3..1.3 Developments in new materials

Question 1

modern materials

Answer 1

graphene
metal foam
titanium

Question 2

graphene

Answer 2

transparent
one layer
conduct heat and electricity

use: solar cells

Question 3

metal foam

Answer 3

lightweight, strong under compression

use: crash protection on cars

Question 4

titanium

Answer 4

high strength to weight ratio
withstand high temp, corrosion resistant and unreactive

use: aircraft, prosthetic limbs

Question 5

smart materials

Answer 5

shape memory alloys (revert back to shape)
polymorph (plastic shaped and reshaped many times)
thermochromic (change to temp)
photochromic (changed to UV levels, pigments degrade over time)

Question 6

kevlar

Answer 6

fibres woven tightly to resist penetration.
fibres absorb and dissipate impact.
aramid molecules arranged parallel inside for reinforcement

Question 7

gortex

Answer 7

uses lamination so it is breathable but waterproof

Question 8

microfibres

Answer 8

less than one denier thick

Question 9

micro encapsulation

Answer 9

adding a bonding over tiny particles, these capsules rupture over time
-anti microbials
-medicine released

Question 10

fire resistant fabrics

Answer 10

Nomex
fibres thicken when exposed to heat to absorb heat energy without melting

Question 11

conductive fabrics

Answer 11

coated or blended with conductive metals to send electrical impulses thorough without resistance