Spherical Alumina

应用进口核心设备，采用高温熔融喷射法生产的BAK系列球形氧化铝，具有球形率高、α相氧化铝含量高等特点，用作橡胶、塑料的填充剂以及陶瓷原料时显示出优越的性能。

BAK series spherical alumina is having high globularity with high thermal conductivity, developed by high temperature melting technologies. Indicates excellent characteristics for rubber and plastic filler and ceramic base material.

主要特点/Characteristic

1、高填充性

其粒子球形率高、粒度分布宽，可对橡胶、塑料进行高密度填充，可得到粘度低、流动性好的混合物。

2、高热传导率

因其可高密度填充，与结晶硅粉相比，可得到热传导率高、散热性好的混合物。

3、低磨损性

因其外观为球形，对混炼机、成型机及模具等设备的磨损大大降低，可延长设备的使用寿命。

1. High filling density: With its large particle diameter and broad particle size distribution, realizes high-density filling for rubber and plastic and produces compounds with low viscosity and good fluidity.

2. High thermal conductivity: High filling density enables production of compounds with higher thermal conductivity and higher heat dissipation rate compared to crystalline silica.

3. Low abrasivity: Due to its Spherical shape, less-wearing of kneading machines, forming machines and dies.

用途/Application

（1）散热片、散热基板用填充剂（MC基板）、散热油脂、相变化片

（2）半导体封装树脂用填充剂

（3）有机硅散热粘结剂及混合物用填充剂

（4）陶瓷过滤器

a. Filler for heat sink sheet, filler for heat dissipation board (MC board), heat dissipating grease, phase change sheet

b. Filler for semiconductor sealing resin

c. Silicone-based heat dissipating adhesive, filler for compound

d. Ceramic filter

产品规格/Specification

型号/Type　中位粒径D50（um）　比表面积S.S.A.(m/g)

BAK-0050　5±1　0.6

BAK-0100　10±2　0.5

BAK-0200　20±3　0.4

BAK-0300　30±3　0.3

BAK-0400　40±5　0.2物理性质/Physical Property

型号/Type
项目/Item　BAK Series

外观/Appearance　白色粉末/White powder

比重/Specific Gravity (g/cm)　3.60

熔点/Melting point (℃)　2050

水分/Moisture (%)　≤0.05

电导率/ EC（uS/cm）　≤10

PH　7.0±0.5

α-Al2O3含量/α-Al2O3 Cotent（%）　≥90

成球率/Spherical particles ratio（%）　≥90化学性质/Chemical Property

型号/Type　化学成分/Chemical Composition

Al2O3%　SiO2%　Fe2O3%　Na2O%　K2O%　MgO%　CaO%

BAK-0050　≥99.0　0.05　0.05　0.03　0.02　0.01　0.01

BAK-0100　≥99.0　0.05　0.05　0.03　0.02　0.01　0.01

BAK-0200　≥99.0　0.05　0.05　0.02　0.01　0.01　0.01

BAK-0300　≥99.0　0.05　0.05　0.02　0.01　0.01　0.01

BAK-0400　≥99.0　0.05　0.05　0.02　0.01　0.01　0.01