Several types of thermoplastic elastomers were described in lecture and the textbook. Briefly describe the two...

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Mechanical Engineering

Several types of thermoplastic elastomers were described inlecture and the textbook. Briefly describe the two phase model thatexplains the behavior of these polymers.

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Thermoplastic elastomers TPE materials sometimes referred to thermoplastic rubbers TPR materials the definition of thermoplastic elastomers is a physical mixing of polymers polymer blend or one type of block copolymers usually consist of plastic and rubber without crosslinking occur which provide both thermoplastic and elastomeric properties and above its melting temperature can be fabrication and recycles to desired shaped as little as 20 seconds Not all amorphous polymers are elastomers but some amorphous polymers are thermoplastics because of an amorphous polymer is classify a thermoplastic or an elastomer depends on its glass transition temperature Tg Above this temperature which a polymer becomes soft and pliable and below which it becomes hard and glassy If an amorphous polymer has a Tg below room temperature it will be an elastomer because it is soft and rubbery at room temperature If an amorphous polymer has a Tg above room temperature it will be a See Answer

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