List of Characteristics/Properties of Ebonite
Very high insulation properties.
All hydrocarbon polymers have insulation properties.
Especially, ebonite provides excellent insulation performance.
<High-frequency dielectric loss>
Perfect for wired lines as much as wireless.
Provides extremely high resistance especially against ultraviolet rays.
Extremely low free sulfur. Contacting parts with metal also provide low sulfurization.
<Acid resistance, alkaline resistance>
Provides excellent resistance against chemicals, including acid and alkali, at room temperature.
Has hardness and strength comparable to metal.
<Appearance and workability>
Gives dark shiny gloss when polished. Easy to conduct a precision work and forming.
Water absorbability is extremely low compared to soft rubber.
Very high moisture resistance.
Therefore, there is no rapid reduction in insulation properties when moisture is absorbed.
The list below shows the characteristic of ebonite.
Please use as reference values.
|2.||Amount of water absorption||mg/100cm²||0.25‑0.3||0.2‑0.25|
|3.||Heating resistance (appearance)||-||No change||No change|
|-||(dimension change)||%||No change||No change|
|11.||Dielectric breakdown strength||kV/mm||27‑29||27‑29|
|12.||Specific resistance(volume)||Ωcm||10 to the 13th power or more||10 to the 15th power or more|
|-||Specific resistance(surface)||Ω||10 to the 13th power or more||10 to the 15th power or more|
|13.||Dielectric power factor||(10Mc)x10 to the negative 4th power||70‑90||70‑90|