CN101089266A - Manufacturing method of antithermal shrink polyster high strength yarn - Google Patents
Manufacturing method of antithermal shrink polyster high strength yarn Download PDFInfo
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- CN101089266A CN101089266A CN 200710069918 CN200710069918A CN101089266A CN 101089266 A CN101089266 A CN 101089266A CN 200710069918 CN200710069918 CN 200710069918 CN 200710069918 A CN200710069918 A CN 200710069918A CN 101089266 A CN101089266 A CN 101089266A
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- antithermal
- polyster
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- strength yarn
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Abstract
The present invention relates to a production method of anti-thermoshrinking polyester high-tenacity yarn. Said production method includes the following several steps: preparing polyester chip raw material, solid-phase condensation polymerization, extrusion by melting, cooling by cross air blasting, multi-stage hot roll drawing, high-temperature tensionless setting and winding-forming so as to obtain the invented anti-thermoshrinking polyester high-tenacity yarn whose tenacity is 6.5-7.2 cN/dtex, dry heat shrinkage rate is 0.2-1.0% and elongation percentage is 22-25%.
Description
Technical field
The present invention relates to a kind of manufacture method of industrial terylene thread, especially a kind of manufacture method of antithermal shrink polyster high strength yarn.
Background technology
Antithermal shrink polyster high strength yarn has characteristics such as intensity height, ABRASION RESISTANCE be good, corrosion-resistant, is a special kinds of polyester industrial yarn.Since 20th century, introduced polyester industrial yarn production equipment and technology the nineties, the output of common high strength yarn is all increasing every year, development along with industry, market also increases day by day to the demand of antithermal shrink polyster high strength yarn, Application Areas is constantly expansion also, as industries such as building, daily living article, medical science, military supplies application is arranged all, specific to lamp house cloth, filtration fabrics, the high temperature resistant fabric of building, WATERPROOF FABRIC etc.
At present, mainly continue to use the production route of polyester industrial yarn both at home and abroad, adopt conventional spinning drawing-off two step method, can spin the middle high-strength terylene filament of fracture strength greater than 6.0cN/dtex, main processes comprises: inherent viscosity is carried out melt spinning greater than 0.85 polyester, during spinning, below shower nozzle, add annealing device, spinning speed is between 600-800m/min, and the silk that makes carries out the secondary drawing-off, regulates proper temperature and one-level, secondary drawing multiplying power proportioning, produce required in high-intensity terylene thread, its technical indicator: intensity is 6.2-6.4cN/dtex, dry-hot shrinkage 2.0-2.5%, elongation at break 12-15%.And at present real antithermal shrink polyster high strength yarn rule of origin mainly relies on import, perhaps produces by import equipment and technology, and its manufacture method and technology and domestic prior art and equipment difference are very big, and its manufacturing cost is also high.
Summary of the invention
According to problems of the prior art, promptly utilize homemade spinning equipment, improve the production technology of existing antithermal shrink polyster silk, the objective of the invention is to design the production method of a kind of stable and reliable operation, antithermal shrink polyster high strength yarn that cost of investment is low, technical scheme of the present invention is so to realize:
A kind of manufacture method of antithermal shrink polyster high strength yarn, comprise polyester slice raw material-solid phase polycondensation-melt extruded-lateral blowing cooling-multistage hot-rolling stretching-high temperature laxation shaping-coiling and molding, raw material adopts batch (-type) through solid phase polycondensation, i.e. rotary drum tackify under vacuum, acquired character viscosity is the sticking section of the height of 0.96-0.99, require to have a narrower molecular weight distribution simultaneously, make big molecule even as much as possible, reaction speed can not be too fast, and temperature can not be too high, and the material temperature is 226 ℃-232 ℃, strand is slowly increased, and vacuum and whipping performance are preferably arranged, allow micromolecule in time get rid of, make big molecule have more uncertainty to prevent backward reaction;
In " lateral blowing cooling " step, the speed of cooling air, temperature,, blast and aperture size, all cooling has very big influence to silk, and most important to the influence of spinning and after-drawing.Wind speed, blast are big, easily take away heat, but make the bar swing easily, and move on the freezing point, are unfavorable for spinning; Wind speed, blast are little, and cooling effect is bad, and freezing point moves down, difficulty in spinning; The wind-warm syndrome height can reduce the jet stretch tension force of fiber, reduces the preorientation of fiber, and the multistage hot-rolling that is beneficial to the back stretches, but has influenced crystallization, has reduced the heat endurance of fiber simultaneously.For taking into account intensity and heat-shrinkable, selecting wind-warm syndrome is 18 ℃-20 ℃, blast 500Pa, wind speed 0.6m/s; Described multistage hot-rolling stretches and divides two-stage, and the first order stretches 4 times, and second level stretching 1.4-1.5 times, 185 ℃-188 ℃ of heat roller temperatures; Described high temperature laxation shaping is chosen under 246 ℃ of-252 ℃ of high temperature actions, and by the overfeeding of big ratio, the partial relaxation bigger internal stress falls, and macromolecular conformation is tended towards stability.
" multistage hot-rolling stretching " is contract key in the high strength yarn production technology of heat resistanceheat resistant, common high strength yarn stretches, pass through multistage stretching at a certain temperature, polyester macromolecule chain and crystal grain, crystalline region are arranged vertically in order, obtain higher orientation, the intensity of fiber is improved step by step, temperature is controlled at about 230 ℃ of softening points, can be easy to reach 7.5cN/dtex intensity, but its heat endurance is bad, because higher draft temperature, it is very high to surpass 200 ℃ of macromolecular internal stress, occur disorientation after being heated easily, thereby be difficult to obtain the low thermal shrinkage fiber.The present invention continues to use two-stage and stretches, the first order stretches 4 times, second level stretching 1.4-1.5 doubly, selecting heat roller temperature is 185 ℃-190 ℃, at this moment nucleus is grown up rapidly, carries out in the time of when being stretching in nucleus and shooting up, and being orientated like this is not only single macromolecular chain, and also have crystal grain, crystalline region and the orientation of the macromolecular mass that is cross-linked with each other, also lay a good foundation for road " high temperature laxation shaping " down.
" high temperature laxation shaping " is chosen under 246 ℃ of-252 ℃ of high temperature actions, and by the overfeeding of big ratio, the partial relaxation bigger internal stress falls, macromolecular conformation is tended towards stability, thereby reach fiber be heated the retraction little, i.e. the purpose that heat resistanceheat resistant is contracted, dry-hot shrinkage can reach 0.2%.
As preferably, melt extruded obtains as-spun fibre through slow cooling, in this process, polyester macromolecule is finished by solid-state-liquid state-solid-state conversion, and the fiber-forming polymer of rheid has stronger viscoplasticity, have higher jet stretch tension force, it is improper to cool off, and can cause sticking connection or melt fracture.In the large-scale production process; owing to be subjected to the influence of several factors; the nature drawing point is difficult to fixing; make the uncertainty that becomes very big that stretches,, help controlling preorientation and crystallization simultaneously for a metastable natural drawing point is arranged; there is a higher slow cooling temperature very necessary; through a large amount of experiments, the slow cooling temperature is controlled at 358 ℃-362 ℃, and 360 ℃ are scheme most preferably.
As preferably, use finish lubricated in the high temperature laxation shaping technology, used finish is high temperature resistant finish, each component is:
(a) PSI, its molecular formula is
Mass percent is 5～8%;
(b) polyoxyethylene (90) castor oil, its molecular formula is
Mass percent is 32～40%;
(c) nonyl phenol polyethenoxy ether, its molecular formula is
Mass percent is 30～34%;
(d) pentaerythrite alkyl three esters, its molecular formula is
Mass percent is 28～32%.
As preferably, the inherent viscosity of high sticking section is 0.98 in " solid phase polycondensation " step.
As preferably, the slow cooling temperature is 360 ℃ in " melt extruded " step.
The present invention utilizes the section of high and dry technology company far away in the Chinese Zhengzhou to carry and pre-crystallization apparatus, the solid-phase tack producing device of sky, Yangzhou great pressure company, in Beijing beautiful chemical fibre system machine company spin equipment such as owing combination machine, improve spinning technique, a kind of manufacture method of antithermal shrink polyster high strength yarn has been proposed, the main technique step is: polyester slice raw material-solid phase polycondensation-melt extruded-lateral blowing cooling-multistage hot-rolling stretching-high temperature laxation shaping-coiling and molding, having made intensity is 6.5-7.2cN/dtex, dry-hot shrinkage 0.2-1.0%, percentage elongation is the antithermal shrink polyster high strength yarn of 22-25%, this process cost of investment is low, implement simple, started on home equipment that to produce dimensional stability to heating in house little, the precedent of the terylene thread that intensity is high, market application foreground is wide.
The specific embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: a kind of manufacture method of antithermal shrink polyster high strength yarn comprises " polyester slice raw material-solid phase polycondensation-melt extruded-lateral blowing cooling-multistage hot-rolling stretching-high temperature laxation shaping-coiling and molding " processing step.
The polyester slice raw material reaches the tackify purpose through solid phase polycondensation, and the present invention adopts rotary drum tackify under the vacuum, and acquired character viscosity is 0.98 the sticking section of height, and temperature can not be too high, and the material temperature is 228 ℃;
" melt extruded " step.The sticking section of height behind the solid phase polycondensation by the screw rod melt extruded, through the measuring pump accurate measurement with melt pressure is provided, sprays the melt thread by filament spinning component, and slow cooling becomes as-spun fibre, and the slow cooling temperature is controlled at 360 ℃ ± 1 ℃;
" lateral blowing cooling " step, for taking into account intensity and heat-shrinkable, selecting wind-warm syndrome is 19 ℃, blast 500Pa, wind speed 0.6m/s;
" multistage hot-rolling stretching " divides two-stage, and the first order stretches 4 times, and the second level stretches 1.45 times, 186 ℃ of heat roller temperatures;
" high temperature laxation shaping " is chosen under 248 ℃ of high temperature actions, and by the overfeeding of big ratio, the partial relaxation bigger internal stress falls, macromolecular conformation is tended towards stability, thereby reach fiber be heated the retraction little, i.e. the purpose that heat resistanceheat resistant is contracted, dry-hot shrinkage can reach 0.2%; Added high temperature resistant finish in this processing step, its component is:
(a) PSI, its mass percent are 6%,
(b) polyoxyethylene (90) castor oil, its mass percent is 34%,
(c) nonyl phenol polyethenoxy ether, its mass percent are 32%,
(d) pentaerythrite alkyl three esters, its mass percent is 28%;
" coiling and molding ", the silk behind the high temperature laxation shaping is reeled by cold dish, and the silk of gained does not have broken end, lousiness, and technical indicator meets the requirement of antithermal shrink polyster high strength yarn.
Embodiment 2: a kind of manufacture method of antithermal shrink polyster high strength yarn comprises " polyester slice raw material-solid phase polycondensation-melt extruded-lateral blowing cooling-multistage hot-rolling stretching-high temperature laxation shaping-coiling and molding " processing step.
" lateral blowing cooling " step, for taking into account intensity and heat-shrinkable, selecting wind-warm syndrome is 18 ℃, blast 500Pa, wind speed 0.6m/s;
Other step reference example 1 is identical with embodiment 1.
Embodiment 3: a kind of manufacture method of antithermal shrink polyster high strength yarn comprises " polyester slice raw material-solid phase polycondensation-melt extruded-lateral blowing cooling-multistage hot-rolling stretching-high temperature laxation shaping-coiling and molding " processing step.
" multistage hot-rolling stretching " divides two-stage, and the first order stretches 4 times, and the second level stretches 1.5 times, 188 ℃ of heat roller temperatures;
" high temperature laxation shaping " is chosen under 250 ℃ of high temperature actions, and by the overfeeding of big ratio, the partial relaxation bigger internal stress falls, macromolecular conformation is tended towards stability, thereby reach fiber be heated the retraction little, i.e. the purpose that heat resistanceheat resistant is contracted, dry-hot shrinkage can reach 0.2%.Added high temperature resistant finish in this processing step, its component is:
(a) PSI, its mass percent are 8%,
(b) polyoxyethylene (90) castor oil, its mass percent is 32%,
(c) nonyl phenol polyethenoxy ether, its mass percent are 30%,
(d) pentaerythrite alkyl three esters, its mass percent is 30%;
Other step reference example 1 is identical with embodiment 1.
Claims (6)
1, a kind of manufacture method of antithermal shrink polyster high strength yarn, comprise polyester slice raw material-solid phase polycondensation-melt extruded-lateral blowing cooling-multistage hot-rolling stretching-high temperature laxation shaping-coiling and molding, it is characterized in that described raw material is behind solid phase polycondensation, acquired character viscosity is the sticking section of the height of 0.96-0.99, and the material temperature is 226 ℃-232 ℃; It is 18 ℃-20 ℃ that wind-warm syndrome is selected in described lateral blowing cooling, blast 500Pa, wind speed 0.6m/s; Described multistage hot-rolling stretches and divides two-stage, and the first order stretches 4 times, and second level stretching 1.4-1.5 times, 185 ℃-190 ℃ of heat roller temperatures; Described high temperature laxation shaping is chosen under 246 ℃ of-252 ℃ of high temperature actions, and by the overfeeding of big ratio, the partial relaxation bigger internal stress falls, and macromolecular conformation is tended towards stability.
2, the manufacture method of a kind of antithermal shrink polyster high strength yarn according to claim 1 is characterized in that the slow cooling temperature is controlled at 358 ℃-362 ℃ in described " melt extruded " step.
3, the manufacture method of a kind of antithermal shrink polyster high strength yarn according to claim 1, its feature add high temperature resistant finish in described " high temperature laxation shaping " step, its component is:
(a) PSI, its mass percent are 5～8%;
(b) polyoxyethylene (90) castor oil, its mass percent is 32～40%;
(c) nonyl phenol polyethenoxy ether, its mass percent are 30～34%;
(d) pentaerythrite alkyl three esters, its mass percent is 28～32%.
4, the manufacture method of a kind of antithermal shrink polyster high strength yarn according to claim 1 is characterized in that the inherent viscosity of high sticking section in described " solid phase polycondensation " operation is 0.98.
5, the manufacture method of a kind of antithermal shrink polyster high strength yarn according to claim 1 is characterized in that in described " high temperature laxation shaping " step, and the control temperature is 250 ℃.
6, the manufacture method of a kind of antithermal shrink polyster high strength yarn according to claim 2 is characterized in that the slow cooling temperature is 360 ℃ in described " melt extruded " step.
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| CN2007100699181A CN101089266B (en) | 2007-07-04 | 2007-07-04 | Manufacturing method of antithermal shrink polyster high strength yarn |
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| CN101914818A (en) * | 2010-08-09 | 2010-12-15 | 陈晓美 | Method for manufacturing wear-resistant high-strength polyester fibers |
| CN101255612B (en) * | 2008-04-08 | 2011-01-26 | 浙江柯司特化纤有限公司 | Production technique of shockproof polyester industrial filament yarn |
| CN102168318A (en) * | 2011-04-23 | 2011-08-31 | 无锡市太极实业股份有限公司 | Direct spinning method for single-part four-end 2200dtex high-modulus low-shrinkage polyester industrial yarns |
| CN102168319A (en) * | 2011-04-23 | 2011-08-31 | 无锡市太极实业股份有限公司 | Production method for high-strength high-modulus low-shrink polyester industrial yarns |
| CN102181954A (en) * | 2011-04-23 | 2011-09-14 | 无锡市太极实业股份有限公司 | Method for producing polyester industrial yarns with high strength, high elongation and low shrinkage |
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| DE19937728A1 (en) * | 1999-08-10 | 2001-02-15 | Lurgi Zimmer Ag | HMLS threads made of polyester and spin stretching process for their production |
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| PT1543182E (en) * | 2002-07-26 | 2008-04-18 | Kolon Inc | A high strength low shrinkage polyester drawn yarn, and a process of preparing for the same |
| CN1243857C (en) * | 2003-10-23 | 2006-03-01 | 王信友 | Manufacturing method of high-modulus low-shrinking ferylene filament |
| CN100427651C (en) * | 2006-07-28 | 2008-10-22 | 施建强 | Preparation technology of ultralow contraction terylene industry long filament |
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| CN101914818A (en) * | 2010-08-09 | 2010-12-15 | 陈晓美 | Method for manufacturing wear-resistant high-strength polyester fibers |
| CN102168319B (en) * | 2011-04-23 | 2012-07-04 | 无锡市太极实业股份有限公司 | Production method for high-strength high-modulus low-shrink polyester industrial yarns |
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| CN102181954A (en) * | 2011-04-23 | 2011-09-14 | 无锡市太极实业股份有限公司 | Method for producing polyester industrial yarns with high strength, high elongation and low shrinkage |
| CN102168318B (en) * | 2011-04-23 | 2012-07-04 | 无锡市太极实业股份有限公司 | Direct spinning method for single-part four-end 2200dtex high-modulus low-shrinkage polyester industrial yarns |
| CN102168318A (en) * | 2011-04-23 | 2011-08-31 | 无锡市太极实业股份有限公司 | Direct spinning method for single-part four-end 2200dtex high-modulus low-shrinkage polyester industrial yarns |
| CN103293110A (en) * | 2013-05-09 | 2013-09-11 | 芜湖华烨新材料有限公司 | Method for identifying chemical fibers |
| CN103293110B (en) * | 2013-05-09 | 2015-05-27 | 芜湖华烨新材料有限公司 | Method for identifying chemical fibers |
| CN103469326A (en) * | 2013-09-22 | 2013-12-25 | 徐州斯尔克纤维科技股份有限公司 | Manufacturing method of large-diameter and high-viscosity polyester monofilament |
| CN103603069A (en) * | 2013-10-22 | 2014-02-26 | 无锡金通化纤有限公司 | Polyester screen monofilament with low thermal loss and high strength and production method thereof |
| CN103603069B (en) * | 2013-10-22 | 2017-10-13 | 无锡金通化纤有限公司 | A kind of low-loss high tenacity polyester fiber screen cloth monofilament and its production method |
| CN105543988A (en) * | 2015-12-04 | 2016-05-04 | 浙江古纤道新材料股份有限公司 | Fine denier sewing thread purpose terylene industrial yarn and processing equipment thereof |
| CN105543988B (en) * | 2015-12-04 | 2018-05-22 | 浙江古纤道新材料股份有限公司 | A kind of fine-denier sewing thread polyester industrial yarn and its process equipment |
| CN111101209A (en) * | 2018-10-25 | 2020-05-05 | 中国石油化工股份有限公司 | High-strength industrial yarn and manufacturing method thereof |
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