Technical data of Type DB-489 electronic glass

SJ/T 10588.23-1994 Technical data of DB-489 electronic glass SJ/T10588.23-1994 Standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China
Technical data of type DB-489 electronic glass
Technical data of type DB-489 electronic glass 1 Subject content and scope of application
This standard specifies the chemical composition and physical and chemical performance indicators of DB-489 electronic glass. This standard is applicable to glass materials used in the neck of black and white picture tubes. 2 Reference standards
Standard method for chemical analysis of electronic glass
GB9000
GB9622
3 Technical requirements
Test method for physical and chemical properties of electronic glass
3.1 Chemical composition See Table 1.
Chemical composition
3.2 Physical and chemical performance indicators are shown in Table 2
Weight percentagebZxz.net
56.3±1.5
2.90±1.0
Approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994 SJ/T10588.23--94
Test method
GB9000.12
GB9000.10
Implemented on December 1, 1994
Indicator name
SJ/T10588.23-94
Average linear thermal expansion coefficient α in the range of 0 to 300℃ Density
Softening point
Annealing point
Strain point|| tt||Dielectric loss tangent tgox104 at frequency 6MHz and temperature 20C
Volume resistivity Igp at 350℃
Thermal stability
Water resistance and chemical stability level
(91.0±2.0)×10-7
3.050±0.015
620±10
435±10
395±10
≥110
Test method
GB9622.81)
GB9622.11
Note: 2) Articles 4.5 and 4.6 are combined and carried out as follows: The measurement starts from the starting point, keeps warm at 300℃ for 10min, and then starts measuring. Continue to increase the furnace temperature, measuring every 10℃ until the temperature reaches 390℃. Additional Notes:
This standard is under the jurisdiction of the Standardization Institute of the Ministry of Electronics Industry. This standard was drafted by Tianjin Jinjing Glass Shell Co., Ltd. and the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Li Zongpu, Liu Chengjun, Qu Yuan, and Shen Bopeng.
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