Epoxy Basics: How Can You Make a Joint with Two-Step Epoxy Bonding?

When you’re knee-deep in a project, the bonding stage is where things start to get exciting. It’s like seeing all the puzzle pieces come together. But to make that happen, you need two key ingredients: a clean and well-prepped surface, and the right kind of glue. Now, there’s this method called ‘two-step bonding’.

Why is two-step bonding a game-changer?

It’s like the secret sauce for making sure the epoxy gets deep into the bonding surface, kicking out the risk of ‘resin-starved joints’, which can weaken your project. This technique is particularly beneficial because it promotes maximum epoxy penetration into the bonding surface.

How does two-step epoxy bonding work?

First, you apply the epoxy in a step known as ‘wetting out’. It’s like giving your bonding surface a good soak of epoxy, prepping it for the next step. In this process, you apply a neat epoxy resin/hardener mixture (without fillers) to the surfaces that need to be joined. Use a disposable brush to wet out small or tight areas. For larger areas, use a foam roller or a plastic spreader.

Then, you apply a thickened epoxy, which is a mix of resin, hardener, and some added epoxy filler. This ensures your bond is as strong as it can be. Apply the thickened epoxy to one of the bonding surfaces. This way, when you join the surfaces together, a small amount of epoxy will squeeze out.

Visual aid to help show what two step bonding method looks like

What makes two-step bonding versatile?

The great thing about the two-step bonding technique is its versatility. It’s like a one-size-fits-all method for most types of joints and materials. And if you’re a visual learner, there are plenty of videos out there that can guide you through the process.

But what makes this method even more impressive is that it creates a chemical (primary) bond rather than a mechanical (secondary) one. In other words, the epoxy you apply to the partially cured epoxy creates a single, fused layer – and that’s a big part of the reason the resulting joint is so effective.

The strength of two-step bonding

So, there you have it. Two-step bonding might sound technical, but it’s a simple and effective method that can significantly improve the strength of your project. For more insights, check out our blog post on the subject. Remember, the strength of a project is rooted in the strength of its bonds. Happy bonding!

Remember, the success of your project depends not only on the bonding technique but also on the proper preparation of the surfaces and the correct application of the epoxy. So, take your time, follow the steps carefully, and you’ll be rewarded with a strong and durable bond that will last for years to come.

For additional help contact our team at: techinfo@wessex-resins.com

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