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PLASTICS - Coggle Diagram
PLASTICS
What are plastics?
Plastics play a big part in our lives. Plastics are materials formed by polymers. The polymers in plastics are
made from long chains of carbon atoms.
Origin of plastics
Synthetic plastics
Are made from compounds extracted from
petroleum, natural gas and carbon .The mayority of plastics belong to theirs group.
Natural plastics
Are obtained directly from raw vegetable matenals
— for example, cellulose or latex, or from animal proteins.
Transformation
It's called polymeration
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During the manufacturing process, we can add matenals such as flbreglass, textile fibres, paper, silica and sawsduct to reduce production costs, and to develop certain characteristics.
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We can incorporate chemrcal additives to increase flexliblity and to strength then the polymers, and we can add pigments to give colour to the plastics.
Properties of plastics
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Strength, elasticity, rigidity and flexibility are characteristics of many (or other materials) plastics, although they vary from one type to another
However, there are other properties that are common to the mayority of decompose by a natural,
• mechanical: malleabrlity, ductility, mechanical resrstance
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• other properties: low density, impermeability
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