Technical data of Type DB-472 electronic glass

SJ/T 10588.19-1994 Technical data of DB-472 electronic glass SJ/T10588.19-1994 Standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China
Technical data of typeDB-472 electronic glass
Technical data of typeDB-472 electronic glass1Subject content and scope of applicationbZxz.net
This standard specifies the chemical composition and physical and chemical performance indicators of DB-472 electronic glass. This standard is applicable to glass materials used in electronic devices such as black and white cathode ray tubes. Reference standards
GB9000
GB9622
Standard method for chemical analysis of electronic glass
Test method for physical and chemical properties of electronic glass
GB9474.1~.3Test method for physical properties of color cathode ray tube glass GB9474.4
Technical requirements
The analytical chemical composition of cerium oxide in color cathode ray tube glass is shown in Table 1.
Chemical composition
Weight percentage
66.50±1.00
2.93±0.15
12.00±0.5
3.40±0.15
6.50±0.15
7.30±0.15
0.60±0.04
0.15±0.02
Note: 1) Fe, O are controlled as impurities and are not included in the percentage composition. Approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994 SJ/T10588.19-94
Test method
GB9000.11
GB9000.12
GB9000.10
GB9000.12
GB9000.14
Implemented on December 1, 1994
3.2 Physical and chemical performance indicators See Table 2
Indicator name
SJ/T10588.19-94
Average linear thermal expansion coefficient in the range of 0 to 300℃Density
Softening point
Annealing point
Strain point
Dielectric loss tangent value at frequency 6MHz and temperature 20C tg8x10|| tt||Volume resistivity Igp at 350C
Light transmittance (Tsu) (%)
Chromaticity coordinates
Water resistance and chemical stability level
(93.0±1.5)×10-7
2.67±0.015
654±5
460±5
420±5
Test method
GB9622.82)
Within pentagonal standard coordinates\GB9474.2GB9622.11
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 10 minutes, and then starts the measurement. Continue to increase the furnace temperature, and measure once every 10℃ increase until the measurement ends at 390℃. 2)
Additional Notes:
This standard is under the jurisdiction of the Standardization Research Institute of the Ministry of Electronics Industry. 0.3028
This standard was drafted by the 773rd Factory and the Standardization Research Institute of the Ministry of Electronics Industry. The main drafters of this standard are Su Mei and Liu Chengjun.
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