Electrical properties

#1

Dear all,

I am designing a new device for High Voltage usage. The transparent resin looks interesting for visual aspect but I cannot find any electrical related specs such as the electrical permittivity (As/Vm) and the electrical strength (kV/mm). This is very important in order to know if the material will sustain an intense electrical field or if an arc will puncture (and destroy) it.

Any idea about those values or where I can find this?

Thank you very much in advance for your support.
Philippe

#2

Dear Philippe,

You can find electrical properties of the material in the table below.

Thermal/Electrical Properties UV Postcure
ASTM Method Property Description Metric Imperial
E831-05 C.T.E. -40 - 0°C (-40 - 32°F) 67 µm/m°C 37 µin/in°F
E831-05 C.T.E. 0 - 50°C (32 - 122°F) 93 µm/m°C 52 µin/in°F
E831-05 C.T.E. 50 - 100°C (122 - 212°F) 180 µm/m°C 100 µin/in°F
E831-05 C.T.E. 100 - 150°C (212 - 302°F) 187 µm/m°C 104 µin/in°F
D150-98 Dielectric Constant 60 Hz 4.0
D150-98 Dielectric Constant 1 KHz 3.8
D150-98 Dielectric Constant 1 MHz 3.5
D149-97a Dielectric Strength 15.9 kV/mm 404 V/mil
E1545-00 Tg 43°C 109°F
D648 HDT @ 0.46 MPa (66 psi) 50°C 122°F
D648 HDT @ 1.81 MPa (264 psi) 49°C 120°F

These values may vary and depend on individual machine processing and post-curing practices.

#3

Thank you very much
Best regards