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The Application of Fumed silica in RTV-2 and LSR

June 06, 2024

Aerosil Fumed Silica Display

Silica Applications And Coatings

### Application of Fumed Silica in RTV-2 Silicone:

1. **Mold Making:** RTV-2 silicone with fumed silica is commonly used in mold-making applications due to its ability to create flexible and durable molds with high dimensional accuracy.

2. **Prototyping:** Fumed silica-reinforced RTV-2 silicones are ideal for creating prototypes of various products and components, as they can capture intricate details and be used for multiple casting cycles.

3. **Industrial Sealants:** RTV-2 silicone with fumed silica Hydrophilic is utilized in the production of industrial sealants and gaskets due to its excellent adhesion properties, flexibility, and resistance to temperature extremes.

4. **Art and Crafts:** Fumed silica-containing RTV-2 silicones find applications in art and crafts for making molds of sculptures, statues, and other artistic creations.

### Application of Fumed Silica in Liquid Silicone Rubber (LSR):

1. **Medical Devices:** LSR formulations incorporating fumed silica are widely used in the manufacturing of medical devices such as seals, valves, and tubing due to their biocompatibility, clarity, and consistency.

2. **Automotive Parts:** Fumed silica in LSR is employed for producing automotive parts like gaskets, seals, and connectors, where durability, temperature resistance, and long-term performance are essential.

3. **Electronics Encapsulation:** LSR with fumed silica is utilized in electronics encapsulation applications to protect sensitive electronic components from environmental factors like moisture, dust, and vibrations.

4. **Food Contact Applications:** Fumed silica-containing LSR is suitable for food-grade applications like kitchenware, baking molds, and food processing equipment due to its inert nature and compliance with food safety regulations.

### General Characteristics and Advantages:

- **Reinforcement:** Fumed silica enhances the mechanical properties of both RTV-2 and LSR, improving strength, tear resistance, and dimensional stability.
  
- **Thickening and Thixotropy:** It acts as a thickening agent in RTV-2 silicone and a thixotropic agent in LSR, enabling precise application and enhancing flow and mold-filling properties.
  
- **Surface Quality:** Fumed silica contributes to better surface quality in both types of silicone, reducing defects and enhancing finish.

By leveraging the advantages of fumed silica in RTV-2 silicone and LSR formulations, manufacturers can create high-performance products across a range of industries with diverse applications and requirements.

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