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Types of Advanced Adhesive Systems

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Created by hbfuller14 (User Generated Content*)User Generated Content is not posted by anyone affiliated with, or on behalf of, Playbuzz.com.
On Apr 30, 2018
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Types of Advanced Adhesive Systems

The use of adhesives edge over other forms of binding techniques like sewing, mechanical fastening, thermal bonding, etc. Adhesives, otherwise known as glue, mucilage, or paste are used against two separate items to bind together and inhibits their separation. Found naturally or produced synthetically, both serve the same purpose. However, advanced adhesives are those which are artificially produced, such as synthetic glue. These are mastered in increasing the tensile strength of the items that are being glued to stick together.

Over the course of time, the economic importance of adhesives has grown exponentially. Contributing over 50 billion dollars to the market in 2019, the future of the product looks bright. However, such high-performance adhesive systems are organized by the method of adhesion. They are categorized as Reactive and Non-reactive adhesives or in the form of natural and synthetic origin.

By the source of their origin adhesives are-

Natural- Made from organic sources like vegetable starch(dextrin), and natural resins, often being described as bio-adhesives. Though it provides some amount of separation resistance, these are not as effective as synthetic adhesives.

Synthetic- Because of physical, mechanical and chemical properties these type of adhesives are the most widely used in various sectors and far superior to natural adhesives. The water-resistant ability of synthetic adhesives is ideal for woodwork and joining plastic components. The adhesives from this category are factory-produced based on elastomers, thermoplastics, emulsions,  etc.

By reactiveness, adhesives are classified as reactive and non-reactive.

Non-reactive-

Drying- Solvent-based adhesives and polymer solvent adhesives, otherwise known as emulsion adhesives that are hardened by drying. These are being extensively used in the woodworking and packaging industries.

Pressure Sensitive- Designed for either permanent or temporary bond, these types of adhesives form a bond by the use of pressure on the objects.

Hot- Also known as hot melt adhesives applied in the molten form. After the cooling of the adhesive, the result can be seen.

Contact Adhesives- For strong bonds and high resistance, contact adhesives are the most suitable. Polychloroprene and natural rubber are the most commonly used contact adhesives. These are applied by slathering on the surfaces of the objects and then allow to dry for a while. The gentle press of both objects will hasten the bonding process.

 Reactive –

The reactiveness of the adhesive hinges upon the mixing of multiple substances together to form a solid base. The biggest advantage of such reactive adhesives is that it cures to the material to inhibit melting with excellent temperature and environmental resistance. Though generally made out of the complex blending of initiator and Monomer (Resin), the chemical reaction of this causes polymers to cross-link into acrylics, epoxies, and urethanes. Other reactive adhesives are cyanoacrylates, MS polymer, silicones, methacrylate, acrylic tapes.

The different types of advanced adhesive systems are used on the basis of material and the size of the object which determines the strength of adhesion that is required.

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