DMD composite laminates,or called composite
insulation paper or Flexible laminates DMD. is two layer polyester fiber
non-woven fabric in both side and middle is polyester film .is three layer
composite insulating material.
Flexible laminate materials are comprised of two or more materials that make up a composite.Flexible laminates are most commonly used in applications where a thin layer of insulation is required. These applications typically require the material to be bent, formed, or simply punched into a shape that fits into a confined space. Typically applications include layer insulation in transformer coils, slot insulation in motors, turn-to-turn insulation in power generators, and phase-to-phase insulation in low voltage circuit breakers. These products have good dielectric property and good mechanical property.
DMD specification value
|
序号
NO.
|
指标名称
Item
|
单位
Unit
|
指标值
Normal value
|
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| 1 |
|
mm | 0.15 | 0.17 | 0.20 | 0.25 | 0.30 | 0.35 | |
| 2 |
|
g/m2 | 140±20 | 190±28 | 225±33 | 300±45 | 350±52 | 425±63 | |
| 3 |
|
um | 50 | 75 | 100 | 150 | 190 | 250 | |
| 4 | 拉伸强度TensileStengt | ||||||||
| 纵向不弯折 MD no bending | N/10mm | 80 | ≥120 | ≥140 | ≥190 | ≥270 | ≥320 | ||
| 纵向弯折后 MD after bending | 80 |
≥105
|
≥120 | ≥170 | ≥200 | ≥300 | |||
| 横向不弯折 TD no bending | 80 | ≥105 | ≥120 | ≥170 | ≥200 | ≥300 | |||
| 横向弯折后 TD after bending | 70 | ≥90 | ≥100 | ≥130 | ≥150 | ≥200 | |||
| 5 | 伸长率 Elongation | ||||||||
| 纵向不弯折 MD no bending | % | ≥15 | ≥15 | ≥15 | ≥15 |
|
|
||
| 纵向弯折后 MD after bending | ≥10 | ≥10 | ≥10 | ≥10 | ≥5 | ≥5 | |||
| 横向不弯折 TD no bending | ≥20 | ≥20 | ≥20 | ≥20 |
|
|
|||
| 横向弯折后 TD after bending | ≥10 | ≥10 | ≥10 | ≥10 | ≥5 | ≥5 | |||
| 6 |
击穿电压 Breakdown voltage
不弯折 Normal
|
KV | ≥6 | ≥7 | ≥9 | ≥12 | ≥15 | ≥18 | |
| 7 | 常态粘结性 Bonding strength at room temperature | － | 不分层 No delamination | ||||||
| 8 |
热态粘结性 （155±2）℃10分钟 Bonding strength at 155±2℃ for 10 min |
－ |
不分层、不起泡、不流胶 No delamination、blister and drainage |
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