Against the backdrop of the global automotive industry accelerating its transformation towards electrification and intelligence, a seemingly insignificant material – industrial adhesives – is quietly reshaping the core logic of automotive manufacturing. From Tesla’s integrated die-casting body to BYD’s blade battery packaging, adhesive technology has become a “hidden hero” driving innovation in the automotive industry with its advantages of lightweight, high strength, and environmental protection.
1. Lightweight Revolution: Every gram of glue is a weight reduction password
Under the ultimate pursuit of range in new energy vehicles, international car companies have adopted structural adhesives to replace traditional welding processes. The BMW i-series electric vehicles achieve carbon fiber body bonding through epoxy resin structural adhesive, reducing the weight of the white body by 30%; The Tesla Model Y uses polyurethane structural adhesive combined with integrated die-casting technology to simplify 70 parts into one integral component, reducing production line energy consumption by 40%. According to Frost&Sullivan’s report, the global market size of structural adhesives for automobiles has reached $5.8 billion in 2023, with a compound annual growth rate of 12.7%.
2. The electrification transformation has stimulated the demand for special adhesives
The field of power batteries has become the main battlefield for adhesive technology innovation. The flame-retardant thermal conductive adhesive developed by CATL can control the working temperature of battery cells within ± 2 ℃, and improve thermal management efficiency by 60%; BASF’s latest silicone sealant can withstand 1500 charge and discharge cycles, providing 20 years of long-term protection for battery packs. Industry data shows that the amount of adhesive used in each electric vehicle has reached 3-5 times that of traditional fuel vehicles, driving the market size of related materials to exceed 10 billion by 2025.
3. Green manufacturing with dual wheel drive
Under the pressure of the EU carbon tariff policy, environmentally friendly products such as water-based polyurethane adhesives and bio based epoxy resins are rapidly penetrating. The plant-based structural adhesive launched by Henkel has reduced its carbon footprint by 45% and has been applied to Volkswagen ID. series models; The detachable adhesive system developed by 3M has increased the car recycling rate to 95%. The Secretary General of the China Adhesive Association pointed out that the hydration rate of adhesives in the automotive industry has increased from 32% in 2018 to 67% in 2023, reducing VOC emissions by over 100000 tons annually. ”
4. Intelligent production reshapes the industrial ecosystem
Under the wave of Industry 4.0, ABB’s AI vision dispensing robot will control the coating accuracy within 0.1mm and achieve 100% online detection with the help of a digital twin system. Klaus Maffei’s UV curing equipment reduces the curing time of adhesives from 2 hours to 30 seconds, increasing production efficiency by 15 times. This collaborative innovation of “smart manufacturing+materials” is restructuring the value chain of automotive manufacturing.
Industry Outlook
With the popularization of new materials such as carbon fiber composite materials and magnesium aluminum alloys, multifunctional adhesives will develop towards the direction of “structure function integration”. The conductive and heat-conducting adhesive developed by Dow Chemical has achieved the three in one function of “structural fixation+thermal management+current conduction” for battery modules; The shape memory adhesive developed by the Ningbo Institute of Materials Science and Technology, Chinese Academy of Sciences, can automatically repair micro cracks in car bodies after collisions. Experts predict that by 2030, adhesive technology will undertake over 60% of the connection tasks for new energy vehicles, becoming an indispensable core technology in the era of intelligent vehicles.
