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In 1964, Loctite introduced cyanoacrylate adhesives (a repackaged Eastman product, developed at Tennessee Eastman/Eastman Chemical in 1942, and originally marketed as "Eastman 910"), later known as "Super Glue". [4] It was the first of many new products, including silicones, epoxies, acrylics, and the development of new Loctite anaerobics. The ...
Thread-locking fluid is often a thixotropic fluid: under shear stress, it exhibits a time-dependent decrease in viscosity to allow it to be squeezed into place but not flow too quickly on its own. [3] Thread-locking fluid is typically sold in small containers, in amounts from 5 millilitres (about one teaspoon) to 250 millilitres (8.5 US fl oz).
Most glue sticks are designed to glue paper and card stock together and are not as strong as some liquid-based variants. They can be used for craft and design, office use, and at school. There are several varieties: permanent,washable, acid-free,non-toxic, solvent-free, and dyed (e.g. to see where the glue is being applied).
The glue gun melts the solid adhesive, then allows the liquid to pass through its barrel onto the material, where it solidifies. Thermoplastic glue may have been invented around 1940 by Procter & Gamble as a solution to the problem that water-based adhesives, commonly used in packaging at that time, failed in humid climates, causing packages to ...
At that time, stamp adhesives consisted of naturally occurring raw materials such as molasses, potato starch and occasionally fish glue, but these performed poorly. So, the stamps either stuck together or fell off prematurely and emitted an unpleasant odour. In addition, the stamps had to be moistened before fixing, which was often done by licking.
After degreasing, a good test to determine cleanliness of the surface is to use a drop of water. If the drop spreads on the surface, a low contact angle and good wettability has been achieved, which indicates the surface is clean and ready for application of the adhesive. If the drop beads up or retains its shape, the degreasing process should ...
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Liquid versions of hide glue are now available; typically they have urea added to keep the glue liquid at room temperature and to extend drying time. Examples of liquid hide glue are Old Brown Glue or Titebond Liquid Hide. Hide glue does not creep. Hide glue joints are easy to repair, by just heating and adding more hide glue. [7] [8] [9]