Aramid fibers are composed of fine yellow filaments, approximately ten microns in diameter, which are assembled into threads to create aramid tapes. These tapes, made from continuous para-aramid fibers, boast superior mechanical and thermal properties, enabling them to withstand continuous temperatures of 350°C and peak temperatures up to 400°C. Due to their exceptional resistance to tearing, abrasion, and various chemicals, aramid tapes are highly durable and stable across numerous applications.
In the glass industry, aramid tapes are particularly valued for their uniformity and consistent weaving. Additionally, they play a crucial role in the production of fire-resistant materials and serve effectively as conveyor belts.
Aramid braid tapes offer notable versatility, being useful for edge protection, connectors between components (such as the upper and lower parts of a canoe), and reinforcement at corners. They are also well-suited for engine and aggregate construction.
One significant advantage of aramid braid tapes over woven aramid tapes is their ability to cover a larger width. Stretching or compressing a braided tape affects both its width and fiber angle, allowing a single tape to be used for composite components with multiple layers. The fiber angle for such applications should range between 30° and 60°. UD threads can reinforce the tape in the 0° direction.
Aramid tapes are narrow widths of woven fabric with a strong selvage edge that prevents fraying and unraveling. This design eliminates the need to cut wider fabrics, improving both accuracy and productivity. The tightly woven structure offers greater uniformity compared to non-woven fabrics, and the tapes are highly flexible, making them ideal for wet layup, vacuum bagging, and resin infusion manufacturing processes.
Treated to be compatible with most thermosetting resins, these tapes ensure optimal adhesion between the fiber surface and the resin. Despite being termed „tapes,“ they do not have an adhesive backing and exhibit the same properties as woven aramid fabrics.
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