Materials and Components

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  • Materials and Components
    • Define these terms:
      • Strength:
        • Ability to withstand forces without breaking.
      • Hardness:
        • Ability to withstand scratches rubbing or denting.
      • Toughness:
        • Opposite to brittle, can absorb impacts.
      • Impact resistance:
        • Withstand sudden force without cracking.
      • Flexibility:
        • Bend without breaking
      • Strength to weight ratio:
        • High - Strong but lightweight
      • Aesthetic properties
        • The way a material looks
    • What are the four types of paper and their uses?
      • Cartridge paper- textured, sketching/art. Layout paper - translucent, general work. Bleed-proof Paper - Markers don't bleed. Tracing paper - translucent, used for copying.
    • What are the six types of board and their uses?
      • Solid white board - bleached white, for printing on.
      • Mount Board - mount presentations.
      • Corrugated board - Protect products.
      • Duplex board - Diff. colour/texture on each side, food packaging.
      • Grey board - rigid, cover with paper, board games.
      • Foam board - Stiff and light, making models.
    • What is good about corrugated board?
      • It is strong for its weight.
    • What is the unit for paper weight measurement?
      • Gsm, grams per square meter.
    • Name 5 types of thermosplastics and their uses and qualities:
      • Acetate - translucent, sustainable (wood fibres), where product needs to be seen.
      • High impact polystyrene, rigid, variety of colours/thicknesses, vacuum forming.
      • Polypropylene, strong, flexible, 'living hinge' - lunchboxes.
      • Polyvinyl chloride - cheap, rigid, brittle, blister packs.
      • Acrylic - Stiff, brittle, high impact resistance, aeroplane windows and fishtanks
    • What re the two types of plastics used for modelling?
      • Corrugated plastic sheet.
    • What is the method for vacuum forming?
      • 1) Mould is put onto vacuum bed. 2) Thermoplastic is clamped over bed and heated until soft. 3) bed is lifted up to plastic 4) Air is sucked from under plastic, creating vacuum.
    • How do you bend plastic using a line bender?
      • 1) Draw a line on thermoplastic 2) Rest line over element 3) Push plastic over jug to bend it.
    • What do smart materials do?
      • Smart materials change their properties to react to heat, light etc.
    • **Needs pg. 28 and 29 adding**
    • What is laminating? What is it good for?
      • Sandwiching a document between two layers of plastic, make it last longer and look nicer.
    • What is embossing and what is it good for?
      • creating an impression in the back of a material to leave a raised impression on the surface. Draws attention and provides texture.
    • What is foil application and what is it used for?
      • Transferring foil with heat onto an area, makes it stand out, look fancy, make a product attractive, but its expensive.
    • What is varnishing for?
      • Give the impression of quality and provide protection.
    • What is a composite material? Give 3 examples:
      • A material made of two or more different materials. Polythene coated paper (paper cups), Foam-board (Polystyrene and card), Aluminium lined packaging.
    • What are the 4 methods of sticking card and paper?
      • Glue sticks, rubber based cement, glue pens, aerosols.
    • What are the 3 methods of sticking wood together?
      • PVA (polyvinyl acetate), Balsa cement, glue guns.
    • How do you stick acrylic together?
      • Acrylic cement
    • What types of glues will stick most materials?
      • Epoxy resin, superglue.
    • Name 5 permanent fixings:
      • Sticky pads, adhesive tapes, eyelets, plastic rivets, Press-fit fasteners.
    • Name 3 temporary fixings:
      • Velcro, bluetac, press stud, split pins.

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