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Plastics (Properties of plastics (Strength, elasticity, rigidity and…
Plastics
Properties of plastics
Strength, elasticity, rigidity and flexibility are characterstics of many plastics
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Low density, impermeability...
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Stone and ceramics
Stone binders
Sand and gravel are used directly to make asphalt and also for binders,
which are used to 'bind' or join other matenals together
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Ceramics
Clay is a fine-grained earth composed of aluminium silicates and other substances We can mould it easily when it's wet.
It's soft, porous, resistant to high temperatures and chemically inertIt has many different. colours; it's abundant in nature and very versatile.
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Textiles and leather
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Synthetic fibres
Long-lasting, resistant, waterproof
Nylon, polyester, rayon and Lycra
Depending on the origin, there are two types of plastics
Natural plastics
They are obtained directly from raw vegetable materials. For example, cellulose or latex, or from animal proteins.
Synthetic plastics
They are made from compounds extracted from petroleum, natural gas and carbon. The majority of plastics belong to this group
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