PTFE （聚四氟乙烯）俗稱塑料王、F4、或鐵氟龍。采用懸浮聚四氟乙烯樹脂經模壓成型制得可制成板材、車削膜、管。可壓制推制成型。可與石墨等混合制成板、棒、盤根、繩、生料帶。                                                                                                                                                                                                                                                                                                            特性：