CN102797068A - Preparation method of 2,6-naphthalenedicarboxylic acid modified polyester fiber - Google Patents
Preparation method of 2,6-naphthalenedicarboxylic acid modified polyester fiber Download PDFInfo
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- CN102797068A CN102797068A CN2011101359198A CN201110135919A CN102797068A CN 102797068 A CN102797068 A CN 102797068A CN 2011101359198 A CN2011101359198 A CN 2011101359198A CN 201110135919 A CN201110135919 A CN 201110135919A CN 102797068 A CN102797068 A CN 102797068A
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Abstract
The invention relates to a preparation method of a 2,6-naphthalenedicarboxylic acid modified polyester fiber, which comprises preparation of 2,6-naphthalenedicarboxylic acid modified polyester slices and spinning based on a blended FDY (fully drawn yarn) process. The preparation method is characterized by the preparation process of the 2,6-naphthalenedicarboxylic acid modified polyester slices. The method can be completed on the conventional spinning equipment, has the characteristics of dried and uniform tows and tops, uniform color distribution and level fabrics, and can be widely used in the clothing field, decoration field and industry field.
Description
Technical field
The present invention relates to a kind of preparation method of synthetic fiber, particularly, the present invention relates to preparation method a kind of 2,6-naphthalene diacid modified polyester fibre.
Background technology
Terylene is as one of the big main force of three in synthetic fiber fiber, because of its good physics and chemical characteristic are widely used in garment material and other non-garment industry.Dacron product since coming out, also once with its drapability is good, intensity is high, well-pressed and be used as main textile raw material by downstream user and weave all kinds of textiless.Along with economic globalization, the market internationalization, people are also increasingly high to the requirement of clothes; Not only to have comfortableness; Also will have functionally, lining just develops to light, gentle, functional direction, and composite fibre materials just need improve constantly performance and satisfy requirements of weaving process.
Over past ten years, the development of China polyester industrial rapidly, polyester fiber output is 2,700 ten thousand tons of developing into for the year ends 2010 of 516.5 ten thousand tons at the beginning of 2000, average annual growth rate surpasses 25%, has accounted for 66% of global polyester output.Terylene has become the maximum synthetic fiber kind of output in the chemical fibre, is widely used in clothing, decoration, household textiles, fabrics for industrial use and national economy various aspects such as national defence, Industrial Engineering.5 years from now on, also will keep increasing fast.But as textile material, polyester fiber also has significant disadvantages.Therefore, the processing method of selection science, efficient, high-quality, energy-saving and environmental protection is to adapting to and promoting that the high speed sustainable development of polyester industrial, polyster fibre is most important.
Though in synthetic fiber, polyester fiber has the multiple performance of suitable textile applications and application in industry, thereby it has obtained amazing development since large-scale production.But along with the development of World Science development of technology and world industry, polyester fiber can not satisfy people's requirement fully on performance and function.The result of development and innovation makes people develop large quantities of differential, functionalization and high performance synthetic fiber.
The developing direction of PET industry has been represented in the development and application of present differential polyester fiber new varieties.The technology of differential polyester product exploitation roughly can reduce the following aspects:
(1) spining technology of compound spinning superfine fibre and spin pack design;
(2) the compound spining technology that spins bi-component functional fiber or fibre in differentiation;
(3) fused mass directly spinning prepares the complete set technology of thin dawn, micro denier polyester fiber;
(4) spining technology of various cross section Design of spinneret and profiled filament;
The spining technology of (5) three different fibers and mix fine Design of spinneret with plate;
(6) different contraction mixed fiber yarn Combined Machining Technology;
(7) polymer modification prepares the preparation of functional polyester and fiber thereof;
(8) polymer modification prepares the Application and Development of intelligent fiber and intelligent lining;
(9) the nano-powder in-situ polymerization prepares functional polyester and fiber thereof;
(10) preparation of multiple organic or inorganic nano particle and dispersion technology;
(11) preparation and the spining technology of organic or inorganic nano particle/polymer-matrix composite polyester material;
(12) natural fabric and synthetic fiber, chemical-fibres filaments and short fiber multidimensional combination technology.
Conventional polyester fiber, degree of crystallinity is higher, and percent thermal shrinkage is lower, generally is lower than 10%.Along with continually developing of the continuous expansion of polyester fiber Application Areas, fabric new product, increasing than the demand of the high-shrinkage fiber of high shrinkage to having, all kinds of high-shrinkage fibers are succeeded in developing in succession.
Generally can improve the shrinkage factor of polyester fiber through chemical modification method, promptly in the production process of normal polyester, pass through to add the 3rd monomer, destroy macromolecular regularity; Reduce crystallizing power; And the physical modification of combination spinning drafting process, make the high-shrinkage fibre that makes, boiling water shrinkage height and stable contraction rate; The strength and elongation index is good, satisfies the requirement of back processing better.
The present inventor has accomplished the present invention through further improving the technology of polyester and condensation reaction.
Summary of the invention
The objective of the invention is to continually develop functional polyester fiber in order to satisfy many-sided needs of people to weaving face fabric, we carry out modification through adding the 3rd monomer 2,6-naphthalene diacid to traditional polyester fiber.The melt quality that adopts prepared of the present invention to obtain is stable, the slice spinning function admirable; The high-shrinkage polyester staple fibers stable contraction rate property that makes is good, even dyeing, the characteristics that production cost is low.
To achieve these goals, the invention provides following technical scheme:
A kind of 2 preparation method of, 6-naphthalene diacid modified polyester fibre comprises 2, the preparation and the spinning of blend FDY technology of the section of 6-naphthalene two acid modified terylenes; It is characterized in that preparation technology described 2, the section of 6-naphthalene two acid modified terylenes comprises the steps:
At first; On continuous polycondensation equipment; With terephthalic acid (TPA) (PTA), 2,6-naphthalene diacid, ethylene glycol (EG) monomer; Mol ratio according to terephthalic acid (TPA) (PTA), 2,6-naphthalene diacid, ethylene glycol (EG) monomer is 1: the ratio of 0.05-0.15: 1.35-1.50 is measured continuously and stably separately and is joined in the slurry still and pulls an oar; Add silico-tungstic acid, p-methyl benzenesulfonic acid in the making beating still, wherein the mol ratio of the addition of silico-tungstic acid and terephthalic acid (TPA) is 0.010-0.03%, and the addition of p-methyl benzenesulfonic acid and the mol ratio of phthalic acid are 0.03-0.08%;
Then above-mentioned slurry continous-stable is delivered in esterification-I, the esterification-II agitated reactor, adds stabilizing agent in esterification-II agitated reactor simultaneously continuously, control esterification yield 94.5%-99.0%, the viscosity of melt is controlled to be 0.64-0.66; Carboxylate is pumped into polycondensation workshop section, under temperature 282-288 ℃ condition, makes the modified poly ester melt through precondensation and final minification polymerizing technology again, wherein said stabilizing agent is a trimethyl phosphate, and the mol ratio of its addition and terephthalic acid (TPA) is 0.25-0.48%; With the modified poly ester melt through Cast Strip, pelletizing and drying obtain 2, the section of 6-naphthalene two acid modified terylenes.
Wherein, Blend FDY spinning comprises the steps: above-mentioned 2, the section of 6-naphthalene two acid modified terylenes are cooled off → oiled → path → first godet roller → second godet roller → winding process through screw extruder → static mixing → metering → filament spinning component → blowing in the ratio blend of mass ratio 20-35: 65-80 with terylene chips; The temperature of wherein controlling the melt Conveying pipeline is 265-272 ℃, and spinning body temperature is 282-287 ℃, lateral blowing wind speed 0.35-0.70 meter per second; The first godet roller speed 900-1500m/min; Temperature 72-90 ℃, the second hot-rolling speed 3200-4500m/min, temperature 92-110 ℃.
Wherein, 2, the section of 6-naphthalene two acid modified terylenes is pressed mass ratio 25-30: 70-75 with terylene chips.
Wherein, the temperature of esterification-I agitated reactor is controlled at 261-263 ℃, and control still internal pressure is 0.32-0.45MPa.
Wherein, the temperature of esterification-II agitated reactor is controlled at 265-268 ℃, and control still internal pressure is 0.12-0.21MPa.
Wherein, the temperature of prepolymerization reaction still is controlled at 282-285 ℃, and control still internal pressure is 2.5-9.8KPa.
Wherein, the temperature that final minification gathers agitated reactor is controlled at 286-288 ℃, and control still internal pressure is 62-95Pa.
Wherein, described terylene chips is that routine has much light terylene chips, half delustring terylene chips or full-dull terylene chips.
Wherein, the fibre section for preparing of spinnerets through the adjustment filament spinning component is circle, trilobal, triangle, cross, king's font, hollow shape or five leaf.
The invention has the beneficial effects as follows that the present invention is adopting stable technology to make, through reducing the fluctuation of various parameters in the spinning process, suppressed 2, the destabilizing factor in the 6-naphthalene diacid modified polyester fibre production process.The inventive method can be accomplished on conventional spinning equipment, and tow strip is done evenly, and color and luster is evenly distributed, and fabric is smooth, and spinning properties is excellent.
The specific embodiment
To combine concrete embodiment that technical scheme of the present invention is done further to explain and explanation below.
Embodiment 1
At first; On continuous polycondensation equipment; With terephthalic acid (TPA) (PTA), 2,6-naphthalene diacid, ethylene glycol (EG) monomer; According to the mol ratio of terephthalic acid (TPA) (PTA), 2,6-naphthalene diacid, ethylene glycol (EG) monomer is that 1: 0.08: 1.42 ratio is measured continuously and stably separately and joined in the slurry still and pulls an oar; Add silico-tungstic acid, p-methyl benzenesulfonic acid in the making beating still, wherein the mol ratio of the addition of silico-tungstic acid and terephthalic acid (TPA) is 0.02%, and the addition of p-methyl benzenesulfonic acid and the mol ratio of phthalic acid are 0.06%;
Then above-mentioned slurry continous-stable is delivered in esterification-I, the esterification-II agitated reactor, adds stabilizing agent in esterification-II agitated reactor simultaneously continuously, control esterification yield 98.5%, the viscosity of melt is controlled to be 0.65; Carboxylate is pumped into polycondensation workshop section, under temperature 282-288 ℃ condition, makes the modified poly ester melt through precondensation and final minification polymerizing technology again, wherein said stabilizing agent is a trimethyl phosphate, and the mol ratio of its addition and terephthalic acid (TPA) is 0.37%; With the modified poly ester melt through Cast Strip, pelletizing and drying obtain 2, the section of 6-naphthalene two acid modified terylenes.Wherein, concrete esterification and polycondensation reaction condition are as shown in table 1.
Esterification of table 1 modified poly ester and polycondensation reaction condition
| Condition | Esterification I | Esterification II | Precondensation | Final minification gathers |
| Reaction temperature/℃ | 262 | 266 | 282 | 288 |
| Reaction pressure | 0.43MPa | 0.18MPa | 7.9KPa | 78Pa |
Blend FDY spinning comprises the steps: above-mentioned 2, the section of 6-naphthalene two acid modified terylenes are cooled off → oiled → path → first godet roller → second godet roller → winding process through screw extruder → static mixing → metering → filament spinning component → blowing in 25: 75 ratio blend of mass ratio with terylene chips; The temperature of wherein controlling the melt Conveying pipeline is 268 ℃; Spinning body temperature is 285 ℃; Lateral blowing wind speed 0.45 meter per second, the first godet roller speed 1000m/min, 78 ℃ of temperature; The second hot-rolling speed 3200m/min, 98 ℃ of temperature.
Claims (5)
1. one kind 2, the preparation method of 6-naphthalene diacid modified polyester fibre comprise 2, the preparation and the spinning of blend FDY technology of the section of 6-naphthalene two acid modified terylenes; It is characterized in that preparation technology described 2, the section of 6-naphthalene two acid modified terylenes comprises the steps:
At first; On continuous polycondensation equipment; With terephthalic acid (TPA) (PTA), 2,6-naphthalene diacid, ethylene glycol (EG) monomer; Mol ratio according to terephthalic acid (TPA) (PTA), 2,6-naphthalene diacid, ethylene glycol (EG) monomer is 1: the ratio of 0.05-0.15: 1.35-1.50 is measured continuously and stably separately and is joined in the slurry still and pulls an oar; Add silico-tungstic acid, p-methyl benzenesulfonic acid in the making beating still, wherein the mol ratio of the addition of silico-tungstic acid and terephthalic acid (TPA) is 0.010-0.03%, and the addition of p-methyl benzenesulfonic acid and the mol ratio of phthalic acid are 0.03-0.08%;
Then above-mentioned slurry continous-stable is delivered in esterification-I, the esterification-II agitated reactor, adds stabilizing agent in esterification-II agitated reactor simultaneously continuously, control esterification yield 94.5%-99.0%, the viscosity of melt is controlled to be 0.64-0.66; Carboxylate is pumped into polycondensation workshop section, under temperature 282-288 ℃ condition, makes the modified poly ester melt through precondensation and final minification polymerizing technology again, wherein said stabilizing agent is a trimethyl phosphate, and the mol ratio of its addition and terephthalic acid (TPA) is 0.25-0.48%; With the modified poly ester melt through Cast Strip, pelletizing and drying obtain 2, the section of 6-naphthalene two acid modified terylenes.
2. the described preparation method of claim 1; It is characterized in that blend FDY spinning comprises the steps: above-mentioned 2, the section of 6-naphthalene two acid modified terylenes are cooled off → oiled → path → first godet roller → second godet roller → winding process through screw extruder → static mixing → metering → filament spinning component → blowing in the ratio blend of mass ratio 20-35: 65-80 with terylene chips; The temperature of wherein controlling the melt Conveying pipeline is 265-272 ℃, and spinning body temperature is 282-287 ℃, lateral blowing wind speed 0.35-0.70 meter per second; The first godet roller speed 900-1500m/min; Temperature 72-90 ℃, the second hot-rolling speed 3200-4500m/min, temperature 92-110 ℃.
3. the described preparation method of claim 1 is characterized in that modified dacron section and terylene chips are by mass ratio 25-30: 70-75.
4. the described preparation method of claim 1 is characterized in that described terylene chips is that routine has much light terylene chips, half delustring terylene chips or full-dull terylene chips.
5. the described preparation method of claim 1 is characterized in that the fibre section is circle, trilobal, triangle, cross, king's font, hollow shape or five leaf.
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| CN2011101359198A CN102797068A (en) | 2011-05-24 | 2011-05-24 | Preparation method of 2,6-naphthalenedicarboxylic acid modified polyester fiber |
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| CN2011101359198A CN102797068A (en) | 2011-05-24 | 2011-05-24 | Preparation method of 2,6-naphthalenedicarboxylic acid modified polyester fiber |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801265A (en) * | 2016-12-29 | 2017-06-06 | 江苏恒科新材料有限公司 | Hollow FDY, shape polyester fiber of a kind of 8 words and preparation method thereof |
| CN106811821A (en) * | 2016-12-29 | 2017-06-09 | 江苏恒科新材料有限公司 | It is a kind of leafy special-shaped polyester fiber FDY and preparation method thereof |
| CN106835336A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | FDY, a kind of square hollow polyester fiber and preparation method thereof |
| CN106835337A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | HOY, a kind of triangle profile polyester fiber and preparation method thereof |
| CN106835331A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | A kind of Direct-spinning of PET Fiber method for weakening extrusion swelling effect |
| CN106835334A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | A kind of leafy FDY, hollow shape polyester fiber and preparation method thereof |
| CN106835335A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | A kind of Direct-spinning of PET Fiber method for reducing die swell ratio |
| CN107245768A (en) * | 2016-12-29 | 2017-10-13 | 江苏恒科新材料有限公司 | A kind of FDY, super fine denier polyester fiber and preparation method thereof |
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| CN101787583A (en) * | 2010-03-13 | 2010-07-28 | 浙江理工大学 | Method for preparing continuous polymerization directly-spun high-shrinkage polyester filaments |
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| CN101787583A (en) * | 2010-03-13 | 2010-07-28 | 浙江理工大学 | Method for preparing continuous polymerization directly-spun high-shrinkage polyester filaments |
Non-Patent Citations (1)
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801265A (en) * | 2016-12-29 | 2017-06-06 | 江苏恒科新材料有限公司 | Hollow FDY, shape polyester fiber of a kind of 8 words and preparation method thereof |
| CN106811821A (en) * | 2016-12-29 | 2017-06-09 | 江苏恒科新材料有限公司 | It is a kind of leafy special-shaped polyester fiber FDY and preparation method thereof |
| CN106835336A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | FDY, a kind of square hollow polyester fiber and preparation method thereof |
| CN106835337A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | HOY, a kind of triangle profile polyester fiber and preparation method thereof |
| CN106835331A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | A kind of Direct-spinning of PET Fiber method for weakening extrusion swelling effect |
| CN106835334A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | A kind of leafy FDY, hollow shape polyester fiber and preparation method thereof |
| CN106835335A (en) * | 2016-12-29 | 2017-06-13 | 江苏恒科新材料有限公司 | A kind of Direct-spinning of PET Fiber method for reducing die swell ratio |
| CN107245768A (en) * | 2016-12-29 | 2017-10-13 | 江苏恒科新材料有限公司 | A kind of FDY, super fine denier polyester fiber and preparation method thereof |
| CN106801265B (en) * | 2016-12-29 | 2019-08-27 | 江苏恒科新材料有限公司 | Hollow FDY, shape polyester fiber of 8 words of one kind and preparation method thereof |
| CN107245768B (en) * | 2016-12-29 | 2020-06-05 | 江苏恒科新材料有限公司 | Superfine denier polyester fiber FDY (fully drawn yarn) and preparation method thereof |
| CN106835335B (en) * | 2016-12-29 | 2020-06-05 | 江苏恒科新材料有限公司 | Polyester spinning method for reducing extrusion swelling ratio |
| CN106835331B (en) * | 2016-12-29 | 2020-06-05 | 江苏恒科新材料有限公司 | Polyester spinning method for weakening extrusion swelling effect |
| CN106811821B (en) * | 2016-12-29 | 2020-06-05 | 江苏恒科新材料有限公司 | Multi-blade special-shaped polyester fiber FDY (fully drawn yarn) and preparation method thereof |
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Application publication date: 20121128 |