SJ/T 10588.22-1994 Technical data of DB-488 electronic glass SJ/T10588.22-1994 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-488electronicglass1 Subject content and applicable scope This standard specifies the chemical composition and physical and chemical performance indicators of DB-488 electronic glass. This standard is applicable to glass materials used in electronic devices such as black and white cathode ray tubes and indicator tubes. 2 Reference standards GB9000 Standard method for chemical analysis of electronic glass Analysis of cerium oxide in color cathode ray tube glass GB9474.4 GB9622 3 Technical requirements Test methods for physical and chemical properties of electronic glass Chemical composition is shown in Table 1. Chemical composition Weight percentage 65.2±1.0 0.10±0.05 3.55±0.50 12.5±0.5 7.17±0.50 7.37±0.50 0.40±0.10 Note: 1) FeO, as impurity control, is not included in the percentage composition. 3.2 Physical and chemical performance indicators are shown in Table 2 Approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994 SJ/T10588.22--94 Test method GB9000.12 GB9000.10 GB9000.14 Implemented on December 1, 1994 Indicator name SJ/T10588.22-94 Average linear thermal expansion coefficient α in the range of 0 to 300°C Density Softening point Annealing point Strain point Dielectric at frequency 6MHz and temperature 20°C Loss tangent value tgo×10 Volume resistivity at 350℃ Igp Thermal stability Water resistance chemical stability level (94.5±2.0)×10- 2.679±0.010 665±10bzxz.net 465±10 425±10 ≥120 Test method GB9622.881 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 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℃. 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 and Qu Yuan. 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.