High-aspect-ratio muscovite mica 100 is widely used as a reinforcing filler and extender in composite plastic polymer systems because of its functional, morphological and surface characteristics. The addition of mica in plastic polymers improves its material properties significantly, such as, higher heat deflation temperature, increase tensile and flexural strengths, reduce isotropic shrinkage and permeability, enhance the dielectric, heat resisting and insulating properties, better surface properties, etc. In fact, mica is an unique mineral which offers the multiple advantage of high-aspect-ratio, high thermal stability and multi-dimensional lateral reinforcement to composite plastic systems. Besides, mica also offers plastic compounders a potential substitute for more expensive fiberglass reinforcements. No other products provide such functional enhancement to a wide range of plastic polymers as superior quality and excellent dimensional stability than mica.

Mica is used in a wide variety of plastic thermosets and elastomers, E.g. Polypropylene (PP), Polythelene (PE), Polycarbonate, Nylon 6, Nylon 66, Polyester (PBT & PET), ABS, Styrene, TOP and Acetal. It is also used in thermoplastic and thermoset resins, namely, Epoxy and Phenolic, to improve its mechanical, thermal and electrical properties.

PP is, by far, the most popular use of mica. Mica-filled PP is chiefly used for reinforcement of RRIM (Reinforced Reaction Injection Molded) automotive parts, such as, fan blades, dashboard panels, floor and grill panels, plastic seats, ignition system parts, air-conditioning heater housing including fascia and fenders fixed next to steel parts while maintaining similar appearances and similar coefficient of thermal expansion. Mica virtually eliminate war page and produce a superior painted surface. It also provides an excellent sound attenuation and barrier properties. Mica replaces asbestos in acoustic compounds that eliminate road and engine noise.


Physical Properties:

Theoretical Formula H2KAI3 (SIO4)3
Specific Gravity 2.8
Hardness (Moh's Scale) 2.5
Refractive Index 1.58
pH (BS 3483) 7.7
pH for distilled water 4.2
Moisture loss @105° C < 0.25%
Oil Absorption(B.S.3483) 50-75 Gms Oil/100 gms. mica
Water soluble(B.S.1765) < 0.5%
Whiteness (NgO) 75-85%
Phericity Factor 0.01
Flammability Non-Combustible
Bulk Density (g/l) 0.22 - 0.29
Surface Area (M2/g) 3.5
Aspect Ratio 20-40
Apparent Density(lbs/cft) 12-14

Chemical Properties:

Silica (SiO2) 48.65%
Alumina (Al2O3) 33.10%
Potassium Oxide (K2O) 9.87%
Ferric Oxide (Fe2O3) 2.48%
Sodium Oxide (Na2O) 0.48%
Titanium Oxide (TiO2) 0.20%
Calcium Oxide (CaO) 0.21%
Magnesia (MgO) 0.38%
Loss of Ignition (H2O) 3.5%
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