MICA POWDER &
is a generic term applied to a group of a complex aluminium
silicate minerals having different chemical and physical properties.
It is listed by the ACGIH with a recommended TLV of 6 mg./cu.meter
in which toxic impurities are not present e.g. Inhalable silica
(quartz) less than 1%.
Mica (theroretical Chemical formula=KAI2(AISi3O10)(OH)2)
is a complex aluminosilicate minerals that have a sheet or plate-like
structure with remarkable cleavage parallel to the direction
of the large surface that allows it to be split or delaminated
into thin films that are transparent, flexible, elastic, and
tough. It has an outstanding physical, chemical, electrical,
thermal and mechanical properties which are not found in any
other products either natural or synthetic.
Mica is transparent, optically flat, colourless, resilient and
incompressible. It is waterproof and moisture-proof.
Mica is a complex hydrous silicate of aluminium containing potassium
and traces of several other elements. It is stable and practically
inert (except to hydrofluoric acid and concentrated sulfuric
acid) and virtually unaffected by the action of heat, light,
water, oil, solvents, alkalis and other chemicals.
Mica has a unique combination of high dielectric strength and
a uniform dielectric constant. It is therefore able to withstand
exposure to electrical discharge without oxidizing and serves
as an excellent insulator.
Mica is infusible and non-combustible and has low heat conductivity
and is not affected by extended exposure to electrical discharge
without oxidizing and serves as an excellent insulator.
Mica is relatively soft, flexible elastic and tough having high
tensile and flexural strengths and modules of elasticity.
Flakes is mica scrap ground into sizes ranging from 2 mesh
to 8 mesh. This material is prepared mainly by the means of
rotary hammer crushing machine in which the mica is literally
beaten till such time that the required size is not achieved
and the material passes out from graded sieves attached therein.
MICA FLAKES FOR PEARLESCENT PIGMENTS
MUSCOVITE MICA FLAKES of superior quality having low iron contents
are used in large proportion in production of PEARLESCENT PIGMENTS,
because of its reflective and refractive properties and its
ability to reproduce artificially a "mother of pearl" or nacreceous
colours from silver white through all shades of the rainbow
varying from a silky lustre to a glittering sparkle. Mica have
high refractive index (greater than sparkle. Mica have high
refractive index (greater than 2.5) and a good chemical, mechanical
and thermal stability.