Thermal insulation sponge
Shin-Etsu Polymer offers sheets of silicone rubber insulative sponge that provide excellent thermal insulation with good mechanical strength and durability with superb heat and cold resistance.
RA-type has an exposed cell structure focussing on thermal insulation.
CT-type has a closest skin that provides additional shielding for water and air.
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| RA-type | CT-type | |
| Features | Standard type Sponge sheet Superior heat and cold tolerance Thermal inuslation characteristics |
Soft type Sponge sheet Skin layer and fine bubble structure |
| Application | Thermal insulator Packaging and sealing in automotive parts |
Thermal insulator Cushion material Water and air shielding |
| Unit | RA-type | CT-type | ||
| Relative density | 0.8 | 0.4 | water submergence | |
| Tensile strength | MPa | 24 | JIS K6301 | |
| Elongation | % | 248 | JIS K6301 | |
| Hardness | HDA | 50 | 20 | JIS K6253 (ISO48) |
| Tensile strength change | % | -25 | 225ºC, 70 hrs | |
| Compression set | % | 39 | 150ºC, 70 hrs, 50% compression |
| Type | Thickness | Sheet size |
| RA | 2 ± 0.4 3 ± 0.4 4 ± 0.5 5 ± 0.6 6 ± 0.6 8 ± 0.8 10 ± 0.8 15 ± 1.0 |
300 x 300 500 x 500 |
| CT | 1 ± 0.3 2 ± 0.4 3 ± 0.6 4 ± 0.8 5 ± 1.0 |
300 x 850 |
