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Nov 11, 2021
Modified resin adhesive refers to a type of adhesive made by adding thermoplastic resin or synthetic rubber as a base material to thermosetting resin. Also known as composite adhesives and hybrid adhesives. Refers to various hybrid polymer adhesives.
Modified resin adhesive refers to a type of adhesive made by adding thermoplastic resin or synthetic rubber as a base material to thermosetting resin. Also known as composite adhesives and hybrid adhesives. Refers to various hybrid polymer adhesives.
Thermosetting resin adhesives are relatively brittle, and their impact strength and peel strength are relatively low. If it is used for viscous structural parts, it must be modified. The method of modification is to add a sufficient amount of thermoplastic resin or synthetic rubber to the thermosetting resin adhesive to increase its toughness, improve impact and peel resistance, and achieve the comprehensive performance indicators of structural adhesives. It is the same as thermosetting resin adhesive, which is cured by chemical reaction. The crosslinking and microscopic phase separation between the thermosetting resin and the thermoplastic resin (or rubber) in the curing reaction make the hybrid adhesive not only have the mechanical strength, heat resistance, aging resistance, and chemical resistance of thermosetting resin adhesives; but also Thermoplastic resin (or rubber type) adhesive has high peeling and high impact performance
Epoxy resin adhesive is a kind of engineering adhesive prepared by epoxy resin base material, curing agent, diluent, accelerator and filler. Because of its good bonding performance, good functionality, relatively low price, and simple bonding process, it has been widely used in the fields of household appliances, automobiles, water conservancy and transportation, electronic appliances and aerospace industries in recent decades. With the continuous development of high and new technology and nanotechnology, in recent years, the modification of epoxy resin has continued to deepen. Methods such as interpenetrating networks, chemical copolymerization and nanoparticle toughening have been widely used. There are also more and more varieties of performance adhesives.
Thermosetting resin
Thermosetting resin refers to a resin that undergoes chemical changes after heating, gradually hardens into shape, and does not soften or dissolve when heated.
The resin undergoes a chemical change after heating, and gradually hardens into shape, and will not soften or dissolve when heated. The molecular structure of thermosetting resin is body shape, which includes most of the condensation resin. The advantage of thermosetting resin is high heat resistance and not easy to deform under pressure. The disadvantage is poor mechanical properties. Thermosetting resins include phenolic, epoxy, amino, unsaturated polyester, and silicone ether resins.
synthetic rubber
Synthetic rubber is a highly elastic polymer synthesized by man-made. Also called synthetic elastomer, it is one of the three major synthetic materials, and its output is only lower than synthetic resin (or plastic) and synthetic fiber. The classification methods are diverse, the development history is long, and the research prospects are broad.