Clear Colorless Liquid
MASIL SF 202 is a vinyl-terminated silicone polymer that may be heat-cured or room temperature cured (RTV). It is normally cured with 2 to 4% by weight of MASIL XL-1 Crosslinker system and a catalyst at 20 ppm that must be incorporated into the polymer, not the crosslinker. This polymer vulcanizes via an addition reaction and does not produce volatile gases during curing. MASIL SF 202 can be used as the base polymer in silicone elastomers to provide a noncorrosive protective shield against water, dirt and other harmful contaminants in mold-making rubber and electrical / electronic encapsulation applications.
Product Details
| Attribute | Value |
|---|---|
| Typical Properties | |
| Appearance | Clear Colorless Liquid |
| Silicone Content (%) | 100 |
| Color (APHA) | 30 Max. |
| Solids | 98.5 – 100.0 |
| Viscosity | 180 – 250 |
| Shelf Life (Mos) | 24 |
| Flash Point (°F, PMCC) | > 300 |
| Specific Gravity (25°C) | 0.960 |
| Refractive Index | 1.4035 |
| Iodine Value (%) | 5.80 – 7.00 |
| Water (%) | 0.10 Max. |
| Application Group | Application | Description |
|---|---|---|
| Adhesives | Electrical and Electronic Adhesives | In electrical and electronic adhesives. It’s used as the base polymer in silicone elastomers to provide a noncorrosive protective shield against water, dirt and other harmful contaminants. |
| Electronics | Encapsulants | Highly recommended, Used as the base polymer in silicone elastomers to provide a noncorrosive protective shield against water, dirt and other harmful contaminants in encapsulants. |
| Plastics | Mold Making | Used as the base polymer to provide structural properties in mold making. |
| Rubber | Mold Making | Used in auto polishes; Provides wetting and gloss. |
| Textile & Leather | Textile Softener | Used as the base polymer to provide structural properties in mold making. |