light reflector

A light reflection, foam sheet technology, applied in optics, optical components, electronic equipment, etc., can solve the problems of inability to form bubbles, problems with thermoformability, problems in productivity, etc., and achieve small reflection differences and excellent thermoformability. , the effect of thin thickness

Inactive Publication Date: 2016-03-30
JSP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology cannot form fine bubbles without batch foaming, and there are still problems in productivity and thermoformability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] The following examples and comparative examples illustrate the present invention in more detail, but the present invention is not limited to the following examples. The following raw materials were used in Examples and Comparative Examples.

[0112] (1) The polystyrene resin used in Examples 1-18 and Comparative Examples 1-5 is polystyrene resin GX154 (MFR1.6g / 10 minutes, hereinafter referred to as GPPS1) produced by PSJapan Company and PSJapan Company. Polystyrene resin 679 (MFR18g / 10min, hereinafter referred to as GPPS2) is a mixed resin mixed at a weight ratio of 50:50.

Embodiment 19

[0113] The polystyrene resin used in Example 19 is 100 parts by weight of methacrylic acid copolymer polystyrene resin G9001 (MFR1.7g / 10 minutes, hereinafter referred to as PSM1) produced by PSJapan Company and styrene produced by JSR Company It is a mixed resin composed of 8.4 parts by weight of elastomer TR2000 (MFR13g / 10 minutes, hereinafter referred to as SER1) and 20 parts by weight of 679 (MFR18g / 10 minutes, hereinafter referred to as GPPS2) produced by PSJapan.

Embodiment 20

[0114] The polystyrene resin used in Example 20 is 100 parts by weight of poly-α-methylstyrene resin R431 (MFR0.2g / 10 minutes, hereinafter referred to as PSα) produced by Asahi Kasei Chemical Co., Ltd. and JSR Co., Ltd. A mixed resin composed of 8.4 parts by weight of styrene-based elastomer TR2000 (MFR13g / 10 minutes, hereinafter referred to as SER1) and 20 parts by weight of polystyrene resin 679 (MFR18g / 10 minutes, hereinafter referred to as GPPS2) produced by PSJapan.

[0115] The measurement of the melt flow rate (MFR) was carried out under the conditions of a test temperature of 200° C. and a load of 5 kg in accordance with the condition H of JIS K7210.

[0116] (2) Titanium oxide having a rutile structure and an average particle diameter of 230 nm is used. A masterbatch comprising 70 wt% titanium oxide was formed using GPPS2. The obtained masterbatch is used in an amount to achieve the desired compounding amount of titanium oxide.

[0117] (3) Perfluorobutanesulfonate ...

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Abstract

A light reflection sheet, which comprises a polystyrene resin foam sheet with an apparent density of 0.08-0.9 g / cm3 and a thickness of 0.1-3 mm, and the foam sheet contains A gram of the foam sheet per 1 square meter Titanium oxide, while the average bubble diameter in the thickness direction is 1-50 μm, the number of bubbles in the thickness direction is B, and A and B satisfy 3≦A≦70, B≧20 and B≧60-1.5×A.

Description

technical field [0001] The present invention relates to a light reflection sheet, and more specifically to a light reflection sheet composed of a polystyrene resin foam sheet. Background technique [0002] Conventionally, a light reflective material has been used in order to improve light utilization efficiency. For example, a light-reflecting material is placed on the backmost side of a liquid crystal TV to reflect light from a light source such as an LED or a cold-cathode fluorescent lamp (CCFL) to the front with good efficiency. In addition, light reflective materials are also mounted on fluorescent lamps or LED type lighting devices to reflect light with good efficiency. [0003] With the demand for energy saving in recent years, it is required to further improve the light utilization efficiency of the above-mentioned light reflective materials. Therefore, attempts are currently being made to increase light reflectance. Furthermore, when using light reflective materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/08B29C47/00C08J9/12B29K25/00B29K105/04B29L7/00B29C48/08B29C48/18B29C48/405
CPCB29C48/08B29C48/0012B29C48/18C08J9/0061C08J9/0066C08J9/122G02B5/0808C08J2205/044C08J2201/03C08J2203/06C08J2325/16C08J2325/06C08J2325/08C08J2425/02B29K2825/06B32B27/065B32B2266/0228B32B2307/416B32B2457/00B32B2457/20B29C48/405C08J9/00G02B5/08
Inventor 伊泽理小泉达哉木野彻
Owner JSP CORP
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