What Is Polyacrylonitrile?

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Polyacrylonitrile (PAN), with the chemical formula (C3H3N)n, is a polymer compound obtained by free radical polymerization of the monomer acrylonitrile. The acrylonitrile units in the macromolecular chain are connected in a joint-tail manner.

  • Structural characteristics: PAN is a polymer that is difficult to crystallize. Even random PAN can form a two-dimensional ordered quasi-crystalline structure or a three-dimensional ordered crystalline structure. It is generally believed that PAN molecules have two conformations: (a) helical conformation and (b) planar Z-type conformation.
  • Chemical resistance: Good tolerance to a variety of chemicals (such as acids, alkalis, solvents, etc.).
  • Thermal stability: Has a high heat deformation temperature and is suitable for high temperature environments.
  • Excellent mechanical properties: High strength, good toughness, suitable for making high-strength products.
  • Low flammability: Inherently flame-resistant, making it suitable for applications where fire safety is a concern.
  • Good UV resistance: Shows resistance to the harmful effects of ultraviolet radiation.
  • Good formability: Can be processed by a variety of methods.

PAN fiber, also known as acrylic fiber, exhibits good heat resistance, chemical corrosion resistance, high tensile strength, large elastic modulus, good light resistance and radiation resistance due to the inherent characteristics of PAN. At Alfa Chemistry, we supply high-quality PAN fibers of various specifications.

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