Gli adesivi strutturali funzionano davvero?
On one side, we have rivets, bolts, and welds. These are methods that clearly show how they work—mechanical technologies that we understand very well and have used for a long time. There’s no need for someone to explain how to tighten a bolt or how this mechanism holds two metal pieces together. In fact, we're used to seeing ships, buildings, and even bridges held together by massive bolts, and we take for granted that metals can be joined using welding. Because of all these reasons, we’re naturally inclined toward mechanical fastening solutions, which are known and "simple." Yet, despite this, we know that in many industrial sectors, for various needs, the same rivets, bolts, and welds have often been replaced by structural adhesives. These glues have become the default solution for bonding metals, plastics, and many other materials because of the different advantages they offer, such as increased lightness, instant bonding, no pre-drilling, clean aesthetics, and more. These points could also apply to high-performance tapes, not just structural adhesives. Still, the question often remains: Do structural adhesives really work? Are they strong enough to replace rivets, bolts, and welds in your company? Let's find out. We’ve already touched on what structural adhesives are, so here we’ll be brief: in short, they are extremely strong glues. If we try to define them qualitatively, a structural adhesive is a glue that creates a bond at least as strong as the materials it is joining. But when it comes to strength, performance, and safety, qualitative descriptions may not be enough. That’s why, in the United States, adhesives with a shear strength of over 7 megapascals are considered structural, while in Europe, the standard is higher—there, an adhesive is called structural only if its shear strength exceeds 10 megapascals. The typical structural adhesive is liquid and thermosetting, but there are several variations. It should also be noted that these aren’t new products. In fact, they are well-established and standardized. For example, 3M introduced the first neoprene-based contact adhesive in 1942, and in the 1960s, it launched the first flexible epoxy structural adhesive, as well as the first liquid spray adhesive. So, structural adhesives are a proven and regulated reality—let’s see just how effective they really are. To understand how and how well structural adhesives work, there’s no better way than to compare
The most important metric used to express the strength of a fastening method is the already-mentioned shear strength. Which solution—flow welding, spot welding, rivets, bolts, or structural adhesives—provides the highest resistance? Well, at the bottom of the list, with the worst results, are the famous rivets. They are cheap, quick to use, but they don't stand out for design flexibility or aesthetic appeal. Then come bolts, which, like rivets, can certainly provide high strength at the point where they are installed, but cannot work across the rest of the surface. Slightly better is spot welding, but it still only works at specific points. The two methods that provide the highest shear strength are flow welding and structural adhesives, often performing up to three times better than rivets. Numbers aside, structural adhesives work—often as well as, or even better than, traditional fastening methods. They can be used in numerous applications: to bond metals, plastics, and composites, on both rigid and flexible surfaces, to withstand extremely high or low temperatures, and much more. We invite you to discover the best structural adhesives available in our online store, to find the one that best suits your business operations! Transparent Pvc Label,Gloss White Pvc Label,Transparent Pvc Sticker,Transparent Pvc Water Based Permanent Art Paper SOONTOMAX (TAISHAN) LABEL MATERIAL CO.LTD , https://www.stmlabel.comA Quick Overview of Structural Adhesives
Do Structural Adhesives Really Work? The Test Results Speak for Themselves
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