PP stands for Polypropylene, a type of thermoplastic polymer. This material is produced through the polymerization of propylene monomers; its molecular structure features a linear arrangement and possesses well-ordered crystalline regions. Polypropylene was first industrialized in 1954 and has since become the second most-produced general-purpose plastic globally.
Three Core Characteristics of PP
Thermal Resistance: Capable of withstanding temperatures of up to 100°C without deformation, and can briefly endure temperatures as high as 130°C.
Chemical Stability: Resistant to corrosion by acids and bases, and insoluble in most organic solvents.
Mechanical Strength: Despite having a specific gravity of only 0.9 g/cm³, it exhibits outstanding resistance to flexural fatigue.
Typical Applications of PP Plastic
From food packaging to automotive components, PP plastic is ubiquitous:
Medical Field: Disposable devices such as syringes and IV bottles.
Household Goods: Daily necessities such as microwave-safe food containers and storage bins.
Industrial Sector: Functional components such as chemical pipelines and cable insulation layers.
Environmental Applications: A raw material source for recyclable textile fibers.