CN104480564A - Super-bright light trefoil irregular FDY fiber and preparation method thereof - Google Patents
Super-bright light trefoil irregular FDY fiber and preparation method thereof Download PDFInfo
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Abstract
The invention relates to super-bright light trefoil irregular FDY fiber and a preparation method thereof. The super-bright light trefoil irregular FDY fiber is made of modified polyester and is manufactured by spinning the modified polyester by using a trefoil irregular spinneret plate of which the spinneret orifice has a Y-shaped structure; the modified polyester consists of polyester and amino fatty acid gylcol ester; the amino fatty acid gylcol ester is dispersed among molecular chains of the polyester and has hydrogen-bond interaction to the polyester, so that the relative positions of the molecular chains of the amino fatty acid gylcol ester and the polyester are fixed; under the condition of 90-130 DEG C, the free volume space of a part of the molecular chains inside the super-bright light trefoil irregular FDY fiber is increased by 20-30v/v%. Under the condition that identical pigment such as disperse red 3B is used, the super-bright light trefoil irregular FDY fiber has a dyeing rate which is much higher than that of ordinary fiber, and color flooding is reduced after dyeing. The super-bright light trefoil irregular FDY fiber can be used in fields such as woven satin fabrics and imitated silk fabrics.
Description
Technical field
The invention belongs to polyester fiber technical field, relate to a kind of superbright light three leaf abnormity FDY fiber and preparation method thereof.
Background technology
Polyethylene terephthalate (PET) fiber is since appearance, and obtain because of the performance of its excellence and rapidly develop, its output has become the hat of world's synthetic fiber.Polyester fiber has fracture strength and elastic modelling quantity is high, and resilience is moderate, and heat setting is excellent, a series of premium properties such as the good and acid-fast alkali-proof corrosion resistance of heat-resisting light resistance, and fabric has the advantages such as crease-resistant, stiffness is good, so, the fields such as polyester fiber is widely used in clothes, family is spun.
PET belongs to symmetric straight chain macromolecular, strand is not containing side-chain radical, regularity is very good, its main chain contains the phenyl ring of rigidity and flexible alkyl, and the ester group be directly connected with phenyl ring and phenyl ring constitute the conjugated system of rigidity, thus constrain rotating freely of its soft segment.The impact of this structure on glass transition temperature is obvious, and add the wall ridge of molecule segment motion, the glass transition temperature of PET is higher, needs to dye at very high temperatures, promotes that dye molecule is to the diffusion of fibrous inside.In addition, the strand of PET is regular, good crystallinity, and strand arrangement is tight, and the polar group that strand is not had an effect with dye molecule, make the colouring of polyester fiber more difficult.
For solving the problem of PET dyeing difficulty, now adopt technology or method mainly by introducing the method that dye molecule accepts base or increases polyester amorphous domain amount, although the dyeability of polyester can be improved, destroy the segment regularity of PET, to reduce the performance of polyester fiber to obtain the raising of dyeability.When not destroying polyester fiber crystallinity and permutation degree, the method adopted at present has three kinds of colouring methods such as support methods, high temperature and high pressure method and high temperature thermosoling.
Superbright light trilobal terylene crimped filament, mainly be shaped by melt spinning, cross section special-shapedization and Asymmetrical cooling, give polyester fiber there is gloss as real silk and feel, fabric to become clear the silk light sensation of sense and soft elegance, not only have outside excellent optical characteristics, because the fibrous appearance of odd-shaped cross section is irregular, the arrangement between fiber cannot be tight, the corresponding increase in space, thus fabric feeling is more abundant, bulkiness, good permeability, have superbright flash effect.Its product is mainly used in the pile fabrics such as silk like fabric fabric, wool-like fabric, corduroy, knitting wool, drapery etc.Especially in the large field of clothing, decoration and fabrics for industrial use three, wide market prospects and economic benefit is had.
Summary of the invention
The object of this invention is to provide a kind of superbright light three leaf abnormity FDY fiber and preparation method thereof, the present invention utilizes amino ethylene glycol fatty acid when uniform temperature condition, the increasing degree of free volume is far longer than the characteristic of polyester macromolecule chain, entering the degree of polyester inside by improving DISPERSE DYES molecule, improving the dyeability of polyester; Simultaneously due in amino ethylene glycol fatty acid molecule in the first amino existence, increase the hydrogen bond action between itself and polyester macromolecule chain, add compatibility and the dispersion in the polyester of it and polyester, decrease migration to greatest extent.Polyester construction regularity, crystallinity are not destroyed simultaneously, maintain the premium properties of polyester.
A kind of superbright light three leaf abnormity FDY fiber of the present invention, material is modified poly ester, obtains through three leaf profile spinneret spinning; Described superbright light three leaf abnormity FDY fiber is under temperature is 90 ~ 130 DEG C of conditions, and the free volume space between fibrous inside strand increases; Described superbright light three leaf abnormity FDY fiber fracture strength >=3.8cN/dtex, extension at break CV value≤10.0%; Described modified poly ester is made up of polyester and amino ethylene glycol fatty acid, described amino ethylene glycol fatty acid is dispersed between the strand of described polyester, and have hydrogen bond action between the strand of described amino ethylene glycol fatty acid and described polyester, the relative position of the strand of described amino ethylene glycol fatty acid and described polyester is fixed; The molecular structure of described amino ethylene glycol fatty acid is:
H
2N(CH
2)
nCOOCH
2CH
2OOC(CH
2)
nNH
2；
Wherein, n=10-50.
As preferred technical scheme:
Described a kind of superbright light three leaf abnormity FDY fiber, line density deviation ratio≤0.5% of described superbright light three leaf abnormity FDY fiber, fracture strength CV value≤5.0%, elongation at break is 33.0 ± 3.0%, yarn unevenness CV≤2.00%, boiling water shrinkage 7.5 ± 0.5%, oil content 0.90 ± 0.20%.
Described a kind of superbright light three leaf abnormity FDY fiber, the percentage by weight that described amino ethylene glycol fatty acid accounts for described superbright light three leaf abnormity FDY fiber is 0.5 ~ 2.5%, and wherein spinnerets adopts three leaf profile spinnerets.
Present invention also offers the preparation method of a kind of superbright light three leaf abnormity FDY fiber, by modified poly ester through measure, extruding, cool, oil, stretch, heat setting and winding, the special-shaped FDY fiber of obtained superbright light three leaf; Wherein spinning process adopts three leaf profile spinnerets.Three leaves of three leaf abnormity spinneret orifices of spinning process spinnerets are mutually 120 degree of angles, and the long ratio wide with leaf of leaf is 2 ~ 5:1.
The described temperature extruded is 280 ~ 290 DEG C;
The wind-warm syndrome of described cooling is 20 ~ 25 DEG C;
The speed of described winding is 4000 ~ 4200m/min;
Filament number is 0.3 ~ 1.0dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
The preparation process of described modified poly ester comprises:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by binary of fatty acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 80 ~ 110 DEG C, refuxing esterification, cooling, separating-purifying obtains binary of fatty acids mono-methyl; Esterification time is generally 2 ~ 3h;
Described binary of fatty acids is that dodecanedicarboxylic acid is to the one in dopentacontane dicarboxylic acids; Reaction equation is:
HOOC(CH
2)
nCOOH+CH
3OH→CH
3OOC(CH
2)
nCOOH
Wherein n=10 ~ 50.
2) by described binary of fatty acids mono-methyl, lead tetraacetate and lithium bromide in molar ratio 1:1:1 be dissolved in benzene, wherein the concentration of binary of fatty acids mono-methyl is 0.05 ~ 0.1mol/L, under nitrogen atmosphere, 80 ~ 90 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid reaction 2 ~ 3 hours, then wash, purify and drying, obtain product bromo aliphatic acid; Reaction equation is:
3) by the ammoniacal liquor of bromo aliphatic acid and 15 ~ 25wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is no more than 70 DEG C, until bubble-free produces, namely stop distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, product vacuumize is obtained the amino aliphatic acid of product; Vacuum drying temperature can adopt 60 ~ 70 DEG C; Reaction equation is:
HOOC(CH
2)
nBr+NH
3→HOOC(CH
2)
nNH
2+NH
4Br；
4) by ethylene glycol and amino aliphatic acid in molar ratio for 1.1:2 stirs, and by 1 ~ 3% of amino fatty acid wt, to add concentration be the sulfuric acid of 40 ~ 50wt% is catalyst, carry out esterification, esterification reaction temperature is 160 ~ 220 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino ethylene glycol fatty acid through separating-purifying; Reaction equation is:
HOOC(CH
2)
nNH
2+HOCH
2CH
2OH→
H
2N(CH
2)
nCOOCH
2CH
2OOC(CH
2)
nNH
2；
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt terephthalic acid (TPA) and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at normal pressure ~ 0.3MPa, and temperature is at 250 ~ 260 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, in esterification products, add catalyst and stabilizing agent, under the condition of negative pressure, start polycondensation reaction, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 260 ~ 270 DEG C, and the reaction time is 30 ~ 50 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino ethylene glycol fatty acid, and stir, usually stir 15 ~ 20 minutes;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 275 ~ 280 DEG C, 50 ~ 90 minutes reaction time;
Obtained modified poly ester;
The preparation method of a kind of superbright light three leaf abnormity FDY fiber as above, the mol ratio of described ethylene glycol and described terephthalic acid (TPA) is 1.2 ~ 2.0:1.
The preparation method of a kind of superbright light three leaf abnormity FDY fiber as above, described catalyst is selected from the one in antimonous oxide, antimony glycol and antimony acetate, and catalyst amount is 0.01% ~ 0.05% of described terephthalic acid (TPA) weight.
The preparation method of a kind of superbright light three leaf abnormity FDY fiber as above, described stabilizing agent is selected from the one in triphenyl phosphate, trimethyl phosphate and Trimethyl phosphite, and stabilizing agent dosage is 0.01% ~ 0.05% of described terephthalic acid (TPA) weight.
The preparation method of a kind of superbright light three leaf abnormity FDY fiber as above, is washed till without adopting liquor argenti nitratis ophthalmicus to detect till bromide ion with deionized water.
The preparation method of a kind of superbright light three leaf abnormity FDY fiber as above, the described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70 ~ 80%, and concentrated sulfuric acid addition is 1 ~ 3wt% of binary of fatty acids; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 40 ~ 50%, and dilute sulfuric acid addition is 1 ~ 3wt% of binary of fatty acids mono-methyl.
Polyester fiber is when dyeing, and the upper dye process of DISPERSE DYES to polyester fiber can be divided into the next stage:
1) DISPERSE DYES in dye liquor with the flowing of dye liquor gradually near fiber interface; 2) DISPERSE DYES is adsorbed by fiber surface rapidly near fiber interface; 3), after DISPERSE DYES is adsorbed to fiber surface, in fiber, produce a concentration difference or inside and outside dyestuff chemistry potential difference, dyestuff will spread to fibrous inside; 4) DISPERSE DYES diffusion velocity and fiber amorphous region content, hole or free volume content relevant, therefore the dyeing speed of DISPERSE DYES is except dyestuff solubility in the solution, is also decided by that the degree of swelling of fiber during the outer and dyeing of the structure of fiber is relevant.
Polyster fibre is hydrophobic synthetic fiber, the active group resembling energy cellulose or protein fibre and dyestuff and occur to combine is lacked in terylene molecular structure, terylene molecules align must be tightr, only less space is there is in fiber, under the wet condition when dyeing, polyester fiber can not by acutely swelling and make space increase as cotton fiber, and dye molecule is difficult to see through fibrous inside.Therefore, the free volume between improving fiber molecule will contribute to the carrying out of dyeing.
The molecular chain structure of polyester is the linear macromolecule containing benzene ring structure, the functional group's marshalling on strand, and unbranched, the flexibility of macromolecular chain is poor.Simultaneously the good and rigidity of the regularity of polyester all comparatively greatly, and intermolecular active force is larger.Compared with other macromolecular materials, the strand generation slippage of polyester, rotation all comparatively difficulty, these characteristics hinder dyestuff and enter polyester inside, and thus dyeability is poor.
Amino ethylene glycol fatty acid is mainly with C-C, C-O key is main, there is certain molecular weight simultaneously, namely there is the strand of certain length, strand flexibility is larger, the amount of crimp of amino ethylene glycol fatty acid is larger compared with the linear macromolecule of benzene ring structure, simultaneously strong to the linear macromolecule of sensitivity comparatively containing benzene ring structure of temperature.When the temperature is changed, amino ethylene glycol fatty acid moves prior to the linear macromolecule containing benzene ring structure, and the free volume linear macromolecule be far longer than containing benzene ring structure that motion produces produces.
Added the free volume of polyester fiber by fatty acid ester to increase the diffusion of dyestuff, improve the dyeability of polyester fiber, make fiber obtain high dye-uptake.
Oxygen in fatty acid ester can form hydrogen bond, but oxygen is when centre position, and the factor hydrogen reduced in itself and polyester macromolecule chain such as curling due to space steric effect and fatty acid ester molecules forms the quantity of hydrogen bond; If amino is on α position, i.e. amino acids, because amino and carbonyl interact, be also unfavorable for that the hydrogen in amino and polyester macromolecule chain forms hydrogen bond; When the amino of amino fatty acid ester is in macromolecular end position, macromolecular curling little on its impact, add the formation that the amino in amino fatty acid ester and the hydrogen in polyester macromolecule chain form hydrogen bond, improve the active force between amino fatty acid ester and polyester macromolecule chain simultaneously, decrease slippage and the migration of amino fatty acid ester.
Add compatibility and the dispersion in the polyester of amino fatty acid ester and polyester, decrease migration to greatest extent.Polyester construction regularity, crystallinity are not destroyed simultaneously, maintain the premium properties of polyester.
Beneficial effect:
1. the superbright light three leaf abnormity FDY fiber of gained of the present invention, because amino ethylene glycol fatty acid is based on C-C, have certain molecular weight simultaneously, namely have the strand of certain length, strand flexibility is comparatively large, and amino adds the compatibility with polyester.The fiber of gained and the compatibility of amino ethylene glycol fatty acid good.
2. due in amino ethylene glycol fatty acid molecule in the first amino existence, increase and hydrogen bond action between it and polyester macromolecule chain, add compatibility and the dispersion in the polyester of it and polyester, decrease migration to greatest extent.
3. the modified poly ester of gained of the present invention, because the content of amino ethylene glycol fatty acid is less, does not destroy polyester construction regularity, crystallinity, maintains the premium properties of polyester.
4. the amount of crimp of amino ethylene glycol fatty acid is larger compared with the linear macromolecule of benzene ring structure, simultaneously strong to the linear macromolecule of sensitivity comparatively containing benzene ring structure of temperature.When the temperature is changed, move prior to the linear macromolecule containing benzene ring structure, the free volume linear macromolecule be far longer than containing benzene ring structure that the motion of amino ethylene glycol fatty acid produces produces, and increases the diffusion of additive, improves the functional of polyester.
5. fatty acid ester adds the free volume of polyester fiber to increase the diffusion of dyestuff, improves the dyeability of polyester fiber,
FDY fiber is made to obtain high dye-uptake.
Detailed description of the invention
Below in conjunction with detailed description of the invention, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
A kind of superbright light three leaf abnormity FDY fiber of the present invention, material is modified poly ester, obtains through three leaf profile spinneret spinning; Described superbright light three leaf abnormity FDY fiber is under temperature is 90 ~ 130 DEG C of conditions, and the free volume space between fibrous inside strand increases 20 ~ 30v/v%; Described superbright light three leaf abnormity FDY fiber, fracture strength >=3.8cN/dtex, elongation at break is 33.0 ± 3.0%; Described modified poly ester is made up of polyester and amino ethylene glycol fatty acid, described amino ethylene glycol fatty acid is dispersed between the strand of described polyester, and have hydrogen bond action between the strand of described amino ethylene glycol fatty acid and described polyester, the relative position of the strand of described amino ethylene glycol fatty acid and described polyester is fixed;
The molecular structure of described amino ethylene glycol fatty acid is:
H
2N(CH
2)
nCOOCH
2CH
2OOC(CH
2)
nNH
2；
Wherein, n=10-50.
Described a kind of superbright light three leaf abnormity FDY fiber, line density deviation ratio≤0.5% of described superbright light three leaf abnormity FDY fiber, 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%.
Described a kind of superbright light three leaf abnormity FDY fiber, the percentage by weight that described amino ethylene glycol fatty acid accounts for described superbright light three leaf abnormity FDY fiber is 0.5 ~ 2.5%, and wherein spinnerets adopts three leaf profile spinnerets.It is 2 ~ 5:1 that three leaves of three leaf abnormity spinneret orifices of spinning process spinnerets are mutually the ratio that 120 degree of angle leaves are long and leaf is wide.
Colouring method: dyeing DISPERSE DYES is Disperse Red 3B, and disperse blue SE-2R disperses bright blue S-GL, and fiber dyes respectively in High Temperature High Pressure machine.Before dye, fiber non-ionic surface active agent was 60 DEG C of process 30 minutes.Dye dosage is 2.0% (o.w.f); Dispersant NNO1.2g/L, pH value is 5, and bath raio is 1:50, and 60 DEG C enter dye, are warming up to 90 DEG C, 100 DEG C, 110 DEG C, 120 DEG C 130 DEG C of each constant temperature dyeing 1h.
Dye uptake adopts raffinate colorimetric method to determine, draw appropriate dyeing stoste and dyeing residual liquid, add N, N-2 methylformamide (DMF) and distilled water, be the ratio of DMF in dye liquor to be measured and water be 70/30 (v/v), dye liquor absorbance adopts ultraviolet-visible spectrophotometer to measure, and calculates dye uptake with following formula.
In above formula, A0 and A1 is respectively the absorbance of dyeing stoste and dyeing residual liquid.
Embodiment 1
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by dodecanedicarboxylic acid and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 80 DEG C, refuxing esterification, cooling, separating-purifying obtains dodecanedicarboxylic acid mono-methyl; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 3wt% of dodecanedicarboxylic acid;
2) described dodecanedicarboxylic acid mono-methyl, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein dodecanedicarboxylic acid mono-methyl concentration is 0.05mol/L, under nitrogen atmosphere, 80 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid and reacts 2 hours, then wash, purify and drying, obtain product bromoundecane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 40%, and dilute sulfuric acid addition is the 3wt% of dodecanedicarboxylic acid mono-methyl;
3) by the ammoniacal liquor of bromoundecane carboxylic acid and 15wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 60 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, product vacuumize is obtained product amino-undecanoic carboxylic acid;
4) by ethylene glycol and amino-undecanoic carboxylic acid in molar ratio for 1.1:2 stirs, and add by 1% of amino-undecanoic carboxylic acid weight the sulfuric acid that concentration is 40wt%, carry out esterification, esterification reaction temperature is 160 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino-undecanoic carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:1.2 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.3MPa, and temperature is 250 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimonous oxide of 0.01% of terephthalic acid (TPA) weight and the triphenyl phosphate of terephthalic acid (TPA) weight 0.01% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 260 DEG C, and the reaction time is 50 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino-undecanoic carboxylic acid glycol ester, and stir 15 minutes; Described amino-undecanoic carboxylic acid glycol ester, addition is the 0.5wt% of modified poly ester;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 275 DEG C, 90 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 15000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 280 DEG C;
The wind-warm syndrome of described cooling is 20 DEG C;
The speed of described winding is 4000m/min;
Filament number is 0.3dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 90 DEG C of conditions, free volume space between fibrous inside strand increases 20v/v%, line density deviation ratio is 1.5%, fracture strength is 3.8cN/dtex, fracture strength CV value is 5.0%, and elongation at break is 30%, extension at break CV value is 10.0%, yarn unevenness CV is 2.00%, boiling water shrinkage 7%, oil content 0.70%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 48.5 | 80.2 | 89.7 | 90.5 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 52.4 | 85.1 | 92.3 | 93.4 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 73.8 | 84.6 | 87.1 | 88.6 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 2
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by dopentacontane dicarboxylic acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 110 DEG C, refuxing esterification, cooling, separating-purifying obtains dopentacontane mono methyl dicarboxylate; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 3wt% of dopentacontane dicarboxylic acids;
2) described dopentacontane mono methyl dicarboxylate, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein dopentacontane mono methyl dicarboxylate concentration is 0.07mol/L, under nitrogen atmosphere, 85 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid and reacts 3 hours, then wash, purify and drying, obtain product bromo henpentacontane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 40%, and dilute sulfuric acid addition is the 3wt% of dopentacontane mono methyl dicarboxylate;
3) by the ammoniacal liquor of bromo henpentacontane carboxylic acid and 25wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 62 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino henpentacontane carboxylic acid of product;
4) by ethylene glycol and amino henpentacontane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 2% of amino henpentacontane carboxylic acid weight the sulfuric acid that concentration is 45wt%, carry out esterification, esterification reaction temperature is 220 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino henpentacontane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:2.0 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.2MPa, and temperature is at 260 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimonous oxide of 0.05% of terephthalic acid (TPA) weight and the triphenyl phosphate of terephthalic acid (TPA) weight 0.05% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 270 DEG C, and the reaction time is 30 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino henpentacontane carboxylic acid glycol ester, and stir 20 minutes; Described amino henpentacontane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 2.5%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 280 DEG C, 50 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 30000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting, winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 290 DEG C;
The wind-warm syndrome of described cooling is 25 DEG C;
The speed of described winding is 4200m/min;
Filament number is 1.0dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 130 DEG C of conditions, free volume space between fibrous inside strand increases 30v/v%, line density deviation ratio is 1.4%, fracture strength is 3.9cN/dtex, fracture strength CV value is 4.9%, and elongation at break is 31%, extension at break CV value is 9.5.0%, yarn unevenness CV is 1.90%, boiling water shrinkage 7.0%, oil content 0.90%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 48.7 | 80.1 | 89.3 | 90.3 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 52.2 | 84.1 | 92.0 | 94.4 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 73.8 | 84.6 | 87.1 | 88.4 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 3
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by pentacosane dicarboxylic acid and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 85 DEG C, refuxing esterification, cooling, separating-purifying obtains pentacosane dicarboxylic acid mono-methyl; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 3wt% of pentacosane dicarboxylic acid;
2) described pentacosane dicarboxylic acid mono-methyl, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein pentacosane dicarboxylic acid mono-methyl concentration is 0.08mol/L, under nitrogen atmosphere, 90 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid and reacts 2.5 hours, then wash, purify and drying, obtain product bromotetradecane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 50%, and dilute sulfuric acid addition is the 3wt% of pentacosane dicarboxylic acid mono-methyl;
3) by the ammoniacal liquor of bromotetradecane carboxylic acid and 20wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 60 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino tetradecane carboxylic acid of product;
4) by ethylene glycol and amino tetradecane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 2% of the amino tetradecane carboxylic acid weight sulfuric acid that concentration is 50wt%, carry out esterification, esterification reaction temperature is 190 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino tetradecane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:1.6 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.3MPa, and temperature is at 255 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimonous oxide of 0.03% of terephthalic acid (TPA) weight and the triphenyl phosphate of terephthalic acid (TPA) weight 0.03% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 265 DEG C, and the reaction time is 40 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino tetradecane carboxylic acid glycol ester, and stir 16 minutes; Described amino tetradecane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 1.0%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 276 DEG C, 70 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 22500; Described modified poly ester is under temperature is 100 DEG C of conditions, and the free volume space of polyester interior molecules interchain increases 20v/v%.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 282 DEG C;
The wind-warm syndrome of described cooling is 21 DEG C;
The speed of described winding is 4100m/min;
Filament number is 0.4dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 90 DEG C of conditions, free volume space between fibrous inside strand increases 20v/v%, line density deviation ratio is 1.3%, fracture strength is 4.0cN/dtex, fracture strength CV value is 4.8%, and elongation at break is 33.0%, extension at break CV value is 9.6%, yarn unevenness CV is 1.80%, boiling water shrinkage 7.5%, oil content 0.8%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 48.3 | 80.1 | 88.7 | 90.5 | 91.3 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 53.3 | 85.1 | 92.1 | 93.4 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.4 | 73.8 | 84.4 | 87.1 | 88.7 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 4
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by eicosane dicarboxylic acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 85 DEG C, refuxing esterification, cooling, separating-purifying obtains eicosane mono methyl dicarboxylate; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 3wt% of eicosane dicarboxylic acids;
2) described eicosane mono methyl dicarboxylate, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein eicosane mono methyl dicarboxylate concentration is 0.09mol/L, under nitrogen atmosphere, 80 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid and reacts 2.1 hours, then wash, purify and drying, obtain product bromo nonadecane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 43%, and dilute sulfuric acid addition is the 2wt% of eicosane mono methyl dicarboxylate;
3) by the ammoniacal liquor of bromo nonadecane carboxylic acid and 16wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 69 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino nonadecane carboxylic acid of product;
4) by ethylene glycol and amino nonadecane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 2% of amino nonadecane carboxylic acid weight the sulfuric acid that concentration is 42wt%, carry out esterification, esterification reaction temperature is 160 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino nonadecane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:1.2 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.15MPa, and temperature is at 251 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimonous oxide of 0.02% of terephthalic acid (TPA) weight and the triphenyl phosphate of terephthalic acid (TPA) weight 0.02% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 262 DEG C, and the reaction time is 33 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino nonadecane carboxylic acid glycol ester, and stir 17 minutes; Described amino nonadecane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 1.5%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 277 DEG C, 55 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 16000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 284 DEG C;
The wind-warm syndrome of described cooling is 22 DEG C;
The speed of described winding is 4000m/min;
Filament number is 0.5dtex;
Gained superbright light three leaf abnormity FDY fiber is under temperature is 90 DEG C of conditions, free volume space between fibrous inside strand increases 20v/v%, line density deviation ratio is 1.3%, fracture strength is 4.0cN/dtex, fracture strength CV value is 4.7%, and elongation at break is 31.0%, extension at break CV value is 10.0%, yarn unevenness CV is 1.7%, boiling water shrinkage 7.2%, oil content 0.8%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 48.8 | 82.1 | 90.1.7 | 90.2 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 |
| Disperse blue SE-2R | Modified fibre | 52.6 | 85.1 | 92.3 | 94.4 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 74.8 | 84.6 | 87.1 | 87.7 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 5
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by melissane dicarboxylic acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 90 DEG C, refuxing esterification, cooling, separating-purifying obtains melissane mono methyl dicarboxylate; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 3wt% of melissane dicarboxylic acids;
2) described melissane mono methyl dicarboxylate, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein melissane mono methyl dicarboxylate concentration be 0.10mol/L under nitrogen atmosphere, 85 DEG C of reactions, backflow, when no longer including gas and producing, add a certain amount of dilute sulfuric acid and react 2.3 hours, then wash, purify and drying, obtain product bromo nonacosane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 40%, and dilute sulfuric acid addition is the 3wt% of melissane mono methyl dicarboxylate;
3) by the ammoniacal liquor of bromo nonacosane carboxylic acid and 18wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 67 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino nonacosane carboxylic acid of product;
4) by ethylene glycol and amino nonacosane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 2% of amino nonacosane carboxylic acid weight the sulfuric acid that concentration is 48wt%, carry out esterification, esterification reaction temperature is 170 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino nonacosane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:1.5 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.3MPa, and temperature is at 254 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimony glycol of 0.01% of terephthalic acid (TPA) weight and the trimethyl phosphate of terephthalic acid (TPA) weight 0.03% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 266 DEG C, and the reaction time is 39 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino nonacosane carboxylic acid glycol ester, and stir 18 minutes; Described amino nonacosane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 2.5%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 278 DEG C, 60 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 22000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 280 DEG C;
The wind-warm syndrome of described cooling is 23 DEG C;
The speed of described winding is 4200m/min;
Filament number is 0.6dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 100 DEG C of conditions, free volume space between fibrous inside strand increases 25v/v%, line density deviation ratio is 1.2%, fracture strength is 4.1cN/dtex, fracture strength CV value is 5.0%, and elongation at break is 32.0%, extension at break CV value is 9.5%, yarn unevenness CV is 1.80%, boiling water shrinkage 7.3%, oil content 1.1%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 48.9 | 80.1 | 89.7 | 90.3 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 52.2 | 85.1 | 92.0 | 93.5 | 94.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 73.8 | 84.6 | 86.1 | 88.2 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 6
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by pentatriacontane dicarboxylic acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 95 DEG C, refuxing esterification, cooling, separating-purifying obtains pentatriacontane mono methyl dicarboxylate; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 2wt% of pentatriacontane dicarboxylic acids;
2) described pentatriacontane mono methyl dicarboxylate, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein pentatriacontane mono methyl dicarboxylate concentration be 0.09mol/L under nitrogen atmosphere, 90 DEG C of reactions, backflow, when no longer including gas and producing, add a certain amount of dilute sulfuric acid and react 2.6 hours, then wash, purify and drying, obtain product bromo tetratriacontane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 45%, and dilute sulfuric acid addition is the 1wt% of pentatriacontane mono methyl dicarboxylate
3) by the ammoniacal liquor of bromo tetratriacontane carboxylic acid and 20wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 69 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino tetratriacontane carboxylic acid of product;
4) by ethylene glycol and amino tetratriacontane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 1% of amino tetratriacontane carboxylic acid weight the sulfuric acid that concentration is 50wt%, carry out esterification, esterification reaction temperature is 180 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino tetratriacontane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:1.6 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.4MPa, and temperature is at 256 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimony acetate of 0.04% of terephthalic acid (TPA) weight and the Trimethyl phosphite of terephthalic acid (TPA) weight 0.02% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 267 DEG C, and the reaction time is 40 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino tetratriacontane carboxylic acid glycol ester, and stir 18 minutes; Described amino tetratriacontane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 2.0%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 275 DEG C, 70 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 24000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 288 DEG C;
The wind-warm syndrome of described cooling is 24 DEG C;
The speed of described winding is 4100m/min;
Filament number is 1.0dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 110 DEG C of conditions, free volume space between fibrous inside strand increases 30v/v%, line density deviation ratio is 1.5%, fracture strength is 3.9cN/dtex, fracture strength CV value is 5.0%, and elongation at break is 36%, extension at break CV value is 10.0%, yarn unevenness CV is 1.80%, boiling water shrinkage 8.0%, oil content 1.0%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 49.1 | 80.5 | 89.7 | 91.3 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 52.4 | 85.1 | 92.0 | 93.4 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 73.8 | 84.4 | 87.1 | 88.7 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 7
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
A preparation method for modified poly ester, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by tetracontane dicarboxylic acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 100 DEG C, refuxing esterification, cooling, separating-purifying obtains tetracontane mono methyl dicarboxylate; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 3wt% of tetracontane dicarboxylic acids;
2) described tetracontane mono methyl dicarboxylate, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein tetracontane mono methyl dicarboxylate concentration be 0.06mol/L under nitrogen atmosphere, 80 DEG C of reactions, backflow, when no longer including gas and producing, add a certain amount of dilute sulfuric acid and react 2.7 hours, then wash, purify and drying, obtain product bromo nonatriacontane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 48%, and dilute sulfuric acid addition is the 2wt% of tetracontane mono methyl dicarboxylate;
3) by the ammoniacal liquor of bromo nonatriacontane carboxylic acid and 22wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is 60 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino nonatriacontane carboxylic acid of product;
4) by ethylene glycol and amino nonatriacontane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 2% of amino nonatriacontane carboxylic acid weight the sulfuric acid that concentration is 46wt%, carry out esterification, esterification reaction temperature is 190 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino nonatriacontane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:1.8 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.2MPa, and temperature is at 258 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimony acetate of 0.05% of terephthalic acid (TPA) weight and the trimethyl phosphate of terephthalic acid (TPA) weight 0.03% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 268 DEG C, and the reaction time is 45 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino nonatriacontane carboxylic acid glycol ester, and stir 16 minutes; Described amino nonatriacontane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 1.5%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 275 DEG C, 75 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 25000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 290 DEG C;
The wind-warm syndrome of described cooling is 24 DEG C;
The speed of described winding is 4000m/min;
Filament number is 0.8dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 120 DEG C of conditions, free volume space between fibrous inside strand increases 30v/v%, line density deviation ratio is 1.5%, fracture strength is 4.0cN/dtex, fracture strength CV value is 4.8%, and elongation at break is 36.0%, extension at break CV value is 9.6%, yarn unevenness CV is 2.00%, boiling water shrinkage 7.7%, oil content 0.90%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 48.2 | 80.1 | 90.6 | 90.3 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 52.3 | 85.1 | 92.1 | 93.6 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 73.3 | 84.6 | 87.1 | 89.7 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Embodiment 8
A preparation method for superbright light three leaf abnormity FDY fiber, comprises the following steps:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by pentatetracontane dicarboxylic acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 110 DEG C, refuxing esterification, cooling, separating-purifying obtains pentatetracontane mono methyl dicarboxylate; The described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70%, and concentrated sulfuric acid addition is the 2wt% of pentatetracontane dicarboxylic acids;
2) described pentatetracontane mono methyl dicarboxylate, lead tetraacetate and lithium bromide are dissolved in (mol ratio 1:1:1) in benzene, wherein pentatetracontane mono methyl dicarboxylate concentration is 0.07mol/L, under nitrogen atmosphere, 88 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid and reacts 2.3 hours, then wash, purify and drying, obtain product bromo tetratetracontane carboxylic acid; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 45%, and dilute sulfuric acid addition is the 2wt% of pentatetracontane mono methyl dicarboxylate;
3) by the ammoniacal liquor of bromo tetratetracontane carboxylic acid and 25wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is no more than 70 DEG C, until bubble-free produces, namely stops distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, adopts liquor argenti nitratis ophthalmicus to detect, and product vacuumize is obtained the amino tetratetracontane carboxylic acid of product;
4) by ethylene glycol and amino tetratetracontane carboxylic acid in molar ratio for 1.1:2 stirs, and add by 1% of amino tetratetracontane carboxylic acid weight the sulfuric acid that concentration is 50wt%, carry out esterification, esterification reaction temperature is 210 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino tetratetracontane carboxylic acid glycol ester through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt mol ratio be the terephthalic acid (TPA) of 1:2.0 and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at 0.3MPa, and temperature is at 260 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, the antimony glycol of 0.02% of terephthalic acid (TPA) weight and the trimethyl phosphate of terephthalic acid (TPA) weight 0.05% is added in esterification products, polycondensation reaction is started under the condition of negative pressure, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 270 DEG C, and the reaction time is 50 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino tetratetracontane carboxylic acid glycol ester, and stir 20 minutes; Described amino tetratetracontane carboxylic acid glycol ester addition is the percentage by weight of modified poly ester is 2.0%;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 280 DEG C, 85 minutes reaction time;
Obtained modified poly ester, viscosity average molecular weigh is 30000.
(3) preparation of superbright light three leaf abnormity FDY fiber
By modified poly ester through measuring, extruding, cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 285 DEG C;
The wind-warm syndrome of described cooling is 23 DEG C;
The speed of described winding is 4200m/min;
Filament number is 0.9dtex;
The spinneret orifice of spinning process spinnerets is trilobal, symmetrical with the x, y and z axes being mutually 120 degree of angles.
Gained superbright light three leaf abnormity FDY fiber is under temperature is 130 DEG C of conditions, free volume space between fibrous inside strand increases 30v/v%, line density deviation ratio is 1.2%, fracture strength is 4.0cN/dtex, fracture strength CV value is 5.0%, and elongation at break is 35.0%, extension at break CV value is 10.0%, yarn unevenness CV is 2.00%, boiling water shrinkage 7.8%, oil content 0.8%.Superbright light three leaf abnormity FDY fiber dyeed, its dye-uptake is as follows:
The dye uptake (%) of fiber
| Dyestuff | Temperature | 90℃ | 100℃ | 110℃ | 120℃ | 130℃ |
| Disperse Red 3B | Modified fibre | 49.3 | 80.1 | 89.7 | 90.3 | 91.4 |
| General fibre | 28.2 | 46.3 | 78.5 | 81.7 | 90.2 | |
| Disperse blue SE-2R | Modified fibre | 52.5 | 86.1 | 92.6 | 93.4 | 93.8 |
| General fibre | 12.3 | 35.2 | 73.4 | 88.9 | 91.3 | |
| Disperse bright blue S-GL | Modified fibre | 48.5 | 73.8 | 84.6 | 87.1 | 89.7 |
| General fibre | 11.8 | 36.3 | 70.9 | 75.6 | 82.6 |
Claims (10)
1. a superbright light three leaf abnormity FDY fiber, is characterized in that: the material of described superbright light three leaf abnormity FDY fiber is modified poly ester, and the three leaf profile spinneret spinning being Y-shaped structure through spinneret orifice obtain; Fracture strength >=the 3.8cN/dtex of described superbright light three leaf abnormity FDY fiber, elongation at break is 33.0 ± 3.0%; Described modified poly ester is made up of polyester and amino ethylene glycol fatty acid, described amino ethylene glycol fatty acid is dispersed between the strand of described polyester, and have hydrogen bond action between the strand of described amino ethylene glycol fatty acid and described polyester, the relative position of the strand of described amino ethylene glycol fatty acid and described polyester is fixed; Described superbright light three leaf abnormity FDY fiber polyester is under temperature is 90 ~ 130 DEG C of conditions, and the free volume space between fibrous inside strand increases 20 ~ 30v/v%;
The molecular structure of described amino ethylene glycol fatty acid is:
H
2N(CH
2)
nCOOCH
2CH
2OOC(CH
2)
nNH
2；
Wherein, n=10-50.
2. a kind of superbright light three leaf abnormity FDY fiber according to claim 1, it is characterized in that, line density deviation ratio≤0.5% of described superbright light three leaf abnormity FDY fiber, fracture strength CV value≤5.0%, extension at break CV value≤10.0%, yarn unevenness CV value≤2.00%, boiling water shrinkage 7.5 ± 0.5%, oil content 0.90 ± 0.20%.Three leaves of three leaf abnormity spinneret orifices of spinning process spinnerets are mutually 120 degree of angles, and the long ratio wide with leaf of leaf is 2 ~ 5:1.
3. a kind of superbright light three leaf abnormity FDY fiber according to claim 1, it is characterized in that, the percentage by weight that described amino ethylene glycol fatty acid accounts for described superbright light three leaf abnormity FDY fiber is 0.5 ~ 2.5%.
4. the preparation method of a kind of superbright light three leaf abnormity FDY fiber as claimed in claim 1, to it is characterized in that modified poly ester through metering, extrude (three leaves abnormity spinneret orifices extrude), cool, oil, stretch, heat setting and winding, obtained superbright light three leaf abnormity FDY fiber;
The described temperature extruded is 280 ~ 290 DEG C;
The wind-warm syndrome of described cooling is 20 ~ 25 DEG C;
The speed of described winding is 4000 ~ 4200m/min;
Filament number is 0.3 ~ 1.0dtex;
The preparation process of described modified poly ester comprises:
(1) preparation of amino ethylene glycol fatty acid:
1) add in reactor by binary of fatty acids and methyl alcohol with the amount of 1:1.5 mol ratio, under the catalysis of the concentrated sulfuric acid, be heated to 80 ~ 110 DEG C, refuxing esterification, cooling, separating-purifying obtains binary of fatty acids mono-methyl; Described binary of fatty acids is that dodecanedicarboxylic acid is to the one in dopentacontane dicarboxylic acids;
2) by described binary of fatty acids mono-methyl, lead tetraacetate and lithium bromide in molar ratio 1:1:1 be dissolved in benzene, wherein the concentration of binary of fatty acids mono-methyl is 0.05 ~ 0.1mol/L, under nitrogen atmosphere, 80 ~ 90 DEG C of reactions, backflow, when no longer including gas and producing, adds a certain amount of dilute sulfuric acid reaction 2 ~ 3 hours, then wash, purify and drying, obtain product bromo aliphatic acid;
3) by the ammoniacal liquor of bromo aliphatic acid and 15 ~ 25wt% in molar ratio 1:2 join in reactor, stir, at room temperature react, then product is added thermal distillation, and absorb ammonia with cold water, the temperature adding thermal distillation is no more than 70 DEG C, until bubble-free produces, namely stop distillation, then carry out cooling and suction filtration, filter cake deionized water is washed till without till bromide ion, product vacuumize is obtained the amino aliphatic acid of product;
4) by ethylene glycol and amino aliphatic acid in molar ratio for 1.1:2 stirs, and add by 1 ~ 3% of amino fatty acid wt the sulfuric acid that concentration is 40 ~ 50wt%, carry out esterification, esterification reaction temperature is 160 ~ 220 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal; Product obtains amino ethylene glycol fatty acid through separating-purifying;
(2) preparation of modified poly ester, comprises esterification and polycondensation reaction:
Described esterification:
Adopt terephthalic acid (TPA) and ethylene glycol as raw material, carry out esterification after being made into uniform sizing material, obtain esterification products; Esterification is pressurizeed in nitrogen atmosphere, and Stress control is at normal pressure ~ 0.3MPa, and temperature is at 250 ~ 260 DEG C, and esterification water quantity of distillate reaches more than 90% of theoretical value for esterification terminal;
Described polycondensation reaction:
Comprise polycondensation reaction low vacuum stage and polycondensation reaction high vacuum stage of Fig:
The described polycondensation reaction low vacuum stage, in esterification products, add catalyst and stabilizing agent, under the condition of negative pressure, start polycondensation reaction, this staged pressure is steadily evacuated to below absolute pressure 500Pa by normal pressure, temperature controls at 260 ~ 270 DEG C, and the reaction time is 30 ~ 50 minutes;
After the described polycondensation reaction low vacuum stage terminates, add amino ethylene glycol fatty acid, and stir;
Described polycondensation reaction high vacuum stage of Fig, after the described polycondensation reaction low vacuum stage, continues to vacuumize, and makes reaction pressure be down to absolute pressure and is less than 100Pa, and reaction temperature controls at 275 ~ 280 DEG C, 50 ~ 90 minutes reaction time;
Obtained modified poly ester.
5. the preparation method of a kind of superbright light three leaf abnormity FDY fiber according to claim 4, it is characterized in that, the mol ratio of described ethylene glycol and described terephthalic acid (TPA) is 1.2 ~ 2.0:1.
6. the preparation method of a kind of superbright light three leaf abnormity FDY fiber according to claim 4, it is characterized in that, described catalyst is selected from the one in antimonous oxide, antimony glycol and antimony acetate, and catalyst amount is 0.01% ~ 0.05% of described terephthalic acid (TPA) weight.
7. the preparation method of a kind of superbright light three leaf abnormity FDY fiber according to claim 4, it is characterized in that, described stabilizing agent is selected from the one in triphenyl phosphate, trimethyl phosphate and Trimethyl phosphite, and stabilizing agent dosage is 0.01% ~ 0.05% of described terephthalic acid (TPA) weight.
8. the preparation method of a kind of superbright light three leaf abnormity FDY fiber according to claim 4, it is characterized in that, add the stirring after amino ethylene glycol fatty acid, the time is 15 ~ 20 minutes.
9. the preparation method of a kind of superbright light three leaf abnormity FDY fiber according to claim 4, is characterized in that, being washed till without adopting liquor argenti nitratis ophthalmicus to detect till bromide ion with deionized water.
10. the preparation method of a kind of superbright light three leaf abnormity FDY fiber according to claim 4, it is characterized in that, the described concentrated sulfuric acid refers to that mass concentration is the sulfuric acid of 70 ~ 80%, and concentrated sulfuric acid addition is 1 ~ 3wt% of binary of fatty acids; Described a certain amount of dilute sulfuric acid refers to that mass concentration is the sulfuric acid of 40 ~ 50%, and dilute sulfuric acid addition is 1 ~ 3wt% of binary of fatty acids mono-methyl.
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