Everything You Need to Know About Dyneema or DCF (Dyneema Composite Fabric)

Qu'est ce que le Dyneema ?

What is Dyneema?
Dyneema is a composite material made from Cuben Fiber, a polyethylene monofilament arranged in a crisscross pattern and laminated between two thin layers of polyester, without being woven. This process gives Dyneema its unique properties. Originally developed for manufacturing sails for marine use, the material quickly attracted interest in windsurfing, rigging, aerospace, and, of course, the outdoor industry. This interest stems from the material's many qualities, including:

• Strength: At equal weight, a Dyneema thread is 15 times stronger than a steel thread and is highly resistant to abrasion. Moreover, it does not deform over time or under tension and does not crease like Kevlar, for example.
• Lightness: Take the iconic two-person tent by Zpacks, the Duplex, as an example—it weighs only 525 grams. This explains its popularity among ultralight hikers and demanding backpackers who aim to optimize their pack weight.
• Waterproofing: Using the Zpacks Duplex tent as an example again, the ground sheet has a rating of 20,000 Schmerber, equivalent to a 20-meter water column. The outer fabric is rated at 15,000 Schmerber, or a 15-meter water column. Thanks to its resistance to deformation, the fabric remains taut, preventing water pockets from forming. However, the downside of this waterproofing is condensation buildup in single-wall tents, though this issue also affects other materials used in tent manufacturing.

Despite its impressive qualities, Dyneema does have some drawbacks, which, though few, are worth mentioning:

• High Cost: The production of Dyneema is mechanically complex and very expensive. Unless major brands adopt this material and produce it on a large scale, it will remain relatively rare and costly.
• Relative Fragility to Punctures: For instance, Zpacks advises thoroughly cleaning the spot where you set up your tent. Twigs, pine needles, and sharp objects can puncture and damage the fabric. Using a footprint (a protective groundsheet) to safeguard the tent's bathtub floor is often recommended. Many users opt for a Tyvek sheet for this purpose.

To maximize the lifespan of Dyneema equipment, it is crucial to use it respectfully and avoid deploying it in unsuitable terrains to prevent premature wear and damage.