PAR Polyarylate films
Polyarylate is a high-performance plastic with significantly higher notched impact strength than other amorphous thermoplastics with comparable heat resistance. This also applies at low temperatures. Depending on the manufacturing structure, the film can be produced with a matt (EM) or glossy (GL) surface.
Mechanical Properties
ARYPHAN ® has a very high tear and tear propagation resistance and is break and splinter resistant. The good mechanical strength is reflected in the high tear resistance and elongation at tear. Compared to polycarbonate films, ARYPHAN ® scores particularly well in terms of low-temperature toughness. Due to the manufacturing process, the mechanical properties are almost identical in the longitudinal and transverse directions. In addition, our ARYPHAN ® is very thermoformable.
Thermal Properties
ARYPHAN ® has a glass transition temperature of up to 193 °C and a heat distortion temperature of up to 175 °C (at 1.8 MPa).
Optical Properties
ARYPHAN ® absorbs light in the near UV range below 360 nm. In the visible light range, transmission increases to values around 90%. Most ARYPHAN ® films have a matt structure on one side and therefore show light refraction.
Electrical Properties
ARYPHAN ® has excellent electrical insulating properties. These are hardly affected by the moisture content of the material due to the very low moisture absorption.
Chemical Properties
ARYPHAN ® is resistant to oils, greases, benzines, aliphatic hydrocarbons and most alcohols. However, ARYPHAN ® is not resistant to chlorinated hydrocarbons, ketones, aromatic solvents and bases. In these substances the film is attacked or dissolves.
Fire Behaviour
ARYPHAN ® is already flame retardant due to its molecular structure. Specially treated grades even meet the VTM-0 standard.
Water Absorption
Due to the low moisture absorption of about 0.2 %, the film remains dimensionally stable, so that the film properties are hardly affected.
Radiation Resistance
ARYPHAN ® absorbs light in the near UV range below 360 nm. The film therefore has inherent UV protection and excellent UVC resistance. UV irradiation shifts the UV absorption further towards 400 nm, so that the inherent UV protection is even enhanced. The film turns a slightly yellowish colour. ARYPHAN ® is also very resistant to beta and gamma radiation.
Further processing of Aryphan
ARYPHAN ® is thermoformable and can be coated using common high-vacuum processes. The film can be easily bonded using selected solvents, solvent-based adhesives and dispersion adhesives as well as the hot melt process.
Stamped parts, tapes and rolls can also be produced well from this polyarylate film.