CN108179500A - HMLS Polyester fibre spinning and twisting technique - Google Patents

HMLS Polyester fibre spinning and twisting technique Download PDF

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Publication number
CN108179500A
CN108179500A CN201711448458.3A CN201711448458A CN108179500A CN 108179500 A CN108179500 A CN 108179500A CN 201711448458 A CN201711448458 A CN 201711448458A CN 108179500 A CN108179500 A CN 108179500A
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spinning
silane
pet
obtains
weight
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施文东
祝建勋
黄振
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Anhui Dongjin Resource Regeneration Technology Co Ltd
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Anhui Dongjin Resource Regeneration Technology Co Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • C08G63/80—Solid-state polycondensation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • 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
    • D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
    • 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
    • D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
    • 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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Artificial Filaments (AREA)

Abstract

A kind of HMLS Polyester fibre spinning and twisting technique, step are as follows：(1) the recycled PET melt after tackified polymer is granulated, obtains regenerative PET particle, the antistatic agent for accounting for regenerative PET particle weight 0.2 1% is added in regenerative PET particle, in stirrer for mixing, obtains mixture；(2) mixture is subjected to pressurization extrusion, obtains PET melt, then PET melt is sent into manifold spinning after measuring pump-metered；(3) silk thread is sprayed from manifold spinning head, and dynamic analysis of spinning enters acetone or magnetized water coagulating bath solidification forming after the air layer of 10~50mm, using three pairs of hot-rolling drawing and settings, be made after spinning oil on oiling roller can direct fabrics silk thread；The present invention prepares the polyester of high intrinsic viscosity through thickening, solid phase using Pillar recovery bottle piece or the pure polyester fiber of recycling as raw material, through spinning and twisting technique optimization and the control of Fiber strength, prepares industrial HLMS terylene thread.

Description

HMLS Polyester fibre spinning and twisting technique
Technical field：
The present invention relates to resource regeneration technical fields, and in particular to a kind of HMLS Polyester fibre spinning and work of twisting thread Skill.
Background technology：
With the rapid development of global polyester industry, the problem of polyester industry faces a sternness：The source of raw material and useless The process problem of material.New available raw material resources are found, while how effectively to have become various countries using waste and old polyester plastics material The strategic objective faced.
It is the main path of the current polyester recycling in China using Pillar recovery bottle piece production regenerated fiber, however this A little fibers are mainly the cotton of some low sides, filled-type product, since the expansion and homogeneity of production capacity are serious, regenerated fiber enterprise Industry is in meagre profit state.Therefore high-endization of regenerated fiber, differential just seem necessary.At present, although there are many country Mechanism and enterprise have carried out Pillar recovery regeneration spinning technique correlative study, but the regeneration industrial filament of China's Pillar recovery Industrialization and its differentiation also have larger gap compared with developed countries, and the variety development of manufacturing enterprise is mostly based on short fibre, wound New indifferent, kind limitation is big.Research to Pillar recovery regeneration industrial filament new product development key technology, not enough Deeply.
Country's passenger car annual output is up to 17,000,000 or more at present, if with 6 times of calculating that ownership is yield, passenger car can Up to 100,000,000 or more.The basic performance of passenger car radial-ply tyre with the obvious advantage, and high mode and low mode type polyester industrial yarn (HMLS) be radial-ply tyre preferred curtain cloth material, have elongation strain is small, good stability of the dimension, modulus are high, percent thermal shrinkage and The features such as hysteresis loss rate is small, high comprehensive performance.The tire endurance made of industrial HLMS terylene thread, deformation are small, Lateral rigidity is higher than polyamide fibre tire, thus it is good to manipulate driving stability；Heat resistance, heat aging, thermal stability and flat spot phenomenon are equal Better than polyamide fibre tire, there is excellent riding performance.According to the statistic of newest high mode and low mode type polyester industrial yarn domestic production capacity Aggregated capacity is about 100,000 tons, and domestic demand is more than 200,000 tons；As the development and following people of automobile industry are to tire The raising of performance requirement, due to the backwardness of technical equipment, some will be eliminated in existing HMLS manufacturing enterprises.It is practical to lack Mouth will be amplified.
The year consumption of two big main application fields of polyethylene terephthalate (PET), polyester bottles and polyester fiber Amount is more than 20,000,000 tons, if the waste not recycling generated after use, both seriously pollutes environment, also results in resource wave Take.In recent years, the technology using waste PET bottle piece spinning Regenerated Polyester Staple Fiber is quite ripe, the technical merit of spinning filament yarn Also in constantly improve, but Related product is mainly used in bottom end field, and added value is limited, and enterprise is in meagre profit and even loses operation State, enthusiasm for production are limited.
The application prepares HMLS Polyester fiber using Pillar recovery bottle piece or the pure polyester fiber of recycling as raw material, same When have that initial modulus is high, percent thermal shrinkage is low, endurance, the excellent properties such as water-fast.It is mainly used in meridian warp, V-arrangement Polyester industrial yarn necessary to the auto parts machineries such as band, sebific duct enhances framework material.The technical difficulty of product is big, but added value height, Market has openings is big.The application plan opens up the new way of a recycling waste and old polyester.
Invention content：
The technical problems to be solved by the invention are to provide a kind of HMLS Polyester fibre spinning and twisting technique, make Standby product is provided simultaneously with the excellent properties such as low initial modulus height, percent thermal shrinkage, endurance, water-fast.
The technical problems to be solved by the invention are realized using following technical solution：
A kind of HMLS Polyester fibre spinning and twisting technique, step are as follows：
(1) the recycled PET melt after tackified polymer is granulated, obtains regenerative PET particle, in regenerative PET particle The antistatic agent for accounting for regenerative PET particle weight 0.2-1% is added in, in stirrer for mixing, obtains mixture；
(2) mixture is subjected to pressurization extrusion, obtains PET melt, then PET melt is sent into spinning after measuring pump-metered Case spinning；
(3) silk thread is sprayed from manifold spinning head, and dynamic analysis of spinning enters acetone or magnetic after the air layer of 10~50mm Change water coagulating bath solidification forming, using three pairs of hot-rolling drawing and settings, being made after spinning oil on oiling roller can direct fabrics Silk thread.
Further, the preparation method of above-mentioned antistatic agent is：By the aliphatic amine polyoxyethylene ether of 40~60 parts by weight, 10 The Polyethylene Glycol Bisglycidyl Ether of~18 parts by weight, 3~8 parts by weight neopelex be uniformly mixed, successively slowly The silane coupling agent of 2~4 parts by weight and the polyurethanes wetting dispersing agent of 0.2~0.8 parts by weight are added in, after feeding intake, often Temperature 20~30min of stirring, obtains antistatic agent.
In above-mentioned antistatic agent ingredient, aliphatic amine polyoxyethylene ether is soluble easily in water as common antistatic composition, has Excellent level dyeing, diffusion, can improve the strength to spin and rub resistance power；Polyethylene Glycol Bisglycidyl Ether changes as common Property agent can improve the tensile strength and elongation at break of fiber；Matching surface activating agent neopelex and performance Excellent polyurethanes wetting dispersing agent, wetting and dispersing ensure that antistatic property, improve the toughness of polyester fiber.
Further, the silane coupling agent is vinyltriacetoxy silane, three tert-butyl peroxide silicon of vinyl One or more groups in alkane, anilinomethyl trimethoxy silane, gamma-methyl allyl acyloxypropyl methyl dimethoxysilane It closes.
The method of above-mentioned tackified polymer is as follows：
S1. recycled PET is crushed into (such as PET bottle piece or PET fiber), obtains PET particles, set in low-temperature cold wind drying PET particles are dried processing, 45-50 degrees Celsius of temperature, time 40-55 minute in standby；Dry reclaimed materials surface irregularities It comes off；
S2. dried PET particles are sent into decomposing pool to impregnate, time control was at 1.5-2 hours, 30-38 DEG C of temperature；By It is more in the pet sheet face impurity content of recycling, immersion removal of impurities is carried out after the drying, and effect is more；And tradition is carried out by cleaning equipment Cleaning, can not remove the slightly solubility impurity on surface, unfavorable to the raising of final product quality；
S3. the recycled PET after immersion is put into reaction kettle together with the clear water of immersion, temperature in the kettle is controlled in 60- 85 DEG C, kettle pressure 3-10MPa is kept for 10-20 minutes；Purpose is that the slightly solubility substance of polyethylene surface is made to be detached from polyethylene, should Method is working experience gained of the inventor according to reality, after weight ratio experiment by parameter selection many times and many times One group of obtained most effective data area thoroughly solves the contaminant problems of recycled PET；
S4. the recycled PET in reaction kettle is poured out, and dried, be then fed into dry setting and processing is dried；Then Disc rotor formula reactor or cage-like finishers are sent into, heating melts PET particles, obtains PET melt, then puts into thickening nucleation Agent stirs evenly, 240-260 degrees Celsius of temperature, inflated with nitrogen heat preservation thickening 40 minutes；
Wherein thickening nucleating agent is made of following components in percentage by weight：Ethylene glycol 60%, antimony oxide 20%, oxidation Germanium 20%；The input amount of wherein thickening nucleating agent accounts for the 2%-5% of PET melt weight；
Wherein the viscosified formulations of recycled PET melt and technique are important technical links, determine adding for the chain extenders such as ethylene glycol Enter the type and dosage of the catalyst such as amount and antimony system, germanium system, increased using Ubbelohde viscometer, gel permeation chromatography (GPC) test The molecular weight and molecular weight distribution of viscous PET, makes the intrinsic viscosity of PET reach more than 1.0dL/g.
Above-mentioned drying is carried out in vacuum cold wind drier, 45-55 DEG C of drying temperature；Conventional method is straight after drying Granulation is connect, comminutor thus can be made to generate a large amount of flue gases, the environment in workshop is impacted；And the application passes through cold air drying Afterwards, solve the problems, such as that flue gas diffuses in granulation process, smoke yields are few, no bad smell.
Further, action is kept stirring while immersion in above-mentioned steps S2.
Further, mixing speed is 150-300 revs/min in above-mentioned S2.
The application silk thread product the key technical indexes is as follows：
1) PET inherent viscosities：≥1.0±0.05dL/g；
2) fracture strength：≥7.0CN/dtex
3) the fracture strength coefficient of variation：≤ 1.6%
4) elongation at specified load (4CN/dex)：≤ 6.0%
5) it is xeothermic to shrink (160 DEG C)：≤ 3.5%
6) Dimensional Stability Index：≤9.0
7) surface resistivity/Ω：5.17×105。
The beneficial effects of the invention are as follows：The present invention is using Pillar recovery bottle piece or recycles pure polyester fiber as raw material, through viscosifying, Solid phase prepares the polyester of high intrinsic viscosity, through spinning and twisting technique optimization and the control of Fiber strength, prepares Industrial HLMS terylene thread.
Specific embodiment：
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is further explained.
Embodiment 1
A kind of HMLS Polyester fibre spinning and twisting technique, step are as follows：
(1) the recycled PET melt after tackified polymer is granulated, obtains regenerative PET particle, in regenerative PET particle The antistatic agent for accounting for regenerative PET particle weight 0.5% is added in, in stirrer for mixing, obtains mixture；
(2) mixture is subjected to pressurization extrusion, obtains PET melt, then PET melt is sent into spinning after measuring pump-metered Case spinning；
(3) silk thread is sprayed from manifold spinning head, and dynamic analysis of spinning enters acetone or magnetic after the air layer of 10~50mm Change water coagulating bath solidification forming, using three pairs of hot-rolling drawing and settings, being made after spinning oil on oiling roller can direct fabrics Silk thread.
Further, the preparation method of above-mentioned antistatic agent is：By the aliphatic amine polyoxyethylene ether of 40~60 parts by weight, 10 The Polyethylene Glycol Bisglycidyl Ether of~18 parts by weight, 3~8 parts by weight neopelex be uniformly mixed, successively slowly The silane coupling agent of 2~4 parts by weight and the polyurethanes wetting dispersing agent of 0.2~0.8 parts by weight are added in, after feeding intake, often Temperature 20~30min of stirring, obtains antistatic agent.
In above-mentioned antistatic agent ingredient, aliphatic amine polyoxyethylene ether is soluble easily in water as common antistatic composition, has Excellent level dyeing, diffusion, can improve the strength to spin and rub resistance power；Polyethylene Glycol Bisglycidyl Ether changes as common Property agent can improve the tensile strength and elongation at break of fiber；Matching surface activating agent neopelex and performance Excellent polyurethanes wetting dispersing agent, wetting and dispersing ensure that antistatic property, improve the toughness of polyester fiber.
Further, the silane coupling agent is anilinomethyl trimethoxy silane.
The method of above-mentioned tackified polymer is as follows：
S1. recycled PET is crushed into (such as PET bottle piece or PET fiber), obtains PET particles, set in low-temperature cold wind drying PET particles are dried processing, 45-50 degrees Celsius of temperature, time 40-55 minute in standby；Dry reclaimed materials surface irregularities It comes off；
S2. dried PET particles are sent into decomposing pool to impregnate, time control was at 1.5-2 hours, 30-38 DEG C of temperature；By It is more in the pet sheet face impurity content of recycling, immersion removal of impurities is carried out after the drying, and effect is more；And tradition is carried out by cleaning equipment Cleaning, can not remove the slightly solubility impurity on surface, unfavorable to the raising of final product quality；
S3. the recycled PET after immersion is put into reaction kettle together with the clear water of immersion, temperature in the kettle is controlled in 60- 85 DEG C, kettle pressure 3-10MPa is kept for 10-20 minutes；Purpose is that the slightly solubility substance of polyethylene surface is made to be detached from polyethylene, should Method is working experience gained of the inventor according to reality, after weight ratio experiment by parameter selection many times and many times One group of obtained most effective data area thoroughly solves the contaminant problems of recycled PET；
S4. the recycled PET in reaction kettle is poured out, and dried, be then fed into dry setting and processing is dried；Then Disc rotor formula reactor or cage-like finishers are sent into, heating melts PET particles, obtains PET melt, then puts into thickening nucleation Agent stirs evenly, 240-260 degrees Celsius of temperature, inflated with nitrogen heat preservation thickening 40 minutes；
Wherein thickening nucleating agent is made of following components in percentage by weight：Ethylene glycol 60%, antimony oxide 20%, oxidation Germanium 20%；The input amount of wherein thickening nucleating agent accounts for the 2%-5% of PET melt weight；
Wherein the viscosified formulations of recycled PET melt and technique are important technical links, determine adding for the chain extenders such as ethylene glycol Enter the type and dosage of the catalyst such as amount and antimony system, germanium system, increased using Ubbelohde viscometer, gel permeation chromatography (GPC) test The molecular weight and molecular weight distribution of viscous PET, makes the intrinsic viscosity of PET reach more than 1.0dL/g.
Above-mentioned drying is carried out in vacuum cold wind drier, 45-55 DEG C of drying temperature；Conventional method is straight after drying Granulation is connect, comminutor thus can be made to generate a large amount of flue gases, the environment in workshop is impacted；And the application passes through cold air drying Afterwards, solve the problems, such as that flue gas diffuses in granulation process, smoke yields are few, no bad smell.
Further, action is kept stirring while immersion in above-mentioned steps S2.
Further, mixing speed is 150-300 revs/min in above-mentioned S2.
The application silk thread product the key technical indexes is as follows：
1) PET inherent viscosities：≥1.0±0.05dL/g；
2) fracture strength：≥7.0CN/dtex
3) the fracture strength coefficient of variation：≤ 1.6%
4) elongation at specified load (4CN/dex)：≤ 6.0%
5) it is xeothermic to shrink (160 DEG C)：≤ 3.5%
6) Dimensional Stability Index：≤9.0
7) surface resistivity/Ω：5.17×105。
Embodiment 2
A kind of HMLS Polyester fibre spinning and twisting technique, step are as follows：
(1) the recycled PET melt after tackified polymer is granulated, obtains regenerative PET particle, in regenerative PET particle The antistatic agent for accounting for regenerative PET particle weight 0.8% is added in, in stirrer for mixing, obtains mixture；
(2) mixture is subjected to pressurization extrusion, obtains PET melt, then PET melt is sent into spinning after measuring pump-metered Case spinning；
(3) silk thread is sprayed from manifold spinning head, and dynamic analysis of spinning enters acetone or magnetic after the air layer of 10~50mm Change water coagulating bath solidification forming, using three pairs of hot-rolling drawing and settings, being made after spinning oil on oiling roller can direct fabrics Silk thread.
Further, the preparation method of above-mentioned antistatic agent is：By the aliphatic amine polyoxyethylene ether of 40~60 parts by weight, 10 The Polyethylene Glycol Bisglycidyl Ether of~18 parts by weight, 3~8 parts by weight neopelex be uniformly mixed, successively slowly The silane coupling agent of 2~4 parts by weight and the polyurethanes wetting dispersing agent of 0.2~0.8 parts by weight are added in, after feeding intake, often Temperature 20~30min of stirring, obtains antistatic agent.
In above-mentioned antistatic agent ingredient, aliphatic amine polyoxyethylene ether is soluble easily in water as common antistatic composition, has Excellent level dyeing, diffusion, can improve the strength to spin and rub resistance power；Polyethylene Glycol Bisglycidyl Ether changes as common Property agent can improve the tensile strength and elongation at break of fiber；Matching surface activating agent neopelex and performance Excellent polyurethanes wetting dispersing agent, wetting and dispersing ensure that antistatic property, improve the toughness of polyester fiber.
Further, the silane coupling agent is vinyltriacetoxy silane.
The method of above-mentioned tackified polymer is as follows：
S1. recycled PET is crushed into (such as PET bottle piece or PET fiber), obtains PET particles, set in low-temperature cold wind drying PET particles are dried processing, 45-50 degrees Celsius of temperature, time 40-55 minute in standby；Dry reclaimed materials surface irregularities It comes off；
S2. dried PET particles are sent into decomposing pool to impregnate, time control was at 1.5-2 hours, 30-38 DEG C of temperature；By It is more in the pet sheet face impurity content of recycling, immersion removal of impurities is carried out after the drying, and effect is more；And tradition is carried out by cleaning equipment Cleaning, can not remove the slightly solubility impurity on surface, unfavorable to the raising of final product quality；
S3. the recycled PET after immersion is put into reaction kettle together with the clear water of immersion, temperature in the kettle is controlled in 60- 85 DEG C, kettle pressure 3-10MPa is kept for 10-20 minutes；Purpose is that the slightly solubility substance of polyethylene surface is made to be detached from polyethylene, should Method is working experience gained of the inventor according to reality, after weight ratio experiment by parameter selection many times and many times One group of obtained most effective data area thoroughly solves the contaminant problems of recycled PET；
S4. the recycled PET in reaction kettle is poured out, and dried, be then fed into dry setting and processing is dried；Then Disc rotor formula reactor or cage-like finishers are sent into, heating melts PET particles, obtains PET melt, then puts into thickening nucleation Agent stirs evenly, 240-260 degrees Celsius of temperature, inflated with nitrogen heat preservation thickening 40 minutes；
Wherein thickening nucleating agent is made of following components in percentage by weight：Ethylene glycol 60%, antimony oxide 20%, oxidation Germanium 20%；The input amount of wherein thickening nucleating agent accounts for the 2%-5% of PET melt weight；
Wherein the viscosified formulations of recycled PET melt and technique are important technical links, determine adding for the chain extenders such as ethylene glycol Enter the type and dosage of the catalyst such as amount and antimony system, germanium system, increased using Ubbelohde viscometer, gel permeation chromatography (GPC) test The molecular weight and molecular weight distribution of viscous PET, makes the intrinsic viscosity of PET reach more than 1.0dL/g.
Above-mentioned drying is carried out in vacuum cold wind drier, 45-55 DEG C of drying temperature；Conventional method is straight after drying Granulation is connect, comminutor thus can be made to generate a large amount of flue gases, the environment in workshop is impacted；And the application passes through cold air drying Afterwards, solve the problems, such as that flue gas diffuses in granulation process, smoke yields are few, no bad smell.
Further, action is kept stirring while immersion in above-mentioned steps S2.
Further, mixing speed is 150-300 revs/min in above-mentioned S2.
The application silk thread product the key technical indexes is as follows：
1) PET inherent viscosities：≥1.0±0.05dL/g；
2) fracture strength：≥7.0CN/dtex
3) the fracture strength coefficient of variation：≤ 1.6%
4) elongation at specified load (4CN/dex)：≤ 6.0%
5) it is xeothermic to shrink (160 DEG C)：≤ 3.5%
6) Dimensional Stability Index：≤9.0
7) surface resistivity/Ω：5.17×105。
As seen from the above, dacron fabric surface resistivity of the present invention is larger, and antistatic property is lasting and excellent.Tool There are excellent dry fracture strength, wet breaking strength, wet modulus, heat-proof combustion-resistant performance, be suitble to large-scale industrial production.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (6)

1. a kind of HMLS Polyester fibre spinning and twisting technique, it is characterised in that step is as follows：
(1) the recycled PET melt after tackified polymer is granulated, obtains regenerative PET particle, added in regenerative PET particle The antistatic agent of regenerative PET particle weight 0.2-1% is accounted for, in stirrer for mixing, obtains mixture；
(2) mixture is subjected to pressurization extrusion, obtains PET melt, then PET melt is sent into manifold spinning after measuring pump-metered Silk；
(3) silk thread is sprayed from manifold spinning head, and dynamic analysis of spinning enters acetone or magnetized water after the air layer of 10~50mm Coagulating bath solidification forming, using three pairs of hot-rolling drawing and settings, be made after spinning oil on oiling roller can direct fabrics silk Line；
The preparation method of above-mentioned antistatic agent is：By the aliphatic amine polyoxyethylene ether of 40~60 parts by weight, 10~18 parts by weight Polyethylene Glycol Bisglycidyl Ether, 3~8 parts by weight neopelex be uniformly mixed, be slowly added to 2~4 weight successively The silane coupling agent of part and the polyurethanes wetting dispersing agent of 0.2~0.8 parts by weight, after feeding intake, stirring at normal temperature 20~ 30min obtains antistatic agent.
2. HMLS Polyester fibre spinning according to claim 1 and twisting technique, it is characterised in that：The silane is even Connection agent is vinyltriacetoxy silane.
3. HMLS Polyester fibre spinning according to claim 1 and twisting technique, it is characterised in that：The silane is even Connection agent is three tert-butyl peroxide silane of vinyl.
4. HMLS Polyester fibre spinning according to claim 1 and twisting technique, it is characterised in that：The silane is even Connection agent is anilinomethyl trimethoxy silane.
5. HMLS Polyester fibre spinning according to claim 1 and twisting technique, it is characterised in that：The silane is even Connection agent is gamma-methyl allyl acyloxypropyl methyl dimethoxysilane.
6. HMLS Polyester fibre spinning according to claim 1 and twisting technique, it is characterised in that：The silane is even Connection agent for vinyltriacetoxy silane, three tert-butyl peroxide silane of vinyl, anilinomethyl trimethoxy silane, γ- One or more combinations in methacryloxypropyl methyl dimethoxysilane.
CN201711448458.3A 2017-12-27 2017-12-27 HMLS Polyester fibre spinning and twisting technique Pending CN108179500A (en)

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CN111088545A (en) * 2019-12-12 2020-05-01 浙江恒澜科技有限公司 Preparation method of cationic dye dyeable regenerated cotton-like polyester fiber

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CN101694040A (en) * 2009-09-10 2010-04-14 梁本树 Process for producing polyester roofing asphalt felt by using PET bottle flakes
CN101724980A (en) * 2009-12-03 2010-06-09 梁本树 Process for producing polyester geotextile with raw material of PET bottle flakes
CN103088454A (en) * 2013-02-04 2013-05-08 浙江古纤道新材料股份有限公司 Production method of melt direct spinning high-modulus low-shrinkage polyester industrial filament
CN106245155A (en) * 2016-08-02 2016-12-21 厦门安踏体育用品有限公司 Anti-static polyester fiber and manufacture method thereof, and antistatic compounds microgranule

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CN85107888A (en) * 1985-10-15 1986-09-03 上海合成纤维研究所 The manufacture method of durable anti-static polyester resin and fiber
CN101694040A (en) * 2009-09-10 2010-04-14 梁本树 Process for producing polyester roofing asphalt felt by using PET bottle flakes
CN101724980A (en) * 2009-12-03 2010-06-09 梁本树 Process for producing polyester geotextile with raw material of PET bottle flakes
CN103088454A (en) * 2013-02-04 2013-05-08 浙江古纤道新材料股份有限公司 Production method of melt direct spinning high-modulus low-shrinkage polyester industrial filament
CN106245155A (en) * 2016-08-02 2016-12-21 厦门安踏体育用品有限公司 Anti-static polyester fiber and manufacture method thereof, and antistatic compounds microgranule

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Publication number Priority date Publication date Assignee Title
CN111088545A (en) * 2019-12-12 2020-05-01 浙江恒澜科技有限公司 Preparation method of cationic dye dyeable regenerated cotton-like polyester fiber
CN111088545B (en) * 2019-12-12 2022-05-06 浙江恒逸石化研究院有限公司 Preparation method of cationic dye dyeable regenerated cotton-like polyester fiber

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