Pepin United Company of the United States develops novel reinforcing yarn or tow technology
It is understood that Pepin United Company in the United States has developed a novel reinforced spinning yarn or tow technology called DiscoTex. The specific method is: cut the existing reinforced spinning yarn or tow into segments, arrange them to form longer discontinuous tows, and then add them to the arranged continuous fibers and outer cladding to form DiscoTex filaments. bundle. The purpose of continuous fibers and wrapped fibers is to facilitate handling during the fabric process, but they can also be used as matrix materials. If continuous fibers are not needed in subsequent processes, they can be removed, leaving only discontinuous fiber materials. This technology allows for the low-cost and particularly convenient production of complex-shaped conformal material structures. Its working principle is to weave discontinuous filament bundles into a fabric. When forming and fitting the material, the fabric can extend in the reinforcing direction to cover complex shapes. However, currently commercially available fabrics generally distort or shrink when covering complex shapes. Using Pepin’s technology, complex-shaped parts with good mechanical properties can be manufactured at low cost.
Because this kind of reinforcement material is discontinuous, they can extend along the reinforcement direction, making it easier to form complex-shaped products than continuous fiber fabrics. DiscoTex fabrics can be made into prepregs, used for infusion molding, or preforms without impregnation. Simple initial form parts such as pipes, flat plates, and troughs can be reshaped into more complex shapes, such as microbead-stiffened plates, flanged pipes, and curved troughs. The elongation properties of DiscoTex fabric can speed up the molding of complex-shaped products while maintaining fiber orientation and fiber volume fraction, and eliminating labor-intensive fabric cutting, configuration and other operations during laying.
DiscoTex technology is suitable for any reinforcing fiber used in the lamination material industry today, including carbon fiber, glass fiber, ceramic fiber, etc. Fabrics can be impregnated with thermoset resins, but manufacturers recommend laminating thermoplastics (such as nylon 6) with DiscoTex fabrics. Demonstration parts include: energy-absorbing anti-collision rails for general cars made of E-glass fiber/polyethylene terephthalate (PET) DiscoTex fabric, military aircraft parts that are 35% cheaper than continuous fiber parts, etc. The company is also making tows laminated with discontinuous carbon fibers and continuous nylon fibers, called CD (continuous/discontinuous) tows. The company also reports that DiscoTex can be used in the pultrusion process.
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