In modern electronic device manufacturing, high-frequency sound channel sealing and cover shell sealing are key links to ensure device performance and reliability. Organic silicone adhesive sealant has become an ideal choice in this field due to its excellent physical and chemical properties. This article will focus on the application of silicone adhesive sealant in high-frequency sound channel sealing/cover shell sealing, and discuss in detail the functional requirements, viscosity range, and specific model selection of Elaplus.
High frequency sound channel sealing/cover shell sealing.
Functional requirements
(1) Smooth appearance
In the sealing of high-frequency head channels and cover shell, a smooth appearance is an important functional requirement. Organic silicone adhesive sealant can form a uniform and smooth surface after curing, which not only improves the appearance quality of the product, but also helps prevent the accumulation of dust and impurities, thereby extending the service life of the equipment.
(2) Low volatile matter
Low volatile matter is another key functional requirement. Organic silicone adhesive sealant releases very little volatile matter during the curing process, which helps reduce environmental pollution and also avoids corrosion and damage to internal components of equipment.
(3) 60 degree water bath has good air tightness
Air tightness is a crucial performance indicator in high-frequency head channel sealing and cover shell sealing. Organic silicone adhesive sealant can maintain good airtightness in a 60 degree water bath environment, ensuring stable operation of equipment in various harsh environments.
Viscosity range
(1) Semi fluid
The semi fluid state of silicone adhesive sealant has good fluidity, which can easily fill small gaps and complex geometric shapes, ensuring the uniformity and consistency of the sealing effect.
(2) Ointment
Organic silicone adhesive sealant in paste state has high viscosity and strong adhesion, suitable for sealing occasions that require high mechanical strength and durability.
Yilian model: SIPC 1859 silicone adhesive sealant
RTV 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 1859 silicone adhesive sealant has the following characteristics:
Product Features
✔ Excellent chemical resistance, low odor, good adhesion
✔ Low volatile matter not exceeding 500ppm, no corrosion or fogging in a sealed environment
✔ Resist 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 ℃
Application scenarios
✔ Household electric iron, microwave oven, induction cooker
✔ Automotive lighting fixtures, electronic EPS power assistance, DC fans
✔ PCB component fixing and bonding, LCM frame sealing
✔ Engineering machinery joint sealing, control box housing CIPG/FIPG high-frequency sound channel sealing/cover plate housing sealing.
