CN103981586A - Ultra-low differential shrinkage polyamide 6 composite fibers and preparation method thereof - Google Patents
Ultra-low differential shrinkage polyamide 6 composite fibers and preparation method thereof Download PDFInfo
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- CN103981586A CN103981586A CN201410221134.6A CN201410221134A CN103981586A CN 103981586 A CN103981586 A CN 103981586A CN 201410221134 A CN201410221134 A CN 201410221134A CN 103981586 A CN103981586 A CN 103981586A
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Abstract
The invention relates to an ultra-low differential shrinkage polyamide 6 composite fibers and a preparation method thereof. In a spinning box, spinning melt is squeezed out from two metering pumps, a spinning assembly and pores of two spinneret plates, two beams of silk are formed after the squeezed spinning melt is cooled and solidified, nascent fibers are obtained after one beam of silk is performed spraying nozzle oiling, pre-netting and stretching through a first drawing roller, pre-oriented silk is obtained from the other beam of silk through spray nozzle oiling, a first silk guiding disc and a second silk guiding disc; the nascent fibers and the pre-oriented silk are simultaneously input into a doubling device and a middle wire stitching machine to stitch wire, then are dragged to a second drafting hot roller to be performed heat treatment, then are input to a wire mixing spraying nozzle through a third wire guiding disc to be composited and then are formed due to winding, the ultra-low differential shrinkage polyamide 6 composite fiber with 10 % to 20 % boiling water differential shrinkage rate is obtained, structural characters of small silk rings, three-dimensional multilayer gaps and capillary suction cores are generated after the thermal treatment. The ultra-low differential shrinkage polyamide 6 composite fibers have the advantages of being good in plush imitation effect and rebound resilience, having potential water absorption moisture guiding and breathability functions and the like.
Description
Technical field
The present invention relates to a kind of polyamide 6 composite fibre and preparation method thereof, particularly a kind of boiling water differential shrinkage rate reaches ultralow different shrinkage polyamide 6POY/FDY composite fibre of 10%～20% and preparation method thereof, belongs to chemical fibre technical field.
Background technology
At present, the ready-made clothes that on domestic and international market, corium lint is made are expensive, occupy for a long time up-market, but the ready-made clothes that use simulate wool technology for cashmere to make are being worn the aspect such as performance, aesthetic appearance all no less than corium lint, this external storage of changing according to the season, cleaning aspect, artificial leather lint product has more convenient storage, clean cheap advantage, therefore, both at home and abroad in the research aspect simulate wool technology for cashmere with apply in the ascendant.
At present, the different shrinkage polyamide 6POY/FDY composite fibre of simulate wool suede and products thereof of preparing of maturation mainly prepares by the following approach of following several technology both at home and abroad, the general two step method composite technology route that adopts, as first adopted high speed spinning processing to make polyamide 6 pre-oriented yarn (POY) and spin-drawing one-step method makes polyamide 6 fullly drawn yarn (FDY) (FDY), on set composite, POY and FDY are carried out to Compound Machining again, prepare differential shrinkage rate at 25%～35% polyamide 6 POY/FDY composite fibre.
All there is following shortcoming in the above-mentioned technological process of production, mainly contains: 1, processing process length and processing technology complexity; 2, speed of production is low, generally at 2500m/min～3500m/min, causes yielding poorly, and efficiency is low, and production cost is high; 3, conventional method makes product network uniformity effect is poor, it is inhomogeneous to dye, the product appearance making of processing poor, cannot production high-grade fabric and fabric; 4, conventional method makes composite fibre simulate wool velvet effect is poor and dye inhomogeneously, and after its textile dyeing, easily produce and show money or valuables one carries unintentionally, and owing to being that two-step method causes between product batches quality unstable; 5, the daiamid-6 fiber shrinkage factor that traditional handicraft is produced, because the restriction of technological process cannot further reduce again, causes the poor dimensional stability of fabric, flexible type after washing or high temperature.So far yet there are no relevant differential shrinkage rate is both at home and abroad the relevant report of ultralow different shrinkage polyamide 6POY/FDY composite fibre of 10%～20% and preparation method thereof.
Summary of the invention
Problem solved by the invention is the deficiencies such as the cost that has the technical existence of simulate wool velvet effect in preparation for existing polyamide 6 POY/FDY composite fibre is high, poor dimensional stability, by install fiber stranding device, the first draw-off godet and second spinning reel, middle Network device device and interlacing jet nozzle device additional on existing daiamid-6 fiber production equipment, and adjust seal wire the Silk Road and process conditions, it is ultralow different shrinkage polyamide 6 POY/FDY composite fibres of 10%～20% and preparation method thereof that a kind of shrinkage factor is provided.
For achieving the above object, the technical solution used in the present invention is to provide a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres, enters spinning manifold and carry out spinning after dry sliced polyamide 6 employing screw rod melt extrusion processes heating and melting is filtered; Spinning technique adopts two measuring pumps, respectively corresponding two cover filament spinning component and two blocks of spinneretss; Melt is extruded respectively from two spinnerets micropores, then forms two synnemas through lateral blowing cooling curing technique, and a synnema is wherein oiled, after network, the first drawing roller stretching, obtains as-spun fibre in advance through nozzle; Another synnema through nozzle oil, the first draw-off godet and second spinning reel make pre-oriented yarn; By the as-spun fibre obtaining with pre-oriented yarn is input to fiber stranding device and middle Network device carries out network simultaneously, after drawing again and heat-treating to the second drawing-off hot-rolling, being input to interlacing jet nozzle through the 3rd draw-off godet carries out compound, through coiling and molding technique, obtain a kind of ultralow different shrinkage polyamide 6 composite fibres again.
A preferred version of the present invention is: screw rod melt extrusion processes, and adopt screw rod 6 to distinguish section melt extruded, the temperature of 6 grades of screw rods is followed successively by 250 ± 2 DEG C, and 259 ± 2 DEG C, 262 ± 2 DEG C, 264 ± 2 DEG C, 266 ± 2 DEG C and 265 ± 2 DEG C; The temperature of being carried out spinning by the melt input spinning manifold of screw rod heating and melting is 260 ± 2 DEG C, and screw extruding head pressure is 155bar.Described lateral blowing cooling curing technique, wind speed is 0.30m/s～0.60m/s, and wind-warm syndrome is 19 DEG C ± 2 DEG C, and humidity is 90% ± 5%.The preparation technology of as-spun fibre, the pressure of pre-network is 0.70～1.10bar, the speed of the first drawing roller is 3300m/min～3900m/min.The preparation technology of pre-oriented yarn, the speed of the first draw-off godet is 3900m/min～4500m/min, the speed of second spinning reel is 4000m/min～4600m/min.The speed of the second drawing-off hot-rolling is 4000m/min～4600m/min, and temperature is 110 DEG C～160 DEG C.Coiling and molding technique, winding speed is 4000m/min～4500m/min.
Technical solution of the present invention also comprises provides a kind of polyamide 6 composite fibre, and its specification is 110dtex～167dtex/48f～144f; Fracture strength is 2.5cN/dtex～4.0cN/dtex, and elongation at break is 20%～40%, and boiling water differential shrinkage rate is 10%～20%, and network degree is 20/meter～30/meter.
The present invention adopts spinning interlacing one-step method to prepare ultralow different shrinkage polyamide 6POY/FDY composite fibre, the polyamide 6 POY of two kinds of different structure characteristics that spinning is made, FDY fiber carry out the compound and coiling and molding operation of online interlacing, prepare and have the polyamide 6 POY/FDY composite fibre that ultralow differential shrinkage rate is 10%～20% characteristic.This composite fibre after heat treatment, can produce small wire ring and 3-dimensional multi-layered space, capillary suction cored structure feature between fiber, makes its fabric have the characteristics such as the ventilative effect of good simulate wool velvet effect, resilience and moisture absorption.
Compared with prior art, the invention has the beneficial effects as follows:
1, a kind of technology of preparing polyamide 6 POY/FDY composite fibre provided by the invention, use same set of spinning melting plant, by dry sliced polyamide 6 melting, melt, by after identical melt distributing pipe, injects two cover filament spinning components by two cover measuring pumps respectively, filament spinning component designs respectively according to spun description, via identical spinning-side blowing cooling forming, to reeling, stretching interlacing is compound again, and the melt uniformity obtaining is good, production procedure is short, constant product quality.
2, the present invention by installing fiber stranding device, the first draw-off godet and second spinning reel, middle Network device device and interlacing jet nozzle device additional on existing daiamid-6 fiber production equipment, adjust seal wire the Silk Road, realize simplification production process flow process, reduce costs, energy efficient, improves the quality of products and the object of added value.
3, to have ultralow differential shrinkage rate be 10%～20% characteristic to ultralow different shrinkage polyamide 6POY/FDY composite fibre of the present invention, this composite fibre after heat treatment can produce small wire ring and 3-dimensional multi-layered space, capillary is inhaled cored structure feature, and its fabric has the characteristics such as the ventilative and wet guiding function of good simulate wool velvet effect, resilience and potential moisture absorption.
4, the present invention is starkly lower than traditional mode of production flow process from process route, realized that flow process is short, production capacity is large, recruitment is few, energy consumption is low, and comprehensive production cost is low, added value is high, and meeting the trend of the suitability for industrialized production of current energy-saving and emission-reduction, is that traditional handicraft is unsurpassable.The present invention adopts after above-mentioned technique, business accounting: the reduction of (1) production cost, is mainly manifested in: adopt single step spining, operation reduces, can save approximately 200 yuan/t of cost of labor, production procedure is simplified, and water, electricity and gas consumption still reduces more, approximately 300 yuan/t, adopt One-step production, the consumption of links declines, and reduces costs approximately 60 yuan/t, other fees, as the expenses such as maintenance, fixed guarantors the approximately 80 yuan/t that declines, add up to integrated cost approximately to reduce about 640 yuan/t of unit; (2) cost of investment reduces, be in particular in: than two step method device with add that spring-go network device is few invests 5,000,000 yuan, factory building and land used drop into can reduce by 1,000,000 (by 50,000 tons/year of scales), increase cooling device in spinning and 900,000 yuan, the compound interlacing device of reeling, add up to original equipment and factory building to drop into conservative estimation and can reduce 5,100,000 yuan.Therefore, the social benefit of economic benefit of the present invention and energy-saving and emission-reduction is fairly obvious.
Brief description of the drawings
Fig. 1 is a kind of process chart of preparing ultralow different shrinkage polyamide 6 POY/FDY composite fibres that the embodiment of the present invention provides.
Detailed description of the invention
The invention reside in a kind of technical scheme of preparing ultralow different shrinkage polyamide 6POY/FDY composite fibre is provided, below in conjunction with drawings and Examples, technical solution of the present invention is further elaborated.
Embodiment 1
The present embodiment provide a kind of specification be 136dtex/96f(wherein: 43dtex/48f fullly drawn yarn (FDY), 93dtex/48f pre-oriented yarn) prepare the method for ultralow different shrinkage polyamide 6 POY/FDY composite fibres, its technological process is referring to accompanying drawing 1, process conditions are as follows:
After being filtered, dry the polyamide 6 that reaches spinning technique requirement section input screw rod heating and melting enters spinning manifold, spinning melt is by extruding in two measuring pumps, filament spinning component and two spinnerets micropores, cooling curing forms two synnemas, and wherein a synnema oils, pre-network, after the first drawing roller stretches, obtains as-spun fibre through nozzle; Another bundle through oil nozzle oil, the first draw-off godet and second spinning reel make pre-oriented yarn, then as-spun fibre and pre-oriented yarn are inputted to fiber stranding device and middle Network device network simultaneously, being drawn to the second drawing-off hot-rolling heat-treats again, then carry out compound through the 3rd draw-off godet input interlacing jet nozzle, and coiling and molding, make ultralow different shrinkage polyamide 6POY/FDY composite fibre.Relevant specification is that 136dtex/96f prepares ultralow different shrinkage polyamide 6 POY/FDY composite fibre technological parameters in table 1, and relevant performance is in table 2.
The ultralow different shrinkage polyamide 6 POY/FDY composite fibre technological parameters of table 1
Table 2: ultralow different shrinkage polyamide 6POY/FDY composite fibre performance
Embodiment 2
The present embodiment provide a kind of specification be 110dtex/96f(wherein: 43dtex/48f fullly drawn yarn (FDY), 67dtex/48f pre-oriented yarn) prepare the method for ultralow different shrinkage polyamide 6 POY/FDY composite fibres, its technological process is referring to accompanying drawing 1.Process conditions are as follows:
After being filtered, dry the polyamide 6 that reaches spinning technique requirement section input screw rod heating and melting enters spinning manifold, spinning melt is by extruding in two measuring pumps, filament spinning component and two spinnerets micropores, cooling curing forms two synnemas, and wherein a synnema oils, pre-network, after the first drawing roller stretches, obtains as-spun fibre through nozzle; Another bundle through oil nozzle oil, the first draw-off godet and second spinning reel make pre-oriented yarn, then as-spun fibre and pre-oriented yarn are inputted to fiber stranding device and middle Network device network simultaneously, being drawn to the second drawing-off hot-rolling heat-treats again, then carry out compound through the 3rd draw-off godet input interlacing jet nozzle, and coiling and molding, make ultralow different shrinkage polyamide 6POY/FDY composite fibre.Relevant specification is that 110dtex/96f prepares ultralow different shrinkage polyamide 6 POY/FDY composite fibre technological parameters in table 3, and relevant performance is in table 4.
The ultralow different shrinkage polyamide 6 POY/FDY composite fibre technological parameters of table 3
Table 4: ultralow different shrinkage polyamide 6 POY/FDY composite fibre performances
Claims (10)
1. prepare the method for ultralow different shrinkage polyamide 6 composite fibres for one kind, after dry sliced polyamide 6 employing screw rod melt extrusion processes heating and melting is filtered, enter spinning manifold and carry out spinning, it is characterized in that: spinning technique adopts two measuring pumps, respectively corresponding two cover filament spinning component and two blocks of spinneretss; Melt is extruded respectively from two spinnerets micropores, then forms two synnemas through lateral blowing cooling curing technique, and a synnema is wherein oiled, after network, the first drawing roller stretching, obtains as-spun fibre in advance through nozzle; Another synnema through nozzle oil, the first draw-off godet and second spinning reel make pre-oriented yarn; By the as-spun fibre obtaining with pre-oriented yarn is input to fiber stranding device and middle Network device carries out network simultaneously, after drawing again and heat-treating to the second drawing-off hot-rolling, being input to interlacing jet nozzle through the 3rd draw-off godet carries out compound, through coiling and molding technique, obtain a kind of ultralow different shrinkage polyamide 6 composite fibres again.
2. a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres according to claim 1, it is characterized in that: screw rod melt extrusion processes, adopt screw rod 6 to distinguish section melt extruded, the temperature of 6 grades of screw rods is followed successively by 250 ± 2 DEG C, 259 ± 2 DEG C, 262 ± 2 DEG C, 264 ± 2 DEG C, 266 ± 2 DEG C and 265 ± 2 DEG C; The temperature of being carried out spinning by the melt input spinning manifold of screw rod heating and melting is 260 ± 2 DEG C, and screw extruding head pressure is 155bar.
3. a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres according to claim 1, is characterized in that: described lateral blowing cooling curing technique, and wind speed is 0.30m/s～0.60m/s, and wind-warm syndrome is 19 DEG C ± 2 DEG C, and humidity is 90% ± 5%.
4. a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres according to claim 1, it is characterized in that: the preparation technology of as-spun fibre, the pressure of pre-network is 0.70～1.10bar, and the speed of the first drawing roller is 3300m/min～3900m/min.
5. a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres according to claim 1, it is characterized in that: the preparation technology of pre-oriented yarn, the speed of the first draw-off godet is 3900m/min～4500m/min, and the speed of second spinning reel is 4000m/min～4600m/min.
6. a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres according to claim 1, is characterized in that: the speed of the second drawing-off hot-rolling is 4000m/min～4600m/min, and temperature is 110 DEG C～160 DEG C.
7. a kind of method of preparing ultralow different shrinkage polyamide 6 composite fibres according to claim 1, is characterized in that: coiling and molding technique, winding speed is 4000m/min～4500m/min.
8. ultralow different shrinkage polyamide 6 composite fibres of one that obtain by claim 1 preparation method.
9. ultralow different shrinkage polyamide 6 composite fibres of one according to claim 8, is characterized in that: its specification is 110dtex～167dtex/48f～144f.
10. ultralow different shrinkage polyamide 6 composite fibres of one according to claim 8 or claim 9, it is characterized in that: its fracture strength is 2.5cN/dtex～4.0cN/dtex, elongation at break is 20%～40%, and boiling water differential shrinkage rate is 10%～20%, and network degree is 20～30/meter.
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| CN104562250A (en) * | 2014-11-27 | 2015-04-29 | 杭州师范大学 | Micro-porous fine denier nylon 6 three-difference fiber and preparation method and application thereof |
| CN106435794A (en) * | 2016-11-29 | 2017-02-22 | 中维化纤股份有限公司 | Preparation technology for whitening low-shrinking medium-fine nylon yarns |
| CN108728974A (en) * | 2018-06-21 | 2018-11-02 | 福建恒捷实业有限公司 | A kind of production method of the imitative hair nylon fibre of imitative fiber crops |
| CN111621904A (en) * | 2019-02-28 | 2020-09-04 | 福懋兴业股份有限公司 | Elastic fabric containing nylon 6,6 crimped fiber and manufacturing method thereof |
| CN118581612A (en) * | 2024-08-06 | 2024-09-03 | 桐昆集团浙江恒通化纤有限公司 | Water storage fiber for pen and preparation method thereof |
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| CN118581612A (en) * | 2024-08-06 | 2024-09-03 | 桐昆集团浙江恒通化纤有限公司 | Water storage fiber for pen and preparation method thereof |
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Application publication date: 20140813 |