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Para-aramid filament is a high-performance fiber formed from para-phenylene terephthalamide polymer. It is also called poly-para-phenylene terephthalamide fiber. It is often referred to as aramid 1414 in business.
Thermal insulation materials, optical fiber reinforcement materials, electrical insulation materials, cable wrapping, etc.
| Variety | Line Density(dtex） | Line Density Deviation Rate(%) | Breaking Strength(cN/dtex) | Elongation at Break(%) | Modulus(Gpa) | Hot Air Shrinkage(190℃ 15min)/% | Thermal Decomposition Temperature(℃) |
| 629T | 933~1670 | ±3 | ≥23.5 | 3.5~4.5 | 90±10 | ≤0.2 | ＞537.8 |
| 629 | 933~1670 | ±3 | ≥22.5 | 3.5~4.5 | 90±10 | ≤0.2 | ＞537.8 |
| 529R | 660~2775 | ±3 | ≥20.5 | 3.5~4.5 | 90±10 | ≤0.2 | ＞537.8 |
| 529S | 110~3300 | ±3 | ≥19.0 | 2.8~4.5 | 90±10 | ≤0.2 | ＞537.8 |
| 539 | 1580~8050 | ±3 | ≥19.0 | 2.0~3.5 | 120±10 | ≤0.2 | ＞537.8 |
Para-aramid filament is characterized by high strength and low density. Its specific strength is 5 to 6 times greater than that of high-quality steel, while its specific modulus is 2 to 3 times that of steel or glass fiber. It also exhibits excellent thermal stability, with a thermal shrinkage rate of just 0.2% at 190°C, a thermal decomposition temperature exceeding 537.8°C, and a limiting oxygen index of ≥29%. With a density of 1.44g/cm³, it offers superior performance under extreme conditions.
For instance, para-aramid fiber protects small and fragile optical fibers from elongating when subjected to tension, making optical cables stronger and more durable, able to withstand extreme temperatures and withstand attacks from electrical discharges, lightning, ice, snow, earthquakes and other potential natural hazards, ensuring reliable optical transmission performance.
High Strength: Para-aramid filament has extremely high tensile strength, far exceeding traditional fiber materials such as cotton, nylon, and polyester.
High Temperature Resistance: It can still maintain its mechanical properties at higher temperatures, has good thermal stability, and can be used for a long time at 220℃ or even higher temperatures.
Flame Retardancy: It has good flame retardancy, is not easy to burn, can self-extinguish after leaving the fire source, and does not produce molten droplets or release toxic gases when burning.
Chemical Stability: Good resistance to many acids, bases and organic solvents.
Electrical Insulation Properties: It has excellent electrical insulation properties and is suitable for use in the electronics and electrical industries.
Dimensional Stability: The thermal shrinkage rate is extremely low in hot environments, ensuring dimensional stability when the temperature changes.
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