CN112709074B - Preparation method of modified polyester fiber yarn - Google Patents
Preparation method of modified polyester fiber yarn Download PDFInfo
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- CN112709074B CN112709074B CN202011595373.XA CN202011595373A CN112709074B CN 112709074 B CN112709074 B CN 112709074B CN 202011595373 A CN202011595373 A CN 202011595373A CN 112709074 B CN112709074 B CN 112709074B
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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
- 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
- D06M15/55—Epoxy resins
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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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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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
- 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
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Abstract
The invention discloses a preparation method of modified polyester fiber yarns, which relates to the technical field of modification of traditional synthetic fibers and comprises the following steps: (1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying; (2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition; (3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn. The prepared modified polyester fiber is not easy to generate coating cracks or the condition that different parts break successively, the elongation at break is obviously reduced, and the service life of the fiber is prolonged.
Description
Technical Field
The invention relates to the technical field of traditional synthetic fiber modification, in particular to a preparation method of modified polyester fiber yarns.
Background
Polyester (PET) fibers are synthetic fibers spun from a fiber-forming polymer formed by connecting various chain links in a macromolecular chain through ester groups, belong to high molecular compounds, have been widely focused and applied in the fields of daily chemicals, industry and the like in recent years due to the particularly outstanding characteristics of good wrinkle resistance and shape retention, high strength and elastic recovery capability and the like, have large market demand, and are the first major varieties of synthetic fibers at present.
An important performance criterion for filaments is the elongation at break, which determines the processing conditions of the fiber and the performance properties of the article, and the elongation at break of a fiber is generally expressed in terms of the relative elongation at break, i.e. the ratio of the elongation at break of the fiber to its initial length, expressed in percent. It is an index that characterizes the softness and elasticity properties of the fiber. The greater the elongation at break indicates the better the softness and elasticity, and the desired elongation at break should be provided depending on the use of the fiber.
The polyester fiber yarn is used for manufacturing polyester fiber cloth, can be used for a land reclamation after fillers such as stones and the like are wrapped by the polyester fiber cloth, and has the requirement of difficult deformation on the polyester fiber cloth, so the polyester fiber cloth has higher requirement on the elongation at break, and the lower the elongation at break is, the better the elongation at break is (difficult deformation).
However, the elongation at break of the current polyester fiber yarn is larger than 12%, and when the yarn is put into the application, the deformation rate of the polyester fiber cloth is too large due to too high elongation at break, so that the fillers such as wrapped stones are easy to fall off, and the effect of the sea reclamation is affected.
In addition, the technology for reducing the elongation at break of the polyester fiber yarn commodity through modification disclosed at present usually adopts a material with small contractibility to form a coating on the surface of the polyester fiber yarn, or adopts a fiber with low elongation at break to blend with the polyester fiber yarn, so as to neutralize the higher elongation at break of the polyester fiber yarn, and comprises the operation of heat treatment and the like on the blended or coated fiber yarn, the action principle is different, the method can cause that when the fiber yarn is stressed, all parts (different fiber yarns in the blending or the coating and the core part) in the microstructure are stressed unevenly, fine cracks and even direct fracture can occur on the material with low elongation at break/small contraction partially in a short time, particularly when the obtained material is used in an environment with large temperature difference or complex external acting force, the occurrence period of the phenomenon is shorter, and the service life of a fiber product is seriously influenced, not only greatly increases the use cost, but also can cause potential safety hazard.
Disclosure of Invention
The present application provides a new method for self-modifying polyester fiber yarn by a special method, which does not solve the problems of the conventional polyester fiber or the modified polyester fiber at present, and the scheme is as follows:
a preparation method of modified polyester fiber yarns comprises the following steps:
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
Preferably, the polyester fiber yarn in the step (1) is obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
Preferably, the modified coating in step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder.
Preferably, the modified coating comprises the following components in parts by weight: 80-100 parts of epoxy resin, 50-80 parts of curing agent, 0.1-0.4 part of sorbitan fatty acid ester and 3-10 parts of silicon dioxide powder.
Preferably, the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) is mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
Eta is constant and takes a positive integer of 3-6.
Preferably, the primary drying in the step (1) is carried out at the drying temperature of 25-30 ℃ for 10-30 s.
Preferably, the epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
Preferably, the stretching in step (2) is performed with the applied tensile strength of 2.0-4.0g/d, the heat treatment temperature of 100-130 ℃ and the heat treatment time of 50-200 min.
Preferably, the stretching in step (3) applies a tensile strength of 3.0-8.0g/d, a heat treatment temperature of 140-170 ℃ and a heat treatment time of 5-10 min.
Preferably, the stretching in the step (2) is performed with the applied tensile strength R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Advantageous effects
The invention has the beneficial effects that:
the invention adopts the new modified coating and limits the proportional relation between the coating quality of the coating layer and the polyester fiber yarn quality through a specific algorithm, so that the coating thickness of the product surface and the performance after heat treatment can meet the mechanical property requirement, the surface coating is not easy to crack after the product is used for a long time, and the service life is prolonged.
It is known to those skilled in the art that resin materials are not shaped before or during curing and that molecules are moving relative to each other while a stretching force is applied to them, in principle without affecting their mechanical properties. Meanwhile, as the skilled person knows, stretching in the process of preparing the polyester fiber yarn may have a certain influence on the mechanical properties, however, the raw material used in the present invention is a finished polyester fiber yarn, the stretching operation does not exist in the process of preparing the polyester fiber yarn itself, and we have carried out a heat treatment test (with the same parameters as in the examples) under the condition of applying stretching force on the polyester fiber yarn alone, and found that the elongation at break of the polyester fiber yarn is not influenced, but the elongation at break of the polyester fiber yarn is greatly reduced by combining the specific stretching pressure and the heat treatment carried out simultaneously in the present application, which was not anticipated by the inventor in advance.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The following examples and comparative examples are parallel runs, with the same processing steps and parameters, unless otherwise indicated. The preparation method of the modified coating in the following examples is as follows: and (3) uniformly mixing the epoxy resin and the curing agent, adding other raw materials, and uniformly mixing. Ultrasonic debubbling may be used if bubbles are present.
Example 1 preparation of a modified polyester yarn:
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 100 parts of epoxy resin, 80 parts of curing agent, 0.2 part of sorbitan fatty acid ester and 5 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 3.0g/d, the heat treatment temperature is 100 ℃, and the heat treatment time is 90 min.
And (3) stretching, wherein the applied tensile strength is 7.2g/d, the heat treatment temperature is 170 ℃, and the heat treatment time is 10 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Subsequent performance detection shows that the coating thickness on the surface of the product and the performance after heat treatment can meet the requirement on mechanical performance by adopting the new modified coating and limiting the proportional relation between the coating quality of the coating layer and the polyester fiber quality through a specific algorithm, the surface coating is not easy to crack after the product is used for a long time, and the service life is prolonged.
Example 2 preparation of a modified polyester yarn:
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 80 parts of epoxy resin, 50 parts of curing agent, 0.4 part of sorbitan fatty acid ester and 10 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 2.0g/d, the heat treatment temperature is 100 ℃, and the heat treatment time is 50 min.
And (3) stretching, wherein the applied tensile strength is 3.96g/d, the heat treatment temperature is 140 ℃, and the heat treatment time is 5 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Example 3 preparation of a modified polyester yarn:
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 100 parts of epoxy resin, 70 parts of curing agent, 0.1 part of sorbitan fatty acid ester and 3 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 4.0g/d, the heat treatment temperature is 130 ℃, and the heat treatment time is 70 min.
And (3) stretching, wherein the applied tensile strength is 6.1g/d, the heat treatment temperature is 140 ℃, and the heat treatment time is 8 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Comparative example 1 preparation of modified polyester fiber yarn
Epoxy resin E44 and curing agent phthalic anhydride are mixed evenly according to the mass ratio of 100:70, then 6 percent of quartz sand with the fineness of 70 meshes is added, and the mixture is stirred and mixed to obtain the modified resin coating.
The prepared modified resin coating is coated on polyester fiber yarns and then cured, wherein the curing temperature is controlled at 150 ℃, and the curing time is controlled at 2 hours.
And (3) putting the polyester fiber yarns coated and cured by the modified resin coating into an industrial oven for heat treatment, wherein the temperature is controlled at 140 ℃, and the time is controlled at 20 minutes. Modified polyester fiber D1 was obtained.
Elongation at break 8.6%.
Comparative example 2 preparation of a modified polyester fiber yarn (different from example 1 in modified dope):
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The preparation method of the modified coating comprises the following steps: epoxy resin E44 and curing agent phthalic anhydride are mixed evenly according to the mass ratio of 100:70, then 6 percent of quartz sand with the fineness of 70 meshes is added, and the mixture is stirred and mixed to obtain the modified coating.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0Is provided with
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 3.0g/d, the heat treatment temperature is 100 ℃, and the heat treatment time is 90 min.
And (3) stretching, wherein the applied tensile strength is 7.2g/d, the heat treatment temperature is 170 ℃, and the heat treatment time is 10 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Comparative example 3 preparation of a modified polyester fiber yarn (different from example 1 in coating ratio calculation algorithm):
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 100 parts of epoxy resin, 80 parts of curing agent, 0.2 part of sorbitan fatty acid ester and 5 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 3.0g/d, the heat treatment temperature is 100 ℃, and the heat treatment time is 90 min.
And (3) stretching, wherein the applied tensile strength is 7.2g/d, the heat treatment temperature is 170 ℃, and the heat treatment time is 10 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Comparative example 4 preparation of a modified polyester fiber yarn (different from example 1 in the heat treatment condition algorithm):
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) vertical, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 100 parts of epoxy resin, 80 parts of curing agent, 0.2 part of sorbitan fatty acid ester and 5 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 3.0g/d, the heat treatment temperature is 100 ℃, and the heat treatment time is 90 min.
And (3) stretching, wherein the applied tensile strength is 7.0g/d, the heat treatment temperature is 140 ℃, and the heat treatment time is 10 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3If the parameter relationship does not conform to the calculationRelationship of law
Comparative example 5 preparation of a modified polyester fiber yarn (different from example 1 in the heat treatment method and no directional difference):
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) and (3) keeping the fiber yarn obtained in the step (2) horizontal, and performing secondary heat treatment under a stretching condition to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 100 parts of epoxy resin, 80 parts of curing agent, 0.2 part of sorbitan fatty acid ester and 5 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
And (3) stretching in the step (2), wherein the applied tensile strength is 3.0g/d, the heat treatment temperature is 100 ℃, and the heat treatment time is 90 min.
And (3) stretching, wherein the applied tensile strength is 7.2g/d, the heat treatment temperature is 170 ℃, and the heat treatment time is 10 min.
Setting the stretching in the step (2) and applying the tensile strength as R2Heat treatment temperature T2And (3) stretching, wherein the applied tensile strength is R3Heat treatment temperature T3Then there is
Comparative example 6 preparation of a modified polyester fiber yarn (different from example 1 in the heat treatment method, no stretching force is applied):
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) carrying out primary heat treatment on the fiber yarn obtained in the step (1);
(3) and (3) carrying out secondary heat treatment on the fiber yarn obtained in the step (2) to obtain the modified polyester fiber yarn.
The polyester fiber yarn in the step (1) is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol. The dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder. The epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
The modified coating comprises the following components in parts by weight: 100 parts of epoxy resin, 80 parts of curing agent, 0.2 part of sorbitan fatty acid ester and 5 parts of silicon dioxide powder.
Setting the mass of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as mtThe mass of the polyester fiber yarn is m0The mass of the sorbitan fatty acid ester in the modified coating is mzhThe mass of the silicon dioxide powder is mgThen there is
And (2) performing primary drying in the step (1), wherein the drying temperature is 25 ℃, and the drying time is 10 s.
The heat treatment temperature in the step (2) is 100 ℃, and the heat treatment time is 90 min.
The heat treatment temperature in the step (3) is 170 ℃, and the heat treatment time is 10 min.
And (3) performance detection:
blank example: outsourced unmodified polyester fiber, supplied by suzhou harbour rock and soil limited.
First, coating stability (crack resistance):
the experimental method comprises the following steps: the fiber products of the above examples, comparative examples and blank were respectively subjected to the same conditions: completely immersing in water, changing the water flow direction every 30s at the flow speed of 4m/s, ensuring that the water temperature is 28 ℃ at the highest and 10 ℃ at the lowest, changing the water temperature between the highest temperature and the lowest temperature by raising/lowering the temperature at the speed of 0.6 ℃/min, and observing the fracture condition of the modified polyester fiber or the crack condition of the surface coating at 30 days after the test begins, wherein the results are as follows:
the representative filament breakage or surface coating cracking did not occur in any of examples 1 to 3.
Comparative example 1 the fiber yarn broke 8%, and almost all of the fiber yarn surface coating showed significant fine cracks (broke); comparative example 2 the fiber yarn was broken by 6%, and almost all of the fiber yarn surface coating showed remarkable fine cracks (broken portions); comparative example 3 the fiber filaments broke 6%, and the fiber filament surface coatings all showed significant fine cracks (breaks) accounting for about 70%; the comparative examples 4, 5 and 6 showed almost no representative filament breakage or surface coating cracking. The blank example had 17% broken filaments.
II, detecting elongation at break:
the detection method of the elongation at break of the polyester fiber comprises the following steps: testing the fiber yarn to be tested by a microcomputer control electronic universal testing machine, and specifically comprising the following steps: the fiber frame to be measured is placed in a clamp of a microcomputer-controlled electronic universal tester, the stretching speed is 100mm/min, and the breaking elongation of the fiber frame is calculated when the fiber frame is broken. The microcomputer control electronic universal tester equipment model: ETM 204C; the manufacturer: shenzhen ten thousand test verification equipment Limited.
The modified polyester fiber yarns of the examples, the comparative examples and the blank examples or the unmodified polyester fiber yarns are detected according to the detection method of the elongation at break, and the detection results are as follows:
elongation at break (%):
examples 1 to 3 are respectively: 3.7%, 4.7%, 4.9%;
comparative examples 1 to 6 are: 8.6%, 5.7%, 6.9%, 6.6%, 6.9%, 7.3%.
Blank examples are: 12.6 percent.
Compared with the examples 1-3, the modified coating formula provided by the invention can avoid the surface coating of the fiber yarn from being broken, enhance the integral strength of the fiber yarn and prolong the service life; as can be seen from comparison between comparative example 3 and examples 1-3, the algorithm provided by the invention defines the proportional relationship between the modified coating and the polyester fiber filaments of the core, and when the proportional relationship meets the requirements of the invention, the elongation at break of the product fiber can be obviously reduced, and the service life of the modified coating can be increased to a certain extent; as can be seen from comparison of comparative examples 4, 5 and 6 with examples 1 to 3, the fiber filament direction, drawing, and the algorithmic relationship of the parameters between the two drawing steps and the two heat treatment steps in the heat treatment process defined in the present application all enable a significant reduction in the elongation at break of the modified fiber filament product.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the embodiments and examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. A preparation method of modified polyester fiber yarn is characterized by comprising the following steps: the method comprises the following steps:
(1) coating the modified coating on the surface of the polyester fiber yarn, and primarily drying;
(2) keeping the fiber yarn obtained in the step (1) horizontal in the fiber yarn direction, and carrying out primary heat treatment under the stretching condition;
(3) keeping the fiber yarn obtained in the step (2) vertical, and carrying out secondary heat treatment under a stretching condition to obtain a modified polyester fiber yarn;
setting the quality of the modified coating coated on the surface of the polyester fiber yarn in the step (1) as follows
The mass of the polyester fiber yarn is
The modified paint contains sorbitan fatty acid ester in the mass ratio of
Mass of silicon dioxide powder
Is composed of
Then there is
，
Is constant and takes a positive integer of 3-6;
setting the stretching in the step (2) to apply the tensile strength of
The heat treatment temperature is
The stretching in the step (3) is carried out, and the applied tensile strength is
The heat treatment temperature is
Then there is
；
The modified coating in the step (1) comprises epoxy resin, a curing agent, sorbitan fatty acid ester and silicon dioxide powder.
2. The method for preparing modified polyester fiber yarn according to claim 1, wherein: the modified coating comprises the following components in parts by weight: 80-100 parts of epoxy resin, 50-80 parts of curing agent, 0.1-0.4 part of sorbitan fatty acid ester and 3-10 parts of silicon dioxide powder.
3. The method for preparing modified polyester fiber yarn according to claim 1, wherein: and (2) performing primary drying in the step (1), wherein the drying temperature is 25-30 ℃, and the drying time is 10-30 s.
4. The method for preparing modified polyester fiber yarn according to claim 1, wherein: the stretching in the step (2) is carried out, wherein the applied tensile strength is 2.0-4.0g/d, the heat treatment temperature is 100-130 ℃, and the heat treatment time is 50-200 min.
5. The method for preparing modified polyester fiber yarn according to claim 1, wherein: the stretching in the step (3) is carried out, wherein the applied tensile strength is 3.0-8.0g/d, the heat treatment temperature is 140-170 ℃, and the heat treatment time is 5-10 min.
6. The method for preparing modified polyester fiber yarn according to claim 1, wherein: the polyester fiber yarn is obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol; the dibasic acid is terephthalic acid, and the dihydric alcohol is ethylene glycol.
7. The method for preparing modified polyester fiber yarn according to claim 1, wherein: the epoxy resin is epoxy resin E44; the curing agent is phthalic anhydride.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176670A (en) * | 1995-12-30 | 1998-03-18 | 株式会社科隆 | Polyester filamentary yarn, polyester tyre cord and production thereof |
| JP2003011217A (en) * | 2001-07-04 | 2003-01-15 | Toray Ind Inc | Biaxially stretched polyester film for processing |
| JP2009203594A (en) * | 2008-01-30 | 2009-09-10 | Toray Ind Inc | Polyester fiber cord for reinforcing rubber |
| JP2011205930A (en) * | 2010-03-29 | 2011-10-20 | Toray Monofilament Co Ltd | Monofilament for fishing line, method for producing the same, and fishing line |
| CN103306140A (en) * | 2013-05-12 | 2013-09-18 | 北京化工大学 | Pretreatment method of polyester fiber surface |
| CN109680368A (en) * | 2018-12-14 | 2019-04-26 | 南昌大学 | A kind of preparation method of modified polyester fiber silk |
| CN109736089A (en) * | 2018-12-14 | 2019-05-10 | 南昌大学 | A kind of preparation method of modified polyester fiber silk |
-
2020
- 2020-12-29 CN CN202011595373.XA patent/CN112709074B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176670A (en) * | 1995-12-30 | 1998-03-18 | 株式会社科隆 | Polyester filamentary yarn, polyester tyre cord and production thereof |
| JP2003011217A (en) * | 2001-07-04 | 2003-01-15 | Toray Ind Inc | Biaxially stretched polyester film for processing |
| JP2009203594A (en) * | 2008-01-30 | 2009-09-10 | Toray Ind Inc | Polyester fiber cord for reinforcing rubber |
| JP2011205930A (en) * | 2010-03-29 | 2011-10-20 | Toray Monofilament Co Ltd | Monofilament for fishing line, method for producing the same, and fishing line |
| CN103306140A (en) * | 2013-05-12 | 2013-09-18 | 北京化工大学 | Pretreatment method of polyester fiber surface |
| CN109680368A (en) * | 2018-12-14 | 2019-04-26 | 南昌大学 | A kind of preparation method of modified polyester fiber silk |
| CN109736089A (en) * | 2018-12-14 | 2019-05-10 | 南昌大学 | A kind of preparation method of modified polyester fiber silk |
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