Core Materials-polymers

Question 1

Polymers come from

Answer 1

Crude oil however this is a finite resource,. Some chemicals from petroleum oil and ome rxmple are epoxy ,nylon

Question 2

Thermoetting

Answer 2

Can be formed once and cannot be reheated

Epoxy resin,

Question 3

Physical and working property’s-epoxy resin

Answer 3

Supply as one resin,one hardener to create an extra strong adhesive

Rigid/durable/expensive/heat resistant for waterproof coating and laminating

Question 4

Thermoforming

Answer 4

Can be heated and 2 formed many times ,

Pet

Question 5

Physical and working property’s-PET

Answer 5

Clear , smooth finish

Light strong tough used for clothing and drink bottles

Question 6

Physical and working property’s-HIPS

Answer 6

Right,cheap ,available in many colours

Food safe but toxic when burnt.cd cases, yogurt pots

Question 7

What are aditives

Answer 7

Chemicals added to the base polymer to improve the life span and achieve chemical/physical properties

Stabilisers/lubricant

Question 8

New material

Answer 8

Been developed for certain properties

Question 9

Smart material

Answer 9

A material with one or more properties that is altered by an external stimulis

Question 10

Physical and working property’s-carbon fibre bike

Answer 10

Fibres are strong/stiff/lightweight

Question 11

Physical and working property’s-teflon pan

Answer 11

Polymer on the surface of pan to ensure non stick

Question 12

Physical and working property’s-shape memory aloy braces

Answer 12

Metal alloy which remembers its shape when heated .

Question 13

Physical and working property’s-thermochomic material bath thermometer

Answer 13

Dyes and pigments react with stimuli heat to change the colour

Question 14

Physical and working property’s-Photochromic material glases

Answer 14

Uv light stimulates the glases with a specials pigment which darkens the glases

Question 15

Physical and working property’s-flourescent material safety vests

Answer 15

Material reflects visible light to make it very ivie

Question 16

Physical and working property’s-photosphorscent material kids glow in dark

Answer 16

Absorbs energy from sun and release slowly over time

Question 17

Physical and working property’s-QTC ipad

Answer 17

Material either conductor or insulator, it’s electrical resistance department on the pressure/stress applied touch sensitive