Para-aramid staple fiber sewing thread
Aromatic polyamide fibers (referred to as aramids) are synthetic fibers produced by polycondensation and spinning using aromatic compounds as raw materials. These fibers have excellent heat resistance and insulation properties, and their chemical properties are stable during use. They show strong resistance to weak acids, weak bases, and most organic solvents. The main types include poly-p-phenylene terephthalamide fiber (Poly-p-phenylene diamine terephthalamide fiber) and poly-m-phenylene isophthalamide fiber (poly-metaphenylene isophthalamides, MPIA).
Performance Parameters
Fiber Characteristics:
Linear Density: 1.44 g/cm³; long-term heat resistance and flame retardancy, limiting oxygen index: >28; long-term anti-static properties; long-term resistance to acid, alkali, and organic solvent erosion; high strength, high wear resistance, high tear resistance; no molten droplets when exposed to fire, does not produce toxic gases; fabric thickens when burned, enhancing sealing, does not crack.
Thermal Properties:
Long-term service temperature: 180 °C; axial thermal expansion coefficient: -2 × 10^(-6) / K; thermal conductivity: 0.048 W/(m·K); decomposition temperature: 427-482 °C.
Mechanical Properties:
Strength: 3.6 GPa; tensile modulus: 131 GPa; elongation at break: 3%; breaking strength: 23 g/d.
Picture
Specifications
|
Model
|
Fracture strength
|
Diameter
|
Length/Kilogram
|
Weight/Roll
|
|---|---|---|---|---|
|
20S/2
|
2.2 kgf
|
0.25 mm
|
16500 m
|
200 g
|
|
20S/3
|
3 kgf
|
0.3 mm
|
11000 m
|
200 g
|
|
30S/2
|
1.2 kgf
|
0.2 mm
|
26500 m
|
200 g
|
|
30S/3
|
1.8 kgf
|
0.25 mm
|
15000 m
|
200 g
|
|
40S/2
|
1 kgf
|
0.18 mm
|
31000 m
|
200 g
|
|
40S/3
|
1.6 kgf
|
0.2 mm
|
21000 m
|
200 g
|
Personal Protection and Labor Protection
Bulletproof Equipment: Used for sewing military protective gear such as bulletproof vests, bulletproof helmets, and stab-resistant vests.
Firefighting Suits: High-temperature resistance makes it an ideal sewing material for flame-retardant protective items like firefighting suits, fire curtains, and high-temperature resistant gloves.
Welding Gloves / Suits: Resistant to high-temperature sparks and friction, protecting workers’ safety.
Cut-resistant Gloves: Labor protection gloves that need to be cut-resistant in industrial fields such as glass processing and metalworking.
Industrial Manufacturing
High-temperature filtration materials: Used for sewing dust filter bags (such as in cement plants and power plants), capable of withstanding long-term high-temperature environments (above 200°C).
Special ropes and conveyor belts: Such as high-strength, wear-resistant ropes for mining and ships, as well as reinforced sewing for industrial conveyor belts.
Rubber product reinforcement: Tire cords, rubber reinforcement materials, etc.
Military and Defense
Military Equipment: Sewing of high-performance equipment such as bulletproof vehicle bodies, armor plates, and parachutes.
Tactical Equipment: Equipment that requires wear resistance and tear resistance, such as tactical backpacks and military boots.
Sports and Outdoor Products
Sports equipment: climbing ropes, fishing lines, kite strings, and other high-strength demand scenarios.
Outdoor gear: sewing of tents and backpacks, resistant to friction and tearing in harsh environments.
Aerospace and High-End Technology
Spacecraft Components: Structural sewing for high-temperature resistant composite materials, such as rocket engine nozzles.
High-Temperature Sealing Materials: Sealing reinforcement for aircraft brake discs and high-temperature pipelines.
Home Textiles and Technical Textiles
High-temperature resistant home textiles: sewing of household items such as fireproof mattresses and flame-retardant curtains.
Automotive interiors: sewing threads for high-temperature resistant car seats, airbags, and other components.
