Spherical Alumina Powder (High Thermally Conductive) Description
Spherical Alumina Powder (High Thermally Conductive) is a deep-processed product from the SSAC series through a series of special calcining, cleaning, screening, and other processes. These processes not only maintain the spheroidization rate of the product but also improve the content of the α phase as well as reduce the specific surface area. Therefore, Spherical Alumina Powder (High Thermally Conductive) plays a more powerful thermal conductivity in the polymer matrix material.
Spherical Alumina Powder (High Thermally Conductive) Specifications
Item
|
Unit
|
SSAHTC-5
|
SSAHTC-40
|
SSAHTC-70
|
SSAHTC-90
|
SSAHTC-120
|
Particle Size
|
D10
|
μm
|
4.82
|
25.23
|
46.6
|
58.28
|
90.63
|
D50
|
μm
|
7.68
|
42.44
|
71.61
|
87.79
|
119.95
|
D90
|
μm
|
11.99
|
64.73
|
106.28
|
131.34
|
168.95
|
Specific Surface Area
|
m2/g
|
0.25
|
0.06
|
0.04
|
0.03
|
0.02
|
Electric Conductivity
|
μS/cm
|
2.94
|
3.32
|
3.11
|
3.3
|
3.9
|
pH Value
|
-
|
7.14
|
7.62
|
7.24
|
7.57
|
7.44
|
Moisture
|
%
|
0.03
|
0.03
|
0.02
|
0.03
|
0.03
|
True Density
|
g/cm3
|
3.78
|
3.83
|
3.87
|
3.91
|
3.92
|
Spheroidization rate
|
%
|
96
|
98
|
96
|
95
|
95
|
Chemical Composition
|
Al2O3
|
%
|
99.93
|
99.97
|
99.96
|
99.95
|
99.95
|
SiO2
|
ppm
|
430
|
100
|
150
|
257
|
277
|
Fe2O3
|
ppm
|
180
|
90
|
160
|
148
|
130
|
Na2O
|
ppm
|
90
|
110
|
90
|
95
|
93
|
For Specifications of other grades, please click here.
Spherical Alumina Powder (High Thermally Conductive) Applications
1. Thermally Conductive Materials: Highly thermally conductive spherical alumina powders are commonly used as fillers or enhancers in thermally conductive materials. They can be added to plastics, rubbers, and other composite materials to enhance the overall thermal conductivity of the material, which is used to manufacture highly efficient heat-dissipation electronic devices, lighting products, and electric vehicle parts.
2. Thermally Conductive Pastes and Potting Materials: In the electronics industry, highly thermally conductive spherical alumina powders are used as a key component in thermally conductive pastes and potting materials. They are filled between electronic components and heat sinks to help conduct and disperse heat effectively, preventing overheating and damage to equipment.
3. Thermally Conductive Pads and Sheets: Thermally conductive pads and sheets used in a variety of electronic devices and electronic modules are typically made with highly thermally conductive spherical aluminum oxide powders. These products provide excellent thermal contact and heat dissipation, maintaining equipment stability and long-term reliability.
4. Metal Substrate Coatings: In the electronics and semiconductor industries, spherical alumina powders are commonly used to coat metal substrates to enhance their thermal conductivity. These coatings are used in electronic heat sinks, integrated circuit packages, and thermal solutions for high-power electronic devices.
5. High-Temperature Sealing Materials: In high-temperature sealing applications, such as those found in automotive engines and aerospace equipment, highly thermally conductive spherical alumina powders provide excellent thermal conductivity to ensure heat resistance and sealing effectiveness of the sealed parts.
6. Thermally Conductive Interface Materials: Spherical alumina powders are widely used in thermally conductive interface materials for the thermal management of electronic components and semiconductor devices. They are filled in thermally conductive pads and pastes to ensure effective heat dissipation and temperature control of electronic components.
7. Optical and Laser Equipment: In high-power lasers and optical equipment, spherical alumina powders are used to manufacture optical components and cooling systems with high thermal conductivity, ensuring stable operation of the equipment for long periods without overheating.
Spherical Alumina Powder (High Thermally Conductive) Packaging
Our Spherical Alumina Powder is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
Spherical Alumina Powder (High Thermally Conductive) FAQs
Q1: How does spherical alumina powder improve thermal conductivity in materials?
A: The high thermal conductivity of alumina helps dissipate heat effectively. Its spherical shape ensures uniform distribution and minimizes voids in composite materials, leading to enhanced thermal management.
Q2: How is spherical alumina powder produced?
A: It is typically produced through methods such as spray drying, flame synthesis, or plasma processing. These methods help achieve the desired spherical shape and high purity.
Q3: What particle sizes are available for spherical alumina powder?
A: Spherical alumina powder is available in various particle sizes, ranging from nanometers to micrometers, depending on the specific application requirements.