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Table of contents

What defines an elastomer?

Hysteresis

Traditional Definition of Elastomer

What IS an Elastomer

Show Shrink Wrap Tubing Demo

What is Tg ?

Stress Relaxation & Creep

Compression Set & Hardness Window

Hysteresis and Temperature

Importance of Elastomer Crystallinity

WLF Concept

Time-Temperature Superposition

WLF Experimental

WLF equation

Size Distribution and Mobility of the Holes

Time/temp superposition Elastomeric Region

Cohesive Energy

Cohesive Energy Density

Cohesive Energy II

Cohesive Energy III

Effects of CED

Simplest Elastomer

Random walk model of chains.

Statistical Links

Statistical Links II

Entropic nature of the retractive force

Stress-Strain Curve for Freely Jointed Chain

Rubber Elasticity in Tension

Strain-induced crystallinity Effects

Preventing Crystallization I

Preventing Crystallization II

General Purpose Rubbers

Solvent Resistant Rubbers

Heat Resistant Rubbers

Application to Rollers

Author:Roger Faulkner

E-mail:roger@rethinktechnologies.com

Homepage:http://www.rethinktechnologies.com/

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