Bakelite and phenolic resin(酚醛树脂) OH H Formaldehyde OH CH2 OH polymerization CHA ig 18.9 the molecular network of bakelite pl shown in two dimensions Phenol-formaldehyde The actual structure resin(Bakelite) projects in all three dimensions. The first Polymers win in World War ll handset telephones were made of bakelite Synthetic rubber, radar, tank and tent Polymer and environmentBakelite and phenolic resin (酚醛树脂) Polymers win in World War II Synthetic rubber, radar, tank and tent Polymer and environment Fig 18.9 the molecular network of bakelite shown in two dimensions. The actual structure projects in all three dimensions. The first handset telephones were made of bakelite OH CH2 CH2 CH2 OH OH CH2 CH2 OH OH CH2 CH2 OH CH2 OH CH2 OH OH C H H O OH Formaldehyde phenol polymerization Phenol-formaldehyde resin (Bakelite)