Tecnite® Adhesives and Sealants
Modern adhesives and sealants are replacing classic types of joints such as screw or rivet connections in more and more applications. The reasons for this are increasingly better bonding performance, easy and safe handling and of course, last but not least, cost.
The adhesives from Costenoble have many outstanding properties: they are weather-resistant, thermally and chemically stable, and have very good adhesion and low flammability. The variety of available products and possibilities allows a very wide range of applications. We have described the available adhesive types in more detail below:
Anaerobic Adhesives and sealants
Anaerobic adhesives only harden in the presence of metal ions (such as iron or copper) and with the exclusion of air. Only metal materials can be bonded with these one-component systems as free metal ions are required as reaction partner for the hardening. It is recommended to only bond metal and non-metal using an activator. Anaerobic adhesives and sealants are mainly used as thread lockers and for shaft and flange bonding.
The one-component cyanoacrylate adhesives harden by polymerisation. This is initiated by contact with the surface. It runs very quickly, depending on the type of the surfaces, adhering moisture and the air humidity. They are therefore also known under the name superglue or instant adhesive. They are usually used for small area bondings with very narrow joint gap. For this, they are however suitable for a wide range of materials such as rubber, composites, phenol and silicone based materials, polypropylene, polyethylene as far as PTFE and other polyolefins.
Two-component epoxy resin adhesives
Two-component epoxy resin adhesives consist of the resin and hardener components. After mixing with the hardener, the epoxy resin forms a stable thermoset. The hardening reaction is usually performed at room temperature. Higher strengths can be achieved under certain circumstances at a higher temperature. The hardened adhesive has very high strength. It is frequently used for structural bonds, for example in vehicle and aircraft manufacture.
One-component epoxy resin adhesives
The epoxy resin and the hardener are already mixed with each other in the ready to use ratio for the one-component epoxy resin adhesives. These adhesives are hardened hot as the hardeners used only react very slowly at room temperature.
Methyl methacrylate structural adhesives
Methyl methacrylate adhesives are two-component reaction adhesives for which the monomer used is polymerised by radical chain reaction. Methyl methacrylate adhesives are primarily used for structural bonding of metals and plastics. They have high tensile, shear and peel strength, high elasticity and harden quickly.
Adhesives that harden under ultraviolet light are cold-hardening, solvent-free one-component adhesives. Photoinitiators that are activated with ultraviolet light are added to them. These transform to radicals that in turn initiate the hardening process. The products harden quickly and enable excellent bonding of many different materials such as metals, glass and most plastics. They are suitable for a wide range of applications.