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Flexible laminates DMD,insulating paper DMD

        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
1  
标称厚度
 
mm 0.15 0.17 0.20 0.25 0.30 0.35
2  
标称定量及允许偏差
 
Nominal weight and tolerance
g/m2 140±20 190±28 225±33 300±45 350±52 425±63
3  
薄膜标准厚度
 
Nominal thickness of film
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