CN109487393B - Multifunctional terylene fancy yarn and preparation method thereof - Google Patents

Multifunctional terylene fancy yarn and preparation method thereof Download PDF

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CN109487393B
CN109487393B CN201811479947.XA CN201811479947A CN109487393B CN 109487393 B CN109487393 B CN 109487393B CN 201811479947 A CN201811479947 A CN 201811479947A CN 109487393 B CN109487393 B CN 109487393B
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yarn
dtex
elongation
moy
break
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CN109487393A (en
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孙建钢
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Zhejiang Hengyi Petrochemical Co ltd
Zhejiang Hengyi Petrochemical Research Institute Co Ltd
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Zhejiang Hengyi Petrochemical Co ltd
Zhejiang Henglan Technology Co Ltd
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C08G63/82—Preparation processes characterised by the catalyst used
    • C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/224—Selection or control of the temperature during stretching
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Abstract

The invention relates to the field of spinning and discloses a multifunctional fancy polyester yarn and a preparation method thereof. The yarn of the invention has soft wool feel and unique style. The product prepared by the invention has excellent shading performance, good perspective prevention, strong layering and permanent flame retardant effect, and can be mainly applied to the fields of carpets, curtains, decorative fabrics and the like.

Description

Multifunctional terylene fancy yarn and preparation method thereof
Technical Field
The invention relates to the field of textiles, in particular to a multifunctional terylene fancy yarn and a preparation method thereof.
Background
With the increasing living standard of people, no matter the living needs or the decoration needs, a wide space is provided for the development of household textiles.
At present, common terylene or natural fibers are mostly adopted in the home textile industry, and fabrics woven by the fibers have poor comfort, single style and high price.
The chinese patent application No. 201620785506.2 discloses a flower formula yarn, and this utility model discloses a core yarn and outer yarn, the core yarn includes cotton yarn, dacron yarn and ramie yarn winding and forms, outer yarn is including the ramie string bag that cotton string bag, the dacron string bag that dacron yarn were woven, the ramie yarn woven become respectively with cotton yarn, establish ties through PET film yarn between cotton string bag, dacron string bag, the ramie string bag and form even, have the fold and recover the function, do not influence the effect of weaving the smooth and easy nature of processing simultaneously again. But the utility model has the advantages of single product style and function and narrow application range.
The chinese patent application No. 201810051749.7 discloses a method for preparing a fancy yarn, comprising the steps of: 1) cotton fibers, wool fibers, silk fibers, hemp fibers, chemical fiber fibers, spun silk fibers or raw materials of cotton waste during spinning are made into knots, and the knots are dyed according to requirements; 2) selecting a base yarn raw material, and carrying out cotton cleaning on the base yarn raw material; 3) mixing the knots with the base yarn, fully mixing, and carding by using a carding machine; 4) carrying out two drawing processes by using a drawing frame; 5) carrying out a roving process by using roving; 6) carrying out a spinning process by using a spinning frame; 7) and (5) performing a winding process by using a winding machine. The prepared fancy yarn has unique appearance and gorgeous color, but the product has single function, and meanwhile, the manufacturing process is complex and the cost is high.
Disclosure of Invention
In view of the fact that common home textile fabrics are poor in comfort, single in style color and function, the invention provides the multifunctional terylene fancy yarn and the preparation method thereof. The product prepared by the invention has excellent shading performance, good perspective prevention, strong layering and permanent flame retardant effect, and can be mainly applied to the fields of carpets, curtains, decorative fabrics and the like.
The specific technical scheme of the invention is as follows: a multifunctional fancy terylene yarn is formed by compounding four different spinning yarns, namely fine denier porous flame-retardant POY yarns with two different specifications, a cationic MOY yarn and a full-dull FDY yarn. The full-dull FDY is a main trunk and is in a straight state, the cation MOY and the two fine-denier porous flame-retardant POY are wound on the full-dull FDY, the fine-denier porous flame-retardant POY is uniformly wound, and the cation MOY is wound at intervals.
In the four spinning lines, the full-dull FDY yarns play a main role and can be used as a main trunk, so that the yarns have an excellent shading effect; on one hand, the cation MOY filaments can increase the cohesion of the product, and on the other hand, the density interval winding of the cation MOY filaments can endow the fibers with rich colors; the fine denier porous flame-retardant POY yarn floats on the surface of the yarn, gives fiber hairiness feeling and has flame-retardant effect, and the two POY yarns are compounded to obtain more abundant holes and better hand feeling.
Preferably, the full-dull FDY filament has the following specifications: the breaking strength is 3.0-3.5 cN/dtex, and the elongation at break is 25-30%; the specification of the cation MOY filament is as follows: the breaking strength is 1.7-1.9cN/dtex, the elongation at break is 160-180%; the fine denier porous flame-retardant POY yarn is characterized by comprising the following specifications: phosphorus content 5000-.
Preferably, the spinning thread is selected from one of the following pairs:
a. cationic MOY filaments: 273dtex/48f, breaking strength of 1.75 cn/dtex, elongation at break of 175%;
full dull FDY yarn: 167 dtex/72 f, breaking strength of 3.1cn/dtex, elongation at break of 27%;
fine denier porous flame retardant POY yarn: 365 dtex/288 f, breaking strength of 2.05cn/dtex, elongation at break of 128%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break of 125%;
b. cationic MOY filaments: 205dtex/48f, breaking strength of 1.70 cn/dtex and elongation at break of 180 percent;
full dull FDY yarn: 111 dtex/72 f, strength 3.3cn/dtex, elongation 25%;
fine denier porous flame retardant POY yarn: 270dtex/288 f, breaking strength of 2.08cn/dtex, elongation at break of 126%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break 125%.
c. Cationic MOY filaments: 102dtex/48f, breaking strength of 1.88 cn/dtex and elongation at break of 165%;
full dull FDY yarn: 83 dtex/72 f, breaking strength of 3.0cn/dtex, elongation at break of 28%;
fine denier porous flame retardant POY yarn: 175dtex/288 f, breaking strength of 2.1 cn/dtex, elongation at break of 122%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break 125%.
The team of the invention finds that in order to further improve the comprehensive performance of the yarns, the spinning threads in the same combination need to be optimized and matched, and the individual performance of each spinning thread and the effect possibly shown after combination need to be comprehensively considered during matching. After a large number of test trials are carried out on the theoretical basis by the team, the yarn compounded by the three spinning lines matched with each other is found to have the best comprehensive effect. Obtaining the above combinations requires the present invention to be based on the rich experience of the present team and is not obtainable with a simple permutation of the combinations.
A preparation method of multifunctional fancy polyester yarn comprises the following steps:
1) the cation MOY filament is fed through a zero roller, intermittently heated by a hot roller under the reciprocating swing action of a swing rod, and then enters a roller.
In the step 1), the cation MOY yarn is heated by a hot roller intermittently under the action of a swing rod, and is mainly drafted and shaped in the section, wherein the effect of the swing rod is as follows: 1. the cation MOY filament can be wound outside the filament bundle after being finally compounded; 2. strand silk intermittent type heats (heat when the strand silk contacts the hot-roll, do not heat when the strand silk breaks away from the hot-roll, the pendulum rod is at the swing back and forth in-process simultaneously, and tension also can be different, consequently is equivalent to carry out inhomogeneous draft to the strand silk, and the inside crystal orientation of strand silk produces the change), the strand silk that adopts this processing mode to obtain because the draft degree is different, can just demonstrate dark light double-colored special pattern by a strand silk, and simultaneously in final gained yarn, MOY winding effect on FDY presents the interval formula that is one section density and is sparse and distributes).
2) Meanwhile, two fine denier porous flame-retardant POY yarns are pre-meshed, fed through another zero roller and then enter a roller.
3) The cation MOY filament, the fine denier porous flame-retardant POY filament and the full-dull FDY filament are converged at a roller; then the terylene multifunctional fancy yarn is obtained after the steps of drafting, deformation, cooling, false twisting, network compounding, shaping and winding in sequence.
In the step 3), the three spinning threads are compounded to obtain a finished product.
Preferably, the deformation temperature is 200-220 ℃.
Preferably, the setting temperature is 180-.
Preferably, the cationic MOY filaments have a draft ratio DR between zero and one rollers011.55-1.65; drafting ratio DR of fine-denier porous flame-retardant POY (Pre-oriented yarn) between zero roller and one roller020.98-1.0 and a main draft DR of 1.05-1.1.
In order to make the yarn have better effect, the draft ratio is strictly limited, and at the draft ratio, the POY filaments are in an overfeed relaxed state, so that the POY filaments float on the surface of the yarn in the finally obtained yarn, and the POY has a porous structure, so that the POY has a fluffy effect and has a hand feeling similar to fluff. Meanwhile, the POY is also flame-retardant yarn, so that the flame-retardant effect is achieved. As a common knowledge, burning is from the outside to the inside, and the POY with flame retardant effect floats on the surface of the yarn in the invention, so that the POY has the best flame retardant effect, and the POY as a main body does not need to have excellent flame retardant performance.
Preferably, the processing speed is 300-400 m/min.
Preferably, in order to further improve the quality of the yarn, the invention defines the original raw material yarns, and the fine denier porous flame-retardant POY yarn, the cationic MOY yarn and the full-dull FDY yarn are all prepared by taking polyester chips as raw materials and spinning after double-screw extrusion, wherein the preparation method of the polyester chips comprises the following two methods:
the first method comprises the following steps: carrying out esterification reaction on terephthalic acid and ethylene glycol at 230-260 ℃, wherein the pressure is not more than 0.3MPa, and reacting for 1-3 h to obtain a prepolymer; then carrying out polycondensation reaction under the vacuum condition, wherein the reaction temperature is 270-290 ℃, the pressure is lower than 100Pa, and the reaction is carried out for 1-4 h to prepare modified polyester; drying and slicing to obtain polyester slices; the catalyst is a silicon-titanium composite homogeneous catalyst, and is added before or after the esterification reaction, and the dosage is 0.5-10 ppm calculated by polyester;
and the second method comprises the following steps: pulping terephthalic acid and ethylene glycol as raw materials, and sequentially carrying out esterification, pre-polycondensation and final polycondensation; wherein the esterification reaction temperature is controlled to be 220-270 ℃, the pressure is normal pressure-0.5 MPa, and the time is 1.5-5.5 h; the temperature of the pre-polycondensation reaction is controlled to be 240-270 ℃, the pressure is 1-101 KPa, and the time is 0.5-2.5 h; controlling the final polycondensation reaction temperature at 270-300 ℃, controlling the pressure at 30-300 Pa, and preparing polyester for 1-3.5 h; drying and slicing to obtain polyester slices; the catalyst is an environment-friendly titanium-based composite catalyst for polyester, and is added before or after esterification; based on the yield of the polyester, the addition mass of the catalyst is 2-50 ppm calculated by titanium element.
The multifunctional terylene fancy yarn is applied to carpets, curtains and decorative textiles.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a preparation method of multifunctional fancy polyester yarn, which has the advantages of good flame retardant property, comfortable hand feeling, distinct gradation, strong three-dimensional sense and various styles.
Drawings
FIG. 1 is a process flow diagram of the present invention;
the reference signs are: MOY zero roller 0, swing rod 1, POY zero roller 2, roller 3, hot box 4, cooling plate 5, false twister 6, two rollers 7, network nozzle 8, two hot boxes 9, three rollers 10 and winding device 11.
Detailed Description
The present invention will be further described with reference to the following examples.
General examples
A multifunctional fancy terylene yarn is formed by compounding four different spinning yarns, which are respectively as follows:
full dull FDY yarn: the breaking strength is 3.0-3.5 cN/dtex, and the elongation at break is 25-30%.
Cationic MOY filaments: the breaking strength is 1.7-1.9cN/dtex, and the elongation at break is 160-180%.
Two specifications of fine denier porous flame-retardant POY yarn: phosphorus content of 1000-.
The full-dull FDY is a main trunk and is in a straight state, the cation MOY and the two fine-denier porous flame-retardant POY are wound on the full-dull FDY, the fine-denier porous flame-retardant POY is uniformly wound, and the cation MOY is wound at intervals.
Wherein, the preferable spinning line is selected from one of the following pairs:
a. cationic MOY filaments: 273dtex/48f, breaking strength of 1.75 cn/dtex, elongation at break of 175%;
full dull FDY yarn: 167 dtex/72 f, breaking strength of 3.1cn/dtex, elongation at break of 27%;
fine denier porous flame retardant POY yarn: 365 dtex/288 f, breaking strength of 2.05cn/dtex, elongation at break of 128%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break of 125%;
b. cationic MOY filaments: 205dtex/48f, breaking strength of 1.70 cn/dtex and elongation at break of 180 percent;
full dull FDY yarn: 111 dtex/72 f, strength 3.3cn/dtex, elongation 25%;
fine denier porous flame retardant POY yarn: 270dtex/288 f, breaking strength of 2.08cn/dtex, elongation at break of 126%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break 125%.
c. Cationic MOY filaments: 102dtex/48f, breaking strength of 1.88 cn/dtex and elongation at break of 165%;
full dull FDY yarn: 83 dtex/72 f, breaking strength of 3.0cn/dtex, elongation at break of 28%;
fine denier porous flame retardant POY yarn: 175dtex/288 f, breaking strength of 2.1 cn/dtex, elongation at break of 122%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break 125%.
The fine-denier porous flame-retardant POY, the cationic MOY and the full-dull FDY are all prepared by spinning polyester chips which are used as raw materials after being extruded by a double screw.
A preparation method of multifunctional fancy polyester yarn comprises the following steps:
1) the cation MOY filament is fed through a zero roller, intermittently heated by a hot roller under the reciprocating swing action of a swing rod, and then enters a roller. Drafting ratio DR of cation MOY filament between zero roller and one roller01Is 1.55-1.65.
2) Meanwhile, two fine denier porous flame-retardant POY yarns are pre-meshed, fed through another zero roller and then enter a roller. Drafting ratio DR of fine-denier porous flame-retardant POY (Pre-oriented yarn) between zero roller and one roller02Is 0.98-1.0.
3) The cation MOY filament, the fine denier porous flame-retardant POY filament and the full-dull FDY filament are converged at a roller, and the main drafting DR is 1.05-1.1. Then obtaining the terylene multifunctional fancy yarn after the steps of drafting, deforming (200-.
The device used in the composite process is shown in fig. 1, and comprises the following steps in sequence: MOY zero roller 0, swing rod 1 (the hot roller is positioned on one side of the swing rod and is not shown in the figure), POY zero roller 2, one roller 3, one hot box 4, cooling plate 5, false twister 6, two rollers 7, network nozzle 8, two hot boxes 9, three rollers 10 and winding device 11.
Example 1
Preparing cation MOY yarns by spinning, wherein the specification is 273dtex/48f, the breaking strength is 1.75 cn/dtex, and the breaking elongation is 175%; the full-dull FDY yarn is 167 dtex/72 f in specification, the breaking strength is 3.1cn/dtex, and the elongation at break is 27%; the fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 365 dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.05cn/dtex, and the elongation at break is 128 percent; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
And (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and the other two kinds of fine-denier porous flame-retardant POY yarns through another zero roller without drafting, converging the full-dull FDY yarn at a roller, sequentially performing drafting, deforming, cooling, false twisting, network compounding, shaping and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 400m/min, the first hot box deformation temperature is 220 ℃, the second hot box shaping temperature is 200 ℃, and the drafting DR of the cation MOY filament between a zero roller and a first roller01Is 1.60, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02It was 0.985 and the main draft DR was 1.08.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.5cN/dtex, the elongation at break is 21.5%, and the shrinkage in boiling water is 3.5%. The fabric woven by the fiber is soft and comfortable to the hands. Can weave fabrics with strong stereoscopic impression and distinct layers. The fabric has unique style, various colors and styles and good shading and flame-retardant effects.
Example 2
The cation MOY yarn is prepared by spinning, the specification is 205dtex/48f, the breaking strength is 1.70 cn/dtex, the elongation at break is 180 percent, the specification of the full-dull FDY yarn is 111 dtex/72 f, the strength is 3.3cn/dtex, and the elongation is 25 percent. The fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 270dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.08cn/dtex, and the elongation at break is 126%; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
In example 2, the fine denier porous flame retardant POY yarn, the cationic MOY yarn, and the full dull FDY yarn were all produced by spinning polyester chips as raw materials after twin-screw extrusion. The preparation method of the polyester chip comprises the following steps:
preparing a silicon-titanium composite homogeneous catalyst: a500 ml flask equipped with a magnetic stirrer and a condenser was charged with 74.4g (1.2 mol) of ethylene glycol, 5.9216g (0.06 mol) of sodium acetate and 2.0908g (0.006 mol) of sodium dodecylbenzenesulfonate were dissolved therein, then 20.2g (0.06 mol) of n-butyl titanate, 50.0g (0.24 mol) of ethyl orthosilicate and 27.6g (0.6 mol) of ethanol were added to the solution, reacted at 85 ℃ for 2.5 hours, after small molecules were distilled off, 12.6056g (0.06 mol) of citric acid monohydrate and 9.5352g (0.06 mol) of phenylphosphonic acid were added to the reaction system, reacted at 85 ℃ for 2.5 hours, and after small molecules were distilled off, a 1.4001% titanium-containing liquid catalyst was obtained.
Preparation of polyester chip: uniformly mixing 16.6kg (25 mol) of terephthalic acid (PTA), 1.86kg (30 mol) of Ethylene Glycol (EG) and a silicon-titanium composite homogeneous catalyst solution (the Ti content is 1-6 ppm based on the weight of PET), adding the mixture into a reaction kettle, and carrying out esterification reaction at 250 ℃ and under the pressure of not more than 0.3 MPa. After the esterification reaction is finished, vacuumizing until the pressure is lower than 100MPa, reacting for 1-3 h at 280 ℃ to obtain polyester, and drying and slicing to obtain the polyester slice.
The polyester chips prepared by the method have high quality, normal color and no yellowing. The reason is that:
1. the invention regulates and controls the catalytic activity of the titanium composite catalyst by strictly regulating and controlling the size and the aperture of the mesoporous nano-microspheres and the proportion of the mesoporous microspheres, the titanium compound and the metal catalytic auxiliary agent. The catalyst is applied to polyester synthesis, can effectively reduce the occurrence of side reactions, and simultaneously solves the technical problem that the color of a titanium-based catalytic polyester product is yellow.
2. Compared with antimony catalyst, the titanium composite catalyst has the advantages of high catalytic activity, environmental protection; compared with the conventional titanium catalyst, the titanium composite catalyst prepared by the invention has the advantages of adjustable catalytic efficiency, high temperature resistance and hydrolysis resistance; the polyester product prepared by the catalyst has stable quality and good color.
Preparing yarns:
and (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and the other two kinds of fine-denier porous flame-retardant POY yarns through another zero roller without drafting, converging the full-dull FDY yarn at a roller, sequentially performing drafting, deforming, cooling, false twisting, network compounding, shaping and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 350m/min, the first hot box deformation temperature is 210 ℃, the second hot box shaping temperature is 190 ℃, and the drafting DR of the cation MOY filament between a zero roller and a first roller011.65, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02It was 0.98 and the main draft DR was 1.1.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.8cN/dtex, the elongation at break is 20.5%, and the shrinkage in boiling water is 3.0%. The fabric woven by the fiber is soft and comfortable to the hands. Can weave fabrics with strong stereoscopic impression and distinct layers. The fabric has unique style, various colors and styles and good shading and flame-retardant effects.
Example 3
The cation MOY yarn is prepared by spinning, the specification is 102dtex/48f, the breaking strength is 1.88 cn/dtex, the elongation at break is 165%, the specification of the full-dull FDY yarn is 83 dtex/72 f, the breaking strength is 3.0cn/dtex, and the elongation at break is 28%. The fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 175dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.1 cn/dtex, and the elongation at break is 122%; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
In example 3, the fine denier porous flame retardant POY yarn, the cationic MOY yarn, and the full dull FDY yarn were all produced by spinning polyester chips as raw materials after twin-screw extrusion. The preparation method of the polyester chip comprises the following steps:
preparation of the environment-friendly titanium composite catalyst for polyester: dissolving cetyl trimethyl ammonium bromide and sodium dodecyl benzene sulfonate in 1000ml deionized water according to the molar ratio of 4:1 to prepare a solution with the total concentration of 0.03mol/L, and standing for 24 hours after ultrasonic treatment for 0.5 hour. Then 10ml of ammonia water, 250ml of ethanol and 250ml of diethyl ether are added, 30g of ethyl orthosilicate is added after vigorous stirring for 0.5h, and stirring is continued for 4h to complete the reaction. And (3) carrying out suction filtration on the reaction liquid, repeatedly washing a filter cake for 5 times by using ethanol and water, then placing the filter cake in a drying oven at 60 ℃ for drying for 12 hours, then placing a product in a muffle furnace at 550 ℃ for roasting for 3 hours, and crushing to obtain the mesoporous silica nano microspheres. And then adding ethylene glycol, magnesium acetate and titanium tetrachloride into a three-neck flask in sequence, adding the mixture in a molar ratio of 20:4:1, adding mesoporous silica nano microspheres in a mass ratio of 5:1 to titanium tetrachloride, and carrying out ultrasonic reaction for 4 hours under the protection of nitrogen, wherein the reaction temperature is controlled at 160 ℃, and the stirring speed is 120 r/min. And standing for 24h after the reaction is finished, filtering to obtain a solid, repeatedly washing with ethanol and deionized water for 3 times, and drying to obtain the environment-friendly titanium composite catalyst for polyester.
Preparation of polyester chip: 1.86kg of ethylene glycol, 16.6kg of purified terephthalic acid and an environmentally friendly titanium-based composite catalyst for polyester (the mass of titanium atoms is 5ppm, calculated on the theoretical yield of polyester) were put into a 2L reactor and slurried. Controlling the esterification temperature at 240 ℃, the pressure at 0.3MPa, the time at 2.5h and the esterification rate at 93 percent; adding flatting agent titanium dioxide after esterification, wherein the addition amount is 0.25 percent (calculated by the theoretical yield of polyester); the temperature of the pre-polycondensation is controlled to be 260 ℃, and the reaction pressure is 50 KPa; and the final polycondensation is controlled at 280 ℃, the pressure is 50Pa, and the polycondensation time is 2.5h to obtain the polyester. Drying and slicing to obtain the polyester slices.
The polyester chips prepared by the method have high quality, normal color and no yellowing. The reason is that:
1. the invention changes the proportion of titanium and silicon, introduces sulfonate, organic ligand and phosphoric acid complexing agent in the preparation process of the catalyst in a breakthrough way, the introduction of the sulfonate, the organic ligand and the phosphoric acid complexing agent does not influence the content of titanium and silicon, the complexing agent can coordinate titanium atoms to change the electronic environment of the titanium atoms, and under the synergistic cooperation of the substances, the activity and the stability of the catalyst are improved, the selectivity is also improved, and the occurrence of side reactions is effectively reduced.
2. The catalyst prepared by the method of the invention is hydrolysis resistant and has high activity. The catalyst is used for polyester polymerization, no stabilizer is needed to be added, the polymerization reaction rate can be improved, the dosage of the catalyst is reduced, and the prepared polyester has good hue.
Preparing yarns:
and (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and the other two kinds of fine-denier porous flame-retardant POY yarns through another zero roller without drafting, converging the full-dull FDY yarn at a roller, sequentially performing drafting, deforming, cooling, false twisting, network compounding, shaping and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 300m/min, the first hot box deformation temperature is 205 ℃, the second hot box shaping temperature is 185 ℃, and the drafting DR of the cation MOY filament between a zero roller and a one roller011.58, fine denier porous flame retardant POY yarnDrafting DR between zero roller and one roller020.99, main draft DR 1.05.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.7cN/dtex, the elongation at break is 23%, and the shrinkage in boiling water is 3.3%. The fabric woven by the fiber is soft and comfortable to the hands. Can weave fabrics with strong stereoscopic impression and distinct layers. The fabric has unique style, various colors and styles and good shading and flame-retardant effects.
Comparative example 1 (different key process parameters, DR)02Lower parameter)
Preparing cation MOY yarns by spinning, wherein the specification is 273dtex/48f, the breaking strength is 1.75 cn/dtex, and the breaking elongation is 175%; the full-dull FDY yarn is 167 dtex/72 f in specification, the breaking strength is 3.1cn/dtex, and the elongation at break is 27%; the fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 365 dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.05cn/dtex, and the elongation at break is 128 percent; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
And (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and the other two kinds of fine-denier porous flame-retardant POY yarns through another zero roller without drafting, converging the full-dull FDY yarn at a roller, sequentially performing drafting, deforming, cooling, false twisting, network compounding, shaping and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 400m/min, the first hot box deformation temperature is 220 ℃, the second hot box shaping temperature is 200 ℃, and the drafting DR of the cation MOY filament between a zero roller and a first roller01Is 1.60, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02At 0.96, the main draft DR was 1.08.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.4cN/dtex, the elongation at break is 25.5%, and the shrinkage in boiling water is 5.5%. Compared with the fiber obtained in the comparative example 1, the wool feeling is better, and the fabric woven by the fiber is soft in hand feeling, but the fabric is easy to fluff and pilling, the fabric surface is seriously shrunk, and the weaving efficiency is low.
Comparative example 2 (different key process parameters, DR)02Deviation of parameterHigh)
Preparing cation MOY yarns by spinning, wherein the specification is 273dtex/48f, the breaking strength is 1.75 cn/dtex, and the breaking elongation is 175%; the full-dull FDY yarn is 167 dtex/72 f in specification, the breaking strength is 3.1cn/dtex, and the elongation at break is 27%; the fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 365 dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.05cn/dtex, and the elongation at break is 128 percent; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
And (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and the other two kinds of fine-denier porous flame-retardant POY yarns through another zero roller without drafting, converging the full-dull FDY yarn at a roller, sequentially performing drafting, deforming, cooling, false twisting, network compounding, shaping and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 400m/min, the first hot box deformation temperature is 220 ℃, the second hot box shaping temperature is 200 ℃, and the drafting DR of the cation MOY filament between a zero roller and a first roller01Is 1.60, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02Is 1.05 and the main draft DR is 1.08.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.6cN/dtex, the elongation at break is 21.0%, and the shrinkage in boiling water is 3.0%. The fiber obtained in comparative example 1 had a reduced fluffy feeling, and the fabric woven from the fiber had a hard hand feeling.
Comparative example 3 (combination of different types of filaments, not dull FDY, according to the invention)
Preparing cation MOY yarns by spinning, wherein the specification is 273dtex/48f, the breaking strength is 1.75 cn/dtex, and the breaking elongation is 175%; the fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 365 dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.05cn/dtex, and the elongation at break is 128 percent; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
And (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and the fine-denier porous flame-retardant POY yarn of the other two specifications through another zero roller, converging the cation MOY yarn and the fine-denier porous flame-retardant POY yarn at a roller without drafting, sequentially performing drafting, deformation, cooling, false twisting, network compounding and sizing, and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 400m/min, the first hot box deformation temperature is 220 ℃, the second hot box shaping temperature is 200 ℃, and the drafting DR of the cation MOY filament between a zero roller and a first roller01Is 1.60, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02It was 0.985 and the main draft DR was 1.08.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.0cN/dtex, the elongation at break is 23.5%, and the shrinkage in boiling water is 3.0%. Compared with the fiber obtained in comparative example 1, the fiber has lower strength, is easy to break in post-production, has low weaving speed and has poor shading performance of the woven fabric.
Comparative example 4 (combination of different kinds of filaments different from the present invention, conventional MOY)
MOY yarn is prepared through spinning, the specification is 273dtex/48f, the breaking strength is 1.8 cn/dtex, and the breaking elongation is 170%; the full-dull FDY yarn is 167 dtex/72 f in specification, the breaking strength is 3.1cn/dtex, and the elongation at break is 27%; the fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specifications of 365 dtex/288 f and 142 dtex/144f respectively, the breaking strength of the fine-denier porous flame-retardant POY yarn is 2.05cn/dtex, and the elongation at break is 128 percent; the latter has a breaking strength of 2.03cn/dtex and an elongation at break of 125%.
The MOY yarn passes through a zero roller, is heated intermittently by a hot roller under the action of a reciprocating swing rod, passes through another zero roller with other two specifications of fine-denier porous flame-retardant POY yarns without being drawn, is converged at a roller with full-dull FDY yarns, and is subjected to drawing, deformation, cooling, false twisting, network compounding, shaping and winding sequentially to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 400m/min, the first hot box deformation temperature is 220 ℃, the second hot box shaping temperature is 200 ℃, and the drafting DR of the MOY filament between a zero roller and a first roller01Is 1.60, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02It was 0.985 and the main draft DR was 1.08.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.6cN/dtex, the elongation at break is 20.5%, and the shrinkage in boiling water is 3.5%. Compared with the fiber obtained in comparative example 1, the fabric woven by the fiber is soft and comfortable to the hands. But the fabric has single color and style and no layering sense.
COMPARATIVE EXAMPLE 5 (using a POY)
Preparing cation MOY yarns by spinning, wherein the specification is 273dtex/48f, the breaking strength is 1.75 cn/dtex, and the breaking elongation is 175%; the full-dull FDY yarn is 167 dtex/72 f in specification, the breaking strength is 3.1cn/dtex, and the elongation at break is 27%; the fine-denier porous flame-retardant POY yarn has the phosphorus content of 6600ppm, the specification of 142 dtex/144f, the breaking strength of 2.03cn/dtex and the elongation at break of 125 percent.
And (2) passing the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the action of a reciprocating swing rod, passing the cation MOY yarn and another fine-denier porous flame-retardant POY yarn through another zero roller without drafting, converging the full-dull FDY yarn at a roller, sequentially performing drafting, deformation, cooling, false twisting, network compounding and sizing, and winding to obtain the multifunctional fancy polyester yarn.
Wherein the processing speed is 400m/min, the first hot box deformation temperature is 220 ℃, the second hot box shaping temperature is 200 ℃, and the drafting DR of the cation MOY filament between a zero roller and a first roller01Is 1.60, the drafting DR of the fine denier porous flame-retardant POY yarn between a zero roller and a roller02It was 0.985 and the main draft DR was 1.08.
The physical indexes of the obtained fiber are as follows: the breaking strength is 2.5cN/dtex, the elongation at break is 20.5%, and the shrinkage in boiling water is 2.8%. Compared with the fiber obtained in the example 1, the fabric woven by the fiber has poor fluffy feeling and hard hand feeling, and the fabric woven by the fiber has poor layering feeling and weak flame retardant effect.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (8)

1. The multifunctional fancy terylene yarn is characterized in that: the composite fabric is formed by compounding four different spinning threads, namely, two fine-denier porous flame-retardant POY yarns with different specifications, a cationic MOY yarn and a full-dull FDY yarn; the full-dull FDY is a main trunk and is in a straight state, the cation MOY and the two fine-denier porous flame-retardant POY are wound on the full-dull FDY, the fine-denier porous flame-retardant POY is uniformly wound, and the cation MOY is wound at intervals in density;
the full-dull FDY yarn has the specification as follows: the breaking strength is 3.0-3.5 cN/dtex, and the elongation at break is 25-30%; the specification of the cation MOY filament is as follows: the breaking strength is 1.7-1.9cN/dtex, the elongation at break is 160-180%; the fine denier porous flame-retardant POY yarn is characterized by comprising the following specifications: phosphorus content 5000-.
2. The multifunctional fancy polyester yarn as claimed in claim 1, wherein the spinning thread is selected from one of the following pairs:
a. cationic MOY filaments: 273dtex/48f, breaking strength of 1.75 cn/dtex, elongation at break of 175%;
full dull FDY yarn: 167 dtex/72 f, breaking strength of 3.1cn/dtex, elongation at break of 27%;
fine denier porous flame retardant POY yarn: 365 dtex/288 f, breaking strength of 2.05cn/dtex, elongation at break of 128%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break of 125%;
b. cationic MOY filaments: 205dtex/48f, breaking strength of 1.70 cn/dtex and elongation at break of 180 percent;
full dull FDY yarn: 111 dtex/72 f, strength 3.3cn/dtex, elongation 25%;
fine denier porous flame retardant POY yarn: 270dtex/288 f, breaking strength of 2.08cn/dtex, elongation at break of 126%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break of 125%;
c. cationic MOY filaments: 102dtex/48f, breaking strength of 1.88 cn/dtex and elongation at break of 165%;
full dull FDY yarn: 83 dtex/72 f, breaking strength of 3.0cn/dtex, elongation at break of 28%;
fine denier porous flame retardant POY yarn: 175dtex/288 f, breaking strength of 2.1 cn/dtex, elongation at break of 122%; and 142 dtex/144f, breaking strength of 2.03cn/dtex, elongation at break 125%.
3. The method for preparing the multifunctional fancy polyester yarn as claimed in claim 1, comprising the steps of:
1) feeding the cation MOY yarn through a zero roller, intermittently heating the cation MOY yarn through a hot roller under the reciprocating swing action of a swing rod, and then feeding the cation MOY yarn into a roller;
2) meanwhile, pre-networking two fine-denier porous flame-retardant POY yarns, feeding the two fine-denier porous flame-retardant POY yarns through another zero roller, and then feeding the two fine-denier porous flame-retardant POY yarns into a roller;
3) the cation MOY filament, the fine denier porous flame-retardant POY filament and the full-dull FDY filament are converged at a roller; then sequentially carrying out drafting, deformation, cooling, false twisting, network compounding, shaping and winding to obtain the multifunctional terylene fancy yarn;
drafting ratio DR of cation MOY filament between zero roller and one roller011.55-1.65; drafting ratio DR of fine-denier porous flame-retardant POY (Pre-oriented yarn) between zero roller and one roller020.98-1.0 and a main draft DR of 1.05-1.1.
4. The method according to claim 3, wherein the deformation temperature is 200-220 ℃.
5. The method of claim 3, wherein the setting temperature is 180-200 ℃.
6. The method as claimed in claim 3, wherein the processing speed is 300-400 m/min.
7. The preparation method of claim 3, wherein the fine denier porous flame retardant POY yarn, the cationic MOY yarn and the full dull FDY yarn are prepared by spinning after twin-screw extrusion of polyester chips serving as raw materials, and the preparation method of the polyester chips comprises the following two methods:
the first method comprises the following steps:
preparing a silicon-titanium composite homogeneous catalyst: 5.9216g of sodium acetate and 2.0908g of sodium dodecyl benzene sulfonate are dissolved in 74.4g of ethylene glycol, then 20.2g of n-butyl titanate, 50.0g of ethyl orthosilicate and 27.6g of ethanol are added into the solution, the solution reacts for 2.5 hours at 85 ℃, after small molecules are removed by distillation, 12.6056g of citric acid monohydrate and 9.5352g of phenylphosphonic acid are added into the reaction system, the reaction is carried out for 2.5 hours at 85 ℃, and after the small molecules are removed by distillation, the liquid silicon-titanium composite homogeneous catalyst containing 1.4001% of titanium is prepared;
carrying out esterification reaction on terephthalic acid and ethylene glycol at 230-260 ℃, wherein the pressure is not more than 0.3MPa, and reacting for 1-3 h to obtain a prepolymer; then carrying out polycondensation reaction under the vacuum condition, wherein the reaction temperature is 270-290 ℃, the pressure is lower than 100Pa, and the reaction is carried out for 1-4 h to prepare modified polyester; drying and slicing to obtain polyester slices; the catalyst is a silicon-titanium composite homogeneous catalyst, and is added before or after the esterification reaction, and the dosage is 0.5-10 ppm calculated by polyester;
and the second method comprises the following steps:
preparation of the environment-friendly titanium composite catalyst for polyester: dissolving cetyl trimethyl ammonium bromide and sodium dodecyl benzene sulfonate in a molar ratio of 4:1 in 1000ml of deionized water to prepare a solution with a total concentration of 0.03mol/L, and standing for 24 hours after ultrasonic treatment for 0.5 hour; then adding 10ml of ammonia water, 250ml of ethanol and 250ml of diethyl ether, stirring vigorously for 0.5h, adding 30g of ethyl orthosilicate, and continuing stirring for 4h to complete the reaction; carrying out suction filtration on the reaction liquid, repeatedly washing a filter cake for 5 times by using ethanol and water, drying the filter cake in a 60 ℃ drying oven for 12 hours, then roasting the product in a 550 ℃ muffle furnace for 3 hours, and crushing the product to obtain mesoporous silica nano microspheres; then adding ethylene glycol, magnesium acetate and titanium tetrachloride into a three-neck flask in sequence, adding the mixture according to the molar ratio of 20:4:1, adding mesoporous silica nano microspheres according to the mass ratio of 5:1 to titanium tetrachloride, carrying out ultrasonic reaction for 4 hours under the protection of nitrogen, controlling the reaction temperature at 160 ℃, and stirring at the rotating speed of 120 r/min; standing for 24h after the reaction is finished, filtering to obtain a solid, repeatedly washing for 3 times by using ethanol and deionized water, and drying to obtain the environment-friendly titanium composite catalyst for polyester;
pulping terephthalic acid and ethylene glycol as raw materials, and sequentially carrying out esterification, pre-polycondensation and final polycondensation; wherein the esterification reaction temperature is controlled to be 220-270 ℃, the pressure is normal pressure-0.5 MPa, and the time is 1.5-5.5 h; the temperature of the pre-polycondensation reaction is controlled to be 240-270 ℃, the pressure is 1-101 KPa, and the time is 0.5-2.5 h; controlling the final polycondensation reaction temperature at 270-300 ℃, controlling the pressure at 30-300 Pa, and preparing polyester for 1-3.5 h; drying and slicing to obtain polyester slices; the catalyst is an environment-friendly titanium-based composite catalyst for polyester, and is added before or after esterification; based on the yield of the polyester, the addition mass of the catalyst is 2-50 ppm calculated by titanium element.
8. Use of the terylene multifunctional fancy yarn as claimed in claim 1 in the decoration of textiles.
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