TECHNOLOGICAL MATERIALS AND THEIR EVIRONMENTAL IMPACT

TECHNOLOGICAL MATERIALS AND THEIR EVIRONMENTAL IMPACT

1. TECHNICAL MATERIALS

   • RAW MATERIAL
   • NATURAL MATERIAL
   • PROCESSSED MATERIALS
     • woods
     • metals
     • plastics
     • textiles
     • construction materials

2. CHOOSING MATERIALS

   • Each material has certain properties that make it suited to a certain use.
     • SENSORY PROPERTIES
     • MECHANICAL PROPERTIES
       • hard
         • soft
       • tough
         • brittle
       • elastic
         • plastic
       • malleable
       • ductile

3. WOOD

   • How we obtain wood
     • 1.FELLING
       • DEBARKING
         • TRANSPORT TO THE SAWMILL
           • SAWINF FOR END USE
             • DRYING
               • CLEANING, PLANING AND SANDING
                 • TREATMENTS AND FINISHES
   • TYPES OF WOOD
     • softwoods
     • hardwoods
   • WOOD PRODUCTS
     • plywood
     • chipboard
     • paper
     • cardboard
     • cork

4. METALS

   • NON-FERROUS METALS
     • copper
     • tin
     • aluminium
     • zinc
   • FERROUS METALS
     • iron
     • steel
     • cast iron

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