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Lightweight, Flexible, and Strong Kevlar® Rope and Cables

Article from DuPont™

DuPont™ Kevlar® brings together the strength, temperature resistance, lightness, and flexibility manufacturers need for their ropes and cables for land, sea, and space applications.

For more than two decades, DuPont™ Kevlar® brand aramid fiber has provided a lightweight, flexible, and dimensionally stable means of helping to strengthen ropes and cables used across several industries, from mountaineering ropes and fishing lines to electro-mechanical cables and fine gauge cables for electronic device applications such as mobile phone cables, computer power cords, USB cords, and MP3 earphone cables. Ropes and cables made of Kevlar® help deliver performance and value to customers in the fine gauge cable industry by providing excellent robustness, fatigue resistance, shrinkage, and durability. The fiber’s resistance to chemicals and temperature extremes makes it an ideal component for ropes and cables under severe loads in harsh environments, from the bottom of the ocean to the surface of Mars. Ropes made with Kevlar® brand fiber appear in a variety of constructions, including 4-strand, wire lay, braided and parallel yarns, and strand ropes. They range in diameter from 1mm to 250mm, and have been strength-rated up to 1500 tons.

On land

Architects, engineers, and builders incorporate cables of Kevlar® into light suspension bridges because Kevlar® is stronger and lighter than steel on an equal-weight basis, and does not corrode. Cables made of Kevlar® help enable elevators t use to use smaller pulleys than they would have to use for steel cables, and subsequently require less energy and space to operate. Additionally, it is possible to have longer cable lengths because of the lightweight, high-strength properties.

At sea

In seawater, ropes with Kevlar® are up to 95% lighter than steel ropes of comparable strength. Salvage ropes, ice safety barriers, towed and stationary arrays, umbilical hoses, fiber optic cables, escape chutes, orbital straps, and tow ropes have incorporated Kevlar® to help increase strength and reduce weight. Lightweight rope constructions based on Kevlar® fiber help enable rescue services to handle and deploy equipment far more easily — often saving valuable seconds.

In space

Kevlar® fiber has proven that it is strong enough to survive the extreme forces and temperature fluctuations of space travel. When the Mars Pathfinder landed on the surface of Mars, ropes made of Kevlar® helped secure the inflated landing cushions (which were themselves reinforced with Kevlar® fiber) that allowed it to complete its 40-million-mile journey fully intact and ready to explore the planet. Kevlar® is also used in the space shuttle to help protect against impacts from orbital debris.

KEVLAR® BRAND

Better, Stronger and Safer with Kevlar® Fiber

It’s about daring bigger, pushing limits, being courageous, and helping keep people safe —DuPont™ Kevlar®.

DuPont™ Kevlar® aramid fiber allows people to Dare Bigger. It’s used to make a variety of clothing, accessories, and equipment safe and cut resistant. It’s lightweight, durable and extraordinarily strong. Yes, it’s best known for its use in ballistic and stab-resistant body armor, as Kevlar® brand aramid fiber continues to evolve and allow heroes to be heroes. But it’s also on the ski slopes, the switchback trails, in demanding desert terrain, even the outer limits of space.

Invented almost 50 years ago, DuPont™ Kevlar® continues to take on new challenges, with our scientists continuously innovating and working on a range of new opportunities through collaborations with communities, industrial manufacturers, and governments. Together we’re bringing the strength, durability and performance of Kevlar® to new frontiers. Kevlar® aramid fiber is pushing boundaries and defying obstacles every day. Kevlar® is allowing everyone to Dare Bigger™.

KEVLAR® FIBERS

Light in Weight, High in Performance — Kevlar® Fiber

Versatile and strong, Kevlar® fiber is more than just a series of threads. DuPont™ Kevlar® fibers are used in a variety of clothing, accessories, and equipment to help make them safer and more durable. With five times the strength of steel based on an equal weight basis, it’s the go-to fiber for protective apparel and accessories.

Kevlar® fiber and filament come in a variety of types, each with its own unique set of properties and performance characteristics for different protection needs.

Kevlar® AP

A next-generation fiber that offers advanced performance, value, and increased design flexibility in many applications.

Kevlar® 29 (K29)

The original family of product types of Kevlar®, having similar tensile properties with many deniers and finishes. These yarns are used in ballistic applications, ropes and cables, protective apparel such as cut-resistant gloves, in life protection uses such as helmets, vehicular armoring, and plates, and as rubber reinforcement in tires and automotive hoses.

Kevlar® 49 (K49)

High-modulus type used primarily in fiber optic cable, textile processing, plastic reinforcement, ropes, cables, and composites for marine sporting goods and aerospace applications.

Kevlar® 100

Producer-colored Kevlar® yarns, used in ropes and cables, tapes and strappings, gloves and other protective apparel, and sporting goods.

Kevlar® 119

Higher-elongation, flexible-fatigue–resistant yarn types found in mechanical rubber goods, such as tires, automotive belts, and hoses.

Kevlar® 129

Lightweight, high-performance, and high-tenacity type of yarns used in motorcycle racing gear, life protection accessories, ropes and cables, and high-pressure hoses used in the oil and gas industry.

Kevlar® KM2

Woven into fabric meeting performance requirements for helmets and vests for military and high-performing UDs for spall liners.

Kevlar® KM2 Plus

High tenacity, high toughness, and finer denier fiber used in vests and helmet for both military and law enforcement officers.

Kevlar® AP

Kevlar® AP for Advanced Performance helps dramatically improve cost-effectiveness and design flexibility to manufacturers helping  them build leaner, more robust consumer and industrial products.

 

The DuPont Oval Logo, DuPont™, The miracles of science™ and all products denoted with ® or ™ are trademarks or registered trademarks of E. I. du Pont de Nemours and Company or its affiliates.

 

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