JP2008303527A - Phosphor support - Google Patents

Phosphor support Download PDF

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JP2008303527A
JP2008303527A JP2008203701A JP2008203701A JP2008303527A JP 2008303527 A JP2008303527 A JP 2008303527A JP 2008203701 A JP2008203701 A JP 2008203701A JP 2008203701 A JP2008203701 A JP 2008203701A JP 2008303527 A JP2008303527 A JP 2008303527A
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fibers
phosphor
fluorescent
nonwoven fabric
substrate
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Akihiro Kato
陽弘 加藤
Akio Mukai
昭雄 向井
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Okaya Electric Industry Co Ltd
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Okaya Electric Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To achieve a phosphor support that can increase the amount of phosphor to be supported on the substrate. <P>SOLUTION: The substrate 14 is formed with a nonwoven fabric formed by entangling a plurality of fibers 12 and the surfaces of the fibers 12 constructing the nonwoven fabric are coated with the phosphor 16 to obtain the phosphor-bearing support 10. The fiber 12 is made of short-cut fibers of resin fibers such as polyamide, polyester, acrylic or polypropylene fibers, chemical fibers such as rayon cellulosic fibers, glass fibers and metallic fibers. The phosphor support 10 is formed by allowing a large number of fibers 12 to entangle each other in the three dimension to give nonwoven fabric having an extremely large surface area per the unit volume of the fibers 12. Then, the surfaces of the fibers 12 are coated with phosphor 16, and the amount of phosphor 16 supported on the substrate 14 can be dramatically increased. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、基体に蛍光体、蛍光ガラス等の蛍光物質を担持させて成る蛍光物質担持体に係り、特に、基体に担持させる蛍光物質の量を増大させることができる蛍光物質担持体に関する。   The present invention relates to a fluorescent material carrier in which a fluorescent material such as a fluorescent material or fluorescent glass is supported on a substrate, and more particularly to a fluorescent material carrier capable of increasing the amount of the fluorescent material supported on the substrate.

蛍光体や蛍光ガラス等の蛍光物質は、紫外線等の光の照射を受けると、この光を所定波長の可視光等の光に波長変換して放射する性質を備えていることから、例えば、図８に示すように、基体70の表面に蛍光体72を層状に被着した蛍光物質担持体74を形成し、この蛍光物質担持体74を、例えば、夜間の道路標識等、各種表示のための用途等に使用することが行われている。   Fluorescent materials such as phosphors and fluorescent glasses have the property of emitting light by converting the wavelength of the light into visible light having a predetermined wavelength when irradiated with light such as ultraviolet rays. As shown in FIG. 8, a fluorescent material carrier 74 is formed on a surface of a base body 70 with a phosphor 72 deposited in layers, and this fluorescent material carrier 74 is used for various displays such as a night road sign. It is used for applications.

ところで、上記蛍光体74から放射される光の輝度は、蛍光体74の量に略比例することから、蛍光物質担持体74の輝度を向上させるためには、基体70に担持させる蛍光体72の量をできるだけ多くするのが望ましい。
しかしながら、上記従来の蛍光物質担持体74にあっては、蛍光体72が基体70の表面に層状に配置されていることから、基体70表面に担持できる蛍光体72の量には限界があった。 By the way, since the luminance of the light emitted from the phosphor 74 is substantially proportional to the amount of the phosphor 74, in order to improve the luminance of the phosphor carrier 74, the phosphor 72 supported on the substrate 70 It is desirable to increase the amount as much as possible.
However, in the above-described conventional fluorescent material carrier 74, since the phosphors 72 are arranged in layers on the surface of the substrate 70, there is a limit to the amount of the phosphor 72 that can be supported on the surface of the substrate 70. .

本発明は、上記従来の問題点に鑑みてなされたものであり、その目的とするところは、基体に担持させる蛍光物質の量を増大させることができる蛍光物質担持体の実現にある。   The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to realize a fluorescent material carrier capable of increasing the amount of the fluorescent material carried on the substrate.

上記の目的を達成するため、本発明に係る蛍光物質担持体にあっては、多数の繊維が絡み合って形成された不織布で基体を形成すると共に、上記不織布を構成する繊維に、蛍光体、蛍光ガラス等の蛍光物質を担持したことを特徴とする。   In order to achieve the above object, in the phosphor support according to the present invention, a substrate is formed of a nonwoven fabric formed by intertwining a large number of fibers, and the phosphor, fluorescent substance is formed on the fibers constituting the nonwoven fabric. It is characterized by carrying a fluorescent material such as glass.

本発明の蛍光物質担持体にあっては、多数の繊維が絡み合って形成され、単位体積当たりの繊維の表面積が極めて大きい不織布を構成する繊維に、蛍光体、蛍光ガラス等の蛍光物質を担持せしめたことから、基体に担持する蛍光物質の量を飛躍的に増大させることができる。   In the fluorescent material carrier of the present invention, a fluorescent material such as a fluorescent material or fluorescent glass is supported on a fiber that forms a nonwoven fabric in which a large number of fibers are intertwined and the surface area of the fiber per unit volume is extremely large. As a result, the amount of the fluorescent material supported on the substrate can be dramatically increased.

以下、図面に基づき、本発明に係る蛍光物質担持体の実施形態を説明する。
図１及び図２は、本発明に係る蛍光物質担持体10を示すものであり、該蛍光物質担持体10は、多数の繊維12が絡み合ってシート状に形成された不織布より成る基体14と、図３及び図４に示すように、上記不織布を構成する繊維12の表面に被着・担持された蛍光物質としての蛍光体16とから成る。
尚、蛍光体16は、図４に示したように、繊維12の表面に緻密な層状態で被着・担持される場合の他、繊維12表面の蛍光体16の粒子間に微小な隙間が存在する状態で粗く被着・担持される場合もある（図示省略）。 Hereinafter, embodiments of the fluorescent material carrier according to the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 show a fluorescent material carrier 10 according to the present invention. The fluorescent material carrier 10 is composed of a base 14 made of a nonwoven fabric in which a large number of fibers 12 are entangled with each other, and As shown in FIG. 3 and FIG. 4, it consists of a fluorescent material 16 as a fluorescent material deposited and supported on the surface of the fiber 12 constituting the nonwoven fabric.
In addition, as shown in FIG. 4, the phosphor 16 is attached and supported on the surface of the fiber 12 in a dense layer state, and there is a minute gap between the particles of the phosphor 16 on the surface of the fiber 12. In some cases, it may be roughly deposited and supported in the existing state (not shown).

上記繊維12は、ナイロン、ポリエステル、アクリル、ポリプロピレン等の樹脂繊維、レーヨン等のセルロース系の化学繊維、ガラス繊維、金属繊維等の短繊維から成り、その直径は５〜２０μｍ、長さは０．５〜２０mm程度である。
尚、長さが５０〜１００mm程度の長繊維から成る繊維12を用いることも勿論可能である。 The fibers 12 are made of resin fibers such as nylon, polyester, acrylic and polypropylene, cellulosic chemical fibers such as rayon, short fibers such as glass fibers and metal fibers, and have a diameter of 5 to 20 μm and a length of 0.00. It is about 5 to 20 mm.
Of course, it is also possible to use fibers 12 made of long fibers having a length of about 50 to 100 mm.

多数の上記繊維12が絡み合ってシート状に形成された不織布は、繊維12間に多数の空隙18（図３参照）が形成されており、また、多数の繊維12が立体的に絡み合っているため、単位体積当たりの繊維12の表面積が極めて大きいものである。
尚、上記繊維12の繊維密度や、不織布の厚さ、目付等を適宜調整することにより、不織布を構成する繊維12の総表面積を任意に増減可能である。 The nonwoven fabric formed in the form of a sheet in which a large number of the fibers 12 are intertwined has a large number of voids 18 (see FIG. 3) between the fibers 12, and the numerous fibers 12 are intertwined in three dimensions. The surface area of the fiber 12 per unit volume is extremely large.
Note that the total surface area of the fibers 12 constituting the nonwoven fabric can be arbitrarily increased or decreased by appropriately adjusting the fiber density of the fibers 12, the thickness of the nonwoven fabric, the basis weight, and the like.

上記蛍光体16は、紫外線等の光の照射を受けると、この光を所定波長の可視光等の光に波長変換するものであり、例えば以下の組成のものを用いることができる。
紫外線等の光を赤色可視光に変換する赤色発光用の蛍光体16として、Ｍ２Ｏ２Ｓ：Ｅｕ（Ｍは、Ｌａ、Ｇｄ、Ｙの何れか１種）、0.5ＭｇＦ２・3.5ＭｇＯ・ＧｅＯ２：Ｍｎ、2ＭｇＯ・2ＬｉＯ２・Ｓｂ２Ｏ３：Ｍｎ、Ｙ（Ｐ，Ｖ）Ｏ4：Ｅｕ、ＹＶＯ4：Ｅｕ、（ＳｒＭｇ）3（ＰＯ4）：Ｓｎ、Ｙ２Ｏ３：Ｅｕ、ＣａＳｉＯ３：Ｐｂ，Ｍｎ等がある。
また、紫外線等の光を緑色可視光に変換する緑色発光用の蛍光体16として、ＢａＭｇ２Ａｌ１６Ｏ２７：Ｅｕ，Ｍｎ、Ｚｎ２ＳｉＯ4：Ｍｎ、（Ｃｅ，Ｔｂ，Ｍｎ）ＭｇＡｌ１１Ｏ１９、ＬａＰＯ4：Ｃｅ，Ｔｂ、（Ｃｅ，Ｔｂ）ＭｇＡｌ１１Ｏ１９、Ｙ２ＳｉＯ５：Ｃｅ，Ｔｂ、ＺｎＳ：Ｃｕ，Ａｌ、ＺｎＳ：Ｃｕ，Ａｕ，Ａｌ、（Ｚｎ，Ｃｄ）Ｓ：Ｃｕ，Ａｌ、ＳｒＡｌ２Ｏ４：Ｅｕ、ＳｒＡｌ２Ｏ４：Ｅｕ，Ｄｙ、Ｓｒ４Ａｌ１４Ｏ２５：Ｅｕ，Ｄｙ、Ｙ３Ａｌ５Ｏ１２：Ｔｂ、Ｙ３（Ａｌ，Ｇａ）５Ｏ１２：Ｔｂ、Ｙ３Ａｌ５Ｏ１２：Ｃｅ、Ｙ３（Ａｌ，Ｇａ）５Ｏ１２：Ｃｅ等がある。
更に、紫外線等の光を青色可視光に変換する青色発光用の蛍光体16として、(ＳｒＣａＢａ)５(ＰＯ４)３Ｃｌ：Ｅｕ、ＢａＭｇ２Ａｌ１６Ｏ２７：Ｅｕ、（ＳｒＭｇ）２Ｐ２Ｏ7：Ｅｕ、Ｓｒ２Ｐ２Ｏ7：Ｅｕ、Ｓｒ２Ｐ２Ｏ７：Ｓｎ、Ｓｒ５（ＰＯ4）３Ｃｌ：Ｅｕ、ＢａＭｇ２Ａｌ１６Ｏ２７：Ｅｕ、ＣａＷＯ4、ＣａＷＯ4：Ｐｂ青色蛍光体、ＺｎＳ：Ａｇ，Ｃｌ、ＺｎＳ：Ａｇ，Ａｌ、(Ｓｒ，Ｃａ，Ｍｇ)１０(ＰＯ４)６Ｃｌ２：Ｅｕ等がある。
上記赤色発光用の蛍光体16、緑色発光用の蛍光体16、青色発光用の蛍光体16を適宜選択・混合して用いることで、種々の色の発色が可能である。
尚、蛍光体16は、有機、無機の蛍光染料や、有機、無機の蛍光顔料を含むものである。 When the phosphor 16 is irradiated with light such as ultraviolet rays, it converts the wavelength of the light into light such as visible light having a predetermined wavelength. For example, a phosphor having the following composition can be used.
As a phosphor 16 for red light emission that converts light such as ultraviolet rays into red visible light, M 2 O 2 S: Eu (M is any one of La, Gd, and Y), 0.5MgF 2 .3.5MgO. GeO 2: Mn, 2MgO · 2LiO 2 · Sb 2 O 3: Mn, Y (P, V) O 4: Eu, YVO 4: Eu, (SrMg) 3 (PO 4): Sn, Y 2 O 3: Eu , CaSiO 3 : Pb, Mn and the like.
Further, as a phosphor 16 for green light emission that converts light such as ultraviolet light into green visible light, BaMg 2 Al 16 O 27 : Eu, Mn, Zn 2 SiO 4 : Mn, (Ce, Tb, Mn) MgAl 11 O 19 , LaPO 4 : Ce, Tb, (Ce, Tb) MgAl 11 O 19 , Y 2 SiO 5 : Ce, Tb, ZnS: Cu, Al, ZnS: Cu, Au, Al, (Zn, Cd) S: Cu , Al, SrAl 2 O 4 : Eu, SrAl 2 O 4 : Eu, Dy, Sr 4 Al 14 O 25 : Eu, Dy, Y 3 Al 5 O 12 : Tb, Y 3 (Al, Ga) 5 O 12 : There are Tb, Y 3 Al 5 O 12 : Ce, Y 3 (Al, Ga) 5 O 12 : Ce, and the like.
Further, as a phosphor 16 for blue light emission that converts light such as ultraviolet light into blue visible light, (SrCaBa) 5 (PO 4 ) 3 Cl: Eu, BaMg 2 Al 16 O 27 : Eu, (SrMg) 2 P 2 O 7 : Eu, Sr 2 P 2 O 7 : Eu, Sr 2 P 2 O 7 : Sn, Sr 5 (PO 4 ) 3 Cl: Eu, BaMg 2 Al 16 O 27 : Eu, CaWO 4 , CaWO 4 : Pb There are blue phosphors, ZnS: Ag, Cl, ZnS: Ag, Al, (Sr, Ca, Mg) 10 (PO 4 ) 6 Cl 2 : Eu, and the like.
Various colors can be generated by appropriately selecting and mixing the phosphor 16 for red light emission, the phosphor 16 for green light emission, and the phosphor 16 for blue light emission.
The phosphor 16 includes organic and inorganic fluorescent dyes and organic and inorganic fluorescent pigments.

以下において、上記蛍光物質担持体10の製造方法について説明する。
先ず、ポリプロピレン等の高融点材料より成る繊維12を、ポリエチレン等の低融点材料より成る繊維20で被覆した所定長さの複合繊維22（図５参照）を多数準備し、カード法やエアレイ法等を用いて、これら多数の複合繊維22より成るシート状の集積体（ウェブ）を形成する。
次に、複合繊維22を構成する低融点材料より成る繊維20の融点より高く、且つ、高融点材料より成る繊維12の融点より低い温度で、複合繊維22より成る上記シート状の集積体を加熱して低融点材料より成る繊維20のみを溶融させると共に、粒子状の蛍光体16を上記集積体に吹き付ける。
この結果、高融点材料より成る繊維12の交差部分が、溶融した低融点材料より成る繊維20を介して接着することにより、不織布より成る上記基体14が形成されると共に、粒子状の蛍光体16が、溶融した低融点材料より成る繊維20を介して、不織布を構成する繊維12の表面に接着・担持され、上記蛍光物質担持体10が完成する。
上記製造方法にあっては、高融点材料より成る繊維12を低融点材料より成る繊維20で被覆した複合繊維22を用い、低融点材料より成る繊維20のみを溶融させて接着剤として機能させることにより、不織布の形成と蛍光体16の担持を略同時に行うことができるので、極めて製造容易である。 Hereinafter, a method for producing the fluorescent material carrier 10 will be described.
First, a large number of composite fibers 22 (see FIG. 5) having a predetermined length obtained by coating fibers 12 made of a high melting point material such as polypropylene with fibers 20 made of a low melting point material such as polyethylene are prepared. Is used to form a sheet-like aggregate (web) composed of a large number of these composite fibers 22.
Next, the above-mentioned sheet-like aggregate comprising the composite fibers 22 is heated at a temperature higher than the melting point of the fibers 20 made of the low melting point material constituting the composite fibers 22 and lower than the melting point of the fibers 12 made of the high melting point material. As a result, only the fibers 20 made of the low melting point material are melted, and the particulate phosphor 16 is sprayed onto the aggregate.
As a result, the intersecting portion of the fibers 12 made of the high melting point material is bonded via the melted fibers 20 made of the low melting point material, whereby the base 14 made of the nonwoven fabric is formed and the particulate phosphor 16 is formed. However, it is bonded and supported on the surface of the fiber 12 constituting the nonwoven fabric through the fiber 20 made of the melted low melting point material, and the fluorescent material carrier 10 is completed.
In the above manufacturing method, the composite fiber 22 in which the fiber 12 made of the high melting point material is coated with the fiber 20 made of the low melting point material is used, and only the fiber 20 made of the low melting point material is melted to function as an adhesive. As a result, the formation of the nonwoven fabric and the loading of the phosphor 16 can be performed almost simultaneously, which makes it extremely easy to manufacture.

尚、上記製造方法以外にも、例えば、蛍光体16の分散液中に不織布より成る基体14を浸漬した後乾燥させることにより、不織布を構成する繊維12の表面に蛍光体16を被着・担持させることもできる。   In addition to the above manufacturing method, for example, the substrate 14 made of a nonwoven fabric is immersed in a dispersion liquid of the phosphor 16 and then dried, so that the phosphor 16 is attached to and supported on the surface of the fibers 12 constituting the nonwoven fabric. It can also be made.

上記蛍光物質担持体10の基体14である不織布の繊維12表面の蛍光体16に、紫外線等の光が照射されると、この光が所定波長の可視光等の光に波長変換されて放射されるのである。
而して、上記蛍光物質担持体10にあっては、多数の繊維12が立体的に絡み合って形成され、単位体積当たりの繊維12の表面積が極めて大きい不織布を構成する繊維12の表面に、蛍光体16を担持せしめたことから、従来の蛍光物質担持体74の如く蛍光体72を基体70表面に層状に被着した場合に比べ、基体14に担持する蛍光体16の量を飛躍的に増大させることができる。 When the phosphor 16 on the surface of the nonwoven fabric fiber 12 that is the base 14 of the phosphor support 10 is irradiated with light such as ultraviolet rays, the light is converted into light such as visible light having a predetermined wavelength and emitted. It is.
Thus, in the fluorescent material carrier 10, a large number of fibers 12 are entangled three-dimensionally, and the surface of the fibers 12 constituting the nonwoven fabric in which the surface area of the fibers 12 per unit volume is extremely large is fluorescent. Since the phosphor 16 is supported, the amount of the phosphor 16 supported on the substrate 14 is dramatically increased compared to the case where the phosphor 72 is deposited on the surface of the substrate 70 like the conventional phosphor material support 74. Can be made.

尚、基体14を不織布で構成した上記蛍光物質担持体10の強度を向上させるため、図６に示すように、表面に蛍光体16を担持させたシート状の織布24を、基体14の外面に接合しても良い。
この織布24は、樹脂繊維、ガラス繊維、金属繊維等の多数の繊維（図示せず）を縒る等して形成した繊維の集合体より成る紐26を、略格子状に織り込むと共に、該織布24を構成する紐26の表面に蛍光体16を担持させることにより形成されている（図７）。この織布24は、紐26間に多数の空隙28が形成されている。
図６においては、基体14の底面に上記織布24を接合した場合が示されているが、基体14の上面に上記織布24を接合したり、或いは、基体14の外面を上記織布24で被覆した状態で接合しても良い。 In order to improve the strength of the fluorescent material carrier 10 in which the substrate 14 is composed of a nonwoven fabric, as shown in FIG. 6, a sheet-like woven fabric 24 having a phosphor 16 supported on the surface is attached to the outer surface of the substrate 14. You may join to.
The woven fabric 24 weaves a string 26 made of a collection of fibers formed by winding a large number of fibers (not shown) such as resin fibers, glass fibers, and metal fibers, in a substantially lattice shape, It is formed by carrying the phosphor 16 on the surface of the string 26 constituting the woven fabric 24 (FIG. 7). In the woven fabric 24, a large number of voids 28 are formed between the strings 26.
FIG. 6 shows the case where the woven fabric 24 is joined to the bottom surface of the base body 14, but the woven fabric 24 is joined to the top surface of the base body 14, or the outer surface of the base body 14 is joined to the woven fabric 24. You may join in the state coat | covered with.

上記織布24と蛍光物質担持体10の基体14外面との接合は、例えば、接着剤（図示せず）を介して行うことができる。
また、上記した複合繊維22を用いて蛍光物質担持体10を製造する場合においては、溶融した低融点材料より成る繊維20を介して、高融点材料より成る繊維12の交差部分を接着することにより基体14を形成すると共に、粒子状の蛍光体16を不織布を構成する繊維12の表面に接着・担持させ、更に、溶融した低融点材料より成る繊維20を介して、上記織布24を蛍光物質担持体10の基体14外面に接着すれば良い。 The woven fabric 24 and the outer surface of the substrate 14 of the fluorescent material carrier 10 can be joined, for example, via an adhesive (not shown).
Further, in the case of manufacturing the fluorescent material carrier 10 using the above-described composite fiber 22, the crossing portion of the fiber 12 made of the high melting point material is bonded through the fiber 20 made of the melted low melting point material. The substrate 14 is formed, and the particulate phosphor 16 is adhered to and supported on the surface of the fiber 12 constituting the nonwoven fabric. Further, the woven fabric 24 is made to be a fluorescent substance through the fiber 20 made of a molten low melting point material. What is necessary is just to adhere | attach on the base | substrate 14 outer surface of the support body 10. FIG.

上記においては、不織布を構成する繊維12の「表面」に蛍光体16を担持せしめた場合を例に挙げて説明したが、本発明はこれに限定されるものではなく、例えば、透明樹脂等より成る透光性の繊維12に粒子状の蛍光体16を練り混むことにより、不織布を構成する繊維12に蛍光体16を担持させても良い。
この場合、例えば、未硬化状態の透明樹脂中に、粒子状の蛍光体を所定量混合した後、透明樹脂を延伸、硬化させ、その後、所定の長さに切断することにより、蛍光体16が練り混まれた多数の繊維を形成し、斯かる蛍光体16が練り混まれた多数の繊維を用いて不織布を形成すれば良い。 In the above, the case where the phosphor 16 is supported on the “surface” of the fiber 12 constituting the nonwoven fabric has been described as an example, but the present invention is not limited to this, for example, from a transparent resin or the like The phosphor 16 may be supported on the fibers 12 constituting the nonwoven fabric by kneading and mixing the particulate phosphor 16 with the translucent fibers 12.
In this case, for example, after mixing a predetermined amount of a particulate phosphor in an uncured transparent resin, the transparent resin is stretched and cured, and then cut into a predetermined length to obtain the phosphor 16 A large number of kneaded fibers may be formed, and a nonwoven fabric may be formed using a large number of fibers mixed with such a phosphor 16.

蛍光物質としては、上記した蛍光体16だけでなく、蛍光ガラスや蛍光樹脂等、紫外線等の光の照射を受けた場合に、この光を所定波長の可視光等の光に波長変換する全ての物質を含むものである。
蛍光ガラスは、ガラス材料に蛍光材料を添加して形成される透明体であり、また、蛍光樹脂は、エポキシ樹脂等の樹脂材料に蛍光材料を添加して形成される透明体である。これら蛍光ガラスや蛍光樹脂を粒子状と成し、基体14である不織布を構成する繊維12の表面に被着・担持させることにより、上記蛍光物質担持体10を形成することができる。 As the fluorescent material, not only the above-described phosphor 16, but also any glass such as fluorescent glass or fluorescent resin, when irradiated with light such as ultraviolet rays, all the light that converts the wavelength of this light into light such as visible light having a predetermined wavelength is used. Contains substances.
The fluorescent glass is a transparent body formed by adding a fluorescent material to a glass material, and the fluorescent resin is a transparent body formed by adding a fluorescent material to a resin material such as an epoxy resin. The fluorescent material carrier 10 can be formed by forming the fluorescent glass or the fluorescent resin in the form of particles and adhering and supporting the fluorescent glass or fluorescent resin on the surface of the fiber 12 constituting the nonwoven fabric as the substrate 14.

また、蛍光ガラスや蛍光樹脂等より成る蛍光繊維（図示せず）を用いて基体14である不織布を形成することにより、本発明の蛍光物質担持体10と成すこともできる。
以下において、ゾルゲル法によって、蛍光ガラスより成る蛍光繊維の形成方法を説明する。蛍光ガラスは、上記の通り、ガラス材料に蛍光材料を添加して形成される透明体である。ガラス材料としては、例えば、酸化物ガラス、珪酸系ガラス、フツ燐酸塩系ガラス等を用いることができる。また蛍光材料としては、例えば、希土類元素の２価及び３価のＥｕ、Ｔｂ、Ｓｍ等、或いは、Ｍｎ、Ｚｎ等を単体或いは複数組み合わせて用いることができる。蛍光材料を構成するこれら元素の原子は、通常陽イオン状態となっており、紫外光等の光の照射を受けて励起され、イオン固有の色の可視光を発光するものである。 Further, the fluorescent material carrier 10 of the present invention can be formed by forming a nonwoven fabric as the substrate 14 using fluorescent fibers (not shown) made of fluorescent glass, fluorescent resin, or the like.
Below, the formation method of the fluorescent fiber which consists of fluorescent glass by the sol-gel method is demonstrated. As described above, the fluorescent glass is a transparent body formed by adding a fluorescent material to a glass material. As the glass material, for example, oxide glass, silicate glass, or fluorophosphate glass can be used. As the fluorescent material, for example, rare earth divalent and trivalent Eu, Tb, Sm, etc., or Mn, Zn, etc. can be used alone or in combination. The atoms of these elements constituting the fluorescent material are normally in a cation state and are excited by irradiation with light such as ultraviolet light to emit visible light of a color unique to the ion.

ゾルゲル法は、ＳｉＯ２、ＺｎＯ、Ｙ２Ｏ３等の金属アルコキシドを出発物質として、その加水分解、重合反応を利用してガラスを合成するものであり、溶液状態から出発するため、希土類イオン等の蛍光材料を均一に添加することができるものである。
先ず、ＳｉＯ２、ＺｎＯ、Ｙ２Ｏ３等の金属アルコキシド、金属アセチルアセトネート、金属カルボキシレート等の金属有機化合物と、該金属有機化合物の加水分解のための水と、メタノール、DMF（ヂメチルフォルムアミド）等の溶媒と、アンモニア等、上記金属有機化合物の加水分解・重合反応の調整剤と、希土類元素の２価及び３価のＥｕ、Ｔｂ、Ｓｍ等の蛍光材料（発光中心）とを調合し、均質で透明な溶液状態の蛍光ガラス材料を作製する。 The sol-gel method uses a metal alkoxide such as SiO 2 , ZnO, and Y 2 O 3 as a starting material to synthesize glass using its hydrolysis and polymerization reaction. The fluorescent material can be uniformly added.
First, metal alkoxides such as SiO 2 , ZnO and Y 2 O 3 , metal organic compounds such as metal acetylacetonate and metal carboxylate, water for hydrolysis of the metal organic compounds, methanol, DMF (dimethyl) A solvent such as formamide), a regulator of hydrolysis and polymerization reaction of the above metal organic compound such as ammonia, and a fluorescent material (emission center) of rare earth elements such as divalent and trivalent Eu, Tb and Sm. Prepare and produce a fluorescent glass material in a homogeneous and transparent solution state.

次に、上記溶液状態の蛍光ガラス材料を、例えば２００℃程度の比較的低温で加熱等することにより、溶媒を蒸発させると共に、上記金属有機化合物の加水分解・重合反応を一部進行させて、溶液状態の蛍光ガラス材料を粘性ゾル状と成す。
次に、粘性ゾル状の蛍光ガラス材料を延伸した後、８００℃〜１０００℃の温度で加熱・焼成して、蛍光ガラス材料の重合を完全に進行させることにより、ゲル状の細長い蛍光繊維を形成し、この蛍光繊維を、所定の長さに切断すれば、蛍光ガラスより成る多数の蛍光繊維を形成することができる。
斯かる蛍光ガラスより成る多数の蛍光繊維を用いて基体14である不織布を形成すれば、上記蛍光物質担持体10が完成する。 Next, by heating the fluorescent glass material in a solution state at a relatively low temperature of, for example, about 200 ° C., the solvent is evaporated and the hydrolysis / polymerization reaction of the metal organic compound is partially advanced, A fluorescent glass material in a solution state is made into a viscous sol.
Next, after stretching the viscous sol-like fluorescent glass material, it is heated and baked at a temperature of 800 ° C. to 1000 ° C. to completely progress the polymerization of the fluorescent glass material, thereby forming a gel-like elongated fluorescent fiber. If this fluorescent fiber is cut into a predetermined length, a large number of fluorescent fibers made of fluorescent glass can be formed.
If the nonwoven fabric which is the substrate 14 is formed using a large number of fluorescent fibers made of such fluorescent glass, the fluorescent material carrier 10 is completed.

本発明に係る蛍光物質担持体を模式的に示す斜視図である。It is a perspective view which shows typically the fluorescent substance support body which concerns on this invention. 本発明に係る蛍光物質担持体を模式的に示す部分拡大図である。It is the elements on larger scale which show typically the fluorescent substance carrier concerning the present invention. 本発明に係る蛍光物質担持体を構成する繊維を模式的に示す拡大図である。It is an enlarged view which shows typically the fiber which comprises the fluorescent substance support body which concerns on this invention. 本発明に係る蛍光物質担持体を構成する繊維を模式的に示す断面図である。It is sectional drawing which shows typically the fiber which comprises the fluorescent substance support body which concerns on this invention. 複合繊維を示す概略断面図である。It is a schematic sectional drawing which shows a composite fiber. 表面に蛍光体を担持させた織布を、蛍光物質担持体の基体の外面に接合した状態を模式的に示す正面図である。It is a front view which shows typically the state which joined the woven fabric which carry | supported the fluorescent substance on the surface to the outer surface of the base | substrate of a fluorescent substance support. 表面に蛍光体を担持させた織布を模式的に示す平面図である。It is a top view which shows typically the woven fabric which carry | supported the fluorescent substance on the surface. 従来の蛍光物質担持体を示す断面図である。It is sectional drawing which shows the conventional fluorescent substance support body.

符号の説明Explanation of symbols

10 蛍光物質担持体
12 繊維
14 基体
16 蛍光体
22 複合繊維
24 織布 10 Phosphor support
12 fibers
14 Substrate
16 phosphor
22 Composite fiber
24 Woven fabric

Claims (1)

多数の繊維が絡み合って形成された不織布で基体を形成すると共に、上記不織布を構成する繊維に、蛍光体、蛍光ガラス等の蛍光物質を担持したことを特徴とする蛍光物質担持体。   A fluorescent material carrier characterized in that a substrate is formed of a nonwoven fabric formed by intertwining a large number of fibers, and a fluorescent material such as a fluorescent material or fluorescent glass is supported on the fibers constituting the nonwoven fabric.
JP2008203701A 2008-08-07 2008-08-07 Phosphor support Pending JP2008303527A (en)

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