CN108505128A - A kind of coloured recycled polyester DTY preparation methods - Google Patents
A kind of coloured recycled polyester DTY preparation methods Download PDFInfo
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- CN108505128A CN108505128A CN201810144222.9A CN201810144222A CN108505128A CN 108505128 A CN108505128 A CN 108505128A CN 201810144222 A CN201810144222 A CN 201810144222A CN 108505128 A CN108505128 A CN 108505128A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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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
- 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
- D01F1/06—Dyes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
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Abstract
The present invention relates to a kind of coloured recycled polyester DTY preparation methods, (1) crushes waste and old polyester to obtain waste and old polyester fragment；(2) method for using the color matching of RGB ternarys carries out thick color matching to waste and old polyester fragment and obtains product I；(3) product I is added in the alcohol liquid containing catalyst and carries out degradation generation monomer and/or oligomer；(4) polymerisation generation polymer melt is carried out after carrying out separating-purifying to monomer and/or oligomer；(5) method for using the color matching of RGB ternarys carries out thin color matching to polymer melt and obtains product II；(6) product II carries out spinning and coloured recycled polyester DTY fiber is made.The present invention overcomes Man-made Color Matching stability is poor in the prior art, accuracy rate is low and it is time-consuming and laborious the shortcomings of, using RGB ternary color matching methods, realized when producing coloured polyester it is on-line automatic match colorimetric compensation, improve the stability and accuracy rate of polyester color matching, application prospect is very good.
Description
Technical field
The invention belongs to coloured recycled polyester production fields, are related to a kind of coloured recycled polyester DTY preparation methods.
Background technology
Polyester synthesizes high molecular material as a kind of not degradable petroleum base, and the social reserves for discarding product are very huge
Greatly, in view of environmental protection and the various pressure of resource, the regeneration research of polyester also just increasingly becomes hot spot of people's attention.It is useless
It is invertibity using polycondensation reaction that old polyester alcoholysis polymerize again, by by waste and old polyester depolymerization to monomer or polymerization intermediate,
After separating-purifying, can again polycondensation be high-quality recycled polyester.Therefore the enclosed circulation regeneration to waste and old polyester can be realized,
For the recycling of the waste and old polyester textile of high impurity content, using having overwhelming superiority on alcoholysis renewal theory.
Currently, using Man-made Color Matching method in match color procedure.Technologists determine dyeing by experience
Formula.Man-made Color Matching method stability is poor, and one time accuracy rate is low, and color can be in process for time-consuming and laborious and polyester
Processing technology and change.
Therefore, studying a kind of preparation method of coloured recycled polyester that capableing of automatic on-line color matching in process has
Highly important meaning.
Invention content
When the purpose of the invention is to overcome the above-mentioned prior art to match colors recycled polyester, when Man-made Color Matching, causes
Stability is poor, the shortcomings of accuracy rate is low and time-consuming and laborious, provide one kind automatic on-line can match in polyester process
The coloured recycled polyester DTY preparation methods of color.The present invention uses the RGB principles of three primary colours, distributes color component to a 0-
Intensity value in 255 numberical ranges.Correlated digital is adjusted, deep mixed a variety of colors can be obtained, is mathematically come
Description and metering color.Before recycled polyester raw material is added to alcoholysis reaction kettle and in spinning process, pass through RGB
Color Detecting System detects the difference of recycled polyester raw material and polymer color and target product color automatically, and color is turned
RGB hexadecimal color code numerical value is turned to, the difference of color code numerical value is compared.Then data feedback is given to dyestuff charging system,
It is automatically added to the dyestuff that color code is above/below corresponding R, G, B color code numerical value, its color code difference is made to be less than defined error
Range.It is on-line automatic accurately with colorimetric compensation to realize by the color matching twice before feeding and in polymerization process.Waste and old polyester alcohol
It is the invertibity for utilizing polycondensation reaction that solution polymerize again, by by waste and old polyester depolymerization to monomer or polymerization intermediate, being carried through separation
After pure, can again polycondensation be high-quality recycled polyester.Therefore the enclosed circulation regeneration to waste and old polyester can be realized, for high miscellaneous
For the recycling of the waste and old polyester textile of matter content, using having overwhelming superiority on alcoholysis renewal theory.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of coloured recycled polyester DTY preparation methods, steps are as follows：
(1) waste and old polyester is crushed to obtain waste and old polyester fragment；
(2) method for using the color matching of RGB ternarys carries out thick color matching to waste and old polyester fragment and obtains product I, the thick color matching
Refer to the process of keeping it close with the color of target product by the way that the color of dyestuff adjustment waste and old polyester is added；
(3) product I is added in the alcohol liquid containing catalyst and carries out degradation generation monomer and/or oligomer；
(4) polymerisation generation polymer melt is carried out after carrying out separating-purifying to monomer and/or oligomer；
(5) method for using the color matching of RGB ternarys carries out thin color matching to polymer melt and obtains product II, and the thin color matching is
Refer to makes its closer process of color with target product by the way that the color of dyestuff adjustment polymer melt is added；
(6) product II through metering, extrusion, cooling, oil and wind be made coloured recycled polyester POY fibers, coloured regeneration
Polyester POY fibers are sprayed through first roller, the first hot tank, coldplate, scroll tube, the second roller, network respectively after 8h is balanced
Coloured recycled polyester DTY fiber is made after mouth, the second hot phase, third roller, oil tanker and winding.
As preferred technical solution：
A kind of coloured recycled polyester DTY preparation methods as described above, the color of the coloured recycled polyester DTY fiber
Poor grade is 4~5 grades.
A kind of coloured recycled polyester DTY preparation methods as described above, it is described it is thick match colors be in drawing-in device into
Capable, the thin color matching carries out in polymeric kettle；RGB color biography is installed simultaneously in the drawing-in device and polymeric kettle
Sensing system and automatic dyestuff charging system, may be implemented on-line checking coloured product, and with target product color contrast, by color
Then difference gives data feedback to dyestuff charging system, to realize Automatic color matching compared with color bits database.
A kind of coloured recycled polyester DTY preparation methods as described above, the RGB color sensor-based system includes color
Sensor, lighting source, signal processing circuit and microcontroller；The color sensor is made up of three bases of object color measurement
The reflection ratio of color realizes that color detection, the lighting source form lighting system with white light-emitting diode.
A kind of coloured recycled polyester DTY preparation methods as described above, the automatic dyestuff charging system include anti-
Feedback signal processor, RGB dye colours identifier, dyestuff hopper, dyestuff weigher and dyestuff drawing-in device.
A kind of coloured recycled polyester DTY preparation methods as described above, the thick color matching or the process carefully matched colors are：
First, under the irradiation of lighting source, color sensor incudes the signal of the color generation of testee through signal
Microcontroller processing is sent to after processing circuit amplification, signal is sent to color bits database to microcontroller by treated, lighting source
45 ° of (illumination)/0 ° (measurement) annular illumination systems are circularized with white light-emitting diode group；
Then, color bits database converts the signal to RGB hexadecimals color code and the RGB hexadecimals with target product
Color code is compared, when the RGB hexadecimal colors of more than one numerical value in R, G, B hexadecimal color code and target product
When the error of code is greater than the set value, microcontroller receives the signal post-processing that color sensor generates and amplifies through signal processing circuit
Value of chromatism is obtained, aberration value signal is sent to feedback signal processor processing, feedback signal processor passes through RGB dye colours
Identifier identifying dye color and aberration value signal is sent to dyestuff weigher and the dyestuff hopper of corresponding color by treated,
Dyestuff hopper is fed into dyestuff weigher until weight reaches desired value, and dyestuff is added dyestuff feeding and filled by dyestuff weigher
It sets；
Finally, dyestuff drawing-in device is gradually added into the dyestuff to match with required hexadecimal color code, is passed by color
The identification repeatedly and processing of sensor and microcontroller are until error is less than or equal to setting value；
The color bits database is made of 16777216 kinds of colors that RGB hexadecimals color code can indicate.
A kind of coloured recycled polyester DTY preparation methods as described above, setting value when the thick color matching is 20, institute
It is 5 to state setting value when thin color matching.
A kind of coloured recycled polyester DTY preparation methods as described above, the alcohol liquid are methanol, ethylene glycol, the third two
Alcohol, 1,4- butanediols, glycerine or pentaerythrite；The catalyst be zinc acetate, manganese acetate, cobalt acetate, lead acetate, sodium carbonate,
Sodium bicarbonate, sodium sulphate, potassium sulfate, titanium phosphate or ionic liquid.
A kind of coloured recycled polyester DTY preparation methods as described above, the cation of the ionic liquid are
Wherein, R1, R2, R3, R4For the different alkyl of carbon atom number, R is alkyl；The anion of ionic liquid is PF6 -、
BF4 -、CH3SO3 -、F3CSO3 -、(F3CSO2)3C-、Br-Or Cl-, the ionic liquid for meeting above-mentioned condition is suitable for the present invention.
A kind of coloured recycled polyester DTY preparation methods as described above, the master of the coloured recycled polyester POY fibers
Want spinning technology parameter as follows：
Spinning temperature：270~290 DEG C；
Spinning speed：2000~2500m/min；
Draft temperature：60~80 DEG C；
Total draft multiplying power：1.5~4.5；
The main spinning technology parameter of the coloured recycled polyester DTY fiber is as follows：
The linear velocity of first roller：200~500m/min；
The linear velocity of second roller：400~500m/min；
The linear velocity of third roller：200~500m/min；
The linear velocity of Wound-up roller：300~600m/min；
Draw ratio：1.1~1.5；
False twisting D/Y ratios：1.2~2.5.
Advantageous effect：
A kind of coloured recycled polyester DTY preparation methods of the present invention, during matching colors to recycled polyester,
The difference that color and target product color in process are detected using RGB color detecting system, by colour-difference and color bits data
Library is compared, and then gives data feedback to dyestuff charging system, is automatically added to the dyestuff of required color and quantity, to realize
Line Automatic color matching compensates, and stability and accuracy are more excellent, overcomes and matches colors caused by Man-made Color Matching in the prior art
The shortcomings of unstable and inaccurate, great application prospect.
Description of the drawings
Fig. 1 is the schematic diagram of the coloured recycled polyester DTY preparation process of the present invention.
Specific implementation mode
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Embodiment 1
A kind of coloured recycled polyester DTY preparation methods, as shown in Figure 1, steps are as follows：
(1) foundation includes the color matching data library of recycled polyester data, dye formulation data and color bits data, recycled polyester number
According to including：Lot number, title, color, raw material types；Dye formulation data include：Reactive dye, reducing dye and disperse dyes,
Wherein, 1) reactive dye data include：Reactive dye type, padding liquor firing rate, padding liquor wetting agent dosage, fixation liquid are burnt
Base amount, fixation liquid tertiary sodium phosphate dosage, fixation liquid soda ash dosage, fixation liquid salt consumption, fixation liquid liquid measure and liquid of soaping are dense
Degree；2) reducing dye data include：Padding liquor dye dosage, padding liquor diffusant dosage, padding liquor color type, reducing solution are burnt
Base amount, reducing solution insurance dosage, reducing solution color type, oxidation solution dioxygen water consumption, soap liquid liquid soap dosage and soap
Washing lotion soda ash dosage；3) disperse dyes data include：Disperse dyes title, antishifting agent amount, infiltration dosage, sodium bicarbonate amount, urine
Plain amount, intellectual circle's amount of dye, coating content, average dosage and the total liquid measure of adhesive；Color bits data include：RGB hexadecimal color codes
The 16777216 kinds of colors that can be indicated；
(2) waste and old polyester is categorized, clean, crushing, physical separation, cleaning, drying and thick color matching obtain product I；
Wherein, thick color matching refers to adds in the drawing-in device for being equipped with RGB color sensor-based system and automatic dyestuff charging system
Entering the color of dyestuff adjustment recycled polyester fragment keeps the color of itself and target product close, wherein RGB color sensor-based system includes
Color sensor, lighting source, signal processing circuit and microcontroller, color sensor are made up of three bases of object color measurement
The reflection ratio of color realizes that color detection, lighting source form lighting system with white light-emitting diode；Automatic dyestuff charging system
System includes feedback signal processor, RGB dye colours identifier, dyestuff hopper, dyestuff weigher and dyestuff drawing-in device；
(3) product I obtains product II through depolymerization, separation, purification, polymerization and thin color matching；
Detailed process is：It is added and contains in the polymeric kettle for being equipped with RGB color sensor-based system and automatic dyestuff charging system
Degradation generation monomer is carried out in the methanol of zinc acetate and/or oligomer, monomer and/or oligomer are polymerize after separating-purifying
Polymer melt is generated, the color for the recycled polyester that finally polymer melt is added after the thick color matching of dyestuff adjustment makes itself and target
The color of product is closer；
It is specially in the process that step (2) and (3) slightly match colors or carefully match colors：
First, under the irradiation of lighting source, color sensor incudes the signal of the color generation of testee through signal
Microcontroller processing is sent to after processing circuit amplification, signal is sent to color bits database to microcontroller by treated；
Then, color bits database converts the signal to RGB hexadecimals color code and the RGB hexadecimals with target product
Color code is compared, when the RGB hexadecimal colors of more than one numerical value in R, G, B hexadecimal color code and target product
When the error of code is greater than the set value, microcontroller receives the signal post-processing that color sensor generates and amplifies through signal processing circuit
Value of chromatism is obtained, aberration value signal is sent to feedback signal processor processing, feedback signal processor passes through RGB dye colours
Identifier identifying dye color and aberration value signal is sent to dyestuff weigher and the dyestuff hopper of corresponding color by treated,
Dyestuff hopper is fed into dyestuff weigher until weight reaches desired value, and dyestuff is added dyestuff feeding and filled by dyestuff weigher
It sets；
Finally, dyestuff drawing-in device is gradually added into the dyestuff to match with required hexadecimal color code, is passed by color
The identification repeatedly and processing of sensor and microcontroller are less than or equal to setting value up to error, wherein setting value when thick color matching is 20,
Setting value when thin color matching is 5；
(4) product II through metering, extrusion, cooling, oil and wind be made coloured recycled polyester POY fibers, coloured regeneration
Polyester POY fibers are sprayed through first roller, the first hot tank, coldplate, scroll tube, the second roller, network respectively after 8h is balanced
Coloured recycled polyester DTY fiber is made after mouth, the second hot phase, third roller, oil tanker and winding；
Wherein, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 280 DEG C；Spinning speed
Degree is 2300m/min；Draft temperature is 70 DEG C；Total draft multiplying power is 3；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 350m/min；
The linear velocity of second roller is 450m/min；The linear velocity of third roller is 350m/min；The linear velocity of Wound-up roller is 450m/
min；Draw ratio is 1.3；False twisting D/Y ratios are 1.7.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4 grades.
Comparative example
A kind of coloured recycled polyester DTY preparation methods, step is substantially the same manner as Example 1, and difference is that it does not have
There is thick match color procedure, the aberration grade of the final coloured short fibre of recycled polyester obtained is 3.It is can be found that with the comparison of embodiment 1：
The match color procedure twice of the present invention can significantly improve product aberration grade, improve the larger problem of aberration.
Embodiment 2
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the ethylene glycol containing manganese acetate, and it is fine to prepare coloured recycled polyester DTY by product II
During dimension, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 270 DEG C；Spinning speed
For 2000m/min；Draft temperature is 60 DEG C；Total draft multiplying power is 1.5；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 200m/min；
The linear velocity of second roller is 400m/min；The linear velocity of third roller is 200m/min；The linear velocity of Wound-up roller is 300m/
min；Draw ratio is 1.1；False twisting D/Y ratios are 1.2.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 5 grades.
Embodiment 3
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the propylene glycol containing cobalt acetate, and it is fine to prepare coloured recycled polyester DTY by product II
During dimension, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 290 DEG C；Spinning speed
For 2500m/min；Draft temperature is 80 DEG C；Total draft multiplying power is 4.5；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 500m/min；
The linear velocity of second roller is 500m/min；The linear velocity of third roller is 500m/min；The linear velocity of Wound-up roller is 600m/
min；Draw ratio is 1.5；False twisting D/Y ratios are 2.5.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4 grades.
Embodiment 4
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the 1,4-butanediol containing lead acetate, and coloured recycled polyester is prepared by product II
During DTY fiber, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 275 DEG C；It spins
Silk speed is 2050m/min；Draft temperature is 62 DEG C；Total draft multiplying power is 1.6；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 250m/min；
The linear velocity of second roller is 410m/min；The linear velocity of third roller is 220m/min；The linear velocity of Wound-up roller is 330m/
min；Draw ratio is 1.4；False twisting D/Y ratios are 1.6.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 5 grades.
Embodiment 5
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the glycerine of containing sodium carbonate, and coloured recycled polyester DTY fiber is prepared by product II
During, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 277 DEG C；Spinning speed is
2100m/min；Draft temperature is 63 DEG C；Total draft multiplying power is 1.7；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 230m/min；
The linear velocity of second roller is 430m/min；The linear velocity of third roller is 240m/min；The linear velocity of Wound-up roller is 340m/
min；Draw ratio is 1.3；False twisting D/Y ratios are 1.5.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 5 grades.
Embodiment 6
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the pentaerythrite of sodium bicarbonate, and coloured recycled polyester DTY is prepared by product II
During fiber, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 278 DEG C；Spinning speed
Degree is 2200m/min；Draft temperature is 66 DEG C；Total draft multiplying power is 2.0；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 270m/min；
The linear velocity of second roller is 420m/min；The linear velocity of third roller is 300m/min；The linear velocity of Wound-up roller is 380m/
min；Draw ratio is 1.4；False twisting D/Y ratios are 1.8.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4.5 grades.
Embodiment 7
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the methanol of sodium sulphate, and coloured recycled polyester DTY fiber is prepared by product II
In the process, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 280 DEG C；Spinning speed is
2250m/min；Draft temperature is 68 DEG C；Total draft multiplying power is 2.2；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 260m/min；
The linear velocity of second roller is 430m/min；The linear velocity of third roller is 320m/min；The linear velocity of Wound-up roller is 400m/
min；Draw ratio is 1.3；False twisting D/Y ratios are 1.9.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4.5 grades.
Embodiment 8
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the ethylene glycol of potassium sulfate, and coloured recycled polyester DTY fiber is prepared by product II
During, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 281 DEG C；Spinning speed is
2300m/min；Draft temperature is 70 DEG C；Total draft multiplying power is 2.2；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 360m/min；
The linear velocity of second roller is 460m/min；The linear velocity of third roller is 360m/min；The linear velocity of Wound-up roller is 360m/
min；Draw ratio is 1.5；False twisting D/Y ratios are 1.8.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4.5 grades.
Embodiment 9
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the propylene glycol of titanium phosphate, and coloured recycled polyester DTY fiber is prepared by product II
During, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature is 280 DEG C；Spinning speed is
2400m/min；Draft temperature is 66 DEG C；Total draft multiplying power is 1.9；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 400m/min；
The linear velocity of second roller is 400m/min；The linear velocity of third roller is 400m/min；The linear velocity of Wound-up roller is 500m/
min；Draw ratio is 1.4；False twisting D/Y ratios are 2.1.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 5 grades.
Embodiment 10
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the propylene glycol of -3 methylimidazole salt of -1 butyl of chlorination, is had by product II preparations
During color recycled polyester DTY fiber, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning temperature
It is 283 DEG C；Spinning speed is 2400m/min；Draft temperature is 72 DEG C；Total draft multiplying power is 3.8；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 380m/min；
The linear velocity of second roller is 370m/min；The linear velocity of third roller is 390m/min；The linear velocity of Wound-up roller is 420m/
min；Draw ratio is 1.3；False twisting D/Y ratios are 2.0.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4 grades.
Embodiment 11
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the ethylene glycol of -3 methylimidazole hexafluorophosphate of 1- butyl, by product II systems
During having color recycled polyester DTY fiber, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：Spinning
Temperature is 286 DEG C；Spinning speed is 2400m/min；Draft temperature is 76 DEG C；Total draft multiplying power is 4.0；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 400m/min；
The linear velocity of second roller is 450m/min；The linear velocity of third roller is 380m/min；The linear velocity of Wound-up roller is 540m/
min；Draw ratio is 1.5；False twisting D/Y ratios are 2.3.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 5 grades.
Embodiment 12
A kind of coloured recycled polyester DTY preparation methods, step and embodiment 1 are almost the same, the difference is that thin color matching
In the process, the alcohol liquid containing catalyst being added is the pentaerythrite of -3 methyl imidazolium tetrafluoroborate of 1- butyl, by product II
During preparing coloured recycled polyester DTY fiber, the main spinning technology parameter of coloured recycled polyester POY fibers is as follows：It spins
Silk temperature is 280 DEG C；Spinning speed is 2450m/min；Draft temperature is 69 DEG C；Total draft multiplying power is 4.3；
The main spinning technology parameter of coloured recycled polyester DTY fiber is as follows：The linear velocity of first roller is 450m/min；
The linear velocity of second roller is 440m/min；The linear velocity of third roller is 300m/min；The linear velocity of Wound-up roller is 500m/
min；Draw ratio is 1.5；False twisting D/Y ratios are 2.3.
The aberration grade of final coloured recycled polyester DTY fiber obtained is 4 grades.
Claims (10)
1. a kind of coloured recycled polyester DTY preparation methods, it is characterized in that：Steps are as follows：
(1) waste and old polyester is crushed to obtain waste and old polyester fragment；
(2) method for using the color matching of RGB ternarys carries out thick color matching to waste and old polyester fragment and obtains product I, and the thick color matching refers to
The process that the color of waste and old polyester keeps it close with the color of target product is adjusted by the way that dyestuff is added；
(3) product I is added in the alcohol liquid containing catalyst and carries out degradation generation monomer and/or oligomer；
(4) polymerisation generation polymer melt is carried out after carrying out separating-purifying to monomer and/or oligomer；
(5) method for using the color matching of RGB ternarys carries out thin color matching to polymer melt and obtains product II, and the thin color matching refers to leading to
Cross the closer process of color that the color of dyestuff adjustment polymer melt makes it with target product that is added；
(6) product II through metering, extrusion, cooling, oil and wind be made coloured recycled polyester POY fibers, coloured recycled polyester
POY fibers are after 8h is balanced, respectively through first roller, the first hot tank, coldplate, scroll tube, the second roller, network nozzle,
Coloured recycled polyester DTY fiber is made after two hot phases, third roller, oil tanker and winding.
2. a kind of coloured recycled polyester DTY preparation methods according to claim 1, which is characterized in that described coloured
The aberration grade of recycled polyester DTY fiber is 4~5 grades.
3. a kind of coloured recycled polyester DTY preparation methods according to claim 1, which is characterized in that described slightly to match
Color carries out in drawing-in device, and the thin color matching carries out in polymeric kettle；In the drawing-in device and polymeric kettle
RGB color sensor-based system and automatic dyestuff charging system are installed simultaneously.
4. a kind of coloured recycled polyester DTY preparation methods according to claim 3, which is characterized in that the RGB face
Color sensor-based system includes color sensor, lighting source, signal processing circuit and microcontroller；The color sensor passes through measurement
The reflection ratio for constituting the three primary colours of object color realizes color detection, and the lighting source is formed with white light-emitting diode to be shone
Bright system.
5. a kind of coloured recycled polyester DTY preparation methods according to claim 4, which is characterized in that described automatic
Dyestuff charging system includes that feedback signal processor, RGB dye colours identifier, dyestuff hopper, dyestuff weigher and dyestuff are fed
Expect device.
6. a kind of coloured recycled polyester DTY preparation methods according to claim 5, which is characterized in that described slightly to match
Color or the process carefully matched colors are：
First, under the irradiation of lighting source, color sensor incudes the signal of the color generation of testee through signal processing
Microcontroller processing is sent to after circuit amplification, signal is sent to color bits database to microcontroller by treated；
Then, color bits database converts the signal to RGB hexadecimals color code and the RGB hexadecimal colors with target product
Code is compared, when the RGB hexadecimal color codes of more than one numerical value in R, G, B hexadecimal color code and target product
When error is greater than the set value, microcontroller receives color sensor generation and the signal post-processing amplified through signal processing circuit obtains
Aberration value signal is sent to feedback signal processor processing by value of chromatism, and feedback signal processor is identified by RGB dye colours
Device identifying dye color and aberration value signal is sent to dyestuff weigher and the dyestuff hopper of corresponding color, dyestuff by treated
Hopper is fed into dyestuff weigher until weight reaches desired value, and dyestuff drawing-in device is added in dyestuff by dyestuff weigher；
Finally, dyestuff drawing-in device is gradually added into the dyestuff to match with required hexadecimal color code, by color sensor
Identification repeatedly and processing with microcontroller is until error is less than or equal to setting value；
The color bits database is made of 16777216 kinds of colors that RGB hexadecimals color code can indicate.
7. a kind of coloured recycled polyester DTY preparation methods according to claim 6, which is characterized in that described slightly to match
Setting value when color is 20, and setting value when the thin color matching is 5.
8. a kind of coloured recycled polyester DTY preparation methods according to claim 1, which is characterized in that the alcohol liquid
For methanol, ethylene glycol, propylene glycol, 1,4- butanediols, glycerine or pentaerythrite；The catalyst is zinc acetate, manganese acetate, acetic acid
Cobalt, lead acetate, sodium carbonate, sodium bicarbonate, sodium sulphate, potassium sulfate, titanium phosphate or ionic liquid.
9. a kind of coloured recycled polyester DTY preparation methods according to claim 8, which is characterized in that the ion
The cation of liquid is
Wherein, R1, R2, R3, R4For the different alkyl of carbon atom number, R is alkyl；The anion of ionic liquid is PF6 -、BF4 -、
CH3SO3 -、F3CSO3 -、(F3CSO2)3C-、Br-Or Cl-。
10. a kind of coloured recycled polyester DTY preparation methods according to claim 1, which is characterized in that described coloured
The main spinning technology parameter of recycled polyester POY fibers is as follows：
Spinning temperature：270~290 DEG C；
Spinning speed：2000~2500m/min；
Draft temperature：60~80 DEG C；
Total draft multiplying power：1.5~4.5；
The main spinning technology parameter of the coloured recycled polyester DTY fiber is as follows：
The linear velocity of first roller：200~500m/min；
The linear velocity of second roller：400~500m/min；
The linear velocity of third roller：200~500m/min；
The linear velocity of Wound-up roller：300~600m/min；
Draw ratio：1.1~1.5；
False twisting D/Y ratios：1.2~2.5.
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| CN112126992A (en) * | 2020-07-28 | 2020-12-25 | 东华大学 | Preparation method of color gradient fiber |
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