Activators & Primers for Structural Engineering

Bonding permeable substrates on a permanent basis are no easy task; however, the use of adhesive primers and activators have made this challenging task much simpler. Adhesive activators are substances that hasten the curing rate of bonding elements. Adhesive curing is greatly facilitated by use of activators in areas which have no access to heat and light thereby preventing the activation of the bonding process.
Adhesive activators are used in combination with structural adhesives for bonding of ferrites or metals. Many areas where they are a major component include applications like motor assembly, appliance manufacturing, furniture assembly, etc. Basically, all industrial applications find a great use for adhesive activators to quicken the cure speed and enhance adhesion of their bonding needs. Bond strengths are increased between opaque surfaces by application of an adhesive activator to a metal substrate or varied glass and engineering plastic surfaces.
Structural Anaerobic Adhesives and Epoxy Adhesives & Polyurethane Adhesives develop long-lasting bonds when used with adhesive activator between closely placed parts for quick joining of metals, magnet or ferrite bonding. Besides providing a steadfast bonding they ensure the fixture is done in a matter of seconds. There are varied types of activators to suit the differing requirements of clients. Some of them work on an anaerobic adhesive to hasten their speed cure. They are a vital aspect when there is a need to cure speedily on surfaces that are quite passive like inert surfaces, stainless steel or when a requirement for filling a wider gap exists or even in regions of extreme cold that causes slowing down of the anaerobic compounds’ curing process. Yet others inhibit the absorption of superglues with lower viscosity into porous substrates and enable bridging gaps thereby reducing the time of polymerization.
Primers are substances that act as pre-activators to form a bonding layer between the substrate and the adhesive element. Application is done through wiping, brushing or dipping. Surface primers help to enhance adhesion of hard to bond substances when the use of Cyanoacrylate adhesives is involved. Snags often faced with elastomers, silicones, olefins are overcome through specific primers which ensure that even the toughest bonding applications are achieved and adequate bond strengths are lent to substrates like polyolefins, EPDM and Silicone cord.
Primers act as protective shields especially for the steel against corrosion elements for short time periods. Standard primers are provided by manufacturers for the purpose. However, the best protection for the steel against rusting comes from adhering to a timely schedule of the assembly and erection process. Normally steel is provided by manufacturers to the construction clients after applying primer on to it and attaching a written schedule. The primer could either be a red primer or a gray one. Gray primers are costlier than red ones and come in most cases with a schedule impact. The increased cost is mostly due to paint cost and production issues. Gray primer enables rusting signs to be noticed immediately due to the contrast in colors of rust and primer.
The role of activators and primers for structural engineering cannot be disputed and the above brief gives an insight into why this is so!

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