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Rubber to Metal Bonding Terms
–
Chemicals which are added to rubbers to accelerate the rate of vulcanisation.
Rubber without accelerators takes 20-30 times longer to cure.
– Chemicals added
to rubber to activate curing.
– The propensity of
rubber to bond to a contact surface.
– Material that can
be used to adhere or stick one surface to another.
– Joining of identical
or different types of material by means of an adhesive, creating a positive-substance
bond throughout the entire surface of the joint.
– Unit load,
applied in tension, compression, flexure, peel, impact, cleavage or
shear, required to break an adhesive assembly with failure occurring
in or near the plane of the bond. Bond strength is measured in pounds
per square inch (psi).
– Force necessary
to actuate sliding. A high break-out value indicates the development of
adhesion.
– A uniform layer of
chemical primers or adhesives that are used to produce chemical bonding
between rubber and a substrate.
– The adhesion of
a vulcanized rubber material to a contact surface through the use of suitable
contact cements.
– Pressure
applied to the assembly to achieve a bond in contact adhesives.
– Also known as “vulcanization,”
this is the permanent change that the rubber undergoes during molding.
– Any material that
when stretched more than twice its length is able to return to its original
shape.
– The tendency
of some materials to crack as a result of repeated bending or stressing
at the same point.
– Crude rubber
obtained from organic sources, such as vegetables.
– Also referred to as
“Buna-N,” it is the most commonly used elastomer for O-rings,
due to its wide temperature range, resistance to petroleum fluids and
good physical properties.
– General term used
to describe all rubbers and plastics. Polymer is also the chemical term
that refers to all organic materials that are formed from chains of repeated
chemical units.
– Chemical material that
improves the bond of the sealant to the substrate.
– Also called "permanent
set," it is the degree to which a rubber does not fully recover to
its original shape after it has been deformed for a long period of time.
– Any surface to which
a coating or sealant is applied.
– A bond formed
between an elastomer to a primed surface through the used of heat and
pressure. The elastomer is vulcanized at the same time as the bond.
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