Chapter 5 Flashcards
Chapter 5 - Material Considerations
1: What unit is paper weighed in?
2: What unit is the thickness of board measured in?
3: Can you name the different types of paper?
4: What properties does card have?
1: weight is measured in GSM (grams per square metre or g/m2)
2: thickness measured in microns (one thousandth of a millimetre)
3: Layout paper, Copier Paper, Cartridge Paper, Bleed Proof Paper, Sugar Paper
4: Card is 180 – 300gsm, wide range of colours, finishes. Easy to fold, cut and print on, good for modelling applications.
1: Can you name the properties of corrugated cardboard?
2: What are board sheets, and there properties?
3: What is foam board and the properties of it?
4: What are the properties of Styrofoam and the advantages of using it as a modelling material?
1: Strong but lightweight, two layers of card with a fluted sheet in-between. Thickness ranges from 3mm(3000microns)upwards. Fluted construction is strong, difficult to bend and absorbs knocks. Used in packaging, takeaway boxes.
2: Rigid board, thickness of 1.4mm(1400microns) used for picture framing.
3: Polystyrene foam in between card – most commonly 5mm thick (5000microns), lightweight, used for display boards
4: Expanded polystyrene foam, blue in colour, varies in thickness, water resistant, heat insulator, easy to cut and shape, smooth finish when sanded.
1: Properties of hardwoods are……..
2: Properties of softwoods are……
3: What are the different forms that manufactured boards come in…..
1: Come from broad leafed – deciduous trees (loose leaf over winter) birch, oak. Tree grows slowly, timber is dense, hard and heavy. Used for furniture
2: Come from conifers(evergreens – keep needles all year round) pine, cedar, spruce. Grow fast and wood is light in colour, cheap, used in building trade.
3: Boards are made by gluing wood scraps or layers together. Easy to work with. Forms are, MDF, PLYWOOD, BLOCKBOARD, CHIPBOARD, HARDBOARD.
1: How is metal created?
2: What are the properties of ferrous metals and examples of these?
3: What are the properties of non-ferrous metals and examples of these?
4: What is an alloy, and examples of these?
1: Made by extracting metal ores from rocks in earths crust – mining. Then processed.
2: Contain iron, corrode quickly – unless treated with an appropriate finish, magnetic
Examples: Mild steel, stainless steel, cast iron, wrought iron
3: No Iron, resists corrosion, electric conductor, more expensive than ferrous
Examples: Aluminium, Copper, Tin
4: Metal that is combined with another substance to make it better
Examples: Brass, Bronze, Pewter, Lead, Tin solder
1: How would you describe a polymer?
2: Examples and properties of a manufactured polymer are?
3: Properties and examples of a Thermo Polymer are?
4: Properties and examples of Thermosetting Polymer are?
1: A chain like molecule made up of monomers – naturally occurring polymers are silk, wool and hair
2: Made from petroleum oil – example nylon, rubber, acrylic
3: These soften when heated and can be remoulded when heated up again. Examples of materials with plastic memory – ABS, acrylic, HDPE, PVC, TPE
4: Produce chemical change when heated and cannot be remoulded – example silicone, epoxy resin, polyester resin
1: Properties and examples of natural fibres are…..?
2: What are the properties of synthetic fibres?
3: What is the process of mixing fibres?
4: What is the process of blending fibres?
1: Fibres found in plants and animals, examples – cotton, wool and silk
2: Example – polyester, acrylic, nylon. Come from coal, oil, minerals – non biodegradable,
3: Mixed by adding yarns of different fibres together, add strength, aesthetic properties – might make something elasticated
4: Fibres blown together before spun. Most common blend is polyester cotton – found in shirts, gives crease resistance, toughness – makes it cheaper.
1: What are woven fabrics?
2: What are non-woven fabrics?
3: What is a knitted fabric?
1: Produced on looms, consists of warp yarns and aeft yarns and combined together
2: lack strength, used for decorative things, bonded fabrics – manufactured using pressure and heat/adhesive, teabags an example. Felted fabrics – Applying heat to fabrics, used for decoration, snooker tables an example.
3: Made of rows of interlocking loops known as stitches.
1: Name as many Smart Materials and a property of each of them
The table on the [picture shows the different types of Smart material and the properties.
1: What are the four most common technical textiles with properties
In the table are the four technical textiles - you may have to squint to see the table on a mobile phone
1: Define a composite material.
2: Describe the 4 most common composite materials and a property for each.
1: Bonds different materials together with improved properties.
2: Table will show the composite materials - again squint if on a mobile phone as it is very small
1.On the reverse of the two cards in this section there are 9 different categories of the properties of materials on each of them (18 different properties in total)
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These are what you would use when you are explaining a material to a client or describing it in an exam question
Use both of the cards in this section
Table will be a little blurry on a mobile phone - may need to squint
1.On the reverse of the two cards in this section there are 9 different categories of the properties of materials on each of them (18 different properties in total)
●
These are what you would use when you are explaining a material to a client or describing it in an exam question
Use both of the cards in this section
Table will be a little blurry on a mobile phone - may need to squint
