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Thermal Conductive Alumina Filler
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Thermal Conductive Alumina Filler

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Product description

  Our thermal conductive spherical Al2O3 filler (spherical Al2O3 for short) is widely used for silicone, sealant, epoxy, plastic, rubber etc. industries with its highα-phase conversion rate, high thermal conductivity and high filling capacity. Due to our profession in 99.99% and 99.998% high purity alumina production, our spherical Al2O3 enjoys much better conductivity with higher purity raw material than other suppliers.

Thermal Conductive Spherical Al2O3 Filler Specification

No.

Item

Unit

Product Model

RB-D-3

RB-D-5

RB-D-10

RB-D-20

RB-D-30

RB-D-40

RB-D-50

1

Appearance

/

white

powder

white

powder

white powder

white powder

white powder

white powder

white powder

2

Al2O3Content

%

≥99.9

≥99.9

≥99.9

≥99.9

≥99.9

≥99.9

≥99.9

3

Spherical Rate

%

≥95

≥95

≥95

≥95

≥95

≥95

≥95

4

Na20

%

≤0.02

≤0.02

≤0.02

≤0.02

≤0.02

≤0.02

≤0.02

5

Fe203

%

≤0.01

≤0.01

≤0.01

≤0.01

≤0.01

≤0.01

≤0.01

6

SiO2

%

≤0.03

≤0.03

≤0.03

≤0.03

≤0.03

≤0.03

≤0.03

7

D50

μm

3±1

5±1

10±2

20±2

30±3

40±3

50±4

8

BET

m2/g

0.4-0.7

0.4-0.7

0.4-0.7

0.3-0.5

0.3-0.5

0.3-0.5

0.3-0.5

9

Bulk Density

g/cm3

≥0.8

≥1

≥1.2

≥1.8

≥2.0

≥2.0

≥2.0

10

Conductivity

μs/cm

≤0.5

≤0.5

≤1

≤1

≤1

≤1

≤1

11

Oil Absorption

ml/100g

≤20

≤20

≤15

≤15

≤13

≤13

≤13

12

PH Value

 

5.5-6

5.5-6

5.5-6

5.5-6

5.5-6

5.5-6

5.5-6

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