Bullet points on uses and properties on different types of rubber

1. Geometrical and Mechanical-Engineering
Drawing – CAPE Unit 2
Rubber
Natural Rubber
Consistsof isoprene plusotherorganiccompoundspluswater.Harvestedaslatex fromcertaintrees
during‘tapping’.Rubberhasalarge stretchration,highresilience and extremelywaterproof.
Properties
Hightensile strength, resistanttofatigue fromwear,exhibitshysteresis,straincrystalizes,susceptibleto
vulcanizationandsensitive toozone cracking,doesn’tdissolve easily,lessthermallystable thanother
typesandincompatible withpetroleumproducts.
Synthetic Rubber
Properties
Elastomer(highelasticlimits), betterresistancetoabrasionthannatural rubber,superiorresistanceto
heatand the effectsof aging.Flame resistant,electrical insulator,remainsflexible atlow temperatures,
resistanttogrease and oil
Uses
Printingtextile,seals,gaskets,clothing,tires,sneakersolesandsolidrocketfuel
Silicone Rubber
Properties
Elastomer,polymercontainingsilicone withCarbon,HydrogenandOxygen,non-reactive,stable,
resistanttoextreme environmentsandtemperaturesbetween -55to300⁰ C, highelongation,cyclic
flexing,tearstrength,thermal conductivityandfire resistancehighatextreme temperatures.
Uses
Usedwhenretentionof initialshape isnecessary,underthermal stressof sub-zerotemperatures,
automotive applications,cooking,baking,undergarments,electronics