When it comes to connecting parts or materials, there’s a more convenient way to handle the task than by relying on machinery or techniques like soldering or welding – and it’s none other than applying adhesives. Two of the most reliable and common options are epoxy and regular glue (e.g. hot glue, PVA, super glue). But which to buy? Is epoxy better than glue? That’s what we’re about to discuss in this text.
What is Epoxy?
A two-part adhesive made from a resin and a hardener, the high-strength epoxy glue creates a durable bond thanks to these two components that end up creating a chemical reaction when combined. The notable change happens in the state of the product; from a liquid or paste form, it turns into a solid.
As there are two components, this is a type of adhesive you get to mix in a specific ratio to be able to activate the adhesive properties. Although they’re not all the same, some epoxies need a considerable time to fully cure, which can be from a few hours to a few days. Provided with the right conditions, like proper airflow and higher temperature, the epoxy would be able to dry and cure faster.
In general, the epoxy glue is known for the exceptional strength, as it forms rigid and durable bonds perfect for structural applications, though there are some stronger than others and the choice comes down to what it is you need the epoxy for. That’s why there are different types available, from the standard and water-based, to the UV-cured, structural, flexible, conductive and high-temperature epoxy.
It’s also an adhesive known for the resistance to harsh conditions, as it’s waterproof, heat resistant, and chemical-resistant. Furthermore, the epoxy adhesives are very versatile as they can be used with a range of materials, ranging from metals and glass, to plastics, wood and ceramics. As such, they’re crucial in various settings, whether it’s automotive repairs, construction, marine use or electronics, woodworking or resin-based 3D printing, these are adhesives you can swear by for perfect bonding results.
All in all, epoxies are great for long-term projects, like when you’re repairing furniture, or adding flooring. Lastly, the ability to turn into a solid form that’s highly durable makes them suitable for finishing up when you’ve got issues like gaps or uneven surfaces that could do with filling up.
What is Glue?
Unlike the epoxy adhesive with its two components, the regular types of glue are one-part adhesives which is why they also tend to be cheaper. As such, they’re generally easier to apply since you don’t have to fret about the right amount to create a perfect mix. They’re also easier when it comes to drying and curing, so you won’t have to fret when it comes to these aspects either.
If you’re in need of a simple kind of adhesive that makes for quick use right out of the tube, and dries up fast, the white glue, PVA, or hot glue are some alternatives you can rely on. In the case of super glue, you can expect full curing results within seconds or minutes, ideal for projects in which time is of the essence. Although they’re not as strong as the epoxies, these glues tend to create reliable and flexible bond strength, ranging from light to heavier-duty bonds.
On the bad side, their resistance isn’t that good to begin with, as most of them tend to be sensitive to exposure to heat or moisture, which can weaken their effectiveness particularly in environments with harsher conditions. Other differences include the mess the regular glue creates, plus the materials it’s suitable for, like the lightweight paper, fabric, cardboard, wood, and some types of plastic, as opposed to the heavier materials the epoxy is fit for.
When it comes to projects you can use these glues for, there are versatile glue options so you can choose something specific for the type of material you’re working with. For example, there are wood glues, as much as there are fabric glues, making it easy to find something fit for the material you have at hand. Basically, these are adhesives you can rely on for general woodworking, as well as paper repairs, textile use, crafts and hobbies.
Some examples here would be decoupage and scrapbooking. But, there are plenty more everyday uses you could find for these glues, as the white glue (also known as school glue) can be used for plant repair, as much as for splinter removal from fingers, fixing a loose screw, filling up cracks and holes in furniture or walls, stiffening fabric, and many more.
You can let your creativity take the lead considering these are adhesives you can think of as multipurpose. Some can even serve for repairing jewellery, or making some craft decorations you can proudly showcase in your hallway or living room. The possibilities are truly endless!