Page 21 - Handbook of Plastics Technologies

INTRODUCTION TO POLYMERS AND PLASTICS

Dielectric constant @ 60 Hz 3.0 5.5 4.8 2.1 2.6 10.0 2.25 2.3 2.3 4.1 2.2 6.5 2.5 3.4 5.5

Dielectric strength, MV/m 15.7 16.7 12.8 17.7 22.2 10.2 18.9 18.9 27.6 12.2 25.6 18.1 19.7 34.0 25.6

Density. g/cm 3 1.18 1.30 1.19 2.2 2.12 1.77 0.91 0.92 0.95 0.83 1.43 0.90 1.18 1.05 1.4 1.4

Impact strength, J/m 347 210 346 173 187 202 NB NB 373 128 320 43 346 59 181 293

Tensile modulus, GPa 2.3 1.26 .88 .36 1.3 2.5 0.18 0.17 1.10 3.7 1.6 1.24 3.1 2.75

Comparative Properties of Thermoplastics 49,50 Heat deflection Tensile temperature strength, MPa @ 1.82 MPa (°C) 41 99 37.6 68 34 69 17.1 50.9 49.2 90 25.9 102 11.6 43 38.2 74 23.6 42.7 35.8 102 59.4 68 45.1 93 44.4 68 9.6

TABLE 1.2 Material ABS CA CAB PTFE PCTFE PVDF PB LDPE HDPE PMP PI PP PUR PS PVC—rigid PVC—flexible

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