12 Years Transmission Belts Coating Customized Factory.
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Foam Sponge coating waterproof test Please refer to the conclusion and video on the detail page.
Foam Sponge coating waterproof test,Please refer to the conclusion and video on the detail page.
| Comparison of water absorption of common foams | |||
| Foam type | water absorption (24h immersion) | structural characteristics | waterproof / moistureproof performance |
| PE foam | <3% | closed cell structure, low breathability | ★★★★★ (excellent) |
| EVA foam | 3%-8% | Semi-open cell structure, medium breathability | ★★★★☆ (medium) |
| PU foam | 5%-15% | open cell structure, high breathability | ★★★★☆ (surface treatment required) |
| CR foam | 10%-20% | open cell/ semi-open cell | ★★★★ (waterproof coating required) |
| Silicone foam | <1% | closed cell/ microporous | ★★★★★ (fully waterproof) |
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