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Glass - Coggle Diagram
Glass
Types of glass
Soda Glass
This commercial glass and is the most commonly used. Has medium to low thermal shock in other words it will shatter going from cold to hot or the other way.
Window panes, glassware, drink bottles
Borosilicate (Pyrex)
Commonly know as Pyrex. The chemical composition of Soda Glass is altered by the addition of oxides which improve thermal conductivity.
Cookware, science equipment such as beakers, oven doors and anywhere where heat/cold are crucial to the design performance.
Toughened
Is heated up to the point of melting then blasted with cold air. This makes the outside is in compression and the slower cool interior is in tension. When it is impacted it shatters into little pieces rather than sharp shards.
Side windows of cars, shower glass or design contexts where there is a potential for impact.
Laminated
It is layers of glass and plastic sheets between them. When impacted the glass fragments are held in place. This prevents cracks from growing
Bullet proof glass, windscreens, bank teller windows,
Glass Fibre
Is very long strands of glass. Sometimes these are woven into mats and used as glass fibre reinforced plastic when combined with a resin (polymer).
fishing poles, car panels, swimming pools.
Characteristics of glass
Transparency, allows light to pass through it
Colour, colour is deigned in my adding chemicals
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Brittleness, it has a low impact strength and thus will shatter easily (low toughness).
Hardness, high hardness and wont scratch readily.
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Non-porous, thus will hold liquids or stop moisture seeping from outside.
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Glass is mostly Composed from silca sand (silicon dioxide) together with limestone (calcium carbonate) and Soda Ash (sodium carbonate) and small quantities of a few other chemicals.
It takes 1700 around Celsuis to produce glass from sand, so scrap glass is added.