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GB/T 24981.2-2010 English PDF

GB/T 24981.2-2010 (GB/T24981.2-2010, GBT 24981.2-2010, GBT24981.2-2010)
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GB/T 24981.2-2010English239 Add to Cart 3 days [Need to translate] Test methods of long afterglow phosphors activated by rare earths -- Part 2: Determination of relative brightness Obsolete GB/T 24981.2-2010
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BASIC DATA
Standard ID GB/T 24981.2-2010 (GB/T24981.2-2010)
Description (Translated English) Test methods of long afterglow phosphors activated by rare earths. Part 2: Determination of relative brightness
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H14
Classification of International Standard 77.120.99
Word Count Estimation 6,624
Date of Issue 2010-08-09
Date of Implementation 2011-05-01
Drafting Organization Dalian Luming Luminescent Technology Corporation
Administrative Organization Rare National Standardization Technical Committee
Regulation (derived from) National Standard Approval Announcement 2010 No.3 (Total No.158)
Proposing organization National Rare Earth Standardization Technical Committee
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee
Summary This standard specifies the method for measuring the relative brightness of the rare-earth phosphor afterglow. This section applies to a relatively rare long afterglow phosphor brightness measurement.

Standards related to: GB/T 24981.2-2010

GB/T 24981.2-2010
Test methods of long afterglow phosphors activated by rare earths Part 2. Determination of relative brightness
ICS 77.120.99
H14
National Standards of People's Republic of China
Test methods of rare earth long afterglow phosphors
Part 2. Determination of relative brightness
Part 2. Determinationofrelativebrightness
Issued on. 2010-08-09
2011-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 24981 "rare earths long afterglow phosphor Test Method" is divided into two parts.
--- Part 1. Determination of emission peak and chromaticity coordinates;
--- Part 2. Determination of relative brightness.
This is Part 2.
This part of the National Standardization Technical Committee rare and centralized.
This section is responsible for drafting. Dalian Luming Luminescent Technology Co., Ltd.
Participated in the drafting of this section. Shanghai Yuelong New Materials Co., Ltd. Sichuan Sony source, Guangzhou Nonferrous Metal Research
Hospital, Changzhou City Xinyuan Rare Earth Luminescent Materials Co., Ltd., Inner Mongolia Rare Earth days color light-emitting materials limited liability company, Institute of Rare Earth New Material Co.
Limited.
The main drafters of this section. Qu Zhibo, Cao Yingling, Xia Wei, Xiao Zhiguo, Zhang Hongwei, in crystal Jie.
The drafters of some of the participants. Hui-new, Zhang, Nihai Yong, Wang, Liwen Biao, Hu Yunsheng.
Test methods of rare earth long afterglow phosphors
Part 2. Determination of relative brightness
1 Scope
This section GB/T 24981 specifies the method for the determination of rare earth long afterglow phosphor relative brightness.
This section applies to the rare earth long afterglow phosphor relative brightness determination.
2 principle of the method
Xenon lamp as an excitation light source sample illumination direct exposure to regulations, after excitation at a predetermined time to shut down a xenon lamp, by luminance meter
Measurement and recording intervals specified in point afterglow luminance value of the sample fluorescence, the same classification of rare earth photoluminescent (Afterglow) phosphor phase
The luminance value of the luminance national standard sample under the same test conditions compared to obtain the relative brightness of the sample.
3 instruments and apparatus
3.1 illuminance testing device
3.1.1 Measuring range. 10lx ~ 1 × 105lx, light meter accuracy to meet the national requirement level.
3.1.2 Metering sensitive probe of the photosensitive surface diameter. 8mm ~ 12mm.
3.1.3 Illumination. illumination in low light fluorescent powder to be tested anywhere on the surface of the test sample illumination are within 25lx ± 0.5lx range; photos
Shot in the other phosphor samples to be tested anywhere on the test surface illuminance are within 1000lx ± 5lx range.
3.2 emission luminance testing device
3.2.1 Measuring range. 1.0 × 10-5cd/m2 ~ 1.0 × 102cd/m2.
3.2.2 Minimum value display 4-digit precision required to achieve a luminance meter requirements at the national level.
3.2.3 have the ability to test the average luminance of the measured area issued.
3.3 excitation light source
Color temperature 5500K ~ 6500K, color rendering index greater than 95 quartz bulb xenon lamp, ultraviolet B band, A band and even the visible region
Continued spectrum, every 10min light output stability better than 1% throughout the life meet those requirements.
3.4 Sample Tray
Sample tray is black, inner diameter of 45mm ± 5mm, depth of 5mm ± 2mm. Material not affect the spectral characteristics of the excitation light source
And spectroscopic properties of rare earth long afterglow phosphor.
4 sample preparation
4.1 as specified in Table 1, selecting the sample to be tested corresponding rare earth photoluminescent (Afterglow) relative brightness of the phosphor national standard sample.
Table 1
Chemical composition system type test sample phosphors national standard sample number and name brands
Alkaline earth aluminate
Conventional yellow-green earth aluminate
207001A, 207001B, 207001C,
207002A, 207002B, 207002C,
207003A, 207003B
Conventional blue-green earth aluminate
207001D, 207001E,
207002D, 207002E
Particle type yellow-green earth aluminate 207004A, 207004B, 207004C
RE STORING (Afterglow) Phosphor
The relative brightness national standard sample
GSB04-2534-2009
...