12 - Modern materials - Classification

Question 1

Kevlar

Answer 1

Aramid fibres (strong, synthetic) with high cut and heat resistance

Used in body armour, cut-proof gloves and aprons, puncture-resistant tyres

Question 2

Precious Metal Clay (PMC)

Answer 2

Clay consistency material, made up of fine metal particles. Easily mouldable. Sets as a hard metal when fired in a kiln or flame, clay binder burns off.

Inexpensive compared to solid metals, like silver

Used in jewellery, small sculptures

Question 3

High-density modelling foam

Answer 3

Polyurethane closed-cell foam blocks or sheets

Lightweight, easy to work with using workshop tools. Sands easily to allow intricate shapes and models to be created.

3D modelling, prototyping

Question 4

Polymorph

Answer 4

Granules that become mouldable at 60*C

Can be heated in warm water or with a hair dryer. Solid at room temperature

Used for modelling, shaping ergonomics handles, prototyping