Core essential difference: chemical structure (the source of countless changes)
Aramid 1313 (meta-aramid): Its chemical name is poly (m-phenylenediamine). The amide bond in its molecular chain is connected to the “meta position” of the benzene ring. This makes the molecular chains serrated, with good flexibility and weak intermolecular forces, but excellent thermal stability.
- Core features: Natural high temperature resistance, flame retardancy, and insulation. He is an excellent ‘fire guard’.
Aramid 1414 (para-aramid): Its chemical name is poly (p-phenylenediamine). The amide bond in its molecular chain is connected to the “para position” of the benzene ring. This makes the molecular chains very straight and regular, capable of forming highly crystalline structures, and the molecular chains are bonded through strong hydrogen bonds.
- Core features: innate ultra-high strength and high modulus. He is an excellent “bulletproof and anti cutting defender”.
Comprehensive Performance Comparison Table
| Feature | Aramid 1313 (meta aramid) | Aramid 1414 (para aramid) |
| Core strengths | Durable heat resistance and flame retardancy | Ultra high strength/modulus, impact resistance |
| Continuous use temperature | ~220°C | ~160°C – 180°C |
| Extreme Oxygen Index | >28% (flame retardant) | ~29% (flame retardant) |
| Strength/modulus | Equivalent to ordinary synthetic fibers | More than 5 times that of steel wire |
| Thermal shrinkage rate | Extremely low, stable size | High, requiring heat setting |
| Texture and Characteristics | Similar to cotton or wool, fluffy and insulated | Similar to tight steel wire, tough and rigid |
| Common colors | Naturally pale yellow, can be made white | Iconic golden color |
The difference and application of short fibers and long fibers (reflected in 1313 and 1414)
What are spun fibers and filament fibers?
- Filament: a continuous fiber that is smooth, uniform, and has high strength.
- Spun: After cutting the long thread, it is spun like cotton yarn, fluffy, fluffy, soft, and well insulated.
1. Aramid 1313 (meta aramid) spun
- Clothing/Insulation/Filtration(Pursuing thermal insulation and softness)
2. Aramid 1313 (meta aramid) filament
- Sewing thread/high-strength fabric(Pursuing strength and durability)
3. Aramid 1414 (para aramid) spun
- Gloves/stab proof clothing/brake pads(Pursuing wear-resistant composite)
4. Aramid 1414 (para aramid) filament
- Bulletproof/rope/fiber optic cable reinforcement(Pursuing ultimate strength)
