Trade Secrets: How Does Ensuring a Clean Surface Lead To a Strong Epoxy Bond?

Why is Cleanliness So Crucial When Applying Epoxy?

When you’re preparing a surface for an epoxy application, cleanliness isn’t just important, it’s absolutely crucial. You see, if your surface isn’t clean before you begin, you’re setting yourself up for a tougher job down the line. Why? Because contamination can actually reduce the adhesive power of epoxy. It’s like trying to stick a stamp on a dusty envelope – it just won’t hold.

What’s the Secret to a Strong and Durable Epoxy Bond?

If you want your epoxy bond to be as strong and durable as possible, there are three things your surface must be: clean, dry, and thoroughly abraded. The strength of the bond relies heavily on the ability of the epoxy to mechanically ‘key’ into the surface. It’s like a puzzle piece finding its perfect match – when it fits just right, the bond is unbreakable.

How Can You Guard Against Contamination?

Contamination is the enemy of a good epoxy bond. But don’t worry, there are a few simple precautions you can take to guard against it. This section discusses what you should watch out for, including some things you might not expect, like your own body oils, sanding dust, organic solvents, compressed air, heaters, zinc stearate, and amine blush.

How Do You Know When Your Surface is Clean Enough?

So, you’ve cleaned and you think you’re ready to go. But how can you be sure? Here’s a tip: wash it with water. If the water channels or beads in certain areas then you need to get back to cleaning – you’re not done yet! However, if it sheets off the surface evenly then the part is ‘clean’ and ready for use.

What Can You Do to Avoid Surface Contamination in the Future?

Why not keep a list of these causes of contamination to hand when preparing your next surface? And if you’re still after more, head over to WEST SYSTEM® Epoxy where you can find plenty more surface preparation techniques.

Remember, a clean surface is the key to a strong and durable epoxy bond. So, always ensure your surface is clean before applying epoxy.