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Films and Sheets – Plastchem FZC

Films and Sheets

Chemical stabilizers are commonly used in films and sheets to enhance their durability and protect them from degradation caused by various factors such as heat, light, oxygen, and processing conditions. Here are some examples of chemical stabilizers used in films and sheets:

  • UV Stabilizers: These stabilizers protect films and sheets from degradation caused by ultraviolet (UV) radiation. UV stabilizers can absorb or scatter UV light, preventing it from reaching the polymer matrix and causing degradation. Examples of UV stabilizers include benzophenones, benzotriazoles, and hindered amine light stabilizers (HALS).
  • Antioxidants: Antioxidants are used to prevent the degradation of films and sheets caused by oxidation, which can lead to discoloration, embrittlement, and loss of mechanical properties. Common antioxidants used in polymers include hindered phenols, phosphites, and thioesters.
  • Heat Stabilizers: Heat stabilizers are employed to protect films and sheets from thermal degradation during processing or at elevated temperatures. They can help maintain the physical and mechanical properties of the material. Examples of heat stabilizers include metal soaps (e.g., calcium stearate, zinc stearate), organotin compounds, and phosphites.
  • Processing Stabilizers: These stabilizers are added to films and sheets to protect them during processing, especially at high temperatures. They help prevent degradation and maintain the desired properties of the material during manufacturing processes such as extrusion or molding. Processing stabilizers can include lubricants, acid scavengers, and viscosity modifiers.
  • Antistatic Agents: Antistatic agents are used to reduce or eliminate static electricity buildup on the surface of films and sheets. They help prevent dust attraction, enhance handling properties, and minimize the risk of electrostatic discharge. Common antistatic agents include quaternary ammonium compounds, long-chain fatty acid derivatives, and conductive polymers.

It’s important to note that the specific choice of chemical stabilizers depends on the polymer type, intended application, processing conditions, and desired performance requirements. Different combinations of stabilizers may be used to achieve the desired stability and longevity of films and sheets.