Materials Flashcards
what is glass made of
mainly sand, SiO2
what are the two types of glass
soda lime glass
borosilicate glass
what is soda lime glass used for
windows, bottles, drinking glasses and vases
what are the properties of soda lime glass
cheap
durable
transparent
brittle
what is borosilicate glass used for
ovenware
laboratory glassware like test tubes, beakers and flasks
what are the properties of glass
transparent
hard but brittle
poor conductors of heat and electricity
what are clay ceramics
bricks, pottery, porcelain and china
what are ceramic materials used to make
wall tiles
bath tubs
sinks
toilets
properties of clay ceramics
opaque
hard and strong, but brittle
good insulators
poor electrical insulators
what is poly(ethene) used to make
carrier bags, plastic bottles, cling film
what is PVC used to make
water pipes, window frames, insulation for electrical wires
what are the properties of polymers
usually strong and chemically unreactive
poor electrical and thermal conductors
can be moulded into complex shapes
what are the magentic metals
iron, nickel and cobalt
what are the properties of metals
strong
hard
shiny
high MP
good electrical and thermal conductors
malleable and ductile
what is a composite material
a mixture of two or more materials combines to produce a material with improved properties
what are examples of man made composites
concrete, steel-reinforced concrete, plywood and safety glass
what are some examples of natural composites
wood and bone
what are composites made of
one material is the reinforcement and the other is the matrix
what does the matrix do
it surrounds and binds together fibres or fragments of the reinforcement
why is a composite material stronger, harder tougher and more lightweight than a single material
it has useful properties from both the materials used to make it
what is glass reinforced plastic used to make
boat hulls and car bodies
what is safety glass used to make
car windscreens as they are hard and rigid and don’t break into small pieces when impacted
what is steel reinforced concrete used to make
construction of buildings as it is strong in tension and compression
what is kevlar used to make
bulletproof vests
what is carbon fibre reinforced polymer used to make
bodies of high performance bikes and racing cars
