CN114075784B - Secondary oiling agent treatment method for heterocyclic aramid fiber - Google Patents

Secondary oiling agent treatment method for heterocyclic aramid fiber Download PDF

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CN114075784B
CN114075784B CN202010844775.2A CN202010844775A CN114075784B CN 114075784 B CN114075784 B CN 114075784B CN 202010844775 A CN202010844775 A CN 202010844775A CN 114075784 B CN114075784 B CN 114075784B
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oiling agent
oiling
stage
yarn
treatment
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CN114075784A (en
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刘克杰
彭涛
叶瑞
张俊华
曾永荣
张聪
刘开勇
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Zhonglan Chenguang Chemical Co ltd
China Bluestar Chengrand Co Ltd
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Zhonglan Chenguang Chemical Co ltd
China Bluestar Chengrand Co Ltd
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    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/02—Setting
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/2246—Esters of unsaturated carboxylic acids
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
    • D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • 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
    • D06M15/53—Polyethers
    • 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
    • D06M2101/34—Polyamides
    • D06M2101/36—Aromatic polyamides
    • 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
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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

Abstract

The invention discloses a secondary oiling agent treatment method of heterocyclic aramid fibers, and belongs to the technical field of chemical fibers. In the spinning process, the first-stage oiling agent treatment is carried out on the heterocyclic aramid fiber precursor, the second-stage oiling agent treatment is carried out after the drying and the heat treatment, and then the heterocyclic aramid fiber is wound and formed. The first-stage oil is prepared from isooctyl stearate, fatty alcohol phosphate potassium salt, polyethylene glycol monooleate and polyoxyethylene sorbitan monooleate; the second-level oil is prepared from laurylamine polyoxyethylene ether, sodium diisooctyl sulfosuccinate and polyoxyethylene ether sorbitan monooleate. The heterocyclic aramid fiber finished product silk fiber treated by the two-stage different oiling agents has small loss of mechanical properties in the molding processing process and good weaving performance, can be used for preparing high-quality woven cloth, and simultaneously has warp and weft stretching strength reaching 20.3KN/5cm and 21.5KN/5cm respectively, and is suitable for manufacturing high-tech products such as bulletproof chips, aircraft skins, linear motors and the like.

Description

Secondary oiling agent treatment method for heterocyclic aramid fiber
Technical Field
The invention relates to a manufacturing technology of heterocyclic aramid fibers, in particular to a secondary oiling agent treatment method of heterocyclic aramid fibers, and belongs to the technical field of chemical fibers.
Background
The heterocyclic aramid fiber is ternary, quaternary or five-membered copolymer fiber formed by modifying a molecular chain structure based on a domestic aramid fiber III molecular structure. The domestic aramid III is a heterocyclic aromatic polyamide fiber similar to the Russian APMOC fiber. The aramid fiber III polymer is formed by copolymerizing three monomers of terephthaloyl chloride, p-phenylenediamine and 5 (6) -amino-2- (4-aminophenyl) benzimidazole.
The key preparation technology of the heterocyclic aramid is generally divided into two procedures. The first step is a polymerization process, i.e., preparing a polymer; the second step is a spinning process, i.e. preparing the fiber. For example, CN 101921395A discloses a preparation method of high-performance heterocyclic aramid fiber, which comprises the following process steps: A. preparation of heterocyclic polyamide solutions (i.e., preparing polymers); B. deaeration, wet spinning (i.e. preparing fibers): spraying the polymer solution into a coagulating bath through a spinning nozzle to obtain a primary fiber, carrying out plastic stretching on the primary fiber in a plasticizing stretching bath, and then winding the primary fiber into a cylinder after washing, oiling, drying, heat treatment and surface treatment. CN 104357939a discloses a preparation method of chlorine-containing high-performance heterocyclic aramid fiber, which comprises the following steps: A. preparing chlorine-containing heterocyclic polyamide solution (namely preparing polymer); B. deaeration, wet spinning (i.e. preparing fibers): spraying the polymer solution into a coagulating bath through a spinning nozzle to obtain a primary fiber, carrying out plastic stretching on the primary fiber in a plasticizing stretching bath, and then carrying out water washing, oiling, drying and heat treatment on the primary fiber, and winding the primary fiber into a cylinder. The spinning process is divided into a spinning technology of intermittent heat treatment and a spinning technology of continuous heat treatment according to different fiber heat treatment processes. Russian patent RU2167961C1 reports a batch heat treatment spinning process that yields fiber in the range of 70% -80%. Domestic patent CN1473969A discloses a one-step continuous heat treatment process, which can obtain more stable quality fiber.
In the process of forming the heterocyclic aramid fiber, i.e., in the spinning process, the current oiling treatment technology for the heterocyclic aramid fiber is basically focused on the surface treatment of the fiber, for example:
1. CN102797152a discloses a surface modification method of aramid fiber, which comprises the steps of preparing a surface modification treatment agent, coating the surface treatment agent and drying, wherein the surface modification treatment agent adopts fluorocarbon silane coupling agent with a specific molecular structural formula to be dissolved in an organic solvent for direct use, or adopts fluorocarbon active agent to emulsify and disperse the fluorocarbon silane coupling agent in water for direct use. The surface treating agent improves the interfacial property of the aramid fiber and the epoxy resin matrix, and the interlayer shear strength of the modified aramid fiber/epoxy composite material reaches 50-58 MPa.
2. CN10787647a discloses a surface treatment method of aramid fiber iii, which comprises the steps of preparing a surface modification treatment agent, surface treatment, drying and the like, wherein the preparation of the surface treatment agent is as follows: adding one or more of low molecular weight aliphatic diisocyanate or glycol diglycidyl ether into organic solvent to form a uniform solution with mass fraction of 0.5-5%. The prepared surface treating agent can improve the interfacial adhesion performance of the aramid fiber III/epoxy composite material, and further improve the interlayer shear strength of the aramid fiber III/epoxy composite material to 45-55 MPa.
It can be seen that the prior art is mainly directed at the modification treatment of the surface of the aramid fiber III to improve the interface performance of the aramid fiber and the composite material, but the problems of poor weaving performance of the heterocyclic fiber and low quality of woven cloth cannot be solved.
Disclosure of Invention
The invention aims to provide a secondary oiling agent treatment method of heterocyclic aramid fiber. In the spinning process, the first-stage oiling agent treatment is carried out on the heterocycle aramid yarn, the second-stage oiling agent treatment is carried out after the drying and the heat treatment, and finally the heterocycle aramid yarn is wound and formed. The heterocyclic aramid fiber treated by the two-stage different oiling agents has small loss of mechanical properties in the molding processing process, has good fiber weaving property, can be used for preparing high-quality woven fabrics, and can remarkably improve the fiber quality.
The aim of the invention is achieved by the following technical scheme: a method for treating a secondary oiling agent of a heterocyclic aramid fiber, comprising the following steps:
A. and (3) wire unwinding: under the condition that the tension is less than or equal to 0.1cN/tex and less than or equal to 1cN/tex, unwinding the heterocyclic aramid yarn from a yarn unwinding machine to uniformly unwind the yarn from a yarn drum at a speed of 10-50 m/min;
B. first-stage oiling agent treatment: the heterocyclic aramid fiber precursor is unreeled from a filament unreeler and then enters a first-stage oiling machine, the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation amount of the oiling agent of 2-10L/min;
C. drying and heat treatment: drying the oiled raw silk and then feeding the raw silk into a heat treatment channel for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine after air cooling, and the precursor is immersed into the oiling agent to be subjected to continuous and stable oiling treatment under the circulation quantity of the oiling agent of 5-25L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
The heterocyclic aramid fiber is a ternary, quaternary or five-membered copolymer fiber, and the molecular structure of the fiber comprises basic chain unit shown in the following formulas (I) and (II), wherein the formula (I) is a chain unit generated by reacting terephthaloyl chloride with p-phenylenediamine; the formula (II) is a chain link generated by reacting terephthaloyl chloride with 5 (6) -amino-2- (4-aminophenyl) benzimidazole.
In the step B, the first-stage oiling agent consists of the following components in percentage by mass:
(a) Isooctyl stearate: 20% -50%;
(b) Fatty alcohol phosphate potassium salt: 15% -40%;
(c) Polyethylene glycol monooleate: 10% -30%;
(d) Polyoxyethylene sorbitan monooleate: 5% -15%.
Further, the component (a) has a CAS number of isooctyl stearate of 27214-90-0.
Further, the component (b) is a mixture containing any two or three of the compounds shown in the following formulas (1), (2) and (3),
wherein R is C 2 ～C 20 Alkyl groups of (C) are preferred 4 ～C 16 。
Further, the component (c) polyethylene glycol monooleate CAS number 9004-96-0, having the formula: c (C) 18 H 33 O 2 .(C 2 H 4 O) n.H, the molecular structural formula is as follows:
wherein n represents the polymerization degree of polyethylene glycol, and n is more than or equal to 2 and less than or equal to 10. The polymerization degree of polyethylene glycol is preferably 4-8.
Further, the component (d) polyoxyethylene sorbitan monooleate CAS number: 9005-65-6.
And (c) adding the components (a), (b), (c) and (d) into a mixer, stirring and mixing uniformly, and filtering to remove oil insoluble substances to obtain the first-stage oil in the step A. When the oil solution is used for the first-stage oil solution treatment, the first-stage oil solution is added into a dispersing machine, deionized water is added, and the mixture is stirred and sheared at a high speed to prepare emulsion with the mass concentration of 0.1-5 percent, and then the emulsion is oiled for use.
In the first-stage oiling agent treatment process, the first-stage oiling agent can improve the lubricity and the dispersibility of the heterocyclic aramid fiber precursor, has good volatility at the heat treatment temperature of 300-400 ℃ and can ensure that the solvent and the water in the precursor overflow fully during the heat treatment, thereby forming the fiber with more compact tissue structure.
In the step C, the drying is carried out for 0.2 to 1min at the temperature of 140 to 180 ℃.
In the step C, the temperature of the heat treatment channel is 300-400 ℃ and the treatment time is 0.2-1 min.
In the step D, the second-stage oiling agent consists of the following components in percentage by mass: 30-60% of laurylamine polyoxyethylene ether, 20-50% of diisooctyl sodium sulfosuccinate and 10-30% of polyoxyethylene ether sorbitan monooleate.
Further, the diisooctyl sodium sulfosuccinate CAS number: 577-11-7; polyoxyethylene ether sorbitan monooleate CAS number: 9005-65-6.
And (D) adding the laurylamine polyoxyethylene ether, the sodium diisooctyl sulfosuccinate and the polyoxyethylene ether sorbitan monooleate into a mixer, stirring and mixing uniformly, and filtering to remove oil insoluble matters to obtain the second-stage oil agent in the step (D). When the oil solution is used for the second-stage oil solution treatment, the second-stage oil solution is added into a dispersing machine, deionized water is added, and the mixture is stirred and sheared at a high speed to prepare emulsion with the mass concentration of 0.5-4 percent, and then the emulsion is oiled for use.
In the second-stage oiling agent treatment process, a layer of oil film is formed on the surface of the heterocycle aramid fiber finished product yarn by the second-stage oiling agent, so that the fiber has lubricating property and antistatic property, and meanwhile, the adsorption property between the oil films can endow the fiber with bundling property. After the second-stage oiling agent treatment is carried out on the heterocycle aramid fiber finished yarn, the weaving performance of the fiber is obviously improved.
The method can treat the heterocyclic aramid fiber in two modes of intermittent operation and continuous operation, and is particularly selected and used according to production requirements.
Drawings
FIG. 1 is a flow chart of the treatment of the second-stage oiling agent for the heterocyclic aramid fiber.
The invention has the following beneficial effects:
1. in the processing process of the heterocyclic aramid fiber, the heat treatment plays a vital role in the mechanical properties of the fiber. The invention well solves the problems of lubricity and dispersivity of the fiber by the first-stage oiling agent treatment, so that the fiber is less in abrasion and more uniformly heated during heat treatment; meanwhile, the first-stage oiling agent formed by the four components (a), (b), (c) and (d) has the characteristic of easy volatilization under the heat treatment condition, avoids the oiling agent from adhering to the surface of the fiber to form a mucous membrane, is beneficial to the sufficient overflow of solvent and moisture in the fiber, and ensures that the fiber tissue structure is more compact, thereby obtaining the fiber with more excellent mechanical property.
2. The heterocyclic aramid has excellent mechanical properties, but its weaving properties are poor, which is caused by its own physical structure and manufacturing process. The invention effectively solves the problem of poor weaving property when the heterocyclic aramid is applied to woven cloth through the second-stage oiling agent treatment. In the process of treating the second-stage oiling agent, the second-stage oiling agent which is formed by proportioning three components (laurylamine polyoxyethylene ether, sodium diisooctyl sulfosuccinate and polyoxyethylene ether sorbitan monooleate) of the invention forms a layer of oil film on the surface of the heterocycle aramid finished yarn, so that the fiber has lubricating property, the sodium diisooctyl sulfosuccinate can also have antistatic property, and meanwhile, the adsorptivity between the oil films can be provided for the bundling property of the fiber, and the weaving property of the fiber is obviously improved.
3. According to the invention, the characteristic of the heterocyclic aramid fiber is combined, and the composite oiling agents which are used by matching the first-stage oiling agent and the second-stage oiling agent are adopted to carry out oiling treatment twice respectively, so that the fiber smoothness can be endowed, the friction coefficient of the fiber and a guide wire piece is reduced, the abrasion is reduced, the fiber is heated uniformly during heat treatment, the oiling agents are easy to volatilize, and the fiber is ensured to have more excellent mechanical properties; meanwhile, the fiber can be endowed with bundling and antistatic properties, so that the weavability of the fiber is obviously improved. After the heterocyclic aramid fiber is treated by the secondary oiling agent, the heterocyclic aramid fiber can be used for preparing woven cloth with excellent performance, the warp stretching strength of the obtained woven cloth reaches 20.3KN/5cm, the weft stretching strength reaches 21.5KN/5cm, and the heterocyclic aramid fiber is suitable for manufacturing high-tech products such as bulletproof chips, aircraft skins, linear motors and the like.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Example 1
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.5cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn cylinder at a speed of 35 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the condition that the circulation amount of the oiling agent is 5L/min;
C. drying and heat treatment: drying the oily raw silk at 160 ℃ for 0.5min by a dryer, and then entering a heat treatment channel (the temperature is 330 ℃ and the treatment time is 0.6 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 10L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: isooctyl stearate [ CAS number 27214-90-0 ]]20% of a base; 40% of n-butanol potassium phosphate salt (composed of a compound represented by the following formula (1 a) or formula (2 a)); polyethylene glycol monooleate [ CAS number 9004-96-0 ]]The molecular formula: c (C) 18 H 33 O 2 .(C 2 H 4 O) 4 H,25%; polyoxyethylene sorbitan monooleate [ CAS number: 9005-65-6]15%; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 1%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: laurylamine polyoxyethylene ether 60%, diisooctyl sodium sulfosuccinate [ CAS number: 577-11-7]30%, polyoxyethylene ether sorbitan monooleate [ CAS number: 9005-65-6]10%; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 0.5%, and adding the emulsion into a No. 2 oiling machine for use.
Example 2
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.1cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 10 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation amount of the oiling agent of 2L/min;
C. drying and heat treatment: drying the crude yarn after oiling by a dryer at 140 ℃ for 1min, and then entering a heat treatment channel (the temperature is 300 ℃ and the treatment time is 1 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 5L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: isooctyl stearate 50%, potassium orthooctanol phosphate (composed of a compound represented by the following formula (1 b), formula (2 b), formula (3 b)) 20%, polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 5 H20%, polyoxyethylene sorbitan monooleate 10%; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 0.5%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 30% of laurylamine polyoxyethylene ether, 50% of diisooctyl sodium sulfosuccinate and 20% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 1%, and adding the emulsion into a No. 2 oiling machine for use.
Example 3
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.8cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 10L/min;
C. drying and heat treatment: drying the oiled raw silk at 180 ℃ for 0.2min by a dryer, and then entering a heat treatment channel (the temperature is 350 ℃ and the treatment time is 0.5 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 25L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: 50% of isooctyl stearate, 20% of isoamyl alcohol potassium phosphate (composed of compounds represented by the following formula (2C) and formula (3C)), and polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 6 25% of H, 5% of polyoxyethylene sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 0.1%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 50% of laurylamine polyoxyethylene ether, 20% of diisooctyl sodium sulfosuccinate and 30% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 2%, and adding the emulsion into a No. 2 oiling machine for use.
Example 4
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of 1cN/tex tension, the heterocyclic aramid fiber precursor is unreeled from a filament unreeler, so that the precursor is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 8L/min;
C. drying and heat treatment: drying the oily raw silk at 150 ℃ for 0.8min by a dryer, and then entering a heat treatment channel (at 380 ℃ for 0.8 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent to be continuously and stably oiled under the circulation quantity of the oiling agent of 20L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: isooctyl stearate 25%, potassium isoamyl phosphate (consisting of the same compound as in example 3) 40%, polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 6 25% of H, 10% of polyoxyethylene sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 3%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 45% of laurylamine polyoxyethylene ether, 30% of diisooctyl sodium sulfosuccinate and 25% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 3%, and adding the emulsion into a No. 2 oiling machine for use.
Example 5
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.6cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation amount of the oiling agent of 3L/min;
C. drying and heat treatment: drying the oily raw silk at 160 ℃ for 0.5min by a dryer, and then entering a heat treatment channel (the temperature is 320 ℃ and the treatment time is 1 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 15L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: isooctyl stearate 20%, potassium n-butoxide phosphate (composed of the same compound as in example 1) 40%, polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 6 25% of H, 15% of polyoxyethylene sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machineAdding deionized water, stirring and shearing at high speed to prepare emulsion with mass concentration of 2%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 50% of laurylamine polyoxyethylene ether, 35% of diisooctyl sodium sulfosuccinate and 15% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 4%, and adding the emulsion into a No. 2 oiling machine for use.
Example 6
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.6cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 6L/min;
C. drying and heat treatment: drying the oily raw silk at 145 ℃ for 0.6min by a dryer, and then entering a heat treatment channel (the temperature is 360 ℃ and the treatment time is 0.7 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 14L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: 45% of isooctyl stearate, potassium salt of n-heptanol phosphate (represented by the following formulas (1 d), 2 d) and 3 d)The composition of the compounds shown) 15%, polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 7 30% of H and 10% of polyoxyethylene sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 5%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 35% of laurylamine polyoxyethylene ether, 35% of diisooctyl sodium sulfosuccinate and 30% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 2.5%, and adding the emulsion into a No. 2 oiling machine for use.
Example 7
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.6cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 9L/min;
C. drying and heat treatment: drying the crude yarn after oiling by a dryer at 170 ℃ for 0.8min, and then feeding the crude yarn into a heat treatment channel (the temperature is 385 ℃ and the treatment time is 0.8 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 13L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: isooctyl stearate 40%, potassium orthooctanol phosphate (composed of the same compound as in example 2) 38%, polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 8 H10%, polyoxyethylene sorbitan monooleate 12%; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 4.5%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 55% of laurylamine polyoxyethylene ether, 25% of diisooctyl sodium sulfosuccinate and 20% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 3.5%, and adding the emulsion into a No. 2 oiling machine for use.
Example 8
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.5cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the condition that the circulation amount of the oiling agent is 5L/min;
C. drying and heat treatment: drying the crude yarn after oiling by a dryer at 155 ℃ for 0.6min, and then feeding the crude yarn into a heat treatment channel (the temperature is 375 ℃ and the treatment time is 0.9 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 13L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: 40% of isooctyl stearate, 30% of ethanol phosphate potassium salt (composed of compounds represented by the following formulas (1 e) and (2 e)), polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 2 H20%, polyoxyethylene sorbitan monooleate 10%; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 4%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 40% of laurylamine polyoxyethylene ether, 30% of diisooctyl sodium sulfosuccinate and 30% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 1.5%, and adding the emulsion into a No. 2 oiling machine for use.
Example 9
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.4cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the condition that the circulation amount of the oiling agent is 5L/min;
C. drying and heat treatment: drying the crude yarn after oiling by a dryer at 175 ℃ for 0.3min, and then entering a heat treatment channel (the temperature is 310 ℃ and the treatment time is 1 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 6L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: 45% of isooctyl stearate, 25% of potassium orthohexadecyl phosphate (composed of compounds represented by the following formulas (2 f) and (3 f)), and polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 10 15% of H and 15% of polyoxyethylene sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 2.5%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 45% of laurylamine polyoxyethylene ether, 35% of diisooctyl sodium sulfosuccinate and 20% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 1%, and adding the emulsion into a No. 2 oiling machine for use.
Example 10
As shown in fig. 1, a method for treating a secondary oiling agent of a heterocyclic aramid fiber comprises the following steps:
A. and (3) wire unwinding: under the condition of tension of 0.7cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn drum at the speed of 50 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 6L/min;
C. drying and heat treatment: drying the crude yarn after oiling by a dryer at 175 ℃ for 0.3min, and then entering a heat treatment channel (the temperature is 310 ℃ and the treatment time is 1 min) for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation quantity of the oiling agent of 6L/min;
E. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In the step B, the first-stage oiling agent is prepared from the following components in percentage by mass: 40% of isooctyl stearate, 30% of potassium orthoeicosanol phosphate (composed of compounds represented by the following formulas (2 g) and (3 g)), and polyethylene glycol monooleate C 18 H 33 O 2 .(C 2 H 4 O) 3 H22%, polyoxyethylene sorbitan monooleate 8%; adding the components into a mixer, stirring and mixing uniformly, and filteringRemoving insoluble substances of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 3.5%, and adding the emulsion into a No. 1 oiling machine for use.
In the step D, the second-stage oiling agent is prepared from the following components in percentage by mass: 42% of laurylamine polyoxyethylene ether, 40% of diisooctyl sodium sulfosuccinate and 18% of polyoxyethylene ether sorbitan monooleate; adding the components into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil solution to obtain the oil solution; adding the oiling agent into a dispersing machine, adding deionized water, stirring and shearing at high speed to prepare emulsion with the mass concentration of 2%, and adding the emulsion into a No. 2 oiling machine for use.
Comparative example 1
The treatment of the oiling agent in the step D is only remained on the basis of the embodiment 1 by only carrying out the oiling agent treatment once on the heterocyclic aramid fiber, namely, the step B in the embodiment 1 is canceled, and the specific steps are as follows:
A. and (3) wire unwinding: under the condition of tension of 0.5cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn cylinder at a speed of 35 m/min;
B. drying and heat treatment: the heterocyclic aramid fiber precursor is dried for 0.5min at 160 ℃ by a dryer and then enters a heat treatment channel (the temperature is 330 ℃ and the treatment time is 0.6 min) for heat setting treatment;
C. oil treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn of the heterocyclic aramid fiber enters a second-stage oiling machine (namely a No. 2 oiling machine) after air cooling, and the precursor is immersed into the oiling agent to be subjected to continuous and stable oiling treatment under the circulation quantity of the oiling agent of 10L/min;
D. winding: and (3) oiling the finished silk of the heterocyclic aramid fiber, and then collecting and forming the silk by a winding machine.
In step C, the oil was the same as the second stage oil described in step D of example 1, and the concentration used in the oiling machine was the same as in example 1.
Comparative example 2
The treatment of the oil solution in the step B is only remained on the basis of the embodiment 1 by only carrying out the oil solution treatment once on the heterocyclic aramid fiber, namely, the step D in the embodiment 1 is canceled, and the specific steps are as follows:
A. and (3) wire unwinding: under the condition of tension of 0.5cN/tex, the heterocyclic aramid yarn is unreeled from a yarn unreeler, so that the yarn is uniformly unreeled from a yarn cylinder at a speed of 35 m/min;
B. first-stage oiling agent treatment: the method comprises the steps that after being unreeled from a yarn unreeler, the heterocyclic aramid yarn enters a first-stage oiling machine (namely a 1# oiling machine), and the yarn is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the condition that the circulation amount of the oiling agent is 5L/min;
C. drying and heat treatment: drying the oily raw silk at 160 ℃ for 0.5min by a dryer, then entering a heat treatment channel (the temperature is 330 ℃ and the treatment time is 0.6 min) for heat setting treatment, and obtaining finished silk after heat treatment;
D. winding: and (3) carrying out secondary oiling treatment on the heterocycle aramid fiber finished yarn, and then carrying out yarn winding forming through a winding machine.
In step B, the oil was the same as the first stage oil described in step B of example 1, and the concentration used in the oiling machine was the same as in example 1.
Experimental example
The hetero ring aramid fibers treated in examples 1 to 10 and comparative examples 1 to 2 were tested for the oil-applying rate, the fiber strength, the fuzzing grade, the fiber softness, and the fiber dispersibility according to the enterprise standard Q/91510132587572760X.001 to 2018, and the woven fabric performance according to GB/T3923.1-2013, and the test results are shown in Table 1.
From table 1, it can be seen that:
1) The fibers obtained by the treatment of examples 1-10 had a fiber oil length of 0.5% -1.7%; the fiber strength can reach 33.4cN/dtex; the fiber has excellent grade, softness and dispersibility; the warp tensile strength of the woven fabric can reach 20.3KN/5cm, and the weft tensile strength can reach 21.5KN/5 cm.
2) The data of example 1 and comparative example 1 show that if the first-stage finish treatment is omitted, the resulting fiber strength is greatly reduced and the fiber hairiness grade, softness, dispersibility are poor. The resulting woven cloth also had poor properties.
3) The data of example 1 and comparative example 2 show that if the second-stage oiling agent treatment is omitted, the resulting fiber strength is excellent, but the woven fabric prepared from the fiber has poor properties. The second-stage oiling agent disclosed by the invention can effectively solve the defect problem of the heterocyclic aramid fiber in the aspect.

Claims (6)

1. A secondary oiling agent treatment method of heterocyclic aramid fiber is characterized by comprising the following steps:
A. and (3) wire unwinding: under the condition that the tension is less than or equal to 0.1cN/tex and less than or equal to 1cN/tex, unwinding the heterocyclic aramid yarn from a yarn unwinding machine to uniformly unwind the yarn from a yarn drum at a speed of 10-50 m/min;
B. first-stage oiling agent treatment: the heterocyclic aramid fiber precursor is unreeled from a filament unreeler and then enters a first-stage oiling machine, the precursor is immersed into the oiling agent, and continuous and stable oiling treatment is carried out under the circulation amount of the oiling agent of 2-10L/min;
C. drying and heat treatment: drying the oiled raw silk and then feeding the raw silk into a heat treatment channel for heat setting treatment;
D. second-stage oiling agent treatment: the precursor is processed into a finished product yarn after heat treatment, the finished product yarn enters a second-stage oiling machine after air cooling, and the precursor is immersed into the oiling agent to be subjected to continuous and stable oiling treatment under the circulation quantity of the oiling agent of 5-25L/min;
E. winding: after the second-stage oiling treatment, the finished silk of the heterocyclic aramid fiber is shaped by a winding machine;
in the step B, the first-stage oiling agent consists of the following components in percentage by mass:
(a) Isooctyl stearate: 20% -50%;
(b) Fatty alcohol phosphate potassium salt: 15% -40%;
(c) Polyethylene glycol monooleate: 10% -30%;
(d) Polyoxyethylene sorbitan monooleate: 5% -15%;
the component (b) is a mixture containing any two or three of the compounds shown in the following formulas (1), (2) and (3),
wherein R is C 2 ～C 20 Alkyl of (a);
the component (c) polyethylene glycol monooleate CAS number is 9004-96-0, and the molecular formula is: c (C) 18 H 33 O 2 .(C 2 H 4 O) n.H, the molecular structural formula is as follows:
wherein n represents the polymerization degree of polyethylene glycol, and n is more than or equal to 2 and less than or equal to 10;
in the step D, the second-stage oiling agent consists of the following components in percentage by mass: 30-60% of laurylamine polyoxyethylene ether, 20-50% of diisooctyl sodium sulfosuccinate and 10-30% of polyoxyethylene ether sorbitan monooleate.
2. The method for treating the secondary oiling agent of the heterocyclic aramid fiber according to claim 1, which is characterized in that: the heterocyclic aramid fiber is a ternary, quaternary or pentaary copolymer fiber, and the molecular structure of the fiber comprises basic chain unit shown in the following formula (I) and formula (II), wherein the formula (I) is chain unit generated by reacting terephthaloyl chloride with p-phenylenediamine; the formula (II) is a chain link generated by the reaction of terephthaloyl chloride and 5 (6) -amino-2- (4-aminophenyl) benzimidazole;
。
3. the method for treating the secondary oiling agent of the heterocyclic aramid fiber according to claim 1, which is characterized in that: the first-stage oiling agent is prepared by adding the components (a), (b), (c) and (d) into a mixer, stirring and mixing uniformly, and filtering to remove the oiling agent insoluble matters.
4. The method for treating the secondary oiling agent of the heterocyclic aramid fiber according to claim 1, which is characterized in that: when the first-stage oiling agent is used for oiling the heterocyclic aramid fiber precursor, the first-stage oiling agent is added into a dispersing machine, deionized water is added, and the mixture is stirred and sheared at a high speed to prepare emulsion with the mass concentration of 0.1% -5% for use.
5. The method for treating the secondary oiling agent of the heterocyclic aramid fiber according to claim 1, which is characterized in that: the second-stage oil is prepared by adding laurylamine polyoxyethylene ether, sodium diisooctyl sulfosuccinate and polyoxyethylene ether sorbitan monooleate into a mixer, stirring and mixing uniformly, and filtering to remove insoluble matters of the oil.
6. The method for treating the secondary oiling agent of the heterocyclic aramid fiber according to claim 1, which is characterized in that: when the second-stage oiling agent is used for oiling the heterocycle aramid fiber finished yarn, the second-stage oiling agent is added into a dispersing machine, deionized water is added, and the mixture is stirred and sheared at a high speed to prepare emulsion with the mass concentration of 0.5% -4% for reuse.
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