Elastic Modulus Of Rubber

Diamond has a high young s modulus of 1050 1200 gpa as it is highly rigid.

Elastic modulus of rubber. In an application that requires a rubber seal to be stretched into place a low modulus compound might be considered to make assembly easier. While modulus and durometer are somewhat related there can be a pretty large variance in modulus values between two compounds of the same durometer. Young s modulus is also known as tensile modulus elastic modulus and modulus of elasticity measure of elasticity. There are different types depending on functional groups in the structure and curing mechanisms.

Rubber elasticity refers to a property of crosslinked rubber. Where stress is the force causing the deformation divided by the area to which the force is applied and strain is the ratio of the change in some length parameter caused by the deformation to the original value of the length parameter. It is used to describe the elastic properties of objects like wires rods or columns when they are stretched or compressed. You will see this on a physical property data sheet written something like modulus 100 elongation.

Key properties include thermal stability chemical stability electrical insulation and low toxicity. Modulus of elasticity is a measure of stiffness of an elastic material. Gruand méca sarl cy for his redaction. Main applications are flexible seals o rings etc.

Rubber has a low young s modulus of 0 01 to 0 1 gpa as it is highly elastic. It defines the relationship between stress force per unit area and strain proportional deformation in a material in the linear elasticity regime of a uniaxial deformation. This can be repeated many times with no apparent degradation to the rubber. It can be stretched by up to a factor of 10 from its original length and when released returns very nearly to its original length.

It s the measure of the stiffness of the material. The most facile way to quantify the orientation is from the optical birefringence defined as the difference in refractive indices for two perpendicular directions. The modulus of elasticity also known as the elastic modulus the tensile modulus or young s modulus defined as the slope of its stress strain curve in the elastic deformation region. Silicones are polymers with a si o si backbone.

Carbyne has the highest known young s modulus of 32100 gpa meaning it is the least elastic or most rigid material known at the moment. Thomas young his british fellow countryman will leave his name associated to this linear behavior of many materials. Young s modulus is named after the 19th century british scientist thomas young. Ut tensio sic vis latin sentence from robert hooke 1678 means such extension such strength proportionality rule.

Rubber elasticity arises from the orientation of chain segments and the degree of this orientation underlies the mechanical properties. Tensile modulus or young s modulus alt. Young modulus for rubber. Elongation is proportional to applied strength.

Elastomers have played a key role in the development of new technologies in the. Rubber is a member of a larger class of materials called elastomers and it is difficult to overestimate their economic and technological importance.