MICA
Chemical
SiO
2
42-48%
AI
2
O
3
33-37%
K
2
O
09-10%
Fe
2
O
3
1.5-2.8%
CaO + MgO
0.2-48%
LOI
3.5-5.2%
Physical
Specific Gravity
2.82
Refractive Index
1.58
pH(10% slurry)
7.5
Hardness (Moh's scale)
2.5
Oil absorption Gm/100Gm
45 - 70
Particle size 95% below uM
15
TOP CUT uM
40
Bulk Density
375
Mineral used in Plastics
Major Resins
Functions
ABS, fluoroplastics, nylon, PC, TPES, PP, polyolefins, thermosets
Reinforcement; improves dielectric, thermal & mechnacial properties
Examples of Mineral Loadings in Plastics
Plastic/ Product
Loading (Wt.%)
Polyolefin structural foam
10-25%
Phenolics
60%
Epoxy
50%