1、Providing Samples:

We provide product solutions according to customers’ detailed requirements and help customers have a much better understanding to the properties of aluminium powders.

You may choose the samples that you need as the following form:

Application

Specification

Solar Energy

1-10um

Aluminium Paste

1-200um

Heat Conduction

1-250um

 

Industrial Aluminium Powder

1-500um

 

Custom aluminium powder

 

Supplying samples according to customers’ requirements.

 

2、Technical Support

1)Introduction of aluminium powder application:

The application requirements of solar energy industry:

To choose the aluminium powder of conductive phase for aluminium paste is extremely rigorous. Because the main properties of aluminium paste which include small contact resistance, strong adhesion and low aging coefficient etc. are directly affected by the properties of aluminium powder. Besides, the ashing of processing properties and aluminium bead are directly related to particle size.

When the interval of the particle size distribution is big, the big granular and small granular are staggered, so it is easy to fill the space and make the conductive phase arrange closely. The overall average size of aluminium powder is big, and the volume is relatively big. So the oxide film on the surface of the aluminium powder with big volume is thinner and it is easy to eliminate and form the conductive net.

Angang aluminium powder company controls the particle size and large particles strictly to improve the efficiency of solar cells.

The application requirements of aluminium paste:

Because the surface of aluminum can strongly reflect the whole visible spectrum which including the blue light, the aluminium pigment can have the bright blue & white mirror reflected light. Aluminium pigment use flaky aluminium powder. The coverage of alimunium powder depends on the specific surface area. The aluminium powder is extending in the process of grinding, then its thickness is decreased, the surface area increased and the coverage is improved. There many factors to influence the coverage of aluminium powder. For example, if the aluminium powder has a bad dispersity, the coverage will be poor. Besides, when the aluminium powder is in the high shear force, the coverage will be also affected because the aluminium powder has had the radial fracture and the radius-thickness ratio is reduced.

 

2)Glossary

Sieve Analysis

Earlier method for determining the particle size distribution; this involves the use of several superimposed sieves in order to separate an inhomogeneous pigment powder out into individual fractions. The fractions can then be recorded quantitatively.

Atomized Aluminium Powder

It is created by atomization when the melting aluminium is in high pressure and it is used in producing the aluminium pigments.

Grain Diameter

In power body, granular size is showed as its space scope of the linear dimension occupied, it is called grain diameter. For spherical particles, its diameter is grain diameter.

Particle Size

The average size of powders is called the particle size of the powders.

Grain Diameter Distribution

 

It is also called particle size distribution, means the numbers of particles which in order of size within a certain range in the percentage of total particle group.

Void Ration

 

Not be occupied by the particles in powders, the volume ratio of spatial volume and the showed volume of the whole powder layer including space is the void ration.

Loose Density

It is also called volume density, means the weight of the grain in unit volume including the whole filling layer with all voids between particles in certain filling state.

Tap Density

In the defined conditions, the tested weight of unit volume of the powders in container after tapping.

Specific Surface Area

The total surface area of the unit weight powders, it often uses m   /g.

Shape Coefficient

The ratio for thickness and diameter of the flake paint.

Silk Gloss Type

Fine and light aluminium pigment with a narrow particle size distribution.

Measuring method of particle size

Methods Classification

Measuring Equipment

Measuring Result

Observation Method

Optical Microscope

Scanning Electron Microscope

Transmission Electron Microscope (TEM)

Image Analyzer

The shape parameters of particle size and particle size distribution

Sieving Method

Electromagnetic Vibrating Sifting

Sonic Vibrating Sifting

Particle size distribution histogram

Sedimentation Method

Gravity

Settlement Gauge with Sedimentation Balance Light Through

Settlement Gauge with X-Ray Through

Particle size,  particle size distribution

Centrifuge

Settlement Gauge with Balance Light Through

Settlement Gauge with X-Ray Through

Particle size,  particle size distribution

Field Scanning Method

Laser Diffraction Particle Size Analyzer

Photon Coherent Spectroscopy Analyzer

Particle size,  particle size distribution

Fluid Scanning Method

Kurt Technical Instrument

Particle size distribution, number calculation

Surface Method

BET Absorption Apparatus

Gas Through Instrument(Fsss)

Specific surface area, average particle size