1, the composition is different: mica powder is a nonmetallic mineral, containing many components, mainly SiO2, and the main component of Yunjin powder is polymethyl methacrylate (PMMA).
2. Different substances: the content of SiO2 in mica powder is 49%, and the content of Al2O3 is 30%. Yunjin powder is a mixture of methyl acrylate (EMA) and methyl methacrylate (MMA).