CN107904693B - Full-dull network stretch yarn and preparation method thereof - Google Patents
Full-dull network stretch yarn and preparation method thereof Download PDFInfo
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- CN107904693B CN107904693B CN201711341950.0A CN201711341950A CN107904693B CN 107904693 B CN107904693 B CN 107904693B CN 201711341950 A CN201711341950 A CN 201711341950A CN 107904693 B CN107904693 B CN 107904693B
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
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- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D7/00—Collecting the newly-spun products
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- 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
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
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- 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
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- 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
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- 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
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- 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
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- 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
Abstract
The invention relates to a full dull network elastic yarn and a preparation method thereof, wherein a polyester melt is metered, extruded, cooled, oiled and wound to prepare a POY (polyester oriented yarn), the POY is processed by a yarn guide pipe, a network, heating, stretching, false twisting, heat setting and winding to prepare a DTY (draw textured yarn), namely the full dull network elastic yarn, oiling oil contains crown ether, the content of the crown ether is 67.30-85.58 wt%, wherein a matting agent is dispersed in the polyester melt and is a mixture of amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and amorphous silicon dioxide. The prepared full-dull network stretch yarn has the glossiness of less than 20%, the crimp shrinkage rate of more than or equal to 35% and the crimp stability of 75-85%. The method is simple and reasonable, and the prepared full-dull network stretch yarn has the advantages of full dull and excellent performance, and has extremely good popularization value.
Description
Technical Field
The invention belongs to the field of fiber preparation, and relates to a full-dull network stretch yarn and a preparation method thereof.
Background
Polyethylene terephthalate (PET) fibers have been developed rapidly since the advent due to their excellent properties, and their production has become the world's cap of synthetic fibers. The polyester fiber has a series of excellent performances such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance, light resistance, acid resistance, alkali resistance, corrosion resistance and the like, and the fabric prepared from the polyester fiber has the advantages of good crease resistance, good stiffness and smoothness and the like, so the polyester fiber is widely applied to the fields of clothing, home textiles and the like.
Because most PET fibers have small dielectric constant, low moisture regain and high friction coefficient, a spin finish must be used in the spinning process. The main component of the oil agent is surfactant, which can form directional adsorption layer, i.e. oil film, on the surface of the chemical fiber, the oil film can reduce the accumulation of static charge produced by friction between fibers, thus reducing the surface resistance of the fiber and increasing the conductivity of the fiber, on the other hand, the oil film isolating fiber can produce certain affinity to the fiber, so that the fiber has certain concentration without scattering, besides, the oil film also endows the fiber with certain smoothness, so that the fiber is not damaged in the friction process and has good hand feeling, and the oil agent can smoothly pass through the operation procedures of winding, drawing, drying and the like during spinning, thereby eliminating the electrostatic action in the textile processing process, avoiding the bad phenomena of leather ring winding, roller, cylinder and the like, reducing the generation of broken filaments and broken ends, and ensuring the quality of fiber products. The friction behavior of the fiber can be changed after the oil film on the surface of the fiber is broken at high temperature, high speed and certain pressure, so that the friction force is increased, and other problems such as broken filaments and broken ends of the fiber are caused. In addition, with the development of high speed, ultra high speed and multifunctional fiber of polyester filament, people have higher and higher requirements on heat resistance, viscosity, smoothness and antistatic property of the oil agent, and the property of the oil agent has very important influence on the quality of finally prepared fiber.
In recent years, the application range of the full-dull network stretch yarn made of PET is gradually enlarged, however, the gloss of the full-dull network stretch yarn made by the prior art is still high, the daily required dull effect is difficult to achieve, and the unevenness rate of the fiber is high due to the fact that an oiling agent used in the preparation process is high in volatilization speed and easy to adhere on the surface of the fiber, and the performance of the fiber is influenced. Therefore, the research on the full-dull network stretch yarn with low glossiness and excellent performance is a problem to be solved at present.
Disclosure of Invention
The invention aims to overcome the problems of the full-dull network stretch yarn in the prior art, and provides the full-dull network stretch yarn with low glossiness and excellent performance and the preparation method thereof. The invention adopts the mixture of amorphous titanium dioxide and amorphous silicon dioxide or the mixture of calcium carbonate and amorphous silicon dioxide as inorganic matte particles, the inorganic particles are uniformly dispersed in PET to destroy the crystallization and orientation of the PET, so that the surface of the fiber is in a delustering state; the oiling oil agent contains crown ether, and the crown ether has lower viscosity and higher volatile point compared with the conventional smoothing agent, so that the friction coefficient of the oiling agent containing the crown ether is smaller, and the oiling agent has more excellent thermal stability, thereby improving the processing performance of fibers, reducing the occurrence of broken filaments and improving the performance of the fibers.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the full-dull network elastic yarn is made of polyester;
a matte agent is dispersed in the polyester, and the matte agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, or a mixture of calcium carbonate and amorphous silicon dioxide;
the full-dull network stretch yarn has the glossiness of less than 20%, the crimp shrinkage rate of more than or equal to 35% and the crimp stability of 75-85%.
As a preferred technical scheme:
the fineness of the full-dull network stretch yarn is 75-150 dtex, the breaking strength is more than or equal to 2.0cN/dtex, the elongation at break is 22.0 +/-2.0%, the linear density deviation rate is less than or equal to 2.0%, the breaking strength CV value is less than or equal to 7.0%, the elongation at break CV value is less than or equal to 8.0%, the crimp shrinkage coefficient variation coefficient CV value is less than or equal to 8.5%, the boiling water shrinkage rate is 3.5 +/-0.5%, the full-package rate is more than or equal to 98%, and the full-package rate is improved mainly because the crown ether-containing oil agent is used to reduce the occurrence of polyester fiber broken yarn and floating yarn phenomena.
The full-dull net stretch yarn comprises 1.5-2.0 wt% of the matte agent in polyester and 15-30 wt% of amorphous silicon dioxide in the matte agent.
The invention also provides a method for preparing the full-dull network stretch yarn, which comprises the steps of preparing POY (polyester pre-oriented yarn) yarns by metering, extruding, cooling, oiling and winding the polyester melt, and preparing DTY (draw textured yarn), namely the full-dull network stretch yarn, from the POY yarns through a yarn guide pipe, a network, heating, stretching, false twisting, heat setting and winding and forming;
the matte agent is dispersed in the polyester melt;
the oiling oil agent contains crown ether, and the content of the crown ether is 67.30-85.58 wt%.
Crown ethers are heterocyclic organic compounds containing a plurality of ether groups. The wetting ability of the crown ether surfactant is larger than that of a corresponding open-chain compound, the crown ether has better solubilization, the solubility of the salt compound in the organic compound is lower, but the solubility of the organic matter of the salt compound is improved along with the addition of the crown ether. The common polyester compounds or polyethers in the oil agent have larger intermolecular action due to larger molecular weight and the action of hydrogen bonds, and show larger kinematic viscosity, and after the crown ether is added, the crown ether can be well compatible in the polyester compounds or polyether oil agent system, enters between polyester compounds or polyether molecular chains, shields the acting force between the molecular chains, and thus the viscosity of the oil agent system is reduced. Meanwhile, the antistatic agent of the chemical fiber oiling agent is mainly divided into anionic surfactant, cationic surfactant and amphoteric surfactant, most of which contain metal ions or exist in the form of salt, so that the compatibility of the antistatic agent and polyester compounds or polyethers in the oiling agent is ensured, and the addition of the crown ether improves the compatibility of the antistatic agent and the polyester compounds or polyethers due to the salt dissolution effect, thereby improving the strength of an oiling agent oil film and having great significance on the stability of spinning and the product holding capacity. Indexes of the oil agent are reflected by a comprehensive factor, so that a certain restriction is provided for the addition amount of crown ether, the advantages of heat resistance and oil film strength of the oil agent are not reflected sufficiently when the addition amount is too low, and other indexes are limited when the addition amount is too much.
As a preferred technical scheme:
according to the method, the thermal weight loss of the oil agent after the oil agent is heated and treated at 200 ℃ for 2h is less than 15wt%, the crown ether has a higher volatile point and excellent heat-resistant stability, and the heat-resistant performance of the oil agent introduced with the crown ether is also remarkably improved;
the kinematic viscosity of the oil agent is 27.5-30.1 mm at the temperature of (50 +/-0.01) ° C2The kinematic viscosity of the oil agent prepared from water into 10wt% emulsion is 0.93-0.95 mm2The crown ether can reduce the viscosity of the oil agent mainly because the crown ether has lower viscosity and is a bead-shaped micromolecule, and after the crown ether is introduced into the oil agent system, the crown ether can be well compatible in the polyester compound or polyether compound oil agent system and simultaneously enters between molecular chains of the polyester compound or polyether compound to shield the acting force between the molecular chains, so that the viscosity of the oil agent system is reduced;
the oil film strength of the oil agent is 121-127N, the oil film strength of the oil agent in the prior art is low and is generally about 110N, the main reason is that most of antistatic agents of the chemical fiber oil agent contain metal ions or exist in the form of salt, the compatibility of the antistatic agents and polyester compounds or polyether compounds in the oil agent is poor, and the crown ether can improve the oil film strength is mainly that salt solution effect can be generated after the crown ether is added, so that the compatibility of the antistatic agents and the polyester compounds or polyether compounds is improved, and the oil film strength of the oil agent is further improved;
the surface tension of the oil agent is 23.2-26.8 cN/cm, and the specific resistance is 1.0 x 108～1.8×108Ω·cm；
After oiling, the static friction coefficient between the fibers is 0.250-0.263, and the dynamic friction coefficient is 0.262-0.273;
after oiling, the static friction coefficient between the fiber and the metal is 0.202-0.210, and the dynamic friction coefficient is 0.320-0.332.
The method as described above, wherein the crown ether is 2-hydroxymethyl-12-crown-4, 15-crown-5 or 2-hydroxymethyl-15-crown-5;
the oil agent also contains mineral oil, phosphate potassium salt, trimethylolpropane laurate and alkyl sodium sulfonate;
the mineral oil is one of 9# to 17# mineral oil;
the phosphate potassium salt is dodecyl phosphate potassium salt, isomeric tridecanol polyoxyethylene ether phosphate potassium salt or dodecatetradecanol phosphate potassium salt;
the sodium alkyl sulfonate is sodium dodecyl sulfonate, sodium pentadecyl sulfonate or sodium hexadecyl sulfonate;
when the oil agent is used, water is used to prepare an emulsion with the concentration of 10-20 wt%.
The preparation method of the oil agent comprises the following steps: uniformly mixing crown ether, phosphate potassium salt, trimethylolpropane laurate and sodium alkyl sulfonate, adding the mixture into mineral oil, and uniformly stirring to obtain an oil agent; the addition amount of each component is as follows according to the parts by weight:
the mixing is carried out at normal temperature, the stirring temperature is 40-55 ℃, and the stirring time is 1-3 h.
In the method, the spinning process parameters of the POY yarns are as follows:
temperature of extrusion: 280-290 ℃;
cooling air temperature: 20-25 ℃;
speed of winding: 2500-3000 m/min;
the spinning process parameters of the DTY are as follows:
spinning speed: 550-680 m/min;
T1：210～245℃；
T2：210～245℃；
and (3) air compression: 0.09-0.12 MPa;
oil wheel rotating speed: 0.50 r/min.
The invention mechanism is as follows:
the oiling agent disclosed by the invention is an oiling agent with low viscosity, good heat resistance and higher oil film strength. In the prior art, the higher viscosity of the oil agent is mainly due to the fact that the oil agent contains a common polyester compound or polyether compound, the intermolecular action of the compound is larger due to the larger molecular weight and the action of hydrogen bonds, the kinematic viscosity is larger, so that the viscosity of the oil agent is higher, the viscosity of the oil agent can be obviously reduced after crown ether is added, the crown ether is mainly due to the fact that the viscosity of the crown ether is lower and is bead-shaped micromolecule, the crown ether can be well compatible in a polyester compound or polyether oil agent system and simultaneously enters between molecular chains of the polyester compound or polyether compound to shield acting force between the molecular chains, and therefore the viscosity of the oil agent system is reduced. In the prior art, the oil film strength of the oil agent is low mainly because the antistatic agent of the chemical fiber oil agent mostly contains metal ions or exists in the form of salt, so that the compatibility of the antistatic agent and polyester compounds or polyethers in the oil agent is poor, and the crown ether can improve the oil film strength mainly because the crown ether can generate a salt solution effect after being added, so that the compatibility of the antistatic agent and the polyester compounds or polyethers is improved, and the oil film strength of the oil agent is further improved. In addition, the crown ether has higher volatile point and excellent heat-resistant stability, the heat-resistant performance of the oil agent introduced with the crown ether is also obviously improved, and the application of the crown ether-containing oil agent provided by the invention obviously improves the processability of the fiber and is beneficial to preparing the fiber with excellent performance.
Pure PET fiber, because the surface glossiness is very high, usually translucent, its glossiness is not only determined by surface reflection light, but also related to transmitted light, meanwhile the fiber glossiness is also influenced by factors such as fiber surface state, fiber cross section shape and fiber internal structure, for example, the fiber with good macromolecule orientation degree, internal structure is more uniform, fiber reflection light intensity, glossiness is bright, therefore, can adjust and control the fiber glossiness through adding inorganic particle extinction or through adjusting fiber cross section shape and surface structure. In order to make the gloss of PET fiber approach to that of cotton fiber, a delustering agent can be added in the polymerization process, the common polyester delustering agent is anatase type titanium dioxide, in order to reduce the influence of anatase type titanium dioxide crystals on the gloss of polyester, a mixture of amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and amorphous silicon dioxide is adopted as inorganic matte particles, and the inorganic particles are uniformly dispersed in the PET to destroy the crystallization and orientation of the PET, so that the surface of the fiber is in a delustering state.
Has the advantages that:
(1) the full-dull network stretch yarn has the advantages of low glossiness and excellent performance.
(2) According to the preparation method of the full-dull network stretch yarn, the oiling agent containing the crown ether used in the oiling process has the characteristics of low viscosity, good heat resistance, high oil film strength, good smoothness and strong antistatic property, and the spinning stability and the fiber processability are improved.
(3) The invention relates to a preparation method of a full-dull network stretch yarn, which adopts a mixture of amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and amorphous silicon dioxide as inorganic matte particles, wherein the inorganic particles are uniformly dispersed in PET to destroy the crystallization and orientation of the PET so as to enable the surface of a fiber to be in a dull state.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling agents: uniformly mixing 2-hydroxymethyl-12-crown-4 with dodecyl phosphate potassium salt, trimethylolpropane laurate and sodium dodecyl sulfate at normal temperature, adding the mixture into No. 9 mineral oil, and uniformly stirring the mixture for 1h at 40 ℃ to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 2 parts of No. 9 mineral oil; 10 parts of trimethylolpropane laurate; 90 portions of 2-hydroxymethyl-12-crown-4; 8 parts of dodecyl phosphate potassium salt; 3 parts of sodium dodecyl sulfate; the content of crown ether in the prepared oil agent is 79.6 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 14.5 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 29.6mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) the oil has high oil film strength of 125N, surface tension of 24.8cN/cm, and specific resistance of 1.3X 108Omega cm; after oiling, the static friction coefficient (μ s) between the fibers (F/F) was 0.255 and the dynamic friction coefficient (μ d) was 0.266; after oiling, the static friction coefficient (mu s) between the fiber and the metal (F/M) is 0.203, the dynamic friction coefficient (mu d) is 0.320, and the prepared oil agent is prepared into an emulsion with the concentration of 15wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.7 wt%, the content of the amorphous silicon dioxide in the matting agent is 22 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 285 ℃; cooling air temperature: 22 ℃; speed of winding: 2700 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 620 m/min; t1 is 227 ℃; t2 is 225 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 19 percent, the fineness of 110dtex, the breaking strength of 2.1cN/dtex, the elongation at break of 22.0 percent, the crimp shrinkage of 38.5 percent, the crimp stability of 85 percent, the linear density deviation rate of 1.9 percent, the breaking strength CV value of 6.5 percent, the elongation at break CV value of 7.5 percent, the crimp shrinkage variation coefficient CV value of 7.8 percent, the boiling water shrinkage of 3.5 percent and the full-curl rate of 99 percent.
Example 2
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 15-crown ether-5, isotridecanol polyoxyethylene ether phosphate potassium salt, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into 10# mineral oil, and uniformly stirring the mixture at 43 ℃ for 1.5 hours to obtain an oil agent, wherein the addition amount of the components is as follows in parts by weight: 2 portions of No. 10 mineral oil; 15 parts of trimethylolpropane laurate; 70 portions of 15-crown ether-5; 10 parts of isomeric tridecanol polyoxyethylene ether phosphate potassium salt; 7 parts of sodium pentadecylsulfonate; the content of crown ether in the prepared oil agent is 67.30 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 13 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 28.1mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 123N, which is a high oil film strength of the oil, 25.1cN/cm, which is a surface tension of the oil, and 1.5X 10 of specific resistance8Omega cm; after oiling, the static friction coefficient (mus) between the fibers (F/F) was 0.257, and the dynamic friction coefficient (μ d) was 0.265; after oiling, the static coefficient of friction (μ s) between the fiber and the metal (F/M) was 0.205, and the dynamic coefficient of friction (μ d) was 0.323; when the prepared oil agent is used, water is used for preparing emulsion with the concentration of 14 wt%;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.5 wt%, the content of the amorphous silicon dioxide in the matting agent is 15wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 280 ℃; cooling air temperature: 20 ℃; speed of winding: 2500 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 550 m/min; t1 is 210 ℃; t2 is 210 ℃; the compressed air is 0.09 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 19.5 percent, the fineness of 75dtex, the breaking strength of 2.0cN/dtex, the elongation at break of 18 percent, the crimp shrinkage of 35 percent, the crimp stability of 75 percent, the linear density deviation rate of 1.9 percent, the breaking strength CV value of 6.9 percent, the elongation at break CV value of 7.9 percent, the crimp shrinkage variation coefficient CV value of 8.4 percent, the boiling water shrinkage of 3.0 percent and the full-length percentage of 98 percent.
Example 3
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-15-crown-5 with potassium dodecatetradecanol phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into No. 11 mineral oil, and uniformly stirring the mixture at 48 ℃ for 3 hours to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 8 parts of No. 11 mineral oil; 10 parts of trimethylolpropane laurate; 85 parts of 2-hydroxymethyl-15-crown-5; 11 parts of potassium dodecatetradecanol phosphate; 5 parts of sodium pentadecylsulfonate; the content of crown ether in the prepared oil agent is 70.83 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 11 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 30.1mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.94mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 125N, the oil film strength of the oil agent is high, the surface tension of the oil agent is 23.2cN/cm, and the specific resistance is 1.8 x 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.250, coefficient of dynamic friction (. mu.)d) Is 0.272; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.209, coefficient of dynamic friction (. mu.)d) 0.329, and the prepared oil agent is prepared into emulsion with the concentration of 10wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in the polyester is 2.0wt%, the content of the amorphous silicon dioxide in the matting agent is 30wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 290 ℃; cooling air temperature: 25 ℃; speed of winding: 3000 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 680 m/min; t1 is 245 ℃; t2 is 245 ℃; the air pressure is 0.12 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18 percent, the fineness of 150dtex, the breaking strength of 2.2cN/dtex, the elongation at break of 24 percent, the crimp shrinkage of 35.5 percent, the crimp stability of 76 percent, the linear density deviation rate of 1.8 percent, the breaking strength CV value of 6.3 percent, the elongation at break CV value of 7.2 percent, the crimp shrinkage variation coefficient CV value of 7.6 percent, the boiling water shrinkage of 4.0 percent and the full-curl rate of 99.5 percent.
Example 4
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-12-crown-4 with dodecyl phosphate potassium salt, trimethylolpropane laurate and sodium hexadecylsulfonate at normal temperature, adding the mixture into 12# mineral oil, and uniformly stirring the mixture for 2.5 hours at 40 ℃ to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 5 parts of No. 12 mineral oil; 95 parts of 2-hydroxymethyl-12-crown-4; 9 parts of dodecyl phosphate potassium salt; 2 parts of sodium hexadecyl sulfonate; the content of crown ether in the prepared oil agent is 85.58wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 9 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is lower and is (50 +/-r)0.01) DEG C, the kinematic viscosity is 29.5mm2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) the oil film strength of the oil agent is high and is 121N, the surface tension of the oil agent is 24.3cN/cm, and the specific resistance is 1.0X 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.260, coefficient of dynamic friction (. mu.)d) Is 0.263; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.202, coefficient of dynamic friction (. mu.)d) 0.330, and the prepared oil agent is prepared into an emulsion with the concentration of 19 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.6 wt%, the content of the amorphous silicon dioxide in the matting agent is 17 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 282 ℃; cooling air temperature: 21 ℃; speed of winding: 2550 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 580-m/min; t1 is 215 ℃; t2 is 216 ℃; the air pressure is 0.10 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18.9 percent, the fineness of 80dtex, the breaking strength of 2.03cN/dtex, the elongation at break of 20.5 percent, the crimp shrinkage of 35.8 percent, the crimp stability of 78 percent, the linear density deviation rate of 1.95 percent, the CV value of the breaking strength of 6.8 percent, the CV value of the elongation at break of 7.8 percent, the CV value of the crimp shrinkage variation coefficient of 8.4 percent, the shrinkage in boiling water of 3.2 percent and the full-curl rate of 98.4 percent.
Example 5
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: 15-crown-5 and isomeric tridecanol polyoxyethylene etherThe phosphate potassium salt, the trimethylolpropane laurate and the sodium dodecyl sulfate are uniformly mixed at normal temperature, added into the No. 13 mineral oil and uniformly stirred for 2 hours at 52 ℃ to obtain an oil agent, and the adding amount of the components is as follows according to parts by weight: 10 parts of No. 13 mineral oil; 5 parts of trimethylolpropane laurate; 70 portions of 15-crown ether-5; 8 parts of isomeric tridecanol polyoxyethylene ether phosphate potassium salt; 6 parts of sodium dodecyl sulfate; the content of crown ether in the prepared oil agent is 70.70 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 13.5 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 28.6mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.95mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 126N, which is a high oil film strength of the oil agent, 24.9cN/cm, which is a surface tension of the oil agent, and 1.2X 10 which is a specific resistance8Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.251, coefficient of dynamic friction (. mu.)d) Is 0.262; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.202, coefficient of dynamic friction (. mu.)d) 0.332, and the prepared oil agent is prepared into an emulsion with the concentration of 11 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.7 wt%, the content of the amorphous silicon dioxide in the matting agent is 18 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 286 ℃; cooling air temperature: 22 ℃; speed of winding: 2600 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 600 m/min; t1 is 220 ℃; t2 is 225 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18.5 percent, the fineness of 90dtex, the breaking strength of 2.08cN/dtex, the elongation at break of 21 percent, the crimp shrinkage of 38 percent, the crimp stability of 79 percent, the linear density deviation rate of 1.9 percent, the breaking strength CV value of 6.5 percent, the elongation at break CV value of 7.6 percent, the crimp shrinkage variation coefficient CV value of 8.2 percent, the boiling water shrinkage of 3.5 percent and the full-curl rate of 98.5 percent.
Example 6
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-15-crown-5 with potassium dodecatetradecanol phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into No. 14 mineral oil, and uniformly stirring the mixture at 55 ℃ for 1h to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 3 parts of No. 14 mineral oil; 10 parts of trimethylolpropane laurate; 75 parts of 2-hydroxymethyl-15-crown-5; 14 parts of potassium dodecatetradecanol phosphate; 7 parts of sodium pentadecylsulfonate; the content of crown ether in the prepared oil agent is 68.80 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 12 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 27.5mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.95mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 126N, which is a high oil film strength of the oil agent, 25.4cN/cm, which is a surface tension of the oil agent, and 1.6X 10 of a specific resistance8Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.255, coefficient of dynamic friction (. mu.)d) Is 0.267; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.203, coefficient of dynamic friction (. mu.)d) 0.330, and the prepared oil agent is prepared into an emulsion with the concentration of 20wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.8 wt%, the content of the amorphous silicon dioxide in the matting agent is 23 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 286 ℃; cooling air temperature: 23 ℃; speed of winding: 2800 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 620 m/min; t1 is 230 ℃; t2 is 232 ℃; the air pressure is 0.12 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18.4 percent, the fineness of 100dtex, the breaking strength of 2.09cN/dtex, the elongation at break of 22.6 percent, the crimp shrinkage of 37.5 percent, the crimp stability of 80 percent, the linear density deviation rate of 1.84 percent, the CV value of the breaking strength of 6.3 percent, the CV value of the elongation at break of 7.4 percent, the coefficient of variation CV of the crimp shrinkage of 7.0 percent, the shrinkage in boiling water of 3.7 percent and the full-curl rate of 98.8 percent.
Example 7
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 15-crown ether-5 with dodecyl phosphate potassium salt, trimethylolpropane laurate and sodium hexadecylsulfonate at normal temperature, adding the mixture into 15# mineral oil, and uniformly stirring the mixture for 2 hours at 41 ℃ to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 8 parts of No. 15 mineral oil; 20 parts of trimethylolpropane laurate; 100 portions of 15-crown ether-5; 15 parts of dodecyl phosphate potassium salt; 2 parts of sodium hexadecyl sulfonate; the content of crown ether in the prepared oil agent is 68.97 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 8.5 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 28.4mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.94mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) the oil film strength of the oil agent was 122N, the surface tension of the oil agent was 26.8cN/cm, and the specific resistance was 1.8X 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.263, coefficient of dynamic friction (. mu.)d) Is 0.268; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.210, kinetic frictionCoefficient of friction (. mu.)d) 0.320, and the prepared oil agent is prepared into an emulsion with the concentration of 13 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.9 wt%, the content of the amorphous silicon dioxide in the matting agent is 25 wt%, and the spinning process parameters of the POY yarn are as follows: temperature of extrusion: 288 ℃; cooling air temperature: 24 ℃; speed of winding: 2800 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 630 m/min; t1 is 230 ℃; t2 is 235 ℃; the compressed air is 0.09 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18.2 percent, the fineness of 120dtex, the breaking strength of 2.12cN/dtex, the elongation at break of 22.8 percent, the crimp shrinkage of 38.5 percent, the crimp stability of 82 percent, the linear density deviation rate of 1.82 percent, the CV value of the breaking strength of 6.3 percent, the CV value of the elongation at break of 7.2 percent, the CV value of the crimp shrinkage variation coefficient of 7.7 percent, the shrinkage in boiling water of 3.8 percent and the full-curl rate of 99 percent.
Example 8
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: uniformly mixing 2-hydroxymethyl-12-crown-4 with potassium dodecatetradecanol phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate at normal temperature, adding the mixture into No. 16 mineral oil, and uniformly stirring the mixture at 45 ℃ for 3 hours to obtain an oil agent, wherein the adding amount of each component is as follows in parts by weight: 9 parts of No. 16 mineral oil; 80 portions of 2-hydroxymethyl-12-crown-4; 12 parts of potassium dodecatetradecanol phosphate; 5 parts of sodium pentadecylsulfonate; the content of crown ether in the prepared oil agent is 83.33 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 14 wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is lowThe kinematic viscosity is 30.0mm at (50 +/-0.01) DEG C2(s) a kinematic viscosity of 0.93mm after preparation with water as an emulsion having a concentration of 10% by weight2The oil has a high oil film strength of 127N, a surface tension of 23.5cN/cm, and a specific resistance of 1.5X 108Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.262, coefficient of dynamic friction (. mu.)d) Is 0.273; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.208, coefficient of dynamic friction (. mu.)d) 0.328, and the prepared oil agent is prepared into emulsion with the concentration of 18 wt% by using water when in use;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in the polyester is 1.95 wt%, the content of the amorphous silicon dioxide in the matting agent is 28 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 290 ℃; cooling air temperature: 25 ℃; speed of winding: 2950 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 670 m/min; t1 is 240 ℃; t2 is 240 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18.1 percent, the fineness of 140dtex, the breaking strength of 2.16cN/dtex, the elongation at break of 23.5 percent, the crimp shrinkage of 37.8 percent, the crimp stability of 83 percent, the linear density deviation rate of 1.81 percent, the CV value of the breaking strength of 6.4 percent, the CV value of the elongation at break of 7.2 percent, the CV value of the variation coefficient of the crimp shrinkage of 7.8 percent, the shrinkage in boiling water of 3.9 percent and the full-curl rate of 99.2 percent.
Example 9
A preparation method of a full-dull network stretch yarn comprises the following steps:
(1) preparation of oiling oil agent: 2-hydroxymethyl-15-crown-5 and dodecyl phosphate potassium saltUniformly mixing trimethylolpropane laurate and sodium dodecyl sulfate at normal temperature, and uniformly stirring at 55 ℃ for 3 hours to obtain an oil agent, wherein the addition amount of each component is as follows according to parts by weight: 15 parts of trimethylolpropane laurate; 90 portions of 2-hydroxymethyl-15-crown-5; 8 parts of dodecyl phosphate potassium salt; 7 parts of sodium dodecyl sulfate; the content of crown ether in the prepared oil agent is 81.81 wt%, the high temperature resistance of the oil agent is excellent, and the thermal weight loss is 10wt% after the oil agent is heated for 2 hours at 200 ℃; the viscosity of the oil agent is low, and the kinematic viscosity is 29.7mm at the temperature of (50 +/-0.01) ° C2(s) a kinematic viscosity of 0.94mm after preparation with water as an emulsion having a concentration of 10% by weight2(s) 126N, which is a high oil film strength of the oil agent, 24.8cN/cm, which is a surface tension of the oil agent, and 1.8X 10 which is a specific resistance8Omega cm; coefficient of static friction (. mu.) between fibres (F/F) after oilings) 0.250, coefficient of dynamic friction (. mu.)d) Is 0.264; after oiling, the coefficient of static friction (μ) between the fiber and the metal (F/M)s) 0.210, coefficient of dynamic friction (. mu.)d) 0.321, when the prepared oil agent is used, water is used for preparing emulsion with the concentration of 10 wt%;
(2) the POY yarn is prepared by metering, extruding by a composite spinneret plate, cooling, oiling and winding a polyester melt, namely the full-dull network stretch yarn, wherein a matting agent is dispersed in the polyester melt, the matting agent is a mixture of calcium carbonate and amorphous silicon dioxide, the content of the matting agent in the polyester is 2.0wt%, the content of the amorphous silicon dioxide in the matting agent is 29 wt%, and the POY yarn has the following spinning technological parameters: temperature of extrusion: 290 ℃; cooling air temperature: 25 ℃; speed of winding: 2500 m/min;
(3) the POY is processed by a yarn guide tube, a network, heating and stretching, false twisting, heat setting and winding to form DTY, namely the full dull network stretch yarn, wherein the spinning process parameters of the DTY are as follows: the spinning speed is 550 m/min; t1 is 245 ℃; t2 is 230 ℃; the air pressure is 0.11 MPa; the rotation speed of the oil tanker is 0.50 r/min.
The finally prepared full-dull network stretch yarn has the gloss of 18 percent, the fineness of 125dtex, the breaking strength of 2.17cN/dtex, the elongation at break of 23.8 percent, the crimp shrinkage of 38.2 percent, the crimp stability of 83 percent, the linear density deviation rate of 1.82 percent, the breaking strength CV value of 6.4 percent, the elongation at break CV value of 7.5 percent, the crimp shrinkage variation coefficient CV value of 7.8 percent, the boiling water shrinkage of 3.85 percent and the full-curl rate of 99 percent.
Claims (5)
1. The preparation method of the full-dull network stretch yarn is characterized by comprising the following steps: the polyester melt is metered, extruded, cooled, oiled and wound to prepare POY (polyester pre-oriented yarn), and the POY is processed by a yarn guide pipe, a network, heating, stretching, false twisting, heat setting and winding to prepare DTY (draw textured yarn), namely full-dull network stretch yarn;
a matte agent is dispersed in the polyester melt, and the matte agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, or a mixture of calcium carbonate and amorphous silicon dioxide;
the oiling oil agent contains crown ether, and the content of the crown ether is 67.30-85.58 wt%;
the crown ether is 2-hydroxymethyl-12-crown-4, 15-crown ether-5 or 2-hydroxymethyl-15-crown-5;
when the oil agent is used, preparing an emulsion with the concentration of 10-20 wt% by using water;
the thermal weight loss of the oil agent after heating treatment for 2 hours at 200 ℃ is less than 15 wt%;
the kinematic viscosity of the oil agent is 27.5-30.1 mm at the temperature of (50 +/-0.01) ° C2The kinematic viscosity of the oil agent prepared from water into 10wt% emulsion is 0.93-0.95 mm2/s；
The oil film strength of the oil agent is 121-127N;
the surface tension of the oil agent is 23.2-26.8 cN/cm, and the specific resistance is 1.0 x 108~1.8×108Ω·cm；
After oiling, the static friction coefficient between the fibers is 0.250-0.263, and the dynamic friction coefficient is 0.262-0.273;
after oiling, the static friction coefficient between the fiber and the metal is 0.202-0.210, and the dynamic friction coefficient is 0.320-0.332;
the fineness of the full-dull network stretch yarn is 75-150 dtex, the breaking strength is more than or equal to 2.0cN/dtex, the elongation at break is 22.0 +/-2.0%, the linear density deviation rate is less than or equal to 2.0%, the breaking strength CV value is less than or equal to 7.0%, the elongation at break CV value is less than or equal to 8.0%, the variation coefficient CV value of the crimp shrinkage is less than or equal to 8.5%, the boiling water shrinkage is 3.5 +/-0.5%, and the full-curl rate is more than or equal to 98%.
2. The preparation method of the full dull network stretch yarn according to claim 1, wherein the addition amount of each component in the oil agent is as follows in parts by weight:
0-10 parts of mineral oil;
0-20 parts of trimethylolpropane laurate;
70-100 parts of crown ether;
8-15 parts of phosphate potassium salt;
2-7 parts of sodium alkylsulfonate;
the preparation method of the oil agent comprises the following steps: uniformly mixing all the components and then uniformly stirring to obtain an oil agent;
the mixing is carried out at normal temperature, the stirring temperature is 40-55 ℃, and the stirring time is 1-3 h.
3. The preparation method of the full dull network stretch yarn according to claim 1 or 2, wherein the POY yarn has the following spinning process parameters:
temperature of extrusion: 280-290 ℃;
cooling air temperature: 20-25 ℃;
speed of winding: 2500-3000 m/min;
the spinning process parameters of the DTY are as follows:
spinning speed: 550-680 m/min;
T1：210~245℃；
T2：210~245℃；
and (3) air compression: 0.09-0.12 MPa;
oil wheel rotating speed: 0.50 r/min.
4. The method for preparing the full dull network stretch yarn according to claim 1, wherein the full dull network stretch yarn is made of polyester;
the full-dull network stretch yarn has the glossiness of less than 20%, the crimp shrinkage rate of more than or equal to 35% and the crimp stability of 75-85%.
5. The method for preparing the full dull network stretch yarn according to claim 4, wherein the content of the matte agent in the polyester is 1.5-2.0 wt%, and the content of the amorphous silica in the matte agent is 15-30 wt%.
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