4. Durability These pigments exhibit excellent stability and resistance to environmental factors such as heat, light, and moisture. This durability ensures that products containing mica-based pigments maintain their aesthetic appeal over time.
X { Y2-3 [Z4O10] (OH)2 }
X represents large interlayer cations, such as K+, Na+, Ca2+, Ba2+, Rb+, Cs+, etc. Y represents octahedral cations, such as Al3+, Fe2+, Mg2+, Cr3+, Ti4+, Fe3+, etc. Z is mainly Si4+ and Al3+; The ideal ratio of the additional anion (OH)- to (O)2- is 2:10, and (OH)- can be replaced by F- and Cl-. Most mica contain 4% to 5% water. Therefore, although they may be called mica, the chemical composition of different mica may be very different, for the purpose of research, we collectively refer to the minerals with this type of characteristics as mica group minerals.
Moreover, modern formulations of these paints often have excellent coverage and durability. This means fewer coats may be required for application, further enhancing their cost-effectiveness and reducing the time spent on maintenance.
Natural mica powder and synthetic mica powder also have great differences in electrical insulation, mechanical properties, chemical stability, application range and cost. Natural mica powder has good electrical insulation, but the volume resistivity is lower than that of synthetic mica. Synthetic mica powder has better electrical insulation properties, high volume resistivity and stable dielectric constant, and is suitable for high performance electrical insulation materials. The hardness of natural mica powder is relatively low (2-3), and it has good elasticity and peeling property. The hardness of synthetic mica powder is higher (between 3 and 4), and the tensile strength and compressive strength are better than that of natural mica powder. Natural mica powder is stable in acid-base solution, but it is easy to decompose at high temperature. Synthetic mica powder is stable to acid and base at room temperature, but will be slowly corroded by sulfuric acid above 300℃. Better thermal stability, not easy to release gas. Natural mica powder is widely used in electrical appliances, welding rods, rubber, plastics, paper making, paint and other fields. Synthetic mica powder is mainly used in high-end electrical insulation materials, aviation, aerospace, national defense industry and other high-tech fields. Because synthetic mica powder needs to be produced through complex chemical processes, its production cost is usually higher than that of natural mica powder. Therefore, in the market, the price of synthetic mica powder is often higher than that of natural mica powder. However, with the continuous progress of production technology and the gradual emergence of scale effects, the price of synthetic mica powder is expected to gradually decrease.
In the electronics sector, mica raw plays a crucial role due to its excellent dielectric properties. Mica is widely used as an insulating material in electrical capacitors, transformers, and other electronic components, where it helps to prevent electrical leakage and provide stability. The demand for mica in this field is expected to grow as global technological advancements continue to drive the development of more efficient and compact electronic devices. Furthermore, mica is an important component in the manufacturing of insulators and tubing used in high-voltage applications, where its thermal stability is indispensable.
Natural high quality Muscovite:feel fine, soft lubrication.
Synthetic 120 mesh :large particle size, with pearl shining effect.
What are the uses of mica