14 High Performance Thermoplastic Resins and Their Composites TABLE 4.Thermal Properties of High-Performance Neat Thermoplastic Resins Resin Morphology Tg (C) Tm (C) Tp (C) HDT (C)1 Ts (C) Reference Victrex PEEK 143 343 370-400 152 1 143 334 350-380 160 250 21 145 335 200 58 143 334 22,59 334 370-400 250 60 144 340 12 144 340 380 2 Victrex PEK C 165 365 165 250 162 373 385-410 186 260 2 PEKK 156 338 12 156 360-370 6 250 156 338 370 2 Ultrapek O U 173 374 64 Kadel 63 340 160 23 Ryton PPS 85 285 330 135 24 C 85 285 25-30,65 90 290 315-340 115 200-240 1 85 285 343 2 Ryton PAS-2 A 215 315-343 28-30 215 325-330 198 1 218 66 222 343 215 330 2 Ryton S PPSS 218 343 J-2 156 290-305 154 1 160 290-305 138 32 156 300 Torlon 274 33 278 3 275 330-400 274 200 220 22 288 350 2 K-Polymer 251 340-400 250 360 35 251 360 232 34 250 350 N-Polymer 385-390 36,67,68 A 340.370 370 37,38 360 350-400 1 A 350 375 2 Eymyd U-25 A 249 343 39,69 Eymyd U-35 432 。。0 427 69 Eymvd U.55 A 288 (continued)