dry-powder fire extinguishers, as a thin coating on rubber surfaces to overcome tackiness
and sticking, In exterior house paints reduces running and sagging, and improves
weatherability. The addition of mica to all types of sealers for porous surfaces
(such as wallboard, masonry, and concrete blocks) greatly reduces penetration and improves holdout. The inclusion of mica in road and highway paints improves wearability, gives good adhesion, and reduces flaking and cracking, also used to coat wallpaper because it imparts an attractive silky or pearly luster, used predominantly in paint, plastics and rubber.
We supply (dry mica powder and wet mica powder).
mica powder
Wet mica powder physical and chemical indicators:
|
Screen margin (%) |
Sand Content (%) |
Bulk density (g/cm3) |
Water content (%) |
Loss on Ignition (%) |
Whiteness |
Radius-thickness ratio |
125um (120 mesh) |
250um <0.1 125um |
<3.0 |
≤1.0 |
≤0.3 |
≤1.0 |
≤4.3 |
>70 |
90um (160 mesh) |
180um< 0.190um |
<5.0 |
≤1.0 |
≤0.25 |
|||
75um (200 mesh) |
150um< 0.1 75um |
<5.0 |
≤0.6 |
≤0.23 |
|||
45um (325mesh) |
112um< 0.145um |
<5.0 |
≤0.5 |
||||
38um (400mesh) |
75um< 0.1 38um |
<5.0 |
≤0.5 |
Dry mica powder physical and chemical indicators:
|
Screen margin (%) |
Fe contents |
Sand Content (%) |
Bulk density (g/cm3) |
Water content (%) |
Whiteness |
Radius-thickness ratio |
900um (20 mesh) |
≤0.5 |
≤400 |
≤0.5 |
≤3.0 |
≤1.0 |
>60 |
>60 |
450um(40 mesh) |
≤0.5 |
≤400 |
≤1.0 |
≤3.0 |
|||
300um(60 mesh) |
≤0.5 |
≤800 |
≤1.0 |
≤3.0 |
|||
150um(100mesh) |
≤0.5 |
≤800 |
≤1.0 |
≤0.25 |
|||
75um (200mesh) |
≤1.0 |
≤800 |
≤1.0 |
≤0.25 |
|||
45um(325mesh) |
≤2.0 |
≤400 |
≤1.0 |
≤0.22 |
|||
35um(400mesh) |
≤5.0 |
≤400 |
≤0.5 |
≤0.22 |