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Liquid optically-clear adhesive (LOCA) is liquid-based bonding technology used in touch panels and display devices to bind the cover lens, plastic, or other optical materials to the main sensor unit or each other. These adhesives improve optical characteristics and durability. LOCA glue is often hardened using ultraviolet light.
Structural adhesives can be used to create load-bearing joints. Although many adhesives such as sealants, hot melt adhesives and even acrylic foam tapes can bear loads, the term structural adhesive is typically used where joints will have lap shear strength greater than 1450 psi. [3] The different types of structural adhesives are: Epoxies
Loctite is an American [1] brand of adhesives, sealants, surface treatments, and other industrial chemicals that include acrylic, anaerobic, cyanoacrylate, epoxy, hot melt, silicone, urethane, and UV/light curing technologies. Loctite products are sold globally and are used in a variety of industrial and hobbyist applications.
The bonding temperature is lower than with most other HMAs, only about 50 °C (122 °F) to 70 °C (158 °F), when the adhesive behaves as a soft rubber acting as a pressure-sensitive adhesive. The surface wetting in this amorphous state is good, and on cooling the polymer crystallizes, forming a strong flexible bond with high cohesion.
Resorcinol glue, also known as resorcinol-formaldehyde, is an adhesive combination of resin and hardener that withstands long-term water immersion and has high resistance to ultraviolet light. [ 1 ] [ 2 ] The adhesive, introduced in 1943, has been popular in aircraft and boat construction.
The pores and whiskers produced can be penetrated by selecting a low viscosity adhesive, like a 3M 1838 epoxide resin or an Epo-Tek 301 epoxy. The surface oxide can be compromised if it is subjected to high temperatures, above 300 °C, and humidity prior to bonding. [7] Pasa Jell wet and dry hone are chemical etchants produced by Semco.
Adhesive bonding is a joining technique used in the manufacture and repair of a wide range of products. Along with welding and soldering, adhesive bonding is one of the basic joining processes. In this technique, components are bonded together using adhesives. The broad range of types of adhesives available allows numerous materials to be ...
In contrast, pressure-sensitive adhesives (PSAs) form a bond simply by the application of light pressure to marry the adhesive with the adherend. Pressure-sensitive adhesives are designed with a balance between flow and resistance to flow. The bond forms because the adhesive is soft enough to flow, or wet, the adherend.