UNIT 4: PLASTIC,TEXTILES,STONE AND CERAMICS

Unit Summary

• Plastics:  They are formed of polymers.

                        Properties: malleable, ductile, mechanically resistant, thermal and electrical insulators.

                                         Can be recycled chemically or physically.

                       Classification: Thermoplastics.-PVC, polystyrene, polythene, polypropylene, polymethyl         methacrylate, Teflon, cellophane, nylon.

                                            Thermostable plastics.-Polyurethane, phenolic resins, melamine, polyester resins. 

                                            Elastomers.-Natural rubber, synthetic rubber, neoprene.

                       Production Techniques:Forming, shaping, finishing, joining.

• Textiles:  Natural Fibres: Vegetable, animal and mineral origin.

                        Synthetic Fibres: Nylon, polyester, rayon, Lycra.

• Stone and Ceramics: Stone: Marble, granite, slate, sand, gravel.

                                         Binders:Plaster, cement, mortar, concrete.

                                         Ceramics 

                                         Glass