Properties of multi-layered polymer composites with Vectran fiber reinforcement

Komorek, A.; Szczepaniak, Robert; Przybyłek, Paweł; Krzyżak, Aneta; Godzimirski, Jan; Rośkowicz, Marek; Seremak, Dominika

doi:10.1016/j.compstruct.2020.113045

Cited by 13 publications

(7 citation statements)

References 8 publications

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“…The most advanced composite solutions are based on carbon fibers or hybrid fiber systems and epoxy resin as the matrix compound [ 52 , 61 , 62 ], while for sandwich structures, part of the manufactured structures can be made from metal (steel and aluminum) in the form of a thin sheet or foam [ 63 , 64 , 65 , 66 ]. The obtained results indicate that this kind of sandwich materials cannot be used in high-demand applications, such as the aeronautic industry [ 67 , 68 ] or automotive and sports products [ 69 , 70 , 71 ].…”

Section: Resultsmentioning

confidence: 99%

“…It is quite clear that for this type of puncture test, it is only possible to compare the effects caused by the striking dart. Some other studies used instrumentalized equipment in the form of drop-weight hammers also for LCP fiber-reinforced composites [ 52 , 72 ]. However, the main tested materials are still solid thermoset-based laminates.…”

Section: Resultsmentioning

confidence: 99%

“…Their properties resemble other super-strength fibers such as Kevlar (aramid fibers) or Dyneema/Spectra (polyethylene fibers). They are often used in the production of anti-ballistic fabrics [ 51 , 52 , 53 ]. In the case of materials developed as part of the discussed work, the key aspect for srLCP composites was their high impact resistance and low density, similarly to the matrix polymer’s density.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Manufacturing Concept of LCP Fiber-Reinforced GPET-Based Sandwich Structures with an FDM 3D-Printed Core

2022

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The presented research was focused on the development of a new method of sandwich structure manufacturing involving FDM-printing (fused deposition modeling) techniques and compression molding. The presented concept allows for the preparation of thermoplastic-based composites with enhanced mechanical properties. The sample preparation process consists of 3D printing the sandwich’s core structure using the FDM method. For comparison purposes, we used two types of GPET (copolymer of polyethylene terephthalate)-based filaments, pure resin, and carbon fiber (CF)-reinforced filaments. The outer reinforcing layer “skins” of the sandwich structure were prepared from the compression molded prepregs made from the LCP (liquid-crystal polymer)-fiber fabric with the GPET-based matrix. The final product consisting of an FDM-printed core and LCP-based prepreg was prepared using the compression molding method. The prepared samples were subjected to detailed materials analyses, including thermal analyses (thermogravimetry-TGA, differencial scanning calorimetry-DSC, and dynamic thermal-mechanical analysis-DMTA) and mechanical tests (tensile, flexural, and impact). As indicated by the static test results, the modulus and strength of the prepared composites were slightly improved; however, the stiffness of the prepared materials was more related to the presence of the CF-reinforced filament than the presence of the composite prepreg. The main advantage of using the developed method is revealed during impact tests. Due to the presence of long LCP fibers, the prepared sandwich samples are characterized by very high impact resistance. The impact strength increased from 1.7 kJ/m2 for pure GPET samples to 50.4 kJ/m2 for sandwich composites. For GPET/CF samples, the increase is even greater. The advantages of the developed solution were illustrated during puncture tests in which none of the sandwich samples were pierced.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Novel Manufacturing Concept of LCP Fiber-Reinforced GPET-Based Sandwich Structures with an FDM 3D-Printed Core

2022

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“…Vectran of aromatic polyester is used as a current and less practised material for composite applications [37]. A flexible composite made with Vectran fiber is due to its ability to experience low radius bending under a repeated bending cycle by protecting the fiber strength than a comparatively high-performance liquid crystal polymer para-aramids [31].…”

Section: Flexible Compositementioning

confidence: 99%

“…Vectran from liquid crystal polymer is considered as a strong and stiff fiber and can easily produce wire with minimal width and heaviness and for the production of pipe under high pressure. Besides, to keep the optimal signal quality by protecting the optical cable system from resizing, only minimal creep of Vectran fibres is required [37,38].…”

Section: Ropes and Cable Productionmentioning

confidence: 99%

Article Review on Vectran-Super Fiber from Thermotropic Crystals of Rigid-Rod Polymer

Limeneh

Yilma

2021

Journal of Engineering

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According to the economic and environmental perspective, multifilament Vectran, yarn spun from liquid crystal polymer, is important because of its quite simple processing during spinning in a wide range of injection moulding, extrusion moulding, and melt spinning. Vectran fiber is an aromatic polyester spun from a liquid crystal polymer in a melt extrusion process. This process orients the molecules along the fiber axis, resulting in a high tenacity fiber, and Vectran melts at 330°C. Heat treatment can improve and vary the tensile strength of Vectran fiber. On average, tensile strength for Vectran is 26 grams/denier (grouped as a high tenacity grade) and the strength of the fiber is maintained after several flexing and bending actions. Abrasion resistance of Vectran is even higher than a similarly sized aramid yarn. In addition, the original dimensions are maintained under variance of temperature with negligible creep and shrinkage. Vectran fiber, characterized by its golden color, high strength and modulus, thermal stability at high temperatures, low creep, and good chemical stability, can be used in many various industries starting from ropes and cables to profound sea survey and military products.

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