Papers by Keyword: Carbon Fiber (CF)

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Authors: Xu Sheng Du, Hong Yuan Liu, Yiu Wing Mai, Ying Gang Miao
Abstract: Mono-dispersed Nickel oxide nanoparticles were directly formed on the carbon fibers through a facile in situ flame synthesis method. High magnification SEM and TEM study revealed that the nickel oxide nanoparticles have a polyhedral structure and are uniformly distributed on the surface of carbon fibers. The concentration effect of the precursor used on the growth of polyhedral nickel oxide nanoparticles on carbon fibers has been studied.
Authors: Dan Dan Li, Jian Cheng Yang, Hua Qing Wang, Kai Yang, Jian Feng Qin, Yu Bai, Shuang Hu Hu, Xiu Ming Jiang
Abstract: The design and research of weft insertion mechanism of carbon fiber multi-layer loom which has the great significance for the development of modern 3D weaving equipment. According to the special requirements of carbon fiber multi-layer weaving fabric, a multilayer weft insertion system incidental finding device is designed, which can be satisfied with multi-layer weft insertion according to the change of shedding position and different layers. In order to meet the sword belt and lifting gear running smooth, kinematic and dynamic analysis and static simulation have been done. Analysis results show that institutions satisfy all work requirements, and have important guiding significance for material selection of components.
Authors: Yong Tan, Hua Zhang, Hai Hui Liu, Li Chen Hou, Yan Mei Jin, Xing Xiang Zhang
Abstract: Pristine polyacrylonitrile (PAN)-base carbon fibers (P-CFs) was functionalized with 4-Aminobenzoic acid via ‘‘direct’’ Friedel-Crafts acylation in a mild reaction medium of polyphosphoric acid (PPA)/phosphorous pentoxid (P2O5). Fourier transform infrared spectroscopy, Raman spectroscopy, Scanning electron microscopy were applied in this study to demonstrate that PAN-base carbon fibers inherently have functional groups on their surface as a result of the reaction. The overall evidence indicates that the 4-Aminobenzoic acid functionalization of carbon fibers can be achieved without oxidation as pre-treatment. Thus, amine functionalized CFs(F-CFs)can be synthesized, without disrupting the strength of the carbon fibers.
Authors: Xiang Hong Zhang, Han Yang, Hao Zhang, Chun Yang Wang
Abstract: In this study, nylon PA6 resin was filled with carbon fibers by employing the technique of mechanical alloying and utilizing the special properties of carbon fiber. The effects of carbon fiber on the mechanical property of the nylon PA6 were also studied. From the results, filling nylon PA6 resin with carbon fiber could effectively enhance the tensile strength, the elastic modulus, the flexural strength and the flexural modulus for the material. In addition, the material shrinkage was also significantly reduced. The enhancing effects varied as CF content changed. Through comparative experiments, the optimal proportion of the addition was determined. Replacing the conventional irony back pad of military outdoor pot by this composite would not only largely reduce the load and improve the motility for the soldiers, but also ensure a better battlefield adaptability and comfort.
Authors: Jia Jia Chen, Yong Sheng Ding, Kuang Rong Hao
Abstract: Aiming to guide the manufacture process of carbon fiber and obtain high properties productions, we propose a hybrid algorithm named father-keeping immune genetic algorithm based on back propagation neural network (FKIGA-BP) as a properties prediction model. The present study also compares it with BP neural network forecasting method. It shows better search precision and convergence efficiency. The prediction results are consistent with the practical experiment data.
Authors: Hiroshi Asanuma
Abstract: A new designing concept to realize multifunctional structural material systems is proposed and demonstrated in this paper. The concept can be explained as follow: There exist a couple of competitive structural materials which normally compete with each other because of their similar and high mechanical properties, and they tend to have secondary properties which are different from each other or opposite among them. So if they are combined together to make a composite, the similar properties, normally high mechanical property, can be maintained, and the other dissimilar properties conflict with each other, which will generate functional properties. According to the proposed concept, a CFRP (carbon fiber reinforced plastics)/aluminum laminate was fabricated and its actuation capabilities and multifunctionality were successfully demonstrated. A titanium fiber/aluminum matrix composite was also fabricated, where the fiber was oxidized for electrical insulation and strengthening. This material system is very simple, but it can generate many useful functions such as heating, actuation, temperature sensing, deformation sensing and healing.
Authors: Zheng Tao Hou, Ming Qing Sun, Bin Li, Xie Dong Zhang
Abstract: A new method is proposed to prepare carbon fiber reinforced concrete (CFRC) and carbon fiber (CF)/carbon black (CB) reinforced concrete in this paper. First, CF is dispersed in 0.4% carboxymethylcellulose sodium (CMC) water solution. Then, resolvable carbon fiber surfacing mat (RCFCM) is manufactured and cut into small patches. Finally, these patches are mixed with cement, sand, gravel, CB and water. During mixing, RCFCM patches are broken up once they meet with water. So, CF is dispersed into concrete. Results show that this method is feasible. CF/CB reinforced concrete possesses low resistivity (<100 Ω•cm), high compressive strength (≥35 MPa) and low contents of CF (0.3 Vol.%) and CB (0.6 Vol.%), so it can be used as a kind of conductive concrete for melting snow and deicing applications on highways. Both the mixing time and the curing period can affect the electrical and mechanical properties of CF/CB reinforced concrete.
Authors: Jin Ping Lu, Sherly Wijaya
Abstract: The durability of marine concrete structures has long been a concern of many countries, especially in the island country of Singapore, where many structures are constructed along coastal areas. Currently, the durability of concrete under marine conditions can be enhanced by the addition of admixtures, and using high grade concrete. The FRP system can also be used to increase the durability of the concrete structures under marine conditions, by preventing the ingress of chloride ions into the structures, thereby preventing the corrosion of the steel reinforcements. In addition, the FRP system has the additional function of increasing the strength of the structure. The FRP system, which composed of the epoxy developed and carbon fiber selected in our previous paper [7], was evaluated according to various standard testing methods to get the basic technical information of the FRP system. Concrete beams and columns were wrapped with the FRP system in different design and tested to verify the effectiveness of FPR wrapping. The results showed that the performance of concrete specimens wrapped with FRP system developed could be increased up to 6 times compared to control specimens without wrapping.
Authors: Kun Qiao, Bo Zhu, Xiao Dong Gao, Cheng Rui Di, Wei Zhao, Xiang Yu Yin
Abstract: The comparison between carbon fiber reinforced different matrixes composites was studied in this work. Carbon fiber reinforced phenolic resin composite and carbon fiber reinforced benzoxazine resin composite were made by pultrusion processing. Bending strength test and charpy impact strength test were taken to characterize the toughness of different composites, and scanning electronic micro-scopy(SEM) was applied to evaluate the interfacial properties between carbon fiber and different matrixes. It was shown that compared with carbon fiber reinforced phenolic composite, carbon fiber reinforced benzoxazine composite had better performance in toughness and interfacial property. Bending strength and toughness were mainly depending on the property of matrixes, interfacial property was determined by carbon fiber and matrixes.
Authors: J.I. Song, Sung In Bae, Kyung Chun Ham, Kyung Seop Han
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