Question: What Are Called Elastomers?

What are elastomers Class 11?

Elastomers.

The materials for which strain produced is much larger than the stress applied, with in the limit of elasticity are called elastomers, e.g., rubber, the elastic tissue of aorta, the large vessel carrying blood from heart.

etc.

Elastomers have no plastic range..

Do elastomers melt?

Elastomer properties include resilience — some elastomeric materials can be stretched repeatedly to twice their length and return to their original shape. They provide flexibility from their polymer composition, above glass transition temperature (Tg) for end-use requirements, and don’t melt in high temperatures.

Are elastomers plastics?

Elastomers, commonly known as rubber, differ from plastics in the fact they have a great capacity for large elastic deformation under an applied stress. … Deformation is accommodated in the elastomer material through the molecular structure and arrangement of the polymer chain.

Is rubber a ductile material?

RUBBER IS DUCTILE DUE TO ITS SPECIAL PROPERTY OF ELASTICITY. AND ACCORDING TO YOUNG’S MODULUS, THE ELASTIC PROPERTY OF RUBBER IS HIGH.. BUT AFTER REACHING THE FRACTURE POINT THE ELASTIC LIMIT OF RUBBER ENDS.

Which material can be used to manufacture elastomers?

The elastomeric ethylene-propylene-diene monomer (EPDM) rubbers, made by copolymerization of ethylene, propylene, and a diene using Ziegler catalysts, are particularly resistant to ozone.

What are elastomers examples?

Elastomers are loosely cross-linked polymers. … Examples of elastomers include natural rubbers, styrene-butadiene block copolymers, polyisoprene, polybutadiene, ethylene propylene rubber, ethylene propylene diene rubber, silicone elastomers, fluoroelastomers, polyurethane elastomers, and nitrile rubbers.

What are the types of elastomers?

Four common elastomers are cis-polyisoprene (natural rubber, NR), cis-polybutadiene (butadiene rubber, BR), styrene-butadiene rubber (SBR), and ethylene-propylene monomer (EPM).

Why rubbers are called elastomers?

Rubbers are stretched on application of force and regain original state after the force is removed. Therefore, these are called elastomers.

What are examples of thermoplastics?

A thermoplastic is any plastic material which melts into a soft, pliable form above a certain temperature and solidifies upon cooling. … Common examples of thermoplastics include acrylic, polyester, polypropylene, polystyrene, nylon and Teflon.

What is elastomer used for?

Primary uses for elastomer are seals, molded flexible parts and adhesives and used in vehicle manufacturing, food production, scientific applications and chemical processes. Elastomer is available in different grades, depending on their application.

What is the difference between elastomer and rubber?

Rubber and elastomer are words commonly used to mean any material with rubber-like properties. Elastomer is shorthand for elastic polymer. Elastomers are viscoelastic: sticky, very elastic polymers (plastics). … Rubber is frequently used to indicate elastomers that must be vulcanized or cured to be useful.

What is the difference between elastomer and silicone?

Is a polymer that displays elastic properties. A part from Latex (the natural product), most elastomeric products fall into the category of “Synthetic Elastomer” the use of the word elastomer is used interchangeably with rubber nevertheless, Silicone is more correctly an “elastomer”.