SC26 Bulk and Surface Properties of Matter Including Nanoparticles
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Define glass ceramics
The majority of glass made is soda-lime glass which is made by heating limestone, sand and sodium carbonate until they melt
Define clay ceramics
It can be hardened by firing at very high temperatures making it ideal as a building material
Define composite materials
Such as fibreglass and concrete, are made of one material (the reinforcement) embedded in another (the matrix/binder)
Define polymerisation
Polymerisation is the reaction of monomer molecules to form long chain polymer molecules
When should you use polymers?
Flexible, easily moulded, less dense, degrade over time Often used when designing products that need to have a low mass
When should you use ceramics?
are insulators of heat/electricity, don’t degrade or corrode, strong and hard wearing Often used based on strength for building materials
When should you use metals?
good conductors, corrode easily bur products made from corrosion resistant metals last ages Often used for all sorts idk
When should you use composites?
different properties based on the matrix and the reinforcement , expensive Often used based on strength for building materials
Properties of glass
transparent, strong, moulded when hot, brittle when thing
Properties of clay
a mineral formed from weathered and decomposed rock that’s soft when it’s dug up, making it easy to mould
Properties of metals
good conductors, high density, malleable, mixed with other elements to form alloys