KR100519596B1 - Phosphorescent elastic yarn and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a phosphorescent elastic yarn and a method for manufacturing the same, which can be visually identified not only under ultraviolet light but also under natural light, and have a strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence expression of 0.1 to 3% by weight relative to the total weight of the yarn. It is made by inserting into the spinning polymer in a quantity and spinning to attach to the surface of the elastic yarn formed or spun formed, thereby excellent phosphorescence expression effect than the elastic yarn produced by the conventional method, 10 denier even in the coated state It is possible to know whether the elastic yarns that are going together are clearly visible, thereby making it possible to visually identify not only under ultraviolet light but also under natural light. It is effective to prevent.

Description

Phosphorescent elastic yarn and manufacturing method

The present invention relates to a phosphorescent elastic yarn and a method of manufacturing the same. More specifically, the present invention relates to a phosphorescent elastic yarn and a method for manufacturing the same which can be visually identified under ultraviolet light as well as under natural light.

There are many fields of using elastic yarns, and among them, the process of knitting and weaving elastic yarns with natural or artificial fibers is common worldwide. There are a wide variety of shapes from core spun yarn (CSY) coated with elastic yarn using cotton or rayon as a covering yarn, as well as various coated yarns coated with elastic yarn with synthetic fibers such as nylon and polyester. Coated elastic yarns are widely used in making woven and knitted fabrics requiring elasticity. However, a problem that often occurs in the process of coating the elastic yarn is the mass production of the defective product in which only the coated yarn is wound without the elastic yarn because the yarn is not found early on the production site. This problem can lead to a decrease in the utilization rate of the company that manufactures the coated elastic yarn, waste of the coated yarn, and the loss of corporate image. It is a situation that has been demanded.

The most commonly used method is to include a titanium or magnesium-based inorganic additive in the elastic yarn to emit a dark purple color under an ultraviolet light source. To sort. However, this conventional method is difficult to identify when the thickness of the elastic yarn is as low as 40 denier or less, and even thicker elastic yarn is difficult to identify with a portable UV irradiation device at the production site. There is a problem that can only be observed under the condition of the elastic yarn in the coated yarn to observe under. In addition, the inorganic additive contained in the elastic yarn is not added to solve the above problems in the manufacturing process of the coated elastic yarn, but is added for the purpose of quenching effect of the coated elastic yarn, prevention of adhesion, and improvement of chlorine resistance. Was not. In addition, to improve this problem, as an additive capable of fluorescence expression by ultraviolet irradiation, stilbene-based fluorescent brightener, pyrazolone-based fluorescent brightener, imidazol-based fluorescent brightener, oxazole Fluorescent brighteners such as (Oxazole) fluorescent brighteners, Coumarin fluorescent brighteners, Rhodamine fluorescent brighteners, and Fluorescein fluorescent brighteners may be used in polymers or emulsions. A method of adding about 0.1 to 20% by weight is proposed in Korean Patent Application No. 2002-11268, but this method has a disadvantage in that a light source emitting ultraviolet rays is necessary to identify the elastic yarn.

In the present invention, in order to solve the problems of the prior art as described above, the strontium-alumina interface (SrAl ₂ O ₄ ) is an inorganic additive that emits phosphorescence under both natural and ultraviolet light sources so that the naked eye can be identified not only under ultraviolet light but also under natural light. It is an object of the present invention to provide a phosphorescent elastic yarn and a method for producing the same, which are easy to grasp whether an elastic yarn exists in the coated yarn, regardless of the presence or absence of an ultraviolet light source, using a method of injecting the polymer into a polymer or a spinning oil.

Phosphorescent elastic yarn according to the present invention is produced or spun by spinning the strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence in the spinning polymer in an amount of 0.1 to 3% by weight based on the total weight of the yarn It is made by adhering to the surface of the formed elastic yarn.

The strontium-alumina solid solution may be added to the surface of the elastic yarn after being injected into the spinning oil of a polydimethylsiloxane system.

The strontium-alumina solid solution is injected into the polydimethylsiloxane-based spinning emulsion in an amount of 0.1 to 3% by weight based on the weight of the emulsion stock solution, and then the mixture of the strontium-alumina solid solution and the emulsion is 2 to 7% by weight. Can be attached to

The strontium-alumina solid solution may be applied by grinding to a particle size of 0.1 to less than 5 microns.

In the manufacturing method of the phosphorescent elastic yarn according to the present invention, in the manufacturing process of ordinary elastic yarn, (1) in order to express the phosphorescence strontium-alumina solid solution (SrAl ₂ O ₄ ) in an amount of 0.1 to 3% by weight relative to the total weight of the yarn A kneading step of kneading by throwing into the spinning polymer; And (2) an elastic yarn forming step of spinning the kneaded spinning polymer through a conventional spinneret according to a conventional spinning method to form an elastic yarn.

In addition, the method for producing a phosphorescent elastic yarn according to the present invention, (1) an elastic yarn forming step of forming an elastic yarn in accordance with a conventional spinning process; (2) mixing strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence expression in an amount of 0.1 to 3 wt% based on the weight of the emulsion stock solution into a polydimethylsiloxane-based spinning emulsion; And (3) an adhesion step of applying the emulsion mixture obtained in the incorporating step to the surface of the elastic yarn by applying an amount of 2 to 7% by weight based on the weight of the yarn.

Hereinafter, the present invention will be described in detail with reference to specific examples.

Phosphorescent elastic yarn according to the present invention is produced or spun by spinning the strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence in the spinning polymer in an amount of 0.1 to 3% by weight based on the total weight of the yarn It is characterized by being made by attaching to the surface of the formed elastic yarn.

The segmented polyurethane polymer used to prepare the elastic yarn according to the present invention is prepared by reacting organic diisocyanate and polymer diol to prepare a polyurethane precursor as known in the art, and then dissolving it in an organic solvent, followed by diamine and Prepared by reacting with monoamines. Examples of the organic diisocyanate include diphenylmethane-4,4′-diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, butylene diisocyanate, hydrogenated P, P-methylene diisocyanate and the like. As the polymer diol, polytetramethylene ether glycol, polypropylene glycol, polycarbonate diol, and the like may be used. The diamines are used as chain extenders, and examples thereof include ethylenediamine, prefilenediamine, hydrazine, and the like. In addition, the monoamine is used as a chain terminator, and examples thereof include diethylamine, monoethanolamine, dimethylamine, and the like. In addition, as an additive, UV stabilizers, antioxidants, NO _x gas yellowing agents, anti-sticking agents, dyeing enhancers, chlorine-resistant agents and the like can be used, all of which are known to those skilled in the art to be commercially available. Things.

For the purpose of the present patent, when preparing an additive to be added into a polymer, the inorganic additive strontium-alumina solid solution is ground to a particle size of 0.1 to less than 5 microns to express phosphorescence under a natural light and an ultraviolet light source. It is added in an amount of%, mixed with the additives, and then added to a polymer, the polymer is aged for a suitable time, and then spun through a spinneret, and then wound at a certain draw ratio to prepare a phosphorescent elastic yarn winding. In the above, when the particle diameter of the strontium-alumina solid solution of the inorganic additive is 5 microns or more, the dispersibility is poor during mixing and aging with the polymer, and workability is degraded during spinning through the spinneret. In addition, when the input content is less than 0.1% by weight, there may be a problem that the light-emitting effect is not visible to the level that is not visible to the naked eye, on the contrary, when the content exceeds 3% by weight, the side effect that the radiation workability is deteriorated This can be.

On the other hand, when a phosphorescent substance is administered in the polymer, and thus a permanent phosphorescence expression effect is not required, the polymer and additive manufacturing method is the same as in the general case, and spinning and winding. The inorganic additive is applied to the spinning emulsion applied during winding. When the strontium-alumina solid solution is added or subtracted according to the use within the amount of 0.1 to 3% by weight of the spinning emulsion stock solution, and applied when winding up the elastic yarn, the surface of the elastic yarn is coated with an oil and coated in the process of manufacturing a coated elastic yarn. After giving the advantage of easy identification, the phosphorescent expression material is easily detached from the elastic yarn when refining and processing the woven and woven fabric with the coated elastic yarn, so that the application method of the phosphorescent expression material can be changed according to the demand of downstream. have. In this case, too, when the particle size of the solid additive strontium-alumina solid solution is 5 microns or more, the storage stability of the emulsion is poor, and when the input amount is 3% by weight or more, it is difficult to uniformly disperse the inorganic additive in the emulsion. A phenomenon in which a scum is generated on the back appears. As the spinning oil, a conventional spinning oil of polydimethylsiloxane may be used, and the spinning oil may also be understood to be well known to those skilled in the art to purchase and use it.

In the manufacturing method of the phosphorescent elastic yarn according to the present invention, in the manufacturing process of ordinary elastic yarn, (1) in order to express the phosphorescence strontium-alumina solid solution (SrAl ₂ O ₄ ) in an amount of 0.1 to 3% by weight relative to the total weight of the yarn A kneading step of kneading by throwing into the spinning polymer; And (2) an elastic yarn forming step of spinning the kneaded spinning polymer through a conventional spinneret according to a conventional spinning method to form an elastic yarn.

According to the above-described manufacturing method, in the production of a conventional elastic yarn, the strontium-alumina solid solution for phosphorescence expression is first mixed in the spinning polymer which is a raw material of the elastic yarn, kneaded, and then spun according to a conventional spinning method. It is characterized in that it is made of elastic yarn. As described above, the preparation of the elastic yarn except for first kneading the strontium-alumina solid solution for phosphorescence expression in the spinning polymer is the same as or similar to that of a conventional elastic yarn, and can be easily understood by those skilled in the art.

The method for producing a phosphorescent elastic yarn according to the present invention also includes (1) an elastic yarn forming step of forming an elastic yarn according to a conventional spinning process; (2) mixing strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence expression in an amount of 0.1 to 3 wt% based on the weight of the emulsion stock solution into a polydimethylsiloxane-based spinning emulsion; And (3) an adhesion step of applying the emulsion mixture obtained in the incorporating step to the surface of the elastic yarn by applying an amount of 2 to 7% by weight based on the weight of the yarn.

According to the above-described manufacturing method, in the first manufacturing of the elastic yarn according to the manufacturing method of the conventional elastic yarn, during the preparation of the elastic yarn, the strontium-alumina solid solution for the expression of phosphorescence is first put into the spinning oil applied to the elastic yarn first After the incorporation, the elastic yarn is applied to the spinning oil in which the strontium-alumina solid solution for phosphorescence is incorporated so that the strontium-alumina solid solution in the spinning oil adheres to the surface of the elastic yarn.

All of the methods according to the present invention as described above are methods for permanently or temporarily applying strontium-alumina solid solution for phosphorescence expression to elastic yarn, and the phosphorescence is expressed not only under ultraviolet light but also under natural light by the applied strontium-alumina solid solution. The elastic yarn is included so that it can be easily checked whether the elastic yarn is properly included without being dropped or the thread of the elastic yarn is not dropped during manufacture of the fabric.

Hereinafter, preferred embodiments and comparative examples of the present invention will be described.

The following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

Examples 1-4

518 g of diphenylmethane-4,4′-diisocyanate and 2328 g of polytetramethylene ether glycol (molecular weight 1,800) were reacted with stirring at 85 ° C. for 90 minutes under a nitrogen gas stream to obtain a polyurethane precursor containing an isocyanate at both ends. Prepared. After the polyurethane precursor was cooled to room temperature, 4,643 g of dimethylacetamide was added thereto and dissolved to obtain a polyurethane precursor solution. Subsequently, a solution in which 54 g of propylenediamine and 9.1 g of diethylamine were dissolved in 1889 g of dimethylacetamide was added to the polyurethane precursor solution at 10 ° C. or lower to prepare a segmented polyurethane polymer solution.

Conventional UV stabilizers, antioxidants, anti-yellowing agents, dyeing enhancers, magnesium-based anti-sticking agents, titanium-based matting agents, etc. are added to the polymerized product, and the strontium-alumina solid solution, an inorganic additive, is rapidly frozen with liquid nitrogen for phosphorescence expression. After the grinding process, the powder was ground with a separate sand grinder to have an average particle diameter of about 2 microns, and then 0.1 wt% (Example 1) and 3 wt% (Example 2) were added to the polymer solids, respectively, and mixed together. After degassing and degassing, the spinning temperature was adjusted to 250 ° C. in the dry spinning process to draw at an appropriate draw ratio, and 10, 20, 40, and 140 denier polyurethane elastic yarns were wound, respectively. In addition, 0.1 wt% of each of the strontium-alumina solid solutions was added to the polymer polymerized in the same manner as in the above-mentioned method, in the form of an additive, in which the strontium-alumina solid solution, which is the inorganic additive, was spun in the same manner as in the above method. Example 3) Winding 10, 20, 40, and 140 denier polyurethane elastic yarns each having 3 wt% (Example 4) injected spinning oil prepared by applying an emulsion of 5 wt% to the weight of the fiber to the elastic yarn. It was. The spinning emulsion used herein is a polydimethylsiloxane-based emulsion generally used for winding elastic yarns, and there is no restriction according to the type of emulsion in the application effect of the present patent method.

As described above, the elastic yarn products manufactured by the additive type and the dosing method (in the polymer or in the emulsion) were coated with polyester 75 Denia DTY using a conventional covering facility.

Comparative Examples 1 and 2

When preparing the polyurethane elastic yarn of the embodiment, the inorganic additive strontium-alumina solid solution is rapidly frozen with liquid nitrogen for phosphorescence expression, and then pulverized with a separate sand grinder to have an average particle diameter of about 2 microns, respectively, 0.05 to the solids weight. After mixing by adding weight% (Comparative Example 1), 4% by weight (Comparative Example 2), the polyurethane elastic yarn was wound up, and then, the coated elastic yarn was prepared in the same manner as in the above examples.

Comparative Examples 3 and 4

In preparing the polyurethane elastic yarns of the above embodiments, the phosphorescent-expressing inorganic additive is added to the same polymerized polymer in the form of an additive in the form of an inorganic additive, strontium-alumina solid solution, and the polymer is spun in the same manner as in the above method. 10, in which an emulsion of 5% by weight relative to the weight of the fiber was applied to the elastic yarn by applying a spinning emulsion prepared by adding 0.05% by weight (Comparative Example 3) and 4% by weight (Comparative Example 4) of the strontium-alumina solid solution, respectively. Polyurethane elastic yarns of 20, 40 and 140 denier were respectively wound up, and then coated elastic yarns were prepared in the same manner as in the above examples.

Comparative Example 5

When preparing the polyurethane elastic yarns of the above examples, 10, 20, 40 and 140 denier products were prepared without applying the phosphonide-alumina solid solution, which is the phosphorescent expression inorganic additive, as in the conventional method. A coated elastic yarn was prepared in the same manner as in the case of these.

<Comparison of Phosphorescence Expression in Examples and Comparative Examples>

Phosphorescence expression of the coated elastic yarn obtained in the above Examples and Comparative Examples was measured and shown in Table 1 below.

division Denia (d) Brightness under daylight (40 Lux) White peach Remarks Elastic yarn itself (Lux, Color) 1 strand of elastic yarn (visual identification) 1 strand of coated elastic yarn (visual identification) Example 1 10 3-5, yellow fluorescent possible possible ◎ 20 3-5, yellow fluorescent possible possible ◎ 40 3-5, yellow fluorescent possible possible ◎ 140 3-5, yellow fluorescent possible possible ◎ Example 2 10 10-13, yellow fluorescent possible possible ◎ 20 10-13, yellow fluorescent possible possible ◎ 40 10-13, yellow fluorescent possible possible ◎ 140 10-13, yellow fluorescent possible possible ◎ Comparative Example 1 140 0-1, low light impossible impossible △ Comparative Example 2 40 17-19, yellow fluorescent possible possible ◎ envoy Example 3 10 6-8, yellow fluorescent possible possible ◎ 20 6-8, yellow fluorescent possible possible ◎ 40 6-8, yellow fluorescent possible possible ◎ 140 6-8, yellow fluorescent possible possible ◎ Example 4 10 20-23, yellow fluorescent possible possible ◎ 20 20-23, yellow fluorescent possible possible ◎ 40 20-23, yellow fluorescent possible possible ◎ 140 20-23, yellow fluorescent possible possible ◎ Comparative Example 3 140 1-2, luminous impossible impossible △ Comparative Example 4 40 26-27, yellow fluorescent possible possible ◎ Scum Comparative Example 5 10 0, no light impossible impossible △ 20 0, no light impossible impossible △ 40 0, no light impossible impossible △ 140 0, no light impossible impossible △  Example 1; 0.1 wt% of strontium-alumina solid solution in the polymer Example 2; 3% by weight of strontium-alumina solid solution in the polymer Comparative Example 1; 0.05% by weight of strontium-alumina solid solution in the polymer Comparative Example 2; 4 wt% of strontium-alumina solid solution in the polymer Example 3; 0.1 weight% of strontium-alumina solid solution in the oil agent Example 4; 3 weight% of strontium-alumina solid solution in the emulsion, Comparative Example 3; 0.05% by weight of strontium-alumina solid solution in the emulsion, Comparative Example 4; 4% by weight of strontium-alumina solid solution in the emulsion, Comparative Example 5; Conventional method, no phosphorescent trimmers; Thread of thread during spinning, scum; Scum occurrence

According to Table 1, the following conclusions can be inferred.

That is, the conventional technique is a degree of light emission in dark purple under ultraviolet light by some inorganic materials added as an additive in the process of manufacturing the elastic yarn, this method avoids the naked eye when the denia of the elastic yarn is small or the irradiation amount of ultraviolet light is insufficient. There was a problem that it was difficult to determine the existence of elastic yarn in the radiation, and the organic additives that fluoresce when exposed to ultraviolet rays were introduced into the polymer or the spinning oil to give more distinct fluorescent light (fluorescent light) under the ultraviolet light source. Although there is a disadvantage in that a light source emitting ultraviolet rays is necessary, the present invention provides a method for manufacturing elastic yarns emitting light by natural light and ultraviolet rays, thereby injecting a phosphorescent material into a polymer or a spinning oil, and thus elastic yarns that are emitted even by natural light or ultraviolet light. When manufacturing the winding body All have the advantage of being able to identify the elastic yarn conveniently. The present invention applies a technique related to obtaining a phosphorescent elastic yarn winding by adding a phosphonated inorganic additive, strontium-alumina solid solution to a polymer or a spinning oil, and minimizes defects and operates in a downstream process than conventional methods. The economic benefits of the improvement can be given.

Therefore, according to the present invention, the effect of expressing phosphorescence is superior to that of the elastic yarn manufactured by the conventional method, and it is possible to clearly know whether or not the elastic yarn is thin like 10 denier even in the coated state, thereby visually not only under ultraviolet light but also under natural light. By making it easy to identify whether the yarn is trimmed or absent at an early stage, it is possible to prevent the decrease in utilization rate, waste of coated yarn, and loss of corporate image.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (6)

Strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence expression is added to the spinning polymer in an amount of 0.1 to 3% by weight based on the total weight of the yarn, and made by spinning or attaching to the surface of the elastic yarn formed by spinning Phosphorescent elastic yarn characterized in that. The method of claim 1, The phosphorescent elastic yarn, characterized in that the strontium-alumina solid solution is added to the spinning oil of the polydimethylsiloxane system, and then attached to the surface of the elastic yarn. The method of claim 1, After the strontium-alumina solid solution is added to the polydimethylsiloxane-based spinning emulsion in an amount of 0.1 to 3% by weight based on the weight of the emulsion stock solution, the mixture of the strontium-alumina solid solution and the emulsion is 2 to 7% by weight based on the weight of the elastic yarn. The phosphorescent elastic yarns, characterized in that made on the surface of the. The method according to any one of claims 1 to 3, The phosphorescent elastic yarn is characterized in that the strontium-alumina solid solution is applied by grinding to a particle size of 0.1 to less than 5 microns. In the manufacturing process of ordinary elastic yarn, (1) a kneading step of kneading by adding strontium-alumina solid solution (SrAl ₂ O ₄ ) to the spinning polymer in an amount of 0.1 to 3% by weight based on the total weight of the yarn for phosphorescence expression; And (2) an elastic yarn forming step of spinning the kneaded spinning polymer through a conventional spinneret according to a conventional spinning method to form an elastic yarn; Method for producing a phosphorescent elastic yarn, characterized in that comprises a. (1) an elastic yarn forming step of forming an elastic yarn according to a conventional spinning process; (2) mixing strontium-alumina solid solution (SrAl ₂ O ₄ ) for phosphorescence expression in an amount of 0.1 to 3 wt% based on the weight of the emulsion stock solution into a polydimethylsiloxane-based spinning emulsion; And (3) an adhesion step of applying the emulsion mixture obtained in the incorporation step to the surface of the elastic yarn in an amount of 2 to 7% by weight; Method for producing a phosphorescent elastic yarn, characterized in that comprises a.