The bonding process of epoxy resin adhesive is a complex physical and chemical process, including steps such as infiltration, adhesion, curing, etc., and finally a cured product with a three-dimensional cross-linked structure is generated, which combines the bonded object into a whole. The bonding performance not only depends on the structure and performance of the adhesive and the structure and bonding characteristics of the surface of the adherend, but also is closely related to the joint design, the preparation process and storage of the adhesive, and the bonding process. At the same time, it is also restricted by the surrounding environment. Therefore, the application of epoxy resin adhesive is a systematic project, and the performance of epoxy resin adhesive must be compatible with the above-mentioned factors that affect the bonding performance in order to obtain the best results. Using epoxy resin adhesives of the same formula to bond objects of different properties, or using different bonding conditions, or using in different environments, will have great differences in performance, and full attention should be paid to it when applying.
Compared with traditional riveting, welding, and threaded connection, bonding has undisputed superiority in terms of improving stress, improving structural performance, reducing the quality of parts, or improving process operations and reducing costs. Therefore, fast development. Epoxy resin adhesives have excellent bonding properties, and other properties are also relatively balanced. It can bond with a variety of materials and dissimilar materials. Through the formulation design, it can almost meet the requirements of various performance, process and performance. It has been widely used in various fields from daily life to cutting-edge technology, and has become an indispensable material in the fields of aircraft, missiles, rockets, giant stars, spacecraft, automobiles, ships, machinery, electronics, and civil engineering.
Epoxy resin adhesives for civil engineering conform to the general trend of modern civil engineering development, so they have developed rapidly in the past ten years.
Epoxy adhesive in aviation. There have been a large number of applications in the aerospace industry, mainly for the manufacture of honeycomb sandwich structures, fully bonded sheet metal structures, composite metal structures and metal-polymer composite composite structures. Its application has become one of the foundations of the entire aircraft design.
Epoxy adhesives are used in the electrical industry: insulation and fixation between rigid rods in motors, bonding between silicon steel sheets in transformers, and bonding of electron accelerator cores and phase devices for long-distance transmission of three-phase currents.
At present, epoxy resin adhesives have been widely used in electronics and electrical fields because of their excellent comprehensive properties, especially outstanding insulation properties. However, in the fields of electronics, electrical and structural adhesives represented by applications, the market has put forward more stringent requirements, and also put forward requirements for rapid curing and oil surface bonding. Therefore, epoxy resin adhesives must be continuously modified. In order to continuously develop and meet the application requirements of all aspects.
Post time: Apr-19-2021