CN102242431B - Preparation method of polyphenylene sulfide (PPS) air-textured yarn (ATY) - Google Patents
Preparation method of polyphenylene sulfide (PPS) air-textured yarn (ATY) Download PDFInfo
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Abstract
The invention relates to a preparation method of a polyphenylene sulfide (PPS) air-textured yarn (ATY). The preparation method comprises the following steps: firstly hot-drawing PPS-DT (draw textured) fiber; after the hot-drawn fiber is cooled, air-texturing to generate a large quantity of silk loops and knot points, and then forming PPS-DT-ATY; heat-setting the PPS-DT-ATY by utilizing a heat-setting box with a heating medium (diphenyl-diphenyl ether); dipping the heat-set PPS-DT-ATY with an oil roller; and finally winding the dipped PPS-DT-ATY into a PPS-DT-ATY bobbin. The preparation methodhas the advantages of advanced process, full and accurate parameters, high safety, high stability and high reliability, thus being an ideal method for preparing the ATY; and the obtained PPS-DT-ATY has the advantages of uniform fineness (600-1200dtex), stable mechanical properties, high tensile strength at break (up to over 2.8CN/dtx), improved strength by over 20% compared with shorter fiber, uniform thickness, high elongation (up to 23%), low boiling water shrinkage (0.8%) and low dry heat shrinkage (4.2%), and the PPS-DT-ATY can be woven into a plurality of high-strength fabrics.
Description
Technical field
The present invention relates to a kind of preparation method of polyphenylene sulfide AIRJET TEXTURING YARN, the technical field that belongs to differential high performance fibre material preparation and use.
Background technology
Polyphenylene sulfide fibre is called for short the PPS fiber, has very high heat endurance, chemical resistance, anti-flammability, insulating properties and good mechanical property, is a kind of high-performance fiber; Its textiles is widely applied in fields such as chemical industry, metallurgy, automobile, Aero-Space, building materials, environmental protection, is China at one of main raw material(s) of the high-temperature tail gas dedusting filtering bag of the industries such as thermal power generation, cement, waste incineration.
Yet the Nomex that this filter bag adopts PPS staple fibre and long filament composite for base fabric to form more, at high temperature and containing in the dust removal process of number of chemical impurity, initial operating mode is good, but along with increasing progressively of service time, peel off deleterious between PPS wire short fiber and dust, it is the filtering surface that dust is attached to dust arrester, when filter bag during by blow-back, higher air pressure makes the staple fibre slippage, form conglomeration, not only affect filter effect, and the amount of cooling down increases, strengthen production cost, therefore the silk thread structure of PPS fiber has become the key of filter bag fabric.
Summary of the invention
Goal of the invention
The objective of the invention is the situation for background technology, adopt the PPS long filament of thicker filament number, by hot-stretch, cooling, air-texturing, HEAT SETTING complex technique, make smooth surface, PPS precursor that fibre gap is little change its appearance structure, form a kind of bar plentiful, more network node is arranged and can hold absorption, catch the looped pile textured filament of dust particle, to increase the PPS filter
The filter area of bag improves interception and catches the dust ability, increases hard and soft property and the intensity of PPS fiber, make filter bag when the gases at high pressure blowback, dust is easy to from fiber spin-off, and not slippage of fiber, stop clustering phenomena, effectively improve filter effect and the service life of filter bag.
Technical scheme
The chemical substance material that the present invention uses is: PPS-DT fiber, deionized water, finish, compressed air, biphenyl Biphenyl Ether, and its combination consumption and quality requirement are as follows:
PPS-DT fiber: fiber number 200-400dtex 720g ± 5g/ hr ingot
Single fiber fiber number: 6.0-8.0 dtex
Deionized water: H
2The liquid liquid of O, 99.0% 0.6-1.0 L/ hr ingot
Finish: the liquid liquid of white oil+fatty alcohol phosphate+sodium alkyl sulfonate, 30-60g/ hr ingot
Compressed air: gaseous state gas, relative humidity≤40%, 25 ℃ of temperature, cleanliness factor 99.0% pressure 0.6-0.9Mpa 7-9 Nm
3/ hr ingot
Biphenyl Biphenyl Ether: C
6H
5-C
6H
4OC
6H
4-C
6H
550000-70000g
(1) preparation PPS AIRJET TEXTURING YARN
Divide the five steps zone to carry out: I drawing zone, II cooling zone, III deformed area, IV shaping area, V winding zone;
1.. the drawing zone I
Two strands of PPS-DT fibers are introduced roller by seal wire spare, deliver to sub-wire rotor and hot-stretch coiling 3-4 circles, enter seal wire spare through roller, then distinguish the rubber enclosed of pressing roller, the PPS-DT fiber is compressed, speed difference PPS-DT fiber by two groups of rollers is stretched, draw ratio is 1.1-1.4 times, and heating-up temperature is 120-130 ℃, then enters hot plate, 230-240 ℃ of lower HEAT SETTING, draw ratio is 1.1 times;
2. cooling zone II
PPS-DT fibre bundle after the stretching naturally cools to 25 ℃ in air;
3. deformed area III
The PPS-DT fiber is by roller, seal wire spare imports the distortion case, remove the finish on the silk and use water infiltration through deionized water, reduce the fibre bundle surface temperature, then penetrate the filament inlet of texturing jet, open the compressed air valve, fibre bundle is blown open under supersonic speed 600-700 m/s airflow function, blow unrest, make the parallel separation of monofilament, and irregular movement and revolution in disorder, when leaving the outlet of nozzle silk road, 90 ° of tow turnovers, the effect of in addition blocking, strand is expanded rapidly, the monofilament relative displacement, crooked, dislocation and entanglement, form a large amount of wire ring and network node, form the PPS AIRJET TEXTURING YARN, i.e. the PPS-DT-ATY textured filament;
Compressed air pressure in the step is 0.6-0.9Mpa, and the over feed rate(OFR) of feeding fibre bundle is 25-40%, jet expansion with block between distance be 3-7mm, wire vent speed is 200-400m/min;
4. shaping area IV
PPS-DT-ATY imports heat-setting box through roller, pass through molecular thermalmotion, eliminate internal stress, improve stability, molecule segment moves, piles up simultaneously, further improves the degree of crystallinity of PPS-DT-ATY, increase fiber modulus, through roller and seal wire spare commutate to oiling roller to the textured filament oil agent, improve coherent, reduce static; Setting temperature in the step is 220-240 ℃, and poor hello the rate of typing is-1～8%, and the textured filament oil content is 4% ± 0.5%;
5. winding zone V
After oiling, PPS-DT-ATY enters the drum mechanism built package through seal wire spare and becomes the silk cylinder, and the coiling over feed rate(OFR) in the step is 1-4.5%, and the number of times that traverses is 150-270 times/min, becomes after reeling: PPS-DT-ATY silk cylinder;
(3) detect, analyze, characterize
Pattern, structure, mechanical property, the stability of PPS-DT-ATY textured filament to preparation detects, analyzes, characterizes;
Carry out the fiber morphology analysis with high power fiber projecting apparatus;
Carry out fibril aggregation attitude structure degree of crystallinity and degree of orientation analysis and characterization with differential scanning calorimeter, sound velocimeter;
Carry out the fibrous mechanical property test with the semi-automatic instrument of stretching by force;
Carry out the stability of fiber test analysis with thread yarn horizontal metroscope, electric heating air blast thermostatic drying chamber, electric furnace and heating kettle, weight, vertical admeasuring apparatus;
(4) product stores
PPS-DT-ATY textured filament silk cylinder to preparation is stored in drying, cool place, clean environment, waterproof, protection against the tide, sun-proof, anti-acid-alkali salt to corrode 20 ℃ ± 2 ℃ of storage temperatures, relative humidity≤10%.
Beneficial effect
The present invention compares with background technology has obvious advance, the PPS-DT-ATY AIRJET TEXTURING YARN is a kind of long filament, have plentiful, fluffy, stable wire ring, instability can be controlled in 0-1.5%, there is irregular wire ring the fiber outside, wire ring can hold a large amount of powder dust particles, its fracture strength is 2.873cN/dtex, elongation at break reaches 23%, and wire ring is hard and soft to develop simultaneously, when gases at high pressure blowback filter bag, fiber can bear the pressure of 0.5-0.6 Mpa, can keep higher intensity and toughness, not easy fracture, conglomeration, and dust is easy to peel off fiber, filter effect and the service life of filter bag have effectively been improved, this fiber can also be used for multiple high strength textiles, and this process is rationally advanced, and safety and stability is reliable, the PPS-DT-ATY fiber number is even, boiling water shrinkage is 0.8%, and dry-hot shrinkage is 4.2%, is the very good method for preparing the PPS-DT-ATY textured filament.
Description of drawings
Fig. 1 is that the PPS-DT fiber prepares PPS-DT-ATY textured filament process chart
Fig. 2 is the state diagram of distortion carton deformed
Fig. 3 is distortion mouth structure figure
Fig. 4 is the K-K profile of Fig. 3
Fig. 5 is heat setting oven setting state diagram
Fig. 6 is the PPS-DT-ATY shape appearance figure
Fig. 7 is PPS-DT-ATY AIRJET TEXTURING YARN stress strain curve figure
Fig. 8 is that HEAT SETTING is to PPS-DT-ATY degree of crystallinity influence curve figure
Fig. 9 is that HEAT SETTING affects figure to the PPS-DT-ATY shrinkage factor
Figure 10 is that HEAT SETTING affects figure to the PPS-DT-ATY fracture strength
Shown in the figure, list of numerals is as follows:
1. a PPS-DT fiber spool, 2. the 2nd PPS-DT fiber spool, 3. the first seal wire spare, 4. first roller, 5. sub-wire rotor, 6. heat dish, 7. the second roller, 8. hot plate, 9. the 3rd roller, 10. the 4th roller, 11. second seal wire spares, 12. distortion casees, 13. the 5th roller, 14. the 3rd seal wire spares, 15. heat setting ovens, 16. the 4th seal wire spare, 17. the 6th rollers, 18. the 5th seal wire spares, 19. oiling roller, 20. the 6th seal wire spares, 21. curled hair cylinders, 22. textured filament, 23. air compressors, 24. air accumulators, 25. texturing jet, the PPS-DT silk after 26. stretchings, 27. air cavitys, 28. air flue, 30. nozzle carriers, 31. distortion casees advance the silk mouth, 32. water nozzle, 33. water valves, 34. water tanks, 35. initial set silk, 36. nozzles advance silk mouth, 37. nozzle filament mouths, the seat 38. block, 39. gear pompons, 40. distortion case filament mouths, 41. heat setting oven advances silk mouth, 42. steam vents, 43. fiber tubes, 44. liquid phase biphenyl Biphenyl Ether, 45. electrically heated rods, 46. heat-setting box filament mouths.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing:
Shown in Figure 1, be PPS-DT-ATY AIRJET TEXTURING YARN preparation flow figure, each position, each process island, annexation want correct, according to quantity proportioning, according to the order of sequence operation.
The value of the chemical substance that preparation is used and technical parameter are to determine by the scope that sets in advance, take dtex, Grams Per Hour ingot, l/h ingot, cube m/h ingot as measurement unit.
The hot-stretch temperature is high in the described PPS drawing of fiber process, pass through the cooling zone, can reduce PPS long filament temperature, gas flow temperature decline in the nozzle when making distortion, the air viscosity reduces, in the PPS long filament, with relative displacement and the interlacing looping of raising monofilament, and then improve deformation effect with larger aerodynamic effect.
Shown in Figure 2, be air texturing box deformation state figure, each position, connecting relation want correct, install firmly.
Described PPS-DT-ATY textured filament preparation minute five process island are carried out, and the I district is drawing zone, and the II district is the cooling zone, and the III district is the deformed area, and the IV district is shaping area, and the V district is the winding zone; PPS-DT filamental thread cylinder is two, arrange about minute, the one PPS-DT fiber spool 1, the 2nd PPS-DT fiber spool 2 enters the first seal wire spare 3 in I district simultaneously, then enter first roller 4, sub-wire rotor 5, heat dish 6, the second roller 7, hot plate 8, after heating 230-240 ℃, hot plate 8 enters the 3rd roller 9 of cooling zone II, the 4th roller 10, the second seal wire spare 11, through distortion case 12 deformation process, form PPS-DT-ATY 22, then enter the 4th seal wire spare 16 of setting zone IV, the 6th roller 17, the 5th seal wire spare 18, oiling roller 19, after oiling, oiling roller enters the 6th seal wire spare 20 of winding zone V, curled hair cylinder 21, PPS-DT-ATY 22.
Described PPS-DT-ATY textured filament is in air-texturing jet 25 interior formation, the compressed air pressure of air compressor preparation is regulated according to fibre number, the thicker pressure of fiber is higher, in view of the single fiber number of PPS-DT long filament of the present invention thicker, required compressed air pressure will be controlled at 0.6-0.9MPa ± 0.01Mpa, otherwise will affect the tow dither, directly worsen deformation velocity and effect; There are 28, three strands of air-flows of three high pressure air flues to compile in the texturing jet 25 and produce strong turbulent flow, dispel tow, and its wave is travelled forward, produce shock wave at nozzle exit owing to pressure is lower than outside pressure, tow is continued fluffy, produce slippage and crooked looping; Blocking in addition will be controlled at 3-7mm with the jet expansion spacing, with improve wire ring number that long filament forms under the jet-stream wind effect and uniformity and firmly entanglement count; Spacing is less than 3mm, and deformation effect is not good, and unstable greater than the 7mm air-flow, the strand network node is unstable, and wire ring easily is opened.
Shown in Fig. 3,4, be the texturing jet structure chart, each position, air flue are unimpeded, 28, three air flues of three air flues 28 and tracheae 51, gas tank 24, air compressor machine 23 UNICOMs that air cavity 27 UNICOMs in the nozzle 25 are uniform.
Shown in Figure 5, be heat-setting box configuration state figure, each position, connecting relation want correct.
Described PPS-DT-ATY textured filament is finalized in heat-setting box, and to improve its stability, wherein PPS-DT-ATY passes stainless steel tube and managed outer biphenyl-biphenyl ether mixed liquor heating, and thermal source is the electrical bar of bottom.
Heat setting oven 15 is rectangle, the upper end is for advancing silk mouth 41, to inner UNICOM fiber tube 43, outside UNICOM filament mouth 46, be furnished with liquid phase biphenyl Biphenyl Ether 44 in the heat setting oven 15, electrical bar 45 passes heat setting oven 15 and stretches in biphenyl Biphenyl Ether 44 liquid, and PPS-DT-ATY silk 35 penetrates fiber tube 43 by advancing silk mouth 41, passed by filament mouth 46, namely finished the HEAT SETTING of silk.
Shown in Figure 6, be PPS-DT-ATY textured filament shape appearance figure, among the figure as can be known: textured filament is the long filament shape, and the strand surface has plentiful wire ring to arrange.
Shown in Figure 7, be PPS-DT-ATY textured filament stress strain curve figure, among the figure as can be known: the textured filament orientation factor is directly proportional with draw ratio.
Shown in Figure 8, for HEAT SETTING to PPS-DT-ATY textured filament degree of crystallinity influence curve figure, among the figure as can be known: be directly proportional with heat setting temperature at 225-240 ℃ of temperature range intercrystalline degree.
Shown in Figure 9, for HEAT SETTING to PPS-DT-ATY textured filament shrinkage factor striograph, among the figure as can be known: fracture strength changes with heat setting temperature.
Shown in Figure 10, for HEAT SETTING to PPS-DT-ATY textured filament fracture strength striograph, among the figure as can be known: in draw ratio 1.0-1.1 scope, fracture strength improves, and elongation at break reduces; In draw ratio 1.1-1.4 scope, fracture strength and elongation at break all improve; In draw ratio 1.4-1.5 scope, fracture strength reduces, and elongation at break improves.
Claims (5)
1. the preparation method of a polyphenylene sulfide AIRJET TEXTURING YARN, it is characterized in that: the chemical substance material of use is: PPS-DT fiber, deionized water, finish, compressed air, biphenyl Biphenyl Ether, its combination consumption and quality requirement are as follows:
PPS-DT fiber: fiber number 200-400dtex 720g ± 5g/ hr ingot
Single fiber fiber number: 6.0-8.0 dtex
Deionized water: H
2The liquid liquid of O, 99.0% 0.6-1.0 L/ hr ingot
Finish: the liquid liquid of white oil+fatty alcohol phosphate+sodium alkyl sulfonate, 30-60g/ hr ingot
Compressed air: gaseous state gas, relative humidity≤40%, 25 ℃ of temperature, cleanliness factor 99.0% pressure 0.6-0.9Mpa 7-9 Nm
3/ hr ingot
Biphenyl Biphenyl Ether: C
6H
5-C
6H
4OC
6H
4-C
6H
550000-70000g
(1) preparation PPS AIRJET TEXTURING YARN
Divide the five steps zone to carry out: I drawing zone, II cooling zone, III deformed area, IV shaping area, V winding zone;
1.. the drawing zone I
Two strands of PPS-DT fibers are introduced roller by seal wire spare, deliver to sub-wire rotor and hot-stretch coiling 3-4 circles, enter seal wire spare through roller, then distinguish the rubber enclosed of pressing roller, the PPS-DT fiber is compressed, speed difference PPS-DT fiber by two groups of rollers is stretched, draw ratio is 1.1-1.4 times, and heating-up temperature is 120-130 ℃, then enters hot plate, 230-240 ℃ of lower HEAT SETTING, draw ratio is 1.1 times;
2. cooling zone II
PPS-DT fibre bundle after the stretching naturally cools to 25 ℃ in air;
3. deformed area III
The PPS-DT fiber is by roller, seal wire spare imports the distortion case, remove the finish on the silk and use water infiltration through deionized water, reduce the fibre bundle surface temperature, then penetrate the filament inlet of texturing jet, open the compressed air valve, fibre bundle is blown open under supersonic speed 600-700 m/s airflow function, blow unrest, make the parallel separation of monofilament, and irregular movement and revolution in disorder, when leaving the outlet of nozzle silk road, 90 ° of tow turnovers, the effect of in addition blocking, strand is expanded rapidly, the monofilament relative displacement, crooked, dislocation and entanglement, form a large amount of wire ring and network node, form the PPS AIRJET TEXTURING YARN, i.e. the PPS-DT-ATY textured filament;
Compressed air pressure in the step is 0.6-0.9Mpa, and the over feed rate(OFR) of feeding fibre bundle is 25-40%, jet expansion with block between distance be 3-7mm, wire vent speed is 200-400m/min;
4. shaping area IV
PPS-DT-ATY imports heat-setting box through roller, pass through molecular thermalmotion, eliminate internal stress, improve stability, molecule segment moves, piles up simultaneously, further improves the degree of crystallinity of PPS-DT-ATY, increase fiber modulus, through roller and seal wire spare commutate to oiling roller to the textured filament oil agent, improve coherent, reduce static; Setting temperature in the step is 220-240 ℃, and poor hello the rate of typing is-1～8%, and the textured filament oil content is 4% ± 0.5%;
5. winding zone V
After oiling, PPS-DT-ATY enters the drum mechanism built package through seal wire spare and becomes the silk cylinder, and the coiling over feed rate(OFR) in the step is 1-4.5%, and the number of times that traverses is 150-270 times/min, becomes after reeling: PPS-DT-ATY silk cylinder;
(3) detect, analyze, characterize
Pattern, structure, mechanical property, the stability of PPS-DT-ATY textured filament to preparation detects, analyzes, characterizes;
Carry out the fiber morphology analysis with high power fiber projecting apparatus;
Carry out fibril aggregation attitude structure degree of crystallinity and degree of orientation analysis and characterization with differential scanning calorimeter, sound velocimeter;
Carry out the fibrous mechanical property test with the semi-automatic instrument of stretching by force;
Carry out the stability of fiber test analysis with thread yarn horizontal metroscope, electric heating air blast thermostatic drying chamber, electric furnace and heating kettle, weight, vertical admeasuring apparatus;
(4) product stores
PPS-DT-ATY textured filament silk cylinder to preparation is stored in drying, cool place, clean environment, waterproof, protection against the tide, sun-proof, anti-acid-alkali salt to corrode 20 ℃ ± 2 ℃ of storage temperatures, relative humidity≤10%.
2. the preparation method of a kind of polyphenylene sulfide AIRJET TEXTURING YARN according to claim 1, it is characterized in that: the preparation of described PPS-DT-ATY textured filament divides five process island to carry out, and the I district is drawing zone, the II district is the cooling zone, the III district is the deformed area, and the IV district is shaping area, and the V district is the winding zone; PPS-DT filamental thread cylinder is two, arrange about minute, the one PPS-DT fiber spool (1), the 2nd PPS-DT fiber spool (2) enters the first seal wire spare (3) in I district simultaneously, then enter first roller (4), sub-wire rotor (5), heat dish (6), the second roller (7), hot plate (8), after heating 230-240 ℃, hot plate (8) enters the 3rd roller (9) of cooling zone II, the 4th roller (10), the second seal wire spare (11), through distortion case (12) deformation process, form PPS-DT-ATY fiber (22), then enter the 4th seal wire spare (16) of shaping area IV, the 6th roller (17), the 5th seal wire spare (18), oiling roller (19), after oiling, oiling roller enters the 6th seal wire spare (20) of winding zone V, curled hair cylinder (21), PPS-DT-ATY textured filament (22).
3. the preparation method of a kind of polyphenylene sulfide AIRJET TEXTURING YARN according to claim 1, it is characterized in that: the hot-stretch temperature is higher in the described PPS-DT drawing of fiber process, pass through the cooling zone, reduce PPS-DT long filament temperature, make that gas flow temperature descends in when distortion nozzle, the air viscosity reduces, with larger aerodynamic effect in the PPS-DT long filament, improve relative displacement, interlacing and the looping of monofilament, and then improve deformation effect.
4. the preparation method of a kind of polyphenylene sulfide AIRJET TEXTURING YARN according to claim 1, it is characterized in that: described distortion case is rectangular box, the upper left quarter of distortion case (11) is for advancing silk mouthful (31), PPS-DT silk (26) mouthful is introduced in the water nozzle (32) in the casing by advancing silk, and by the flow of water valve (33) control water tank (34), then the PPS-DT silk advances silk mouthful (36) by nozzle and enters in the air-texturing jet (25), nozzle (25) UNICOM's tracheae (51), gas tank (24), air compressor (23), the right outside section of nozzle (25) is provided with the seat (38) of blocking, gear pompon (39), through texturing jet (25), block (39) enter distortion case filament mouth (40) and derive, be i.e. PPS-DT-ATY(35).
5. the preparation method of a kind of polyphenylene sulfide AIRJET TEXTURING YARN according to claim 1, it is characterized in that: described its fracture strength of PPS-DT-ATY textured filament is 2.873cN/dtex, and elongation at break is 23%.
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| CN104975394A (en) * | 2015-07-13 | 2015-10-14 | 苏州华良化纤纺织有限公司 | Stretch yarn knot generator |
| EP3358052B1 (en) * | 2017-02-01 | 2020-05-27 | Oerlikon Textile GmbH & Co. KG | Device for entangling a plurality of individual filaments of a composite yarn |
| CN107700030A (en) * | 2017-10-26 | 2018-02-16 | 董坚强 | A kind of production method of the compound silk fabrics of fine denier polyester elastic polyurethane fiber |
| CN109371518A (en) * | 2018-11-17 | 2019-02-22 | 江苏纵横优仪人造草坪有限公司 | Artificial grass filaments wire drawing machine equality of temperature is same to press hot air system |
| CN109732807B (en) * | 2019-02-27 | 2023-06-20 | 南京特塑复合材料有限公司 | Elliptical impregnating device with continuous fibers in multiple motion states |
| CN111560674B (en) * | 2020-04-24 | 2022-12-27 | 江苏欣战江纤维科技股份有限公司 | Preparation method of outdoor pre-spinning coloring regenerated ATY (atom transfer Y) fiber with high filling power |
| CN115353285B (en) * | 2022-08-29 | 2023-08-08 | 启东育锋新材料科技有限公司 | Automatic drawing device for glass fiber yarn |
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