In the modern technological environment,
Electromagnetic protection absorbing coatingDue to its ability to effectively absorb and attenuate electromagnetic waves, it is widely used in electronic equipment, military equipment, aerospace and other fields. However, coatings face complex environmental conditions in practical use, and their weather resistance and corrosion resistance are crucial for the long-term stability of product performance. Advanced Institute (Shenzhen) Technology Co., Ltd. has achieved fruitful results in the research and development of electromagnetic protection absorbing coatings, and is committed to improving the comprehensive performance of coatings.
1、 Weather resistance
（1） Principle of weather resistance
Weather resistance refers to the ability of a coating to maintain its original performance under climatic conditions such as sunlight, heat, cold, wind, and rain. The absorbing agent and resin matrix in electromagnetic protective absorbing coatings together form a protective system. The ultraviolet energy in sunlight is high, which can cause resin molecular chains to break and degrade, leading to coating aging, discoloration, and powdering. Under long-term illumination, the microstructure and electromagnetic properties of absorbers may also undergo changes. The absorbing coating developed by Advanced Institute (Shenzhen) Technology Co., Ltd. effectively resists UV erosion by selecting special resins and UV resistant additives. For example, introducing a benzene ring structure into the resin increases the rigidity of the molecular chain and enhances its resistance to UV degradation.
（2） Weather resistance test
Common weather resistance testing methods include natural aging and artificial accelerated aging. Natural aging involves long-term exposure outdoors, with long cycles but real results. Artificial accelerated aging evaluates the weather resistance of coatings in a short period of time by simulating natural environmental factors such as light, temperature, and humidity.
Advanced Institute (Shenzhen) Technology Co., LtdAdvanced artificial accelerated aging equipment, such as xenon lamp aging test chambers, can be used to accurately control light intensity, temperature, and humidity, simulating different regional climate conditions. After extensive testing, the electromagnetic protective absorbing coating developed by it has undergone 1000 hours of aging testing in a simulated tropical marine climate environment. The appearance of the coating has not changed significantly, and the absorption performance has decreased by less than 5%, demonstrating excellent weather resistance.
2、 Corrosion resistance
（1） Principle of Corrosion Resistance
In corrosive environments, media such as moisture, oxygen, acid and alkali can corrode coatings, damage their structure, and thus affect electromagnetic protection performance. The corrosion resistance of electromagnetic protective absorbing coatings mainly depends on the chemical stability of the resin matrix and the density of the coating. Advanced Institute (Shenzhen) Technology Co., Ltd. adds sheet-like fillers with shielding effects, such as mica powder and glass flakes, to the coating formula. They interlock with each other in the coating, forming a tortuous shielding path and delaying the speed of medium penetration into the substrate. At the same time, chemical resistant resins such as epoxy resins are selected, whose functional groups such as ether bonds and hydroxyl groups in the molecular structure have stable chemical properties and can effectively resist acid and alkali corrosion.
（2） Corrosion resistance test
Common corrosion resistance tests include salt spray test, wet heat test, etc. Salt spray test simulates the marine environment, placing the coating specimen in a test chamber filled with salt spray to observe the corrosion of the coating. The wet heat test examines the corrosion resistance of coatings in high temperature and high humidity environments. The salt spray test chamber of Advanced Institute (Shenzhen) Technology Co., Ltd. can accurately control the salt spray concentration, temperature, and humidity. In the salt spray test of 5% sodium chloride solution, the electromagnetic protective absorbing coating specimens developed by the company have undergone 1000 hours of testing, and the coating has no foaming, rusting, or peeling phenomena, demonstrating good corrosion resistance and ensuring the stability of electromagnetic protection performance in harsh environments.
Developed by Advanced Institute (Shenzhen) Technology Co., Ltd
Electromagnetic protection absorbing coatingExcellent performance in weather resistance and corrosion resistance. By continuously optimizing coating formulations and production processes, reliable electromagnetic protection solutions have been provided for the long-term stable operation of electronic and military equipment in complex environments, promoting the development and application of electromagnetic protection technology.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.
