KE-1830

Shin-Etsu KE-1830 is a one-component heat-curable silicone sealant/adhesive, mainly used in industrial scenarios that require high bonding strength, high-temperature resistance, and adaptability to complex environments. Below are its core applications and characteristics:

1. Sealing and Bonding in Electronic and Electrical Equipment

High-voltage circuit insulation: It can be used for potting and sealing of high-voltage modules, sensors, and hybrid integrated circuits (ICs), providing reliable electrical insulation performance (volume resistivity up to 2 \times 10^{14} \, \Omega \cdot \text{cm}) while withstanding extreme temperatures ranging from -55℃ to 200℃.

 Fixing of precision components: It has excellent bonding strength to various materials such as metals (aluminum, copper, stainless steel), ceramics, and plastics (e.g., PBT, PC, ABS). For example, the shear strength on PBT plastic can reach 2.5 MPa (initial value), and it still maintains a strength of over 2.1 MPa even after high-temperature and high-humidity or salt spray tests.

Sensor protection: Used for potting and packaging of sensors to resist moisture, dust, and chemical corrosion, ensuring long-term stable operation in harsh environments.

2. Structural Bonding in Automotive and Industrial Machinery

Bonding of high-temperature components: In high-temperature areas around automotive engines and gearboxes, it can bond metal and plastic components (e.g., PPS resin) and withstand long-term high temperatures (performance retention rate exceeds 90% after 1000 hours at 150℃).

Sealing and shock absorption: Used for automotive door and window weatherstrips and flange sealing of industrial equipment. With its high viscosity (1200 Pa·s) and elasticity, it effectively fills gaps and absorbs vibrations.

Chemical-resistant applications: It maintains stable bonding performance in environments exposed to oil, coolant, or organic solvents (e.g., automotive engine compartments).

3. Aerospace and Precision Instruments

Adaptability to extreme environments: It passes ozone resistance tests (no obvious aging after 300 hours at 80 ppm concentration) and thermal shock tests (1000 cycles of -55℃ to 150℃), making it suitable for sealing aerospace electronic equipment and assembling precision instruments.

Bonding of lightweight materials: It can bond lightweight materials such as aluminum alloys and carbon fibers, meeting the dual requirements of structural strength and weight in the aerospace field.

4. Construction and Industrial Sealing

Joint sealing in high-temperature environments: Used for joint sealing of high-temperature equipment such as industrial pipelines and ovens, withstanding 200℃ high temperatures and preventing gas leakage.

Bonding of building curtain walls: In the construction field, it can bond glass and metal frames, providing weather resistance and earthquake resistance. However, attention should be paid to the impact of its heat-curing property on construction efficiency.

5. Medical Equipment and Food Industry

Hygienic sealing: It complies with medical-grade material standards (non-toxic, low volatility) and can be used for sealing medical equipment and bonding components of food processing machinery to ensure hygiene and safety.

Resistance to steam sterilization: It maintains stable performance after high-temperature steam sterilization (e.g., 121℃ autoclaving), suitable for long-term use of medical equipment.

Technical Characteristics and Advantages

One-component design: No mixing required; it can be directly extruded for use, simplifying the construction process.

Rapid heat curing: It can be fully cured in only 1 hour at 120℃, significantly improving production efficiency.

High durability: It passes salt spray tests (no rust after 240 hours under JIS Z 2371 standard) and long-term high-temperature aging tests, making it suitable for outdoor or high-corrosion environments.

Low-stress bonding: It remains elastic after curing (Shore hardness A 40), avoiding stress damage to precision components.

Usage Precautions

Surface treatment: Oil, dust, and oxides on the surface of the adherend must be thoroughly removed to ensure optimal bonding effect.

Curing conditions: The minimum curing temperature is 100℃; temperatures below this may lead to incomplete curing.

Storage requirements: It should be stored refrigerated below 10℃ to extend the shelf life (usually 6 months).

Summary

With its high-temperature resistance, high bonding strength, and adaptability to complex environments, Shin-Etsu KE-1830 has become the preferred material for high-end sealing and bonding in the industrial field. Its core value lies in solving the problem of performance degradation of traditional adhesives under extreme conditions, making it particularly suitable for scenarios with high reliability requirements such as electronics, automotive, and aerospace.