CN102493016A - Porous superfine polyamide 6 fully-drawn yarn, preparation method thereof, and equipment thereof - Google Patents
Porous superfine polyamide 6 fully-drawn yarn, preparation method thereof, and equipment thereof Download PDFInfo
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- CN102493016A CN102493016A CN2011104326406A CN201110432640A CN102493016A CN 102493016 A CN102493016 A CN 102493016A CN 2011104326406 A CN2011104326406 A CN 2011104326406A CN 201110432640 A CN201110432640 A CN 201110432640A CN 102493016 A CN102493016 A CN 102493016A
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Abstract
The invention relates to a porous superfine polyamide 6 fully-drawn yarn, a preparation method thereof, and equipment thereof. According to the invention, existing FDY production equipment is adopted. A raw material polyamide 6 is sliced and dried; an additive is added on line; the material is subject to screw extrusion and melt extrusion; the material is then cured with a gradually cooling manner and a circular air blow cooling manner; with a reasonably selected spinning temperature of 259-262 DEG C, an air temperature in the circular air blowing process of 19-23 DEG C, a humidity of 85-95%, an air velocity of 0.35-0.45m/s, an oiling and clustering position of 700-800mm, and a winding speed of 4100-4600m/min, the porous superfine polyamide 6 fully-drawn yarn product with a specification of 55dtex/144f-75dtex/144f is prepared. Flexible operation is adopted in the preparation method. The preparation method is advantaged in simple technology and low production cost. The product is advantaged in stable performance, good yarn evenness, and good coloration property.
Description
Technical field
The present invention relates to a kind of novel porous superfine denier polyamide 6 fullly drawn yarn (FDY)s, preparation method and equipment thereof, belong to the chemical fibre technical field.
Background technology
The potential characteristic of porous superfine denier polyamide 6 fullly drawn yarn (FDY)s has high-flexibility and good, the high moisture absorption of pleasant softness and oil absorption, specific area and reaches good physics and chemical properties such as highly dense structure greatly; Its fabric manufactured goods have that moisture absorption is ventilative, washing shrinkage low, painted strong, folding property is good, rotproofness is strong, the plentiful softness of sense of touch, quick-drying washable, non-ironing, superelevation simulative fiber effects preferably such as drapability is good, comfortableness is good; Therefore, be widely used in consumption markets, middle and high end such as garment material, bedding, adornment, leather and fur products.
At present; Mainly prepare conventional polyamide 6 fullly drawn yarn (FDY) through following three kinds of technological approaches both at home and abroad: melt-spun is produced the method for conventional polyamide 6 fullly drawn yarn (FDY) fiber; Usually by undrawn yarn-stretching silk (UDY-DT) conventional two-step method; Develop into the process route of the one-step method of pre-oriented yarn-stretching silk (POY-DT) high speed two-step method and fullly drawn yarn (FDY) (FDY), spinning speed is brought up to 4500 meters/minute by 1000 meters/minute, and fiber number is reduced to 0.35~0.55dpf by 2~3dpf.But with existing conventional melt-spinning technology technical method and equipment; Owing to can not adjust and control the unfavorable factor of uniform and stable property existence of coiling tensile stress and the porous superfine denier polyamide 6 as-spun fibre spinning cooling formings of strand effectively; It is unstable that melt spinning is shaped, and the lousiness broken end is many, the dried lack of homogeneity of ribbon; Poor, the unstable product quality of dyeing uniformity can't realize the production of 55dtex/144f~75dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY)s.Therefore, on production technology and equipment, need badly and improve.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists; Utilize existing FDY device resource; It is stable to provide a kind of melt spinning to be shaped; The lousiness little breakage, dried uniformity of ribbon and dyeing uniformity are good, constant product quality, added value is high, production Technology is easy to regulate and control production 55dtex/144f~75dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY) products, preparation method and equipment thereof.
In order to achieve the above object, the technical scheme that the present invention adopts provides a kind of porous superfine denier polyamide 6 fullly drawn yarn (FDY)s, and specification is 55dtex/144f~75dtex/144f; It comprises that mass fraction is 0.5~5.0% additive; Described additive is methacrylate, maleic anhydride and the benzene nanometer randomcopolymer of alkene, and by weight percentage, the content of methacrylate is 75~85%; The content of maleic anhydride is 10~12%, and all the other are benzene alkene.
A kind of equipment for preparing porous superfine denier polyamide 6 fullly drawn yarn (FDY)s of the present invention, the FDY equipment based on producing conventional variety comprises preparatory crystallization, drying, screw rod melt extruded device, spinning manifold, measuring pump, filament spinning component, spinnerets device for spinning; The additive injector is installed on the charging aperture of screw rod melt extruded device; The Xu Leng heater is installed below spinnerets, and the heating region height is 100~120mm; The below installing ring cold wind blower of Xu Leng heater; The boundling oil frame that oils is installed in the below of ring cold wind blower, and the distance of leaving spinnerets is 750 ± 50 mm places; Coiling and forming device comprises first, second and the 3rd drawing roller, in advance Network device, Network device and up-coiler.
A kind of method for preparing porous superfine denier polyamide 6 fullly drawn yarn (FDY)s of the present invention; Comprise that the extruding of chip drying, screw rod, melt are extruded, cooling curing, the oil nozzle boundling that oils becomes tow; Tow is winding shaping through in advance network, stretching and HEAT SETTING, after input hands over the network nozzle to carry out network again, and its process conditions are following:
1, in polyamide 6 section, adding mass fraction is 0.5~5.0% additive; Described additive is methacrylate, maleic anhydride and the benzene nanometer randomcopolymer of alkene; By weight percentage; The content of methacrylate is 75~85%, and the content of maleic anhydride is 10~12%, and all the other are benzene alkene;
2, section is adopted 5 grades of screw rod melt extrusion processes with after additive fully mixes in screw rod, and the temperature of 5 grades of screw rods is respectively 251 ± 2 ℃, and 259 ± 2 ℃, 262 ± 2 ℃, 261 ± 2 ℃ and 260 ± 2 ℃;
3, melt adopts Xu Lenghe ring blowing process for cooling solidify out into strand after spinnerets is extruded as the melt thread; The heating-up temperature of Xu Lengqu is 230 ± 2 ℃; The process conditions of ring blowing are: pressure 520Pa, 21 ± 2 ℃ of wind-warm syndrome, humidity 90 ± 5%, wind speed 0.35~0.45 m/s;
4, the tow after nozzle oils boundling is imported preparatory network; Network pressure is 0.8 ± 0.05 bar in advance; Be drawn to the first normal temperature drawing roller again and the second normal temperature drawing roller stretches, their speed is respectively 3595~4080 m/min and 4150~4660 m/min; Carry out HEAT SETTING through the 3rd hot-rolling, its temperature is 135~155 ℃, and speed is 4110~4615 m/mi; Input hands over the network nozzle to carry out network again, and network pressure is 3 ± 0.05 bar, and the winding speed with 4100~4600 m/mi carries out coiling and molding again, and processing specification is the porous superfine denier polyamide 6 fullly drawn yarn (FDY) spinning cakes of 55dtex/144f~75dtex/144f.
Compared with prior art, the invention has the beneficial effects as follows
1, the present invention has selected a kind of efficient, polymeric additive at a low price; Adopt and reasonably add speed and optimum addition; Device and relevant production drawing process condition have been improved; Controlled aggregated structure adjustment and fibre morphology in the shaping effectively, and the supramolecular structure of orientation of the high order in the process and crystallization; Simultaneously,, further improve melt mixed uniformity and pressure stability, effectively adjust and control the coiling tensile stress and the bar of strand and do inhomogeneous rate through transforming the FDY device fabrication.
2, the present invention utilizes the existing FDY of production equipment; The constant temperature of shock chamber in the FDY equipment of producing conventional variety, the lateral blowing cooling air system plant modification of constant humidity are become Xu's device for cooling and ring blowing device cooling curing system and device; Through choose reasonable spinning temperature, cooling quench condition of cure, boundling position and winding speed oil; The method for preparing 55dtex/144f~75dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY) products makes the value-added content of product height that is improved.
3, the groups of fibers structure that obtains by technical scheme of the present invention; The capillary core sucting action is arranged and form the suction wet guiding function; Have the silk of superelevation emulation preferably effect, make that its fabric has that moisture absorption is ventilative, washing shrinkage low, painted strong, folding property is good, rotproofness is strong, the plentiful softness of sense of touch, quick-drying washable, non-ironing, premium properties such as drapability is good, comfortableness is good.
4, technical scheme of the present invention have technology simple, produce and be easy to control and existing equipments resources capable of using, characteristics such as cost is low, output is high, quality is good, added value height, be a kind of novel 55dtex/144f~75dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY) preparation technologies.
The practical implementation method
Below in conjunction with embodiment technical scheme of the present invention is done further to describe.
Embodiment 1
Present embodiment provides a kind of novel good 55dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY)s of production performance.It is based on the FDY equipment of producing conventional variety; Comprise preparatory crystallization, drying, screw rod melt extruded device; The additive injector is installed on the charging aperture of screw rod melt extruded device; Spinning manifold, measuring pump, filament spinning component, spinnerets device for spinning are installed the Xu Leng heater below spinnerets, the heating region height is 100~120mm; The below installing ring cold wind blower of Xu Leng heater; The boundling oil frame that oils is installed in the below of ring cold wind blower, and the distance of leaving spinnerets is 750 ± 50 mm places; Coiling and forming device comprises first, second and the 3rd drawing roller, in advance Network device, Network device and up-coiler.
Production technology is following:
The polyamide 6 section relative viscosity is 2.70~3.10, and relative molecular weight is 16000~18000, cuts into slices 145 ℃ of following preparatory crystallizations about 30 minutes; Delivered to the drying tower inner drying 6~8 hours, baking temperature is 155 ℃, guarantees that the section moisture content is less than 30ppm; Dried polyamide 6 is done section and is got into screw rod, and the adding mass fraction is 3.0% additive in chinlon 6 section, and described additive is methacrylate, maleic anhydride and the benzene nanometer randomcopolymer of alkene; By weight percentage; The content of methacrylate is 85%, and the content of maleic anhydride is 10%, and all the other are benzene alkene; Section is adopted 5 grades of screw rod melt extrusion processes, through heating and melting with after additive fully mixes in screw rod; Mix, measure, filter the back and get into spinning manifold; Be extruded as the melt thread through measuring pump, filament spinning component, spinnerets, be shaped through Xu's device for cooling and ring blowing device cooling curing, and the boundling that oils become tow; Tow is coiling and molding through in advance network, stretching and HEAT SETTING, after input hands over the network nozzle to carry out network again, processes 55dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY) spinning cakes.Relevant technological parameter is seen table 1.
Table 1
The relevant performance of 55dtex/144f porous superfine denier polyamide 6 fullly drawn yarn (FDY)s is referring to table 2.
Table 2
Performance | Product index |
Outward appearance/excellent rate | ≥98% |
Line density | 55 |
The line density coefficient of variation (%) | ≤1.50 |
Fracture strength (cN/dex) | ≥3.65 |
The fracture strength coefficient of variation (%) | ≤8.0 |
Elongation at break (%) | 45±5% |
The elongation at break coefficient of variation (%) | ≤12.0 |
Oil content (%) | 1.0±0.20 |
Boiling water shrinkage | 9.5 |
Network degree (individual/rice) | 12±3 |
Bar evenness | ≤2.0 |
Dye uniformity (ash card) | ≥4.0 |
Polyamide 6 provided by the invention (polyamide fibre 6) fullly drawn yarn (FDY), have the upright configuration attitude of fine structure, interfibrous fine space, space three-dimensional that the specialty fibers crowd forms, sandwich construction and with the natural fabric similar in appearance.Compare its sense of touch with general fiber more soft; Resilience is better, and can overcome the easy wrinkle of natural fabric, the air-locked shortcoming of artificial fibre, and is being significantly improved than natural fabric aspect spreadability, bulkiness and the warmth retention property; Aspect style, can give the ultra well-pressed soft feeling of fabric, natural sense, glutinous and dry feeling; Added value is higher, and its fabrics feel soft is also fluffy, has specific functions such as waterproof, moisture transported permeable; Reach the purpose of snugness of fit, be widely used in fields such as chemical fibre market, middle and high end.
Water imbibition, oil absorption and cleaning function by polyamide 6 (polyamide fibre 6) fullly drawn yarn (FDY) (FDY) of technical scheme of the present invention preparation are higher, have characteristics such as anti-marine alga, the corrosion of anti-shellfish, use comparatively extensive.Be suitable for makeing high-grade fabrics such as emulation silk, linnet, peach face fabric, can be used for making mountain-climbing skiing clothes, jacket, parka etc. and other functional materials.In addition, can also reach high simulated effect with mixed yarn or different fibril, heavy twist and high fiber number long filament change fabric feeling and solid sense reaches imitative numb effect through increasing; Mix fine and add the weak twist napping with high-shrinkage filament or spandex and its and make the peach face fabric; In the arrangement of back, make the fabric thermal contraction reach highly denseization through high density designs, also can mix fine processing, make its fabrics feel soft and fluffy, have specific functions such as waterproof, moisture transported permeable, reach the purpose of snugness of fit.
Claims (3)
1. porous superfine denier polyamide 6 fullly drawn yarn (FDY)s; Specification is 55dtex/144f~75dtex/144f, it is characterized in that: it comprises that mass fraction is 0.5~5.0% additive, and described additive is methacrylate, maleic anhydride and the benzene nanometer randomcopolymer of alkene; By weight percentage; The content of methacrylate is 75~85%, and the content of maleic anhydride is 10~12%, and all the other are benzene alkene.
2. equipment for preparing porous superfine denier polyamide 6 fullly drawn yarn (FDY)s as claimed in claim 1; Based on the FDY equipment of producing conventional variety; Comprise preparatory crystallization, drying, screw rod melt extruded device, spinning manifold, measuring pump, filament spinning component, spinnerets device for spinning is characterized in that:
The additive injector is installed on the charging aperture of screw rod melt extruded device;
The Xu Leng heater is installed below spinnerets, and the heating region height is 100~120mm; The below installing ring cold wind blower of Xu Leng heater;
The boundling oil frame that oils is installed in the below of ring cold wind blower, and the distance of leaving spinnerets is 750 ± 50 mm places;
Coiling and forming device comprises first, second and the 3rd drawing roller, in advance Network device, Network device and up-coiler.
3. method for preparing porous superfine denier polyamide 6 fullly drawn yarn (FDY)s as claimed in claim 1; Comprise that the extruding of chip drying, screw rod, melt are extruded, cooling curing, the oil nozzle boundling that oils becomes tow; Tow is winding shaping through in advance network, stretching and HEAT SETTING, after input hands over the network nozzle to carry out network again, it is characterized in that process conditions are following:
(1) in polyamide 6 section, adding mass fraction is 0.5~5.0% additive; Described additive is methacrylate, maleic anhydride and the benzene nanometer randomcopolymer of alkene; By weight percentage; The content of methacrylate is 75~85%, and the content of maleic anhydride is 10~12%, and all the other are benzene alkene;
(2) section is adopted 5 grades of screw rod melt extrusion processes with after additive fully mixes in screw rod, and the temperature of 5 grades of screw rods is respectively 251 ± 2 ℃, and 259 ± 2 ℃, 262 ± 2 ℃, 261 ± 2 ℃ and 260 ± 2 ℃;
(3) melt adopts Xu Lenghe ring blowing process for cooling solidify out into strand after spinnerets is extruded as the melt thread; The heating-up temperature of Xu Lengqu is 230 ± 2 ℃; The process conditions of ring blowing are: pressure 520Pa, 21 ± 2 ℃ of wind-warm syndrome, humidity 90 ± 5%, wind speed 0.35~0.45 m/s;
(4) tow after nozzle oils boundling is imported preparatory network; Network pressure is 0.8 ± 0.05 bar in advance; Be drawn to the first normal temperature drawing roller again and the second normal temperature drawing roller stretches, their speed is respectively 3595~4080 m/min and 4150~4660 m/min; Carry out HEAT SETTING through the 3rd hot-rolling, its temperature is 135~155 ℃, and speed is 4110~4615 m/mi; Input hands over the network nozzle to carry out network again, and network pressure is 3 ± 0.05 bar, and the winding speed with 4100~4600 m/mi carries out coiling and molding again, and processing specification is the porous superfine denier polyamide 6 fullly drawn yarn (FDY) spinning cakes of 55dtex/144f~75dtex/144f.
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CN104130404A (en) * | 2014-07-23 | 2014-11-05 | 苏州大学 | Chain-end modified polyamide 6 and preparation method and application thereof |
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CN114717698A (en) * | 2022-05-06 | 2022-07-08 | 张云云 | Production method of high-bulkiness textured yarn |
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