Polymer Type Thermoplastic Advantages Cheap, good chemical resistance. High impact strength at low temperatures. Excellent electrical properties. Can be processed by all conventional methods. Can be transparent in thin film form. Disadvantages Low strength, stiffness and maximum operating temperature. Flammable. Poor UV resistance. High gas permeability ( particularly CO2 ). Susceptible to environmental stress cracking. Typical Properties Property Value Density (g/cm3) 0.92 Surface Hardness SD48 Tensile Strength (MPa) 10 Flexural Modulus (GPa) 0.25 Notched Izod (kJ/m) 1.06+ Linear Expansion (/°C x 10-5) 20 Elongation at Break (%) 400 Strain at Yield (%) 19 Max. Operating Temp. (°C) 50 Water Absorption (%) 0.01 Oxygen Index (%) 17 Flammability UL94 HB Volume Resistivity (log ohm.cm) 16 Dielectric Strength (MV/m) 27 Dissipation Factor 1kHz 0.0003 Dielectric Constant 1kHz 2.3 HDT @ 0.45 MPa (°C) 50 HDT @ 1.80 MPa (°C) 35 Material. Drying hrs @ (°C) NA Melting Temp. Range (°C) 220 - 260 Mould Shrinkage (%) 3 Mould Temp. Range (°C) 20 - 40
Applications Chemically resistant fittings, bowls, lids, gaskets, toys, containers, packaging film, film liners, squeeze bottles. Heat-seal films for metal laminates. Pipe, cable covering, core in UHF cables