Chemistry of some important thermoplastic & thermoset Resins:-

                                                                              Bakelite

Properties:-

(1) Phenol resins are hard, rigid and strong materials

(2) They have excellent heat and moisture resistance.

(3) They have good chemical resistance

(4) They have good abrasion resistance

(5) They have electrical insulation characteristics

(6) They are usually dark coloured

(7) Lower molecular weight grades have excellent bonding strength and adhesive properties.

Applications:-

(1) It is used for making electric insulator parts like switches, plugs, switch boards etc.

(2) For making moulded articles like telephone parts cabinet of radio and television

(3) As an anion exchanger in water purification by ion exchange method in boilers

(4) As an adhesive (binder) for grinding wheels etc.,

(5) In paints and varnishes

(6) For making bearings used in propeller shafts, paper industry and rolling mills