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Diamond Dotted Paper

  Made of Kraft paper coated with heat curable epoxy resin, the epoxy adhesive is
applied to both sides of the paper in a diamond pattern consisting of 9.5mm x9.5mm
diamonds with 15.9mm center spacing.

The Diamond Dotted Paper, alias such as: epoxy adhesive diamond Paper, Diamond
Dotted Presspaper, Double sided Diamond Pattern Paper, DDPP, DPRCP, D.D.P, DPP,
Diamond Dotted Insulating Paper, Varnished Paper, etc.

It is to be used in oil-immersed transformers for the insulation between of coils.
On the insulation layer, there is a layer dotted epoxy resin that will be changed
with high temperature change that is to be called as felt.

It is a kind of material with inertia, dry and no conglutination at normal temperature
(below 30 degree C), The Diamond Dotted Paper will make the electric conductor
forever felt up as a hard unit under the high temperature by its internal latency
substance. When the temperature is rising up to 90 degree C, The Diamond
Dotted Paper begins one-off thaw and then one-off solidification. When to keep the
temperature at 90 degree C for 90 minutes, the epoxy resin would paste on
neighboring cable and paper safely. The felt intensity is as high as to 70psl at 100
degree C (The value at least is equal to 0.275Mpa, America standard).

Packing:
In pallet 

 

 

 

 

 

 

Callper (Inch)  0.003 0.005 0.007 0.01 0.015 0.02
            (millimotor) 0.076 0.127 0.178 0.254 0.381 0.508
  0.08 0.13 0.18 0.25 0.38 0.5
Thickness tolerance: \mm(10%) 0.005 0.013 0.018 0.025 0.038 0.05
Width tolerance \5mm,all thickness
Apparent density :g/cm3 0.9 to 1.1,all thickness
Moisture content,% 6.0 to 10.0%,all thickness 
PH water extract: 6.0 to 8.0, all thickness
Ash content,% 1% maximum
Elongation MD% 4
              CMD 9
No-pollution oil of transformer Non-pollution
Coating thickness per side   mm 0.006 to 0.012
Tensile strength ,N/mm2  
Machine direction: 90 90 80 90 92 95
Cross machine direction 30 25 35 35 35 35
Mullen burst strength:Min(Psi) 40 65 90 150 200 300
Dielectric breakdown: 750 1100 1700 2100 3000 3300
(volts/layer,dry test)
Dielectric breakdown: 5.5 8.5 10.5 14 20 23.5
(Kilovolts/layer,oil test)
Bond strength:Psi Minimum 40 Psi sheer strengh, tested at 100 degrees 450 Kpa
                      KPa

 

    

  

 

 


 
               

                                                                                      TJPFTZ L.X. INTERNATIONAL TRADING CO.,LTD.  
                                                   Add: Rm 801,Block C,Building 2,Xin Li Ja,Xin Wen Hua Garden,Fu'an st,He Ping District,Tianjin,China.
                                                                                    Post code: 300021
                                                               Tel: 0086-22-81330769  /27314832   /27307427       Fax: 0086-22-27314830