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2.2 Main performance index: | |
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Table 1 Performance index | |
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Order | Item name | Unit | Test method | Index | 1 | Density | g/cm3 | GB/T5130 section 8.1 | (1.70-1.90) | 2 | Water absorption | mg | GB/T5130 section 8.2 | Refer to table 2 | 3 | Vertical layer direction bending strength | MPa | GB/T5130 section 5.1 | 340 | 4 | Vertical layer direction compression strength | MPa | GB/T5130 section 5.3 | (350) | 5 | Tensile strength | MPa | GB/T5130 section 5.7 | (300) | 6 | Compact strength (Simply strut-beam method) | KJ/m3 | GB/T5130 section 5.5.1 | 33 | 7 | Insulation resistance after water dipping | Ω | GB/T5130 section 6.3 | 5.0 × 108 | 8 | Mediate loss factor, 1MHz hour | ____ | GB/T5130 section 6.2 | ≤ 0.04 | 9 | Dielectric constant, 1MHz hour | ____ | GB/T5130 section 6.2 | ≤ 5.5 | 10 | Vertical layer direction electric strength at 90±2 transformer oil | KV/mm | GB/T5130 section 6.1 | Refer to table 3 | 11 | Parallel layer direction striking voltage | kV | GB/T5130 section 6.1 | ≥ 35 |
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Average hickness mm | Water absorption mg | Average thickness mm | Water absorption mg | Average thickness mm | Water absorption mg | 0.4 | ≤ 17 | 2.0 | ≤ 20 | 10 | ≤ 34 | 0.5 | ≤ 17 | 2.5 | ≤ 21 | 12 | ≤ 38 | 0.6 | ≤ 17 | 3 | ≤ 22 | 14 | ≤ 41 | 0.8 | ≤ 18 | 4 | ≤ 23 | 16 | ≤ 46 | 1.0 | ≤ 18 | 5 | ≤ 25 | 20 | ≤ 52 | 1.2 | ≤ 18 | 6 | ≤ 27 | 25 | ≤ 61 | 1.6 | ≤ 19 | 8 | ≤ 31 | Single side processing to 22.5 | ≤ 73 |
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Table 3 Electric strength | |
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Average thickness mm | Average strength kV/mm | Average thickness mm | Electric strength kV/mm | Average thickness mm | Electric strength kV/mm | 0.4 | ≥ 16.9 | 1.0 | ≥ 14.2 | 2.2 | ≥ 11.4 | 0.5 | ≥ 16.1 | 1.2 | ≥ 13.7 | 2.4 | ≥ 11.1 | 0.6 | ≥ 15.6 | 1.4 | ≥ 13.2 | 2.5 | ≥ 10.9 | 0.7 | ≥ 15.2 | 1.6 | ≥ 12.7 | 2.6 | ≥ 10.8 | 0.8 | ≥ 14.8 | 1.8 | ≥ 12.2 | 2.8 | ≥ 10.5 | 0.9 | ≥ 14.5 | 2.0 | ≥ 11.8 | 3.0 | ≥ 10.2 |
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3240 Epoxy phenol aldehyde Glass Cloth Laminated Sheet