CN102517680B - Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device - Google Patents
Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device Download PDFInfo
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- CN102517680B CN102517680B CN201110432642.5A CN201110432642A CN102517680B CN 102517680 B CN102517680 B CN 102517680B CN 201110432642 A CN201110432642 A CN 201110432642A CN 102517680 B CN102517680 B CN 102517680B
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Abstract
The invention discloses a multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device. The invention is characterized in that a current FDY production device is used, a raw material polyamide 6 is sliced and dried, an additive is on-line added, the sliced polyamide 6 is subjected to screw extrusion and melt extrusion, strand which is subjected to annealing and circular-blow wind cooling solidification is divided in to two beams, one beam of the strand is subjected to oiling, pre-networking, stretching and thermosetting to obtain FDY; another beam of the strand is subjected to oiling and then is input to a first godet roller, and then subjected to pre-networking and input to a second godet roller to obtain POY, then simultaneously input in an interlacing nozzle for compositing, a process of winding formation is carried out to prepare the multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber. According to the fiber molecular structure performance design and the fiber form control, a process optimization scheme is determined to obtain the composite silk fiber with differential linear density, differential elongation and differential shrinkage, the fiber has the advantages of moisture absorption, breathability, good drapability, high color rendering, good comfortableness and the like.
Description
Technical field
The present invention relates to a kind of Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers, preparation method, and equipment, chemical fibre technical field belonged to.
Background technology
Multi-hole superfine denier polyamide 6 POY/FDY composite fibres are that a kind of other fiber by sub-thread or multiply polyamide 6 fine denier filament and different size, different cultivars or same breed, same size enters into texturing jet by overfeeding mode, compound Tangling under the effect of hypersonic air flow, produce and shrink and looped pile, the super simulative fiber that the yarn of intermeshing zone circle circle forms.This composite fibre has fine structure, interfibrous fine space, space three-dimensional vertical configuration state, sandwich construction and the outward appearance similar to natural fabric that specialty fibers group forms.Compared with general fiber, its sense of touch is more soft, resilience is better, and can overcome that natural fabric easily wrinkles, the air-locked shortcoming of artificial fibre, fiber is also being significantly improved aspect spreadability, bulkiness and warmth retention property in addition, can give the super well-pressed soft feeling of fabric, natural sense, glutinous and new styles such as dry feeling.Some performance surmounts natural fabric, and added value is high, is therefore widely used in chemical fibre market, middle and high end.
At present, prepare the production technology of Multi-hole superfine denier polyamide 6 POY/FDY composite fibres, generally adopt two step method production Technology route: first adopt the production process of melt-spun UDY-DT, POY or FDY, then it is compound that POY and DT or FDY are carried out to interlacing.The technological process of conventional two-step method is long, manufacturing procedure complexity, and dyeability and effect are poor, poor product quality, and production cost is high, and efficiency is low.
Summary of the invention
The present invention is intended to overcome many deficiencies of the technology method existence of two step method production Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fiber in prior art, provide that a kind of production cost is low, output is high, good product quality, added value are high, production Technology is easy to regulation and control and can rationally utilizes existing FDY device resource, produce the Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers of iso-fineness, different elongation and different contraction, preparation method and equipment.
In order to achieve the above object, the technical solution used in the present invention is: a kind of Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers are provided, and specification is 66dtex/136f～88dtex/136f; It comprises that mass fraction is 0.5～5.0% additive, described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, and by weight percentage, the content of methacrylate is 75～85%, the content of maleic anhydride is 10～12%, and all the other are styrene.
A kind of equipment of preparing described Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers, based on the FDY equipment of producing conventional variety, comprise pre-crystallized, dry, screw rod melt extruded device, spinning manifold, measuring pump, filament spinning component, spinnerets device for spinning, cooling curing device, oiling device and coiling and forming device; On the charging aperture of described screw rod melt extruded device, additive injector is installed; Described cooling curing device is Xu Lenghe ring quenching; Xu Leng heater is installed below spinnerets, and heating region height is 100～120mm; The below installing ring cold wind blower of Xu Leng heater; Described oiling device, its boundling oil frame that oils is arranged on the below of ring cold wind blower, and the distance of leaving spinnerets is 800 ± 50 mm places; Described coiling and forming device comprises POY shaping, FDY shaping, interlacing jet nozzle and up-coiler.
Described POY is shaped and comprises first, second godet roller and pre-Network device, and pre-Network device is placed in the centre of the first godet roller and the second godet roller.
Described FDY winding shaping comprises first, second, and third drawing roller, pre-Network device and Network device.
A method of preparing described Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers, comprises that chip drying, melt extruded, melt extrusion, cooling curing, oil nozzle oil and winding shaping operation; Described melt extruded operation, in polyamide 6 section, adding mass fraction is 0.5～5.0% additive, after section fully mixes with additive, adopt 5 grades of screw rod melt extrusion processes, the temperature of 5 grades of screw rods is respectively 249 ± 2 DEG C, 259 ± 2 DEG C, 262 ± 2 DEG C, 260 ± 2 DEG C and 259 ± 2 DEG C; Described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, and by weight percentage, the content of methacrylate is 75～85%, and the content of maleic anhydride is 10～12%, and all the other are styrene; Described cooling curing operation is Xu Lenghe ring quenching; The heating-up temperature of Xu Leng is 230 ± 2 DEG C; The process conditions of ring blowing are: pressure 490Pa, 22 DEG C ± 2 DEG C of wind-warm syndrome, humidity 90% ± 5%, wind speed 0.40 m/s～0.50 m/s; Strand after cooling curing is divided into two bundles, a branch of through oiling, obtaining FDY after network, stretching and HEAT SETTING in advance; After being input to the first godet roller after another Shu Jing oils and carrying out pre-network, be input to again the second godet roller, obtain POY, then they are inputted to interlacing jet nozzle simultaneously and carry out compoundly, through coiling and molding, make Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers.
The preparation technology of described POY is: the tow input speed after oil nozzle oils is the first godet roller of 3895～4400 m/min, the pre-Network device that is 0.75 ± 0.05 bar through pressure carries out after pre-network, admission velocity is the second godet roller of 4000～4500 m/min again, and godet roller is cold roller.
The preparation technology of described FDY is: the tow oiling after boundling through nozzle is inputted pre-network, pre-network pressure is 0.75 ± 0.05 bar, be drawn to the first normal temperature drawing roller and the second normal temperature drawing roller stretches, their speed is respectively 3495～3980 m/min and 4050～4560 m/min again; Carry out HEAT SETTING through the 3rd hot-rolling, its temperature is 135～155 DEG C, and speed is 4010～4515 m/mi; Input pressure is the master network of 3 ± 0.05 bar again.
Described coiling and molding, its winding speed is 4000～4500 m/mi.
Compared with prior art, remarkable result of the present invention is:
1, adopt and add online additive, by molecular structure modification, blend, abnormal shape, ultra-fine, complex technique, provide special, super fine denier, moisture absorption to have a good sweat, lead wet standardization, fibre in differentiation kind, improve fiber combination property, surmount spinnability, stainability, the comfortableness of natural fabric, produce high-quality, high added value, realized difference functionalization cheaply.
2, adopt online formed composite technology, by means such as fibrous molecular structure performance design and fibre morphology controls, determine process optimization scheme, implement different size, different cultivars or same breed, same size, the complex machining process technology of different structure performance polyamide fibre 6, obtain iso-fineness, the compound silk fiber of different elongation and different contraction, and fiber construct has by capillary core sucting action and is formed water suction wet guiding function, make its fabric there is moisture absorption ventilative, washing shrinkage is low, quick-drying washable, drapability is good, high-color rendering, the plentiful softness of sense of touch, comfortableness waits well premium properties.
3, by existing FDY production equipment is carried out to flexibility transformation, and the Silk Road adjustment, select suitable spinning technique technique and online shaping interlacing complex machining process and technology path, scrap build less investment, prepare production cost low, product has the high-quality, high added value of outward appearance similar to natural fabric, three-dimensional vertical configuration state, sandwich construction, the feature of applied widely, the differential super copying of function.
4, the fiber applications that adopts the compound technology of preparing of Multi-hole superfine denier polyamide 6 POY/FDY interlacing to produce is extensive, the silk-like fabric that becomes to produce by its technology, and flexibility is better than terylene, and fabric fall is good; Fine denier filament is also the good raw material of eiderdown shell fabric, and fine denier filament adds after bullet, can make slight knitting product, very popular.
Brief description of the drawings
Fig. 1 is preparation technology's flow chart of a kind of Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers of providing of the embodiment of the present invention.
Specific implementation method
Below in conjunction with drawings and Examples, technical solution of the present invention is further elaborated.
Embodiment 1
Referring to accompanying drawing 1, it is preparation technology's flow chart of a kind of Multi-hole superfine denier polyamide 6 POY/FDY interlacing compound silks of providing of the present embodiment, provides the Multi-hole superfine denier polyamide that a kind of novel production performance is good 6 POY/FDY intermingled composite fiber preparation methods.Production technology is as follows:
Polyamide 6 section relative viscosity is 2.70～3.10, relative molecular weight is 16000～18000, section at 145 DEG C pre-crystallized about 30 minutes, deliver to drying tower inner drying 6～8 hours, baking temperature is 155 DEG C, ensure that section moisture content is less than 30ppm, the dry section of dried polyamide 6 enters screw rod, in chinlon 6 section, adding mass fraction is 5.0% additive, described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, by weight percentage, the content of methacrylate is 80%, the content of maleic anhydride is 12%, all the other are styrene, after section fully mixes in screw rod with additive, adopt 5 grades of screw rod melt extrusion processes, through heating and melting, after mixing, measure, filtering, enter spinning manifold, carry out flow measurement (setting by specification) enter filament spinning component by measuring pump, then melt sprays from spinnerets micropore, cooling curing is shaped, cooling curing device is Xu Lenghe ring quenching, and Xu Leng heater is installed below spinnerets, and heating region height is 100～120mm, the below installing ring cold wind blower of Xu Leng heater, strand after cooling curing is divided into two bundles, a branch of through oiling, obtaining polyamide 6 fullly drawn yarn (FDY) FDY after network, stretching and HEAT SETTING in advance, after being drawn to the first godet roller after another Shu Jing oils and carrying out pre-network, be drawn to again the second godet roller, obtain polyamide 6 pre-oriented yarn (POY), by their simultaneously input nozzle to carry out interlacing compound, and through coiler device with 4000～4500m/min speed coiling and molding, make Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers, concrete technological parameter is in table 1.The relevant performance of the Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers that prepare is referring to table 2.
Table 1
Table 2
| Project | Unit | Properties of product |
| Line density | dtex | 66 |
| Line density coefficient of variation cv | % | 2.65 |
| Bar evenness (cv) | % | 1.2 |
| Fracture strength | cN/dex | 2.75 |
| Fracture strength coefficient of variation cv | % | 4.70 |
| Elongation at break | % | 29 |
| Elongation at break coefficient of variation cv | % | 8.00 |
| Oil content | % | 0.65 |
| Boiling water shrinkage | % | 28 |
| Network degree | Individual/rice | 20 |
| Dye uniformity (ash card) | Level | ≥4.5 |
| Outward appearance/excellent rate | % | ≥98% |
Existing FDY production equipment is carried out to flexibility transformation in utilization of the present invention and nozzle arrangements improves and the Silk Road adjustment, select suitable spinning technique technique and online shaping interlacing complex technique and processing condition, have that production cost is low, flexible operation large, have that colouring property is good, properties of product stable and added value advantages of higher.The intermingled composite fiber preparation method who provides, adopts online shaping interlacing complex technique, spins speed and improves 35～50%, and energy consumption declines 35～45%.This technique can be produced high perceptual three-dimensional structure composite fibre, make the composite fibre of the iso-fineness of different size, different cultivars or same breed, same size, different elongation and different contraction, and fiber construct has the water suction wet guiding function being formed by capillary core sucting action, the premium properties such as make that its fabric has that moisture absorption is ventilative, washing shrinkage is low, quick-drying washable, drapability is good, high-color rendering, the plentiful softness of sense of touch, comfortableness are good.This technological operation is simple, produce and be easy to control, and production cost is low, output is high, high-quality, applied widely, added value is high.
Claims (3)
1. prepare the method for Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers for one kind, comprise that chip drying, melt extruded, melt extrusion, cooling curing, oil nozzle oil and winding shaping operation, described Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers, specification is 66dtex/136f～88dtex/136f, it is characterized in that:
Described melt extruded operation, in polyamide 6 section, adding mass fraction is 0.5～5.0% additive, after section fully mixes with additive, adopt 5 grades of screw rod melt extrusion processes, the temperature of 5 grades of screw rods is respectively 249 ± 2 DEG C, 259 ± 2 DEG C, 262 ± 2 DEG C, 260 ± 2 DEG C and 259 ± 2 DEG C; Described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, and by weight percentage, the content of methacrylate is 75～85%, and the content of maleic anhydride is 10～12%, and all the other are styrene;
Described cooling curing operation is Xu Lenghe ring quenching; The heating-up temperature of Xu Leng is 230 ± 2 DEG C; The process conditions of ring blowing are: pressure 490Pa, 22 DEG C ± 2 DEG C of wind-warm syndrome, humidity 90% ± 5%, wind speed 0.40 m/s～0.50 m/s;
Strand after cooling curing is divided into two bundles, a branch of through oiling, obtaining FDY after network, stretching and HEAT SETTING in advance; After being input to the first godet roller after another Shu Jing oils and carrying out pre-network, be input to again the second godet roller, obtain POY, then they are inputted to interlacing jet nozzle simultaneously and carry out compoundly, through coiling and molding, make Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers;
The preparation technology of FDY is: the tow oiling after boundling through nozzle is inputted pre-network, pre-network pressure is 0.75 ± 0.05 bar, be drawn to the first normal temperature drawing roller and the second normal temperature drawing roller stretches, their speed is respectively 3495～3980 m/min and 4050～4560 m/min again; Carry out HEAT SETTING through the 3rd hot-rolling, its temperature is 135～155 DEG C, and speed is 4010～4515 m/mim; Input pressure is the master network of 3 ± 0.05 bar again.
2. a kind of method of preparing Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers according to claim 1, the preparation technology who it is characterized in that described POY is: the tow input speed after oil nozzle oils is the first godet roller of 3895～4400 m/min, the pre-Network device that is 0.75 ± 0.05 bar through pressure carries out after pre-network, admission velocity is the second godet roller of 4000～4500 m/min again, and godet roller is cold roller.
3. a kind of method of preparing Multi-hole superfine denier polyamide 6 POY/FDY intermingled composite fibers according to claim 1, is characterized in that described coiling and molding, and its winding speed is 4000～4500 m/mim.
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