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Cure is characterised by expansion rather than shrinkage and uses include structural prepregs, liquid molding and film adhesives for composite construction, bonding and repair. The high aromatic content of the high molecular weight polymers provides enhanced mechanical and flammability performance compared to epoxy and phenolic resins.
Silicone: The most commonly found adhesive in optical bonding processes that dates back to the 1970s as a solution. [ citation needed ] Silicone's core properties of low conductivity and chemical reactivity, thermal stability, and ability to repel water and form watertight seals make it a common solution for optical bonding.
After application, the adhesive is cured onto the device through ultraviolet light (UV), heat, moisture, or a combination, depending on the manufacturer and specifications. Major applications include capacitive touch panels, 3D televisions (3D TV), and glass retarders. Optical bonding improves optical performance of displays.
Silicone caulk can be used as a basic sealant against water and air penetration. In organosilicon and polymer chemistry, a silicone or polysiloxane is a polymer composed of repeating units of siloxane (−O−R 2 Si−O−SiR 2 −, where R = organic group). They are typically colorless oils or rubber-like substances. Silicones are used in ...
Usually glass filled. Epoxy novolac resins used for printed circuit boards, electrical encapsulation, adhesives and coatings for metal. Benzoxazines, used alone or hybridised with epoxy and phenolic resins, for structural prepregs, liquid molding and film adhesives for composite construction, bonding and repair.
The high tack material is a polymer with low glass transition temperature and high entanglement molecular weight, whereas the low tack polymer has high glass transition temperature and low entanglement molecular weight. [6] The high tack material comprises about 95% of the adhesive and provides the majority of the adhesive's tackiness. [6]
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