What is Kevlar fabric

What is Kevlar fabric?

Aramid is an organic fabric that belongs to the aromatic polyamide family of materials. Aramid fabrics have many distinguishing features that distinguish them from other fabric types.

This fabric has several unique functions. Here in this article, we will discuss all things Kevlar fabrics. We will also highlight the step-by-step process of producing Kevlar fabric. So keep reading this article to know more about Kevlar fabric.

Kevlar is a material with extraordinary strength and tensile strength. Thanks to this method, fibers are created that include the use of interchain bonds in addition to the cross-linking chemical bonds that stick to the chains, and the fibers are strong. Hewlett-Packard (HP) designed it for high-performance industrial and advanced applications. Kevlar has very high tensile strength.

It has a unique combination of strength, high stiffness, toughness, and thermal stability. In terms of tensile strength, Kevlar is more than 10 times stronger than steel. In addition to its excellent heat resistance and flexibility, Kevlar also has excellent ballistic and cut/puncture resistance. Currently, several different Kevlar fibers are being developed to meet the needs of various end users.

Types of Kevlar

Kevlar – tire cord

Kevlar 29 – Multipurpose Yarn

Kevlar 49 – high modulus yarn

Kevlar 68 – medium modulus yarn

Kevlar 100 – dyed yarn

Kevlar 119 – high elongation yarn

Kevlar 129 – high tenacity yarn

Kevlar 149 – Ultra High Modulus Yarn

What is Kevlar made of?

Kevlar is a synthetic material made from the compound poly-p-phenylene terephthalamide. Carry out low-heat polycondensation in alkyl amino solvents such as dimethylacetamide, and then carry out condensation reaction. The polymer resulting from this reaction system must be separated from the rest of the system by precipitation with water, neutralization, followed by washing and drying.

To produce Kevlar fibers or yarns, polymer and sulfuric acid solutions are exposed to dry-jet wet spinning. Melt spinning is not used because the Kevlar polymer dissolves before reaching liquid temperature.