TEL:021-50836933

E-MAIL:Sales@bestry-mate.com

Product

Sales Department:
+8621 50836933

E-mail:sales@bestry-mate.com

Postal Code:201206

Address:Room 209, Yunchuang Space, 325 Yunchuang Road, Pudong District, Shanghai

Spherical Alumina BAK series

Product Description:

BAK series spherical alumina are produced by high temperature melting-jet method developing on ordinary irregular shape Al 2 O 3 , and the spherical alumina has a high degree of sphericity and high content of α-Al2O3 phase with controllable particle size. Because of its unique and excellent physicochemical properties, the products have been widely used as the filler of thermal interface materials, thermal engineering plastics and aluminum-based Copper-Clad Laminates and so on.

Bestry is the first high-tech enterprise engaged in the production, development and sales of spherical alumina in China. During twelve years of the unremitting efforts and technology innovation, the product has reached the world most advanced standard in technical level and product stability. Except that we occupy the main market share, the long-term cooperation relationship with large technology companies coming from the United States, South Korea, Europe, West Asia, Taiwan and other regions or countries have been established.


Product Details Product Specifications Download

Product Features:

1. High Filling: High degree of sphericity, controllable particle size distribution, achieve high density filling for silicone and epoxy resin, to get the mixture with low viscosity and high mobility.

2. High Thermal Conductivity: Because of its almost perfect ball structure, the filler used in the raw materials can achieve multi-directional heat transmission. The whole mixed system is in state of good dispersion, so final products have excellent thermal conductivity and physical property.

3. Low Abrasion: Compared with irregular powder, the application of spherical filler can reduce the abrasion of the mixer, molding machines and other equipments, then prolong working life of relevant equipment.



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Critical Applications:

1. Thermal Interface Materials: thermal silica gasket, thermal grease , phase change materials.

2. Thermal Engineering Plastics: LED lamp cover, switch enclosures, electronic products shell, electronic chips.

3. Al-based Copper Clad Laminate:high-power LED circuit substrate, power circuit boards, etc.

4. Alumina Ceramic Filters.

5. Thermal Spray Coating.

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Technical Item 

Unit

BAK Series Product Code

BAK-1

BAK-2

BAK-5

BAK-10

BAK-20

BAK-30

BAK-40

BAK-70

BAK-90

BAK-120

Particle Size

D10

μm

0.71

0.69

2.54

4.55

10.50

16.88

23.77

44.32

55.23

92.39

D50

μm

1.08

2.18

5.52

10.43

20.80

30.52

41.54

71.54

87.96

122.98

D90

μm

3.21

5.24

9.09

20.80

37.24

48.87

66.44

106.50

134.92

172.07

Specific Surface Area

㎡/g

1.69

1.27

0.36

0.17

0.14

0.13

0.12

0.12

0.10

0.06

E.C.

μS/cm

6.07

5.40

5.65

4.05

6.87

7.95

4.65

6.18

8.15

6.45

pH Value

7.53

7.79

7.70

7.90

7.62

7.70

7.80

7.70

7.90

7.54

Moisture

%

0.05

0.03

0.03

0.03

0.03

0.03

0.03

0.03

0.03

0.04

True Density

g/cm³

3.71

3.70

3.74

3.76

3.79

3.79

3.81

3.87

3.88

3.89

Spheroidization Rate

%

96

98

98

98

96

98

96

96

95

95

Chemical

Composition

Al₂O₃

%

99.87

99.94

99.89

99.94

99.92

99.93

99.94

99.92

99.94

99.92

SiO₂

ppm

430

30

430

20

150

20

20

30

20

170

Fe₂O₃

ppm

140

70

140

40

60

60

50

60

60

140

Na₂O

ppm

90

100

10

60

140

90

110

90

70

90

* Remark: The characteristic values recorded in the table are typical for reference not the highest specification unless specified. Please contact Bestry sales representatives for specifications when you encounter any question.

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