Carbon Fiber Tow Spreading Technology and Mechanical Properties of Laminate Composites

Park, Sung Min; Kim, Myung Soon; Choi, Yoon Sung; Lee, Eun Soo; Yoo, Ho Wook; Chon, Jin Sung

doi:10.7234/composres.2015.28.5.249

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…Karl Meyer (China) Co., LTD [ 20 ] uses the conductivity of CF to provide heat by electrifying a CF bundle, thereby removing the sizing agent from the CF surface. Park et al [ 21 ] successfully achieved the expansion of 12 K carbon fiber from 7 mm to 20 mm by employing a self-designed tow spreading device under optimized process conditions. The mechanical widening method has the characteristics of simple device structure and low cost, but if the friction is too large, it is easy to damage the CF tow and reduce the mechanical properties of the prepreg prepared later.…”

Section: Introductionmentioning

confidence: 99%

Study on Thin Lamination of Carbon Fiber Based on Mechanical Broadening

Chen,

Hui,

Zhu

et al. 2024

Materials

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Carbon fiber has excellent mechanical properties and plays an important role in modern industry. However, due to the complexity of the carbon fiber widening process, the industrial application of carbon fiber is limited. By designing the carbon fiber widening equipment of automaton, the relationship between the widening width of carbon fiber and the process parameters is studied, and the optimum developing process parameters are obtained, to improve the performance of carbon fiber composites to a certain extent. In this study, the widening process of carbon fiber was studied based on the mechanical broadening method. Firstly, an automatic broadening equipment was designed, and the effects of the initial tension, the number of straight rods, the number of convex rods, and the drawing speed on the widened width during the broadening process were discussed. The widening effect was evaluated by SEM imaging and mechanical testing. At the same time, the factors affecting the broadening width and broadening defects during the broadening process were analyzed, and the optimal broadening process parameters were obtained. The results showed that within a specific range, a higher initial tension, a greater number of convex rods, and an appropriate speed resulted in relatively smaller damage to the broadening of carbon fibers. Through the design of automatic broadening, this experiment explores optimal broadening process parameters, provides a reference for the improvement of the carbon fiber broadening process and further promotes large-scale industrial applications of carbon fiber.

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Section: Introductionmentioning

confidence: 99%

Study on Thin Lamination of Carbon Fiber Based on Mechanical Broadening

Chen,

Hui,

Zhu

et al. 2024

Materials

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“…In addition, woven fabric using the spread tow can reduce the resin rich zone inside the composite material due to the thin tow thickness. Furthermore, studies have shown that applying the fabric to composite materials results in limiting cracks under fatigue load and improving fatigue life [25][26][27][28][29]. In terms of product value, carbon fiber spread tow can improve product value due to its beautiful appearance and can obtain various mechanical properties introduced above, therefore it is mainly used as a surface layer of composite materials.…”

Section: Introductionmentioning

confidence: 99%

Study of Damage Prediction of Carbon Fiber Tows Using Eddy Current Measurement

Roh,

Kwon,

Lee

et al. 2023

Polymers

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When manufacturing fiber-reinforced composites, it is possible to improve the quality of fiber steel fire and reduce the number of cracks in the finished product if it is possible to quickly identify the defects of the fiber tow. Therefore, in this study, we developed a method to identify the condition of carbon fiber tow using eddy current test (ECT), which is used to improve the quality of composite materials. Using the eddy current detection sensor, we checked the impedance results according to the condition of the CF tow. We found that the materials of the workbench used in the experiment greatly affected the ECT results, so it is necessary to use a material with a non-conductive and smooth surface. We evaluated the impedance results of the carbon fiber at 2 mm intervals using the ECT sensor and summarized the impedance results according to the fiber width direction, presenting the condition of the section as a constant of variation (CV). If the condition of the carbon fiber tow was unstable, the deviation of the CV per section was large. In particular, the deviation of the CV per section was more than 0.15 when the arrangement of the fibers was changed, foreign substances were formed on the surface of the fibers, and damage occurred in the direction of the fiber width of more than 4 mm, so it was easy to evaluate the quality on CF tow.

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“…Currently, some high-end technologies are required to produce ultra-light and ultrathin fibre tow [3,4]. For carbon fibre bundles consisting tens of thousands of filaments (12k-48k), some methods have been developed to make a thin ply, such as mechanical spreading, ultrasonic spreading, airflow disturbing, electrostatic spreading [5,6], etc. The mechanical fibre spreading is the most used method in industry, and can achieve good effect of spreading by wrapping the fibre bundle through a series of pins.…”

Section: Introductionmentioning

confidence: 99%

Experiments and simulation of the spreading behavior of fibre bundle in pneumatic spreader

Niu¹,

Ning²,

Zhang³

et al. 2022

J. vibroeng.

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Fibre spreading before impregnation process has great importance for production of non-woven fabrics. Thousands of filaments can be transported and spread by airflow in a pneumatic chamber. To better understand the lateral-spreading mechanism of the system, the generation and evolution of lateral dragging forces applied on fibre bundle are demonstrated through experiments and simulations. with the CFD model of the spreader and discrete element method (DEM), the spreading behavior of the filaments in the bundle are simulated. By parametrically analyzing the characteristics of fractal airflows, the influence of design parameters on the fractal airflow is analyzed and optimized. The simulation results are in good agreement with the experimental data. The width of the bundle has been widened almost 10 times, which has improved by 100 % compared with traditional mechanical spread method.

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Carbon Fiber Tow Spreading Technology and Mechanical Properties of Laminate Composites

Cited by 6 publications

References 4 publications

Study on Thin Lamination of Carbon Fiber Based on Mechanical Broadening

Study on Thin Lamination of Carbon Fiber Based on Mechanical Broadening

Study of Damage Prediction of Carbon Fiber Tows Using Eddy Current Measurement

Experiments and simulation of the spreading behavior of fibre bundle in pneumatic spreader

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