CN110273197A - A kind of regeneration coloured silk yarn and preparation method thereof of discarded terylene textile fabric production - Google Patents
A kind of regeneration coloured silk yarn and preparation method thereof of discarded terylene textile fabric production Download PDFInfo
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- CN110273197A CN110273197A CN201910417741.2A CN201910417741A CN110273197A CN 110273197 A CN110273197 A CN 110273197A CN 201910417741 A CN201910417741 A CN 201910417741A CN 110273197 A CN110273197 A CN 110273197A
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- textile fabric
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- 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
- D01F1/04—Pigments
-
- 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
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Artificial Filaments (AREA)
Abstract
The present invention discloses a kind of regeneration coloured silk yarn and preparation method thereof of discarded terylene textile fabric production, is made of discarded terylene textile fabric, carboxylate, color masterbatch, brightening agent and chain extender.Preparation method: (1) pre-processing discarded terylene textile fabric, forms foam material；Carried out after being smelted into molten condition in foam material investment smelting furnace, melt filtration except not melting impurity, with negative pressure by melt bubble and oligomer extract out, obtain granulation semi-finished product, investment reaction kettle, which carries out solving poly- chain extension -ester exchange, meets again, and obtains granulating raw material；(2) by carboxylate and color masterbatch, brightening agent melt blending extruding pelletization, carboxylate masterbatch is obtained；(3) (1) is added to response type exhaust screw extruder extruding pelletization together with (2) product, color yarn raw material must be regenerated；(4) (3) product is subjected to melt spinning.The invention enables discarded terylene textile fabrics to recycle, and simplifies the dyeing and printing process for regenerating color yarn, avoids the generation of the environmental contaminants such as dyeing waste water, have the characteristics that energy conservation and environmental protection.
Description
Technical field
The present invention relates to regenerated environment protecting terylene coloured silk yarn and textile technology fields, and in particular to a kind of discarded terylene textile fabric
High-qualityization recycles, and produces regenerated terylene coloured silk yarn.
Background technique
With the growth of economic level and population, modern humans constantly increase textile fabric demand, and terylene is to be applied to
Processing
The highest synthetic fibers kind of yield in textile fabric significantly solves modern humans' gorgeous textile fabric bright and new to various colors
Demand.Modern humans are also faced with non-renewable resources transition utilization, the fewer and fewer problem of resource and textile fabric simultaneously
Problem of environmental pollution in process of manufacture.It is therefore rationally extremely urgent using all most valuable non-renewable goods and materials,
People need rationally to continue to apply to textile fabric industry using the discarded textile fabric reproduction textile fabric coloured silk yarn of recycling, this both improves ring
Border, and turning waste into wealth recycles for high-qualityization of resource and provides a new approach, have very high economic benefit and
Social benefit.
Chinese patent CN101643415A discloses the discoloration method of the DOTP of a kind of pair of waste and old terylene production, it is desirable to provide
A kind of method that can be decolourized to the DOTP produced with waste and old terylene, makes the colour stable of product DOTP in lurid base
On tune, it is beneficial to downstream user use.It is organic molten after decoloration although the method decoloration process method is simple, easy to accomplish
There are biggish environmental pollution hidden danger for agent waste liquid.
Chinese patent CN1721470A discloses a kind of polymer physics cycling and reutilization monofilament and preparation method thereof, list
Silk
It is made of terylene waste, waste polyester bottle chip, chain extender.Preparation method: terylene waste is crushed, then by content 30%
Crushed material double screw extruder is added together with 69% waste polyester bottle chip, 1% chain extender, squeezed out at 260 DEG C of temperature
Mixing, filtering and Cast Strip, pelletizing, dehydration under water；Melt blending is further carried out in melt extruder and is squeezed out, then is passed through
Liquid cooling, stretching, thermal finalization, winding are crossed, product is made；Spinning temperature is 285 DEG C, and liquid cooling temperature is 60 DEG C, is stretched
Multiplying power is 5.2 times, and draft temperature is 190 DEG C, and heat setting temperature is 260 DEG C；The NaCl that the cooling coolant liquid of liquid is 2% is water-soluble
Liquid.The invention recycles waste and old terylene monofilament, Waste bottle piece, the discharge such as no waste water, waste residue；But the invention institute is not illustrated
The monofilament for the polymer physics cycling and reutilization monofilament production stated is exactly regenerated terylene coloured silk yarn.
Currently, based on the fine color yarn of domestic recycled PET bottles piece preparation regrowth it has been reported that but solid based on light industry specialty industries
The useless regenerated terylene coloured silk yarn technology for preparing has not been reported and external without this technology.The present invention is mainly spun using the discarded terylene of recycling
Fabric produces regenerated terylene coloured silk yarn.Breaking strength using the fine color yarn of PET production regrowth in waste spinning fabric is not less than
2.5cN/dtex, elongation at break are not less than 20%, realize high-value-use.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is using textile spent material melting-solution to pure terylene (PET)
Poly- reunion technology is made into the color yarn of regeneration, provides a kind of regeneration coloured silk yarn and its preparation side for utilizing and discarding that terylene textile fabric produces
Method, to obtain the specialty industries Nesting Zone that the color yarn that high-qualityization recycles continues to apply to textile garment and shoemaking.
In order to achieve the object of the present invention, specific technical solution is as follows:
A kind of regeneration coloured silk yarn of discarded terylene textile fabric production, which is characterized in that be made of the raw material that following weight matches:
Discarded 80 ~ 95 parts of terylene textile fabric
2 ~ 10 parts of carboxylate
1 ~ 5 part of color masterbatch
1 ~ 5 part of brightening agent
Chain extender 1 ~ 2%.
The discarded terylene textile fabric, waste and old clothing, weaving leftover pieces, defect ware, waste silk one selected from pure polyester material
Kind is several, itself has various colors, includes senior middle school's low-viscosity different cultivars.
The carboxylate, be second alcohol and carboxylic acid reactant, the preparation method comprises the following steps: the quality proportioning of second alcohol and carboxylic acid be 1:1 ~
2, at 100 ~ 160 DEG C of reaction temperature, esterification generates the reactant of second alcohol and carboxylic acid.
The color masterbatch, selected from dark or black color masterbatch.
A kind of preparation method of the color yarn of regeneration of the above-mentioned discarded terylene textile fabric production of the present invention, includes the following steps:
(1) the discarded terylene textile fabric of the recycling of collection sorted first, be crushed, washed, be dried in vacuo, form foam material；
Secondly foam material is put into smelting furnace and filtered after being smelted into molten condition, removed inorganic impurity, obtain granulation semi-finished stock；
(2) it will be granulated in semi-finished stock investment reaction kettle again and carries out solving the polycondensation again of poly- chain extension-, obtain granulating raw material；
(3) by carboxylate and color masterbatch, brightening agent and chain extender response type exhaust screw machine extruding pelletization, carboxylate mother is obtained
Material, then screw extruder is added together with carboxylate masterbatch in granulating raw material made from step (2), it is melted at 180 ~ 240 DEG C
Blending extrusion is granulated, and must regenerate color yarn raw material；
(4) color yarn raw material will be regenerated and carry out melt spinning, spinning temperature is 260 ~ 280 DEG C, and liquid cooling temperature is 50 ~ 70 DEG C,
Stretching ratio is 3 ~ 5 times, and draft temperature is 160 ~ 180 DEG C, and heat setting temperature is 250 ~ 260 DEG C；The cooling coolant liquid of liquid is 2
The NaCl aqueous solution of wt%.
It is 250 ~ 300 DEG C of meltings of smelting temperature in a nitrogen atmosphere that molten condition is smelted into described in above-mentioned steps (1)
At molten condition, the extrusion temperature of extruding pelletization described in step (3) is 180 ~ 240 DEG C, 50 ~ 200 r/min of revolving speed.
Poly- chain extension-weight the polycondensating process of solution are as follows: 1) semi-finished stock will be granulated through depolymerization, obtain depolymerised mixture；Depolymerization
Mixture is mixed with ethylene glycol, and mixing mass ratio is 1:1 ~ 3, is carried out transesterification and chain extending reaction, is obtained second containing terephthalic acid (TPA)
The reaction mixture of diol ester；2) then reaction mixture is carried out reaggregation reaction, obtained PET and made by vacuum distillation purification
Grain raw material
After adopting the above technical scheme, the present invention have the advantages that following features and: 1, simple production process can give birth to as needed
The regenerated terylene coloured silk yarn of a variety of styles is produced, and is able to satisfy industrialization and produces and processes on a large scale, meets the needs of production and processing；2,
Recycle waste and old terylene monofilament, waste textile fabric, the discharge such as no waste water, waste residue；3, added value of product is high, answers with industry
With value, high-qualityization is recycled for waste textile recycle and provide new thinking；4, the color yarn of regeneration is realized not need to be dyed,
Generation environment does not pollute, and only designs and prepares technique by reasonably adjusting formula and is achieved with, fast colours performance is good, comprehensive
Can be excellent, have the advantages that energy conservation and environmental protection.
Specific embodiment
The discarded terylene textile fabric used by the following embodiments of the present invention, to recycle solid waste material, material is
The terylene of pure PET itself has various colors, recycles after sorted, broken, washing, vacuum drying, without carrying out at decoloration
Reason is smelted directly into filtering removal inorganic impurity after molten condition, obtains granulation semi-finished stock；Semi-finished stock is through solving poly- expansion
Chain -ester exchanges-meets again technique, obtains granulating raw material；The carboxylate is the reactant of second alcohol and carboxylic acid, reaction temperature 220 ~ 235
℃.Reaction gained carboxylate need to be granulated with color masterbatch, brightening agent by formula melting mixing, obtain carboxylate masterbatch.Below in conjunction with tool
Body embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate the present invention not for limitation sheet
The range of invention.
Embodiment 1
A kind of regeneration coloured silk yarn of discarded terylene textile fabric production is by recycling 80 parts of terylene textile fabric, 8 parts of carboxylate, color masterbatch 5
Part, 5 parts of brightening agent, 2 parts of chain extender compositions.
Preparation method is carried out by following step:
(1) the discarded terylene textile fabric of collection (main component is terylene, is conventional products) is sorted, is crushed, washed,
Vacuum drying forms foam material；It is carried out after being smelted into molten condition in foam material investment smelting furnace, melt filtration removes inorganic impurity, with negative
Pressure by melt bubble and oligomer extract out, obtain granulation semi-finished stock, investment reaction kettle carries out solving poly- chain extension -ester exchange
It meets again, obtains granulating raw material；Solve poly- chain extension-weight polycondensating process are as follows: 1) gained is filtered into melting and be granulated semi-finished stock through 190 DEG C
Glycolysis temperature, 5 h alcoholysis time alcoholysis depolymerization, obtains depolymerised mixture；Depolymerised mixture is mixed with quality of glycol ratio 1:2, into
Row transesterification and chain extending reaction, reaction temperature control within the scope of 180~210 DEG C, and the reaction time of meeting again can be controlled in 5~6
h；Obtain the reaction mixture containing ethylene glycol terephthalate；2) by reaction mixture by vacuum distillation purification, then into
Row reaggregation reaction, obtains PET granulating raw material；
(2) by carboxylate, (PET base material, pigment are colour carbon black, conventional products with color masterbatch；Polyethylene glycol oxide is as dispersion
Agent), fluorescent whitening agent titanium dioxide as brightening agent, glycidyl methacrylate as chain extender melt blending extrusion make
Grain, obtains carboxylate masterbatch；The carboxylate is the reactant of second alcohol and carboxylic acid, the preparation method comprises the following steps: the proportion of second alcohol and carboxylic acid is
1:1, at 110 DEG C of reaction temperature, esterification generates the reactant of second alcohol and carboxylic acid；
(3) screw extruder is added together with carboxylate masterbatch in PET granulating raw material, the melt blending extruding pelletization at 200 DEG C,
Color yarn raw material must be regenerated；
(4) color yarn raw material will be regenerated and carry out melt spinning, spinning temperature is 275 DEG C, and liquid cooling temperature is 65 DEG C, stretching ratio
It is 4 times, draft temperature is 190 DEG C, and heat setting temperature is 265 DEG C；The NaCl aqueous solution that the cooling coolant liquid of liquid is 2 wt%.
Embodiment 2
A kind of regeneration coloured silk yarn of discarded terylene textile fabric production is by recycling 85 parts of terylene textile fabric, 3 parts of carboxylate, color masterbatch 5
Part, 5 parts of brightening agent, 2 parts of chain extender compositions.
Preparation method is carried out by following step:
(1) the discarded terylene textile fabric of collection (main component is terylene, is conventional products) is sorted, is crushed, washed,
Vacuum drying forms foam material；It is carried out after being smelted into molten condition in foam material investment smelting furnace, melt filtration removes inorganic impurity, with negative
Pressure by melt bubble and oligomer extract out, obtain granulation semi-finished stock, investment reaction kettle carries out solving poly- chain extension -ester exchange
It meets again, obtains granulating raw material；Solve poly- chain extension-weight polycondensating process are as follows: 1) melting is filtered into gained semi-finished stock through 200 DEG C of alcoholysis
Temperature, 5 h alcoholysis time alcoholysis depolymerization, obtains depolymerised mixture；Depolymerization product is mixed with quality of glycol ratio 1:2, carries out ester friendship
It changes and chain extending reaction, reaction temperature controls within the scope of 180~210 DEG C, the reaction time of meeting again can be controlled in 5~6 h；It obtains
Reaction mixture containing ethylene glycol terephthalate；2) then reaction mixture is met again by vacuum distillation purification
Reaction is closed, PET granulating raw material is obtained；
(2) by carboxylate and color masterbatch (PET base material；Red fluorescence pigment, conventional products；Polyethylene glycol oxide is as dispersing agent),
Fluorescent whitening agent titanium dioxide obtains carboxylate masterbatch as brightening agent, acrylate ACR chain extender melt blending extruding pelletization；Institute
Carboxylate is stated, is the reactant of second alcohol and carboxylic acid, the preparation method comprises the following steps: the proportion of second alcohol and carboxylic acid is 1:1.5, in reaction temperature
At 110 DEG C, esterification generates the reactant of second alcohol and carboxylic acid；
(3) screw extruder is added together with carboxylate masterbatch in granulating raw material, melt blending extruding pelletization, obtains at 210 DEG C
Regenerate color yarn raw material；
(4) color yarn raw material will be regenerated and carry out melt spinning, spinning temperature is 280 DEG C, and liquid cooling temperature is 60 DEG C, stretching ratio
It is 4 times, draft temperature is 190 DEG C, and heat setting temperature is 265 DEG C；The NaCl aqueous solution that the cooling coolant liquid of liquid is 2 wt%.
Embodiment 3
A kind of regeneration coloured silk yarn of discarded terylene textile fabric production is by recycling 90 parts of terylene textile fabric, 2 parts of carboxylate, color masterbatch 5
Part, 2 parts of brightening agent, 1 part of chain extender.
Preparation method is carried out by following step:
(1) the discarded terylene textile fabric of collection (main component is terylene, is conventional products) is sorted, is crushed, washed,
Vacuum drying forms foam material；It is carried out after being smelted into molten condition in foam material investment smelting furnace, melt filtration removes inorganic impurity, with negative
Pressure by melt bubble and oligomer extract out, obtain granulation semi-finished stock, investment reaction kettle carries out solving poly- chain extension -ester exchange
It meets again, obtains granulating raw material；Solve poly- chain extension-weight polycondensating process are as follows: 1) melting is filtered into gained semi-finished stock through 200 DEG C of alcoholysis
Temperature, 6 h alcoholysis time alcoholysis depolymerization, obtains depolymerised mixture；Depolymerization product is mixed with quality of glycol ratio 1:3, carries out ester friendship
It changes and chain extending reaction, reaction temperature controls within the scope of 180~210 DEG C, the reaction time of meeting again can be controlled in 5~6 h；It obtains
Reaction mixture containing ethylene glycol terephthalate；2) then reaction mixture is met again by vacuum distillation purification
Reaction is closed, PET granulating raw material is obtained；
(2) by carboxylate and color masterbatch (PET base material；Pearlescent pigment, conventional products；Polyethylene glycol oxide is as dispersing agent), fluorescence
Brightening agent titanium dioxide obtains carboxylate masterbatch as brightening agent, epoxide polymerization type chain extender melt blending extruding pelletization；The esterification
Object is the reactant of second alcohol and carboxylic acid, the preparation method comprises the following steps: the quality proportioning of second alcohol and carboxylic acid is 1:1.7, in reaction temperature 110
At DEG C, esterification generates the reactant of second alcohol and carboxylic acid；
(3) screw extruder is added together with carboxylate masterbatch in granulating raw material, melt blending extruding pelletization, obtains at 220 DEG C
Regenerate color yarn raw material；
(4) color yarn raw material will be regenerated and carry out melt spinning, spinning temperature is 275 DEG C, and liquid cooling temperature is 60 DEG C, stretching ratio
It is 4 times, draft temperature is 180 DEG C, and heat setting temperature is 265 DEG C；The NaCl aqueous solution that the cooling coolant liquid of liquid is 2 wt%.
Embodiment 4
A kind of regeneration coloured silk yarn of discarded terylene textile fabric production is by recycling 90 parts of terylene textile fabric, 2 parts of carboxylate, color masterbatch 2
Part, 3 parts of brightening agent, 3 parts of chain extender compositions.
Preparation method is carried out by following step:
(1) the discarded terylene textile fabric of collection (main component is terylene, is conventional products) is sorted, is crushed, washed,
Vacuum drying forms foam material；It is carried out after being smelted into molten condition in foam material investment smelting furnace, melt filtration removes inorganic impurity, with negative
Pressure by melt bubble and oligomer extract out, obtain granulation semi-finished stock, investment reaction kettle carries out solving poly- chain extension -ester exchange
It meets again, obtains granulating raw material；Solve poly- chain extension-weight polycondensating process are as follows: 1) melting is filtered into gained semi-finished stock through 200 DEG C of alcoholysis
Temperature, 6 h alcoholysis time alcoholysis depolymerization, obtains depolymerised mixture；Depolymerization product is mixed with quality of glycol ratio 1:1.5, carries out ester
Exchange and chain extending reaction, reaction temperature control within the scope of 180~210 DEG C, and the reaction time of meeting again can be controlled in 5~6 h；?
To the reaction mixture containing ethylene glycol terephthalate；2) then reaction mixture is subjected to weight by vacuum distillation purification
Polymerization reaction obtains PET granulating raw material；
(2) by carboxylate and color masterbatch (PET base material；Claret pigment, conventional products；Polyethylene glycol oxide is as dispersing agent), it is glimmering
Optical brightener titanium dioxide, as chain extender melt blending extruding pelletization, obtains ester as brightening agent, glycidyl methacrylate
Compound masterbatch；The carboxylate is the reactant of second alcohol and carboxylic acid, the preparation method comprises the following steps: the quality proportioning of second alcohol and carboxylic acid is 1:
2, at 110 DEG C of reaction temperature, esterification generates the reactant of second alcohol and carboxylic acid；(3) by granulating raw material and carboxylate masterbatch
Screw extruder is added together, the melt blending extruding pelletization at 230 DEG C must regenerate color yarn raw material；
(4) color yarn raw material will be regenerated and carry out melt spinning, spinning temperature is 270 DEG C, and liquid cooling temperature is 65 DEG C, stretching ratio
It is 4 times, draft temperature is 180 DEG C, and heat setting temperature is 260 DEG C；The NaCl aqueous solution that the cooling coolant liquid of liquid is 2 wt%.
Claims (7)
1. a kind of regeneration coloured silk yarn of discarded terylene textile fabric production, which is characterized in that be made of the raw material that following weight matches:
Discarded 80 ~ 95 parts of terylene textile fabric
2 ~ 10 parts of carboxylate
1 ~ 5 part of color masterbatch
1 ~ 5 part of brightening agent
Chain extender 1 ~ 2%.
2. a kind of regeneration coloured silk yarn of discarded terylene textile fabric production according to claim 1, which is characterized in that described discarded
Terylene textile fabric, waste and old clothing, weaving leftover pieces, defect ware, waste silk selected from pure polyester material are one or more of, itself has
Various colors include senior middle school's low-viscosity different cultivars.
3. a kind of regeneration coloured silk yarn of discarded terylene textile fabric production according to claim 1, which is characterized in that the esterification
Object, be second alcohol and carboxylic acid reactant, the preparation method comprises the following steps: the quality proportioning of second alcohol and carboxylic acid be 1:1 ~ 2, reaction temperature 100 ~
At 160 DEG C, esterification generates the reactant of second alcohol and carboxylic acid.
4. a kind of regeneration coloured silk yarn of discarded terylene textile fabric production according to claim 1, which is characterized in that the color masterbatch
Material, selected from dark or black color masterbatch.
5. a kind of preparation method of the color yarn of regeneration of any discarded terylene textile fabric production of claim 1-4, including such as
Lower step:
(1) the discarded terylene textile fabric of the recycling of collection sorted first, be crushed, washed, be dried in vacuo, form foam material；
Secondly foam material is put into smelting furnace and filtered after being smelted into molten condition, removed inorganic impurity, obtain granulation semi-finished stock；
(2) it will be granulated in semi-finished stock investment reaction kettle again and carries out solving the polycondensation again of poly- chain extension-, obtain granulating raw material；
(3) by carboxylate and color masterbatch, brightening agent and chain extender response type exhaust screw machine extruding pelletization, carboxylate mother is obtained
Material, then screw extruder is added together with carboxylate masterbatch in granulating raw material made from step (2), it is melted at 180 ~ 240 DEG C
Blending extrusion is granulated, and must regenerate color yarn raw material；
(4) color yarn raw material will be regenerated and carry out melt spinning, spinning temperature is 260 ~ 280 DEG C, and liquid cooling temperature is 50 ~ 70 DEG C,
Stretching ratio is 3 ~ 5 times, and draft temperature is 160 ~ 180 DEG C, and heat setting temperature is 250 ~ 260 DEG C；The cooling coolant liquid of liquid is 2
The NaCl aqueous solution of wt%.
6. a kind of preparation method of the color yarn of regeneration of discarded terylene textile fabric production according to claim 5, feature exist
In being smelted into molten condition described in step (1) is that in a nitrogen atmosphere, 250 ~ 300 DEG C of smelting temperature are smelted into molten
State, the extrusion temperature of extruding pelletization described in step (3) are 180 ~ 240 DEG C, 50 ~ 200 r/min of revolving speed.
7. a kind of preparation method of the color yarn of regeneration of discarded terylene textile fabric production according to claim 5, feature exist
In the poly- chain extension-weight polycondensating process of solution are as follows: 1) semi-finished stock will be granulated through depolymerization, obtain depolymerised mixture；Depolymerization mixing
Object is mixed with ethylene glycol, and mixing mass ratio is 1:1 ~ 3, carries out transesterification and chain extending reaction, is obtained containing terephthalate
The reaction mixture of ester；2) then reaction mixture is subjected to reaggregation reaction by vacuum distillation purification, it is former obtains PET granulation
Material.
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Cited By (5)
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| CN110734578A (en) * | 2019-11-13 | 2020-01-31 | 宁波大发化纤有限公司 | Method for separating and obtaining regenerated polyester from waste polyester raw materials |
| CN110791063A (en) * | 2019-11-13 | 2020-02-14 | 宁波大发化纤有限公司 | Waste polyester particles containing micropores and preparation method and application thereof |
| CN110818943A (en) * | 2019-11-13 | 2020-02-21 | 浙江理工大学 | Method for preparing waste polyester particles containing micropores by gas foaming |
| CN112030271A (en) * | 2020-08-31 | 2020-12-04 | 石狮市隽可进出口贸易有限公司 | Manufacturing process of recyclable green and environment-friendly education equipment |
| CN112226834A (en) * | 2020-09-02 | 2021-01-15 | 张家港市昌源氨纶制造有限公司 | Melt spinning production process for adding regenerated tpu at high proportion |
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| CN110791063A (en) * | 2019-11-13 | 2020-02-14 | 宁波大发化纤有限公司 | Waste polyester particles containing micropores and preparation method and application thereof |
| CN110818943A (en) * | 2019-11-13 | 2020-02-21 | 浙江理工大学 | Method for preparing waste polyester particles containing micropores by gas foaming |
| CN110818943B (en) * | 2019-11-13 | 2022-03-08 | 浙江理工大学 | Method for preparing waste polyester particles containing micropores by gas foaming |
| CN110734578B (en) * | 2019-11-13 | 2022-03-11 | 宁波大发化纤有限公司 | Method for separating and obtaining regenerated polyester from waste polyester raw material |
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