How to understand filled PP?

In the field of materials and engineering, "filled PP" refers to the modification of polypropylene (PP) by adding inorganic or organic fillers to its matrix. Polypropylene itself is lightweight and resistant to chemical corrosion, but it has shortcomings such as high shrinkage, brittleness at low temperatures, and poor rigidity. By introducing fillers such as calcium carbonate, talc, or glass fibers, specific physical properties can be improved, and the cost of raw materials can also be reduced.

Common filler types

Typical applications of filled PP

Toilet seat covers: Stiff, resistant to disinfection, and inexpensive

Household appliances: Shell does not warp, resistant to drops and high temperatures

Office supplies: Thin walls do not deform, quiet and wear-resistant