Different for different adhesives. Hotglue for instance is merely a physical change while a 2-component epoxy glue undergoes a chemical change.
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Adhesives work by creating a bond between two surfaces. They typically contain chemicals that form bonds between the adhesive and the surfaces it is applied to. This bond can be generated through processes such as evaporation, chemical reaction, or mechanical interlocking.
Chemical glue refers to a type of adhesive that forms a bond by undergoing a chemical reaction. This can include adhesives that cure through reactions like polymerization, crosslinking, or solvent evaporation to create a strong bond between surfaces. Examples of chemical glues include epoxy, cyanoacrylate (super glue), and polyurethane adhesives.
A non-reactive adhesive is one which does not use any chemical reaction in the generation of the process of adhesion, like epoxies or cyanates (super glue) yet still adhere by electrostatic or mechanical intercalationn not reacting chemically to adhere to the surface.
Solvent adhesives join surfaces by the action of the solvent 'carrier' evaporating or drying out, leaving the adhesive in place. -Other types of non-solvent adhesives like contact cement and epoxy rely on pressure or chemical reaction.
"Epoxy adhesives are a major part of the class of adhesives called "structural adhesives" or "engineering adhesives" (which also includes polyurethane, acrylic, cyanoacrylate, and other chemistries.) These high performance adhesives are used in the construction of aircraft, automobiles, bicycles, boats, golf clubs, skis, snow boards, and other applications where high strength bonds are required. Epoxy adhesives can be developed to suit almost any application. They are exceptional adhesives for wood, metal, glass, stone, and some plastics. They can be made flexible or rigid, transparent or opaque/colored, fast setting or extremely slow setting. Epoxy adhesives are almost unmatched in heat and chemical resistance among common adhesives. In general, epoxy adhesives cured with heat will be more heat- and chemical-resistant than those cured at room temperature. Some epoxies are cured by exposure to ultraviolet light. Such epoxies are commonly used in optics, fiber optics, optoelectronics and dentistry." Reference: Wikipedia
Adhesives are usually chemical compounds used to bind two materials together. Sealants are substances used to keep out other substances. Examples: Glue is an adhesive You put sealant on wood to keep it from absorbing water
What adhesives work with aluminum
Epoxy glues are the strongest adhesives.
You couldn't repair many things without adhesives.
Sodium tetraborate, also known as borax or sodium borate, is a salt with the chemical formula Na2B4O7. It is commonly used in cleaning products, adhesives, and as a buffer in chemical laboratories.
Some adhesives that are compatible with polystyrene include cyanoacrylate (super glue), epoxy, and solvent-based adhesives.