GB/T 37382-2019Optical functional films—Films for backlight unit of liquid crystal display—High temperature and high humidity aging measurement (English PDF)
光学功能薄膜 液晶显示背光模组用薄膜 高温高湿老化性能测定方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 25, 2019
Implementation date
February 1, 2020
Scope
GB/T 37382-2019 is the English-translated version of 光学功能薄膜 液晶显示背光模组用薄膜 高温高湿老化性能测定方法.
GB/T 37382-2019 is the Chinese standard "Optical functional films - Films for backlight unit of liquid crystal display - High temperature and high humidity aging measurement".
Its scope clause reads: This Standard specifies the measurement method of high temperature and high humidity aging of optical functional films for backlight unit of liquid crystal display.
This Standard is applicable to the measurement of high temperature and high humidity aging of optical functional films for backlight unit of liquid crystal display.
Its clauses include devices; specimen; test environment; test steps; result expression; test report. It was issued by the State Administration for Market Regulation on MARCH 25, 2019 and took effect on FEBRUARY 01, 2020.
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Document preview — GB/T 37382-2019
National Standard of the People's Republic of China
- ICS
- 71.080.99
- Classification
- G 15
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Devices4
- 4 Specimen5
- 5 Test environment5
- 6 Test steps5
- 7 Result expression7
- 8 Test report7
1 Scope
This Standard specifies the measurement method of high temperature and high humidity aging of optical functional films for backlight unit of liquid crystal display.
This Standard is applicable to the measurement of high temperature and high humidity aging of optical functional films for backlight unit of liquid crystal display.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2410, Determination of the luminous transmittance and haze of transparent plastics
GB/T 6739, Paints and varnishes - Determination of film hardness by pencil test
GB/T 9286, Paints and varnishes - Cross cut test for films
GB/T 25257, Optical functional films - Determination of warping degree
HG/T 4915, White reflective films - Determination of reflectance
3 Devices
3.1 Constant temperature and humidity aging box
Meet: maximum temperature >=65°C, maximum relative humidity >=95%, and continuous operation for more than 500h. Temperature accuracy: ±0.5°C.
2 - Specimen.
6 Test steps
6.5 Aging test
Set the constant temperature and humidity aging box as: testing temperature is 65°C and the relative testing humidity is 95%. When the set temperature and humidity are reached, put the specimen into the box. Conduct the 500h aging test to Group A3, Group A4, Group A5, Group A6, Group B1 and Group B2 specimens obtained according to 6.4. It must not interrupt during the test process.
6.6 Specimen balance after aging
After the test ends, place Group A3, Group A4, Group A5, Group A6, Group B1 and Group B2 specimens obtained according to 6.5 on the platform. Treat them according to the provisions of Clause 5.
6.7 Performance testing after aging
Respectively test adhesion, hardness, light transmittance, haze and warpage to post-test specimens of Group A3, Group A4, Group A5 and Group A6 obtained according to 6.6. Respectively test warpage and reflectivity to post-test specimens of Group B1 and Group B2.
In addition, the testing areas of specimen adhesion, hardness, light transmittance, haze and reflectance shall be beyond by 5mm or more around the edges and the clamping area.
7 Result expression
Compare with the testing results of Group A1, Group A2, Group A5, Group A6, Group B1 and Group B2 specimens before aging test, record, compare, calculate and analyze each performance parameter of Group A3, Group A4, Group A5, Group A6, Group B1 and Group B2 specimens after aging test. And determine the results.
8 Test report
The test report shall contain the following information:
a) reference to this Standard;
b) detailed instructions required to identify specimen, such as specimen […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2410Determination of the Luminous Transmittance and Haze of Transparent Plastics
- GB/T 6739Paints and varnishes - Determination of film hardness by pencil test
- GB/T 9286Paints and varnishes - Cross-cut test
- GB/T 25257Optical functional films - Determination of warping degree
- HG/T 4915White reflective films - Determination of reflectance
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