Synthetic polymer fibres 01
Synthetic polymer fibres 01
Typical properties of selected fibres
| Nylon | Polyester | Polyacrylonitrile | Polyethylene | |
| Specific Gravity (g cm-3) |
1.14 | 1.38 | 1.18 | 0.96 |
| Tenacity (cN/dtex) — Dry — Wet |
3.0—4.5 2.7—4.0 |
3.0—6.0 3.0—5.8 |
3.8—4.1 — |
2.0—4.0 — |
| Tensile Strength (Mpa) |
850—950 | 1100 | 350—550 | 175—600 |
| Elongation at break (%) |
16—19 | 13 | 8—15 | 10—20 |
| Shrinkage at: 150°Ca (%) 100°Cb (%) |
5—6a — |
11a — |
— — |
— 5—15b |
| Melting point (°c) |
215(6) 260(6,6) |
>230 | >230 chars | 130 |
| Absorbency (%) | 4.5 | 0.1—0.2 | <2.0 | <0.1 |
| Limiting Oxygen Index |
0.20 | 0.21 | 0.27 | — |
| Heat Resistance (°C) |
<180 | <180 | <180 | <90 |
| Flammability | moderate | moderate | low | moderate |
| Acid Resistance | poor/mod | good | good | good |
| Alkali Resistance | good | poor in strong | good | good |
| Resistance to Organic Solvents |
good | good | good | good |
| Resistance to Oxidising Agents |
good | good | good | fair |
| Biological Resistance |
good | good | good | excellent |
| Abrasion Resistance |
v. good | v. good | moderate | good |
| Resistance to Sunlight |
good | good | excellent | limited (needs stabilisation) |
| Dye Affinity | good | good | fair/good | limited |