The significant reinforcing effect of talc on plastic products primarily stems from its unique microscopic lamellar structure. The more intact the lamellar structure of processed talc powder remains, the more pronounced its reinforcing effect becomes. A larger aspect ratio (the ratio of the average diameter of lamellar particles to their thickness) can enhance the rigidity, impact strength, bending modulus, and thermal stability of plastic products, such as bumpers and automotive interior parts.

Talc, mica, kaolin, and other silicon (Si)-containing minerals all exhibit infrared and ultraviolet blocking properties, providing significant insulation and aging resistance effects in plastic products.