CN105544001A - Method for directly preparing PPS (polyphenylene sulfide) modified short fibers through modification of PPS powder - Google Patents
Method for directly preparing PPS (polyphenylene sulfide) modified short fibers through modification of PPS powder Download PDFInfo
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- CN105544001A CN105544001A CN201610114048.4A CN201610114048A CN105544001A CN 105544001 A CN105544001 A CN 105544001A CN 201610114048 A CN201610114048 A CN 201610114048A CN 105544001 A CN105544001 A CN 105544001A
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- polyphenylene sulfide
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- 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
- D01F6/94—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 other polycondensation products
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- 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
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- 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
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- 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
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Abstract
The invention provides a method for directly preparing PPS (polyphenylene sulfide) modified short fibers through modification of PPS powder and belongs to the field of preparation of special type modified fibers with high performance. The method comprises steps as follows: 96%-98.5% of the PPS powder and 1.5%-4% of a modifying agent are introduced into a screw extruder and are fused, PPS modified melts are obtained and extruded into a homogenizing kettle, a solvent and low-molecular volatile matters in the PPS modified melts entering the homogenizing kettle are sucked and removed by the homogenizing kettle, the PPS modified melts are subjected to homogenizing mixing and then are sent to a filter through a melt pump, the PPS modified melts are subjected to impurity removal and filtering by the filter, metered by a metering pump and introduced into a spinning box for spinning, filaments sprayed from spinneret orifices in a spinneret plate are sequentially subjected to cooling by circular air blow, oiling by an oiling roller, drafting, setting by a heat-setting machine, crimping, relaxation setting by a relaxation setting machine, cutting-off and packaging, and the PPS modified short fibers are obtained. According to the method, the preparation procedure is shortened, the equipment configuration is simplified, the preparation efficiency is improved, the cost is reduced, the energy consumption is reduced, and quality consistency is guaranteed.
Description
Technical field
The invention belongs to high-performance special modified fibre preparing technical field, be specifically related to the method that polyphenylene sulfide modification short fiber is directly prepared in the modification of a kind of polyphenylene sulfide powder.
Background technology
The English full name of aforesaid polyphenylene sulfide is: PolyphenyleneSulfide(is called for short PPS).Aforesaid polyphenylene sulfide modification short fiber is polyphenylene sulfide modified short fiber or staple fiber (as follows).Polyphenylene sulfide fibre is taken the lead in succeeding in developing by U.S.'s Philips (Philip) oil company, and the said firm achieved the suitability for industrialized production of PPS resin in 1973, within 1979, develops the PPS resin of fibre-grade, the industrialization of nineteen eighty-three PPS staple fibre.Because polyphenylene sulfide fibre has excellent serviceability, thus receive the concern of people, Japanese Japan spun, beautiful, the Supreme Being people in east and Bayer A.G also in succession development and production go out polyphenylene sulfide fibre.
Polyphenylene sulfide can be made into long filament and staple fibre, because it has good textile process performance (i.e. spinnability) and excellent chemical resistance, heat endurance, heat-resisting quantity and anti-flammability, thus be widely used, as dry zone, Nomex in corrosion-resistant filter cloth, paper industry and the electrical industry in steam power plant's coal-burning boiler, waste incineration, cement plant high-temperature flue filter bag, chemical industry in environmental protection, flue and the field such as chemical industry high temperature filtration and Aero-Space; Special cable cladding; Flame-retardant textile in aerospace industry etc.But due to PPS fiber not resistance to oxidation, the oxidation resistent susceptibility thus how improving PPS fiber has become the focus of current concern.
The production of polyphony thioether short fiber generally adopts known three-step approach, if need modification, at least also wants three steps just can complete.The first step: PPS granulation for powders is formed PPS pellet; Second step: melt extruded by screw extruder after first pellet drying being dewatered, then enter manifold melt spinning, on-line velocity is winding falling-barrel under the spinning speed of 500-900m/min; 3rd step: by the tow boundling of some barrels, successively through drawing-off, curling, sizing, cut off and packing, obtain polyphenylene sulfide short fiber.
From the technological process of above-mentioned three-step approach, because the modification granulation of PPS powder and drying dewater by needs, spinning separates with drawing-off, and draft speed space that is slow, that take Workplace is large, link is many, Repeat-heating, cooling, thus not only process procedure is many, energy consumption is large, efficiency is low, the stability of short fiber (homogeneity of quality) is poor, and preparation cost is high, and such as drying equipment requires that story height even needs to adopt nitrogen as drying medium.
The TECHNICAL INFORMATION SOURCES of the preparation method of polyphenylene sulfide short fiber can be seen in disclosed Chinese patent literature, as publication number CN101187070A recommendation has " polyphenylene sulfide short fibre one-step method complete equipment and production method ", this patent application scheme teaches: produce putty in order to avoid the section of line style diphenyl sulfide melt extrudes in process at screw rod, cause pressure oscillation, oxidative degradation and crosslinked etc., before melt spinning, namely before screw rod melt extrudes, adopt vacuum drum or pre-crystallized drying equipment to carry out drying (Instructions Page 3 the 2nd section) to linear polyphenylthioether section.
CN103409835B provides " production method of thin dawn polyphony thioether short fiber ", teaches in the first step of processing step: slices synthesis method, pre-crystallized, drying tower is dry, screw extruder melting, melt prefilter, measuring pump, filament spinning component, ring quenching, winding boundling, thin dawn polyphony thioether short fiber raw silk doff.This patented method for be the fiber of 0.9-1.3dtex fiber number; Also have " a kind of production method of high-strength and high-modulus polyphenylene sulfide short fiber " as CN104894678A introduces, its processing step is followed successively by: the mixing of polyphenylene sulfide resin lipoprotein mixture, double screw extruder extrudes, drying, spinning, boundling, stretching, curling, HEAT SETTING, cut-out and packing, improve the fracture strength (4.9-5.2cN/dtex) of fiber, achievement place that modulus of shearing (3-4.5cN/dtex) is this patent.
Known by the reading of the description to above-mentioned CN103409835B and CN104894678A, both process line are substantially identical, mainly reach by changing process conditions such as temperature, time, pressure, raw material etc. the object obtaining extraordinary polyphenylene sulfide fibre, but all do not provide the enlightenment being simplified operation, reduction energy consumption, saving equipment dosage and cost of investment, improve spinnability etc.
As is known in the industry, polyphenylene sulfide powder is the precursor of polyphenylene sulfide particle (section), people follow traditional handicraft all the time and are first prepared into particle, again drying is carried out to particle, then melt extruded by screw extruder, be therefore difficult to the expection that even preparation cost of polyphenylene sulfide short fiber cannot be reduced to industry.But show through the repetition test that the applicant does: as long as make rational modification to process route and rationally increase and decrease relevant device, the first granulation can breaking away from traditional mode so is completely dry again, and technical scheme described below produces under this background.
Summary of the invention
Task of the present invention is to provide the modification of a kind of polyphenylene sulfide powder directly to prepare the method for polyphenylene sulfide modification short fiber, the method carried out modification, granulation and dry and use and improve preparation efficiency and drawing-off and spinning are carried out with running neck and neck without the need to p-poly-phenyl thioether powder before screw rod melt extrudes with following the prescribed order successively, contributed to abandoning strand and to fall bucket and abandon boundling and use and reduce process procedure, reduce energy consumption and then improve preparation efficiency, saving preparation cost and ensured the uniformity of polyphenylene sulfide modification short fiber quality.
Task of the present invention has been come like this, the method of polyphenylene sulfide modification short fiber is directly prepared in the modification of a kind of polyphenylene sulfide powder, it is that quality % is polyphenylene sulfide modification melt and by this polyphenylene sulfide modification melt extrusion in the homogenizing still being furnished with agitator than for the polyphenylene sulfide powder of 96-98.5% and quality % introduce melting in the screw extruder being furnished with kneading device than the modifier for 1.5-4%, solvent and the low molecular weight volatile thing of the polyphenylene sulfide modification melt entered in homogenizing still is extracted by homogenizing still, and polyphenylene sulfide modification melt homogenization is mixed, then filter is sent into by the Melt Pump be connected with homogenizing still, measure through measuring pump after being filtered by filter removal of impurities and introduce manifold spinning, the strand sprayed by the spinneret orifice on the spinnerets of manifold is successively through ring cold wind blower ring quenching, oiling roller oils to strand, drawing-off, heat setting machine is shaped, curling, laxation shaping machine laxation shaping, cut off and packing, obtain polyphenylene sulfide modification short fiber.
In a specific embodiment of the present invention, described modifier is nano silicon.
In another specific embodiment of the present invention, the linear polyphenylene sulfide powder of described polyphenylene sulfide powder to be melt index be 110-200g/10min.
In another specific embodiment of the present invention, the extruder temperature of described described screw extruder when extruding is: a district 236-240 DEG C, two district 245-250 DEG C, three district 260-270 DEG C, four district 272-276 DEG C, five district 280-285 DEG C, six district 285-290 DEG C, seven district 295-300 DEG C, eight district 295-305 DEG C, nine district 305-320 DEG C, ten district 305-330 DEG C, head temperature is 300-340 DEG C.
In another specific embodiment of the present invention, the temperature of described manifold spinning is 306-340 DEG C; Described spinnerets is circular jetting filament plate, and the diameter of this circular jetting filament plate is 260 ㎜, and the diameter of spinneret orifice is 0.25-0.45 ㎜, and draw ratio L: the D of spinneret orifice is 3 ~ 4: 1.
Also have in a specific embodiment of the present invention, the mode of described ring blowing is dry from inside to outside and any one ring blowing mode in the blowing of ecto-entad, and the temperature of ring blowing controls as 15-26 DEG C; Described oiling roller is 0.22-0.5% to the oil applying rate that strand oils.
More of the present invention and in a specific embodiment, described drawing-off is hot-rolling drawing-off and drawing-off number of channels is three roads, the drafting multiple of first drawing-off be 1.02-1.2 doubly and the drawing temperature of first drawing-off is 70-110 DEG C; The drafting multiple of second drawing-off is 2.8-3.8 times and the drawing temperature of second drawing-off is 60-120 DEG C; The drafting multiple of the 3rd road drawing-off be 1.02-1.2 doubly and drawing temperature is 100-140 DEG C, linear velocity when described strand goes out the 3rd road heat-stretching roller is 950-1500m/min.
In an of the present invention and then specific embodiment, the temperature of described heat setting machine sizing is 150-220 DEG C, and the temperature of described laxation shaping machine laxation shaping is 140-180 DEG C.
Of the present invention again more and in a specific embodiment, described curling crispation number is 9-14/25 ㎜; Described cut-out is that tow to be cut to length be 38 ㎜, 51 ㎜ or 76 ㎜.
In an again of the present invention and then specific embodiment, the fiber number of described polyphenylene sulfide modified short fiber is 0.9-5.0dtex, and fracture strength is 4.0-4.80CN/dtex, and elongation at break is 28.0-45%, and 180 DEG C of dry-hot shrinkages are 3.0-8.5%.
Technical scheme provided by the invention relative to prior art because of without the need to granulation, drying, fall bucket and without the need to boundling after the bucket that falls, but polyphenylene sulfide powder and modifier are dropped into melting in the screw extruder being furnished with kneading device in the lump and extrude drawing-off, thus significantly can shorten preparation flow, simplified apparatus configuration, improve preparation efficiency, reduce preparation cost, energy efficient and the uniformity of the quality of polyphenylene sulfide modification short fiber can be ensured.
Detailed description of the invention
Embodiment 1:
By melt index be 155g/10min's and quality % than be 98.5% polyphenylene sulfide powder and quality % be 1.5% nano silicon introduce be furnished with melting in the screw extruder of kneading device be polyphenylene sulfide modification melt and simultaneously by this polyphenylene sulfide modification melt extrusion in the homogenizing still being furnished with agitator, be less than 10Pa in the vacuum of homogenizing still and extracted solvent and the low molecular weight volatile thing of the polyphenylene sulfide modification melt entered in homogenizing still under be in stirring at agitator by homogenizing still, polyphenylene sulfide modification melt homogenization is mixed simultaneously, then sent into by the Melt Pump be connected with the discharging opening of homogenizing still and namely pump into filter, measure through measuring pump after being filtered by filter removal of impurities (removing impurity) and introduce manifold spinning, the temperature of spinning is 318 DEG C, the strand sprayed by the spinneret orifice on the spinnerets of the filament spinning component of manifold is successively through ring quenching, oiling roller oils to strand, hot-rolling drawing-off (hot-rolling is electromagnetic induction heating roller), heat setting machine is shaped, curling, laxation shaping machine laxation shaping, cut off and packing, obtain polyphenylene sulfide modification short fiber, the extruder temperature of screw extruder when extruding described in the present embodiment controls: 236 DEG C, a district, two 250 DEG C, districts, three 265 DEG C, districts, four 272 DEG C, districts, five 280 DEG C, districts, six 290 DEG C, districts, seven 295 DEG C, districts, eight 295 DEG C, districts, nine 310 DEG C, districts, ten 305 DEG C, districts, head temperature is 335 DEG C, described spinnerets is circular jetting filament plate, the diameter of this spinnerets is 260 ㎜, the diameter of spinneret orifice is 0.45 ㎜, the draw ratio L/D of spinneret orifice is 3.5: 1, the ring blowing mode of described ring quenching is for dry from inside to outside, the temperature (wind-warm syndrome) of ring blowing is 15 DEG C, the oil applying rate of strand when by way of oiling roller is 0.45%, hot-rolling drawing-off number of channels is three roads, first drawing-off completes between the first drawing roller (configuring in pairs) and the second drawing roller (configuring in pairs), the temperature of first drawing roller is 100 DEG C and drafting multiple is 1.03 times, second drawing-off carries out between the second drawing roller and the 3rd drawing roller (configuring in pairs), and the temperature of second drawing-off is 90 DEG C and drafting multiple is 3.3 times, 3rd road drawing-off is carried out between the 3rd drawing roller and the 4th drawing roller (configuring in pairs), the temperature of the 3rd road drawing-off is 120 DEG C and drafting multiple is 1.1 times, strand is 1200m/min going out linear velocity when namely the 3rd road drawing roller goes out the 4th drawing roller, and the setting temperature of described heat setting machine sizing is 200 DEG C, described curling crispation number is 9/25 ㎜, the temperature of described laxation shaping machine laxation shaping is 150 DEG C, the length of described cut-out is 51 ㎜, the fiber number of described polyphenylene sulfide modification short fiber is 2.2dtex, fracture strength is 4.5CN/dtex, elongation at break be 33.3%, 180 DEG C of dry-hot shrinkages is 6%.
Embodiment 2:
By melt index be 110/10min's and quality % than be 96% polyphenylene sulfide powder and quality % be 4% nano silicon introduce be furnished with melting in the screw extruder of kneading device be polyphenylene sulfide modification melt and simultaneously by this polyphenylene sulfide modification melt extrusion in the homogenizing still being furnished with agitator, be less than 10Pa in the vacuum of homogenizing still and extracted solvent and the low molecular weight volatile thing of the polyphenylene sulfide modification melt entered in homogenizing still under be in stirring at agitator by homogenizing still, polyphenylene sulfide modification melt homogenization is mixed simultaneously, then sent into by the Melt Pump be connected with the discharging opening of homogenizing still and namely pump into filter, measure through measuring pump after being filtered by filter removal of impurities (removing impurity) and introduce manifold spinning, the temperature of spinning is 316 DEG C, the strand sprayed by the spinneret orifice on the spinnerets of the filament spinning component of manifold is successively through ring quenching, oiling roller oils to strand, hot-rolling drawing-off (hot-rolling is electromagnetic induction heating roller), heat setting machine is shaped, curling, laxation shaping machine laxation shaping, cut off and packing, obtain polyphenylene sulfide modification short fiber, the extruder temperature of screw extruder when extruding described in the present embodiment controls: 240 DEG C, a district, two 245 DEG C, districts, three 270 DEG C, districts, four 274 DEG C, districts, five 285 DEG C, districts, six 285 DEG C, districts, seven 300 DEG C, districts, eight 303 DEG C, districts, nine 305 DEG C, districts, ten 330 DEG C, districts, head temperature is 340 DEG C, described spinnerets is circular jetting filament plate, the diameter of this spinnerets is 260 ㎜, the diameter of spinneret orifice is 0.35 ㎜, the draw ratio L/D of spinneret orifice is 3: 1, the ring blowing mode of described ring quenching is ecto-entad blowing, the temperature (wind-warm syndrome) of ring blowing is 26 DEG C, the oil applying rate of strand when by way of oiling roller is 0.22%, hot-rolling drawing-off drawing-off number of channels is three roads, first drawing-off completes between the first drawing roller (configuring in pairs) and the second drawing roller (configuring in pairs), the temperature of first drawing roller is 70 DEG C and drafting multiple is 1.02 times, second drawing-off carries out between the second drawing roller and the 3rd drawing roller (configuring in pairs), and the temperature of second drawing-off is 120 DEG C and drafting multiple is 3.8 times, 3rd road drawing-off is carried out between the 3rd drawing roller and the 4th drawing roller (configuring in pairs), and the temperature of the 3rd road drawing-off is 140 DEG C and drafting multiple is 1.2 times, strand is 950m/min going out linear velocity when namely the 3rd road drawing roller goes out the 4th drawing roller, and the temperature of the sizing of described heat setting machine sizing is 150 DEG C, described curling crispation number is 14/25 ㎜, the temperature of described laxation shaping machine laxation shaping is 180 DEG C, the length of described cut-out is 38 ㎜.The fiber number of described polyphenylene sulfide modification short fiber is 5dtex, fracture strength is 4CN/dtex, elongation at break be 28%, 180 DEG C of dry-hot shrinkages is 3%.
Embodiment 3:
By melt index be 200g/10min's and quality % than be 97.5% polyphenylene sulfide powder and quality % be 2.5% nano silicon introduce be furnished with melting in the screw extruder of kneading device be polyphenylene sulfide modification melt and simultaneously by this polyphenylene sulfide modification melt extrusion in the homogenizing still being furnished with agitator, be less than 10Pa in the vacuum of homogenizing still and extracted solvent and the low molecular weight volatile thing of the polyphenylene sulfide modification melt entered in homogenizing still under be in stirring at agitator by homogenizing still, polyphenylene sulfide modification melt homogenization is mixed simultaneously, then sent into by the Melt Pump be connected with the discharging opening of homogenizing still and namely pump into filter, measure through measuring pump after being filtered by filter removal of impurities (removing impurity) and introduce manifold spinning, the temperature of spinning is 306 DEG C, the strand sprayed by the spinneret orifice on the spinnerets of the filament spinning component of manifold is successively through ring quenching, oiling roller oils to strand, hot-rolling drawing-off (hot-rolling is electromagnetic induction heating roller), heat setting machine is shaped, curling, laxation shaping machine laxation shaping, cut off and packing, obtain polyphenylene sulfide modification short fiber, the extruder temperature of screw extruder when extruding described in the present embodiment controls: 238 DEG C, a district, two 248 DEG C, districts, three 260 DEG C, districts, four 276 DEG C, districts, five 282 DEG C, districts, six 288 DEG C, districts, seven 298 DEG C, districts, eight 305 DEG C, districts, nine 320 DEG C, districts, ten 315 DEG C, districts, head temperature is 300 DEG C, described spinnerets is circular jetting filament plate, the diameter of this spinnerets is 260 ㎜, the diameter of spinneret orifice is 0.25 ㎜, the draw ratio L/D of spinneret orifice is 4: 1, the ring blowing mode of described ring quenching is for dry from inside to outside, the temperature (wind-warm syndrome) of ring blowing is 20 DEG C, the oil applying rate of strand when by way of oiling roller is 0.36%, hot-rolling drawing-off drawing-off number of channels is three roads, first drawing-off completes between the first drawing roller (configuring in pairs) and the second drawing roller (configuring in pairs), the temperature of first drawing roller is 90 DEG C and drafting multiple is 1.2 times, second drawing-off carries out between the second drawing roller and the 3rd drawing roller (configuring in pairs), and the temperature of second drawing-off is 60 DEG C and drafting multiple is 2.8 times, 3rd road drawing-off is carried out between the 3rd drawing roller and the 4th drawing roller (configuring in pairs), the temperature of the 3rd road drawing-off is 100 DEG C and drafting multiple is 1.02 times, strand is 1500m/min going out linear velocity when namely the 3rd road drawing roller goes out the 4th drawing roller, and the temperature of described heat setting machine sizing is 220 DEG C, described curling crispation number is 12/25 ㎜, the temperature of described laxation shaping machine laxation shaping is 140 DEG C, the length of described cut-out is 76 ㎜.The fiber number of described polyphenylene sulfide modification short fiber is 0.9dtex, fracture strength is 4.8CN/dtex, elongation at break be 45%, 180 DEG C of dry-hot shrinkages is 8.5%.
Claims (10)
1. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder modification, it is characterized in that it quality % is introduced melting in the screw extruder being furnished with kneading device than polyphenylene sulfide powder and the quality % for 96-98.5% than the modifier for 1.5-4% be polyphenylene sulfide modification melt and by this polyphenylene sulfide modification melt extrusion in the homogenizing still being furnished with agitator, solvent and the low molecular weight volatile thing of the polyphenylene sulfide modification melt entered in homogenizing still is extracted by homogenizing still, and polyphenylene sulfide modification melt homogenization is mixed, then filter is sent into by the Melt Pump be connected with homogenizing still, measure through measuring pump after being filtered by filter removal of impurities and introduce manifold spinning, the strand sprayed by the spinneret orifice on the spinnerets of manifold is successively through ring cold wind blower ring quenching, oiling roller oils to strand, drawing-off, heat setting machine is shaped, curling, laxation shaping machine laxation shaping, cut off and packing, obtain polyphenylene sulfide modification short fiber.
2. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that described modifier is nano silicon.
3. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that described polyphenylene sulfide powder to be melt index be the linear polyphenylene sulfide powder of 110-200g/10min.
4. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, the extruder temperature of described screw extruder when extruding described in it is characterized in that is: a district 236-240 DEG C, two district 245-250 DEG C, three district 260-270 DEG C, four district 272-276 DEG C, five district 280-285 DEG C, six district 285-290 DEG C, seven district 295-300 DEG C, eight district 295-305 DEG C, nine district 305-320 DEG C, ten district 305-330 DEG C, head temperature is 300-340 DEG C.
5. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that the temperature of described manifold spinning is 306-340 DEG C; Described spinnerets is circular jetting filament plate, and the diameter of this circular jetting filament plate is 260 ㎜, and the diameter of spinneret orifice is 0.25-0.45 ㎜, and draw ratio L: the D of spinneret orifice is 3 ~ 4: 1.
6. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that the mode that described ring is dried is dry from inside to outside and any one ring blowing mode in the blowing of ecto-entad, the temperature of ring blowing controls as 15-26 DEG C; Described oiling roller is 0.22-0.5% to the oil applying rate that strand oils.
7. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that described drawing-off is hot-rolling drawing-off and drawing-off number of channels is three roads, the drafting multiple of first drawing-off is 1.02-1.2 times and the drawing temperature of first drawing-off is 70-110 DEG C; The drafting multiple of second drawing-off is 2.8-3.8 times and the drawing temperature of second drawing-off is 60-120 DEG C; The drafting multiple of the 3rd road drawing-off be 1.02-1.2 doubly and drawing temperature is 100-140 DEG C, linear velocity when described strand goes out the 3rd road heat-stretching roller is 950-1500m/min.
8. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, and it is characterized in that the temperature that described heat setting machine is shaped is 150-220 DEG C, the temperature of described laxation shaping machine laxation shaping is 140-180 DEG C.
9. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that described curling crispation number is 9-14/25 ㎜; Described cut-out is that tow to be cut to length be 38 ㎜, 51 ㎜ or 76 ㎜.
10. the method for polyphenylene sulfide modification short fiber is directly prepared in polyphenylene sulfide powder according to claim 1 modification, it is characterized in that the fiber number of described polyphenylene sulfide modified short fiber is 0.9-5.0dtex, fracture strength is 4.0-4.80CN/dtex, elongation at break is 28.0-45%, and 180 DEG C of dry-hot shrinkages are 3.0-8.5%.
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| CN201610114048.4A CN105544001A (en) | 2016-03-01 | 2016-03-01 | Method for directly preparing PPS (polyphenylene sulfide) modified short fibers through modification of PPS powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593575A (en) * | 2019-02-20 | 2020-08-28 | 江苏唐工纺实业有限公司 | Preparation method of anti-electromagnetic radiation fabric |
| WO2023189809A1 (en) * | 2022-03-31 | 2023-10-05 | 東洋紡エムシー株式会社 | Polyphenylene sulfide fiber and method for producing same |
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| CN101187088A (en) * | 2007-11-28 | 2008-05-28 | 东华大学 | Modified polyphenylene sulfide fiber and method for making same |
| CN101298707A (en) * | 2008-05-02 | 2008-11-05 | 营口耐斯特环保科技有限公司 | Nano compound modified polyphenyl thioether fibre and preparing method thereof |
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| CN101387016A (en) * | 2007-09-13 | 2009-03-18 | 四川得阳化学有限公司 | Silk making technique by polyphenylene sulfide |
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| CN101298707A (en) * | 2008-05-02 | 2008-11-05 | 营口耐斯特环保科技有限公司 | Nano compound modified polyphenyl thioether fibre and preparing method thereof |
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| CN111593575A (en) * | 2019-02-20 | 2020-08-28 | 江苏唐工纺实业有限公司 | Preparation method of anti-electromagnetic radiation fabric |
| WO2023189809A1 (en) * | 2022-03-31 | 2023-10-05 | 東洋紡エムシー株式会社 | Polyphenylene sulfide fiber and method for producing same |
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