How are epoxy adhesives formulated?

What is a curing process and how does it work?

When deciding whether or not an epoxy adhesive will be effective in the job, it makes sense to look at its compounds. Epoxies are formed by combining the two starting compounds, which are the resin and the hardener. Epoxy is an epoxide, which means that it’s more reactive to other chemicals. The complementary chemical is a hardening agent which works to turn it into a strong adhesive. This is known as the curing process.

Epoxy adhesives’ properties depend upon the chemistry. Chemical and heat resistance, adhesion and resistance to water as well as good mechanical and electrical insulating properties are important factors.

Epoxy adhesives are offered as either one component or a system involving two components. Epoxy adhesives made up of one component are cured at around 250 to 300°F. The epoxies can even be used as firm and reliable alternatives to welding.

One component systems require only a moderate heat for the curing process and the speed is even faster than two component systems.

Epoxy adhesives are used in high strength joints

Two component epoxy systems are different because catalyzation takes place at milder temperatures. Acceleration is possible by heat. Two component systems can bond most surfaces. If you have any jobs, commercial or DIY, and require a reliable metal bonding adhesive, then has a full range to suit all requirements.

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A two component adhesive, after the mixing process, will have a shelf life. The life varies with the usage temperature, as an increase acts as an accelerator, thus reducing the life of the adhesive.

According to Azo Materials, certain nanosilica filled epoxy adhesives can result in an enhanced dimensional stability and lower shrinkage.

Epoxy adhesives, both two component and one component, are used in all joints that require very high strength or load resistance. The key advantage of the one component epoxy adhesive, as opposed to the two component adhesive, is mainly the speed of cure, as well as its resistance.

Epoxy adhesives are used in a range of industries, from manufacturing processes in the aviation industry to the manufacture of tools and even binding of wind turbine blades.
Depending on the fillers, epoxy adhesives are also used as electrical conductors which are applied in microelectronics, as well as thermal conductors.

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