|
The synthetic mica in nature is synthetic gold fluorine mica. It replace the phlogopite’s –OH with the most electronegative F- and structural formula becomes KMg3(AlSi3O10)F2. It has general characteristics of both muscovite and phlogopite. They are lamellar, good picking flakes between layers, good insulativity and high corrosion resistance. Beside these common characteristics, it has excellent high temperature resistance, better whiteness, wider photic zone, better evenness, remarkable high temperature insulativity, no impurities, no radioactivity and rare heavy metal content, which the natural mica don’t have. Therefore, synthetic mica owns better characteristics than natural mica does and is more widely used in such applications as pearlescent pigment, cosmetic industry, isolated material and etc…
However, there is a big problem in synthetic mica. By contrast with natural mica flakes, synthetic mica are harder in rigidity, which causes the difficulties in synthetic further processing, especially in the following industries including pearlescent pigment, cosmetic industry, isolated material. These characters lead to processed synthetic mica powder’s bigness in radius-thickness ratio and bulk density while poorness at adhesive force and lightness in colour, even no interference effect. The problem is vivid in fine particle size products. The problem is caused by that Mg replaces Al and F- replaces –OH at the structure. Moreover, the high-melting-point impurities produced during the production of synthetic mica crystal will closely adhere among layers, especially for those of highly invasion with mica.
Kuncai have resolved the problem with many-year research. We create the unique technical process to make the synthetic mica flakes of little impurities, excellent in picking, a good elasticity, and moderate rigidity. With the independent intellectual property rights of patent (patent no. ZL200910058415.3), Kuncai can manufacture the synthetic mica of big radius-thickness ratio, narrow particle range, good whiteness, transparency, evenness, smoothness. With unique coated process, these synthetic flakes can be utilized for pearlescent pigment of the good whiteness (for silver white series), high brightness and color saturation and pure and beautiful color. Kuncai build the largest production line in the world to bear the annual production capacity of 10,000 ton of synthetic flakes, 8,000 ton of synthetic mica powder and 6,000 ton of pearlescent pigment.
1.The Contrast Between Synthetic & Natural Mica
2、Synthetic Mica Block
SEM Photo (Synthetic Mica Powder & Synthetic Pearl)
3、The Contrast Table between Synthetic Fluorine Phlogopite and Natural Moscovite
|
Character |
Synthetic Fluorine Phlogopite |
Natural Moscovite |
Character |
Synthetic Fluorine Phlogopite |
Natural Moscovite |
|
Chemical Composition Space Group Density(g/cm3) Optical Character Refractive Index B a Optical Angle ( 2V,Degree) Lattice Constants a b c β Photic Zone(μ) Rigidity Damply Concussive Method,Second Flexibility(Winding MethodPass Φ7~11mm,%) Compression Strength (kg/cm3)Vertical Cleavage Plane Compression Strength(kg/cm3) Parallel Cleavage Plane |
KMg3 (Alsi3O10)F2 Cah6-C2/C 2.88 Biaxial.(1) 1.548 1.522 3~14 5.299 9.188 10.135 9955 0.3~4.5 194 Slightly Hard 36 Common 5200 5140 |
KAl2(AlSi3 O10)(OH)3 Cah6-C2/C 2.76~3.10 . Biaxial.(1) 1.582~1.615 1.552~1.572 45 5.18 9.02 20.04 95’’30’ 0.3~2.0 174 Softer 59 Good 5600~7100 5040 |
aximum Temperature High-temperature Gas Release 600 ( Compare) 900 Coefficient of Thermal Expansion20~800 mm/mm/Parallel Cleavage Plane Thermal ConductivityW/M,700K Parallel Cleavage Plane Vertical Cleavage Plane Specific HeatCal/g. Dielectric Coefficient1MC Dielectric Loss Tangent1MC Volume Resistivitycm Surface Resistivity Breakdown Voltage StrengthKV/mm10 Thick 50Thick |
1100 ~1/100 ~1/1000 8.8*10-6
5.7 0.8 0.2 5.7 2*10-6 2.7*1016 10*1010 192 94 |
600 1 1 8.8*10-6
-- 0.75 0.2 6.6~6.8 2~10*10-6 3.8*1016 9*1010 220~225 84~87 |
|
Whiteness |
≥95 |
50~75 |
Heavy Metal |
PPb PPb Level Below The Detection Limit |
PPb PPb Level |
|
Radioactivity |
Null |
Have |
|
|
| |