Semi-Dull (SD) Polyester Chips
Product Introduction
Semi dull polyester chips are suitable for making the terylene filament & terylene staple fiber etc.
This kind of semi dull chips possess the characteristics of meek tonality, uniform particle size, less impurity and stable viscosity. For applying the unique process recipe and production technology, the distribution of the chip's molecular weight are centralized. So the chips are especially used to produce the fine denier filament with the excellent further processing property, chromaticity performance, high rate of final products, less rate of fiber broken.
Techncal index
Ttem |
Unit |
Index |
Test method |
|
Intrinsic Viscosity |
dL/g |
0.645±0.012 |
GB/T 14190 |
|
Melting point |
°C |
>258 |
GB/T 14190 |
|
Color value |
L |
— |
>75 |
GB/T 14190 |
b |
一 |
4±2 |
GB/T 14190 |
|
Carboxyl end group |
mmol/kg |
<30 |
GB/T 14190 |
|
DEG content |
wt% |
1.2±0.1 |
GB/T 14190 |
|
Water content |
wt% |
<0.4 |
GB/T 14190 |
|
Powder dust |
ppm |
<100 |
GB/T 14190 |
|
Agglomerate particle |
pc/mg |
<1.0 |
GB/T 14190 |