1.6 Materials Flashcards
Properties of bleed proof paper?
smooth, prevents marker bleeds
Uses of bleed proof paper?
presentation drawings
Properties of cartridge paper?
good quality white paper often with texture
- different weights
uses of cartridge paper?
paints, markers and drawings
Properties of grid paper?
paper printed with different grids as guidelines
uses of grid paper?
quick model drawings and working drawings
Properties of layout paper?
thin translucent and lightweight
can be used with markers and takes colour
uses of layout paper?
initial quick sketching and drawing
properties of tracing paper?
thin and transparent
Uses of tracing paper?
tracing copies of drawings
What is paper always less then?
200gsm
What are boards always more then?
200gsm, and 2,5mm thick
Properties of corrugated card?
Strong, lightweight
made of two or more layers
fluted middle section for good insulating
get different thickness
Uses of corrugated card?
packaging such as pizza boxes, large boxes for heavy items
Properties of duplex card?
thin board, one side suitable for painting
Uses of duplex card?
food packaging
Properties of Foil-lined board?
board covered on one side with aluminium foil
good insulator
Uses of foil lined board?
takeaway or ready meal packaging
Properties of foam core board?
two pieces with core of foam to increase thickness
thick, very lightweight
Uses of foam core board?
model making ( architectural models)
Properties of inkjet card?
treated for use in inkjet printers
Uses of inkjet card?
printing in inkjet printers
Properties of solid white board?
top quality cardboard, smooth and white
good for painting on
Uses of solid white board?
book covers
What two groups can timber be categorised into?
soft and hardwoods
What is a hard wood?
wood from deciduous tree
What is a softwood?
wood from evergreen tree
Name 5 hardwoods?
ash beech mahogany oak balsa
Properties of ash?
tough, flexible, wide grained, finishes well
Uses of ash?
sports equipment, ladders
Properties of beech?
hard, strong, close grain, prone to wrapping and splitting
Uses of beech?
furniture
kids toys
workshop tool handles
bench tops
Properties of mahogany?
strong and durable
available in wide planks
fairly easy to work
Uses of mahogany?
good quality furniture, panelling and venders
Properties of oak?
hard, tough, durable, open grain
high standard finish
Uses of oak?
timber framed buildings, flooring, high quality furniture
Properties of balsa?
strong, durable, lightweight, easy to work
Uses of balsa?
model making, floats, rafts
Name 3 softwoods?
larch
pine
spruce
Properties of larch?
reddish striking grain tough but easy to work prone to spliting natural resistant to rot
Uses of larch?
fencing, fence posts, decking
Properties of pine?
straight grained
yellow colour
soft and easy to work
can be knotty
Uses of pine?
interior joinery and furniture
window frames
Properties of spruce?
creamy white
lightweight
easy to work with small knots
Uses of spruce?
bedroom furniture
stringed instruments
What are the two categories for manufactured boards?
laminated boards and compressed boards
What are laminated boards?
glueing large sheets or vaneers together
What is a compressed board?
glueing particles, chips or flakes together under pressure
What are some advantages of manufactured boards?
- large sheets
- consistent throughout board
- more stable then timber
- make sue of low grade timber
Give three examples of manufactured boards?
MDF, plywood, chipboard
Properties of MDF?
smooth surface, compressed fibres of wood combined with a synthetic adhesive
strong
Uses of MDF?
flat pack furniture, decretive mouldings and shop interiors
Properties of Plywood?
laminated board made of several veneers of wood glued together
consistent strength due to odd layers
stiff
Uses of Plywood?
laminated flooring, roofing, furniture
Properties of chipboard?
made of large flakes or chips of timber glued together under pressure
Uses of chipboard?
kitchen work surface, kitchen cupboards, flooring
What two groups can metals be grouped into?
ferrous and non-ferrous metals
What are ferrous metals?
metals that contain iron
What are non-ferrous metals?
metals that do not contain iron
Name 3 ferrous metals?
cast iron
low carbon steel
high carbon steel
Properties of cast iron?
hard surface, brittle soft core
strong compressive strength
cheap
Uses of cast iron?
vices, car break discs, cylinder blocks
Properties of low carbon steel?
good tensile strength, tough, malleable
poor resistance to corrosion
Uses of Low carbon steel?
car bodies, nuts, bolts and screws
Properties of High carbon steel?
Hard but brittle
less tough and malleable then medium carbon steel
Uses of High carbon steel?
screw drivers, chisels, taps and dies
What is good about non- ferrous metals?
malleable properties and resistance to corrosion
Properties of Aluminium?
Lightweight, soft, ductile, malleable
good conductor of electricity
corrosion resistant
Properties of Copper?
extremely ductile and malleable
excellent conductor of heat and electricity
easily soldered and corrosion resistant
Uses of aluminium?
aircraft bodies, cans, cooking pans
Uses of copper?
plumbing fitting, hot water tanks
Properties of Zinc?
weak in pure state
high level of corrosion resistance
low melting points
easily worked
Uses of zinc?
as a galvanised coating, corrugated roofing
Properties of Tin?
soft ductile and malleable
low melting point
excellent corrosion resistance
uses of tin?
coating on food and drinks can
What is an alloy?
a material that is produced by combining two or more elements together to produce a new material with refined properties
Name three alloys?
brass- non- ferrous alloy
stainless steel ferrous alloy
duralumin
Properties of brass alloy?
strong and ductile
casts well
corrosion resistant
conductor of heat and electricity
Uses of brass alloy?
casting, taps and wood screws
properties of stainless steel alloy?
hard and tough
excellent corrosion resistance
Uses of stainless steel alloy?
sinks, cutlery, surgical equipment
Properties of duralumin?
strong, soft and malleable
excellent corrosion resistance
light weight
Uses of duralumin?
aircraft structure, fuel tanks
What is a thermoforming polymer?
polymers that can be softened by heating, shaped and set over and over again
name 6 thermoforming polymers?
acrylic, HIPS, HDPE, PP, PVC, PET
What are thermosetting polymers?
polymers that can only be shaped and formed by heat once
Name 5 thermosetting polymers
Epoxy resin, MF, PF, polyester resin, UF
What are additives?
properties of polymers that can be further enhanced with additives
What are fibres?
very fine hair like threads and are the basic building blocks of fabrics
What are natural fibres?
fibres from plant and animal sources
What are synthetic fibres?
fibres manufactured from oil based chemicals
Name three natural fibres?
cotton, wool, silk
name 3 synthetic fibres?
polyester, polamide, elastane
What are blended or mixed fibres?
fabrics that contain two or more fibrest
What are woven fabrics?
produced by interlacing two sets of yarns at right angles to each other on a machine called a loom
What is a warp yarn?
runs length of fabric
What is the weft yarn?
run across the width of fabric
What is a selvedge?
at the edge where the weft yarn turns around a finished edge
What is the bias of a fabric?
the interlacing of the warp and weft yarn making the fabric strong and stable
Features of a plain weave fabric?
simple + cheap
firm strong hard wearing fabric
What are non- woven fabrics?
made directly from fibres without being woven or knitted
What are felted fabrics?
made from wool fibres and use the natural felting ability of the wool to cause the fibres to matt together using heat, mechanical action and moisture
What are bonded fabrics?
made from webs of fibres which are held together in various ways: special adhesive
thermal bonding
stitching with a thread
needle punching
Uses of bonded fabrics?
disposable items, interfacing and interlining
Uses of felted fabrics?
hats, slippers, toys
What are knitted fabrics
yarns are looped together to make looser more flexible fabrics
What are the two types of knitted fabrics?
weft knit and warp knit
Uses weft knit fabrics?
socks, jumper, t-shirt
Uses of warp knit fabrics?
swimwear, underwear, net curtains
What is fusibility?
how easily a material’s state can be altered to become a liquid
What is electrical conductivity?
how easy electrical energy can pass through a material
What is thermal conductivity?
how easily heat energy can pass through a material
what is Resistance to moisture?
a materials ability to prevent liquid and moisture permeating the surface
What is absorbency?
a materials ability to soak up and retain liquid, heat or light
What is strength?
a materials ability to withstand a constant force without breaking
What is tension?
force pulling outwards
What is compression?
force pushing inwards
What is shear force?
Two opposite forces
What is torsion?
twisting of an object
What is bending?
tension and compression
What is density?
materials mass per unit volume
What is toughness?
materials ability to withstand impact from a dynamic force
What is malleability?
ability to be permanently deformed or shaped by impact rolling or pressing without it bending
What is ductility?
materials ability to be drawn or pulled in to a long length or wire without breaking
What is elasticity?
a measurement of a materials ability to stretch under force and return to its original shape without deformation when the force is removed