
34. Chemical Component table of work materials Production data Mechanical Property of Standard test block Chemical Composition (%) Tensile strength Heat treatment of Hardness Others standard test block remaining Casted remaining Casted remaining remaining remaining ■Kinds of thermosetting plastics and symbols Name Symbol Name Symbol Alkyd resin Phenol resin Allyl resin Unsaturated polyester resin Urea resin Silicone resin Melamine resin Polyurethane Epoxy resin ・Thermosetting resin : Heated at 80 °C, it becomes sticky paste with fluidity. Then it is injected into the mold under pressure. Once hardened, the plastics does not get soft owing to polymer processing. Information Technical Technical-110