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LPR-902
Powder wettability analyzer
LPR-902
is an automatic instrument for direct measurement of the wettability of
powders and fibers and other finely divided substances. By direct
measurement of the initial penetration rate of a liquid into a powder it
is possible to obtain a straightforward evaluation of the hydrophilicity
or hydrophobicity of the powder surface. The advantage is that there is
no need for preparing pellets or tablets or large and smooth surfaces of
the material studied to be able to make conventional contact angle
measurements. Moreover, the difficulties with the interpretation of
contact angle measurements made on macroscopic surfaces and their
correlation with the practical properties of the sample in a finely
divided state can be overcome. The instrument is equipped with
facilities for reproducible packing of the powder particles in the
sample. Thus one of the main obstacles and sources of inaccuracies
connected with studying the wetting of powders, i.e. obtaining a
reproducible packing of the particles, can be surmounted. If needed, it
is possible to alter the packing of the powder particles in the sample
automatically by software.
Applications
The LPR-902 is suitable for product development and research as well as
for quality arrurance and control of finely divided materials and their
surface treatment, e.g.:
+ Surface treatment of minerals, fillers
and reinforcement fibers
+ Coupling agents for fillers and
reinforcement fibres for plastics and
composites
+ Quality control of surface treatment
+ Determination of hydrophobicity and
hydrophilicity
+ Flotation studies; hydrophobicitation,
collectors and depressants
+ Food industry; surface treatment of
powders
+ Soil treatment; wetting of granulates
and pellets
+ Agriculture; wetting of soils and
influence of different treatment on seeds
+ Textile fibers; surface treatment and
impregnation
+ Surface treatment of rock materials
for bitumenous road surfaces
Performance
+ Automatic operation
+ Initial liquid penetration rate
+ Follow up during long time,
"finger print"
+ "Apparent" capillarity
+ Contact angle
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