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A high performance photoluminescent material and a production method therefor

A technology for luminescent materials and manufacturing methods, applied in the directions of luminescent materials, chemical instruments and methods, etc., can solve the problems of incomplete function of light-storing luminescent pigments, inability to obtain luminous thickness, limited performance and use, etc.

Inactive Publication Date: 2004-06-16
DOPPEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for example, in the case of a luminescent material containing a light-storing luminescent pigment as described above, the saturated state of 200Lx irradiation with a D65 common light source reaches 3mcd / m, which is the lower limit value for human beings to recognize the outline of an object. 2 The luminance can maintain the luminescence for several hours at best, and it is limited to 1 hour in the above-mentioned proposal (JP-A-60-137862).
[0006] In addition, the initial luminance, that is, the luminance that needs to be considered in order to clearly recognize the evacuation shelter during a power outage in about 15 minutes, is also insufficient.
[0007] In addition, although the light-storing and luminous pigment is mixed, the part that can emit light is only the surface of the material or a depth of about 1 mm from the surface at the maximum, so there is a disadvantage that the light-storing and luminous pigment contained in the molded product does not fully function.
[0008] Therefore, there are basic problems related to luminous performance as mentioned above, such as the thickness of luminescence cannot be obtained, and it is difficult to prolong the luminescence time.
[0009] In fact, from the point of view of such problems, for example, as a guide for evacuation and evacuation in the case of a power failure in underground streets, the functions of phosphorescent luminescence that attract attention in practical applications are limited to paints or resin tapes or resins containing phosphorescent luminescent pigments. Thin film, but this is also not fully functional from the point of view of the above problems
[0010] In addition, light-storing and luminescent pigments are expensive pigments, and even if a small amount is added, the total cost will increase by 3 to 100 times. Not practical
[0011] From this point of view, the performance and application of light-storing and luminescent materials in the past are extremely limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] As the MMA resin slurry in which the MMA polymer and the MMA monomer are mixed, various slurries having different contents and viscosities of the MMA polymer are prepared, and the light-storing and luminescent pigment components etc. are mixed in the slurry to form the following formulation ( weight ratio.

[0076] MMA resin slurry 35.5

[0077] Resin curing agent 0.5

[0078] Strontium aluminate-based light-storing luminous pigment 50.0

[0079] (manufactured by Nemoto Chemical Co., Ltd., with an average particle size of 100 μm)

[0080] Aluminum hydroxide 14.0

[0081] (average particle size 10μm)

[0082] Mixing was performed under reduced ambient atmospheric conditions of 0.1 atmosphere. At this time, the air bubble content per unit volume of the mixed preparation is set to be 1% or less.

[0083] The prepared mixed preparation was cast into a plate-shaped body with a thickness of 5 mm, and allowed to solidify.

[0084] As mentioned above, the measured lumina...

Embodiment 2

[0088] In Example 1, a molded cured body was obtained in the same manner using MMA resin syrup with a viscosity of 6.0 Pa·s (20° C.) and strontium aluminate-based light-storing luminescent pigments with different average particle diameters.

[0089] It can reach 3mcd / m for various molded and cured bodies 2 time. The results are shown in Table 3.

[0090] Average particle size (μm)

[0091] It was confirmed that the light storage and luminescence performance was significantly improved by using the light storage and luminescence pigment component with a large particle size. However, when it is less than 10μm, it reaches 3mcd / m 2 time does not exceed 8 hours.

Embodiment 3

[0093] In Example 1, MMA resin slurry with a viscosity of 6.0 Pa·s (20° C.) was used, and the ambient atmosphere during mixing was changed, or the mixing device was changed for stirring and mixing.

[0094] 3mcd / m can be measured under various conditions 2 time, the results are shown in Table 4. The degree of reduced pressure (KPa) in Table 4 represents the degree of reduced pressure from normal pressure.

[0095] In addition, mixing apparatuses A, B, and C represent the following types.

[0096] A: The inner surface of the mixing container and the stirring blades are all made of stainless steel

[0097] B: In A, only the surface of the stirring blade is covered with silicone rubber

[0098] C: The inner surface of the mixing container in A, and the surface of the stirring blades are covered with silicone rubber

[0099] Decompression degree (KPa)

[0100] It was confirmed that the pressure reduction of 50kPa or more is effective, and the inner surface of the mix...

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PUM

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Abstract

A photoluminescent material is formed by curing a blend of a transparent base material and a photoluminescent pigment component, wherein the viscosity of the transparent base material is 1 Pa.s(20 DEG C.) or more and is added in an amount of 7 to 95 wt %. Luminescence performance is further improved by taking in consideration the relation between the internal structure of a molding and its luminescence performance, thereby achieving a luminescence of predetermined brightness for an extended period of time.

Description

technical field [0001] The invention of the present application relates to a highly light-storage luminescent material and a method for producing the same. More specifically, the invention of the present application relates to an extremely high light-storage light-emitting performance, A novel high-storage luminescent material capable of maintaining a high visibility effect for a long period of time and a manufacturing method thereof. technical background [0002] So far, people have known artificial stones in which natural stones are crushed, and the crushed stones are mixed with resin to solidify them. In addition, various studies have been made in order to make such an artificial stone have a pattern of the tone of natural stones such as marble and granite, and to obtain an artificial stone having good hardness and strength. [0003] As an attempt to improve the functions and performance of such artificial stones, a method of imparting a luminescent function by using a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/22C03C4/12C03C14/00C04B14/30C04B14/36C04B16/04C04B20/00C04B24/28C04B26/00C04B26/02C04B111/80C08L33/04C09K11/00C09K11/02C09K11/08
CPCC03C14/004C09K11/02C04B2201/10C04B26/02C03C2214/04C04B14/22C04B2111/807C03C4/12C04B24/28C03C2214/30C09K11/643C04B20/008C04B40/0089C04B2103/54C04B14/306C09K11/08C09K11/00
Inventor 斋藤研一郎酒井三枝子山梨有代
Owner DOPPEL
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