TEL:021-50836933

E-MAIL:Sales@bestry-mate.com

Product

Sales Department:
+8621 50836933

Bu Shaohua:18015952556

Vincent:15002296304

E-mail:lh@bestry-mate.com

Postal Code:201206

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

Spherical Alumina

Product Description:

    BAK series spherical alumina are produced by high temperature melting-jet method developeing on ordinary irregular shape Al2O3, and the spherical alumina has a perfect spherical structure and high content of α-Al2O3 phase with controllabe 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 etc,.
     Bestry is the first high-tech enterprise engaged in the production,  development and sales of spherical alumina in China. During ten years of  the unremitting efforts, 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 and continous cooperations relationship with large technology companies coming from the United States, South Korea, West Asia, Taiwan and other regions or countries have been established.

Product Details Product Specifications Download

Product Features:

1. High Filling: High granularity, controllable particle size distribution, achieve high density filling for silicone and plastics, and get the compounds with low viscosity, good flow ability.
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 ordinary corner powder, the application of spherical filler can reduce the abrasion of the mixer, molding machines and other equipment, then prolong relevant working life.
  
  

Critical Applications:

1. Thermal interface material: thermal silica gasket, thermal grease, thermal conductivity potting, thermal double-sided adhesive, phase change materials.
2. Thermal Engineering Plastics: LED lamp cover, switch enclosures, electronic products shell, electronic chips, such as cooling components.
3. Al-based Copper Clad Laminate: high-power LED circuit substrate, power circuit boards, etc.
4. Alumina ceramic filters, artificial corundum, man-made sapphire raw materials.

  

  





Technique Date

Unit

BAK Series Product Code

BAK-2

BAK-5

BAK-10

BAK-15

BAK-20

BAK-30

BAK-40

BAK-70

BAK-90

BAK-120

Size

Distribution

D10

μm

0.07

2.02

5.13

7.24

10.21

13.96

23.17

41.46

38.85

92.39

D50

μm

2.25

5.20

11.30

14.09

20.73

29.78

41.44

70.30

82.13

122.98

D90

μm

4.46

9.60

21.88

22.97

34.95

46.87

67.59

107.13

136.06

172.07

Appearance

--

White

White

White

White

White

White

White

White

White

White

Melting Point

oC

2050

2050

2050

2050

2050

2050

2050

2050

2050

2050

Specific Surface Area

m²/g

1.27

0.36

0.17

0.14

0.14

0.09

0.12

0.16

0.16

0.11

Electric Conductivity

μS/cm

5.40

5.65

4.05

4.88

6.87

8.05

4.65

6.18

8.15

6.45

pH

--

7.79

7.70

7.90

7.78

7.62

7.70

7.80

7.70

7.30

7.54

Moisture

%

0.03

0.03

0.03

0.03

0.03

0.03

0.03

0.03

0.03

0.04

Density

g/cm³

3.70

3.74

3.68

3.82

3.72

3.62

3.81

3.87

3.82

3.84

Spheoidization

%

98

96

98

98

97

98

97

95

96

96

Chemiccal Composition

Al2O3

%

99.8

99.8

99.8

99.8

99.8

99.8

99.8

99.8

99.8

99.8

SiO2

ppm 

392

265 

390 

370 

190 

270 

160 

220 

342 

271 

Fe2O3

ppm 

171 

110 

110 

110 

49 

47 

70 

110 

174 

120 

Na2O

ppm 

187 

54 

68 

140 

120 

73 

58 

94 

124 

139 

Remarks: 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.

More than that !
I
n order to meet customer’special demands on higher filling rate and higher thermal conductivity. We also developed and produce another two types of products including BAM series and BAH series, both of them belong to custom-made products. 



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