KR20020074044A - Luminous yarn having long afterglow and high brightness properties and preparation method thereof - Google Patents

Abstract

PURPOSE: A process of preparing a luminous yarn capable of emitting light of different colors as well as emitting light in high brightness for a long period time is provided. Whereby, the luminous yarn is useful as fiber material for traffic safety and prevention and extinction of fires when applied to yarn for wig, embroidery yarn and various fabrics. CONSTITUTION: Synthetic resin such as nylon, polymethylmethacrylate or polyester is mixed with a luminous body represented by the general formula: (M0.9996-0.998 Eu0.0006-0.002)Al2O4(M0.9996-0.998 Eu0.0006-0.002)O·n(Al1-b-a BbQa)2O3, melted and extruded to produce luminous chips, which are spun in a volume ratio of 3/1 to 1/4 and drawn to produce a yarn with 30 to 180 denier. In formula, M is one or more materials selected from the group consisting of Sr, Ca, Mg and Ba, Q is one or more materials selected from the group consisting of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Y, Ru, Mn and Bi, a is 0.0001 to 0.008, b is 0.001 to 0.5, and n is an integer from 1 to 9.

Description

Luminous yarn having long afterglow and high brightness properties and preparation method

The present invention relates to a high brightness long afterglow photoluminescent yarn and a manufacturing method thereof, and more particularly to a high brightness long afterglow photoluminescent yarn comprising a specific photoluminescent emitter 3% by weight.

Phosphorescent luminous material absorbs and accumulates the light when it receives a certain amount of natural light or artificial lighting during the day, and emits light at night or in the dark without light. When applied to a fashion system such as a wig, Not only does it bring an effect, but it can be expressed in various colors. However, the photoluminescent material used in the conventional photoluminescent yarn has thermal and chemical instability, and the luminance and afterglow time do not last long.

A brief description will be made of a general process of manufacturing the photoluminescent yarn as described above. First, the photoluminescent light emitting material and the chemical mixed in the first process and the first process of mixing the photoluminescent light emitter and the chemical fiber raw material at a constant ratio using a mixer. It consists of the 2nd process of melt spinning a fiber raw material using an extruder, and the 3rd process of weaving the fiber obtained by the 2nd process.

The photoluminescent body (KSM 5014) used in the above method may damage the human body, have low chemical stability, and may be discolored to black or brown color by ultraviolet rays, and thus have problems in use. Luminescent yarns collect light when the stimulus source (light) is irradiated from the outside, but emits light only by the action of the phosphor, which is included in the yarn, resulting in low luminance and short emission time. . In addition, although the luminance can be increased by a certain level by increasing the content of the light emitter, there is a limit to increase the brightness, and when the content of the light emitting body is too high, the quality and function as chemical fibers are degraded, which causes problems in use as a fiber.

The present invention has been made to solve the above problems, the object of the present invention is thermally and chemically stable, high brightness long afterglow photoluminescent yarn and long-lasting afterglow time and chemical fiber in the light emitting chip on the central axis Light is diffusely reflected by the spatial action of synthetic resins with the ability to improve brightness and increase the luminance of light, which can emit light at high brightness for a long time, and is chemically stable and does not discolor by ultraviolet rays. It is to provide a method of manufacturing a photoluminescent yarn that can emit light in a variety of colors.

1 is a manufacturing process chart according to an embodiment of the manufacturing method of the present invention,

Figure 2 is an enlarged cross-sectional view of the main portion of the high brightness long afterglow photoluminescent yarn according to the present invention.

** Description of the main symbols for the main parts of the drawings **

A: synthetic resin containing a photoluminescent illuminant

B: Synthetic Resin Not Containing Photoluminescent Emitter

C: High Brightness Long Afterglow Photoluminescent Yarn

The high brightness long afterglow photoluminescent yarn of the present invention is represented by the general formula (M _{0.9996 to 0.998} Eu _{0.0006 to 0.002} ) Al ₂ O ₄ (M _{0.9996 to 0.998} Eu _{0.0006 to 0.002} ) O · n (Al _1-ba B _b Q _a ) ₂ O ₃ wherein M is at least one material selected from the group consisting of strontium (Sr), calcium (Ca), magnesium (Mg) and barium (Ba), and Q is lanthanum (La), cerium (Ce), praseo Di (Pr), Neodymium (Nd), Samarium (Sm), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Tolium (Tm), Ytterbium (Yb), At least one material selected from the group consisting of yttrium (Y), lutetium (Lu), Mn (manganese) and bismuth (Bi), where a is 0.0001 to 0.008, b is 0.001 to 0.5, and n is an integer from 1 to 9. And 3 to 40% by weight of the photoluminescent light emitting material represented by).

In the photoluminescent yarn of the present invention, the photoluminescent emitter is particularly preferably M in strontium or calcium, and Q in dysprosium or neodymium.

In the high brightness long afterglow photoluminescent yarn of the present invention, the content of the photoluminescent luminous material is preferably 3 to 40% by weight, and less than 3% by weight, the desired effect of the present invention is inadequate, and only 40% by weight is used for the cost. It is not preferable because it increases but there is no increase of the effect.

The high brightness long afterglow photoluminescent yarn of the present invention is characterized by coating a synthetic resin not containing a photoluminescent emitter mainly on a synthetic resin including the photoluminescent emitter.

The light emitting color of the photoluminescent yarn is preferably green in the wavelength range of 515 to 525 nm, blue in the wavelength range of 442 nm to 454 nm, violet in the wavelength range of 485 to 495 nm, and yellow in the wavelength range of 560 to 680 nm.

According to another aspect of the present invention, there is provided a method of manufacturing a high brightness long afterglow photoluminescent yarn by melt dispersing and mixing the photoluminescent luminous material and the synthetic resin by a side feeding method of an extruder (3% by weight: 97% by weight to 40% by weight: 60% by weight). Extruding to prepare a light emitting chip; Obtaining a monofilament by spinning the synthetic resin used in manufacturing the light emitting chip to be coated and extruded on a rotating shaft by using a complex spinning machine around the light emitting chip; And plywood the monofilament.

In the above production method, the synthetic resin having a chemical fiber capability is preferably a synthetic fiber made of a material synthesized from petroleum such as polyester or nylon. In addition, the volume ratio between the central axis and the rotational axis containing the photoluminescent light emitting body is preferably 3/1 to 1/4, and the volume ratio of more than 3/1 and less than 1/4 is not preferable because the effect of the present invention is insufficient. Can not do it.

In addition, in the above production method, it is preferable to obtain monofilaments of 30 to 180 denier and to ply them into 1 to 48 filaments.

The photoluminescent yarn of the present invention may add conventional additives such as stabilizers, antistatic agents, and the like, and may use 0.1 to 5 parts by weight based on 100 parts of the photoluminescent yarn.

Hereinafter, the manufacturing method of the present invention will be described in more detail based on the accompanying drawings.

Resin having a chemical fiber capability such as nylon, polymethyl methacrylate (PMMA), or polyester (PET) is dried in a vacuum dryer for 1 to 15 hours, and a general formula (M _{0.9996 to 0.998} Eu _{0.0006 to 0.002} ) Al ₂ O ₄ (M _0.9996-0.998 Eu _0.0006-0.002 ) O-n (Al _1-ba B _b Q _a ) ₂ O ₃ , wherein M is one or more selected from the group consisting of strontium, calcium, magnesium and barium Material, Q is at least one material selected from the group consisting of lanthanum, cerium, prasedium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, tolium, ytterbium, yttrium, lutetium, Mn and bismuth Is a 0.0001 to 0.008, b is 0.001 to 0.5, n is an integer of 1 to 9) by the side feeding method of the extruder photoluminescent light emitter: resin = 3% by weight: 97% by weight 40 wt% to 60 wt%, and the light emitting chip is melt-dispersed and mixed in the resin. To manufacture. Thereafter, using a complex spinning machine, the light emitting chip was spun as a central axis, and the polyester used in manufacturing the light emitting chip was spun on a rotating shaft in a volume ratio of 3/1 to 1/4, and stretched (stretching temperature is 60 to 110 ° C). The yarn is adjusted to 30 to 180 denier to obtain monofilament. It is plywooded into 1 to 48 filaments according to the use to form a final yarn to manufacture the photoluminescent yarn of the present invention.

However, the kind, weight ratio, and denier of the above-mentioned materials are exemplary, and the present invention is not limited thereto.

Hereinafter, an Example demonstrates this invention. The following examples are intended to illustrate the invention, but the invention is not limited thereto.

Example 1

The polyester resin was dried in a vacuum dryer for 10 hours, and (Sr _0.998 Eu _0.001 ) Al ₂ O ₄ (Sr _0.998 Eu _0.001 ) O · 2 (Al _0.45 B _0.3 Q _0.008 ) ₂ O ₃ to 94% by weight of the polyester resin. 5% by weight of the phosphorescent phosphor, 0.5% by weight of UV inhibitor, and 0.5% by weight of antistatic agent are melt-dispersed by the side feeding method of the extruder (extrusion conditions: first cylinder 215 ° C, second cylinder 225 ° C, third cylinder 235 ° C) The light emitting chip was prepared by mixing. Thereafter, using a compound spinning machine, the light emitting chip was used as the central axis, and the polyester used in manufacturing the light emitting chip was spun at a volume ratio of 2/1 on the rotation axis, and the yarn was stretched (extending temperature 110 ° C.) to adjust the yarn to 70 denier. To monofilament. The final yarn was spun into 48 filaments to form a synthetic wig yarn, and the physical properties of the light emitting yarn of the present embodiment and the conventional light emitting yarn (comparative example) were measured and compared, and the results are shown in Table 1.

Table 1

division Luminescent yarn of this embodiment Conventional Luminescent Yarn (Comparative Example) Excitation wavelength (peak wavelength) 450 nm 450 nm Emission Color (Peak Wavelength) Green 525nm Green 530nm Initial luminance (peak wavelength) 4450 290 Afterglow luminance ¹⁾ (peak wavelength) 300mcd / ㎡ 25mcd / ㎡ Excitation time ²⁾ (peak wavelength) 36 minutes 3 minutes Emission color change UV 190 minutes irradiation none Browning 7.5 hours of ultraviolet rays none Black side

* Note 1): D ₆₅ commercial light source 200 lux, 5 minutes irradiation, 20 minutes brightness

2): Afterglow brightness is time until 0.3mcd / ㎡ is visible (visually visible)

Example 2

The polyester resin was dried in a vacuum dryer for 10 hours, and (Sr _0.998 Eu _0.001 ) Al ₂ O ₄ (Sr _0.998 Eu _0.001 ) O · 2 (Al _0.45 B _0.3 Q _0.008 ) ₂ O ₃ to 94% by weight of the polyester resin. 5% by weight of the phosphorescent phosphor, 0.5% by weight of UV inhibitor, and 0.5% by weight of antistatic agent are melt-dispersed by the side feeding method of the extruder (extrusion conditions: first cylinder 215 ° C, second cylinder 225 ° C, third cylinder 235 ° C) The light emitting chip was prepared by mixing. Thereafter, using a compound spinning machine, the light emitting chip was used as the central axis, and the polyester used in manufacturing the light emitting chip was spun at a volume ratio of 2/1 on the rotation axis, and the yarn was stretched (drawing temperature 110 ° C.) to adjust the yarn to 120 denier. To monofilament. The final yarn was spun into 24 filaments to form a yarn for embroidery, and the physical properties of the light emitting yarn of the present embodiment and the conventional light emitting yarn (comparative example) were measured and compared, and the results are shown in Table 2.

TABLE 2

division Luminescent yarn of this embodiment Conventional Luminescent Yarn (Comparative Example) Luminous color Green (525 nm) Green (530 nm) Afterglow brightness ¹⁾ 130mcd / ㎡ 7.5mcd / ㎡ Emission color change ²⁾ none Black side The tensile strength 650 280 Island 120 Denia 120 Denia Sewing Good Bad

* Note 1): D ₆₅ commercial light source 400lux, 20 minutes

2): 7.5 hours irradiation

As shown in Tables 1 and 2, the photoluminescent yarn of the present invention prepared as described above is chemically stable, stable to ultraviolet rays, does not discolor, and when irritating source (light) is irradiated from the outside, the irritating source (light) The light was collected by the photoluminescent light-emitting body contained in this yarn. In this case, the luminance emitted is diffusely reflected by the spatial action of the rotating shaft coated with the portion, and the luminance is increased to increase the luminance of the emitted light. In other words, the light generated while the high-luminance long-afterglow photoluminescent yarn emits light is subjected to refraction by the coated rotating shaft portion and is diffusely reflected (the light hits an object on a rough surface and scatters in all directions). It is to promote the promotion of. In addition, the photoluminescent yarn of the present invention emits light with high brightness for a long time compared with the photoluminescent yarn of the comparative example.

As described above, the high brightness long afterglow photoluminescent yarn according to the present invention can emit light with high brightness for a long time, as well as have the effect of emitting light in various colors with or without light, wig yarn, embroidery yarn and various fibers It is useful as a textile material in various fields including industrial materials, traffic and fire safety, and prevention of safety accidents.

Claims (7)

General formula (M _0.9996-0.998 Eu _0.0006-0.002 ) Al ₂ O ₄ (M _0.9996-0.998 Eu _0.0006-0.002 ) O-n (Al _1-ba B _b Q _a ) ₂ O ₃ (where M is strontium, calcium , At least one material selected from the group consisting of magnesium and barium, Q is lanthanum, cerium, prasedium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, tolium, ytterbium, yttrium, ruthetium, manganese and bismuth At least one material selected from the group consisting of 3 to 40% by weight of a photoluminescent emitter represented by a is 0.0001 to 0.008, b is 0.001 to 0.5, and n is an integer of 1 to 9). High brightness long afterglow photoluminescent yarn. The high brightness long afterglow photoluminescent yarn according to claim 1, wherein M is strontium or calcium, and Q is dysprosium or neodymium. The high brightness long afterglow photoluminescent yarn according to claim 1 or 2, wherein the synthetic resin including the photoluminescent light emitting body is coated with a rotation axis on the center axis of the synthetic resin. The luminescent color of the photoluminescent yarn is green in the wavelength range of 515 to 525 nm, blue in the wavelength range of 442 nm to 454 nm, purple in the wavelength range of 485 to 495 nm, and 560 to 680 nm. A high brightness long afterglow photoluminescent yarn, characterized in that yellow in the wavelength range. General formula (M _0.9996-0.998 Eu _0.0006-0.002 ) Al ₂ O ₄ (M _0.9996-0.998 Eu _0.0006-0.002 ) O-n (Al _1-ba B _b Q _a ) ₂ O ₃ (where M is strontium, calcium , At least one material selected from the group consisting of magnesium and barium, Q is lanthanum, cerium, prasedium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, tolium, ytterbium, yttrium, ruthetium, manganese and bismuth At least one substance selected from the group consisting of: a light-emitting phosphor and a synthetic resin represented by 0.0001 to 0.008, b is 0.001 to 0.5, and n is an integer of 1 to 9); Preparing a light emitting chip by melt-dispersing, mixing and extruding by side feeding method of the extruder in a ratio of 60% by weight; Obtaining a monofilament by spinning the synthetic resin used in manufacturing the light emitting chip to be coated and extruded on a rotating shaft by using a complex spinning machine around the light emitting chip; And A method of manufacturing a high brightness long afterglow photoluminescent yarn, characterized in that the monofilament is spun together. The method of manufacturing a high brightness long afterglow photoluminescent yarn according to claim 5, wherein the volume ratio of the central axis containing the photoluminescent emitter to the rotation axis of the synthetic resin is 3/1 to 1/4. A method for producing a high brightness long afterglow photoluminescent yarn according to claim 5, wherein monofilaments of 30 to 180 deniers are obtained and spun into 1 to 48 filaments.