Carbon Fiber Bundles Research Articles

Electrochemical Solid Polymer Electrolyte Coating of Carbon Fibres for Structural Sodium Micro Batteries

Carbon fibre based structural batteries combine energy storage and mechanical load transfer into a single material. Multifunctional materials as such are attractive alternatives to today's state-of-the-art monofunctional batteries, particularly in mobile applications where the battery pack constitutes parasitic weight that decreases range. Structural batteries take advantage of carbon fibres’ ability to store electrochemical energy by insertion of alkali-ions and their outstanding mechanical properties, making them an inherently multifunctional material. A key aspect to structural batteries is an electrolyte that can transfer mechanical load and ions between the electrodes. A solid PEG-based solid polymer electrolyte (SPE) has been synthesised for Li chemistries in previous work, utilising electrochemical grafting to produce thin homogeneous films covering individual carbon fibres [1].This method remains unexplored for Na based chemistries as an attractive, abundant and cheap alternative to Li. This paper demonstrates this single step, energy efficient electrochemical process to produce a chemisorbed, dense and homogeneous SPE around single carbon fibres for Na chemistries. Propylene glycol methyl ether acrylate is grafted and polymerised onto single fibres using sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) as supporting electrolyte. The synthesised SPE is characterised using various techniques and the electrochemical properties of the coated carbon fibre electrodes were investigated by cycling the electrodes in a battery setup. The results show a dense SPE that covers each individual fibre in a carbon fibre bundle and the electrodes cycle stably against Na metal with capacities that are on par with findings in previous work [2]. In a step towards realising single carbon fibre battery cells, this method holds the potential to produce fully solid state structural batteries, by using sustainable chemicals, that are scalable from micrometer dimensions and allow for novel battery design.[1] Leijonmarck, S., Carlson, T., Lindbergh, G., Asp, L.E., Maples, H. and Bismarck, A., 2013. Solid polymer electrolyte-coated carbon fibres for structural and novel micro batteries. Composites Science and Technology, 89, pp.149-157.[2] Harnden, R., Peuvot, K., Zenkert, D. and Lindbergh, G., 2018. Multifunctional performance of sodiated carbon fibers. Journal of The Electrochemical Society, 165(13), p.B616.

Effect of ICCP on conductivity properties of carbon fiber bundles and CFRCM

The effectiveness of carbon fabric reinforced cementitious matrix (CFRCM) in impressed current cathodic protection (ICCP) and structural strengthening (SS) of reinforced concrete (RC) structures has been verified. Meanwhile, due to the piezoresistive effect of carbon fibers, CFRCM has been developed as a self-monitoring sensor for structural health monitoring (SHM). However, the conductivity properties of CFRCM and carbon fiber under ICCP will be subject to performance degradation due to anodic reaction, which may have adverse effects on their role in SHM, and the degradation in seawater sea-sand (chlorine-containing environments) is still unknown. In this study, simulated ICCP tests were carried out on carbon fiber bundles in different solution environments and mortar environments to investigate the influences and mechanisms of different ICCP current densities, electrification durations, electrification environments, fiber lengths, and mortar types on conductivity properties of carbon fiber bundles and CFRCM. The prediction models for resistance were established based on a large number of experimental measurements. The results show that changes in resistance of carbon fiber bundles and CFRCM under ICCP exhibit two-stage characteristics of linear growth and rapid growth. The presence of chloride ions in seawater sea-sand environments can share polarization currents, reduce electrode potential, and slow down carbon fiber degradation. The degradation rates of carbon fiber bundles under four electrification environments, from fast to slow, are as follows: normal mortar, seawater sea-sand mortar, saturated Ca(OH)2 solution, and saturated Ca(OH)2 solution prepared with seawater. This study aims to promote the development of CFRCM materials with the multifunctional properties of ICCP-SS and SHM, and to achieve rational utilization of seawater and sea-sand.

Design and experimental verification of an S-shaped continuous weft insertion system for soft–hard blended preform narrow channels

To address the limitations of the existing weft insertion technology in inserting carbon fiber bundles into the narrow channels of soft–hard blended preform, a proposed solution is to use a continuous weft insertion trajectory based on an S-shaped path for narrow channels. A weft insertion system that meets the process requirements has been designed. The analysis of the functional requirements for the continuous weft insertion system has identified five key nodes for the system, and the motion paths of each mechanism have been established. Through design methods such as analytical methods, rigid inversion methods, and mechanical analysis, the modular design of the system and the planning of the timing sequence for multiple mechanisms have been completed. Weft insertion experiments have been conducted on a continuous weft insertion system experimental platform, and the results demonstrate that the weft insertion system can effectively introduce carbon fiber bundles into the narrow channels, forming the expected S-shaped continuous weft insertion trajectory. This study verifies the feasibility of the designed weft insertion system and the accuracy of the continuous weft insertion theory, providing a viable solution for continuous weft insertion in the narrow channels of soft–hard blended preforms.

Multiscale Analysis of Impact-Resistance in Self-Healing Poly(ethylene-co-methacrylic acid) (EMAA) Plain Woven Composites.

A study combining multiscale numerical simulation and low-velocity impact (LVI) experiments was performed to explore the comprehensive effects on the impact-resistance of EMAA filaments incorporated as thermoplastic healing agents into a plain woven composite. A multiscale micro-meso-macro modeling framework was established, sequentially propagating mechanical performance parameters among micro-meso-macro models. The equivalent mechanical parameters of the carbon fiber bundles were predicted based on the microscopic model. The mesoscopic representative volume element (RVE) model was crafted by extracting the actual architecture of the monolayer EMAA filaments encompassing the plain woven composite. Subsequently, the fiber and matrix of the mesoscopic model were transformed into a monolayer-equivalent cross-panel model containing monolayers aligned at 0° and 90° by local homogenization, which was extended into a macroscopic equivalent model to study the impact-resistance behavior. The predicted force-time curves, energy-time curves, and damage profile align closely with experimental measurements, confirming the reliability of the proposed multiscale modeling approach. The multiscale analysis reveals that the EMAA stitching network can effectively improve the impact-resistance of plain woven composite laminates. Furthermore, there exist positive correlations between EMAA content and both impact-resistance and self-healing efficiency, achieving a self-healing efficiency of up to 98.28%.

Unidirectional fibre reinforcement of syntactic metal foams

Abstract Metal matrix syntactic foams are porous structures where the porosity is formed by introducing a porous filler material into the metal matrix. They have low density and absorb significant energy during compression but cannot withstand tensile stress. The main goal of this study was to apply unidirectional fibre reinforcement to syntactic metal foams. Therefore, a lightweight double-composite structure that can be utilised against tensile load and has advantageous properties during compression was created. Copper-nickel coated carbon fibre bundles were used as unidirectional long fibre reinforcement, lightweight expanded clay aggregate particles as filler material and Al99.5 aluminium as matrix material. The samples were created with vacuum infiltration and formed into cylindrical tensile specimens. Quasi-static tensile tests were carried out on the specimens and fibre trusses, and quasi-static compression was applied on specimens in the parallel and perpendicular direction to the unidirectional fibre truss.

Characterization of a conductive hydrogel@Carbon fibers electrode as a novel intraneural interface

Peripheral neural interfaces facilitate bidirectional communication between the nervous system and external devices, enabling precise control for prosthetic limbs, sensory feedback systems, and therapeutic interventions in the field of Bioelectronic Medicine. Intraneural interfaces hold great promise since they ensure high selectivity in communicating only with the desired nerve fascicles. Despite significant advancements, challenges such as chronic immune response, signal degradation over time, and lack of long-term biocompatibility remain critical considerations in the development of such devices. Here we report on the development and benchtop characterization of a novel design of an intraneural interface based on carbon fiber bundles. Carbon fibers possess low impedance, enabling enhanced signal detection and stimulation efficacy compared to traditional metal electrodes. We provided a 3D-stabilizing structure for the carbon fiber bundles made of PEDOT:PSS hydrogel, to enhance the biocompatibility between the carbon fibers and the nervous tissue. We further coated the overall bundles with a thin layer of elastomeric material to provide electrical insulation. Taken together, our results demonstrated that our electrode possesses adequate structural and electrochemical properties to ensure proper stimulation and recording of peripheral nerve fibers and a biocompatible interface with the nervous tissue.

Damage mechanism and bending properties degradation of aviation composite honeycomb sandwich structures under laser irradiation

Damage mechanism and bending properties degradation of aviation composite honeycomb sandwich structures are studied under different laser conditions in this paper. Firstly, the damage test of composite honeycomb sandwich structures is conducted. Temperature field and ablation process during laser irradiation are analyzed. Damage morphology and mechanism are verified. Secondly, the influence of laser damage on the bending properties of composite honeycomb panels is studied. Progressive damage process and failure mechanism of honeycomb structures during loading are explored by digital image correlation (DIC) and strain trend. The results show that the temperature at the center point of front surface reaches more than 2000 °C within 1 s under the laser irradiation, while the temperature of back surface exhibits hysteresis. The ablation hole is funnel-shaped and has severe delamination. In the heat affected zone (HAZ), resin matrix has been basically sublimated and oxidized, leaving only carbon fiber bundles and some residual carbon. The honeycomb core in this area has been completely carbonized and deformed. During bending process, the honeycomb core breaks firstly, and strain appears peak at both crack ends, leading the crack extend along both sides. The ultimate load of damaged specimen is 2.35kN, which has a 42.26 % drop compared to that of healthy specimen 4.07kN. Bending properties of specimen are significantly degraded by laser damage.

Tree-inspired fabric-based of carbon fiber photothermal evaporator for highly efficient water-evaporation desalination

Recently, researchers have increasingly focused on interfacial solar evaporation technology due to its potential in addressing freshwater scarcity through its cleanliness, efficiency, cost-effectiveness, and environmental friendliness. However, developing salt-resistant evaporation devices with high performance using simple processing methods remains challenging. This study presents a novel core-spun composite yarn, utilizing Tencel as the core for its water absorption properties and wrapping it with carbon fiber bundles known for their excellent light absorption capabilities. A photothermal composite yarn fabric evaporation device with a bridge-like structure, utilizing carbon fiber and crafted through three-dimensional braiding technology, was developed. The inclusion of polystyrene foam ensures stable floating and excellent thermal insulation, enhancing thermal management efficiency of the evaporator. Results indicate a stable evaporation rate of 1.71 kg·m−2·h−1 under 1 sun illumination and effectively prevents salt crystallization during prolonged simulated seawater evaporation, specifically with a 10 wt% NaCl solution. This research lays a valuable foundation for designing uncomplicated, efficient, and scalable solar water evaporation devices.

3D spacer fabric structured airflow channel for enhanced solar desalination with efficient multi-energy harvesting

Solar steam generation (SSG) is a sustainable way to drive seawater desalination and wastewater purification with green environmental energies including solar radiation, ambient heat, and airflow. Airflow is ubiquitous in outdoor environments, however, the utilization of airflow for accelerated evaporation through structure engineering remains unclear. Herein, environmental energies are efficiently utilized in an integrated way with the rational design of 3D spacer fabric. Carbon fiber bundles with broadband photothermal conversion ability and Tencel yarns with superior hydrophilicity are fabricated into the 3D spacer fabric. The stereoscopic airflow channel, wide evaporation surface area, and separated layers are constructed to optimize airflow pathways. Heat loss is reduced through the accelerated evaporation cooling effect. Extra ambient heat is harvested for cold evaporation by efficient airflow utilization. The evaporation rate of 3D spacer fabric reaches 5.15 kg·m−2·h−1 under a convective airflow of 3.5 m·s−1, which is twice the rate of traditional plain fabrics. The outstanding salt resistance is realized due to the separate design of photothermal and water supply layers as well as the continuous water circulation. The structural engineering of condenser devices is also investigated for enhanced airflow utilization. Overall, this work presents an effective and comprehensive multi-energy harvesting strategy to achieve rapid and durable SSG for practical clean water production.

CNT modified chopped ultra-thin CF/PET tapes reinforced PET thermoplastic composite laminates with elevated interfacial properties and ultra-low porosity

Carbon fiber (CF) reinforced thermoplastic polyethylene terephthalate (PET) laminate composites with light weight, high strength, excellent damage tolerance, and recyclability have garnered increasing attention. However, the weak interface between inert CF and PET resin, as well as the difficulty of impregnating the considerably high melt viscosity of PET matrix into the CF bundles, have impeded further development of the CF/PET composites. To settle the challenge, the chopped ultra-thin CF tapes (thickness of 40 μm and length of 30 mm) reinforced PET composite laminates were prepared by mechanical spreading technology, following with random stacking and molding technology via the plasma treatment and PET/carbon nanotubes (CNT) sizing. As the results, the optimal interlaminar shear strength (ILSS), tensile strength, and Young's modulus of the chopped ultra-thin CF tapes reinforced PET composites (with 1.0 wt% CNT) achieved 42.4 MPa, 780.9 MPa, and 47.8 GPa, which increased by 41.9 %, 40.7 %, and 68.9 %, respectively, compared to unmodified CF/PET composites. Especially, the porosity of the composites reached 0.68 %, decreased by 84.3 %. Therefore, combining the easy infiltrability of chopped ultra-thin CF tapes technology and the multiscale interfacial reinforced strategy (plasma treatment and PET/CNT sizing) is an effective way to reduce the porosity and enhance the mechanical properties of the thermoplastic composites.

Effect of ICCP on bond performance and piezoresistive effect of carbon fiber bundles in cementitious matrix

The purpose of this study is to lay a foundation for developing a triple-functional system of impressed current cathodic protection, structural strengthening, and structural health monitoring (ICCP-SS-SHM) regarding carbon fabric reinforced cementitious matrix (CFRCM) material performance, and promote the utilization of seawater sea-sand resources to alleviate the shortage of freshwater river sand resources. In recent years, CFRCM, ICCP, and the piezoresistive effect have been widely studied in strengthening reinforced concrete structures, corrosion protection of steel reinforcement, and SHM, respectively. This study used two types of matrix materials: normal matrix (ISO standard sand) and seawater sea-sand matrix. The effect mechanism of the ICCP procedure on the bond performance degradation of CFRCM with the two types of matrix and the bond performance differences between them were investigated through carbon fiber bundle tensile tests and CFRCM bundle pull-out tests. Prediction formulas for bond performance were established based on the different charge densities, mechanical parameters, and resistance parameters, respectively. The piezoresistive effects of CFRCM with the two types of matrix after the ICCP procedure and the effect of ICCP on the piezoresistive effect were analyzed. The seawater sea-sand environment has a positive impact on delaying the degradation of CFRCM by ICCP.

Effect of ICCP on tensile performance of carbon fiber bundles in seawater sea-sand cementitious matrix

Impressed current cathodic protection (ICCP), carbon fabric reinforced cementitious matrix (CFRCM) composites, and piezoresistive effect have been widely studied in delaying steel bar corrosion, strengthening steel-reinforced concrete structures, and structural health monitoring, respectively. In this study, the effect mechanism of the ICCP procedure on the tensile performance degradation of CFRCM bundles with the two types of matrix (normal matrix (i.e., sand conforming to ISO standard) and seawater sea-sand matrix), as well as the tensile performance differences between them, were investigated through carbon fiber bundle tensile tests and CFRCM bundle tensile tests. The piezoresistive effects of CFRCM with the two types of matrix after the ICCP procedure and the effect of ICCP on the piezoresistive effect were analyzed. Prediction formulas for the tensile performance were established based on the different charge densities. Based on the dual functionality of carbon fiber strengthening and self-sensing, this study lays a foundation for the development of a triple-functional system of impressed current cathodic protection, structural strengthening, and structural health monitoring (ICCP-SS-SHM). The study indicates that seawater sea-sand positively influences the delay of CFRCM degradation through ICCP. This is advantageous in tackling the issue of scarce freshwater river sand resources.

Microstructure and properties of C/C and C/SiC composites brazed by reactive infiltration of Si[sbnd]Zr filler alloy

The joint between C/C composites and liquid silicon infiltrated-C/SiC composites was achieved using a Si10Zr (at. %) eutectic filler. The microstructure and mechanical properties of joints at different brazing temperature and holding time were characterized. The results showed that the melting filler infiltrated along the carbon fiber bundle gaps and formed SiC reaction layers at both interfaces. On the side of C/SiC composites, the residual silicon in the original base material dissolved into the molten Si10Zr alloy during the brazing procedure. The phenomenon resulted in intense infiltration of the liquid filler into C/SiC composites, which formed a unique C/SiC-Si-ZrSi2 multiphase-ceramic gradient structure. Excessive filler was squeezed out around the joint seam to form a fillet. The shear strength of the joint reached up to 37 MPa, with fracture occurrence in both substrates and the joint seam. Reliable bonding between C/C and C/SiC dissimilar composites was finally achieved.

Multi-scale collaborative prediction of optimal configuration for carbon fiber woven composites based on deep learning neural networks

Since carbon fiber woven composite panels contain complex fiber bundle structures, the aim of this paper is to investigate the factors influencing the macro-equivalent properties and topological flexibility of composite panels resulting from variations in fiber bundle configuration. Firstly, the structural topology optimization design of carbon fiber composite plates was achieved using a multi-scale modeling approach with the variable density method. Nonlinear relationships between carbon fiber bundle configuration parameters and macroscopic equivalent properties, as well as macroscale topological flexibility, were determined using deep learning methods, respectively. The maximum error in the predicted values of the deep learning network model does not exceed 0.5% when compared with the results of the finite element calculations. In addition, utilizing deep learning networks to predict macro-equivalent properties of composites can significantly decrease computational time. The impact of varying the number of filaments in fiber bundles and the spacing of the fiber bundles on the flexibility of the topology was determined using a deep learning network. The optimal topological flexibility, along with its corresponding fiber bundle spacing and number of fiber bundle filaments, are globally searched within the design domain using an adaptive genetic algorithm. The study in this paper can provide a reference for designing fiber bundle configurations of composites for practical applications.

Novel application of dual-nozzle 3D printer for enhanced in-situ impregnation 3D printing of dry continuous fiber reinforced composites

This work reported a novel two-stage in-situ impregnation method for additively manufacturing dry fiber bundles reinforced polymer composites using a commercial dual-nozzle 3D printer. This process allowed simultaneous manufacturing of both continuous fiber prepreg filaments and continuous fiber reinforced polymer composites (CFRPCs). Initially, it was demonstrated that the two-stage in-situ impregnation method significantly enhanced the printing geometrical accuracy of specimens filled with rigid continuous carbon fiber. Subsequently, the tensile performance of CFRPCs, filled with twisted continuous ramie yarns and unwound continuous carbon fiber bundles, printed using single-stage and two-stage in-situ impregnations was compared. Significantly, the two-stage in-situ impregnation method facilitated a marked improvement in the tensile strength and modulus of CFRPCs. This improvement proved the enhanced impregnation effect of fibers, validating the effectiveness of the proposed two-stage in-situ impregnation approach for dry fiber bundles reinforced composites.

Carbon fiber-sampling combined flame ionization mass spectrometry for direct analysis of drugs in oral fluid

Drug-impaired driving poses a significant risk of collisions and other hazardous accidents, emphasizing the urgent need for simple and rapid roadside detection methods. Oral fluid, as an easily collectible and non-invasive test material, has gained widespread use in detecting drug-impaired driving. In this study, we have devised a method for direct sampling using a carbon fiber bundle combined with flame ionization mass spectrometry. The essence of this method lies in the synergy between the adsorption properties of carbon fiber and the plasma characteristics of the flame. Leveraging the strong adsorption capabilities of the carbon fiber bundle allows for the use of a minimal sample size (<100 μL) during sampling, presenting a distinct advantage in the roadside inspection and sampling process. Throughout the flame ionization process, proteins and salts within the oral fluid matrix adhere well to the carbon fiber bundle, while small molecule targets can be efficiently desorbed and react with charged species in the flame, leading to ionization. The results demonstrate the successful development of carbon fiber-sampling combined flame ionization mass spectrometry, capable of qualitative and quantitative analysis of drugs in oral fluid without the need for sample pre-treatment. Its quantitative capabilities are sufficient for real sample detection, providing an effective analytical method for the roadside detection of drugs in oral fluids.

A pull-out equivalent telescopic layered failure model of carbon fiber bundles in seawater sea-sand cementitious matrix

Based on the excellent mechanical properties and piezoresistive effect of carbon fiber, carbon fiber reinforced cementitious matrix (CFRCM) has been used in the strengthening and self-monitoring research of reinforced concrete (RC) structures. In this study, the assumptions of the telescopic layered model theory of CFRCM were refined. The factors influencing the piezoresistive effect of carbon fibers were subsequently analyzed. Simultaneously, the resistance calculation theory for the pull-out process of CFRCM bundles was established by combining the parallel circuit theory. Based on the above theories, a pull-out equivalent telescopic layered failure model of carbon fiber bundles in the cementitious matrix was developed, considering the trilinear cohesive material law (CML) and the piezoresistive effect. Pull-out tests on carbon fiber bundles in both freshwater standard sand and seawater sea-sand matrices were conducted. This model was successfully used to simulate the piezoresistive effect during the pull-out process of CFRCM bundles with two matrices and different embedded lengths. The number of fiber filaments in each layer, the rupture damage of the fiber filaments during the loading process, and the degree of matrix infiltration into the carbon fibers were calculated. This work lays the foundation for advancing the development of structural strengthening and structural health monitoring.

A comprehensive dimensional analysis of waste‐derived reinforcements in interface interactions with semi‐bio‐based PA6,10 composites

AbstractThis study elucidates interfacial interactions in semi‐synthetic polyamides by applying dimensional analysis to graphene derived from waste sources like coffee, tires, and chopped carbon fiber resulting in lightweight and high‐performance composites. Graphene from tires in platelet form (GNP), graphene from coffee in spherical form (CWC), and carbon fiber bundles (CF) were incorporated into Polyamide 6,10 (PA6,10) with high‐shear mixer by examining the optimum loading ratio for each reinforcement through interface characterization. At the same loading ratios, specific flexural properties are significantly enhanced when employing high aspect ratio CF reinforcement, while the platelet structure of GNP is more effective in improving specific tensile properties. Additionally, the spherical graphene of CWC exhibited the highest crystallinity, along with CF. In addition, sustainable PA6,10‐based compounds reinforced with waste‐derived materials were compared to commercial synthetic PA6‐based compounds with similar thermal and mechanical characteristics. The research revealed that the addition of 20 wt% CWC to the PA6,10 matrix outperforms commercial synthetic compounds by providing lightweight in terms of specific tensile. The findings of this study demonstrate that effectively incorporating waste‐derived reinforcing materials into semi‐synthetic composites presents a promising strategy to improve performance and serve as viable alternatives to commercial products through tailored waste‐derived reinforcement, particularly in applications that require lightweight and robust load‐bearing capabilities.Highlights Waste‐based reinforcements are sustainable alternatives to synthetic materials Size and aspect ratio of reinforcements give varying strengthening mechanisms Tailorable mechanical performance through different waste‐based reinforcements Waste‐based reinforcements offer lightweight for automotive composites Lightweight and sustainable composites can replace commercial products

Effect of sizing agents on tensile properties of carbon fiber filament wound structures

In order to evaluate the effects of sizing agents on the wettability, strength loss, and properties of final filament wound structures during filament winding of carbon fibers, three types of sizing agent based on epoxy, epoxy + polyester, and epoxy + polyurethane were used to treat carbon fibers, the surface properties of carbon fiber samples after treatment were evaluated using SEM, infrared spectroscopy, dynamic contact angle analysis, and interlaminar shear strength (ILSS) test, the strength loss caused by fiber damage during filament winding was quantitatively analyzed, and the strength properties of the filament wound structures were characterized by NOL ring test. The results showed that the sizing agent treatment only slightly improved the surface free energy and ILSS of carbon fibers, but it had obvious influence on the strength loss rate of carbon fiber bundles. Added polyester or polyurethane in epoxy-based sizing may improve its protective effect for carbon fiber, and thus decrease strength loss during winding process, result in better tensile properties of carbon fiber filament wound structures.

Study on tensile strain of carbon fiber triaxial woven fabric/thermoplastic polyurethane flexible textile composites

AbstractIn order to study the possibility of flexible textile composites as space deployable devices, carbon fiber triaxial woven fabric and thermoplastic polyurethane were compounded by hot‐pressing. The section shape of the carbon fiber triaxial woven fabric flexible textile composites was observed by scanning electron microscopy. After hot‐pressing at 120°C for 45 min, the thermoplastic polyurethane is best combined with carbon fiber bundle, and fully melted to form a protective layer, which also ensured the deformability of carbon fiber triaxial woven fabric/thermoplastic polyurethane flexible textile composites. The tensile strains of flexible textile composites in the directions of 0°, 15° and 30° were analyzed by digital image correlation. The analysis was carried out from the macroscopic scale, the single cell scale, and the fiber bundle scale, combined with the strain distribution of digital image correlation in the tensile process. From the axial and radial deformation of the bundle and the force analysis of single cell, the phenomena such as strain change, trellising phenomenon, and fabric deformation during tensile were explained. When carbon fiber triaxial woven fabric is added to glass‐fiber composite, the electromagnetic reflection efficiency can be increased by 9%. The research on strain and electromagnetic reflection provided the possibility for the flexible textile composites as a space deployment device.Highlights Through the use of SEM and hot‐pressing, carbon fiber triaxial woven fabric/TPU flexible textile composites with high coverage were produced. The differences in strain distribution and deformation process throughout the CTFC tensile process at 0°, 15°, and 30° are investigated by DIC and stress analysis. Carbon fiber triaxial woven fabric (TWF) can reflect electromagnetic radiation. TWF can increase the efficacy of reflection in composites. Space deployment is a possible application of TWF.