CN105648566B - A kind of low aberration polyester FDY silks and preparation method thereof - Google Patents
A kind of low aberration polyester FDY silks and preparation method thereof Download PDFInfo
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- CN105648566B CN105648566B CN201511019122.6A CN201511019122A CN105648566B CN 105648566 B CN105648566 B CN 105648566B CN 201511019122 A CN201511019122 A CN 201511019122A CN 105648566 B CN105648566 B CN 105648566B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/83—Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
- C08G63/86—Germanium, antimony, or compounds thereof
- C08G63/866—Antimony or compounds thereof
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
Abstract
The present invention relates to a kind of low aberration polyester FDY silks and preparation method thereof, the low aberration polyester FDY silks are obtained by Direct-spinning of PET Fiber, fracture strength >=3.8cN/dtex of the low aberration polyester FDY silks, elongation at break is 33.0 ± 3.0%, aberration Δ E is less than 0.200, and the ethylene glycol magnesium in the present invention is gentleer, its thermal degradation coefficient very little, the side reaction triggered during the course of the reaction is less, reduces the generation of oligomer in process；Oligomer mass percentage content is less than 0.5%, and the mass percentage content of diethylene glycol (DEG) is less than 0.5%.The reduction of oligomer in polymerization process, oligomer is further reduced during dissolveing and washing away so that in dyeing polyester fibers and post-processing heat setting, oligomer reduces out of fiber to the amount of external migration, reduce color spot and bar flower occurs, ensure that fiber level-dyeing property and crock fastness.
Description
Technical field
The invention belongs to polyester preparing technical field, it is related to a kind of low aberration polyester FDY silks and preparation method thereof, particularly one
Kind polycondensation catalyst through water and dissolves and washes away agent 120~130 using the mixture and polyester slice of ethylene glycol magnesium and antimony glycol
DEG C, brew under the conditions of 0.2~0.3MPa, the low aberration polyester FDY silks and preparation method thereof of washing.
Background technology
Polyethylene terephthalate (PET) is a kind of polymer of function admirable, PET with its modulus is high, intensity is high,
It is well-pressed, conformality is good, pure health, barrier property are good etc., be widely used in fiber, the field such as bottle is packed, film and sheet material,
Yield cumulative year after year, position in industry are obviously improved.
PET belongs to the straight chain macromolecular of symmetry, and strand does not contain side-chain radical, and regularity is very good, this structure
Glass transition temperature it is higher, it is necessary to dye at very high temperatures, promote diffusion of the dye molecule to fibrous inside.Separately
Outside, PET strand is regular, good crystallinity, and strand arrangement is close, and is not had an effect on strand with dye molecule
Polar group, make the colouring of polyester fiber more difficult.Due to not having hydrophilic radical in its molecule, hygroscopicity is very poor, and this leads
Cause the dyeing of terylene relatively difficult.The main high-temperature and high pressure dyeing process method of terylene disperse dyeing
Oligomer in polyester fiber is a kind of ester or ether of low molecule amount, is primarily referred to as the oligomerisation that the degree of polymerization is less than 10
Thing, diethylene glycol (DEG), it is to produce as a by-product.Wherein oligomer is divided into linear oligomerization thing and cyclic oligomer, wherein with ring
Shape aggressiveness particularly cyclic trimer is in the majority, and oligomer is mainly concerned with heterogeneous nucleation, spinning processing, dyeing etc., to polyester
Performance and the processing of rear road cause certain harmful effect.Ethylene glycol terephthalate polymer (PET) is greatly containing about oligomer 3-
4%, it will be made troubles when oligomer occurs in fiber surface to dyeing and post-processing.Diffusing out for oligomer is easiest to occur
Temperature control heating and holding stage in dyeing.When cooling, with as dyestuff because solubility of the oligomer in water is with temperature
Degree reduction strongly reduces, therefore can crystallize precipitation, and the dyestuff and oligomer of precipitation are attached to fiber surface and are very unlikely to wash away, from
And bringing many troubles to dyeing and post-processing, in dyeing course, the dyestuff and oligomer of aggregation are adhered to fiber surface, occur
Phenomena such as dyestuff color dot, spot, dyeing defect.It is deposited in the pipeline and valve of overflow dyeing machine, hinders liquid stream circulation, causes dyeing tired
It is difficult.Oligomer key is eliminated to be to eliminate oligomer cyclic trimer and diethylene glycol (DEG), be on the one hand reduce in the course of the polymerization process it is low
The generation of polymers, removed before dyeing or in dyeing.
The content of the invention
It is an object of the invention to provide a kind of low aberration polyester FDY silks and preparation method thereof, are that a kind of polycondensation catalyst is adopted
Polyester and low aberration polyester FDY silks of the mixture of spent glycol magnesium and antimony glycol and preparation method thereof.The present invention uses
The mixture of ethylene glycol magnesium and antimony glycol is polycondensation catalyst, thermal degradation is reduced to it is minimum, and polyester slice through water with
Agent is dissolved and washed away at 130 DEG C, brew, washing under the conditions of 0.3MPa；Reduce oligomer, diethylene glycol content dyes to polyester FDY silks
Influence.
A kind of low aberration polyester FDY silks of the present invention, for the polyester be terephthalic acid (TPA) and ethylene glycol through esterification and
The lower polycondensation of the mixture through catalytic of ethylene glycol magnesium and antimony glycol effect, it is granulated and dissolves and washes away rear spinning and be made；
In the section of the polyester, oligomer mass percentage content is less than 0.5%, the mass percentage content of diethylene glycol (DEG)
Less than 0.5%；
The molecular formula of the ethylene glycol magnesium is Mg (OCH2CH2OH)2；
Described dissolve and wash away refers to that the section after being granulated is boiled under the conditions of 120~130 DEG C with 0.2~0.3MPa through water with dissolveing and washing away agent
Bubble and washing.
The low aberration polyester FDY silks are dissolved and washed away rear spinning by polyester and obtained, the fracture strength of the low aberration polyester FDY silks
>=3.8cN/dtex, elongation at break are 33.0 ± 3.0%, and aberration Δ E is less than 0.200.
In dyeing polyester fibers and post-processing, influence surface oligomers precipitation factor it is a lot, mainly have temperature and when
Between etc. factor.The migration that dyeing temperature will aggravate oligomer is improved, in the presence of ought particularly having some auxiliary agents or dyestuff, migration speed
Degree improves faster.The time of dye liquor circulation continuous is longer, and oligomer is out of fiber to the amount increase of external migration, frequent cold cycling
And the presence of some auxiliary agents, dyestuff can aggravate removal and the deposition of oligomer significantly.The temperature and time of heat setting simultaneously
Have a significant impact to oligomer migration speed and migration amount.Heat setting is one of crucial importance for synthetic fibers dyeing and finishing processing
Process, its main purpose be eliminate fabric on existing fine wrinkle and improve fabric dimensional stability and improve fabric it is strong
The performances such as power, feel, pilling and surfacing.But phenomenon as often occurring in yarn dyed fabric shaping process, i.e.,
Easily there is color spot and bar flower in fabric face after heat setting, and level-dyeing property and crock fastness are also remarkably decreased, especially for super
Thin dacron, influence to be particularly acute, migration of the oligomer under heat effect from inside to outside is one of the main reasons.Existing skill
Art all concentrates on dyeing link to solve influence of the oligomer to dyeing, and this is that one kind controls calibration method, only from source
Solution be only effect a permanent cure it is basic.
Belong to comparatively gentle one as polycondensation catalyst, ethylene glycol magnesium using ethylene glycol magnesium and antimony glycol mixture
Class, its thermal degradation coefficient very little, the side reaction triggered during the course of the reaction is less, reduces the production of oligomer in process
It is raw.The principal element for causing thermal degradation is high temperature and catalyst, and high temperature is that response intensity is too high, causes degraded to accelerate, generates
End carboxyl, while also increase cyclic oligomer；Catalyst is then related to the degradation reaction constant of catalyst, in polycondensation process
In, the effect of catalyst, which is not only in that, can be catalyzed generation main reaction, so as to influence the speed and yield of reaction, while can also be catalyzed
Thermal degradation and ehter bond generation, increase the content of cyclic oligomer and diethylene glycol (DEG).
A kind of line density deviation ratio≤0.5% of low aberration polyester FDY silks as described above, fracture strength CV values≤
5.0%, extension at break CV value≤10.0%, yarn unevenness CV≤2.00%, boiling water shrinkage 7.5 ± 0.5%, oil content
0.90 ± 0.20%.
A kind of low aberration polyester FDY silks as described above, in the mixture of the ethylene glycol magnesium and antimony glycol, ethylene glycol
Magnesium is 2~3 with antimony glycol mass ratio:1.
Present invention also offers a kind of preparation method of low aberration polyester FDY silks, a kind of preparation of low aberration polyester FDY silks
Method is terephthalic acid (TPA) and ethylene glycol through esterification and the polycondensation system under the effect of the mixture through catalytic of ethylene glycol magnesium and antimony glycol
Polyester is obtained, then polyester slice is obtained through pelletizing, polyester is made after then polyester slice is dissolved and washed away；Again through measuring, extruding, cold
But, oil, stretch, thermal finalization and winding, low aberration polyester fiber FDY silks are made；Main technique is：
(1) preparation of catalyst glycol magnesium：
Add ethylene glycol in single-cell for electrolyzation, supporting electrolyte is magnesium chloride, and metal MAG block is anode, and negative electrode is graphite；
Logical direct current, 6~10VV of starting voltage, cathode-current density be 150~200mA, are electrolysed 10~12 hours at 50~60 DEG C, electric
Solution takes out electrode after terminating, and obtains white suspension；It is filtered under diminished pressure, white solid is washed with absolute ethyl alcohol, and second two is obtained after drying
Magnesium alkoxide；
(2) preparation of polyester, including esterification and polycondensation reaction：
The esterification：
Using terephthalic acid (TPA) and ethylene glycol as raw material, anti-ether agent is added, esterification is carried out after being made into uniform sizing material,
Obtain esterification products；Esterification is pressurizeed in nitrogen atmosphere, and Stress control is in normal pressure~0.3MPa, and temperature is 250~260
DEG C, what esterification water quantity of distillate reached theoretical value more than 90% is esterification terminal；
The polycondensation reaction：
Including polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig：
The polycondensation reaction low vacuum stage, catalyst and stabilizer are added in esterification products, under conditions of negative pressure
Start polycondensation reaction, the staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature control at 260~270 DEG C,
Reaction time is 30~50 minutes；The catalyst is the mixture of ethylene glycol magnesium and antimony glycol；
The polycondensation reaction high vacuum stage of Fig, after the polycondensation reaction low vacuum stage, continue to vacuumize, make reaction pressure
Power is down to absolute pressure and is less than 100Pa, and reaction temperature control is at 275~280 DEG C, 50~90 minutes reaction time；
Polyester is made, polyester slice is obtained through pelletizing；
(3) dissolve and wash away
The polyester slice is through water and dissolves and washes away agent brew 3-5 hours under the conditions of 120~130 DEG C with 0.2~0.3MPa, after
It is scrubbed；Obtain polyester.
(4) spinning main technologic parameters：
The temperature of the extrusion is 280~290 DEG C；
The wind-warm syndrome of the cooling is 20~25 DEG C；
The speed of the winding is 4000~4600m/min；
Filament number is 0.3~2.0dtex；
A kind of preparation method of low aberration polyester FDY silks as described above, the ethylene glycol and the terephthalic acid (TPA)
Mol ratio is 1.2~2.0:1.
A kind of preparation method of low aberration polyester FDY silks as described above, the mixing of the ethylene glycol magnesium and antimony glycol
In thing, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1；The catalyst amount is the terephthalic acid (TPA) quality
0.01%~0.05%.
A kind of preparation method of low aberration polyester FDY silks as described above, the stabilizer are selected from triphenyl phosphate, phosphoric acid
One kind in trimethyl and Trimethyl phosphite, stabilizing agent dosage are the 0.01%~0.05% of the terephthalic acid (TPA) weight.
For stabilizer mainly based on phosphate, main function is free radical caused by catching reaction in the course of the polymerization process, reduces side reaction.
A kind of preparation method of low aberration polyester FDY silks as described above, the water are with the mass ratio for dissolveing and washing away agent
100:3~4, polyester slice and water and the ratio for dissolveing and washing away agent, i.e. solid-to-liquid ratio are 1:5-10；It is described that to dissolve and wash away agent be the second of ethylene glycol one
One kind in ether, propyl cellosolve and ethylene glycol monobutyl ether (EGMBE), what addition was a small amount of in water dissolves and washes away agent, dissolves and washes away agent and is dissolved in water, together
When also can dissolve most of low molecular ethers and ester, be advantageous to improve washing effect and oligomer reduction.
A kind of preparation method of low aberration polyester FDY silks as described above, polyester slice is used after the washing refers to brew
70~80 DEG C of 10~15min of hot water wash, are then cleaned, Drying and cooling is standby with cold water.
A kind of preparation method of low aberration polyester FDY silks as described above, the anti-ether agent are in sodium acetate and calcium acetate
One kind, anti-ether agent dosage be the terephthalic acid (TPA) weight 0.01%~0.05%.Anti- ether agent is by adding a small amount of NaAc
The generation of ether in acid condition is reduced, so as to reduce the activity of glycol reaction generation diethylene glycol (DEG).
It is an object of the invention to provide a kind of low aberration polyester FDY silks, using relatively mild a kind of polycondensation catalyst second two
Magnesium alkoxide, the less side reaction triggered during the course of the reaction is less and process in less thermal degradation, reduce and processing
During oligomer generation.Polyester slice is through water and dissolves and washes away agent at 130 DEG C, and brew is advantageous to improve washing under the conditions of 0.3MPa
Effect and oligomer reduction.The reduction of oligomer so that in dyeing polyester fibers and post-processing heat setting, oligomer is from fibre
Reduced in dimension to the amount of external migration, reduce color spot and bar flower occurs, ensure that fiber level-dyeing property and crock fastness.
Beneficial effect：
● belong to comparatively gentle one as polycondensation catalyst, ethylene glycol magnesium using ethylene glycol magnesium and antimony glycol mixture
Class, its thermal degradation coefficient very little, the side reaction triggered during the course of the reaction is less, reduces end carboxyl in process and low
The generation of polymers.
● the oligomer mass percentage content of polyester slice is less than 0.5%, and the mass percentage content of diethylene glycol (DEG) is less than
0.5%, be advantageous to further improve the quality of fiber.
● polyester slice is advantageous to raising with dissolveing and washing away agent brew under the conditions of 120~130 DEG C with 0.2~0.3MPa through water and washed
The effect washed and the reduction of oligomer.
● anti-ether agent reduces the generation of ether in acid condition by adding a small amount of NaAc, so as to reduce glycol reaction
Generate the activity of diethylene glycol (DEG).
● the reduction of oligomer in polymerization process, oligomer is further reduced during dissolveing and washing away so that dyeing polyester fibers
And in post-processing heat setting, oligomer reduces out of fiber to the amount of external migration, reduce color spot and bar flower occurs, ensure that fibre
Tie up level-dyeing property and crock fastness.
Embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, art technology
Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Fixed scope.
The present invention a kind of low aberration polyester FDY silks, low aberration polyester FDY silks by polyester after dissolveing and washing away spinning and obtain, it is low
Fracture strength >=3.8cN/dtex of aberration polyester FDY silks, elongation at break are 33.0 ± 3.0%；, aberration Δ E is less than
0.200, polyester is terephthalic acid (TPA) and ethylene glycol through esterification and under the effect of the mixture through catalytic of ethylene glycol magnesium and antimony glycol
Polycondensation, then obtain polyester slice through pelletizing；In the section of industry polyester, oligomer mass percentage content is less than 0.5%, two
The mass percentage content of glycol is less than 0.5%；The molecular formula of ethylene glycol magnesium is Mg (OCH2CH2OH)2；Dissolve and wash away after referring to granulation
Section through water and dissolve and wash away agent 120~130 DEG C with 0.2~0.3MPa under the conditions of brew and washing.
Wherein, line density deviation ratio≤0.5% of low aberration polyester FDY silks, fracture strength CV value≤5.0%, fracture are stretched
Long CV value≤10.0%, yarn unevenness CV≤2.00%, boiling water shrinkage 7.5 ± 0.5%, oil content 0.90 ± 0.20%.
Wherein, in the mixture of ethylene glycol magnesium and antimony glycol, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1.
A kind of preparation method of low aberration polyester FDY silks of the present invention, terephthalic acid (TPA) and ethylene glycol are through esterification and in second
Polyester is made in the lower polycondensation of the mixture through catalytic of two magnesium alkoxides and antimony glycol effect, then obtains polyester slice through pelletizing, then will be poly-
Polyester is made after dissolveing and washing away in ester section；Again through measuring, extruding, cooling down, oiling, stretching, thermal finalization and winding, obtained low aberration gather
Ester fiber FDY silks.
1st, dyestuff：
Disperse brilliant blue 2BLN, 5% (o.w.f)
2nd, dyeing：
Fiber enters dye 10~15min of insulation, 1.0~2.0 DEG C/min of heating rate, 120~130 DEG C of insulations at 70~80 DEG C
40~60min, cooling, 70~80 DEG C of 20~30min of reduction cleaning.
3rd, the measure of dye uptake
Dyed by above-mentioned technique, and draw liquid before dye respectively, each 2ml of Liquid Residue adds third in 10ml volumetric flasks
Ketone 4ml, makes dyestuff fully dissolve.With distilled water diluting to scale, then with spectrophotometric measure λmax, when dyeing before and after dyestuff
Absorbance A 0, A1 are then：
Dye uptake (%)=(A1/A0 of l mono-) × 100%
In formula：The absorbance of liquid before A0--- dyes
The absorbance of A1--- Liquid Residues
4th, the measure of dyefastness
Tested by GB3920-83, GB251-64, GB3921-83
5th, tinctorial yield and the measure of aberration
Tested using color measurement and color match instrument.
6th, the measure of apparent colour depth (K/S)
Calculated using storehouse Bel card-Munch (kubelka-munk) function：In K/S=(1-R) 2//2R. formulas, K is quilt
Survey the absorption coefficient of object；S is the scattering coefficient of testee；Reflectivity when R is testee infinite thickness.Using SF600X
Datacolor color measurement and color matches instrument is tested, and is tested 5 times in different zones per sample, is taken its mathematical mean.
Embodiment 1
A kind of preparation method of low aberration polyester FDY silks, main technique include：
(1) preparation of catalyst glycol magnesium：
Ethylene glycol is added in single-cell for electrolyzation, supporting electrolyte is magnesium chloride, and metal MAG block is anode, and negative electrode is stone
Ink；Logical direct current, starting voltage 6V, cathode-current density 150mA, it is electrolysed 10 hours at 50 DEG C, electrolysis takes out electricity after terminating
Pole, obtain white suspension；It is filtered under diminished pressure, white solid is washed with absolute ethyl alcohol, and ethylene glycol magnesium is obtained after drying；
(2) preparation of polyester, including esterification and polycondensation reaction：
Esterification：
Using terephthalic acid (TPA) and ethylene glycol as raw material, the mol ratio of ethylene glycol and terephthalic acid (TPA) is 1.2:1, add
Anti- ether agent sodium acetate, sodium acetate dosage are the 0.01% of terephthalic acid (TPA) weight, carry out esterification after being made into uniform sizing material, obtain
To esterification products；Esterification is pressurizeed in nitrogen atmosphere, and Stress control is in normal pressure, and at 250 DEG C, esterification water quantity of distillate reaches temperature
It is esterification terminal to the 91% of theoretical value；
Polycondensation reaction：
Including polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig：
In the polycondensation reaction low vacuum stage, catalyst and stabilizer triphenyl phosphate are added in esterification products, catalyst is used
Measure as the 0.01% of terephthalic acid (TPA) quality, triphenyl phosphate dosage is the 0.01% of terephthalic acid (TPA) weight, in the bar of negative pressure
Start polycondensation reaction under part, the staged pressure is steadily evacuated to absolute pressure 498Pa by normal pressure, and temperature control is at 260 DEG C, reaction
Between be 30 minutes；Catalyst is the mixture of ethylene glycol magnesium and antimony glycol, and ethylene glycol magnesium is 2 with antimony glycol mass ratio:1；
Polycondensation reaction high vacuum stage of Fig, after the polycondensation reaction low vacuum stage, continue to vacuumize, reaction pressure is down to absolutely
To pressure 96Pa, reaction temperature control is at 275 DEG C, 50 minutes reaction time；Polyester is made, polyester slice is obtained through pelletizing；
(3) dissolve and wash away
Polyester slice is through water and dissolves and washes away agent ethylene glycol monoethyl ether brew 3 hours under the conditions of 120 DEG C with 0.2MPa, by washing
Wash, i.e., 70 DEG C of hot water wash 10min of polyester slice, are then cleaned, Drying and cooling is standby with cold water after brew；Gathered
Ester, water and the mass ratio for dissolveing and washing away agent are 100:3, polyester slice and water and the ratio for dissolveing and washing away agent, i.e. solid-to-liquid ratio are
1:5。
(4) spinning main technologic parameters：
The temperature of extrusion is 280 DEG C；
The wind-warm syndrome of cooling is 20 DEG C；
The speed of winding is 4000m/min；
Filament number is 0.3dtex.
The fracture strength 3.8cN/dtex of low aberration polyester FDY silks, elongation at break 30.5%, line density deviation is made
Rate 0.4%, fracture strength CV values 3.6%, extension at break CV values 8.8%, yarn unevenness CV1.89%, boiling water shrinkage
7.8%, oil content 0.85%.
(5) dye
Embodiment 2
A kind of preparation method of low aberration polyester FDY silks, main technique include：
(1) preparation of catalyst glycol magnesium：
Ethylene glycol is added in single-cell for electrolyzation, supporting electrolyte is magnesium chloride, and metal MAG block is anode, and negative electrode is stone
Ink；Logical direct current, starting voltage 10V, cathode-current density 200mA, it is electrolysed 12 hours at 60 DEG C, electrolysis takes out electricity after terminating
Pole, obtain white suspension；It is filtered under diminished pressure, white solid is washed with absolute ethyl alcohol, and ethylene glycol magnesium is obtained after drying；
(2) preparation of polyester, including esterification and polycondensation reaction：
Esterification：
Using terephthalic acid (TPA) and ethylene glycol as raw material, the mol ratio of ethylene glycol and terephthalic acid (TPA) is 2.0:1, add
Anti- ether agent calcium acetate, calcium acetate dosage are the 0.05% of terephthalic acid (TPA) weight, carry out esterification after being made into uniform sizing material, obtain
To esterification products；Esterification is pressurizeed in nitrogen atmosphere, and Stress control is in 0.3MPa, and temperature is at 260 DEG C, esterification water quantity of distillate
It is esterification terminal to reach the 92% of theoretical value；
Polycondensation reaction：
Including polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig：
In the polycondensation reaction low vacuum stage, catalyst and stabilizer trimethyl phosphate are added in esterification products, catalyst is used
Measure as the 0.05% of terephthalic acid (TPA) quality, trimethyl phosphate dosage is the 0.05% of terephthalic acid (TPA) weight, in the bar of negative pressure
Start polycondensation reaction under part, the staged pressure is steadily evacuated to absolute pressure 496Pa by normal pressure, and temperature control is at 270 DEG C, reaction
Between be 50 minutes；Catalyst is the mixture of ethylene glycol magnesium and antimony glycol, and ethylene glycol magnesium is 3 with antimony glycol mass ratio:1；
Polycondensation reaction high vacuum stage of Fig, after the polycondensation reaction low vacuum stage, continue to vacuumize, reaction pressure is down to absolutely
To pressure 95Pa, reaction temperature control is at 280 DEG C, 90 minutes reaction time；Polyester is made, polyester slice is obtained through pelletizing；
(3) dissolve and wash away
Polyester slice is through water and dissolves and washes away agent propyl cellosolve brew 5 hours under the conditions of 130 DEG C with 0.3MPa, by washing
Wash, i.e., 80 DEG C of hot water wash 15min of polyester slice, are then cleaned, Drying and cooling is standby with cold water after brew；Obtain polyester, water
Mass ratio with dissolveing and washing away agent is 100:4, polyester slice and water and the ratio for dissolveing and washing away agent, i.e. solid-to-liquid ratio are 1:10.
(4) spinning main technologic parameters：
The temperature of extrusion is 290 DEG C；
The wind-warm syndrome of cooling is 25 DEG C；
The speed of winding is 4600m/min；
Filament number is 0.3dtex.
The fracture strength 4.6cN/dtex of low aberration polyester FDY silks, elongation at break 34.0%, line density deviation is made
Rate 0.3%, fracture strength CV values 3.6%, extension at break CV values 9.2%, yarn unevenness CV1.8%, boiling water shrinkage
6.8%, oil content 0.85%.
(5) dye
Embodiment 3
A kind of preparation method of low aberration polyester FDY silks, main technique include：
(1) preparation of catalyst glycol magnesium：
Ethylene glycol is added in single-cell for electrolyzation, supporting electrolyte is magnesium chloride, and metal MAG block is anode, and negative electrode is stone
Ink；Logical direct current, starting voltage 7V, cathode-current density 160mA, it is electrolysed 11 hours at 55 DEG C, electrolysis takes out electricity after terminating
Pole, obtain white suspension；It is filtered under diminished pressure, white solid is washed with absolute ethyl alcohol, and ethylene glycol magnesium is obtained after drying；
(2) preparation of polyester, including esterification and polycondensation reaction：
Esterification：
Using terephthalic acid (TPA) and ethylene glycol as raw material, the mol ratio of ethylene glycol and terephthalic acid (TPA) is 1.5:1, add
Anti- ether agent sodium acetate, sodium acetate dosage are the 0.02% of terephthalic acid (TPA) weight, carry out esterification after being made into uniform sizing material, obtain
To esterification products；Esterification is pressurizeed in nitrogen atmosphere, and Stress control is in 0.2MPa, and temperature is at 255 DEG C, esterification water quantity of distillate
It is esterification terminal to reach the 92% of theoretical value；
Polycondensation reaction：
Including polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig：
In the polycondensation reaction low vacuum stage, catalyst and stabilizer Trimethyl phosphite, catalyst are added in esterification products
Dosage is the 0.02% of terephthalic acid (TPA) quality, and Trimethyl phosphite dosage is the 0.02% of terephthalic acid (TPA) weight, in negative pressure
Under conditions of start polycondensation reaction, the staged pressure is steadily evacuated to absolute pressure 496Pa by normal pressure, and temperature control is at 265 DEG C, instead
It is 35 minutes between seasonable；Catalyst is the mixture of ethylene glycol magnesium and antimony glycol, and ethylene glycol magnesium is with antimony glycol mass ratio
3:1；
Polycondensation reaction high vacuum stage of Fig, after the polycondensation reaction low vacuum stage, continue to vacuumize, reaction pressure is down to absolutely
To pressure 98Pa, reaction temperature control is at 277 DEG C, 60 minutes reaction time；Polyester is made, polyester slice is obtained through pelletizing；
(3) dissolve and wash away
Polyester slice is through water and dissolves and washes away agent ethylene glycol monobutyl ether (EGMBE) brew 3 hours under the conditions of 125 DEG C with 0.2MPa, by washing
Wash, i.e., 70 DEG C of hot water wash 15min of polyester slice, are then cleaned, Drying and cooling is standby with cold water after brew；Obtain polyester, water
Mass ratio with dissolveing and washing away agent is 100:4, polyester slice and water and the ratio for dissolveing and washing away agent, i.e. solid-to-liquid ratio are 1:10.
(4) spinning main technologic parameters：
The temperature of extrusion is 285 DEG C；
The wind-warm syndrome of cooling is 24 DEG C；
The speed of winding is 4600m/min；
Filament number is 0.3dtex.
The fracture strength 4.1cN/dtex of low aberration polyester FDY silks, elongation at break 35.2%, line density deviation is made
Rate 0.45%, fracture strength CV values 5.0%, extension at break CV values 8.9%, yarn unevenness CV1.95%, boiling water shrinkage
7.8%, oil content 0.75%.
(5) dye
Embodiment 4
A kind of preparation method of low aberration polyester FDY silks, main technique include：
(1) preparation of catalyst glycol magnesium：
Ethylene glycol is added in single-cell for electrolyzation, supporting electrolyte is magnesium chloride, and metal MAG block is anode, and negative electrode is stone
Ink；Logical direct current, starting voltage 7V, cathode-current density 170mA, it is electrolysed 11 hours at 58 DEG C, electrolysis takes out electricity after terminating
Pole, obtain white suspension；It is filtered under diminished pressure, white solid is washed with absolute ethyl alcohol, and ethylene glycol magnesium is obtained after drying；
(2) preparation of polyester, including esterification and polycondensation reaction：
Esterification：
Using terephthalic acid (TPA) and ethylene glycol as raw material, the mol ratio of ethylene glycol and the terephthalic acid (TPA) is 1.8:1,
Anti- ether agent sodium acetate is added, sodium acetate dosage is the 0.02% of terephthalic acid (TPA) weight, after being made into uniform sizing material be esterified instead
Should, obtain esterification products；Esterification is pressurizeed in nitrogen atmosphere, and Stress control is in 0.3MPa, and temperature is at 250 DEG C, esterification water
What quantity of distillate reached theoretical value 98% is esterification terminal；
Polycondensation reaction：
Including polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig：
In the polycondensation reaction low vacuum stage, catalyst and stabilizer triphenyl phosphate are added in esterification products, catalyst is used
Measure as the 0.01% of the terephthalic acid (TPA) quality, triphenyl phosphate dosage is the 0.02% of terephthalic acid (TPA) weight, in negative pressure
Under conditions of start polycondensation reaction, the staged pressure is steadily evacuated to absolute pressure 496Pa by normal pressure, and temperature control is at 264 DEG C, instead
It is 38 minutes between seasonable；Catalyst is the mixture of ethylene glycol magnesium and antimony glycol, and ethylene glycol magnesium is with antimony glycol mass ratio
3:1；
Polycondensation reaction high vacuum stage of Fig, after the polycondensation reaction low vacuum stage, continue to vacuumize, reaction pressure is down to absolutely
To pressure 99Pa, reaction temperature control is at 280 DEG C, 90 minutes reaction time；Polyester is made, polyester slice is obtained through pelletizing；
(3) dissolve and wash away
Polyester slice is through water and dissolves and washes away agent ethylene glycol monoethyl ether brew 3 hours under the conditions of 120 DEG C with 0.3MPa, by washing
Wash, i.e., 70 DEG C of hot water wash 15min of polyester slice, are then cleaned, Drying and cooling is standby with cold water after brew；Obtain polyester, water
Mass ratio with dissolveing and washing away agent is 100:4, polyester slice and water and the ratio for dissolveing and washing away agent, i.e. solid-to-liquid ratio are 1:8.
(4) spinning main technologic parameters：
The temperature of extrusion is 285 DEG C；
The wind-warm syndrome of cooling is 25 DEG C；
The speed of winding is 4500m/min；
Filament number is 0.3dtex.
The fracture strength 3.9cN/dtex of low aberration polyester FDY silks, elongation at break 36%, line density deviation ratio is made
0.3%, fracture strength CV value 4.5%, extension at break CV values 9.5%, yarn unevenness CV1.99%, boiling water shrinkage 7.8%,
Oil content 1.05%.
(5) dye
Claims (9)
1. a kind of low aberration polyester FDY silks, it is characterized in that：The low aberration polyester FDY silks by polyester after dissolveing and washing away spinning and obtain,
Fracture strength >=3.8cN/dtex of the low aberration polyester FDY silks, elongation at break are 33.0 ± 3.0%；Aberration Δ E is less than
0.200, the polyester is that terephthalic acid (TPA) and ethylene glycol are made through esterification and in the mixture through catalytic of ethylene glycol magnesium and antimony glycol
Polyester slice is obtained with lower polycondensation, then through pelletizing；
In the polyester slice, oligomer mass percentage content is less than 0.5%, and the mass percentage content of diethylene glycol (DEG) is less than
0.5%；
The molecular formula of the ethylene glycol magnesium is Mg (OCH2CH2OH)2；
In the mixture of the ethylene glycol magnesium and antimony glycol, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1；
It is described dissolve and wash away refer to be granulated after section through water and dissolve and wash away agent 120~130 DEG C with 0.2~0.3MPa under the conditions of brew and
Washing.
2. a kind of low aberration polyester FDY silks according to claim 1, it is characterised in that the low aberration polyester FDY silks
Line density deviation ratio≤0.5%, fracture strength CV value≤5.0%, extension at break CV value≤10.0%, yarn unevenness CV≤
2.00%, boiling water shrinkage 7.5 ± 0.5%, oil content 0.90 ± 0.20%.
3. a kind of such as preparation method of low aberration polyester FDY silks according to any one of claims 1 to 2, it is characterized in that：To benzene
Polyester is made in polycondensation through esterification and under the effect of the mixture through catalytic of ethylene glycol magnesium and antimony glycol for dioctyl phthalate and ethylene glycol, then passes through
Pelletizing obtains polyester slice, and polyester is made after then polyester slice is dissolved and washed away；Again through measuring, extruding, cooling down, oiling, stretching,
Thermal finalization and winding, low aberration polyester fiber FDY silks are made.
4. the preparation method of a kind of low aberration polyester FDY silks according to claim 3, it is characterised in that main technique includes：
(1) preparation of catalyst glycol magnesium：
Ethylene glycol is added in single-cell for electrolyzation, supporting electrolyte is magnesium chloride, and metal MAG block is anode, and negative electrode is graphite；It is logical
Direct current, 6~10V of starting voltage, cathode-current density are 150~200mA, are electrolysed 10~12 hours at 50~60 DEG C, electrolysis
Electrode is taken out after end, obtains white suspension；It is filtered under diminished pressure, white solid is washed with absolute ethyl alcohol, and ethylene glycol is obtained after drying
Magnesium；
(2) preparation of polyester, including esterification and polycondensation reaction：
The esterification：
Using terephthalic acid (TPA) and ethylene glycol as raw material, anti-ether agent is added, esterification is carried out after being made into uniform sizing material, obtains
Esterification products；Esterification is pressurizeed in nitrogen atmosphere, and Stress control is in normal pressure~0.3MPa, and temperature is at 250~260 DEG C, ester
It is esterification terminal to change water quantity of distillate to reach more than the 90% of theoretical value；
The polycondensation reaction：
Including polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig：
The polycondensation reaction low vacuum stage, catalyst and stabilizer are added in esterification products, is started under conditions of negative pressure
Polycondensation reaction, the staged pressure are steadily evacuated to below absolute pressure 500Pa by normal pressure, and temperature control is at 260~270 DEG C, reaction
Time is 30~50 minutes；The catalyst is the mixture of ethylene glycol magnesium and antimony glycol；
The polycondensation reaction high vacuum stage of Fig, after the polycondensation reaction low vacuum stage, continue to vacuumize, drop reaction pressure
It is less than 100Pa to absolute pressure, reaction temperature control is at 275~280 DEG C, 50~90 minutes reaction time；
Polyester is made, polyester slice is obtained through pelletizing；
(3) dissolve and wash away
The polyester slice is through water and dissolves and washes away agent brew 3-5 hours under the conditions of 120~130 DEG C with 0.2~0.3MPa, by washing
Wash；Obtain polyester；
(4) spinning main technologic parameters：
The temperature of the extrusion is 280~290 DEG C；
The wind-warm syndrome of the cooling is 20~25 DEG C；
The speed of the winding is 4000~4600m/min；
Filament number is 0.3~2.0dtex.
A kind of 5. preparation method of low aberration polyester FDY silks according to claim 3, it is characterised in that the ethylene glycol
Mol ratio with the terephthalic acid (TPA) is 1.2~2.0:1.
A kind of 6. preparation method of low aberration polyester FDY silks according to claim 4, it is characterised in that the ethylene glycol
In the mixture of magnesium and antimony glycol, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1；The catalyst amount is described
The 0.01%~0.05% of terephthalic acid (TPA) quality；The stabilizer is selected from triphenyl phosphate, trimethyl phosphate and phosphorous acid three
One kind in methyl esters, stabilizing agent dosage are the 0.01%~0.05% of the terephthalic acid (TPA) weight.
A kind of 7. preparation method of low aberration polyester FDY silks according to claim 4, it is characterised in that the water with it is molten
The mass ratio of lotion is 100:3~4, polyester slice and water and the ratio for dissolveing and washing away agent, i.e. solid-to-liquid ratio are 1:5~10；It is described molten
Lotion is one kind in ethylene glycol monoethyl ether, propyl cellosolve and ethylene glycol monobutyl ether (EGMBE).
8. the preparation method of a kind of low aberration polyester FDY silks according to claim 4, it is characterised in that the washing is
70~80 DEG C of 10~15min of hot water wash of polyester slice after finger brew, are then cleaned, Drying and cooling is standby with cold water.
A kind of 9. preparation method of low aberration polyester FDY silks according to claim 4, it is characterised in that the anti-ether agent
For one kind in sodium acetate and calcium acetate, anti-ether agent dosage is the 0.01%~0.05% of the terephthalic acid (TPA) weight.
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