MANUFACTURERS OF FLAME-RETARDANT FUNCTIONAL FILLERS
(Our MgOH products save lives)
and Flame Retardant/Smoke Suppressant in one product
Reduces Smoke Density
Thermally Stable up to 340º C
Magnesium Hydroxide Work?
above 340º C magnesium
hydroxide decomposes Endothermically emitting water according
to the reaction:
2 ------ MgO + H2O
effect leads to temperature reduction
vapor as decomposition product forms a protective steam
layer in the gas phase
Magnesium Oxide intermediates with absorption capability
to reduce smoke density
of an inert Magnesium Oxide protective layer inhibits further
spread of flame
to Alumina Trihydrate
Hydroxide is much more reactive than Alumina Trihydrate
(ATH). Whereas ATH releases the available water over a
broad range (230º C to 430º C), Magnesium Hydroxide
releases the available water over a much narrower range
(330º C or 630º F to 430º C).
In simple terms this compares to spraying a fine mist of
water over a fire (ATH) as opposed to dousing the fire
with a full bucket of water (Magnesium Hydroxide). The
quick release of water enhances the flame retardant properties
of Magnesium Hydroxide.
Magnesium Hydroxide releases water at a higher
temperature than ATH. The higher temperature release is
at a more critical point that reduces the spread of the
Magnesium Hydroxide particles, if viewed under a
microscope, are plate-like versus the spherical particles
of ATH. These plate-like particles overlap one another
similar to fish scales or roofing shingles. Pound for pound
these plate-like particles offer much more exposed surface
area than spherical ATH particles. Therefore more particles
are directly exposed to the flame. Also, the plate-like
particles provide more strength, flexibility and reinforcement
in the finished product as opposed to spherical particles.
Magnesium Hydroxide is a natural mix of particles.
There is particle penetration and integration within Magnesium
Hydroxide rather than having ATH and calcium carbonate
particles mixed side by side. This allows a better distribution
of the fire retardant and smoke suppressant properties.
Hydroxide has stabilizing characteristics that tend to
neutralize acid and toxic smoke. ATH does not provide these
Magnesium Hydroxide during the burning reaction forms
a “Char-Ash” in front of the flame,
which suppresses the flame.
to Alumina Trihydrate
Physical properties such as viscosity
cure rate, stress strain and durometer, suggest that magnesium
hydroxide is virtually indistinguishable from ATH from a
filler performance standpoint.
has been established that combinations of ATH and Magnesium
Hydroxide produce less smoke than compounds filled with
the same total loading of either mineral alone.
Hydroxide, because of its acid scavenging properties, can
play a useful role in halogenated compounds by reducing
acid gas emissions.
some of the heat, magnesium hydroxide prevents or delays
ignition and retards combustion of polymeric materials.
of ATH and Magnesium Hydroxide
Content Loss on Ignition (LOI)
than 230º C
than 330º C
less than 350DIN 53208
standard dry ground products and a surface-treated product
to aid with dispersion and workability.
products offer by Cimbar performance Minerals:
Barium Sulfate (Cimbar EX, UF, XF, 325 & PC
to name a few)
Iron Oxide (4400 Series) Drilling Fluid
Barite (Bara 200 Series)
Pharmaceutical Barite (Bariscan
Bleached Industrial Barite (MitiWite Series
Calcium Bentonite Clay
14047 Industrial Road, Houston Texas 77015
Contained herein are based on data which is believed to
be reliable, and is offered in good faith to be applied
accordingly to the users own best judgment. We will not assume
responsibility for the accuracy of this data, or liability,
which may result from the use of these products. Likewise,
no patent liability is assumed for the use of these products
in any manner, which could or would infringe patent rights
and Bariace are registered trademarks of Sakai Chemical
Industry Company Ltd