modern materials Flashcards
what are modern materials?
They developed through the invention of new or improved processes, and will continue to evolve as technology advances
-Do not react to external change
what are four examples of modern materials
-Kevlar
-Polymorph
-Precious metal clay
-High density modelling foam
What is Kevlar?
Our mid fires with high cut and heat resistant properties
What are the uses of Kevlar?
body armour
Cut proof gloves and aprons
High performance vehicles for land, sea and air
what are the characteristics of Kevlar?
-Stop a bullet
-Thermal protection up to 120° C
-Lightweight
-Hardwearing
-Strong and stiff
-5 times stronger than steel
-good tensile and torque strength
what is polymorph?
Granules that become multiple at 60° C. They can be heated with a hairdryer or hot water and solidifies at room temperature.
what are the characteristics of polymorph?
Non-toxic and biodegradable
Thermoplastic, modern material
Hard and tough
what are the uses of polymorph?
-Enhanced ergonomic design
-Modelling
-Ergonomic Handles
-Prototype mechanical parts
What is precious metal clay?
A clay consistency made up of fine metal particles. It works like ceramic clay.
what are the characteristics of precious metal clay?
-Easily shaped and formed
-Set hard once the kiln is fired
-Shrink 5 to 15% during Kiln
-Inexpensive, compared to metals like silver
-Accessible with minimal tools
-Can dry out if worked or stored for too long
-Not very strong
what is high density modelling foam?
Polyurethane closed cell blocks or sheets
what are the characteristics of HDMF?
-Lightweight
-Easy to work with using traditional woodworking tools
-CNC Miller/router
-Easily to allow intricate shapes and forms to be created
-Rigid and strong
-Surface detail and fillers
uses of HDMF
-3-D modelling
-Prototypes
