modern material Flashcards
what is graphene
two dimentional layer of carbon. harder than diamond, 300 time stroner than steel and is currently the lightest known material
properties of graphene
light weight
transparent
flexible
tough
very good conductor of electrisity
uses of graphene
solar powered phones and water filtes
what is metal foam
metal foam is produce by injecting gas into metal when its in a molten state
what are the properties of metal foam
very lightweight
high compressive strength
porus
exellent energy absorbing properties
uses of metal foam
soundproofing in cars
crashprotection saften feature
what is titanium
a relativley new metal
what are the properties of titanium
high strength to density ratio
excellent resistance to corrosion
what are the uses of titanium
surgical instements and rplacment body parts such as hip joints
what is liquid crystal display (LCD)
laminate of two layers of glass with a liquid crystal core
what are properties of LCD
ooaque when an electrical current is applied to the liquid crystal core
what are usces of (LCD)
flat screen TVs
what are nano materials
nano materials ar very small: one billionth of a metre in size. they are added to other materials to improve their properties
what are properties of nano materials
can be coated onto glass to make it ‘self cleaning’
can be added to sports equpment to make it lighter and stronger
antibacterial qualities
uses of nano materials
glass
sports equipment
antibacterial socks
what is polytetrafluorthylene (PTFE)
a non stick coating aplied to surfaces to make them slipery
properties of PTFE
Non-stick
uses of PTFE
non stick kitchen utensils and pans
what are corn starch polymers
made from polyactic acid that is found in potatoes corn and maze it is an alternative to oil based polymers
properties of corn starch polymers
reneqble
biodegradable
uses of cornstarch polymers
disposable cutlery and food packaging
what is anodised aluminium
coating applied to aluminium by an electrolytic process
properties of anodise aluminium
harens the surface of aluminium. can be dyed to change the apearance of aluminium
uses of anodised aluminium
sports drinks bottles
components for climing equipment
mountain bikes
what is nickel plating
a coating applied to metal by an elecrolytic process
what are properties of nickel plating
prevents corrosion and wear of the base metal
uses of nickel plating
door handles, belt buckles, nuts and bolts
what is polymer-coated steel
a coating of a thermoforming polumer applied to hot metal
properties of polymer-coated steel
prevents corrosion and alter the appearnace of the base metal
uses of polymer-coated steel
tool handles
whats a smart material
a materia that reacts to the enviromental changes such as heat and light
what are shape memory alloys (SMAs)
a metal that will return to its original shape when placed in hot water or heated
whats a thermmochromatic material
a meterial that reacts to heat for example a baby spoon that changes colour pigment when its to hot
whats a photochromic material
a material that reacts to light for example sunlasses that change pigment based on light intensity
what is polymorth
a plymer that can be shaped and reshaped many times when warmed to 62 c the polymorth becomes flexible and easy to mould into the desired shape it sets as it cools an dbecoms stiff and strong it can be used for making pespoke shapes such as ergonomic handles it is usefulf for making prototype mecanical parts and for making molds
what is qtc
quantum tunneling composite is a flexible polymer with tiny metla particles embeddded into it. when it is squeexed pressure fores the praticles togehte randa currne tof electrons flows between the neighboring particles. th eprocess of eeectron jumping across a gap frome one condtucting material to another is known as quantup tunneling. it is used in micros witches ,outdoor items that may be affected by water and touch sensitive pads
what is glass reinforced plastic
grp is a polyester material reinforced with the addition of glass fibre. it is produced by combining thermos setting polyester resin and glass fibre matting making a storn and lightweigh composite. grp is used in the manufacture of circuit boards, in the marine idustry for boat hulls and in the customkit car market
what is carbon fibre
carbon fibre reinforce platsic is a thermosplastic reainfroced with carbon fibres. it has a high streght to weigh ratio and is very rigid. it is used in aerospace engineering fro fuselae compnetsm formula one vechile chassis and many items of sports equipment
what is a composite material
a material which contains two or more different materiasl that are combined to create a material with iproved properties and functionality
what is gor-tex
gortex is a fabric with breathable yet waterproof properties it allow vapour produced by the wearer to escape yet repels water making it an effective waterproof fabric commonly used for outdoor clothing
what is kevlar
a plastic fibre with high tesile strength. it is heat resistant and extremely hard wearing. it is a flexible and lightweigh synthetic fibre from the class of fibres known as aramids which are modified polyamide fibres. polyamide molecules connect to form long chains. these are aligned parallel to each other isndi the fibres actind as reinforment to give kevlar its strength. kevlar fibres ae so tigtly spun that it’s nearly impossible to seperate them
