is a themoplastic, that is, it
is one of a variety of materials that have the
property of becoming hard and rigid when cooled and are moldable
when heated. Polypropylenes soften or fuse when heated and
harden and become rigid again when cooled without undergoing
any appreciable chemical change. Polypropylenes come
in many different chemical formulae (due to additives) which
give differing chemical and mechanical properties, including
adhesion, and in various thicknesses -- both of which affect
coefficient of expansion (COE). Successful long term bonding
of polypropylene to itself and to other substrates, requires
careful preparation and matching of the adhesive being used
with the differing COEs of the substrates involved. BONDiTTM products
are among the few available that can be used to bond polypropylene
to substrates with other COE's for harsh environments and
long term deployment without debonding.
highest recommended product for bonding polypropylenes is
BONDiTTM B-45TH or B-482TH or B-4682,
depending upon the relative need for chemical resistance,
bond strength, impact and vibration resistance, heat resistance
and COE differential.
Our recommendation would change if a fast cure is needed, in which case we
recommend BONDiTTM B-536TH.
Among the other substrates to which polypropylene can be bonded using BONDiTTM products
are: UHMW, Delrin, fluoropolymers, rubber, polyethylene, polyolefin,
polyurethane, silicone, thermoplastics, thermoset, urethane, ceramics, glass,
fiberglass, wood, metals, stone, aggregate and concrete.
To see our chart showing rankings by property, including elongation, of the
various BONDiTTM products click here.
Call or email us for advice on for COE ratings and matching BONDiTTM products
for your application at (707) 284-8808 or firstname.lastname@example.org.