SJ/T 10588.19-1994 Technical data of DB-472 electronic glass SJ/T10588.19-1994 Standard download decompression password: www.bzxz.net
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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 application 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±0.15bzxZ.net 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. Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.