Para aramid sewing thread is a high-performance sewing material with unique properties and wide applications. The details are as follows:

Definition and Composition

- Para aramid sewing thread is made from 100% para-aramid staple fiber or blend yarn. Para-aramid fiber, short for poly paraphenylene terephthalamide fiber, is formed by the polymerization of terephthaloyl chloride and paraphenylenediamine. It is also known as aramid 1414, Kevlar, Twaron, etc.

Properties

- High Strength and Toughness: It has extremely high tensile strength, much higher than ordinary sewing threads like cotton and polyester. It can bear heavy pulling force without breaking easily, and has high modulus, which means it has excellent dimensional stability and is not easy to deform under force.

- Outstanding Heat Resistance: It can be used continuously in the temperature range from -196°C to 204°C. It starts to carbonize and decompose above 530°C and shows no decomposition or melting at 500°C. Even after being exposed to 200°C for 100 hours, its tenacity remains 75%.

- Good Chemical Resistance: It is resistant to most acids, alkalis and organic solvents. It is hardly affected by exposure to solvents, fuels, lubricants and salt water, and can maintain its performance in harsh chemical environments.

- Flame Retardant: With a limiting oxygen index of ≥28%, it is difficult to burn in an open flame and will self-extinguish, playing an important role in preventing the spread of fire.

- Anti-aging: It has good anti-aging properties and can maintain stable performance for a long time.

Applications

- Aerospace and Military: It is used for sewing aircraft interiors, parachutes, military uniforms, and various aerospace and military equipment that require high strength and heat resistance.

- Protective Clothing: It is suitable for making high-temperature work clothes, firefighting suits, welding suits and other protective clothing to protect workers from high temperatures and flames.

- Automotive Industry: It can be used to sew automotive airbags, seat belts, and high-temperature-resistant parts in engines to improve the safety and durability of automobiles.

- Industrial Fields: It is often used in sewing high-temperature filter materials, high-temperature gaskets, and heat shield materials.

- Medical Textiles: It can be applied in some special medical textiles, such as sutures that require high strength and biocompatibility.

- Sports Equipment: It is used in the production of some high-end sports equipment, such as sewing parts of bicycles, skateboards and other equipment that require high strength and durability.

Specifications

Common specifications of para aramid sewing thread include Ne 20/3, Ne 30/3, Ne 40/3, Ne 50/3, Ne 5/4, etc.