CN102517679B - The fine denier polyamide fiber 6 pre-oriented yarn of a kind of porous, preparation method and equipment thereof - Google Patents

The fine denier polyamide fiber 6 pre-oriented yarn of a kind of porous, preparation method and equipment thereof Download PDF

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CN102517679B
CN102517679B CN201110432639.3A CN201110432639A CN102517679B CN 102517679 B CN102517679 B CN 102517679B CN 201110432639 A CN201110432639 A CN 201110432639A CN 102517679 B CN102517679 B CN 102517679B
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oriented yarn
additive
porous
polyamide fiber
fine denier
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CN102517679A (en
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管新海
李海涛
赵广兵
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WUJIANG YATAI CHEMICAL TEXTILE CO Ltd
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Suzhou University
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Abstract

The present invention relates to a kind of melt spinning technology of high molecular polymer, the fine denier polyamide fiber 6 pre-oriented yarn of a kind of porous, preparation technology and equipment thereof are provided.The randomcopolymer additive added with methacrylate, maleic anhydride and benzene alkene is melt extruded in step at screw rod; The fracture strength of the pre-oriented yarn obtained is 3.45 ± 0.25cN/dex, and elongation at break is 80 ± 20%.Present invention improves over conventional FDY equipment and relevant manufacturing condition, effectively control the supramolecular structure of the adjustment of aggregated structure in spinneret draft forming process, high order orientation and crystallization, further raising melt mixed uniformity and pressure stability, winding tensile and the bar of effective adjustment and control strand do uneven rate, improve the after-drawing performance of porous micro Denier polyamide fibre 6POY.The product that this technical scheme provides can reach the maximization of company interest.

Description

The fine denier polyamide fiber 6 pre-oriented yarn of a kind of porous, preparation method and equipment thereof
Technical field
The present invention relates to a kind of melt spinning technology of high molecular polymer, particularly a kind of technique and equipment thereof preparing the fine denier polyamide fiber 6 pre-oriented yarn of porous.
Background technology
Polyamide fibre 6 pre-oriented yarn of conventional variety can be processed to fullly drawn yarn (FDY), stretch textured yarn and air-textured yarn, there is a series of premium properties, be widely used in the life of the people and socioeconomic various aspects, its main application can be divided into three large fields, i.e. clothes use, industry is used and decorative carpet is used.Clothes, with mainly as dress material, occupy stable market in sweat shirt, swimsuit, gym wear, hosiery etc., and growing; Industry is with relating to the fields such as industrial or agricultural, transportation, fishery; The fields such as household, hotel, upholstery are mainly used in carpet.
At present, the main technology for high speed spinning approach that adopts prepares polyamide fibre 6 pre-oriented yarn conventional variety both at home and abroad, there are some shortcomings, as thick in filament number, antistatic behaviour, dyeability and moisture absorbability and moisture retentivity, ventilative dry-ness poor, pleasant softness is also poor etc., has had a strong impact on its snugness of fit.Therefore, how to utilize existing FDY device fabrication stable performance and can the porous micro Denier polyamide fibre 6POY of flexibility operation development chemical fiber factory be significant.
Summary of the invention
The object of the invention is the deficiency existed to solve prior art, by transformation FDY device fabrication and adjustment production technology, there is provided a kind of there is superelevation extension property, easily contaminate level dyeing, evenly dye-uptake and high-color rendering, the fine denier polyamide fiber 6 pre-oriented yarn of functionalization porous that pliability is good, and technology and equipment.
In order to achieve the above object, the technical solution used in the present invention is: provide a kind of porous fine denier polyamide fiber 6 pre-oriented yarn, specification is 75dtex/144f ~ 110dtex/144f, it comprises the additive that mass fraction is 0.5 ~ 5.0%, described additive is the nanometer randomcopolymer of methacrylate, maleic anhydride and benzene 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; The fracture strength of pre-oriented yarn is 3.45 ± 0.25cN/dex, and elongation at break is 80 ± 20%.
A kind of equipment preparing the fine denier polyamide fiber 6 pre-oriented yarn of porous of the present invention, based on the FDY equipment 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 and coiling and forming device; The charging aperture of described screw rod melt extruded device installs additive injector; Described cooling curing device is Xu Lenghe ring quenching; Install Xu Leng heater in the below of spinnerets, heating region height is 100 ~ 120mm; The below installing ring cold wind blower of Xu Leng heater; The boundling oil frame that oils is arranged on the below of ring cold wind blower, and the distance leaving spinnerets is 800 ± 50mm place; Coiling and forming device comprises first, second godet roller, pre-Network device and up-coiler, and described pre-Network device is placed in the centre of the first godet roller and the second godet roller.
Prepare a method for the fine denier polyamide fiber 6 pre-oriented yarn of porous of the present invention, comprise chip drying, melt extruded, melt extrusion, cooling curing, oil nozzle oil and winding shaping operation, process conditions are as follows:
1, in chinlon 6 section, the additive that mass fraction is 0.5 ~ 5.0% is added, described additive is the nanometer randomcopolymer of methacrylate, maleic anhydride and benzene alkene, 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;
2, after section fully mixes in screw rod with additive, adopt 5 grades of screw rod melt extrusion processes, the temperature of 5 grades of screw rods is respectively 248 ± 2 DEG C, 258 ± 2 DEG C, 260 ± 2 DEG C, 259 ± 2 DEG C and 259 ± 2 DEG C;
3, melt is extruded as after melt stream through spinnerets, adopts Xu Lenghe ring quenching technique to solidify out into strand; The heating-up temperature of Xu's device for cooling is 230 ± 2 DEG C; The process conditions of ring blowing are: pressure 550Pa, wind-warm syndrome 21 ± 2 DEG C, humidity 90 ± 5%, wind speed 0.40 ~ 0.50m/s;
4, the tow input speed after nozzle oils boundling is first godet roller of 3945 ~ 4455m/min, after the pressure pre-Network device that is 0.7 ± 0.05bar carries out pre-network, admission velocity is second godet roller of 4050 ~ 4565m/min again, and godet roller is cold roller; Carry out coiling and molding with the winding speed of 4000 ~ 4500m/mi, make the porous fine denier polyamide fiber 6 pre-oriented yarn spinning cake that specification is 75dtex/144f ~ 110dtex/144f.
Principle of the present invention is: adopt conventional polyamide 6 (polyamide fibre 6) raw material, add additive in the feed, make it be distributed in polyamide 6 (polyamide fibre 6) melt even and finely, the effect produced is: (1) destroys the regularity of the structurally ordered arrangement of fiber Middle molecule, reduces the macromolecular degree of orientation and degree of crystallinity; (2) on polyamide 6 (polyamide fibre 6) strand, steric hindrance is formed to orientation and crystallization, the supramolecular structure of low crystalline rate and low rate of orientation is obtained under high speed spinning speed, fiber-wall-element model and crystallization development on high-speed spinning silk thread are effectively suppressed, orientation, the degree of crystallinity of spinning Cheng Yingli and fiber can be controlled; (3) in fibroplastic process, form micro-fiber structure, unnecessaryly under making these microfibers partly absorb high winding speed spin Cheng Yingli, thus make the orientation under high winding speed and crystallization obtain suppression.With this understanding, adopt suitable spinning and stretch forming process conditions, microfiber is formed in fibroplastic process, the microfiber added is unnecessary under partly absorbing high winding speed spins Cheng Yingli, simultaneously, stress in polyamide 6 (polyamide fibre 6) matrix reduces effectively, and therefore, the orientation under high winding speed and crystallization obtain suppression by additive.In technical solution of the present invention, the supramolecular structure with crystallization in controlled working process, orientation can be adjusted according to the addition of additive, adopt rational process conditions, realize obtaining there are superelevation extension property, the functionalization thin dawn easily contaminating the function admirables such as level dyeing, evenly dye-uptake and high-color rendering, pliability are good, micro Denier, ultra-fine denier polyamide fiber 6 series of products.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention have selected a kind of polymeric additive efficiently, at a low price, adopt rational adding rate and optimum addition, improve device and relevant manufacturing condition, effectively control the supramolecular structure of the adjustment of aggregated structure in spinneret draft forming process, high order orientation and crystallization; Meanwhile, by transforming FDY device fabrication, improve melt mixed uniformity and pressure stability further, winding tensile and the bar of effective adjustment and control strand do uneven rate, improve the after-drawing performance of porous micro Denier polyamide fibre 6POY.
3, the existing FDY device resource of Appropriate application of the present invention, the flexibility design adjusted by the Silk Road and the process conditions of choose reasonable the best, produce 75dtex/144f ~ 110dtex/144f porous fine denier polyamide fiber 6 pre-oriented yarn product, have that production cost is low, output is high, produce and be easy to control, good product quality, added value high.The product specific area provided is higher, its fiber construct has capillary core sucting action and forms water suction wet guiding function, has good super high-emulation silk effect, its fabric is had premium properties such as moisture absorption is ventilative, washing shrinkage low, painted strong, folding is good, rotproofness is strong, the plentiful softness of sense of touch, quick-drying washable, non-ironing, drapability is good, comfortableness is good.
Detailed description of the invention
Below in conjunction with embodiment, technical solution of the present invention will be further described.
Embodiment 1
The present embodiment provides a kind of 75dtex/144f porous fine denier polyamide fiber 6 pre-oriented yarn.It is based on the FDY equipment producing conventional variety, comprise pre-crystallized, dry, screw rod melt extruded device, the charging aperture of screw rod melt extruded device is installed additive injector, spinning manifold, measuring pump, filament spinning component, spinnerets device for spinning, install Xu Leng heater in the below of spinnerets, heating region height is 100 ~ 120mm; The below installing ring cold wind blower of Xu Leng heater; The boundling oil frame that oils is arranged on the below of ring cold wind blower, and the distance leaving spinnerets is 800 ± 50mm place; Coiling and forming device comprises first, second godet roller, pre-Network device and up-coiler, and described pre-Network device is placed in the centre of the first godet roller and the second godet roller.
Production technology and condition as follows:
Chinlon 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 fibre 6 enters screw rod, the additive that mass fraction is 0.5% is added in chinlon 6 section, described additive is methacrylate, the nanometer randomcopolymer of maleic anhydride and benzene alkene, by weight percentage, the content of methacrylate is 75%, the content of maleic anhydride is 10%, all the other are benzene alkene, after section fully mixes in screw rod with additive, adopt 5 grades of screw rod melt extrusion processes, heating and melting, through mixing, metering, spinning manifold is entered after filtration, through measuring pump, filament spinning component, spinnerets is extruded as melt stream, strand is become at ring quenching air set through Xu Leng, then to oil boundling through nozzle, spinning shaft is drawn to the first godet roller, then the second godet roller is drawn to again after carrying out pre-network, coiling and molding is carried out through coiler device with 4000m/min speed, make 75dtex/144f porous fine denier polyamide fiber 6 pre-oriented yarn (POY) spinning cake.
75dtex/144f porous fine denier polyamide fiber 6 pre-oriented yarn technological parameter is in table 1; 75dtex/144f porous micro Denier polyamide fibre 6POY performance is in table 2.
Table 1
Table 2
Performance Product index
Outward appearance/excellent rate ≥98%
Line density (dtex) 75~110
The line density coefficient of variation (%) 1.50~1.90
Fracture strength (cN/dex) 3.45±0.25
Elongation at break (%) 80±20
Oil content (%) 0.57±0.03
Bar evenness 0.85±0.05
In the FDY technological process of routine, polyamide fibre 6(PA6) cut into slices through pre-crystallized, after drying, send into screw rod melting, compression and homogenising, enter spinning manifold, through measuring pump, filament spinning component, spinnerets is extruded as melt stream, and at the constant temperature of shock chamber, strand is solidified out in constant humidity lateral blowing cooling-air, spinning shaft is left after nozzle oils boundling, carry out after pre-network through pre-Network device, be drawn to the first normal temperature drawing roller roller and the second normal temperature drawing roller roller stretches, HEAT SETTING is carried out through the 3rd hot-rolling, input interlacing jet nozzle again and carry out interlacing, then coiling and molding is carried out with 4200m/min speed through coiler device, make the fine denier polyamide fiber 6 fullly drawn yarn (FDY) of 100Den/144f porous.In the present invention, after conventional FDY scrap build, the technological process of producing POY is: the melt stream that spinnerets is extruded, Xu Lenghe ring quenching is adopted to solidify out into strand, spinning shaft is left after nozzle oils boundling, tow is inputted the first cold godet roller again, carry out after pre-network through pre-Network device, enter the second cold godet roller, carry out coiling and molding with 4000m/mi ~ 4500m/mi winding speed again, make 75dtex/144f ~ 110dtex/144f porous fine denier polyamide fiber 6 pre-oriented yarn (POY) spinning cake.
Compared with conventional FDY equipment, the melt stream that spinnerets in former FDY equipment is extruded by the present invention is through constant temperature, the constant humidity lateral blowing process for cooling of shock chamber, change Xu Lenghe ring quenching into, move down the location-appropriate that melt is solidified, increase the cooling length of strand, delay, control macromolecular orientation and crystallization, be conducive to wire strip forming; Adopt ring quenching technique, improve the uniformity of cooling, overcome the defect that tow easily forms skin-core structure in high-speed motion.Simultaneously, the present invention also makes first, second normal temperature drawing roller into the first cold godet roller and the second cold godet roller, and the pre-Network device before the first normal temperature drawing roller roller in FDY is changed be placed between first, second cold godet roller, cancel the 3rd hot-rolling, point roll dies and interlacing jet nozzle, and the speed of coiler device is made into carry out coiling and molding with 4000m/mi ~ 4500m/mi winding speed, make 75dtex/144f ~ 110dtex/144f porous fine denier polyamide fiber 6 pre-oriented yarn (POY) spinning cake.Utilizing existing FDY production equipment, not only can produce FDY but also can produce POY product, is the FDY production equipment with product flexibility; And the process conditions of the flexibility design adjusted by the Silk Road and choose reasonable the best, provide a kind of novel porous fine denier polyamide fiber 6 pre-oriented yarn preparation technology, this production technology is simple, with low cost, the porous micro Denier polyamide fibre 6POY product produced has stable performance, bar does uniformity and colouring property is good, flexible operation, added value high, produce the fine denier polyamide fiber 6 pre-oriented yarn of 75dtex/144f ~ 110dtex/144f porous by technical scheme provided by the invention, the maximization of company interest can be reached.

Claims (2)

1. prepare the equipment of the fine denier polyamide fiber 6 pre-oriented yarn of porous for one kind, based on the FDY equipment 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 and coiling and forming device, is characterized in that:
Described porous fine denier polyamide fiber 6 pre-oriented yarn specification is 75dtex/144f ~ 110dtex/144f, comprise the additive that mass fraction is 0.5 ~ 5.0%, described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, by weight percentage, the content of methacrylate is 75 ~ 85%, the content of maleic anhydride is 10 ~ 12%, and all the other are styrene; The fracture strength of pre-oriented yarn is 3.45 ± 0.25cN/dex, and elongation at break is 80 ± 20%;
The charging aperture of described screw rod melt extruded device installs additive injector;
Described cooling curing device is Xu Lenghe ring quenching; Install Xu Leng heater in the below of spinnerets, heating region height is 100 ~ 120mm; The below installing ring cold wind blower of Xu Leng heater;
The boundling oil frame that oils is arranged on the below of ring cold wind blower, and the distance leaving spinnerets is 800 ± 50mm place;
Coiling and forming device comprises first, second godet roller, pre-Network device and up-coiler, and described pre-Network device is placed in the centre of the first godet roller and the second godet roller.
2. prepare the method for the fine denier polyamide fiber 6 pre-oriented yarn of porous for one kind, comprise chip drying, melt extruded, melt extrusion, cooling curing, oil nozzle oils and winding shaping operation, it is characterized in that: described porous fine denier polyamide fiber 6 pre-oriented yarn specification is 75dtex/144f ~ 110dtex/144f, comprise the additive that mass fraction is 0.5 ~ 5.0%, described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, by weight percentage, the content of methacrylate is 75 ~ 85%, the content of maleic anhydride is 10 ~ 12%, all the other are styrene, the fracture strength of pre-oriented yarn is 3.45 ± 0.25cN/dex, and elongation at break is 80 ± 20%, and process conditions are as follows:
(1) in chinlon 6 section, the additive that mass fraction is 0.5 ~ 5.0% is added, described additive is methacrylate, maleic anhydride and cinnamic nanometer randomcopolymer, by weight percentage, the content of methacrylate is 75 ~ 85%, the content of maleic anhydride is 10 ~ 12%, and all the other are styrene;
(2), after section fully mixes in screw rod with additive, adopt 5 grades of screw rod melt extrusion processes, the temperature of 5 grades of screw rods is respectively 248 ± 2 DEG C, 258 ± 2 DEG C, 260 ± 2 DEG C, 259 ± 2 DEG C and 259 ± 2 DEG C;
(3) melt is extruded as after melt stream through spinnerets, adopts Xu Lenghe ring quenching technique to solidify out into strand; The heating-up temperature of Xu's device for cooling is 230 ± 2 DEG C; The process conditions of ring blowing are: pressure 550Pa, wind-warm syndrome 21 ± 2 DEG C, humidity 90 ± 5%, wind speed 0.40 ~ 0.50m/s;
(4) the tow input speed after nozzle oils boundling is first godet roller of 3945 ~ 4455m/min, after the pressure pre-Network device that is 0.7 ± 0.05bar carries out pre-network, admission velocity is second godet roller of 4050 ~ 4565m/min again, and godet roller is cold roller; Carry out coiling and molding with the winding speed of 4000 ~ 4500m/min, make the porous fine denier polyamide fiber 6 pre-oriented yarn spinning cake that specification is 75dtex/144f ~ 110dtex/144f.
CN201110432639.3A 2011-12-21 2011-12-21 The fine denier polyamide fiber 6 pre-oriented yarn of a kind of porous, preparation method and equipment thereof Active CN102517679B (en)

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CN102995146B (en) * 2012-11-22 2015-03-11 浙江亚星纤维有限公司 Method for manufacturing fine denier porous light interlaced nylon 6 high stretch yarns
CN102995147B (en) * 2012-11-22 2015-03-11 浙江亚星纤维有限公司 Manufacture method of ultrathin single-fiber polyamide drawn textured yarn (6DTY)
CN105839247A (en) * 2016-06-07 2016-08-10 苏州龙杰特种纤维股份有限公司 FDY equipment for producing POY fibers and POY fiber production method of FDY equipment
CN106637448B (en) * 2016-12-13 2018-12-11 苏州金纬化纤工程技术有限公司 A kind of chemical fiber nylon long filament FDY electrical control gear

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CN101014731A (en) * 2004-05-25 2007-08-08 圣戈班建筑材料股份有限公司 Loaded polymer fibre, method for the production thereof, use of the same, and composition comprising such fibres
CN101074503A (en) * 2006-05-16 2007-11-21 东丽纤维研究所(中国)有限公司 Polymer-alloy fibre and its production
CN102161756A (en) * 2011-04-14 2011-08-24 杭州师范大学 Nylon-6 resin, nylon-6 filament and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN1191906A (en) * 1997-02-25 1998-09-02 齐默尔股份公司 Process for processing polymer blends into filaments
CN101014731A (en) * 2004-05-25 2007-08-08 圣戈班建筑材料股份有限公司 Loaded polymer fibre, method for the production thereof, use of the same, and composition comprising such fibres
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CN102161756A (en) * 2011-04-14 2011-08-24 杭州师范大学 Nylon-6 resin, nylon-6 filament and preparation method thereof

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