GB/T 20629.4-2021 is the fourth part of the series of standards for non-cellulose paper for electrical use, which formulates specifications for polyaromatic amide fiber paper containing mica particles. The standard specifies the scope of application, specifies the classification, technical requirements, test methods, inspection rules, etc. of such papers, covering physical, electrical and other performance indicators, providing a unified technical basis for the production, inspection and quality control of polyaromatic amide fiber paper containing mica particles, and ensuring the electrical performance and Reliability of products.
| Status | Active |
|---|---|
| CCS | K15 | ICS | 29.035.99 |
| Release Date | 2021-12-31 00:00:00 | Implementation Date | 2022-07-01 00:00:00 |