12. Modern materials Flashcards
1
Q
What are modern materials?
A
- materials that are developed through the invention of new or improved processes
- not smart materials
2
Q
What are modern materials?
(examples)
A
- kevlar
- precious metal clay (PMC)
- high-density modelling foam
- polymorph
3
Q
What are the properties of kevlar?
A
- aramid fibres with high cut- and heat-resistant properties
4
Q
What are the uses of kevlar?
A
- body armour
- cut-proof gloves and aprons
- aerospace applications
- surfboard components
- puncture resistant bicycle tyres
5
Q
What are the properties of PMC?
A
- clay consistency material made up of fine metal particles
- works like ceramic clay
- easily mouldable
- easy to shape and form
- sets hard once fired with a kiln or butane torch
- inexpensive compared to solid metals such as silver
6
Q
What are the uses of PMC?
A
- jewellery
- decorative items
- small sculptures
- fobs
7
Q
What are the properties of high-density modelling foam?
A
- polyurethane closed cell foam blocks or sheets
- lightweight
- easy to work using traditional woodworking tools, CNC miller/router
- sands easily to allow for intricate shapes and forms to be created
8
Q
What are the uses of high-density modelling foam?
A
- 3D modelling
- prototypes
9
Q
What are the properties of polymorph?
A
- granules that become mouldable at about 60 degrees
- can be heated in water or with a hair dryer
- solidifies at room temp
- also available in liquid form
- liquid at room temp and solidifies at 2 degrees
10
Q
What are the uses of polymorph?
A
- modelling
- shaping ergonomic handles
- prototype mechanical parts
