Silicone-treated Magnesium Oxide Powder (MgO) – Heatecx Limited

Heatecx Limited

Silicone-treated Magnesium Oxide Powder (MgO)

MgO-AquaSeal Magnesium Oxide is an innovative Magnesium Oxide powder designed to overcome moisture challenges in the manufacturing of electric heating elements. This silicone-treated low-temperature MgO powder is the optimal choice for applications where exposure to water or condensation is a concern. Its silicone treatment imparts hydrophobic properties, resulting in superior MgO dielectric strength and stable thermal conductivity in heating elements, even under high humidity conditions. It is the ideal MgO powder for iron heaters and other elements requiring extra protection against corrosion and moisture-induced electrical failures.

MgO-AquaSeal Magnesium Oxide Powder is an electrical grade Magnesium Oxide specially formulated to offer exceptional moisture resistance, ideal for heaters operating in humid environments or at low temperatures. This silicone-treated low-temperature MgO powder incorporates a surface treatment that drastically minimizes moisture absorption, a critical factor for maintaining MgO dielectric strength and thermal conductivity in heating elements under adverse conditions. As a Magnesium Oxide (MgO), it ensures safe electrical insulation and efficient heat transfer, extending the lifespan of heating elements. It is the perfect solution for manufacturers seeking robust moisture protection and reliable performance in their electric heaters, guaranteeing electrical safety in heaters even in the most challenging environments.

MgO-AquaSeal Magnesium Oxide is an innovative Magnesium Oxide powder designed to overcome moisture challenges in the manufacturing of electric heating elements. This silicone-treated low-temperature MgO powder is the optimal choice for applications where exposure to water or condensation is a concern. Its silicone treatment imparts hydrophobic properties, resulting in superior MgO dielectric strength and stable thermal conductivity in heating elements, even under high humidity conditions. It is the ideal MgO powder for iron heaters and other elements requiring extra protection against corrosion and moisture-induced electrical failures. With MgO-AquaSeal, manufacturers can ensure maximum reliability and durability of their products, guaranteeing consistent performance and unparalleled electrical safety in heaters across a wide range of applications.

MgO-AquaSeal Magnesium Oxide Powder is indispensable in the manufacturing of electric heating elements that require high moisture protection and operate at low or medium temperatures. Its main uses include:

•       Heaters for Appliances with Moisture Exposure: Ideal for heating elements in washing machines, dishwashers, clothes dryers, and refrigerators, where silicone-treated low-temperature MgO powder prevents failures due to water absorption.

•       Aquarium Heaters and Low-Power Immersion Heaters: Used in heaters that are directly in contact with liquids, where MgO dielectric strength must be exceptional even in the presence of moisture.

•       Defrost Heaters in Commercial Refrigeration: Suitable for heaters in industrial and commercial refrigeration systems, where ice formation and condensation are constant.

•       Heaters for Outdoor or Humid Environments: In applications such as pipe heaters, gutter heaters, or heating elements for agricultural equipment, where weather protection is crucial.

•       Seat and Mirror Heaters in Automotive: For heaters that must withstand humidity and temperature variations in vehicles.

MgO-AquaSeal Magnesium Oxide Powder offers distinctive features and advantages, especially its moisture resistance:

•       Silicone Treatment: The most prominent characteristic of this silicone-treated low-temperature MgO powder is its coating that provides hydrophobic properties, minimizing moisture absorption and maintaining MgO dielectric strength.

•       Excellent Moisture Resistance: Designed for reliable operation in high-humidity environments, making it ideal for heaters in appliances and industrial applications exposed to water.

•       Superior Electrical Insulation in Wet Conditions: Maintains high MgO dielectric strength even after prolonged exposure to humidity, ensuring electrical safety in heaters.

•       Good Thermal Conductivity: Despite its treatment, it retains efficient thermal conductivity in heating elements, ensuring uniform and effective heat transfer.

•       Stability at Low and Medium Temperatures: Optimal for applications with operating temperatures up to 450°C, offering consistent performance in this range.

•       Consistent Flow: Its flow properties are suitable for automatic filling machines, allowing for efficient and uniform production of heaters.

Characteristic

HX-C9

HX-C8

HX-C7

HX-C6

Chemical Analysis (%)

       

MgO

≥97

≥96

≥94.5

≥93

CaO

≤1.0

≤1.5

≤2.0

≤2.0

Al2O3

≤0.9

≤0.9

≤0.9

≤0.9

Fe2O3

≤0.5

≤0.5

≤0.6

≤0.7

SiO2

≤1.5

≤2.0

≤2.5

≤3.0

L.O.I

≤0.20

≤0.20

≤0.25

≤0.35

Physical Properties

       

Flow Time (s/100g)

40±6

40±6

40±6

40±6

Flow Rate (s/100g)

175±25

175±25

175±25

175±25

Bulk Density (g/cm³)

2.30-2.45

2.30-2.45

2.28-2.38

2.28-2.38

Electrical Properties (Cold Condition)

       

Characteristic

Value (All grades)

     

Insulation Resistance (MΩ)

1x10^5

     

Withstand Voltage (V/1mA)

≥2500

     

Electrical Properties (Heating Condition)

       

Characteristic

HX-C9

HX-C8

HX-L7

HX-L6

Power Load (W/cm²)

7

7

6

6

Leakage Current (mA)

≤0.16

≤0.26

≤0.2

≤0.3

Withstand Voltage (V/1mA)

≥1800

≥1800

≥1700

≥1600

Electrical Properties (Humidity Condition)

       

Characteristic

Value (All grades)

     

Insulation Resistance (MΩ)

1x10^5

     

Withstand Voltage (V/1mA)

≥2500

     

Referenced Working Temperature

       

Grade

Temperature (°C)

     

HX-C9

≤450

     

HX-C8

≤450

     

HX-C7

≤350

     

HX-C6

≤350

     

MgO-AquaSeal Magnesium Oxide Powder, as a silicone-treated low-temperature MgO powder, requires proper handling to maintain its optimal properties and ensure electrical safety in heaters.

•       Storage: Store in a cool, dry place, in its original sealed packaging. Although silicone-treated, prolonged exposure to extreme humidity or temperature fluctuations can compromise its performance. Environmental humidity control below 60% and temperatures between 15-25°C are recommended.

•       Transportation: Transport in closed and protected containers to prevent exposure to moisture, contamination, and physical damage. Avoid excessive impacts or vibrations that could alter the powder's bulk density.

•       Usage: It is crucial to ensure that the Magnesium Oxide powder is dry before use. Despite its silicone treatment, if moisture absorption is suspected due to improper storage or prolonged exposure, a low-temperature annealing process (baking) can be beneficial to fully restore its insulating properties. This step is vital to guarantee MgO dielectric strength and heater efficiency. Use personal protective equipment (gloves, mask) to avoid dust inhalation.

•       Annealing: For heaters operating in very humid environments or if the powder has been exposed, gentle annealing at controlled temperatures before filling and sealing the heater is recommended to eliminate any trace of surface moisture and optimize the performance of Magnesium Oxide for electric heating elements.

•       Automatic Filling Machines: The flow properties of MgO-AquaSeal are consistent, facilitating its use in automatic heater filling machines. It is important to calibrate the machine to achieve uniform compaction density, which directly influences thermal conductivity in heating elements and the lifespan of the heating element.

•       Specific Considerations: This silicone-treated low-temperature MgO powder is ideal for heaters operating up to 450°C and exposed to humidity. Monitoring MgO dielectric strength during manufacturing is key to ensuring the final product's quality and electrical safety in heaters. The silicone treatment is especially beneficial for MgO dielectric strength in humid conditions, making it superior to other untreated MgO types in these environments.

FAQ

Electric heaters that operate in high-humidity environments, with condensation, or direct contact with liquids, benefit most from silicone-containing magnesium oxide, such as silicone-treated low-temperature MgO powder (MgO-AquaSeal). This includes heaters for appliances like washing machines, dishwashers, dryers, refrigerators, aquarium heaters, low-power immersion heaters, and heating elements for outdoor or industrial applications where weather and moisture protection is crucial. The silicone treatment significantly improves MgO dielectric strength in humid conditions, ensuring electrical safety and extending the heater's lifespan.

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