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Epoxy
Adhesive
Epoxy is a
relatively common synthetic resin based adhesive which bonds to many
materials both porous and nonporous. It is waterproof and resistant to
acid and most solvents. It is typically available as a 2-part liquid,
gel, putty, or paste.
Epoxy
Curing
Epoxy adhesives
harden as a result of heat and a chemical reaction between the two
parts of the mixture. They do not usually shrink as curing does not
rely on evaporation.
Epoxy has very
high wet and dry strengths. Setting time will vary based on the epoxy
type and can be from very fast (minutes) to very long (weeks). Some
varieties of epoxy contain metal powder such as aluminum, steel,
titanium, or brass to function as a filler.
Most putty
formulas are non-shrinking and dry to a range of colors including
green, blue, gray, and black. Liquid, paste, and gel formulas typically
dry clear to tan in color. The liquids, pastes, and gels can generally
be cleaned and thinned using acetone, and are non-shrinking only if you
do not use thinner.
Epoxy
Types
Epoxy adhesives
are common enough that most major adhesive producers manufacture epoxy
adhesives. Examples include brands such as:
1. "J-B Weld,"
"J-B Kwick," "Marineweld," and "Industro Weld" from J-B Weld Company.
2. "Probond
Regular Epoxy" and "Elmer's Superfast Epoxy" from Elmer's Products Inc.
3. "Devcon
5-Minute Thick Gel Epoxy" and "Devcon Titanium 5 Epoxy" from Chemical
Development Corporation.
4. "Scotch-Weld
Epoxy Adhesive 2158" from 3M.
5. "Fixmaster 4
Miute Epoxy" from Loctite Corporation.
There are many
different epoxy adhesives currently available from these, and many
other, manufacturers. Epoxies are generally easy to find at almost any
hardware or department store.
Conclusion
Because there are
so many epoxies available (with different cure times, etc), you should
consider the application at hand whenever choosing an epoxy adhesive.
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