The middle temperature magnesium oxide powder adopts more than 97% fusing MgO powder as raw material. After crushing and grinding, adding proper additive, then fabricate it through high-temperature calcination.
1.Hight temperature resistance: excellent electrical performance, under middle temperature, it has low leakage of current, high security, is widely used for heaters of middle temperature.
2.High performance of filling: good flow property, can be more denser, good thermal effects.
3.MEZ-1 without silicon oil, is suitable for heater which is fabricated by hight temperature treatment. MEZ-2 and MEZ-3 with silicon oil, good moisture resistance, heater can be used directly without sealing. Production process is more simple and low cost.
|Temperature of operation °C||≤700||≤700||≤600|
|Normal condition||Insulation resistance MΩ||≥1000|
|Breakdown voltage V||2500|
|Heating condition||Surface load w/cm2||8||7||7|
|Current Leakage mA||≤0.2||≤0.2||≤0.15|
|Insulation resistance MΩ||≥3||≥3||≥4|
|Breakdown voltage V||≥1800|
|Humid conditions||Insulation resistance MΩ||0||≥1000||≥1000|
|Breakdown voltage V||0||2500||2500|
|Silicone oil treatment||without||with||with|
|Physical Properties||distribution of grain||40-325||40-325||40-325|
|flow speed s/%||180±15||180±15||180±15|
|Density of vibration g/cm3||2.30-2.40||2.30-2.40||2.30-2.40|
|Heater for industrial boiler||Heater for Electric kettle||Aluminium fin heater|
|Oil heater||Heater for soybean milk maker|