Adhesives and coatings

Differentiates between adhesives and coatings, types of coatings and adhesives, application areas etc.

1. Adhesives a substance used for sticking objects or materials together; glue . any substance applied to one surface, or both surfaces, of two separate items that binds them together and resists their separation Adjectives may be used in conjunction with the word "adhesive" to describe properties based on the substance's physical or chemical form, the type of materials joined, or conditions under which it is applied

2. Coatings A coating is a covering that is applied to the surface of an object, usually referred to as the substrate. The purpose of applying the coating may be decorative, functional, or both. The coating itself may be an all-over coating, completely covering the substrate, or it may only cover parts of the substrate . Paints and lacquers are coatings that mostly have dual uses of protecting the substrate and being decorative, although some artists paints are only for decoration, and the paint on large industrial pipes is presumably only for the function of preventing corrosion.

3. USES OF ADHESIVE.

4. INDUSTRIAL/ COMMERCIAL USE adhesive usage in all kinds of industries, small or heavy. In small industries like those of food products, toys or stationary items, adhesives play an integral role in processing to packaging In heavy industries, adhesives play a central role, right from assembling spare parts of any machine, car paint or branding them with labels. In the construction industry too, for uniform distribution of stress, woods are bonded with strong adhesives. Apart from that, for painting and furnishing or home décor, adhesives are very essential.

5. Household Use Right from sticking envelopes to rejoining broken toys, we use adhesives very frequently In form of glue sticks, cello tapes or gums, we use adhesives everyday to mend shoes, to glue postage stamps, repair something or attaching tags to gifts . The car industry typically uses polyurethane adhesives for vehicle interiors and to bond windshields Wood chips or sawdust can be mixed with polyurethane adhesives to make fiberboard.  Conveyor belts are closed with the help of polyurethane adhesives.

6. USES OF Coating

7. To provide adhesion or adhesive properties Non-stick PTFE coated- cooking pans Release coatings e.g. silicone-coated release liners for many self-adhesive products primers encourage subsequent coatings to adhere well (also sometimes have anti-corrosive properties)

8. For optical purposes Reflective coatings for mirrors Anti-reflective coatings e.g. on spectacles UV- absorbent coatings for protection of eyes or increasing the life of the substrate Tinted as used in some coloured lighting, tinted glazing, or sunglasses

9. Protective purposes Most surface coatings or paints are to some extent protecting the substrate Sealing and waterproofing wood Sealing the surface of concrete Waterproofing and damp proofing of concrete walls Roof coating Concrete bridge deck membranes Sealing and waterproofing of masonry Preserving machinery, equipment and structures Wear Resistance Anticorrosion Hard  anti-scratch coating on plastics and other materials e.g . of titanium nitride to reduce scratching and abrasion loss Barrier coatings on concrete, metals and alloys subject to erosion/abrasive attack

10. To provide/enhance electrical properties Conformal Antenna, e.g., metal coatings on plastic airframes Conductive coatings e.g. to manufacture some types of  resistors Insulating coatings e.g. on  magnet wires  used in transformers

11. For catalytic action To Provide Magnetic Properties To provide odor/scent to substrate Coatings for self cleaning glass Magnetic properties such as for magnetic media like cassette tapes, floppy disks, and some mass transit tickets Scent properties such as scratch and sniff stickers and labels uses special coatings

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