Zytel
Zytel is a trademark owned by DuPont and used for a number of different high strength, abrasion and impact resistant nylon formulations, often with varying degrees of fiberglass, from 13% to 60%, added in for additional stiffness[1]. Some of the grades are homopolymer nylon66, other copolymers with nylon6 repeat units, and further grades involving rubber toughening are available.
[edit] Properties
The properties of Zytel will vary with the specific formulation. Formulation Zytel HTN 35% Glass Reinforced Resin, consisting of 35% glass fiber by weight, has a tensile strength of around 30kpsi and a flexural modulus of 1500kpsi under room temperature conditions. Zytel also offers good chemical resistance to common chemicals such as motor oil, transmission fluid, and methanol, and shows little thermal expansion[2]. Other additives or treatments may be used to increase toughness, wear resistance, and temperature tolerance[3].
[edit] Uses
- Zytel is often used for folding knife handles; Gerber Legendary Blades and SOG Specialty Knives (among many others) use fiberglass-filled versions of Zytel in many of their lightweight pocket knives
- Zytel is also used for the projectile in some less lethal 12 gauge shotgun shells
- Zytel is used in the receiver and frame in many arms manufactured by Kel-Tec CNC Corporation.
