In a shop you might be faced with a huge range of adhesives: some designed for specific tasks, others for bonding more than one material.
In general, there are six main types of adhesives:
o Contact adhesives, the best known of which are Evo-stik and Thixofix
o Woodworking adhesives - for example Unibond
o Cyanoacrylic adhesives or “superglue”
o Two-component epoxy adhesives Araldite is the best known
o Two-part acrylic paints, similar in use to acrylic paints
o 'Universal' or all-purpose adhesive, such as U H U or Durofix.
In addition to these main types, there are several specialty repair adhesives - for joining glass, mending PVC, and joining Styrofoam, as well as adhesives for jobs such as attaching wall tiles, attaching wallpaper, and hobby work with paper and cardboard.
When choosing an adhesive for a specific task, you need to consider a few points.
First, what materials are you assembling? Of course the glue must be suitable for both materials if they are different, but the main problem here is with plastics and recognizing the plastic is the first task.
Second, how important is strength? With wood glues, the bond can be as strong as the wood itself, while with metal and plastics it is usually weaker. If strength is important, you may need to consider strengthening the joint in some way. You can know more here about electronics assembly adhesives.
Third, how big is the gap that needs to be filled? Often joining two materials together involves some level of gap filling, and adhesives can handle this differently. For example, contact adhesives need a small gap in which to work, while eyanoacrylates won't work unless the gap is really, really small. Epoxy adhesives, on the other hand, work with both small and large gaps.
Fourth, what kind of temperature will the adhesive be exposed to? Some adhesives (known as thermoplastics), such as Adhesives such as contact adhesives and many of the "general purpose" adhesives will not withstand curing, while many others (known as thermosets) will retain their strength up to moderately high temperatures. This could play a role in the repair of dishes.
After all, how important is appearance? Most adhesives dry to a clear finish, but some end up a pale creamy yellow. Whether or not this shows up obviously depends on the thickness of the glue line and, just as important, how well you remove the excess; With many adhesives it is difficult to avoid leaving some adhesive behind.
Contact adhesive
Contact adhesives are primarily used for bonding thin coverings such as plastic laminate and veneer to a surface and for shoe repairs.
A contact adhesive is applied to the two surfaces to be bonded and dried. The two surfaces are then pressed together and the glue allowed to set. With most contact adhesives, bonding is instantaneous (requiring careful positioning); some contacts allow a short time during which the two surfaces can be matched.
Many contact adhesives are solvent based, which means good ventilation is important and open flames and cigarettes should not be allowed in the bonding area. Acetone (nail polish remover) or a special remover is required for a solvent-based contact adhesive; Water-based contact adhesive can be removed with a damp cloth.
Adhesives for wood
The most common type of woodworking glue is PVA (polyvinyl acetate) glue. There are several brands available and the recommended solvent is usually warm water.
Where the joint might get hot or be exposed to moisture, you should use one of the special thermoset types often sold for outdoor use.
The traditional animal and fish glues for woodworking are still available: they are mainly used in furniture restoration, where at some point it may be necessary to disassemble the piece of furniture.
To know more: https://www.epoxyadhesiveglue.com/consumer-electronics-assembly/
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