Luminous polycarbonate resin composition and molded article thereof

A technology of polycarbonate resin and composition, applied in the direction of luminescent materials, chemical instruments and methods, etc.

Pending Publication Date: 2021-11-05
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Patent Document 1, there is actually no example in which two or more kinds of light storage materials are mixed and mixed.

Method used

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  • Luminous polycarbonate resin composition and molded article thereof
  • Luminous polycarbonate resin composition and molded article thereof
  • Luminous polycarbonate resin composition and molded article thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0177] The following examples are given to describe the present invention more specifically. The present invention is not limited to the following examples as long as the gist thereof is not exceeded.

[0178] The constituent components of the resin compositions used in the following examples, reference examples, and comparative examples are as follows.

[0179]

[0180] S-3000F: Aromatic polycarbonate resin "Iupilon S-3000F" manufactured by Mitsubishi Engineering-Plastics Co., Ltd. (viscosity average molecular weight: 21500)

[0181]

[0182] R-300M: Nemoto Special Chemicals Co., Ltd.'s red light-emitting light storage material "LumiNova R-300M" (europium magnesium titanium activated yttrium oxysulfide (Y 2 o 2 S:Eu, Mg, Ti), average particle size D 50 : 15μm)

[0183]

[0184] P-170: "KURAITOBRIGHTP-170" manufactured by Ryoko Co., Ltd. (dysprosium and europium activated strontium magnesium silicate (Sr 2 MgSi 2 o 7 :Eu, Dy), average particle size D 50 : 25μm) ...

Embodiment I-1～3

[0215] Polycarbonate resin and various additives are mixed with the ratio shown in Table 1, after mixing 20 minutes with the drum mixer, utilize the single-screw extruder (Tanabe Plastic Co., Ltd.) The manufactured "VS50-34V") was kneaded at a cylinder temperature of 300° C. and a screw rotation speed of 80 rpm, and the extruded strands were cut to produce pellets.

[0216] The obtained pellets were dried at 120°C for 5 hours, and then molded under conditions of a cylinder temperature of 300°C, a mold temperature of 120°C, and a molding cycle of 45 seconds using an injection molding machine ("SE50DUZ" manufactured by Sumitomo Heavy Industries, Ltd.). Injection molding was performed to produce a test piece (3-stage thin plate of 50 mm (width)×90 mm (length) and thicknesses of 1 mm, 2 mm, and 3 mm).

[0217] The evaluations (1) to (3) above were performed on the obtained pellets or test pieces, and the results are shown in Table 1.

[0218] [Table 1]

[0219]

Embodiment II-1～13

[0226] [Examples II-1 to 13, Reference Examples II-1 to 3, Comparative Example II-1]

[0227] Polycarbonate resin and various additives are mixed by the ratio shown in table 2, 3, after mixing 20 minutes with the drum mixer, utilize the single-screw extruder (Tanabe "VS50-34V" manufactured by Plastics Co., Ltd.) was kneaded at a cylinder temperature of 300° C. and a screw rotation speed of 80 rpm, and the extruded strands were cut to prepare pellets.

[0228] The obtained pellets were dried at 120°C for 5 hours, and then molded under conditions of a cylinder temperature of 300°C, a mold temperature of 120°C, and a molding cycle of 45 seconds using an injection molding machine ("SE50DUZ" manufactured by Sumitomo Heavy Industries, Ltd.). Injection molding was performed to produce a test piece (3-stage thin plate of 50 mm (width)×90 mm (length) and thicknesses of 1 mm, 2 mm, and 3 mm).

[0229] The evaluations (1) to (3) above were performed on the obtained pellets or test piece...

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Abstract

A luminous polycarbonate resin composition, which comprises, per 100 parts by mass of a polycarbonate resin (A), 0.8-20 parts by mass of a red light-emitting luminous material (B1) as a luminous material (B), characterized in that the L* value measured by the following method (X) is 65 or greater. Method (X): The luminous polycarbonate resin composition is injection-molded at a cylinder temperature of 300 DEG C, a mold temperature of 120 DEG C and a molding cycle of 45 seconds to give a test piece in the shape of a three-step plate (width: 50 mm, length: 90 mm, thickness: 1 mm, 2 mm and 3 mm). The part of the thickness of 3 mm of this test piece is subjected to the L* value measurement using a colorimeter in accordance with JIS Z8772 under the following conditions. Reflectometry: D65 light source, 10-degrees visual field. Aperture: 30 Phi. Sample presser: white.

Description

technical field [0001] The present invention relates to a light-storing polycarbonate resin composition and molded articles thereof, in particular, to a light-storing polycarbonate resin composition comprising at least a red light-emitting light-storage material as a light-storage material, having a high L* value and good brightness; and A molded article obtained by molding the light-storing polycarbonate resin composition. Background technique [0002] Various proposals have been made to use a polycarbonate resin composition mixed with a light-storage material as a molding material for light-storage light-emitting parts such as road signs and signboards, and research has been conducted on its improvement. It absorbs and accumulates light such as ultraviolet light or visible light contained in artificial light or artificial light, and continues to emit light for a certain period of time even after stopping light irradiation, that is, in a dark place. [0003] Among conventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/521C08L69/00C08K3/10C08K3/24C08K3/30
CPCC09K11/7789C09K11/02C09K11/7792C09K11/77922C08K3/30C08K5/521C08K2003/3009C08K3/34C08K3/22C08K2003/2227C08K2201/014C08L69/00C08L2201/08C08K5/524
Inventor 西林丰
Owner MITSUBISHI ENG PLASTICS CORP
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