Article
Polymer Science
Chenping Zhang, Yugang Duan, Hong Xiao, Ben Wang, Yueke Ming, Yansong Zhu, Fugan Zhang
Summary: This paper investigates the interlaminar bond strength of laser in-situ consolidation CF/PEEK thermoplastic composites. The results show that porosity significantly affects the interlaminar shear strength, while there is no correlation between crystallinity and interlaminar shear strength. The interlaminar shear strength in the heated tool in-situ consolidation group is significantly higher than the constant pressure in-situ consolidation group.
Article
Polymer Science
Alexander Poellinger, Thomas Koch, Stefan Krenn, Fabian Wilde, Domonkos Tolnai, Bernhard Plank, Sarah Heupl, Johannes Bernardi, Karin Whitmore, Marc Langela, Sandra Seichter, Michael Schoebel
Summary: Efficient transport of hydrogen is crucial for the widespread adoption of renewable energy. Reciprocating piston compressors with high strength non-lubricated sealing solutions are key technologies to meet the demands for gas purity and high-pressure gradients in hydrogen applications.
Article
Materials Science, Composites
Yingze Li, Nuo Xu, Hanxiong Lyu, Naiyu Jiang, Hongyan Zhang, Nan Zhou, Dongxing Zhang
Summary: In this study, a mixture sizing agent containing hydroxylated boron nitride and polyetherimide was synthesized to improve the interfacial adhesion between carbon fiber and polyetheretherketone. The synergistic effects of hydrogen bonding, 7C-7C interaction, and good compatibility were evaluated to enhance the miscibility, mechanical properties, and tribological properties of the composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Zixuan Chen, Tianyu Yu, Yun-Hae Kim, Zetian Yang, Yan Li, Tao Yu
Summary: This study aims to investigate the mechanical properties of basalt fiber reinforced polymers (BFRPs) with the incorporation of different structured nanoclays, and to improve their interfacial bonding through experimental methods. The results show that a flattened nanoclay structure is more effective for enhancing the modulus, and the inclusion of different structured nanoclays also improves the interlaminar strength and toughness of BFRPs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Zheng Liu, Xiaoli Fan, Junliang Zhang, Zhiyong Yang, Yusheng Tang, Jianwei Li, Jie Kong, Junwei Gu
Summary: The introduction of hyperbranched structure and fluorine groups in epoxy-preFHBPBO significantly improved the mechanical properties and wave-transparent performance of PBO fibers reinforced BADCy resins composites. The addition of 7 wt% epoxy-preFHBPBO increased the flexural strength and interlaminar shear strength, while reducing dielectric constant and dielectric loss compared to PBO fibers/BADCy composites. Moreover, the volume resistivity and breakdown strength were also enhanced in PBO fibers/FHBPBO-co-BADCy composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Lin Tang, Zhiyong Yang, Yusheng Tang, Junliang Zhang, Jie Kong, Junwei Gu
Summary: The copolymer membrane and AHHFP grafted onto the surface of PBO fibres enhances the interfacial strength and reduces interfacial polarization of the wave-transparent laminated composites. The resulting 6F-PBO@P-GMA fibres/modified cyanate ester composites exhibit higher flexural strength and interlaminar shear strength compared to composites with pristine PBO fibres, with excellent wave-transparency properties at X-band.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Polymer Science
Fei Chen, Ji Zhou, Haoruo Zhang, Zhengguang Heng, Yang Chen, Huawei Zou, Mei Liang
Summary: This study proposes an interesting strategy to simultaneously increase the tensile strength and fracture toughness of epoxy matrix by in-situ constructing block copolymer nanostructures. Through the optimization of nanostructures, the tensile strength and fracture toughness of epoxy matrix are increased by 19% and 236%, respectively, without lowering its Tg. The impact of block copolymers on the morphologies and transformation of nanostructures, the relationship between nanostructures and epoxy properties, and the strengthening and toughening mechanism are systematically studied. Moreover, the epoxy resins with excellent tensile properties and toughness are used to enhance the compressive and interfacial properties of CFRP composites.
Article
Polymer Science
Chao Cheng, Chenyu Zhang, Zhengguo Chen, Fei Zhou, Zeyu Sun, Muhuo Yu
Summary: A tackified PDCPD specialized for vacuum assistant resin infusion process (VARI) was developed, with epoxy resin and methyl nadic anhydride (NMA) added to improve interfacial bonding. The mechanical properties of the CFRCs based on the co-cured blends were comprehensively improved compared to those based on the PDCPD-T.
Article
Engineering, Manufacturing
F. Lionetto, F. Montagna, D. Natali, F. De Pascalis, M. Nacucchi, F. Caretto, A. Maffezzoli
Summary: This study characterized the architectural anisotropy of short fiber reinforced polymers (SFRPs) using X-ray computed micro-tomography (micro-CT) and four different morphometric methods. The obtained information on fiber orientation was used to predict elastic constants and design SFRP components, showcasing the importance of understanding fiber structure for composite material properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
Mengjin Wu, Lixia Jia, Zhenhong Chen, Jiangang Wang, Ruosi Yan
Summary: This study reveals the synergistic enhancement of oxygen plasma treatment on the interfacial properties and impact resistance of UHMWPE fiber-reinforced polymer matrix composites. The optimal parameters for the treatment were found to significantly improve the shear performance at the interface and mechanical properties of the composites.
COMPOSITE STRUCTURES
(2022)
Article
Polymer Science
Yuxi Shen, Alia Gallet-Pandelle, Hiroki Kurita, Fumio Narita
Summary: The study demonstrated that adding a surface-active agent and basalt fibers can significantly improve the mechanical properties of cellulose acetate composites, while the arrangement of fibers also affects this effect. Photodecomposition experiments showed that the photocatalyst also has a certain impact on the decomposition of materials.
Article
Materials Science, Composites
Ting Gu, De-xiang Sun, Xu Xie, Xiao-dong Qi, Jing-hui Yang, Yan-zhou Lei, Yong Wang
Summary: This article introduces a method for preparing renewable high thermal conductivity composites and investigates their thermal and mechanical properties. The results show that the composites exhibit high thermal conductivity, good mechanical properties, flame retardancy, and electrical conductivity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Review
Engineering, Multidisciplinary
Jorge Guillermo Diaz-Rodriguez, Alberto David Pertuz-Comas, Octavio Andres Gonzalez-Estrada
Summary: This work analyses the mechanical properties of continuous fibre-reinforced thermoplastic composites manufactured by FDM, summarizing properties such as tension, bending, shear, impact, and fatigue. The results show a wide variation in mechanical properties and a lack of reporting on certain aspects of damage mechanisms in composites.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Shuhang Liu, Yiting Guo, Jianwei Li, Sichen Wu, Jie Xu, Emilia Pawlikowska, Jie Kong, Artur Maciej Rydosz, Mikolaj Szafran, Feng Gao
Summary: Ceramic/polymer dielectric functional composites, specifically the (Ba0.6Sr0.4)TiO3/PEEK (BST/PEEK) composites, were prepared with high frequency stability of the dielectric constant and low dielectric loss via cold-pressing sintering. The optimal properties of the BST/PEEK composites were achieved at a BST concentration of 40 vol% and sintered at 360°C for 1 hour, showing a permittivity of 23, a loss of 0.0065, F(x) <5%, and a dielectric tunability of 11.9%. The study provides insight for developing new composites with low loss and high frequency stability.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Duo Chen, Juanzi Li, Wenxuan Yin, Yuhuan Yuan, Yunguang Cui, Shichao Li, Minjing Liu, Cong Peng, Xin Liu, Jinrui Ye, Zhanjun Wu
Summary: In this paper, a new type of thermoplastic epoxy matrix was used to prepare highly recyclable carbon fiber reinforced composites. The experimental results showed that the composites exhibited excellent mechanical properties and could be easily and rapidly recycled at room temperature.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Victoria Rigual, Antonio Ovejero-Perez, Sandra Rivas, Juan C. Dominguez, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Victoria Rigual, Gabriella Papa, Alberto Rodriguez, Maren Wehrs, Kwang Ho Kim, Mercedes Oliet, M. Virginia Alonso, John M. Gladden, Aindrila Mukhopadhyay, Blake A. Simmons, Seema Singh
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Applied
M. Mar Villar-Chavero, Juan C. Dominguez, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
CARBOHYDRATE POLYMERS
(2020)
Article
Engineering, Chemical
Miguel Ayuso, Pablo Navarro, Andre M. Palma, Marcos Larriba, Noemi Delgado-Mellado, Julian Garcia, Francisco Rodriguez, Joao A. P. Coutinho, Pedro J. Carvalho
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Biotechnology & Applied Microbiology
Sandra Rivas, Victoria Rigual, Juan Carlos Dominguez, M. Virginia Alonso, Mercedes Oliet, Juan Carlos Parajo, Francisco Rodriguez
FOOD AND BIOPRODUCTS PROCESSING
(2020)
Article
Biochemistry & Molecular Biology
Antonio Ovejero-Perez, Victoria Rigual, Juan Carlos Dominguez, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Article
Chemistry, Applied
Juan Carlos Dominguez, Belen Del Saz-Orozco, Mercedes Oliet, M. Virginia Alonso, Francisco Rodriguez
Summary: The thermal degradation kinetics of phenolic foam, lignin particle-reinforced phenolic foam, and lignin reinforcement were studied using the discrete DAEM and MFK methods to obtain activation energy values. The effect of reinforcement on LRPF kinetics was analyzed, showing a modification in the degradation process. No compensation effect for kinetic parameters was found between Vyazovkin method and DAEM results.
JOURNAL OF CELLULAR PLASTICS
(2021)
Article
Chemistry, Multidisciplinary
Antonio Ovejero-Perez, Miguel Ayuso, Victoria Rigual, Juan Carlos Dominguez, Julian Garcia, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
Summary: This study offers a technoeconomical analysis of the IL recovery step in a real biorefinery pretreatment process by analyzing the influence of washing water volumes on enzymatic hydrolysis and IL recovery costs. The results showed that incremental volumes of water led to higher operating costs in the IL recovery step, which can be compensated with less IL makeup costs.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Review
Chemistry, Applied
Cynthia Hopson, M. Mar Villar-Chavero, Juan C. Dominguez, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
Summary: Cellulose ionogels are extensively studied for their versatile properties and wide-ranging applications. The ability to encapsulate an ionic liquid in a biodegradable matrix makes it a promising alternative to fossil fuel-derived materials. The flexibility in formulation, choice of additives, and different cellulose types allow for customization for specific applications in various fields.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Antonio Ovejero-Perez, Victoria Rigual, Mercedes Oliet, Francisco Rodriguez, Juan Carlos Dominguez, M. Virginia Alonso
Summary: Biomass fractionation plays a crucial role in the development of competitive biorefineries, especially in the isolation and recovery of lignin. This study compared two fractionation processes, organosolv and ionosolv, using autohydrolyzed hemicellulose-free poplar as feedstock. The results showed that the ionosolv process at higher temperature achieved higher lignin recovery and produced more thermally stable lignin. The two processes had different effects on lignin recovery and properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Energy & Fuels
Tamara M. Santos, Victoria Rigual, Juan C. Dominguez, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
Summary: Lignocellulosic materials have great potential as feedstock for biofuel and bioproduct production. This study focused on the fractionation of Pinus radiata wood using an organosolv process. The effects of temperature, time, and ethanol concentration on the yield, degree of delignification, hemicellulose content, and glucan content of the delignified solid were evaluated. Increasing severity of the organosolv process and reducing ethanol concentration resulted in higher glucan enrichment in the delignified solid. The liquid fraction obtained during the process was used to recover lignin and hemicellulosic fractions. The hemicellulose and lignin content of the delignified solid were correlated with thermal stability measurements.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Agricultural Engineering
Cynthia Hopson, Victoria Rigual, Juan C. Dominguez, M. Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
Summary: The increase in environmental problems and the need for substituting fossil fuels has led to a demand for new raw materials and formulation methods. This study utilized a cellulose-rich solid from a biorefinery process to create gel-type materials and ionogels. The ionogels demonstrated higher rheological properties and important characteristics due to the utilization of a phosphate anion ionic liquid. Additionally, the presence of lignin in the ionogels enhanced their rheological properties without affecting their internal structure and morphology.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Education, Scientific Disciplines
J. C. Dominguez, M. V. Alonso, E. J. Gonzalez, M. I. Guijarro, R. Miranda, M. Oliet, V. Rigual, J. M. Toledo, M. M. Villar-Chavero, P. Yustos
Summary: The study aims to develop teaching materials for chemical engineering students to encourage self-learning, support teaching courses, and develop problem generators and lecturing tools to facilitate student learning.
EDUCATION FOR CHEMICAL ENGINEERS
(2021)
Article
Engineering, Multidisciplinary
Keyu Zhu, Xitao Zheng, Jing Peng, Jiaming Sun, Ruilin Huang, Leilei Yan
Summary: This paper discusses the influence of multiple impacts on the compression strength of honeycomb sandwich structures with composite face sheets. It is found that the size of the impactor affects the turning point of the compression strength. Additionally, high impact energy leads to damage in the bottom face sheet and reduces the overall compression strength.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Danqian Wang, Yanfei Yue, Jueshi Qian
Summary: Magnesium Potassium Phosphate Cement (MKPC) as a binder for steel rebars shows improved corrosion resistance when subjected to carbonation, due to the increase in pH and the formation of a more protective oxide film.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhibin Li, Wenyu Wang, Pengcheng Xue, Xingyu Wei, Jian Xiong
Summary: This work proposes a design approach and manufacturing method for carbon fiber reinforced plastic (CFRP) corrugated sandwich truncated cones (CSTC) to improve their anti-debonding ability and ensure reliability. The study establishes theoretical models for CSTCs' stiffness and failure modes, which are verified through experiments and finite element analysis (FEA). The research reveals the effect of geometric parameters on failure modes and performs an optimal design for CSTC structures. The findings have significant implications for the design and application of lightweight CSTCs in constructions, such as launch vehicle adapters.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mingyu Zhang, Lei Chu, Jiahua Chen, Fuxun Qi, Xiaoyan Li, Xinliang Chen, Deng-Guang Yu
Summary: This review summarizes the different structures and construction methods of fibrous membranes with asymmetric wettability. It also reviews the biological applications of these membranes and suggests future challenges.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
E. Mofakhami, L. Gervat, B. Fayolle, G. Miquelard-Garnier, C. Ovalle, L. Laiarinandrasana
Summary: This study investigates the effects of fibre concentration on the mechanical response of welded glass-fibre-reinforced polypropylene (GF-PP). Experimental observations reveal a significant reduction in weld ratio, up to 60%, indicating a decreased strength compared to the bulk material. Increasing fibre content in the welded material results in a decrease in stress at break and strain at the maximum stress. The use of DIC technique and X-ray microtomography further confirms the localized strain amplification in the welded zone due to the significant increase in fibre density.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Emad Pourahmadi, Farjad Shadmehri, Rajamohan Ganesan
Summary: This research compares the mechanical properties of laminates manufactured using automated fiber placement and conventional autoclave curing methods. The results show that laminates manufactured using automated fiber placement have a lower interlaminar shear strength compared to laminates reconsolidated using autoclave curing. A finite element simulation method is proposed to quantitatively analyze these differences.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Johnny Jakobsen, Benny Endelt, Fahimeh Shakibapour
Summary: This study proposes a new bolted/pinned joining method for composite applications, which improves load transfer by introducing a patch-type reinforcement. Experimental results demonstrate significant improvements in both static and fatigue load conditions compared to existing methods. Finite element simulations highlight the advantage of this method, as it creates a more efficient load-transferring mechanism through different stress distributions.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper proposes a novel approach to assess multi-crack behavior in layered fiber-polymer composites. The generated Compliance and R-curves provide useful insights into understanding the multiple delamination process and allow for separate evaluation of strain energy release rate (SERR) for each crack. The developed cohesive zone model successfully simulates the failure process zone of three parallel cracks, showing good agreement between the numerical model and experimental results.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Renil Thomas Kidangan, Sreedhar Unnikrishnakurup, C. Krishnamurthy, Krishnan Balasubramaniam
Summary: The induction heating process can accurately identify fiber orientation and stacking order, making it a valuable tool for large-area inspection and quality control in manufacturing fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Sungjun Hwang, Yousoo Han, Douglas J. Gardner
Summary: Bleached Kraft pulp, unbleached Kraft pulp, and old corrugated cardboard pulp are suitable for producing cellulose nanofibril suspensions. Spray drying is a fast, simple, cost-effective, and scalable drying method. Spray-dried cellulose nanofibrils can be used as reinforcing materials in polypropylene matrices. The particle size of cellulose nanofibrils affects the material properties.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mehdi Mahdavi, Abbas Zolfaghari
Summary: This study aims to improve the recovery forces of shape memory polymers (SMPs) through material extrusion additive manufacturing. By using glass fiber (GF) as reinforcement and manufacturing multi-layer composite specimens, it was found that PLA with 6.62% GF exhibited the best recovery force, which was further optimized through annealing heat treatment.
COMPOSITES PART B-ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Xiang Ao, Antonio Vazquez-Lopez, Davide Mocerino, Carlos Gonzalez, De-Yi Wang
Summary: The vulnerability of natural fibers to heat and fire poses a significant challenge for their substitution of traditional fiber reinforcements in composite materials. Natural fiber/polymer composites (NFCs) are regarded as potential candidates for engineering applications due to their environmental friendliness and low-impact sourcing. Thus, appropriate approaches need to be implemented to enhance the fire safety of NFCs. This review summarizes and discusses the latest understanding of flammability and thermal properties of natural fibers, with a special focus on their interaction with polymer matrix in fire behavior. Additionally, the latest developments in flame-retardant approaches for NFCs are reviewed, covering both flame retardancy and fire structural integrity. Finally, future prospects and perspectives on fire safety of NFCs are proposed, providing insights into further advancements of NFCs.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Cheng Wang, Siqi Huo, Guofeng Ye, Bingtao Wang, Zhenghong Guo, Qi Zhang, Pingan Song, Hao Wang, Zhitian Liu
Summary: The demand for multifunctional, transparent epoxy resin with superior dielectric, mechanical, and fire-safety performances is increasing in modern industries. Researchers have developed an epoxidized, phosphaphenanthrene-containing poly(styrene butadiene styrene) (ESD) for advanced fire-safe epoxy resin, which maintains high transparency and improves UV-blocking property. The addition of 10 wt% ESD results in improved mechanical properties, decreased dielectric constant and loss, and outperformance compared to other fire-safe epoxy resins. This research provides an effective method for developing multifunctional flame-retardant epoxy resin.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bo Pang, Heping Zheng, Zuquan Jin, Dongshuai Hou, Yunsheng Zhang, Xiaoyun Song, Yanan Sun, Zhiyong Liu, Wei She, Lin Yang, Mengyuan Li
Summary: This study develops an internal superhydrophobic material (ISM) using waste denitrification fly ash, which maintains stable hydrophobicity under harsh conditions of use and does not rely on expensive fluor-based surface modifications. The synthesized ISM has excellent matrix strength, strong waterproof properties, and retains superhydrophobicity even at damaged or friction interfaces.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Meirbek Mussatayev, Qiuji Yi, Mark Fitzgerald, Vincent K. Maes, Paul Wilcox, Robert Hughes
Summary: Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. This study designed a directional eddy-current (EC) probe to evaluate the detectability of out-of-plane wrinkles. Experimental evaluations and finite element modeling were conducted to better understand the relationship between eddy-current density and defect detection. The findings suggest that the probe configuration with an asymmetric driver coil and differential pickup coils shows the best capability for wrinkle detection.
COMPOSITES PART B-ENGINEERING
(2024)