CN105648594B - A kind of low aberration polyester imitates linen look abnormal contraction composite filament and preparation method thereof - Google Patents
A kind of low aberration polyester imitates linen look abnormal contraction composite filament and preparation method thereof Download PDFInfo
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- CN105648594B CN105648594B CN201511017797.7A CN201511017797A CN105648594B CN 105648594 B CN105648594 B CN 105648594B CN 201511017797 A CN201511017797 A CN 201511017797A CN 105648594 B CN105648594 B CN 105648594B
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
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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
- C08G63/02—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
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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
- C08G63/83—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
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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
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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
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- Mechanical Engineering (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
- Artificial Filaments (AREA)
Abstract
The present invention relates to a kind of low aberration polyester to imitate linen look abnormal contraction composite filament and preparation method thereof, it is low aberration polyester POY silks and composite filament of the low aberration polyester FDY silks through mixed fine processing composition that low aberration polyester, which imitates linen look abnormal contraction composite filament, and low aberration polyester POY silks form tiny wire ring and are centered around around the low aberration polyester FDY silks；Low aberration polyester POY silks and low aberration polyester FDY silks be via polyester after dissolveing and washing away spinning and obtain, low aberration polyester imitates fracture strength >=3.0cN/dtex of linen look abnormal contraction composite filament, elongation at break is 40.0 ± 3.0%, crimp contraction is 2.50 ± 3.0%, internet pricing is 95 ± 5/m, and aberration Δ E is less than 0.200；Ethylene glycol magnesium in the present invention is gentleer, its thermal degradation coefficient very little, 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, reduces 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, is related to a kind of low aberration polyester and imitates linen look abnormal contraction composite filament and its preparation
Method, particularly a kind of polycondensation catalyst is using the mixture and polyester slice of ethylene glycol magnesium and antimony glycol through water with dissolveing and washing away
Agent is at 120~130 DEG C, and brew, the low aberration polyester of washing imitate linen look abnormal contraction composite filament and its system under the conditions of 0.2~0.3MPa
Preparation Method.
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.
Imitative linen look abnormal contraction composite filament is the long filament with different potential shrinkages, i.e. lower shrinkage silk POY and high convergency
Composite filaments of the silk FDY through mixed fine processing composition, the main feature of the different contraction mixed fiber composite silks of PET：High loft and soft hand
Sense.PET imitates the outer existing similar with common long filament of linen look abnormal contraction composite filament.It is thermally treated due to the difference of two component shrinkage factors
Afterwards, high convergency part forms clear-cut core filaments, turns into the skeleton of silk, and lower shrinkage part forms tiny wire ring and is wound on core filaments
Around, it is exactly like textured filament in appearance.Gloss is soft.Because PET imitates bulk and surface many of linen look abnormal contraction composite filament
Wire ring, eliminate the aurora defect of chemical fibre silk fabrics.Excellent warmth retention property.The high loft of the different contraction mixed fiber composite silks of PET, increase
Space between big fiber.The air content in the different contraction mixed fiber composite silk fabrics of PET is caused to increase.
The content of the invention
It is an object of the invention to provide a kind of low aberration polyester to imitate linen look abnormal contraction composite filament and preparation method thereof, is a kind of
Polycondensation catalyst is compound using the imitative different contraction of linen look of polyester and low aberration polyester of ethylene glycol magnesium and the mixture of antimony glycol
Silk and preparation method thereof.The present invention uses the mixture of ethylene glycol magnesium and antimony glycol to reduce thermal degradation for polycondensation catalyst
To minimum, and polyester slice through water and dissolves and washes away agent at 130 DEG C, brew, washing under the conditions of 0.3MPa；Reduce oligomer, two sweet
The influence that alcohol content dyes to polyester composite filament.
A kind of low aberration polyester of the present invention imitates linen look abnormal contraction composite filament, is that the polyester is terephthalic acid (TPA) and second two
Alcohol through esterification and the mixture through catalytic of ethylene glycol magnesium and antimony glycol effect under polycondensation, be granulated and dissolve and wash away after spinning processing system
；The low aberration polyester imitates linen look abnormal contraction composite filament and mixes fine add for low aberration polyester POY silks and low aberration polyester FDY silks warp
The composite filament of work composition, the low aberration polyester POY silks form tiny wire ring and are centered around around the low aberration polyester FDY silks；
The low aberration polyester POY silks and low aberration polyester FDY silks be via polyester after dissolveing and washing away spinning and obtain, the low aberration polyester
Fracture strength >=3.0cN/dtex of imitative linen look abnormal contraction composite filament, elongation at break are 40.0 ± 3.0%, and crimp contraction is
2.50 ± 3.0%, internet pricing is 95 ± 5/m, and aberration Δ E is less than 0.200；
In the section of the industry polyester, oligomer mass percentage content is less than 0.5%, the quality percentage of diethylene glycol (DEG)
It is less than 0.5% than content；
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.
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).
The line density deviation ratio that a kind of low aberration polyester as described above imitates linen look abnormal contraction composite filament is ± 2.5%, is broken
Resistance to spalling CV value≤5.0%, extension at break CV value≤10.0%, boiling water shrinkage are 10.0 ± 1.0%, crimp contraction variation
Coefficient CV value≤10.0%, oil content are 1.0 ± 0.2%, fiber number：75-150dtex；The line density of low aberration polyester POY silks is inclined
Rate≤0.2%, fracture strength >=2.6cN/dtex, fracture strength CV value≤3.0%, elongation at break be 120.0 ±
10.0%, extension at break CV value≤6.0%.；Line density deviation ratio≤0.5% of low aberration polyester FDY silks, fracture strength >=
3.8cN/dtex, fracture strength CV value≤5.0%, elongation at break are 33.0 ± 3.0%, 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 as described above imitates linen look abnormal contraction composite filament, and the ethylene glycol magnesium and antimony glycol mix
In compound, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1.
Present invention also offers the preparation method that a kind of low aberration polyester imitates linen look abnormal contraction composite filament, a kind of low aberration is gathered
The preparation method of the imitative linen look abnormal contraction composite filament of ester is terephthalic acid (TPA) and ethylene glycol through esterification and in ethylene glycol magnesium and ethylene glycol
Polyester is made in the lower polycondensation of mixture through catalytic effect of antimony, then obtains polyester slice through pelletizing, after then polyester slice is dissolved and washed away i.e.
Polyester is made；By polyester through measuring, extruding, cooling down, oiling and winding, low aberration modified poly ester POY silks are made；By polyester slice
Through measuring, extruding, cooling down, oiling, stretching, thermal finalization and winding, low aberration polyester FDY silks are made；Then by low aberration polyester
Low aberration polyester is made through network of pooling capital, heating stretching, false twisting, thermal finalization and coiling and molding in POY silks and low aberration polyester FDY silks
Imitative linen look abnormal contraction composite filament；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 processing main technologic parameters：
A. polyester POY yarn spinnings technique；
Spinning temperature：280-290℃；
Chilling temperature：23-27℃；
Winding speed：2300-2500m/min；
B. polyester FDY yarn spinnings technique：
Spinning temperature：280-290℃；
Chilling temperature：20-25℃；
Network pressure：0.20-0.30Mpa；
One roller speed：2200-2600m/min；
One roll temperature：75-85℃；
Two roller speeds：3600-3900m/min；
Two roll temperatures：115-135℃；
Winding speed：3600-3800m/min；
C. compound filament processing process：
Spin fast 400-800m/min；
Shape over feed rate(OFR) 3.5-5.50%；
Wind over feed rate(OFR) 2.5-5.0；
T1：160-220℃；
T2：180-220℃；
DR：1.6-1.8；
D/Y:1.6-2.0；
Network pressure：0.05-0.3mpa；
High heat setting temperature in POY high elongation at tear, higher chilling temperature and DTY process is imitative fiber crops
The high elongation at tear of type abnormal contraction composite filament provides technical support.
A kind of low aberration polyester as described above imitates the preparation method of linen look abnormal contraction composite filament, the ethylene glycol with it is described
The mol ratio of terephthalic acid (TPA) is 1.2~2.0:1.
A kind of low aberration polyester as described above imitates the preparation method of linen look abnormal contraction composite filament, the ethylene glycol magnesium and second
In the mixture of glycol antimony, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1；The catalyst amount is described to benzene two
The 0.01%~0.05% of formic acid quality.
A kind of low aberration polyester as described above imitates the preparation method of linen look abnormal contraction composite filament, and the stabilizer is selected from phosphorus
One kind in triphenyl phosphate ester, trimethyl phosphate and Trimethyl phosphite, stabilizing agent dosage are the terephthalic acid (TPA) weight
0.01%~0.05%.For stabilizer mainly based on phosphate, main function is that catching reaction is caused certainly in the course of the polymerization process
By base, side reaction is reduced.
A kind of low aberration polyester as described above imitates the preparation method of linen look abnormal contraction composite filament, and the water is with dissolveing and washing away agent
Mass ratio 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 that to dissolve and wash away agent be second
One kind in glycol monoethyl ether, propyl cellosolve and ethylene glycol monobutyl ether (EGMBE), what addition was a small amount of in water dissolves and washes away agent, and it is molten to dissolve and wash away agent
Yu Shui, while most of low molecular ethers and ester are also can dissolve, be advantageous to improve effect and the reduction of oligomer of washing.
A kind of low aberration polyester as described above imitates the preparation method of linen look abnormal contraction composite filament, and the washing refers to brew
70~80 DEG C of 10~15min of hot water wash of polyester slice afterwards, are then cleaned, Drying and cooling is standby with cold water.
A kind of low aberration polyester as described above imitates the preparation method of linen look abnormal contraction composite filament, and the anti-ether agent is acetic acid
One kind in sodium and calcium acetate, anti-ether agent dosage are the 0.01%~0.05% of the terephthalic acid (TPA) weight.Anti- ether agent passes through
The generation that a small amount of NaAc reduces ether in acid condition is added, 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 to imitate linen look abnormal contraction composite filament, using relatively mild a kind of contracting
Poly- catalyst glycol magnesium, the less side reaction triggered during the course of the reaction is less and process in less thermal degradation,
Reduce the generation of oligomer in process.Polyester slice is through water and dissolves and washes away agent at 130 DEG C, there is brew under the conditions of 0.3MPa
Beneficial to the effect for improving washing and the reduction of oligomer.The reduction of oligomer so that dyeing polyester fibers and post-processing heat setting
In, oligomer reduces out of fiber to the amount of external migration, reduces color spot and bar flower occurs, ensure that fiber level-dyeing property and friction
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.
● bulk and surface many wire rings of the imitative linen look abnormal contraction composite filament of present invention gained, eliminate chemical fiber wire
The aurora defect of fabric, there is excellent warmth retention property.The high loft of imitative linen look abnormal contraction composite filament simultaneously, increase fiber it
Between space.
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.
A kind of low aberration polyester of the present invention imitates linen look abnormal contraction composite filament, and low aberration polyester imitates linen look abnormal contraction composite filament
For the composite filament of low aberration polyester POY silks and low aberration polyester FDY silks through mixed fine processing composition, the low aberration polyester POY silks
Tiny wire ring is formed to be centered around around the low aberration polyester FDY silks；The low aberration polyester POY silks and low aberration polyester FDY
Silk be via polyester after dissolveing and washing away spinning and obtain, the fracture strength of the imitative linen look abnormal contraction composite filament of the low aberration polyester >=
3.0cN/dtex, elongation at break are 40.0 ± 3.0%, and crimp contraction is 2.50 ± 3.0%, and internet pricing is 95 ± 5/m,
Aberration Δ E is less than 0.200；The polyester is terephthalic acid (TPA) and ethylene glycol through esterification and in the mixed of ethylene glycol magnesium and antimony glycol
Polycondensation under compound catalytic action, then obtain polyester slice through pelletizing；In the section of industry polyester, oligomer mass percent contains
Amount is less than 0.5%, and the mass percentage content of diethylene glycol (DEG) is less than 0.5%；The molecular formula of ethylene glycol magnesium is Mg (OCH2CH2OH)2；
Dissolve and wash away and refer to the section after being granulated through water and dissolve and wash away agent brew and washing under the conditions of 120~130 DEG C with 0.2~0.3MPa.
Wherein, the line density deviation ratio that low aberration polyester imitates linen look abnormal contraction composite filament is ± 2.5%, fracture strength CV values
≤ 5.0%, extension at break CV value≤10.0%, boiling water shrinkage is 10.0 ± 1.0%, crimp contraction coefficient of variation CV values≤
10.0%, oil content is 1.0 ± 0.2%, fiber number：75-150dtex；The line density deviation ratio of low aberration polyester POY silks≤
0.2%, fracture strength >=2.6cN/dtex, fracture strength CV value≤3.0%, elongation at break is 120.0 ± 10.0%, fracture
Extend CV value≤6.0%.；Line density deviation ratio≤0.5% of low aberration polyester FDY silks, fracture strength >=3.8cN/dtex, break
Resistance to spalling CV value≤5.0%, elongation at break are 33.0 ± 3.0%, 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%.
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 low aberration polyester of the present invention imitates the preparation method of linen look abnormal contraction composite filament, by polyester through measuring, extruding,
Cool down, oil and wind, low aberration modified poly ester POY silks are made；By polyester slice through measuring, extruding, cooling down, oiling, stretching,
Thermal finalization and winding, low aberration polyester FDY silks are made；Then by low aberration polyester POY silks and low aberration polyester FDY silks through plying
Network, heating stretching, false twisting, thermal finalization and coiling and molding are made low aberration polyester and imitate linen look abnormal contraction composite filament.
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 low aberration polyester imitates the preparation method of linen look abnormal contraction composite filament, and 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 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；Obtain polyester, water
Mass ratio with dissolveing and washing away agent is 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：
A. polyester POY yarn spinnings technique；
Spinning temperature：280℃；
Chilling temperature：23℃；
Winding speed：2300m/min；
B. polyester FDY yarn spinnings technique：
Spinning temperature：280℃；
Chilling temperature：20℃；
Network pressure：0.20Mpa；
One roller speed：2200m/min；
One roll temperature：75℃；
Two roller speeds：3600m/min；
Two roll temperatures：115℃；
Winding speed：3600m/min；
C. compound filament processing process：
Spin fast 400m/min；
Sizing over feed rate(OFR) 3.5%；
Wind over feed rate(OFR) 2.5；
T1：160℃；
T2：180℃；
DR：1.6；
D/Y:1.6；
Network pressure：0.05mpa.
The fracture strength 3.1cN/dtex that low aberration polyester imitates linen look abnormal contraction composite filament is made, elongation at break is
42.5%, crimp contraction 2.75%, internet pricing is 99/m；Line density deviation ratio is+2.5%, fracture strength CV values
4.5%, extension at break CV value 9.8%, boiling water shrinkage 11.0%, crimp contraction coefficient of variation CV values 9.8%, oil content
For 1.2%, fiber number：75dtex；The line density deviation ratio 0.2% of low aberration polyester POY silks, fracture strength 2.7cN/dtex, break
Resistance to spalling CV values 2.9%, elongation at break 125%, extension at break CV values 5.8%；The line density of low aberration polyester FDY silks is inclined
Rate 0.45%, fracture strength 3.9cN/dtex, fracture strength CV values 4.5%, elongation at break 35.0%, extension at break CV
Value 9.6%, yarn unevenness CV1.98%, boiling water shrinkage 7.8%, oil content 0.70%.
(5) dye
Embodiment 2
A kind of low aberration polyester imitates the preparation method of linen look abnormal contraction composite filament, and 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 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：
A. polyester POY yarn spinnings technique；
Spinning temperature：290℃；
Chilling temperature：27℃；
Winding speed：2500m/min；
B. polyester FDY yarn spinnings technique：
Spinning temperature：290℃；
Chilling temperature：25℃；
Network pressure：0.30Mpa；
One roller speed：2600m/min；
One roll temperature：85℃；
Two roller speeds：3900m/min；
Two roll temperatures：135℃；
Winding speed：3800m/min；
C. compound filament processing process：
Spin fast 800m/min；
Sizing over feed rate(OFR) 5.50%；
Wind over feed rate(OFR) 5.0；
T1：220℃；
T2：220℃；
DR：1.8；
D/Y:2.0；
Network pressure：0.3mpa.
The fracture strength 3.5cN/dtex that low aberration polyester imitates linen look abnormal contraction composite filament is made, elongation at break is
37.0%, crimp contraction is -0.5%, and internet pricing is 90/m；Line density deviation ratio is -2.5%, fracture strength CV values
4.8%, extension at break CV value 9.6%, boiling water shrinkage 9.0%, crimp contraction coefficient of variation CV values 9.6%, oil content
For -0.1%, fiber number：150dtex；The line density deviation ratio 0.1% of low aberration polyester POY silks, fracture strength 2.7cN/dtex,
Fracture strength CV values 2.6%, elongation at break 125%, extension at break CV values 5.6%；The line density of low aberration polyester FDY silks
Deviation ratio 0.3%, fracture strength 3.9cN/dtex, fracture strength CV values 4.6%, elongation at break 35.0%, extension at break
CV values 8.9%, yarn unevenness CV1.94%, boiling water shrinkage 7.2%, oil content 0.80%.
(5) dye
Embodiment 3
A kind of low aberration polyester imitates the preparation method of linen look abnormal contraction composite filament, and 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 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：
A. polyester POY yarn spinnings technique；
Spinning temperature：285℃；
Chilling temperature：24℃；
Winding speed：2350m/min；
B. polyester FDY yarn spinnings technique：
Spinning temperature：285℃；
Chilling temperature：24℃；
Network pressure：0.25Mpa；
One roller speed：2500m/min；
One roll temperature：78℃；
Two roller speeds：3800m/min；
Two roll temperatures：118℃；
Winding speed：3700m/min；
C. compound filament processing process：
Spin fast 500m/min；
Sizing over feed rate(OFR) 4.5%；
Wind over feed rate(OFR) 3.0；
T1：180℃；
T2：190℃；
DR：1.7；
D/Y:1.8；
Network pressure：0.2mpa.
The fracture strength 3.4cN/dtex that low aberration polyester imitates linen look abnormal contraction composite filament is made, elongation at break is
42.0%, crimp contraction 4.5%, internet pricing is 97/m；Line density deviation ratio is -2.2%, fracture strength CV values
4.2%, extension at break CV value 9.5%, boiling water shrinkage 9.5%, crimp contraction coefficient of variation CV values 9.2%, oil content
For 1.2%, fiber number：85dtex；The line density deviation ratio 0.15% of low aberration polyester POY silks, fracture strength 2.8cN/dtex, break
Resistance to spalling CV values 2.6%, elongation at break 126%, extension at break CV values 5.3%；The line density of low aberration polyester FDY silks is inclined
Rate 0.3%, fracture strength 3.9cN/dtex, fracture strength CV values 4.6%, elongation at break 31%, extension at break CV values
9.1%, yarn unevenness CV1.98%, boiling water shrinkage 7.2%, oil content 0.68%.
(5) dye
Embodiment 4
A kind of low aberration polyester imitates the preparation method of linen look abnormal contraction composite filament, and 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 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 0.02% 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：
A. polyester POY yarn spinnings technique；
Spinning temperature：290℃；
Chilling temperature：23℃；
Winding speed：2300m/min；
B. polyester FDY yarn spinnings technique：
Spinning temperature：290℃；
Chilling temperature：25℃；
Network pressure：0.20Mpa；
One roller speed：2200m/min；
One roll temperature：75℃；
Two roller speeds：3900m/min；
Two roll temperatures：135℃；
Winding speed：3800m/min；
C. compound filament processing process：
Spin fast 400m/min；
Sizing over feed rate(OFR) 3.5%；
Wind over feed rate(OFR) 2.5；
T1：220℃；
T2：220℃；
DR：1.6；
D/Y:1.6；
Network pressure：0.25-mpa.
The fracture strength that the imitative linen look abnormal contraction composite filament of low aberration polyester is made is 3.2cN/dtex, and elongation at break is
38.2%, crimp contraction 4.5%, internet pricing is 91/m；Line density deviation ratio is 2.3%, fracture strength CV values
4.2%, extension at break CV value 9.6%, boiling water shrinkage 10.0%, crimp contraction coefficient of variation CV values 9.5%, oil content
For -1.0%, fiber number：82dtex；The line density deviation ratio 0.15% of low aberration polyester POY silks, fracture strength 2.8cN/dtex,
Fracture strength CV values 2.2%, elongation at break 115%, extension at break CV values 5.2%.；The line of low aberration polyester FDY silks is close
Spend deviation ratio 0.35%, fracture strength 3.9cN/dtex, fracture strength CV values 4.8%, elongation at break 31%, extension at break
CV values 9.6%, yarn unevenness CV1.96%, boiling water shrinkage 7.7%, oil content 0.85%.
(5) dye
Claims (9)
1. a kind of low aberration polyester imitates linen look abnormal contraction composite filament, it is characterized in that：The low aberration polyester is imitated the different contraction of linen look and answered
The composite filament that plying is low aberration polyester POY silks and the mixed fine processing of low aberration polyester FDY silks warp forms, the low aberration polyester
POY silks form tiny wire ring and are centered around around the low aberration polyester FDY silks；The low aberration polyester POY silks gather with low aberration
Ester FDY silks be via polyester after dissolveing and washing away spinning and obtain, the low aberration polyester imitates the fracture strength of linen look abnormal contraction composite filament
>=3.0cN/dtex, elongation at break be 40.0 ± 3.0%, crimp contraction be 2.50 ± 3.0%, internet pricing be 95 ± 5/
M, aberration Δ E are less than 0.200；The polyester is terephthalic acid (TPA) and ethylene glycol through esterification and in ethylene glycol magnesium and antimony glycol
The lower polycondensation of mixture through catalytic effect, then obtain polyester slice 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；
Described dissolve and wash away refers to the section after being granulated through water and dissolves and washes away agent after brew under the conditions of 120~130 DEG C with 0.2~0.3MPa
Washing.
2. a kind of low aberration polyester according to claim 1 imitates linen look abnormal contraction composite filament, it is characterised in that the low color
The line density deviation ratio that poor polyester imitates linen look abnormal contraction composite filament is ± 2.5%, fracture strength CV value≤5.0%, extension at break
CV value≤10.0%, boiling water shrinkage are 10.0 ± 1.0%, crimp contraction coefficient of variation CV value≤10.0%, and oil content is
1.0 ± 0.2%, fiber number：75-150dtex；Line density deviation ratio≤0.2% of low aberration polyester POY silks, fracture strength >=
2.6cN/dtex, fracture strength CV value≤3.0%, elongation at break are 120.0 ± 10.0%, extension at break CV value≤6.0%；
Line density deviation ratio≤0.5% of low aberration polyester FDY silks, fracture strength >=3.8cN/dtex, fracture strength CV values≤
5.0%, elongation at break is 33.0 ± 3.0%, extension at break CV value≤10.0%, yarn unevenness CV≤2.00%, boiling water
Shrinkage factor 7.5 ± 0.5%, oil content 0.90 ± 0.20%.
3. such as a kind of low aberration polyester according to any one of claims 1 to 2 imitates the preparation method of linen look abnormal contraction composite filament,
It is characterized in that：By polyester through measuring, extruding, cooling down, oiling and winding, low aberration polyester POY silks are made；By polyester slice through meter
Measure, extrude, cooling down, oiling, stretching, thermal finalization and winding, low aberration polyester FDY silks are made；Then by low aberration polyester POY silks
The imitative fiber crops of low aberration polyester are made through network of pooling capital, heating stretching, false twisting, thermal finalization and coiling and molding with low aberration polyester FDY silks
Type abnormal contraction composite filament.
4. a kind of low aberration polyester according to claim 3 imitates the preparation method of linen look abnormal contraction composite filament, it is characterised in that main
Technique is wanted to 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 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 to obtain polyester；
(4) spinning processing main technologic parameters：
A. low aberration polyester POY yarn spinning techniques；
Spinning temperature：280-290℃；
Chilling temperature：23-27℃；
Winding speed：2300-2500m/min；
B. low aberration polyester FDY yarn spinning techniques：
Spinning temperature：280-290℃；
Chilling temperature：20-25℃；
Network pressure：0.20-0.30MPa；
One roller speed：2200-2600m/min；
One roll temperature：75-85℃；
Two roller speeds：3600-3900m/min；
Two roll temperatures：115-135℃；
Winding speed：3600-3800m/min；
C. compound filament processing process：
Spin fast 400-800m/min；
Shape over feed rate(OFR) 3.5-5.50%；
Wind over feed rate(OFR) 2.5-5.0；
T1：160-220℃；
T2：180-220℃；
DR：1.6-1.8；
D/Y:1.6-2.0；
Network pressure：0.05-0.3MPa.
5. a kind of low aberration polyester according to claim 4 imitates the preparation method of linen look abnormal contraction composite filament, its feature exists
In the mol ratio of the ethylene glycol and the terephthalic acid (TPA) is 1.2~2.0:1.
6. a kind of low aberration polyester according to claim 4 imitates the preparation method of linen look abnormal contraction composite filament, its feature exists
In in the mixture of the ethylene glycol magnesium and antimony glycol, ethylene glycol magnesium is 2~3 with antimony glycol mass ratio:1；The catalysis
Agent dosage is the 0.01%~0.05% of the terephthalic acid (TPA) quality；The stabilizer is selected from triphenyl phosphate, tripotassium phosphate
One kind in ester and Trimethyl phosphite, stabilizing agent dosage are the 0.01%~0.05% of the terephthalic acid (TPA) weight.
7. a kind of low aberration polyester according to claim 4 imitates the preparation method of linen look abnormal contraction composite filament, its feature exists
In the water and the mass ratio for dissolveing and washing away agent are 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 to dissolve and wash away agent as one kind in ethylene glycol monoethyl ether, propyl cellosolve and ethylene glycol monobutyl ether (EGMBE).
8. a kind of low aberration polyester according to claim 4 imitates the preparation method of linen look abnormal contraction composite filament, its feature exists
In the washing refers to 70~80 DEG C of 10~15min of hot water wash of polyester slice after brew, is then cleaned with cold water, and drying is cold
It is standby.
9. a kind of low aberration polyester according to claim 4 imitates the preparation method of linen look abnormal contraction composite filament, its feature exists
In the anti-ether agent is one kind in sodium acetate and calcium acetate, and anti-ether agent dosage is the 0.01% of the terephthalic acid (TPA) weight
~0.05%.
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| CN108130624B (en) * | 2017-12-14 | 2020-05-05 | 江苏恒力化纤股份有限公司 | Polyester linen-like different-shrinkage composite yarn and preparation method thereof |
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