device for melt spinning fine synthetic fibres |
| CN102586907A (en) * | 2012-03-04 | 2012-07-18 | 江苏德赛化纤有限公司 | Production method of inflaming retarding hollow polyster fiber |
| CN205502138U (en) * | 2016-04-01 | 2016-08-24 | 广西南宁铭吉环保科技有限公司 | No stagnant water cell type water tank |
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Application publication date: 20221206 |