PBT COMPOUNDS
Our quality PBT is the best material to make a loose tube for fiber-optic cables. These cables rely on the fiber to transmit information. In order to protect the fiber from getting damaged when the cable is inserted, it is required to put a piece or some pieces of fiber into a loose tube filled with petroleum jelly to let the fiber move freely inside the tube made out of PBT.
Technical Characteristics Table:
| Number | Item | Unit | Result |
| 1 | Density | g/cm³ | 1.25-1.35 |
| 2 | Melt Index (250°C, 2160g) | g/10 min | 7.0-15.0 |
| 3 | Water Content | % | ≤0.1 |
| 4 | Saturated water absorptivity | % | ≤0.5 |
| 5 | Yield Strength | Mpa | ≥50 |
| Yield Elongation | % | 5.0-10 | |
| Elongation at Break | % | ≥100 | |
| Tensile modules of elasticity | Mpa | ≥2100 | |
| 6 | Flexural Modulus | Mpa | ≥2200 |
| Flexural Strength at 3.5% Bending Strain | Mpa | ≥60 | |
| 7 | Melt Point | °C | 210-230 |
| 8 | Shore Hardness Hp | / | ≥70 |
| 9 | Cantilever beam impact strength | ||
| 23°C | KJ/m² | ≥5.0 | |
| Minus 40°C | ≥4.0 | ||
| 10 | Coefficient of linear expansion (23-80°C) |
10-4K-1 | ≤2.0 |
| 11 | Volume Resistance | Ω•cm | ≥1x1015 |
| 12 | Heat deflection temperature | ||
| 1.8MPa | °C | ≥55 | |
| 0.45MPa | ≥170 | ||
| 13 | Compatibility with Filling Compound | ||
| Yield Strength | Mpa | ≥50 | |
| Elongation at Break | % | ≥100 | |
| 14 | Appearance | Cream white, pale yellow, colorless & transparent columned granular | |