CN109322003A - High hydrophilic no antimony spun lacing dedicated fiber manufacturing method - Google Patents
High hydrophilic no antimony spun lacing dedicated fiber manufacturing method Download PDFInfo
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- CN109322003A CN109322003A CN201811272900.6A CN201811272900A CN109322003A CN 109322003 A CN109322003 A CN 109322003A CN 201811272900 A CN201811272900 A CN 201811272900A CN 109322003 A CN109322003 A CN 109322003A
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- antimony
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- spun lacing
- dedicated fiber
- polyester
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- 239000000835 fiber Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910052787 antimony Inorganic materials 0.000 title claims abstract description 21
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000003054 catalyst Substances 0.000 claims abstract description 29
- 229920000728 polyester Polymers 0.000 claims abstract description 29
- 238000005886 esterification reaction Methods 0.000 claims abstract description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000032050 esterification Effects 0.000 claims abstract description 18
- 150000003608 titanium Chemical class 0.000 claims abstract description 18
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 230000001131 transforming effect Effects 0.000 claims abstract description 13
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 7
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 4
- 239000000376 reactant Substances 0.000 claims abstract description 3
- 238000009987 spinning Methods 0.000 claims description 22
- 239000010936 titanium Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 4
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 8
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 8
- 229920000297 Rayon Polymers 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003292 glue Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000006068 polycondensation reaction Methods 0.000 description 14
- 239000002002 slurry Substances 0.000 description 13
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 238000009998 heat setting Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 208000019901 Anxiety disease Diseases 0.000 description 5
- 230000036506 anxiety Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002788 crimping Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000007086 side reaction Methods 0.000 description 4
- 150000003384 small molecules Chemical class 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention provides a kind of high hydrophilic no antimony spun lacing dedicated fiber manufacturing methods, its step includes: that terephthalic acid (TPA) and excessive ethylene glycol are first esterified the polyethylene terephthalate that preshrunk is polymerized to low polymerization degree, Titanium series catalyst is added in esterification into reactant, metering addition enters on esterifying kettle to the Location Detection of Medium Transportation Pipeline of precondensation kettle after polyethylene glycol is heated, and ultraviolet light transforming agent, phosphorus system stabilizer, delustering agent and Titanium series catalyst are continuously added into during precondensation；Then final minification is polymerized to the final polyester product of high polymerization degree；Molten mass arranges after heat exchange heats up through continuous later, high hydrophilic no antimony spun lacing dedicated fiber.The PET of present invention process good hydrophilic property replaces viscose glue to make spun lacing dedicated fiber, can improve the hydrophilic effect of fiber and reduce production cost, and reduce the reaction temperature in process of manufacture, not only energy-saving and emission-reduction, but also improve efficiency, reduce the pollution to environment.
Description
Technical field
The invention belongs to field of textiles, in particular to high hydrophilic no antimony spun lacing dedicated fiber manufacturing method.
Background technique
The antimony-based catalyst generallyd use in conventional polyester production has shortcomings: 1. in polyester polycondensation reaction, and antimony is urged
Agent can partial reduction grey；2. the polyester of synthesis is in spinning, since the reduction accumulation of heavy metal will increase filament spinning component
Pressure；3. heavy metal antimony has certain toxicity, not only it is precipitated to cause environmental pollution, PET terminal in PET dyeing course
Product similarly brings annual 10,000 tons antimony into the Nature after becoming rubbish, causes expendable pollution.And existing water
Spunlaced nonwoven needs to improve water imbibition with a certain proportion of viscose glue mainly for the production of wet tissue in production process.But viscose glue
Hydrophily effect is not especially advantageous, and the cost of material of viscose glue is higher, so the urgently more superior material of performance and ring
The process of guarantor improves to manufacture cloth technique to spun lacing.
Summary of the invention
Technical problem: in order to solve the defects of prior art, the present invention provides a kind of high hydrophilic no dedicated fibres of antimony spun lacing
Tie up manufacturing method.
Technical solution: the hydrophilic no antimony spun lacing dedicated fiber manufacturing method of height provided by the invention, step include polyester slurry
The esterification of material, precondensation, final minification be poly-, spinning and final finishing, it is characterised in that: is first esterified terephthalic acid (TPA) and excess ethylene glycol
Preshrunk is polymerized to the polyethylene terephthalate of low polymerization degree, is continuously added into titanium system into reactant in esterification reaction process and urges
Agent enters storage tank and enters esterifying kettle to precondensation by measuring control valve and metered shot pump addition after heating polyethylene glycol
On the Location Detection of Medium Transportation Pipeline of kettle, ultraviolet light transforming agent, phosphorus system stabilizer, delustering agent and titanium system are continuously added into during precondensation
Catalyst；Then final minification is polymerized to the final polyester product of high polymerization degree；Molten mass enters manifold after heat exchange heats up, through spraying
Silk, cooling, traction, winding and arrange, high hydrophilic no antimony spun lacing dedicated fiber.
As a kind of prioritization scheme: the Titanium series catalyst, ultraviolet light transforming agent, phosphorus system stabilizer and delustering agent are to adjust
The mode fitted in ethylene glycol is added.
As advanced optimizing scheme: the polyethylene glycol of molecular weight 2000-4000, total weight of adding account for polyester total weight
6.5%-7.5%。
As advanced optimizing scheme: the Ti content in Titanium series catalyst accounts for 35~50ppm of polyester total amount, is being esterified
The ratio of reaction and prepolymerization reaction addition is 1:9~7:3；Ultraviolet light transforming agent accounts for 2~3ppm of total amount in polyester, and phosphorus system is steady
Determine 15~20ppm that agent accounts for total amount in polyester；The Titanium series catalyst is titanate ester compound.
As advanced optimizing scheme: precondensation temperature and pressure is set as 270 DEG C, 2000~3300Pa；The poly- temperature of final minification
Degree and pressure setting are as follows: 280~285 DEG C, 60~130Pa.
As advanced optimizing scheme: using aperture for the spinneret of 0.4mm in spinning process；Cooling wind temperature is set as
10~15 DEG C；The traction pressure of dragger is set as 0.2~0.38bar；Spinning winding speed is set as 1250m/min.
The utility model has the advantages that the PET of the hydrophilic no antimony spun lacing dedicated fiber manufacturing method good hydrophilic property of height provided by the invention takes
Spun lacing dedicated fiber is made for viscose glue, the hydrophilic effect of fiber can be improved and reduce production cost, and reduce production
Reaction temperature in process, not only energy-saving and emission-reduction, but also improve efficiency, reduce the pollution to environment.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalences of the invention
The modification of form falls within the application range as defined in the appended claims.
Embodiment 1
It using three kettle flow process of domestic autonomous innovation, uses EG titanium for catalyst, Titanium series catalyst is deployed into EG dilute
Solution, it is accurate convenient for metering into catalyst carrier, by continuous metering syringe pump by Titanium series catalyst distinguish metered shot to
Before esterifying kettle heat exchanger and precondensation kettle, the Ti content in Titanium series catalyst accounts for the 35ppm of polyester total amount, wherein anti-in esterification
The ratio that should be added with prepolymerization reaction is 1:9.Metered shot enters up flow type after ultraviolet light transforming agent, delustering agent are deployed by EG
Precondensation kettle, while entering storage tank after polyethylene glycol is heated and esterifying kettle is entered by measuring control valve and metered shot pump addition
To the Location Detection of Medium Transportation Pipeline of precondensation kettle, titanium dioxide delustering agent of the addition allotment in EG, additive amount is 0.3%wt finished product,
Ultraviolet light transforming agent is 2ppm, and using trimethyl phosphate as phosphorus system stabilizer, phosphorus content is the 15ppm of polyester.The catalysis of titanium system
Agent additive amount is 3ppm.Enter slurry preparation storage tank, the poly- second that molecular weight is 2000 after EG, PTA 1:1.05 allotment in molar ratio
Glycol always adds 6.5% that weight accounts for polyester total weight, and the bottom for being esterified outer cycle heat exchanger is quantitatively transferred to by slurry delivery pump
Portion, slurry enters esterifying kettle after being heated, and is constantly recycled using pressure difference, and esterification temperature is 265 DEG C, and esterification yield is greater than
96%, esterification pressures are less than 0.07MPa, are esterified side reaction water and part EG and other decomposition products and are discharged from kettle top, about total ester
Change liquid internal circulating load 10% provides up flow type prepolymerization kettle by delivery pump by valve, and esterifying liquid is further added after entering by heat exchanger
Heat carries out precondensation, and controlled at 270 DEG C, the pressure of prepolymerization reaction is 2000Pa, and water and part EG is discharged in tower top,
Prepolycondensate enters whole polycondensation vessel by potential difference, film is stirred and formed to condensation polymer by the Dropbox slowly rotated, further
Small molecule is discharged, reaction temperature is 280 DEG C, and the pressure of final polycondensation reaction is 60Pa, will be melted by the discharging pump of whole polycondensation vessel bottom
Body is delivered to spinning process, and the melt cooler being arranged on melt pipeline, will be due to high-pressure delivery and height similar to static mixer
The heat that the friction of viscosity molten mass generates is reduced by heat exchange method as far as possible, makes 282 DEG C of melt temperature into manifold,
The temperature of spinning manifold setting is 286 DEG C.Using the quenching wind facility dried from inside to outside, temperature of drying is controlled at 10 DEG C, and
The finish for spraying antistatic and Lubrication Composition composition, by spinneret spinneret that aperture is 0.4mm, cooling, traction, dragger
Traction pressure is set as 0.2bar, is then wound and arranges, and strand is introduced and contains silk cylinder.Spinning speed is 1250m/min.
It arranges and uses roll-type stretching-machine and collet hot roller anxiety thermal finalization facility, between first the second stretching-machine of stretching-machine
Using the bath of control water temperature, the first draw ratio is 3.22, and bath temperature is 60 DEG C, between third stretching-machine and the second stretching-machine
Using steam bath, the second draw ratio is 1.12, and the control of steam bath temperature is 130 DEG C.Silk piece is by nervous heat-setting equipment, setting
Temperature is 190 DEG C.Strand oils to silk piece surface using cooling, is then heated by tension regulator and steam, makes a piece
Into crimping machine, machine crimp is carried out to fiber, the temperature of machine crimp is 105 DEG C, and the silk piece after curling is using no-station pole canopy
Heat setting machine (hot-air) carries out laxation shaping to silk piece, and temperature is 70 DEG C.Then silk piece is introduced into cutting machine, and silk piece is cut into
Then required staple fiber becomes staple fiber product packet to staple fiber pressurized package by packing machine.
Embodiment 2
It using three kettle flow process of domestic autonomous innovation, uses EG titanium for catalyst, Titanium series catalyst is deployed into EG dilute
Solution, it is accurate convenient for metering into catalyst carrier, by continuous metering syringe pump by Titanium series catalyst distinguish metered shot to
Before esterifying kettle heat exchanger and precondensation kettle, the Ti content in Titanium series catalyst accounts for the 42ppm of polyester total amount, wherein anti-in esterification
The ratio that should be added with prepolymerization reaction is 1:1.Metered shot enters up flow type after ultraviolet light transforming agent, delustering agent are deployed by EG
Precondensation kettle, while entering storage tank after polyethylene glycol is heated and esterifying kettle is entered by measuring control valve and metered shot pump addition
To the Location Detection of Medium Transportation Pipeline of precondensation kettle.Titanium dioxide delustering agent of the addition allotment in EG, additive amount are 0.3%wt finished product,
Ultraviolet light transforming agent is 2.5ppm, and using trimethyl phosphate as phosphorus system stabilizer, phosphorus content is the 18ppm of polyester.Titanium system urges
Agent additive amount is 3ppm.Enter slurry preparation storage tank after EG, PTA 1:1.05 allotment in molar ratio, molecular weight be 3000 it is poly-
Ethylene glycol always adds 7% that weight accounts for polyester total weight, and the bottom for being esterified outer cycle heat exchanger is quantitatively transferred to by slurry delivery pump
Portion, slurry enters esterifying kettle after being heated, and is constantly recycled using pressure difference, and esterification temperature is 265 DEG C, and esterification yield is greater than
96%, esterification pressures are less than 0.07MPa, are esterified side reaction water and part EG and other decomposition products and are discharged from kettle top, about total ester
Change liquid internal circulating load 10% provides up flow type prepolymerization kettle by delivery pump by valve, and esterifying liquid is further added after entering by heat exchanger
Heat carries out precondensation, and controlled at 270 DEG C, the pressure of prepolymerization reaction is 2800Pa, and water and part EG is discharged in tower top,
Prepolycondensate enters whole polycondensation vessel by potential difference, film is stirred and formed to condensation polymer by the Dropbox slowly rotated, further
Small molecule is discharged, reaction temperature is 282 DEG C, and the pressure of final polycondensation reaction is 100Pa, will be melted by the discharging pump of whole polycondensation vessel bottom
Body is delivered to spinning process, and the melt cooler being arranged on melt pipeline, will be due to high-pressure delivery and height similar to static mixer
The heat that the friction of viscosity molten mass generates is reduced by heat exchange method as far as possible, makes 282 DEG C of melt temperature into manifold,
The temperature of spinning manifold setting is 286 DEG C.Using the quenching wind facility dried from inside to outside, temperature of drying is controlled at 12 DEG C, and
The finish for spraying antistatic and Lubrication Composition composition, by spinneret spinneret that aperture is 0.4mm, cooling, traction, dragger
Traction pressure is set as 0.3bar, is then wound and arranges, and strand is introduced and contains silk cylinder.Spinning speed is 1250m/min.
It arranges and uses roll-type stretching-machine and collet hot roller anxiety thermal finalization facility, between first the second stretching-machine of stretching-machine
Using the bath of control water temperature, the first draw ratio is 3.22, and bath temperature is 60 DEG C, between third stretching-machine and the second stretching-machine
Using steam bath, the second draw ratio is 1.12, and the control of steam bath temperature is 130 DEG C.Silk piece is by nervous heat-setting equipment, setting
Temperature is 190 DEG C.Strand oils to silk piece surface using cooling, is then heated by tension regulator and steam, makes a piece
Into crimping machine, machine crimp is carried out to fiber, the temperature of machine crimp is 105 DEG C, and the silk piece after curling is using no-station pole canopy
Heat setting machine (hot-air) carries out laxation shaping to silk piece, and temperature is 70 DEG C.Then silk piece is introduced into cutting machine, and silk piece is cut into
Then required staple fiber becomes staple fiber product packet to staple fiber pressurized package by packing machine.
Embodiment 3
It using three kettle flow process of domestic autonomous innovation, uses EG titanium for catalyst, Titanium series catalyst is deployed into EG dilute
Solution, it is accurate convenient for metering into catalyst carrier, by continuous metering syringe pump by Titanium series catalyst distinguish metered shot to
Before esterifying kettle heat exchanger and precondensation kettle, the Ti content in Titanium series catalyst accounts for the 50ppm of polyester total amount, wherein anti-in esterification
The ratio that should be added with prepolymerization reaction is 7:3.Metered shot enters up flow type after ultraviolet light transforming agent, delustering agent are deployed by EG
Precondensation kettle, while entering storage tank after polyethylene glycol is heated and esterifying kettle is entered by measuring control valve and metered shot pump addition
To the Location Detection of Medium Transportation Pipeline of precondensation kettle.Titanium dioxide delustering agent of the addition allotment in EG, additive amount are 0.3%wt finished product,
Ultraviolet light transforming agent is 3ppm, and using trimethyl phosphate as phosphorus system stabilizer, phosphorus content is the 20ppm of polyester.The catalysis of titanium system
Agent additive amount is 3ppm.Enter slurry preparation storage tank, the poly- second that molecular weight is 4000 after EG, PTA 1:1.05 allotment in molar ratio
Glycol always adds 7.5% that weight accounts for polyester total weight, and the bottom for being esterified outer cycle heat exchanger is quantitatively transferred to by slurry delivery pump
Portion, slurry enters esterifying kettle after being heated, and is constantly recycled using pressure difference, and esterification temperature is 265 DEG C, and esterification yield is greater than
96%, esterification pressures are less than 0.07MPa, are esterified side reaction water and part EG and other decomposition products and are discharged from kettle top, about total ester
Change liquid internal circulating load 10% provides up flow type prepolymerization kettle by delivery pump by valve, and esterifying liquid is further added after entering by heat exchanger
Heat carries out precondensation, and controlled at 270 DEG C, the pressure of prepolymerization reaction is 3300Pa, and water and part EG is discharged in tower top,
Prepolycondensate enters whole polycondensation vessel by potential difference, film is stirred and formed to condensation polymer by the Dropbox slowly rotated, further
Small molecule is discharged, reaction temperature is 285 DEG C, and the pressure of final polycondensation reaction is 130Pa, will be melted by the discharging pump of whole polycondensation vessel bottom
Body is delivered to spinning process, and the melt cooler being arranged on melt pipeline, will be due to high-pressure delivery and height similar to static mixer
The heat that the friction of viscosity molten mass generates is reduced by heat exchange method as far as possible, makes 282 DEG C of melt temperature into manifold,
The temperature of spinning manifold setting is 286 DEG C.Using the quenching wind facility dried from inside to outside, temperature of drying is controlled at 15 DEG C, and
The finish for spraying antistatic and Lubrication Composition composition, by spinneret spinneret that aperture is 0.4mm, cooling, traction, dragger
Traction pressure is set as 0.38bar, is then wound and arranges, and strand is introduced and contains silk cylinder.Spinning speed is 1250m/
min。
It arranges and uses roll-type stretching-machine and collet hot roller anxiety thermal finalization facility, between first the second stretching-machine of stretching-machine
Using the bath of control water temperature, the first draw ratio is 3.22, and bath temperature is 60 DEG C, between third stretching-machine and the second stretching-machine
Using steam bath, the second draw ratio is 1.12, and the control of steam bath temperature is 130 DEG C.Silk piece is by nervous heat-setting equipment, setting
Temperature is 190 DEG C.Strand oils to silk piece surface using cooling, is then heated by tension regulator and steam, makes a piece
Into crimping machine, machine crimp is carried out to fiber, the temperature of machine crimp is 105 DEG C, and the silk piece after curling is using no-station pole canopy
Heat setting machine (hot-air) carries out laxation shaping to silk piece, and temperature is 70 DEG C.Then silk piece is introduced into cutting machine, and silk piece is cut into
Then required staple fiber becomes staple fiber product packet to staple fiber pressurized package by packing machine.
Comparative example
340 ton per day of the polyester daily output uses EG antimony for catalyst, by EG tune using three kettle flow process of domestic autonomous innovation
It is assigned to catalyst carrier, according to target 270ppm ladder element final products additive amount.The titanium dioxide deployed in EG is added simultaneously
Delustering agent, additive amount are 0.3%wt finished product and heat stabilizer trimethyl phosphate, 30ppm.Up flow type is continuously injected to by syringe pump
Precondensation kettle enters storage tank and enters esterifying kettle to pre- by measuring control valve and metered shot pump addition after heating polyethylene glycol
On the Location Detection of Medium Transportation Pipeline of polycondensation vessel, EG, PTA enter slurry preparation storage tank after deploying in proportion, quantitative defeated by slurry delivery pump
It send to outer cycle exchanger base is esterified, slurry enters esterifying kettle after being heated, and is constantly recycled using pressure difference, is esterified
Temperature is 272 DEG C, and esterification yield is greater than 96%, is esterified side reaction water and part EG and other decomposition products and is discharged from kettle top, about always
The 10% of esterifying liquid internal circulating load provides up flow type prepolymerization kettle by delivery pump by valve, and the polyethylene glycol that molecular weight is 4000 always adds
Add weight accounts for the 4% of polyester total weight, and esterifying liquid is further heated after entering by heat exchanger, carries out precondensation, controlled at
275 DEG C, tower top discharge water and part EG, prepolycondensate enter whole polycondensation vessel by potential difference, by the Dropbox that slowly rotates to polycondensation
Object is stirred and is formed film, small molecule is further discharged, reaction temperature is 285 DEG C, by the discharging pump of whole polycondensation vessel bottom
By melt conveying to spinning process, the melt cooler being arranged on melt pipeline, will be due to high-pressure delivery similar to static mixer
The heat generated with the friction of high viscosity molten mass is reduced by heat exchange method as far as possible, and the temperature of spinning manifold setting is 285 DEG C.
Using the quenching wind facility dried from inside to outside, temperature of drying control sprays antistatic and Lubrication Composition composition at 24 DEG C
Finish, the traction pressure by aperture for the spinneret spinneret of 0.4mm, cooling, traction, dragger are set as 0.3bar, then
It is wound and arranges, strand is introduced and contains silk cylinder.Spinning speed is 1250m/min.
It arranges and uses roll-type stretching-machine and collet hot roller anxiety thermal finalization facility, between first the second stretching-machine of stretching-machine
Using the bath of control water temperature, the first draw ratio is 3.22, and bath temperature is 60 DEG C, between third stretching-machine and the second stretching-machine
Using steam bath, the second draw ratio is 1.12, and the control of steam bath temperature is 130 DEG C.Silk piece passes through the anxiety of 18 rollers composition
Heat-setting equipment, set temperature are 195 DEG C.Strand oils to silk piece surface using cooling, then by tension regulator and
Steam heating, makes a piece enter crimping machine, carries out machine crimp to fiber, the temperature of machine crimp is 105 DEG C, the silk after curling
Piece carries out laxation shaping to silk piece using no-station pole canopy heat setting machine (hot-air), and temperature is 90 DEG C.Then silk piece, which is introduced into, cuts
Silk piece is cut into required staple fiber by off line, then becomes staple fiber product packet to staple fiber pressurized package by packing machine.
The product of embodiment 1-3 and comparative example are tested, main preparation condition and test result are shown in Table 1.
Water absorption rate calculation: taking the sample not less than 1.0g, weighs after standard laboratory places balance 24 hours, essence
Really to 0.01g, it is sample original weight A, test is immersed in pure water 60 seconds, error is taken out after being no more than 1 second, and suspension is dripped
120 seconds, error was weighed after being no more than 3 seconds, as the sample weight B after water suction.Water absorption rate=(B/A -1) × 100%.
It is available to draw a conclusion after the result of embodiment 1-3 and comparative example shown in the comparison sheet 1:
1, the PET polyester synthesis of embodiment 1 to 3 and comparative example is likely to that the temperature of polymerization reaction is allowed to decline, and adds in esterification
The cooling effect of partial catalyst is more preferable, and polyester energy-saving effect is obvious, and is low temperature (opposite) spinning, reduces thermal degradation, improves
Fiber, which obtains physical mechanical property, positive acting.
2, the use of Titanium series catalyst provides good basis for the spinning temperature reduction of direct fabrics, so that fiber quality
Uniformly, production run efficiency improves, but also production process is more environmentally friendly.
3, replace the viscose glue in production process with PET, the polyethylene glycol additive amount that molecular weight is 2000-4000 is controlled 7%
Left and right, not only improves hydrophilic effect, but also reduce costs.
Claims (6)
1. high hydrophilic no antimony spun lacing dedicated fiber manufacturing method, step include the esterification of polyester pulp, precondensation, final minification it is poly-,
Spinning and final finishing, it is characterised in that: terephthalic acid (TPA) and excessive ethylene glycol are first esterified poly- pair that preshrunk is polymerized to low polymerization degree
Ethylene terephthalate is continuously added into Titanium series catalyst into reactant in esterification reaction process, after polyethylene glycol is heated
Enter on esterifying kettle to the Location Detection of Medium Transportation Pipeline of precondensation kettle into storage tank and by measuring control valve and metered shot pump addition,
Ultraviolet light transforming agent, phosphorus system stabilizer, delustering agent and Titanium series catalyst are continuously added into during precondensation；Then final minification is polymerized to height
The final polyester product of the degree of polymerization；Molten mass enters manifold after heat exchange heats up, through spinneret, cooling, traction, winding and whole
Reason, high hydrophilic no antimony spun lacing dedicated fiber.
2. the hydrophilic no antimony spun lacing dedicated fiber manufacturing method of height according to claim 1, it is characterised in that: the titanium system urges
Agent, ultraviolet light transforming agent, phosphorus system stabilizer and delustering agent are added in the mode deployed in ethylene glycol.
3. the hydrophilic no antimony spun lacing dedicated fiber manufacturing method of height according to claim 1, it is characterised in that: the poly- second two
Alcohol, molecular weight 2000-4000, total 6.5%-7.5% for adding weight and accounting for polyester total weight.
4. the hydrophilic no antimony spun lacing dedicated fiber manufacturing method of height according to claim 1, it is characterised in that: the titanium system urges
Ti content in agent accounts for 35~50ppm of polyester total amount, the ratio that esterification and prepolymerization reaction add be 1:9~
7:3；Ultraviolet light transforming agent accounts for 2~3ppm of total amount in polyester, and phosphorus system stabilizer accounts for 15~20ppm of total amount in polyester；It is described
Titanium series catalyst is titanate ester compound.
5. the hydrophilic no antimony spun lacing dedicated fiber manufacturing method of height according to claim 1, it is characterised in that: precondensation temperature
270 DEG C are set as with pressure, 2000~3300Pa；The poly- temperature and pressure setting of final minification are as follows: 280~285 DEG C, 60~130Pa.
6. the hydrophilic no antimony spun lacing dedicated fiber manufacturing method of height according to claim 1, it is characterised in that: in spinning process
Use aperture for the spinneret of 0.4mm；Cooling wind temperature is set as 10~15 DEG C；The traction pressure of dragger is set as 0.2~
0.38bar；Spinning winding speed is set as 1250m/min.
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Cited By (1)
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| CN111850721A (en) * | 2020-08-11 | 2020-10-30 | 江苏华西村股份有限公司 | Special short fiber production line for high-cleanness spunlace non-woven fabric |
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Application publication date: 20190212 |