DK Glass Fabric

  • Glass type D Glass
  • Typical style 2116, 7628
  • Application 5G Electric board reinforcement


DK glass fabric is woven from new glass formula D glass fiber yarn with specially dielectric properties. It is widely used for electromagnetic wave, high frequency electronic circuit board.

Properties

Standard

E glass

D glass

Density, g/cm3 

ISO1183

2.58-2.63 g/cm3

2.29-2.32

Dielectric constant, ε

ASTM D150 1MHz

6.6-6.8

4.2-4.6

Dielectric loss, tanδ

ASTM D150 1MHz

0.007

Less than 0.001

Thermal expansion coefficient, x10-6/K

ASTN D696

5.5

Less than 3.3

Refractive index, %

ASTM C1648

1.54

1.48