The concept of toughening agent in LED silica gel

Some LED silica gel (a type of electronic silica gel, generally used in the sealing and bonding of LED lighting products) contains a toughening agent, and what is called a toughening agent? The toughening agent is a substance added to improve the brittleness of the adhesive and improve its flexibility. It can reduce the shrinkage during curing and increase the peel strength and impact strength of the adhesive layer.

Tougheners generally contain reactive groups that can participate in the curing reaction and become part of the crosslinked structure. Useful toughening agents are liquid polysulfide rubber, terminal carboxyl liquid nitrile rubber, low molecular polyamide, chlorosulfonated polyethylene, hydroxyl terminated liquid polybutadiene rubber, hydroxyl terminated polyether, unsaturated polyester resin, copolymerization Nylon, polyvinyl acetal, polyurethane, nitrile rubber, carboxylated nitrile rubber, polyether, polyimide, polyetheretherketone, polyether polyol, carboxylated nitrile latex, carboxylated styrene butadiene latex, and the like.

Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent