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Questions and Answers
What is specific gravity?
What is specific gravity?
- The resistance of rubber to scraping or rubbing
- The stress required for producing an elongation percentage in rubber
- The force required to tear apart rubber
- The ratio of density of a substance to a standard (correct)
Which rubber is highly resistant to temperature extremes, UV rays, ozone, and fire?
Which rubber is highly resistant to temperature extremes, UV rays, ozone, and fire?
- Nitrile rubber
- Natural rubber
- Silicone rubber (correct)
- Neoprene rubber
What is compression set?
What is compression set?
- The percentage increase in length of a rubber sample with a tensile force
- The extent to which an elastomer fails to return to its original thickness (correct)
- The resistance of an elastomer to cuts or nicks when tension is applied
- The ability of rubber to return to its original size and shape after deformation
Which rubber is primarily used for outdoor applications?
Which rubber is primarily used for outdoor applications?
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What is resilience?
What is resilience?
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Which rubber is hard, durable, and widely used for tires?
Which rubber is hard, durable, and widely used for tires?
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Study Notes
- Specific gravity is the ratio of density of a substance to a standard.
- Abrasion resistance is the resistance of rubber to scraping or rubbing.
- Tensile strength is the force required to tear apart rubber.
- Tensile modulus is the stress required for producing an elongation percentage in rubber.
- Elongation is the percentage increase in length of a rubber sample with a tensile force.
- Resilience is the ability of rubber to return to its original size and shape after deformation.
- Compression set is the extent to which an elastomer fails to return to its original thickness.
- Tear resistance is the resistance of an elastomer to cuts or nicks when tension is applied.
- Abrasion resistance is the resistance of rubber to abrasion by scraping or rubbing.
- Specific gravity is the ratio of a material's weight to the weight of an equal volume of water.
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