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CN116876102B - Wear-resistant PET monofilament and preparation method thereof - Google Patents

Wear-resistant PET monofilament and preparation method thereof Download PDF

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Publication number
CN116876102B
CN116876102B CN202311074187.5A CN202311074187A CN116876102B CN 116876102 B CN116876102 B CN 116876102B CN 202311074187 A CN202311074187 A CN 202311074187A CN 116876102 B CN116876102 B CN 116876102B
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parts
wear
monofilament
resistant
pet
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CN116876102A (en
Inventor
黄兴
杨凤凯
冯猛
梁结嫦
廖云飞
周明
符达军
左建东
罗超云
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Shenzhen Jdd Tech New Material Co ltd
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Shenzhen Jdd Tech New Material 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
    • 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
    • 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
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/35—Abrasion, pilling or fibrillation resistance

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention discloses a wear-resistant PET monofilament and a preparation method thereof, and belongs to the technical field of polyester fibers. The raw materials for preparing the wear-resistant PET monofilament comprise the following components in parts by weight: 80-90 parts of PET resin, 0.3-5 parts of chain extender and 10-20 parts of wear-resistant master batch. According to the wear-resistant PET monofilament, the strength of the polymer mixture is enhanced by adding the wear-resistant master batch with specific components and proportions, so that the shape stability of the monofilament prepared from the wear-resistant PET monofilament is greatly improved, and the viscosity can be improved again by adding the chain extender, so that the wear resistance is greatly improved. According to the preparation method of the wear-resistant PET monofilament, the PET monofilament is coated with crosslinked and solidified polyurethane to form the high-strength elastic layer, so that the wear resistance of the PET monofilament is improved.

Description

Wear-resistant PET monofilament and preparation method thereof
Technical Field
The invention belongs to the technical field of polyester fibers, and particularly relates to a wear-resistant PET monofilament and a preparation method thereof.
Background
It is known that polyester monofilaments are slightly inferior to polyamide monofilaments such as nylon 66, but polyamide fibers tend to be photodegradation and yellowing, and are not suitable for use in outdoor severe applications. Accordingly, various studies for improving the abrasion resistance of polyester fibers are being conducted. The wear resistance of the polyamide is achieved by various innovative modifications of the polyethylene terephthalate filaments.
The published patent CN109735933A is used for the preparation method of the terylene industrial yarn of the safety belt, and the terylene industrial yarn for the safety belt is prepared by carrying out solid phase polycondensation tackifying, melting, metering, extrusion, cooling, oiling, stretching, heat setting and winding on the modified polyester melt.
DE102004041755A1 discloses fibers comprising spherical particles of aliphatic-aromatic polyesters and inorganic oxides having an average diameter of 100nm or less. It is disclosed in this document that the abrasion resistance of the fibers described therein can be improved by the addition of polycarbonate.
The invention of CN108239375A discloses a master batch of wear-resistant fibers and wear-resistant fibers prepared by using the master batch. The masterbatch comprises about 90 to 99.5 parts by weight of polyester, about 0.4 to 9.9 parts by weight of solid wear modifier, and about 0.1 to 1.5 parts by weight of coupling agent. The solid state wear resistant modification comprises polydimethylsiloxane or a derivative thereof.
Patent CN106232883a discloses a polyester monofilament comprising the following components: a) 60 to 85 weight percent of a polyester raw material selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyethylene terephthalate modified with dicarboxylic acids, polyethylene naphthalate modified with dicarboxylic acids, or a combination thereof, b) 14.4 to 30 weight percent of a thermoplastic elastomer block copolymer, c) 0.05 to 10 weight percent of a polycarbonate, and d) 0.1 to 10 weight percent of a carbodiimide stabilizer.
CN103276471a discloses a preparation method of wear-resistant monofilament for papermaking, which adopts high-viscosity PET as a base material, uses LCPA950 to increase the strength of the monofilament, and simultaneously adds PBT to increase the flexibility of single thread, thereby achieving the purpose of improving the strength and wear resistance of the preparation method of wear-resistant monofilament for papermaking net.
CN102251315A discloses a wear-resistant monofilament which is prepared by adding carbonate after titanate treatment into high-viscosity polyester slices, preparing modified master batch by modifying bisphenol a epoxy resin, and adding the modified master batch into PET resin for spinning.
The invention discloses a wear-resistant PET composite material and a preparation method thereof, wherein the wear-resistant PET composite material consists of PET, a wear-resistant material, an antioxidant and a lubricant, nano silicon nitride, polytetrafluoroethylene, a coupling agent A-151 and mica powder are mixed to prepare the wear-resistant material, and the wear-resistant material is added into the PET composite material to reduce the friction coefficient of the PET composite material so as to improve the wear resistance of the PET composite material.
The invention provides a wear-resistant fabric with monofilaments, which belongs to the field of special textile fabrics and comprises the following components in percentage by weight: a) A polyester raw material selected from the group consisting of poly (trimethylene terephthalate), poly (trimethylene naphthalate), dicarboxylic acid modified poly (trimethylene terephthalate), dicarboxylic acid modified poly (trimethylene naphthalate), and combinations thereof; b) A thermoplastic elastomer block copolymer; c) Silicone modified polyacrylates; and d) a carbodiimide stabilizer selected from DIC, EDC.
Disclosure of Invention
In all the above-mentioned published patents and the technical proposal of improving wear resistance, there is no disclosure of a formula for improving PET wear resistance by the synergistic effect of a nucleating agent and diallyl anhydride-acetyl acetate, nor a modification method for improving wear resistance of common PET monofilaments by coating cross-linked and cured polyurethane to form a high-strength elastic layer.
The first aspect of the invention discloses a wear-resistant PET monofilament, which is prepared from the following raw materials in parts by weight:
80-90 parts of PET resin, 0.3-5 parts of chain extender and 10-20 parts of wear-resistant master batch.
In some embodiments of the invention, the raw materials for preparing the wear-resistant master batch comprise PET resin, diallyl anhydride-acetyl acetate copolymer and long-chain linear saturated carboxylic acid sodium salt with carbon chain length of C28-C32 as main components.
In some embodiments of the present invention, the raw materials for the preparation of the wear-resistant masterbatch include the following components in parts by weight:
75-90 parts of PET resin, 5-10 parts of diallyl anhydride-acetyl acetate copolymer and 10-15 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
In some embodiments of the present invention, the abrasion resistant PET filaments are surface coated with a polyurethane composite solution and cured at elevated temperatures to form a high strength high elastic monofilament surface.
In some embodiments of the present invention, the polyurethane composite solution is prepared from the following raw materials:
The water is used as the water source,
The polyurethane is used as a base material for the polyurethane,
At least one of a trimer blocked HDI isocyanic acid cross-linking agent or dimethyl thiotoluene diamine or 2, 4-diamine-3, 5-dimethyl thiotoluene,
And polycarbodiimides.
In some embodiments of the present invention, the preparation raw materials of the polyurethane composite solution include the following components in parts by weight:
70-80 parts of water, 20-30 parts of polyurethane, 0.2-5 parts of at least one of a trimer blocked HDI isocyanate cross-linking agent or a dimethyl thiotoluene diamine or 2, 4-diamino-3, 5-dimethyl thiotoluene and 0.5-1.7 parts of polycarbodiimide.
In some embodiments of the invention, the PET resin is a polyethylene terephthalate homopolymer.
In some embodiments of the invention, the polyethylene terephthalate homopolymer has a solution viscosity IV in dichloroacetic acid at 25℃of greater than 0.80dl/g, preferably from 0.80 to 1.1dl/g.
In some embodiments of the invention, the chain extender is ECO-1120.
In some embodiments of the invention, the diallyl anhydride-acetyl acetate copolymer is PX520.
In some embodiments of the invention, the long chain linear saturated carboxylic acid sodium salt with carbon chain length C28-C32 as the main component is Licom NaV101.
In some embodiments of the invention, the polyurethane is MR-817A.
A second aspect of the present invention is to disclose the method for preparing the abrasion-resistant PET monofilament according to the first aspect, comprising the steps of:
s01, mixing PET resin, a chain extender and an abrasion-resistant master batch to prepare monofilaments;
s02, moving the monofilament obtained in the step S01 through a liquid tank containing polyurethane composite solution, coating the polyurethane composite solution on the surface, and crosslinking and curing for 0.5-5S (seconds) at 150-240 ℃ to form the surface of the high-strength high-elastic monofilament, thereby obtaining the wear-resistant PET monofilament.
In some embodiments of the invention, in S02, the moving speed is 0.5-4m/S (meters/second).
In some embodiments of the present invention, the determination of the speed at which the filaments of step (2) move through a bath of polyurethane composite solution is made by:
S11, taking monofilaments of an unremoved liquid tank with the same diameter, passing through the liquid tank containing the polyurethane composite solution at different speeds v, and crosslinking and solidifying to obtain wear-resistant monofilaments;
s12, measuring the diameters d of the monofilaments of the non-passing liquid tank and the wear-resistant monofilaments obtained after treatment at a fixed temperature t and a fixed humidity h, obtaining a diameter change value delta d before and after, and establishing a regression curve between the speed of the liquid tank filled with the polyurethane composite solution and the diameter change value delta d;
Δd＝f(t，h，v)；
S13, measuring wear resistance of the non-passing monofilaments of the liquid tank and the wear-resistant monofilaments obtained after treatment, obtaining a front wear resistance change value delta AR and a rear wear resistance change value delta AR, and establishing a regression curve between the diameter change value delta d and the wear resistance change value delta AR;
ΔAR＝f(t，h，Δd)；
S14, converting to obtain a regression curve between the speed of a liquid tank filled with the polyurethane composite solution and the wear resistance change value delta AR; the regression curve is as follows:
Wherein k 1、k2、k3 and k 4 are weight coefficients, a is a constant, t is a real-time temperature, t s is a standard temperature, the value is 25 ℃, h is a real-time humidity, h s is a standard humidity, d is a monofilament diameter, d s is a standard monofilament diameter, the value is 0.8mm, v is a speed passing through a liquid tank containing a polyurethane composite solution, v s is a standard speed passing through the liquid tank containing the polyurethane composite solution, and the value is 1.5m/s;
Wherein k1, k2, k3 and k4 respectively take values of 0.11-0.12, 0.1, 15-25, a takes values of 2.5-3.5, t takes values of 20-35 ℃, h takes values of 30-70%, d takes values of 0.2-1.5mm, v takes values of 0.3-4m/s;
S15, determining the proper speed of the polyurethane composite solution passing through the liquid tank according to the requirement of the wear resistance.
The invention has the beneficial effects that:
According to the wear-resistant PET monofilament, the strength of the polymer mixture is enhanced by adding the wear-resistant master batch with specific components and proportions, so that the shape stability of the monofilament prepared from the wear-resistant PET monofilament is greatly improved, and the viscosity can be improved again by adding the chain extender, so that the wear resistance is greatly improved.
The invention uses polyethylene terephthalate raw material, chain extender and wear-resistant master batch as components, wherein the raw material provides the monofilament with the above performance requirements after spinning, stretching and optional relaxation through the synergistic action of the chain extender and the wear-resistant master batch.
The combination of the components of the polyethylene terephthalate raw material, the chain extender and the wear-resistant master batch used in the invention not only endows the yarn with excellent wear resistance, but also endows the yarn with good textile technical performance and high shape stability. In particular, the abrasion resistance is particularly good, which is unexpected to those skilled in the art.
According to the preparation method of the wear-resistant PET monofilament, the PET monofilament is coated with crosslinked and solidified polyurethane to form the high-strength elastic layer, so that the wear resistance of the PET monofilament is improved.
According to the preparation method of the wear-resistant PET monofilament, the monofilament moves through the determination method of the speed of the liquid tank containing the polyurethane composite solution, the change of wear resistance is well predicted through the speed of the liquid tank containing the polyurethane composite solution, and the method can be used for guiding the determination of the speed under different wear resistance requirements in practice.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
The examples and comparative examples are parallel runs of the same components, component contents, preparation steps, preparation parameters, unless otherwise specified. The raw materials are all commercial products, wherein the PET resin is polyethylene terephthalate homopolymer, the brand is constant force T101, and the solution viscosity IV value in dichloroacetic acid at 25 ℃ is 1.1dl/g; the chain extender is ECO-1120; the diallyl anhydride-acetyl acetate copolymer is brand PX520; the long-chain linear saturated carboxylic acid sodium salt with the carbon chain length of C28-C32 as a main component is Licom NaV101; the polyurethane brand is MR-817A. The preparation method of the wear-resistant master batch comprises the steps of mixing the raw materials, extruding by a screw, and granulating. And mixing the PET resin, the chain extender and the wear-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain the PET monofilament.
Example 1
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
90 parts of PET resin, 0.3 part of chain extender and 10 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
75 parts of PET resin, 10 parts of diallyl anhydride-acetyl acetate copolymer and 15 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
80 parts of water, 20 parts of polyurethane, 0.2 part of trimer blocked HDI isocyanate cross-linking agent and 0.5 part of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 1m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
Example 2
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
80 parts of PET resin, 5 parts of chain extender and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
85 parts of PET resin, 5 parts of diallyl anhydride-acetyl acetate copolymer and 10 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
70 parts of water, 30 parts of polyurethane, 5 parts of trimer blocked HDI isocyanate cross-linking agent and 1.7 parts of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 1m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
Example 3
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
83 parts of PET resin, 2 parts of chain extender and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
85 parts of PET resin, 5 parts of diallyl anhydride-acetyl acetate copolymer and 10 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
70 parts of water, 25 parts of polyurethane, 3 parts of trimer blocked HDI isocyanate crosslinking agent and 1 part of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 1m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
Example 4
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
83 parts of PET resin, 2 parts of chain extender and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
85 parts of PET resin and 15 parts of diallyl anhydride-acetyl acetate copolymer.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
75 parts of water, 25 parts of polyurethane, 1.5 parts of dimethyl thiotoluene diamine, 1.5 parts of 2, 4-diamino-3, 5-dimethyl thiotoluene and 1 part of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 3m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elastic monofilament, so that the wear-resistant PET monofilament is obtained.
Example 5
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
83 parts of PET resin, 2 parts of chain extender and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
85 parts of PET resin and 15 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
70 parts of water, 25 parts of polyurethane, 1.5 parts of dimethyl thiotoluene diamine, 1.5 parts of 2, 4-diamino-3, 5-dimethyl thiotoluene and 1 part of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 3m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elastic monofilament, so that the wear-resistant PET monofilament is obtained.
Example 6
The difference from example 1 is that in the process for the preparation of the abrasion resistant PET monofilament, the speed of movement of the monofilament of step (2) through the tank containing the polyurethane composite solution is determined by:
S11, taking monofilaments of an unremoved liquid tank with the same diameter, passing through the liquid tank containing the polyurethane composite solution at different speeds v, and crosslinking and solidifying to obtain wear-resistant monofilaments;
s12, measuring the diameters d of the monofilaments of the non-passing liquid tank and the wear-resistant monofilaments obtained after treatment at a fixed temperature t and a fixed humidity h, obtaining a diameter change value delta d before and after, and establishing a regression curve between the speed of the liquid tank filled with the polyurethane composite solution and the diameter change value delta d;
Δd＝f(t，h，v)；
S13, measuring wear resistance of the non-passing monofilaments of the liquid tank and the wear-resistant monofilaments obtained after treatment, obtaining a front wear resistance change value delta AR and a rear wear resistance change value delta AR, and establishing a regression curve between the diameter change value delta d and the wear resistance change value delta AR;
ΔAR＝f(t，h，Δd)；
S14, converting to obtain a regression curve between the speed of a liquid tank filled with the polyurethane composite solution and the wear resistance change value delta AR; the regression curve is as follows:
Wherein k 1、k2、k3 and k 4 are weight coefficients, a is a constant, t is a real-time temperature, t s is a standard temperature, the value is 25 ℃, h is a real-time humidity, h s is a standard humidity, d is a monofilament diameter, d s is a standard monofilament diameter, the value is 0.8mm, v is a speed passing through a liquid tank containing a polyurethane composite solution, v s is a standard speed passing through the liquid tank containing the polyurethane composite solution, and the value is 1.5mm/s;
s15, determining proper speed of the polyurethane composite solution in a liquid tank according to the requirement of wear resistance;
As a result, regression curves are better fit with actual conditions in the ranges of 0.11-0.12, 0.1, 15-25, a is 2.5-3.5, t is 20-35 ℃, h is 30-70%, d is 0.2-1.5mm and v is 0.3-4m/s for k1, k2, k3 and k4 respectively.
The method for determining the speed of the monofilament moving through the liquid tank containing the polyurethane composite solution in the embodiment can be used for guiding the determination of the speed under different wear resistance requirements in practice by well predicting the change of the wear resistance through the speed of the monofilament moving through the liquid tank containing the polyurethane composite solution.
Comparative example 1
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
87 parts of PET resin and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
85 parts of PET resin, 5 parts of diallyl anhydride-acetyl acetate copolymer and 10 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
75 parts of water, 25 parts of polyurethane, 3 parts of trimer blocked HDI isocyanate crosslinking agent and 1 part of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin and wear-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 1m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
Comparative example 2
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
85 parts of PET resin, 2 parts of chain extender and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
90 parts of PET resin and 10 parts of diallyl anhydride-acetyl acetate copolymer.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
75 parts of water, 25 parts of polyurethane, 1.5 parts of dimethyl thiotoluene diamine, 1.5 parts of a trimer blocked HDI isocyanate crosslinking agent and 1 part of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 1m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
Comparative example 3
The wear-resistant PET monofilament is prepared from the following raw materials in parts by weight:
83 parts of PET resin, 2 parts of chain extender and 15 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
85 parts of PET resin and 15 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component.
The wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament. The preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
75 parts of water, 25 parts of polyurethane, 1.5 parts of trimer blocked HDI isocyanate cross-linking agent and 1.5 parts of polycarbodiimide.
The preparation method of the wear-resistant PET monofilament comprises the following steps:
(1) Mixing PET resin, a chain extender and an abrasion-resistant master batch, drying, discharging in a molten state, cooling, stretching and shaping to obtain PET monofilaments; the diameter of the monofilament is 0.38mm;
(2) And (3) moving the PET monofilament obtained in the step (1) through a liquid tank containing polyurethane composite solution at a speed of 1m/s, and crosslinking and curing for 1s at 230 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
Experimental example
Taking the wear-resistant PET monofilaments of the embodiments 1-5 and the comparative examples 1-3, the tensile test is carried out according to GB/T14344, and the wear resistance detection method comprises the following steps: after the net pipe is woven by the produced monofilaments, wear resistance detection is carried out according to ISO6722, and the wear resistance times of breakage are recorded. The results are shown in Table 1.
Table 1 wear resistant PET monofilament performance
Wear-resisting times (times) Tension, (N)
Example 1 10529 47
Example 2 11031 48
Example 3 11380 50
Example 4 10290 46
Example 5 12271 55
Comparative example 1 7035 43
Comparative example 2 5930 41
Comparative example 3 8930 40
The results show that the abrasion resistance of examples 1-5 is significantly better than that of comparative examples 1-3, with example 1-5 again being the most preferred example 5, followed by example 3. The abrasion resistance of examples 1-5 is significantly better than that of comparative examples 1-3. This demonstrates the significant impact of the components of the polyethylene terephthalate raw material, chain extender and abrasion resistant masterbatch used in the present invention, and the polyurethane process of coating cross-linked curing of the PET filaments, on the properties of the resulting filaments.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the above-described embodiments and examples, and various changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims (6)

1. The wear-resistant PET monofilament is characterized by comprising the following raw materials in parts by weight:
80-90 parts of PET resin, 0.3-5 parts of chain extender and 10-20 parts of wear-resistant master batch;
the raw materials for preparing the wear-resistant master batch comprise the following components in parts by weight:
75-90 parts of PET resin, 5-10 parts of diallyl anhydride-acetyl acetate copolymer and 10-15 parts of long-chain linear saturated carboxylic acid sodium salt with a carbon chain length of C28-C32 as a main component;
the wear-resistant PET monofilament is coated on the surface of the polyurethane composite solution, and is crosslinked and solidified at high temperature to form the surface of the high-strength high-elasticity monofilament;
the preparation raw materials of the polyurethane composite solution comprise the following components in parts by weight:
70-80 parts of water, 20-30 parts of polyurethane, 0.2-5 parts of at least one of a trimer blocked HDI isocyanate crosslinking agent or dimethyl thiotoluene diamine and 0.5-1.7 parts of polycarbodiimide.
2. The abrasion resistant PET monofilament of claim 1, wherein said PET resin is a polyethylene terephthalate homopolymer.
3. The abrasion resistant PET monofilament according to claim 1 or 2, characterized in that said polyethylene terephthalate homopolymer has a solution viscosity IV value in dichloroacetic acid at 25 ℃ greater than 0.80dl/g.
4. A wear resistant PET monofilament as claimed in claim 3, characterized in that said polyethylene terephthalate homopolymer has a solution viscosity IV value in dichloroacetic acid at 25 ℃ of 0.80-1.1dl/g.
5. A method of producing a wear resistant PET monofilament according to any one of claims 1 to 4, comprising the steps of:
s01, mixing PET resin, a chain extender and an abrasion-resistant master batch to prepare monofilaments;
S02, moving the monofilament obtained in the step S01 through a liquid tank containing polyurethane composite solution, coating the polyurethane composite solution on the surface, and crosslinking and curing for 0.5-5S at 150-240 ℃ to form the surface of the high-strength high-elasticity monofilament, so as to obtain the wear-resistant PET monofilament.
6. The method of producing a wear resistant PET monofilament according to claim 5, wherein in S02, the moving speed is 0.5 to 4m/S.
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JP2011084596A (en) * 2009-10-13 2011-04-28 Teijin Ltd Polyester composition and polyester-based fiber comprising the same
CN105040133A (en) * 2014-04-16 2015-11-11 贝纶奈克斯特鲁西恩单丝有限公司 Monofilaments with high abrasion and shape stability, low sliding friction and propensity towards soiling, textile planar structures containing the same, and the use of same
CN106232883A (en) * 2014-06-20 2016-12-14 贝纶奈克斯特鲁西恩单丝有限公司 There is high-wearing feature and shape stability and the monofilament of low sliding friction, consisting of webs and application thereof
CN110205707A (en) * 2019-05-10 2019-09-06 海盐县硕创服装研究所 A kind of wear-resistant fabric
CN115160741A (en) * 2022-06-16 2022-10-11 宁波坚锋新材料有限公司 High-conductivity high-strength PET composite material and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5700881A (en) * 1994-03-25 1997-12-23 Hoechst Aktiengesellschaft Abrasion-resistant polyester mixture with enhanced consistency of processing, monofilaments therefrom, and production and use thereof
JP2011084596A (en) * 2009-10-13 2011-04-28 Teijin Ltd Polyester composition and polyester-based fiber comprising the same
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