How Does the Performance of Adhesives Affect the Safety and Reliability of Automobiles?（2）
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Medium Resistance Performance
Prevention of Corrosion and Damage: During the use of an automobile, the adhesive will inevitably come into contact with various media, such as oil, water, gasoline, diesel, weak acids, and alkalis. Good medium resistance performance enables the adhesive to maintain stable performance under the erosion of these media without experiencing phenomena such as dissolution, swelling, and degradation. For example, if the adhesive at the bottom of the vehicle body is not resistant to water and salt corrosion, and it is exposed to a humid and salty environment for a long time, it will cause the adhesive to fail, and then damage the anti-corrosion layer of the vehicle body, leading to body rust, affecting the structural strength and service life of the automobile.
Ensuring the Normal Operation of Functional Components: For some components that come into contact with liquid media, such as the fuel system and the cooling system, the medium resistance performance of the adhesive can ensure that it still maintains good sealing and bonding effects when in contact with the corresponding media, preventing the leakage of fuel or coolant. Avoiding problems such as fires or engine overheating caused by leakage ensures the normal operation of various functional systems of the automobile.
Elasticity and Extensibility
Buffering Vibration and Stress: During the operation of an automobile, various vibrations and stresses will be generated. The elasticity and extensibility of the adhesive can enable it to play a buffering role between components, absorbing and dispersing these vibrations and stresses, and reducing the fatigue and damage of components caused by vibration and stress concentration. For example, at the connection between the vehicle body and the chassis, an adhesive with appropriate elasticity and extensibility can effectively buffer the vibration during the vehicle's operation, protecting the structural integrity of the vehicle body and the chassis and improving the reliability of the automobile.
Adaptability to Component Deformation: Under different working conditions of the automobile, some components may undergo a certain degree of deformation, such as the slight twisting of the vehicle body when turning or passing through bumpy roads. An adhesive with good elasticity and extensibility can adapt to these deformations and maintain the bonding state, ensuring that the connection between components will not break due to deformation, maintaining the stability and safety of the vehicle structure.
Environmental Protection Performance
Indoor Air Quality in the Vehicle: An adhesive with good environmental protection performance has a low release amount of harmful substances such as volatile organic compounds (VOCs), which can effectively reduce the odor and the content of harmful gases in the vehicle, providing a healthy driving and riding environment for the people inside the vehicle. Long-term exposure to high concentrations of harmful gases will cause damage to human health, affecting the driver's attention and reaction ability, and thus indirectly affecting the driving safety of the automobile.
Compliance with Regulatory Requirements: With the increasing strictness of environmental protection regulations, the automotive industry must use adhesives that meet environmental protection requirements to ensure that automotive products can pass relevant inspections and certifications, avoiding problems such as product recalls or other issues caused by non-compliance with regulations. This safeguards the market access and the legality of the use of automobiles, and maintains the reliability and safety of automobiles from another perspective.
