On October 16, 2021, the Shenzhou 13 manned spacecraft was successfully launched at the manned space launch site of the Jiuquan Satellite Launch Center. This time, it will lead three new astronauts to start a space journey again, which will last for 6 months. Life on a business trip. A historic moment! Wosai is here also wishing the heroes all the best, peace, and triumphant return!
The most important field of application of aerospace glue for bonding technology is the aerospace industry. Because the structure of the aircraft adopts the bonding process, it has obviously received a series of good effects such as reducing the quality of the structure, improving the fatigue life, and simplifying the process. Therefore, many countries have adopted bonding technology as a new process for aircraft manufacturing. Synthetic aerospace glue was used in the aircraft industry around the 1940s, and there is almost no bonding process on almost all modern aircraft. The bonding of some aircraft has become the basis of the entire aircraft design. In the B-58 heavy-duty supersonic bomber, bonded wall panels accounted for 85% of the total area of the machine, of which the honeycomb sandwich structure accounted for 90%. Each aircraft uses more than 400 kilograms of glue, which can replace about 500,000 rivets. Each Boeing 747 jetliner uses 2500 square meters of film and 450 kg of sealing aerospace glue. The adhesives commonly used in the aviation industry are phenolic acetal, phenolic butyronitrile, phenolic epoxy aerospace glue and so on. The second-generation acrylic adhesives have been widely used in aircraft manufacturing, such as the bonding of aircraft luggage compartments, doors, computers, and electronic components and audio equipment.
Because most aerospace products use light alloys, honeycomb structures and composite materials, but the aerospace products are used in harsh environments and have higher requirements for glue. They need to be able to withstand ultra-high temperature, temperature alternation, high vacuum, ultra-low temperature, thermal cycle, ultraviolet light, Environmental tests such as charged particles, micrometeorites, and atomic oxygen.
Specifically for the use of adhesives in the aerospace industry, the Adhesives Research Institute has developed more than 100 kinds of special adhesives and sealants, mainly including polyurethanes, phenolic resins, epoxy resins, silicones, acrylics, and organic boron. Of these adhesives, most of them have been used in aerospace products such as China’s carrier rockets, satellites and spacecraft.