CN106337213A - Method for preparing easily crystallized polyester fiber - Google Patents
Method for preparing easily crystallized polyester fiber Download PDFInfo
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- CN106337213A CN106337213A CN201610799693.4A CN201610799693A CN106337213A CN 106337213 A CN106337213 A CN 106337213A CN 201610799693 A CN201610799693 A CN 201610799693A CN 106337213 A CN106337213 A CN 106337213A
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- polyester fiber
- ethylene glycol
- mass fraction
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Abstract
The invention relates to a method for preparing easily crystallized polyester fiber. The method comprises the following steps: 1) mixing nano-grade organic montmorillonite, organic calcium carbonate crystal whisker, p-hydroxybenzoic acid, sodium germinate, laurylamine, ethylene glycol, propylene glycol and butanediol so as to obtain a composite multifunctional alcohol solution; 2) mixing polyethylene glycol, ethylene glycol antimony, a protonation agent phosphoric acid, ethanol amine, a fluorescent whitening agent, magnesium borate crystal whisker and propylene glycol so as to obtain a composite crystallization accelerant solution; 3) performing copolycondensation on the composite multifunctional alcohol solution, the composite crystallization accelerant solution, terephthalic acid and ethylene glycol so as to obtain modified polyester which is bright and easy to crystallize, and performing melt spinning, thereby obtaining the easily crystallized polyester fiber. The easily crystallized polyester fiber can be applied to the fields such as garments, security marks and anti-fake articles. By adopting the method, the problems that materials cannot be uniformly dispersed in the polymerization process of a conventional modification additives, the side effect can be increased, and spinning breakage can be caused can be solved, the prepared fiber is good in gloss and easy to crystallize, and the product quality can be improved.
Description
Technical field
The present invention relates to a kind of manufacture method of easy crystalline polyester fiber, belong to textile fabric manufacturing technology field.
Background technology
Polyethylene terephthalate is made up through polycondensation of p-phthalic acid (pta) and ethylene glycol (eg), English
Literary composition abbreviation pet.Polyester has higher melt temperature (tm) and a glass transition temperature (tg), and has excellent comprehensive
Can, it is widely used in the fields such as synthetic fibers, bottle piece, thin film and engineering plastics.The production technology of current pet normal polyester is
Through highly developed, how pet is modified, gives its new characteristic, widen its application, the always heat of researcher research and development
Point.
In pet process of polyester synthesizing, yellowing b value is the important internal control index of product one, and control is improper to be led to cut into slices
Color and luster jaundice, obfuscation, the glossiness of road product after impact.Various secondary anti-due to inevitably existing in process of polyester synthesizing
Should, product non-fully white will be led to, but slightly light yellow, in order to increase the glossiness of product, improving product class, mesh
Front mostly fabric colour brightness is improved by the method adding highlighted polyester master particle or fabric impregnated, its products application
Primary limitation is in fiber and film applications, but said method all exists, and mixing is uneven, it is scarce to colour uneven, uneconomical environmental protection etc.
Point.And pet polyester is because phenyl ring space steric effect, crystalline rate is very slow, is difficult to crystallize, limits under the conditions of natural cooling
Product, in the application in engineering material field, is therefore studied a kind of modified poly ester of light easily crystallization, is expanded pet application, carry
Rise class and the market competitiveness of product, there is significant economic benefit.
Organic grade of montmorillonite of nanometer, has higher surface energy and good dispersibility, high polymer has very strong affinity, energy
Promote crystallization, improve the strength and elongation of material.Antimony glycol is to be applied to a kind of polyester polycondensation reaction catalyst the most novel, it
Compared with the catalytic antimony trioxide and antimony acetate, have the advantage that 1. in ethylene glycol solution dissolubility big, dispersibility
Good；2. antimony content is high, and activity is good, can improve plant capacity；3. this catalyst itself will not bring new impurity into, can make section
Improve inherent quality, after improvement, process spinnability.1st, ammediol (pdo) is spiral by increasing polyester molecule chain methylene
Arrangement mode, reduces lattice bulk density, makes material possess more preferable transparency, thermostability and processability, and 1,4- butanediol
(bdo) crystalline rate can be lifted, improve crystal property.Peg can reduce the Diffusion Activation Energy of pet, ptt, pbt segment, promotes
Strand from melt opposite crystalline growth interfacial migration, promote segment to nucleating surface diffusion motion go forward side by side professional etiquette entire row row, from
And play the effect accelerating copolymer crystalline rate.Pass through to introduce nano-montmorillonite in process of polyester synthesizing for this,
Fluorescent whitening agent, 1, ammediol (pdo), 1, the additive such as 4- butanediol (bdo), pet polyester is modified, and adds
Crystallization promoter Polyethylene Glycol (peg, molecular weight 15000), so as to possess fluorescent brightening effect simultaneously, improves its crystalline rate,
Improve processing characteristics.
Whisker is with the diameter very little (0.1～10um) of single crystal form growth, atomic arrangement high-sequential, intensity
Close to the theoretical value of perfect crystal, have a kind of fibrous material of certain draw ratio (5-1000), have intensity high, heat-resisting, fire-retardant,
Antibacterial, conduction, inhale the function such as ripple, because its length be macromolecular material macromolecular chain length several times is to tens times, in macromolecule
Add a small amount of whisker in material, just can play enhancing, toughness reinforcing effect, also can improve material thermal resistance.Whisker is a kind of preferable
Polymer modification agent, have a wide range of applications field.
Retrieved by domestic literature, report in the prior art in spinning process, using co-blended spinning technology physicses
Add the methods such as fluorescent agent, thus obtaining the polyester fiber with fluorescent reflection function.As patent of invention, " false proof use function is fine
Dimension " (cn101578400b) describes and for pigment or dyestuff to be mixed into the method carrying out spinning in resin；Patent of invention " polymer
Fluorescence additive is added by base fluorescent functional composite and its method for melt processing " (cn102690438a) using blend method
The melt pelletization in polymer.The method of above patent has a drawback in that melt blending adds fluorescent agent and can make polymer
Viscosity degradation, does not add the material improving polyester mobility and reinforcing fiber yet, causes spinnability decline, fibre in spinning process
Dimension intensity is impaired.It is applied to label mark at present, the material with fluorescent reflection function in the field such as false proof is usually by fluorescence
Pigment or dyestuff are coated on material surface and manufacture.The shortcoming of the method is that fluorescent reflection material is easy to fall off, poor durability.
Content of the invention
It is an object of the invention to overcoming the shortcomings of that prior art exists, and provide a kind of manufacture of easy crystalline polyester fiber
Method.
The manufacture method of a kind of easy crystalline polyester fiber that the present invention provides, it adopts following steps:
A) by mass fraction, 1-2 part is organised nano imvite, a diameter of 0.5-3um of 1-2 part characterization parameter, length are
The calcium carbonate crystal whisker that organises of 5-20um, 1-2 part c.i. fluorescent whitening agent 199 fine powder, 65-75 part ethylene glycol, 5-8 part 1,3- third
Glycol, 5-8 part BDO, 3-5 part molecular weight is 15000 Polyethylene Glycol peg, 4-6 part P-hydroxybenzoic acid, 0.1-
The mixing of 0.3 part of sodium germanate, mixed solution, in the airtight griding reaction 2-4 hour of 70 DEG C of agitating ball mills, obtains a kind of light and easily ties
Brilliant compound alcoholic solution, 70 DEG C of heat preservation for standby use；
B) press mass fraction by organic for 1-2 part white mica powder, 1-2 part titanium dioxide brightening agent, 8-10 part molecular weight is
15000 Polyethylene Glycol peg, 8-10 part 1,3-PD, 0.2-0.5 part irgasfos 168,0.2-0.4 part antimony glycol, 0.1-
0.3 part of protonating agent phosphoric acid mixing, airtight agitating ball mill griding reaction 1-2 hour under the conditions of 70 DEG C, obtain a kind of easily knot
Brilliant compound accelerant, heat preservation for standby use when 70 DEG C of vacuum dehydration to water content are less than 1%；
C) press mass fraction to prepare step a) 2-4 part light easily crystallize compound alcoholic solution and mix with 6-8 part ethylene glycol,
Carry out proportioning with 15-18 part terephthalic acid component again, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is less than
It is added to polyplant when 1%, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-contracting
In the poly- stage, be continuously added to 1-2 part and prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C react 50 minutes, so
Evacuation afterwards, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, a kind of light is obtained easily crystalline modified poly-
Ester；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin quality
The ratio ratio of 25-50:75-50, composite spinning is obtained the light easily crystalline polyester fiber of skin-core structure；
Or e) prepared with step c) light easily crystalline polyester as raw material, made using melt spinning technology one-component spinning
Light easily crystalline polyester fiber.
The manufacture method of a kind of easy crystalline polyester fiber that the present invention provides, it adopts following steps:
A) press mass fraction, by 1.5 parts of nano imvites that organise, a diameter of 1.75um of 1.5 parts of characterization parameters, length are
The calcium carbonate crystal whisker that organises of 17.5um, 1.5 parts of c.i. fluorescent whitening agent 199 fine powders, 70 parts of ethylene glycol, 6 parts of 1,3-PDs,
6 parts of BDOs, 4 parts of molecular weight are 15000 Polyethylene Glycol peg, 5 parts of P-hydroxybenzoic acid, 0.2 part of sodium germanate mixing,
Mixed solution, in 70 DEG C of airtight griding reactions of agitating ball mill 3 hours, obtains a kind of light and easily crystallizes compound alcoholic solution, 70 DEG C of guarantors
Temperature is stand-by；
B) press mass fraction, by 1.5 parts of organic white mica powders, 1.5 parts of titanium dioxide brightening agents, 9 parts of molecular weight are 15000
Polyethylene Glycol peg, 9 parts of 1,3-PDs, 0.3 part of irgasfos 168,0.3 part of antimony glycol, 0.2 part of protonating agent phosphoric acid mixes
Close, airtight agitating ball mill griding reaction 1.5 hours under the conditions of 70 DEG C, obtain a kind of easily crystallization compound accelerant, 70 DEG C true
Sky be dehydrated to water content be less than 1% when heat preservation for standby use；
C) press mass fraction, be prepared by step a) 3 parts of lights easily crystallize compound alcoholic solution and mix with 7 parts of ethylene glycol, then
Carry out proportioning with 16 parts of terephthalic acid component, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is less than 1%
It is added to polyplant, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-polycondensation rank
Section, be continuously added to 1.5 parts and prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C react 50 minutes, then take out
Vacuum, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, and a kind of light easily crystalline modified polyester is obtained；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin quality
The ratio ratio of 37.5:62.5, composite spinning is obtained the light easily crystalline polyester fiber of skin-core structure；
Or e) prepared with step c) light easily crystalline polyester as raw material, made using melt spinning technology one-component spinning
Light easily crystalline polyester fiber.
Compared with prior art, the beneficial effects are mainly as follows: by configure cover containing organic grade of nanometer de-
Soil, the composite multifunction alcohol of sodium germanate and lauryl amine and contain c.i. fluorescent whitening agent 199 fine powder, white mica powder, protonating agent
The compound Polyethylene glycol crystal accelerator of phosphoric acid, ethanolamine and magnesium borate crystal whisker, participates in copolycondensation, solves modified component direct
Add, in polyester product, easily disperse the problem of inequality, while ensureing product quality, give product unique gloss, reach
To the effect brightening blast, and the interpolation due to modified component, increase compliance and the motor capacity of strand, give product
Easily crystallize, the easily characteristic of sizing, improve product quality, using the characteristic of its light, easily crystallization, make fiber possess the light of uniqueness
Damp effect and fluorescent reflection function；The addition of whisker, serves activeness and quietness, improves the effect of polyester mobility.Fluorescent agent, increasing
Strong agent and crystallization promoter adopt special process to prepare, and have good dispersibility in polyester fondant, overcome conventional modification
The problems such as inequality, side reaction increase, spinning fracture of wire is disperseed after adding in additive polymerization process.
Specific embodiment
Below embodiments of the invention are further described.Following examples are only carried out furtherly to the application
Bright, should not be construed as the restriction to the application.
A kind of manufacture method of easy crystalline polyester fiber of the present invention, using following steps:
A) press mass fraction, 1-2 part is organised nano imvite, a diameter of 0.5-3um of 1-2 part characterization parameter, length
The calcium carbonate crystal whisker that organises for 5-20um, 1-2 part c.i. fluorescent whitening agent 199 fine powder, 65-75 part ethylene glycol, 5-8 part 1,3-
Propylene glycol, 5-8 part BDO, 3-5 part molecular weight is 15000 Polyethylene Glycol peg, 4-6 part P-hydroxybenzoic acid, 0.1-
The mixing of 0.3 part of sodium germanate, mixed solution, in the airtight griding reaction 2-4 hour of 70 DEG C of agitating ball mills, obtains a kind of light and easily ties
Brilliant compound alcoholic solution, 70 DEG C of heat preservation for standby use；
B) press mass fraction, by organic for 1-2 part white mica powder, 1-2 part titanium dioxide brightening agent, 8-10 part molecular weight is
15000 Polyethylene Glycol peg, 8-10 part 1,3-PD, 0.2-0.5 part irgasfos 168,0.2-0.4 part antimony glycol, 0.1-
0.3 part of protonating agent phosphoric acid mixing, airtight agitating ball mill griding reaction 1-2 hour under the conditions of 70 DEG C, obtain a kind of easily knot
Brilliant compound accelerant, heat preservation for standby use when 70 DEG C of vacuum dehydration to water content are less than 1%；
C) press mass fraction, be prepared by step a) 2-4 part light easily crystallize compound alcoholic solution and mix with 6-8 part ethylene glycol
Close, then carry out proportioning with 15-18 part terephthalic acid component, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is little
Be added to polyplant when 1%, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, normal pressure esterification-
Polycondensation phase, is continuously added to 1-2 part and is prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C react 50 minutes,
Then evacuation, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, a kind of light is obtained easily crystalline modified poly-
Ester；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin quality
The ratio ratio of 25-50:75-50, composite spinning is obtained the light easily crystalline polyester fiber of skin-core structure；
Or e) prepared with step c) light easily crystalline polyester as raw material, made using melt spinning technology one-component spinning
Light easily crystalline polyester fiber.
Embodiment 1: a kind of manufacture method of easy crystalline polyester fiber, using following steps:
A) press mass fraction, by 1 part of nano imvite that organises, a diameter of 0.5um of 1 part of characterization parameter, length are 5um's
Organise calcium carbonate crystal whisker, 1 part of c.i. fluorescent whitening agent 199 fine powder, 65 parts of ethylene glycol, 5 parts of 1,3-PDs, 5 parts of Isosorbide-5-Nitrae-fourths
Glycol, 3 parts of molecular weight are 15000 Polyethylene Glycol peg, 4 parts of P-hydroxybenzoic acid, 0.1 part of sodium germanate mixing, and mixed solution exists
70 DEG C of airtight griding reactions of agitating ball mill 2 hours, obtain a kind of light and easily crystallize compound alcoholic solution, 70 DEG C of heat preservation for standby use；
B) press mass fraction, by 1 part of organic white mica powder, 1 part of titanium dioxide brightening agent, 8 parts of molecular weight be 15000 poly-
Ethylene glycol peg, 8 parts of 1,3-PDs, 0.2 part of irgasfos 168,0.2 part of antimony glycol, 0.1 part of protonating agent phosphoric acid mixing,
Airtight agitating ball mill griding reaction 1 hour under the conditions of 70 DEG C, obtains a kind of easily crystallization compound accelerant, 70 DEG C of vacuum dehydrations are extremely
Heat preservation for standby use when water content is less than 1%；
C) press mass fraction, be prepared by step a) 4 parts of lights easily crystallize compound alcoholic solution and mix with 6 parts of ethylene glycol, then
Carry out proportioning with 15 parts of terephthalic acid component, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is less than 1%
It is added to polyplant, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-polycondensation rank
Section, is continuously added to 1 part and is prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C and react 50 minutes, then take out true
Sky, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, after the technological requirement of processing after meeting to melt viscosity
Discharging, is obtained a kind of easily crystalline modified polyester of light；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin quality
Ratio composite spinning than 50:50, the light easily crystalline polyester melt as cortex is divided with the conventional polyester melt as sandwich layer
After respective metering pump-metered, do not enter manifold, then through core-skin composite spining module, core-skin knot after cooling, winding, is obtained
The light of structure easily crystalline polyester fiber；The present embodiment spinning technology parameter: 238dtex/48f fiber dimensious, 286 DEG C of spinning temperature
Degree, 2750m/min poy winding speed, 21.5 DEG C of ring blowing temperature, 45pa ring blow pressure, 80% ring blowing humidity.
Embodiment 2: a kind of manufacture method of easy crystalline polyester fiber, using following steps:
A) press mass fraction, by 1.5 parts of nano imvites that organise, a diameter of 1.75um of 1.5 parts of characterization parameters, length are
The calcium carbonate crystal whisker that organises of 17.5um, 1.5 parts of c.i. fluorescent whitening agent 199 fine powders, 70 parts of ethylene glycol, 6 parts of 1,3-PDs,
6 parts of BDOs, 4 parts of molecular weight are 15000 Polyethylene Glycol peg, 5 parts of P-hydroxybenzoic acid, 0.2 part of sodium germanate mixing,
Mixed solution, in 70 DEG C of airtight griding reactions of agitating ball mill 3 hours, obtains a kind of light and easily crystallizes compound alcoholic solution, 70 DEG C of guarantors
Temperature is stand-by；
B) press mass fraction, by 1.5 parts of organic white mica powders, 1.5 parts of titanium dioxide brightening agents, 9 parts of molecular weight are 15000
Polyethylene Glycol peg, 9 parts of 1,3-PDs, 0.3 part of irgasfos 168,0.3 part of antimony glycol, 0.2 part of protonating agent phosphoric acid mixes
Close, airtight agitating ball mill griding reaction 1.5 hours under the conditions of 70 DEG C, obtain a kind of easily crystallization compound accelerant, 70 DEG C true
Sky be dehydrated to water content be less than 1% when heat preservation for standby use；
C) press mass fraction, be prepared by step a) 3 parts of lights easily crystallize compound alcoholic solution and mix with 7 parts of ethylene glycol, then
Carry out proportioning with 16 parts of terephthalic acid component, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is less than 1%
It is added to polyplant, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-polycondensation rank
Section, be continuously added to 1.5 parts and prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C react 50 minutes, then take out
Vacuum, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, the technological requirement of processing after meeting to melt viscosity
Discharging afterwards, is obtained a kind of easily crystalline modified polyester of light；
D) with step c prepare) the easily crystalline modified polyester of light as raw material, one-component melt is defeated through pipeline by polycondensation vessel
Send, easy crystalline polyester fiber is made in spinning after dosing pump, filament spinning component, cooling, winding；The present embodiment spinning technology parameter:
275dtex/48f fiber dimensious, 286 DEG C of spinning temperatures, 4750m/min fdy winding speed, 3.2 draw ratios, 21 DEG C side-blown
The side-blown wind velocity of air temperature, 0.65m/min, 80% cross air blasting humidity.
Embodiment 3: a kind of manufacture method of easy crystalline polyester fiber, using following steps:
A) press mass fraction, by 2 parts of nano imvites that organise, a diameter of 3um of 2 parts of characterization parameters, length are 20um's
Organise calcium carbonate crystal whisker, 2 parts of c.i. fluorescent whitening agent 199 fine powders, 75 parts of ethylene glycol, 8 parts of 1,3-PDs, 8 parts of Isosorbide-5-Nitrae-fourths
Glycol, 5 parts of molecular weight are 15000 Polyethylene Glycol peg, 6 parts of P-hydroxybenzoic acid, 0.3 part of sodium germanate mixing, and mixed solution exists
70 DEG C of airtight griding reactions of agitating ball mill 4 hours, obtain a kind of light and easily crystallize compound alcoholic solution, 70 DEG C of heat preservation for standby use；
B) press mass fraction, by 2 parts of organic white mica powders, 2 parts of titanium dioxide brightening agents, 10 parts of molecular weight are 15000
Polyethylene Glycol peg, 8 parts of 1,3-PDs, 0.5 part of irgasfos 168,0.4 part of antimony glycol, 0.3 part of protonating agent phosphoric acid mixing,
Airtight agitating ball mill griding reaction 2 hours under the conditions of 70 DEG C, obtain a kind of easily crystallization compound accelerant, 70 DEG C of vacuum dehydrations
To water content be less than 1% when heat preservation for standby use；
C) press mass fraction, be prepared by step a) 2 parts of lights easily crystallize compound alcoholic solution and mix with 8 parts of ethylene glycol, then
Carry out proportioning with 17 parts of terephthalic acid component, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is less than 1%
It is added to polyplant, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-polycondensation rank
Section, is continuously added to 2 parts and is prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C and react 50 minutes, then take out true
Sky, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, after the technological requirement of processing after meeting to melt viscosity
Discharging, is obtained a kind of easily crystalline modified polyester of light；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin quality
Ratio composite spinning than 30:70, the light easily crystalline polyester melt as cortex is divided with the conventional polyester melt as sandwich layer
After respective metering pump-metered, do not enter manifold, then through core-skin composite spining module, core-skin knot after cooling, winding, is obtained
The light of structure easily crystalline polyester fiber；The present embodiment spinning technology parameter: 238dtex/48f fiber dimensious, 286 DEG C of spinning temperature
Degree, 2700m/min poy winding speed, 21.5 DEG C of ring blowing temperature, 45pa ring blow pressure, 80% ring blowing humidity.
Embodiment of the present invention is not limited to embodiment described above, by aforementioned disclosed numerical range, just
Arbitrarily replaced in specific embodiment, such that it is able to obtain numerous embodiment, this is not enumerated.
Claims (2)
1. a kind of manufacture method of easy crystalline polyester fiber is it is characterised in that this manufacture method adopts following steps:
A) press mass fraction, 1-2 part is organised nano imvite, a diameter of 0.5-3um of 1-2 part characterization parameter, length are 5-
The calcium carbonate crystal whisker that organises of 20um, 1-2 part c.i. fluorescent whitening agent 199 fine powder, 65-75 part ethylene glycol, 5-8 part 1,3- the third two
Alcohol, 5-8 part BDO, 3-5 part molecular weight is 15000 Polyethylene Glycol peg, 4-6 part P-hydroxybenzoic acid, 0.1-0.3
The mixing of part sodium germanate, mixed solution in the airtight griding reaction 2-4 hour of 70 DEG C of agitating ball mills, obtain a kind of light easily crystallize multiple
Close alcoholic solution, 70 DEG C of heat preservation for standby use；
B) press mass fraction, by organic for 1-2 part white mica powder, 1-2 part titanium dioxide brightening agent, 8-10 part molecular weight is 15000
Polyethylene Glycol peg, 8-10 part 1,3-PD, 0.2-0.5 part irgasfos 168,0.2-0.4 part antimony glycol, 0.1-0.3 part
Protonating agent phosphoric acid mixes, airtight agitating ball mill griding reaction 1-2 hour under the conditions of 70 DEG C, obtains a kind of easily crystallization and is combined
Accelerator, heat preservation for standby use when 70 DEG C of vacuum dehydration to water content are less than 1%；
C) press mass fraction, be prepared by step a) 2-4 part light easily crystallize compound alcoholic solution and mix with 6-8 part ethylene glycol, then
Carry out proportioning with 15-18 part terephthalic acid component, and making beating is blended, be heated to 70 DEG C of vacuum dehydrations, when water content is less than 1%
When be added to polyplant, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-polycondensation rank
Section, be continuously added to 1-2 part and prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C react 50 minutes, then take out
Vacuum, carries out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, and a kind of light easily crystalline modified polyester is obtained；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin mass ratio 25-
The ratio of 50:75-50, composite spinning is obtained the light easily crystalline polyester fiber of skin-core structure；
Or e) prepared with step c) light easily crystalline polyester as raw material, light is made using melt spinning technology one-component spinning
Easily crystalline polyester fiber.
2. a kind of manufacture method of easy crystalline polyester fiber is it is characterised in that this manufacture method adopts following steps:
A) press mass fraction, by 1.5 parts of nano imvites that organise, a diameter of 1.75um of 1.5 parts of characterization parameters, length are
The calcium carbonate crystal whisker that organises of 17.5um, 1.5 parts of c.i. fluorescent whitening agent 199 fine powders, 70 parts of ethylene glycol, 6 parts of 1,3-PDs,
6 parts of BDOs, 4 parts of molecular weight are 15000 Polyethylene Glycol peg, 5 parts of P-hydroxybenzoic acid, 0.2 part of sodium germanate mixing,
Mixed solution, in 70 DEG C of airtight griding reactions of agitating ball mill 3 hours, obtains a kind of light and easily crystallizes compound alcoholic solution, 70 DEG C of guarantors
Temperature is stand-by；
B) press mass fraction, by 1.5 parts of organic white mica powders, 1.5 parts of titanium dioxide brightening agents, 9 parts of molecular weight be 15000 poly-
Ethylene glycol peg, 9 parts of 1,3-PDs, 0.3 part of irgasfos 168,0.3 part of antimony glycol, 0.2 part of protonating agent phosphoric acid mixing,
Airtight agitating ball mill griding reaction 1.5 hours under the conditions of 70 DEG C, obtain a kind of easily crystallization compound accelerant, 70 DEG C of vacuum dehydrations
To water content be less than 1% when heat preservation for standby use；
C) press mass fraction, be prepared by step a) 3 parts of lights easily crystallize compound alcoholic solution and mix with 7 parts of ethylene glycol, then with 16
Part terephthalic acid component carries out proportioning, and making beating is blended, and is heated to 70 DEG C of vacuum dehydrations, adds when water content is less than 1%
To polyplant, in 250 DEG C of temperature, carry out esterification under pressure 0.15mpa 2 hours, in normal pressure esterification-polycondensation phase, even
Continuous add 1.5 parts and prepared by step b) easy crystallization compound accelerant, and be warming up to 270 DEG C and react 50 minutes, then evacuation,
Carry out polycondensation reaction below 283 DEG C of temperature, absolute pressure 100pa, a kind of light easily crystalline modified polyester is obtained；
D) with step c prepare) the easily crystalline modified polyester of light as cortex, with conventional polyester as sandwich layer, by core-skin mass ratio
The ratio of 37.5:62.5, composite spinning is obtained the light easily crystalline polyester fiber of skin-core structure；
Or e) prepared with step c) light easily crystalline polyester as raw material, light is made using melt spinning technology one-component spinning
Easily crystalline polyester fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799693.4A CN106337213A (en) | 2016-08-31 | 2016-08-31 | Method for preparing easily crystallized polyester fiber |
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