SJ/T 10588.23-1994 Technical data of DB-489 electronic glass SJ/T10588.23-1994 Standard download decompression password: www.bzxz.net
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Electronic Industry Standard of the People's Republic of China Technical data of 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 percentage 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 ≥110wwW.bzxz.Net 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. 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.