CN104018242B - The preparation method of polyamide fibre 6 ultra micro fine denier POY long filaments - Google Patents
The preparation method of polyamide fibre 6 ultra micro fine denier POY long filaments Download PDFInfo
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- CN104018242B CN104018242B CN201410166332.7A CN201410166332A CN104018242B CN 104018242 B CN104018242 B CN 104018242B CN 201410166332 A CN201410166332 A CN 201410166332A CN 104018242 B CN104018242 B CN 104018242B
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Abstract
The invention discloses a kind of preparation method of nylon fibre, especially a kind of preparation method of polyamide fibre 6 ultra micro fine denier POY long filaments; The object of this invention is to provide the preparation method that a kind of intensity is high, elongation is good with shrinkage factor, the polyamide fibre 6 ultra micro fine denier POY long filaments that rear cloth cover slippery feel softness is consistent with even dyeing are weaved in downstream; The polyamide fibre 6 ultra micro fine denier POY long filaments that make by the designed manufacture method of the present invention, this product indices all reaches national requirements, intensity is high, elongation and shrinkage factor good, processing procedure full-rolling rate reaches more than 95%, it is soft consistent with even dyeing that rear cloth cover slippery feel is weaved in downstream, also improved production efficiency.
Description
Technical field
The invention discloses a kind of preparation method of nylon fibre, especially a kind of system of polyamide fibre 6 ultra micro fine denier POY long filamentsPreparation Method.
Background technology
Along with the raising of living standards of the people, high-grade clothing consumption ratio significantly improves, on the one hand natural fiber and animalThe amount of fiber cannot meet supply requirement, and natural fiber common intensity and elasticity can be all bad on the other hand, endurable andNot resistance to water; And some characteristics of conventional chemical fiber cannot reach, especially require fabric feeling outward appearance softness fine and closely woven, smoothPlentiful, good permeability, the product that intensity is high, the key that chemical fibre is broken through especially; This arranges nylon fibre in intensity, moisture absorptionSo sweat, warming aspect are better than other chemical fibre and have more modification advantage, but the production technology of chinlon filament has a lot of officesSex-limited, chinlon filament procedure for producing is ceaselessly being groped to improve by manufacturer both at home and abroad; Can meet product performance again can be lowThe batch production of cost-effective rate is the key of technology.
Although existing ultra tiny dawn chinlon filament has made some progress, but exist produce full-rolling rate low, underIn trip weaving process, production efficiency is low, and cloth cover flaw is many, and the shortcoming such as dye deep mixed.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide that a kind of intensity is high, elongation and shrinkage factor is good, downstreamWeave the preparation method of soft consistent with the even dyeing polyamide fibre 6 ultra micro fine denier POY long filaments of rear cloth cover slippery feel.
In order to achieve the above object, the preparation method of the designed polyamide fibre 6 ultra micro fine denier POY long filaments of the present invention, step asUnder:
The first step, the selection of PA6 section:
(1) caprolactam is produced to qualified PA6 section through polymerization, granulation, extraction, drying process, and polymerization processBe divided into two stages, first stage is pressure polymerization, and second stage is decompression polymerization; In pressure polymerization process, reactionTime is 3～4h, and the pressure of polymerizer is 1.7～1.9bar, and the flow of caprolactam is 4370kg/h, polymerizer upper and lower partTemperature be 265～270 DEG C, carboxyl value is 60; In decompression polymerization process, the reaction time is 8～9h, polymerizer temperature of lowerBe 250～253 DEG C, molecular weight is 14500, and relative viscosity is 2.46;
(2) before spinning, must be by the most of monomer in PA6 section and oligomer extraction out, to meet spinning needAsk; After dry PA6 section extraction, monomer oligomer is below 0.3%, and the temperature of extraction is advisable with≤105 DEG C, extractConcentration is 11～13%;
Second step, screw extruder: PA6 is cut into slices by the LTD screw rod handle section that is 24 with pin mixing refining head draw ratioBe melt into flowable liquid state, and LTD screw rod being provided with 6 thermals treatment zone, the heating-up temperature of the firstth district and Second Region is 255～258 DEG C, the heating-up temperature in He 4th district of San district is 259～261 DEG C, and the heating-up temperature in He 6th district of Wu district is 261～263℃；
The 3rd step, melt distributing pipe: the fluid obtaining in second step is passed through to the combined type method of salary distribution by fluid well-distributing oneThe spinning manifold that is assigned to causing is processed;
The 4th step, spinning manifold: the as-spun fibre obtaining in the 3rd step is carried out to spinning processing, selecting spinning temperatureTime, the each district of screw extruder Temperature Setting is consistent with conventional thin dawn method, and standard melt outlet temperature is 255 DEG C, molten to improveBody flows and reduces the high elastic deformation on spinning threadling, improves strand tensile property;
The 5th step, spinneret assembly: adopt the spinneret orifice footpath of 0.18mm, strand is carried out to stretch processing, control ratio is300, initial pressure of spin pack is controlled at 15MPa;
The 6th step, monomer suction: a small amount of monomer that PA6 section is produced in process of production carries out monomer suction processing,And the pressure of suction is 0.8bar;
The 7th step, cooling forming: the melt thread of extruding from spinneret is carried out to cooling curing processing in air, andWind speed is controlled at 0.4m/s, and wind-warm syndrome is 18 DEG C, and rheumatism is more than 85%;
The 8th step, two-way oiling: the mode oiling is adopted as that oil nozzle is two-way to oil, and oil applying rate is controlled at 0.58%;
The 9th step, network: strand nexus is controlled at 8/m, network pressure is 0.25MPa;
The tenth step, draw-off godet: the strand that spinning is got off stretches and the processing of balance spinning tension by draw-off godet, sprayThe speed that filament plate silk flows out and the draw ratio of godet are 300～310, and in production, winding speed is set in 4320m/min;
The 11 step, reels: winding head adopts substep precise winding mode, and winding speed is 4320m/min, winding angle controlBuilt in 5.3～6.2 °.
In the 5th step, assembly is joined sand specification three kinds, and the first specification is 40～60 orders, and the second specification is 60～80Order, the third specification is 80～120 orders.
As preferably, in the 8th step, oil nozzle is Kyocera's Special oil nozzle, and the model that finish is Japanese import isThe finish of F5178.
According to the above, the polyamide fibre 6 ultra micro fine denier POY long filaments that make by the designed manufacture method of the present invention, shouldProduct indices all reaches national requirements, intensity is high, elongation and shrinkage factor good, processing procedure full-rolling rate reaches more than 95%, knit in downstreamMake rear cloth cover slippery feel soft consistent with even dyeing, also improved production efficiency.
Detailed description of the invention
The preparation method of a kind of polyamide fibre 6 ultra micro fine denier POY long filaments that the present embodiment is described, step is as follows:
The first step, the selection of PA6 section:
(1) caprolactam is produced to qualified PA6 section through polymerization, granulation, extraction, drying process, and polymerization processBe divided into two stages, first stage is pressure polymerization, and second stage is decompression polymerization; In pressure polymerization process, reactionTime is 3.5h, and the pressure of polymerizer is 1.8bar, and the flow of caprolactam is 4370kg/h, the temperature of polymerizer upper and lower partBe 265 DEG C, carboxyl value is 60; In decompression polymerization process, the reaction time is 8h, and polymerizer temperature of lower is between 250 DEG C, pointSon amount is 14500, and relative viscosity is 2.46;
(2) before spinning, must be by the most of monomer in PA6 section and oligomer extraction out, to meet spinning needAsk; After dry PA6 section extraction, monomer oligomer is below 0.3%, and the temperature of extraction is 100 DEG C, and the concentration of extract is12％；
Second step, screw extruder: PA6 is cut into slices by the LTD screw rod handle section that is 24 with pin mixing refining head draw ratioBe melt into flowable liquid state, and LTD screw rod is provided with 6 thermals treatment zone, the heating-up temperature of the firstth district and Second Region is 256 DEG C,The heating-up temperature in He 4th district of San district is 260 DEG C, and the heating-up temperature in He 6th district of Wu district is 262 DEG C;
The 3rd step, melt distributing pipe: the fluid obtaining in second step is passed through to the combined type method of salary distribution by fluid well-distributing oneThe spinning manifold that is assigned to causing is processed;
The 4th step, spinning manifold: the as-spun fibre obtaining in the 3rd step is carried out to spinning processing, selecting spinning temperatureTime, the each district of screw extruder Temperature Setting is consistent with conventional thin dawn method, and standard melt outlet temperature is 255 DEG C, molten to improveBody flows and reduces the high elastic deformation on spinning threadling, improves strand tensile property;
The 5th step, spinneret assembly: adopt the spinneret orifice footpath of 0.18mm, strand is carried out to stretch processing, control ratio is300, it is 70 orders that assembly is joined sand specification, and initial pressure of spin pack is 15MPa;
The 6th step, monomer suction: a small amount of monomer that PA6 section is produced in process of production carries out monomer suction processing,And the pressure of suction is 0.8bar;
The 7th step, cooling forming: the melt thread of extruding from spinneret is carried out to cooling curing processing in air, andWind speed is 0.4m/s, and wind-warm syndrome is 18 DEG C, and rheumatism is 88%;
The 8th step, two-way oiling: the mode oiling is adopted as that oil nozzle is two-way to oil, and this oil nozzle is Kyocera's special oilMouth, the finish that the model that finish is Japanese import is F5178, oil applying rate is 0.58%;
The 9th step, network: strand nexus is 8/m, network pressure is 0.25MPa;
The tenth step, draw-off godet: the strand that spinning is got off stretches and the processing of balance spinning tension by draw-off godet, sprayThe speed that filament plate silk flows out and the draw ratio of godet are 305, and in production, winding speed is set in 4320m/min;
The 11 step, reels: winding head adopts substep precise winding mode, and winding speed is 4320m/min, and winding angle is6°。
The polyamide fibre 6 ultra micro fine denier POY long filaments that the present invention produces and the 24D/48F producing before, the finished product of 50D/72F fiberThe comparison of silk physical property:
Claims (3)
1. a preparation method for polyamide fibre 6 ultra micro fine denier POY long filaments, is characterized in that:
The first step, the selection of PA6 section:
(1) caprolactam is produced to qualified PA6 section through polymerization, granulation, extraction, drying process, and polymerization process is divided intoIn two stages, first stage is pressure polymerization, and second stage is decompression polymerization; In pressure polymerization process, the reaction timeBe 3～4h, the pressure of polymerizer is 1.7～1.9bar, and the flow of caprolactam is 4370kg/h, the temperature of polymerizer upper and lower partDegree is 265～270 DEG C, and carboxyl value is 60; In decompression polymerization process, the reaction time is 8～9h, and polymerizer temperature of lower is250～253 DEG C, molecular weight is 14500, and relative viscosity is 2.46;
(2) before spinning, must be by the most of monomer in PA6 section and oligomer extraction out, to meet spinning demand; DryAfter PA6 section extraction, monomer oligomer is below 0.3%, and the temperature of extraction is advisable with≤105 DEG C, and the concentration of extract exists11～13％；
Second step, screw extruder: PA6 is cut into slices by the LTD screw rod handle section melting that is 24 with pin mixing refining head draw ratioBecome flowable liquid state, and LTD screw rod is provided with 6 thermals treatment zone, the heating-up temperature of the firstth district and Second Region is 255～258 DEG C,The heating-up temperature in He 4th district of San district is 259～261 DEG C, and the heating-up temperature in He 6th district of Wu district is 261～263 DEG C;
The 3rd step, melt distributing pipe: the fluid obtaining in second step is consistent by fluid well-distributing by the combined type method of salary distributionBeing assigned to spinning manifold processes;
The 4th step, spinning manifold: spin fluid is carried out to spinning processing, in the time selecting spinning temperature, the each district of screw extruder temperatureDegree is set consistent with conventional thin dawn method, and standard melt outlet temperature is 255 DEG C, reduces on spinning threadling to improve melt flowsHigh elastic deformation, improves strand tensile property;
The 5th step, spinneret assembly: adopt the spinneret orifice footpath of 0.18mm, strand is carried out to stretch processing, control ratio is 300, groupPart initial pressure is controlled at 15MPa;
The 6th step, monomer suction: a small amount of monomer that PA6 section is produced in process of production carries out monomer suction processing, and takes outThe pressure of inhaling is 0.8bar;
The 7th step, cooling forming: the melt thread of extruding from spinneret is carried out to cooling curing processing in air, and wind speedBe controlled at 0.4m/s, wind-warm syndrome is 18 DEG C, and rheumatism is more than 85%;
The 8th step, two-way oiling: the mode oiling is adopted as that oil nozzle is two-way to oil, and oil applying rate is controlled at 0.58%;
The 9th step, network: strand nexus is controlled at 8/m, network pressure is 0.25MPa;
The tenth step, draw-off godet: the strand that spinning is got off stretches and the processing of balance spinning tension by draw-off godet, spinneretThe speed that silk flows out and the draw ratio of godet are 300～310, and in production, winding speed is set in 4320m/min;
The 11 step, reels: winding head adopts substep precise winding mode, and winding speed is 4320m/min, and winding angle is controlled at5.3～6.2°。
2. the preparation method of a kind of polyamide fibre 6 ultra micro fine denier POY long filaments according to claim 1, is characterized in that: the 5thIn step, assembly is joined sand specification three kinds, and the first specification is 40～60 orders, and the second specification is 60～80 orders, the third specificationBe 80～120 orders.
3. the preparation method of a kind of polyamide fibre 6 ultra micro fine denier POY long filaments according to claim 1, is characterized in that: the 8thIn step, oil nozzle is Kyocera's Special oil nozzle, the finish that the model that finish is Japanese import is F5178.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195934A (en) * | 2006-12-21 | 2008-06-11 | 丁尔民 | Moisture absorption polyamide 6 fibre and production method thereof |
| CN101885842A (en) * | 2010-07-09 | 2010-11-17 | 北京三联虹普纺织化工技术有限公司 | Continuous polymerization production technology for polyamide fibre 6 |
| CN102181951A (en) * | 2011-04-26 | 2011-09-14 | 常熟涤纶有限公司 | Processing method of high-strength low-shrinkage nylon 6 fine denier filament |
| CN102995147A (en) * | 2012-11-22 | 2013-03-27 | 浙江亚星纤维有限公司 | Manufacture method of ultrathin single-fiber polyamide drawn textured yarn (6DTY) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5473921A (en) * | 1977-11-25 | 1979-06-13 | Teijin Ltd | Production of extremely fine polyamide fiber |
| KR100505503B1 (en) * | 1998-12-01 | 2005-11-30 | 주식회사 효성 | Manufacturing method of gastric nylon Taesodo company by Piowai method |
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- 2014-04-23 CN CN201410166332.7A patent/CN104018242B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195934A (en) * | 2006-12-21 | 2008-06-11 | 丁尔民 | Moisture absorption polyamide 6 fibre and production method thereof |
| CN101885842A (en) * | 2010-07-09 | 2010-11-17 | 北京三联虹普纺织化工技术有限公司 | Continuous polymerization production technology for polyamide fibre 6 |
| CN102181951A (en) * | 2011-04-26 | 2011-09-14 | 常熟涤纶有限公司 | Processing method of high-strength low-shrinkage nylon 6 fine denier filament |
| CN102995147A (en) * | 2012-11-22 | 2013-03-27 | 浙江亚星纤维有限公司 | Manufacture method of ultrathin single-fiber polyamide drawn textured yarn (6DTY) |
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Address after: 314500 Fengming Street Industrial Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Fangyuan New Materials Co., Ltd. Address before: 314500 Fengming Street Industrial Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee before: The fine Co., Ltd of Zhejiang circumference polymerization |