текстолит импортный
| Phenolic Cotton Cloth Laminated Sheet | |||||||||
| Properties | Unit | Grade | |||||||
| 3025 | 5B | 5C | 5CS | 6 | 7 | 8 | |||
| Flexural strength perpendicular to laminations | ≥ | MPa | 100 | 90 | 70 | 70 | 110 | 90 | 100 |
| Bonding strength ( ≥10mm in thickness) | ≥ | N | - | 5500 | 5500 | 5500 | - | - | - |
| Impact strength parallel to laminations (Charpy) | ≥ | KJ/m2 | 8.8 | 7.8 | 5.0 | 5.0 | 7.0 | 7.8 | 6.0 |
| Insulation resistance after immersion in water (D-24/23) | ≥ | W | 1×106 | - | - | - | 1×106 | 5×107 | 5×107 |
| Dielectric strength perpendicular to laminations(in 90±2℃ transformer oil, 1 mm in thickness) | ≥ | MV/m | 0.82 | - | - | - | 0.82 | 5.1 | 6.3 |
| Breakdown voltage parallel to laminations (in 90±2℃ transformer oil) | ≥ | KV | 1 | - | - | - | 1 | 18 | 20 |
| Permittivity (50Hz) | ≤ | — | - | - | - | - | - | 5.5 | 5.5 |
| Density | g/cm3 | (1.30-1.40) | (1.30-1.45) | (1.30-1.45) | (1.30-1.50) | (1.30-1.40) | (1.30-1.40) | (1.30-1.40) | |
| Water absorption (D-24/23, 1.6mm in thickness) | ≤ | mg | 220 | - | - | - | 220 | 145 | 145 |
| Color | — | Natural | Black | Natural | |||||
| Reference standard | — | JB/T8149.2-2000 | Enterprise Standard | JB/T8149.2-2000 | |||||
| Characteristics & Applications:1. 5：Mechanical applications(coarse weave), with poor electrical properties2. 5B, 5C, 5CS, 5B and 5C are ecomomical products versus 5; 5CS is suitable for abrasive-resistance parts, but not recommended to be used as insulation material3. 6：Mechanical properties(fine weave), poor electrical properties, good machining performance 4. 7：Mechanical and electrical applications(coarse weave), better electrical properties than other phenolic cotton cloth laminates5. 8：Mechanical and electrical applications(fine weave), better electrical properties than other phenolic cotton cloth laminates. Good machining performance, recommended for small parts(as in type 6) | |||||||||
