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The outer layer of the heat shrink waterproof cap is a radiation cross-linked polyolefin base layer, with an inner coating of waterproof sealing adhesive. It is primarily used for the ends of insulated and corrosion-resistant steel pipe foam jackets, connecting the outer jacket and inner steel pipe. It serves as a seal, waterproofing, and corrosion protection during the transportation, storage, and use of insulated steel pipes.
| Property | Performance | Standard | ||
| Backing | ||||
| Tensile Strength MPa | 19 | GB/T 1040 | ||
| Elongation % | 550 | GB/T 1040 | ||
| Vicat Softening Point | 96 | GB/T 1633 | ||
| Dielectric Strength MV/m | 35 | GB/T 1408.1 | ||
| Volume Resistivity Ω·m | 4.0×1015 | GB/T 1040 | ||
| Heat Aging (150°C, 21d) |
Tensile Strength MPa | 17 | GB/T 1040 | |
| Elongation % | 450 | |||
| Hot Melt Adhesive | ||||
| Softening Point °C | 118 | GB/T 4507 | ||
| Shear Strength 23°C MPa | 3.4 | GB/T 7124 | ||
| Shear Strength Tmax °C MPa | 0.09 | GB/T 7124 | ||
| Peel Strength 23°C N/cm |
to Primer Steel | 98 | GB/T 2792 | |
| to PE | 96 | |||
| Peel Strength Tmax °C N/cm |
to Primer Steel | 17 | GB/T 2792 | |
| to PE | 16 | |||
| Address: | 1288 Shexi Road, Beishe Community, Fenhu Town, Wujiang District, Suzhou City, Jiangsu Province, China |
| Telephone: | (0512) 63241242，63248702 |
| E-mail: | overseas@dasheng.com |
| Website: | www.dasheng.com |
