PBT ( Polybutylene terephthalate for fiber secondary coating)
PBT is a kind of major engineering plastic, it's mainly used as optic fiber loose tube.
Property:
|
Item |
Unit |
Nominal Value |
|
Appearance |
|
Cream White, Pale Yellow Colorless & Transparent Columned Granular |
|
Density |
g/cm³ |
1.25-1.35 |
|
Moisture Content |
% |
≤ 0.1 |
|
Melting Index 250℃/2.16kg |
g/10min |
7-15 |
|
Saturated Ratio Moisture Content |
% |
≤ 0.5 |
|
Yield Strength |
Mpa |
≥ 50 |
|
Yield Elongation |
% |
5-10 |
|
Elongation at Break |
% |
≥ 100 |
|
Tensile Modules of Elasticity |
Mpa |
≥ 2100 |
|
Flexural Modules of Elasticity |
Mpa |
≥ 2200 |
|
Flexural Modules at 3.5% of Strain |
Mpa |
≥ 60 |
|
Shore Hardness HD |
|
≥ 70 |
|
Melting Point |
°C |
220-230 |
|
Coefficient of Linear Expansion (23-80℃) |
10-4K-1 |
≤ 2.0 |
|
Compatibility with Filling Petroleum Jelly Yield Strength Yield Elongation at Break |
Mpa % |
≥ 50 ≥ 100 |
|
Volume Resistance |
Ω•cm |
≥ 1X1015 |
Package:900KG/Bag or 25KG/Bag
