Meta-aramid sewing yarn is a kind of high-performance sewing material. The following presents a detailed account:

Definition and Composition

Meta-aramid sewing yarn is made from 100% meta-aramid staple fiber through the ring spinning process. Meta-aramid is a type of aromatic polyamide fiber, short for poly isophthalic meta-phenylenediamine fiber, and is also known as aramid 1313, Nomex, Conex, etc. Its main raw materials are isophthaloyl chloride (IPC) and meta-phenylenediamine (MPD).

Properties

- Flame Retardant: It has an oxygen index of ≥28%, is difficult to burn in an open flame, and will self-extinguish without melting or dripping.

- High Temperature Resistance: It can be used for a long time at temperatures up to 260°C. Even after being exposed to 260°C for 900 hours, it still retains 70% of its strength.

- Chemical Resistance: It is resistant to various acid and alkali solvents, showing good chemical stability in harsh corrosive media.

- High Strength: It has high tensile strength and wear resistance, and the elongation at break is relatively high, which can ensure the high strength of the sewn products.

- Good Thermal Stability: It has no softening, shrinkage, or melting droplets under high temperatures.

- Low Shrinkage: It experiences minimal shrinkage, which helps to maintain the integrity of stitched seams over time.

Applications

- Protective Clothing: It is used to sew high-temperature work clothes, firefighting suits, combat suits, welding suits, fire-resistant gloves and other protective clothing.

- Decorative Materials: It can sew flame-retardant decorative materials such as curtains and seat covers for cars, trains, and airplanes.

- Filtration and Insulation Materials: It is often used in sewing high-temperature filter materials, welding spark-proof materials, fire escape blankets, and car seat inner coverings.

- Automotive and Aerospace Industries: In the automotive industry, it is used for sewing airbags and upholstery. In the aerospace industry, it is used in the fabrication of aircraft interiors, seatbelts, and safety harnesses.

Specifications

The yarn size of meta aramid sewing yarn generally ranges from 4s to 60s, such as 4s, 8s, 10s, 20s, 30s, 40s, 50s, 60s, etc. Common specifications also include Ne 30s/3 and Ne 40s/3.