compression set

compression set

The permanent deformation of an elastomeric sealant, compressed so far that its internal structure is partially or completely destroyed and it no longer will assume its previous shape.
References in periodicals archive ?
Moreover, white silica-filled compounds, at least if used in AEM or ACM compounds, suffer from worse compression set due to certain interactions of the curing site with the hydroxyl groups on the surface of the silica.
New approaches for the processing and crosslinking of special elastomers
Material failure: Causes are compression set, thermal and chemical degradation, incorrect hardness, or wrong choice of elastomer.
Repairing water leaks: Part II of III
A low hardness thermoplastic elastomer is said to exhibit better performance than that of thermoplastic vulcanizate widely used in weatherseals by providing higher tear strength, lower compression set and cost benefits.
Low hardness TPEs
While standard compression-set tests of Septon V9000 yield results equivalent to standard olefinic TPVs, long-term (1000-hr) compression set is said to be much better for the new SBCs.
Crosslinkable SBCs resist heat & oil swell
Molded parts made from this silicone are said to be resistant to heat and coolant, and exhibit low compression set even under permanent stress.
Liquid silicone developed for radiator gaskets
These TPVs improve compression set, oil resistance, and adhesion of conventional TPVs and are aimed at overmolded high-performance grips, seals, and diaphragms.
'Super-TPVs': the new challenge to rubber: a new category of TPEs combines engineering thermoplastics with vulcanized silicone or acrylate rubbers to provide new levels of heat and oil resistance. Conventional TPVs are also being upgraded with styrenic rubbers in place of olefinic types
Compression set at low temperature measures the ability of a robber material to recover after being compressed at a sub-zero temperature.
Compression set testing
The materials have around 20% compression set after 22 hr at 120 C vs.
Novel TPE aimed at automotive market
These compounds are said to be characterized by high tensile and tear strength, good compression set and good heat aging properties.
High strength silicone
It does not scorch, is non-staining, and is well suited to low-density foams where low compression set is desired.
California to ban two flame retardants
DOTG does a good job of speeding up the cure rate and it has an added benefit in that it significantly improves the compression set.
Formulation suggestions for replacing DOTG in AEM compounds
According to Novamont, vertical compression set of the foam is 10%, compressive creep is less than 15%.
Starch polymer appears in corrugated foam sheet
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