1.12 Modern Materials

Define modern materials

Materials that are developed through the invention of new improved process

State feature of kevlar

• Aramid fibers with high cut and heat resistant properties

• Good chemical resistance

• High tensile strength

State two uses of kevlar

• Body armour

• Cut-proof gloves and aprons

• Aerospace applications,

• Surfboard components

• Puncture resistant bicycle tryes

State features of precious metal clay (PMC)

• Clay consistency material made up of line metal particles.

• 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

State two uses of precious metal clay (PMC)

• Jewellery

• Decorative items

• Small sculptures

• Fobs

State features of high-density modelling foam

Polyurethane closed-cell foam blocks or sheets

• Lightweight

• Easy to work using traditional woodworking tools

• CNC miller/router

• Sands easily to allow intricate shapes and forms to be created

State two uses of high-density modelling foam

• 3D modelling

- Prototypes

State features of polymorph

Granules that becomes mouldable at about 60°C

• Can be heated in water or with a hair dryer

• Solidifies at room temperature

State two uses of polymorph

• Modelling

• Shaping ergonomic handles

• Prototype mechanical parts