Against the backdrop of rapid development in automotive electronic applications, automotive integrated PCBs, as the core carrier of electronic products, are facing increasingly stringent environmental challenges. How to ensure that PCBs can maintain stable working conditions even when exposed to external factors such as moisture, dust, chemical corrosion, and mechanical impact has become a key concern for engineering and manufacturing personnel. For this reason, Yilian chose RTV SIPC 1859 dealcoholized silicone adhesive sealant as the solution. Through its application in PCB frame sealing and buckle fixing, it successfully built a sturdy waterproof, airtight, and mechanical protection barrier for automotive electronic systems.
Waterproof and airtight protection of automotive integrated PCB
With the continuous improvement of automotive intelligence and electronic system integration, automotive integrated PCBs play a crucial role in key components such as in vehicle networks, sensors, and control units. However, during the operation of automobiles, integrated PCBs often face severe challenges in the following aspects:
Waterproof and airtight requirements: During driving, cars not only need to deal with the invasion of rainwater, car wash water, and humid environments, but also need to prevent water vapor and dust from entering the interior through the gaps of the PCB shell, which can cause corrosion and damage to the circuit board and components.
Frame sealing and buckle fixation: To ensure the sealing effect, the PCB frame must be tightly sealed; Meanwhile, enhancing the stability and seismic resistance of the overall structure through buckle fixation is a necessary means to ensure the normal operation of electronic products in complex environments such as vibration and thermal shock.
Environmental adaptability: The working temperature range of automotive integrated PCBs is usually wide, and stable mechanical and electrical properties must be maintained from low temperature environments (-60 ℃) to high temperature environments (300 ℃). Sealing materials are required to have excellent chemical resistance, aging resistance, and moisture resistance.
In the face of this series of technological challenges, traditional sealants often struggle to meet all requirements simultaneously in terms of airtightness, temperature resistance, and corrosion resistance. After multiple tests and rigorous comparisons, Yilian ultimately chose RTV SIPC 1859 as the best solution.
RTV SIPC 1859 alcohol free silicone adhesive sealant is a neutral silicone sealing material that absorbs moisture from the air and solidifies at room temperature.
It is non corrosive to materials and has good adhesive and sealing properties for most plastic, metal, and other materials, protecting electronic products in a stable state under harsh conditions.
The cured elastomer of RTV SIPC 1859 silicone adhesive sealant has the following characteristics:
Excellent chemical resistance, low odor, and good adhesion
Low volatile matter not exceeding 500ppm, no corrosion or fogging in a sealed environment
Resistance to moisture, dirt, and other atmospheric components
Reduce mechanical stress and tension caused by mechanical, thermal shock, and vibration
Excellent outdoor aging resistance, with a service life of up to 20-30 years
Stable mechanical and electrical performance between -60-300 ℃
With the continuous innovation of automotive electronics and intelligent technology, the protection requirements for automotive integrated PCBs will become more diverse and stringent in the future. RTV SIPC 1859, as a high-performance silicone adhesive sealant, will play a key role in more application scenarios due to its excellent waterproof, airtight, and environmental erosion resistance performance. The Yilian team will continue to adhere to technological innovation, continuously optimize sealing processes and quality management systems, and provide higher-level protection solutions for automotive electronic products.
Tag: Integrated PCB Waterproof
