As a technical term, elastomers are used frequently in the field of rubber synthesis and processing. But when people understand or use it, they often question whether it and the rubber belong to the same concept. Is there a difference between the two and whether it can be exchanged and replaced? To do this, let’s take a look at how these are defined in some authoritative classics.
(1) Elastomer
Definition 1:
“When it is subjected to deformation force at room temperature, it will change greatly in both shape and size. When the external force is removed, it can largely (obviously) restore the original macromolecular material”
Definition 2:
“General term for rubber-like elastic polymer materials (including rubber and rubber-like materials) at room temperature, including various natural rubbers and synthetic rubbers.”
It is understood from the above two definitions that although their origins are different, the specific terms used are different, but the general meaning is the same.
First, the elastomers are all polymer materials;
Second, deformation occurs under the action of external force, and the amount of deformation is large;
Third, once the external force is removed, most of the deformation disappears, and only a small part or even a very small part of the deformation is permanently retained, so-called permanent deformation.
Therefore, the deformation and recovery characteristics of the elastomer are very different from other materials. Firstly, when subjected to an external force, deformation can be immediately formed. It seems that no effort is required, that is, it can be allowed to be placed; once the external force is removed, there is a strong tendency to recover. . This property of elastomers is beyond the reach of other materials.