Kevlar®
Also known as: Para-aramid, Aramid fibre
High-strength para-aramid fibre from DuPont™ with exceptional tensile strength and heat resistance for protective apparel.
Description
Kevlar® is the registered trade name for para-aramid fibres from the chemical company DuPont™ and was industrially introduced in 1971. Chemically it is poly-para-phenylene terephthalamide with highly oriented molecular chains, giving extreme tensile strength.
The fibre is about five times stronger than steel weight-for-weight (specific strength), flame retardant; thermal decomposition starts around 425–475 °C. Tensile strength varies by grade: Kevlar 29 ≈ 2,920 MPa, Kevlar 49 ≈ 3,000 MPa, Kevlar 149 ≈ 3,400 MPa. Kevlar® is used to make cut-resistant gloves, ballistic vests, motorcycle apparel, firefighting gear, armour laminates and technical reinforcements. In apparel the fibre is mostly used to reinforce stress points (knees, shoulders, palms).
- Aramid fibre (para-aramid)
- Extremely high tensile strength
- Flame retardant, temperature stable up to about 500 °C
- Used in protective and safety apparel
Kevlar® is UV-sensitive and therefore usually needs a protective cover or coating when exposed outdoors.
Properties
| Fibre class | Para-aramid |
|---|---|
| Manufacturer | DuPont™ (1971) |
| Tensile strength | approx. 3600 MPa |
| Use | Protective apparel, ballistic protection |
Related product categories
Sources & references
3- DuPont Kevlar dupont.com https://www.dupont.com/brands/kevlar.html
- Wikipedia: Kevlar Wikipedia — Freie Enzyklopädie https://de.wikipedia.org/wiki/Kevlar
- OEKO-TEX OEKO-TEX Association https://www.oeko-tex.com/
