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PLASTICS - Coggle Diagram
PLASTICS
However, there are other properties that are common to the maionty of plastics
mec hanica
malleabrlity, ductility, mechanical resrstance
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other properties
low density, tmpermeabihty
Formation technique
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. Lamination
Thermoplastic produced by the extrusion method ls passed through a
senes of hot cylinders to produce sheets of varying thtckness
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Stone and ceramics
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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
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Ma king ceramics
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We clean the clay to remove traces of vegetable
matter, then apply a breakdown process using rollers.
We add water, anti-grease agents, fluxes and colouring.
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Glass
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Sh aping techniques
We make glass by mixing sand, soda (which acts as a flux) and
limestone.
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Lam ination
We pass the soft matenal through a system of rollers The roflers can be
smooth, or engraved to create a design on the glass
We can recycle plastics. There are three recycling processes; chemical,
mechantcal and energetrc
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En ergetic recycling.
. We can incinerate plastics and the energy that
is produced is used tn industry, for heating or producing electnctty.
Joining plastic
When plastics have been formed, shaped and finished, we can loin
pieces to each other
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Te xtiles and leather
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Synthetic fibres
Synthetic fibres such as nylon, polyester, rayon and Lycra' are plasucs.
They are long-lasting, resistant and waterproof.
Depending on their origin, we can describe plastics as natural or
syntheuc
Natural plastics
s are obtained directly from raw vegetable matenals
— for example, cellulose or latex, or from animal proteins.
Sy nthetic plastics
s are made from compounds extracted from
petroleum, natural gas and carbon
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Elastomers
Made by vulcanisationi mixing sulphur and rubber, and heating to( 60'C.
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