Take pearlescent pigments as an example, pearlescent pigments are a class of pigments with pearl luster, which are deposited on the substrate (generally natural mica, synthetic mica, glass sheet and other sheet-like materials) above a layer or alternately deposited multiple layers of metal oxides or non-metallic oxides and formed a flat sandwich body with a structure similar to sandwich. Due to the difference in refractive index between the substrate and the oxide deposited on its surface and each oxide, when the light shines on the surface of the pearlescent pigment, the incident light will be refracted and reflected at the interface of each layer of the pearlescent pigment, and the color of the pearlescent pigment that people see is the result of the superposition of light after multiple refractions and reflections of the light, that is, the interference phenomenon of light.

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.

Conclusion

4. Add Mica Powder Gradually sprinkle the mica powder into the mixed epoxy resin. A little goes a long way, so start with a small amount and add more as necessary. Stir well to completely integrate the mica powder into the resin.

An authoritative mica supplier should have a transparent supply chain and adherence to international standards. Certifications from recognized bodies such as ISO or equivalent environmental certifications speak volumes about a supplier's commitment to quality and ethical practices. Often, these suppliers participate in industry forums or contribute to sector advancements, further solidifying their authoritative stance. Partnerships with well-known brands or contributions to notable projects can also serve as testament to their authority and reliability in the mica supply industry.

One of the most well-known applications of mica is in the cosmetics industry. Mica is prized for its ability to create shimmer and shine in products such as eyeshadows, blushes, and highlighters. The mineral enhances the aesthetic appeal of cosmetics, making it a sought-after ingredient. As the beauty industry continues to grow globally, the demand for mica, particularly from China, has surged. However, this has raised significant concerns regarding the ethical aspects of mica sourcing, especially when it comes to ensuring that mica is mined responsibly and sustainably.