Article
Polymer Science
Bin Du, Daodao Xue, Rubai Luo, Kenan Yang, Huailin Li, Shisheng Zhou
Summary: This paper mainly focuses on improving the properties of epoxy resin by utilizing carbon nanotubes (CNTs) for better dispersion and reinforcement in composites. The results show that the modified CNTs have better performance in the composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Hengyang Wang, Xiaofang Liu, Zizhen Zhou, Hong Wu, Yao Chen, Bin Zhang, Guoyu Wang, Xiaoyuan Zhou, Guang Han
Summary: In this study, an effective nanocompositing strategy was developed to enhance the thermoelectric and mechanical performance of Ag2Se. The synthesized Ag2Se/CNTs nanocomposites showed significantly reduced lattice thermal conductivity and improved power factor, leading to exceptional thermoelectric performance. Additionally, the composite also exhibited enhanced mechanical properties compared to pristine Ag2Se.
Article
Materials Science, Multidisciplinary
Xing Zhou, Jingrui Deng, Changqing Fang, Wanqing Lei, Yonghua Song, Zisen Zhang, Zhigang Huang, Yan Li
Summary: This study prepared carbon nanotubes/polylactic acid composites using 3D printing method, and found that the orientation of CNTs affected the properties of the composites. The 3D printing process was beneficial for improving the electrical conductivity and mechanical properties of the composites.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Yuxin Sun, Xiwen Zhang, Dongyu Zhao
Summary: The current study reports the synthesis and characterization of aminopropyl-terminated polydimethylsiloxane-treated carbon nanotube (AFCNT)-reinforced epoxy nanocomposites. The CNTs were functionalized with PDMS-NH2 to enhance their properties. The AFCNTs were then successfully dispersed in epoxy resin using an emulsifier and a three-roller mill. The resulting AFCNT-reinforced epoxy nanocomposites showed improved mechanical and thermal properties.
Article
Engineering, Manufacturing
Dawei Zhang, Ying Huang, Yechun Wang
Summary: Adding a small percentage of CNTs on rough steel substrates significantly improves the bonding performance of epoxy coatings, changing the failure mode and enhancing the wettability of the coatings on the substrates.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Electrical & Electronic
Omer Guler, Oykum Basgoz, Seval Hale Guler, Canan A. Canbay, Sehzat Acikgoz, Mustafa Boyrazli
Summary: The addition of carbon nanotubes (CNTs) and graphene nanoplates (GNPs) into polyester matrix affects the mechanical properties and electrical conductivity of the composite materials. With increasing reinforcement ratio, the mechanical properties and electrical conductivity of both polyester-CNTs composite and polyester-CNT + GNP composite improved. However, the mechanical properties of CNTs-GNPs reinforced polyester composite were found to be lower than composites reinforced only with CNTs.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Lixiu Zhang, Haihang Wang, Mengyao Chen, Qinglin Tang, Jie Hu, Yao Wang, Linjun Huang, Shichao Wang, Dong Zhao, Peter Strizhak, Jianguo Tang
Summary: In this study, unzipped carbon nanotubes (uCNTs) and drilled carbon nanotubes (dCNTs) were prepared and anchored with Eu3+ complexes to form stable tenon structures. The results showed that Eu-dCNTs significantly improved the mechanical properties of EP, with a 161% increase in ultimate tensile strength and a 226% increase in flexural strength. The drilling treatment and tenon structure of Eu-dCNTs played a key role in enhancing the mechanical properties of EP.
Article
Materials Science, Multidisciplinary
Hongwei Pan, Zhaokun Wang, Zhaoyang Wei, Jiaping Zhang, Minghan Xu, Chengzhong Zong, Lan Cao, Qingfu Wang
Summary: In this study, a sandwich-structured TPU/CNTs-ILs flexible sensor was prepared using a combination of coating and 3D printing. The sensor exhibited a sensitive resistance response at small and large strains while maintaining high mechanical strength. Furthermore, the sensor displayed good resistance response even after cyclic stretching for more than 400 seconds. The research suggests that the flexible sensor can monitor human motion behavior and has excellent prospects as wearable electronic components.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Thermodynamics
Xueming Yang, Fanxing Meng, Xinyao Zhang, Bingyang Cao, Yao Fu
Summary: The study systematically investigated the thermal conductivities of 3D carbon nanotubes and graphene fillers using SPH and DPD simulations, revealing that introducing both CNT and graphene fillers simultaneously can most effectively improve the thermal conductivity of the composites. The coupled DPD and SPH model was demonstrated as a viable approach for understanding the thermal conductivities of nanocomposites with reduced computational cost compared to full atomistic simulation.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Polymer Science
Xiaohui Bao, Fangyi Wu, Jiangbo Wang
Summary: The research showed that the flame retardant CNTs-PMDA significantly improves the flame retardancy of epoxy resin and forms a residue char layer during thermal degradation. Additionally, the functionalization of CNTs with PMDA enhances the dispersion of CNTs in the epoxy resin matrix.
Article
Mechanics
Zhiqiang Yao, Chengguo Wang, Yanxiang Wang, Jianjie Qin, Ziming Ma, Xuanhao Cui, Qifen Wang, Huazhen Wei
Summary: Depositing a thin layer of carbon nanotubes on the surface of carbon fibers through chemical vapor deposition and subsequently aminating them can significantly enhance the interfacial properties and bonding strength of carbon fiber/epoxy composites.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Peng-Xiang Zhang, Hong Yan, Min Zeng
Summary: Nano Ni particles of 50 to 80 nm are uniformly decorated on the surface of CNTs to improve their interface wettability with aluminum. The CNTs@Ni/2024Al system exhibits good wettability with a contact angle of 81.9 degrees. The more active interfacial reactions of the CNTs@Ni/2024Al system release significant heat, reducing surface tension and solid-liquid interfacial energy, which leads to the breakdown of the molten 2024Al interface and provides wettability.
Article
Chemistry, Multidisciplinary
Siyu Jiang, Chunhua Lou, Yongli Zhou, Xiaohua Gu, Xianzhi Kong
Summary: Corn straw/epoxy resin composites (CS/ECs) and maleic anhydride acetylated CS/ECs (MA-CS/ECs) were prepared and characterized. The interfacial affinity of the composites was confirmed by the contact angle. The results demonstrated the successful bonding of maleic anhydride onto the structure of corn straw. The MA-CS/ECs showed better impact and flexural resistance, and stronger interfacial compatibility than CS/ECs.
Article
Chemistry, Multidisciplinary
Marie N. Barshutina, Valentyn S. Volkov, Aleksey V. Arsenin, Dmitriy I. Yakubovsky, Alexander V. Melezhik, Alexander N. Blokhin, Alexey G. Tkachev, Alexander V. Lopachev, Vladislav A. Kondrashov
Summary: The paper presents a cost-effective and scalable approach to produce highly homogeneous graphene and CNT-based silicone composites with superior electrical and mechanical properties. The study investigates the influence of processing parameters, graphene/CNT ratio, and hybrid filler loading, finding optimal parameters for superior composite properties. The graphene/CNT hybrid system shows a synergistic effect that prevents aggregation and facilitates dispersion, contributing to the superior properties of the hybrid composites.
Article
Materials Science, Multidisciplinary
Bakhan S. Mustafa, Gelas M. Jamal, Omed Gh. Abdullah
Summary: Hybrid polymer nanocomposites were fabricated by incorporating zirconium dioxide and yttrium oxide nanoparticles into epoxy resin and strengthening it with multi-walled carbon nanotubes. The addition of a small amount of MWCNT improved the mechanical and thermal properties of the hybrid nanocomposites. The nanocomposites also showed enhanced structural properties and thermal stability. Overall, this material is a suitable candidate for structural and sub-structural construction.
RESULTS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Guijun Xian, Rui Guo, Chenggao Li, Bin Hong
Summary: In this article, two types of carbon/glass fiber hybrid rods with sandwich structures were designed and developed using pultrusion technology. The effect of fiber hybrid mode/sandwich structure on the degradation mechanism of mechanical properties was investigated. The results showed that the multi-layer sandwich structure with random fiber hybrid design exhibited significant strength improvement compared to the single-layer sandwich structure. Immersion in bending loading and water diffusion led to the formation and expansion of microcracks or microvoids in the resin tensile area, causing stress concentration in the single-layer sandwich structure. The uniform dispersion of carbon fibers into glass fibers effectively alleviated the uneven interface stress concentration for the multi-layer sandwich structure. Long-term life prediction showed a significant increase in mechanical properties for the multi-layer sandwich structure compared to the single-layer structure.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Civil
Rui Guo, Chenggao Li, Guijun Xian
Summary: This study investigates the performance changes and degradation mechanism of fiber reinforced polymer (FRP) composite rod under hygrothermal aging conditions. The results reveal that water absorption and diffusion behavior follows a two-stage model, and resin plasticization and interfacial debonding are the main factors contributing to performance degradation.
ENGINEERING STRUCTURES
(2023)
Article
Polymer Science
Jingwei Tian, Chenggao Li, Xiao Qi, Guijun Xian
Summary: In this study, the hygrothermal aging behavior of multi-fillers reinforced epoxy composites (MFREC) was investigated through immersion experiments in different water environments. It was found that the moisture uptake and mechanical properties of MFREC were significantly influenced by the hygrothermal aging, with lower moisture uptake in saline water and a larger decrease in strength and glass transition temperature. Furthermore, the long-term life prediction of MFREC as coatings in different bridge environments was conducted, showing different strength retentions and an additional degradation in the southern environment.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Mechanical
Jingwei Tian, Xiao Qi, Chenggao Li, Guijun Xian
Summary: In this study, multi-fillers reinforced epoxy composites (MFREC) were prepared and analyzed to investigate their mechanical, thermal properties, friction behaviors, and wear mechanisms. The results showed that MFREC exhibited enhanced mechanical properties and reduced friction coefficient with increasing loads and temperatures.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Jingwei Tian, Xiao Qi, Chenggao Li, Guijun Xian
Summary: In this study, an environment-friendly and self-adhesive superhydrophobic polydopamine coating was successfully developed. The coating exhibited ideal static contact angle and roll-off angle through self-assembly technique. It showed tight internal compactness, excellent mechanical robustness, and significant mechanical stability. Furthermore, the coating had obvious self-cleaning properties and enhanced ice repellence and mechanical durability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Mechanics
Zhen Wang, Guijun Xian, Qingrui Yue
Summary: This paper focuses on the CFRP-strengthened steel beam using a ductile adhesive and validates the effectiveness of the trapezoidal CZM. 3-D finite element models were used to simulate the mechanical response and the debonding behavior. The ductile adhesive is shown to be more appropriate due to reduced normal stress, increased mixed-mode fracture energy, and more uniform stress distribution.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Deao Kong, Ping Zhou, Chenggao Li, Bin Hong, Guijun Xian
Summary: This study quantitatively investigated the effects of pipe and crack geometry, CFRP properties, and prestress levels on the Mode I stress intensity factor (SIF) of a prestressed CFRP-wrapped steel pipe with a through-walled crack through dimensional and finite element analysis. The results showed that the SIF was affected by the radius and wall thickness of the pipe, as well as the stiffness of the CFRP and the level of prestress. An empirical equation for calculating the Mode I SIF in the CFRP-wrapped thin-walled pipe with a through-walled crack was proposed, along with a mechanical method to calculate the decrement of pipe substrate bearing internal pressure caused by prestress.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Anni Wang, Xiaogang Liu, Qingrui Yue, Guijun Xian
Summary: Flax/carbon fiber hybrid reinforced polymer composites were prepared to improve the mechanical properties. The effects of carbon fiber volume fraction, carbon fiber monolayer thickness, and hybrid mode on the properties of hybrid composites were studied by tensile tests. The results showed that the hybrid composites achieved positive hybrid effects with a minimum repeating unit of flax fiber as skin and carbon fiber as core.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Mechanics
Zhen Wang, Guijun Xian
Summary: This article reviews the emerging application of fiber reinforced polymer (FRP) composites in replacing steel cables for cable-supported bridges, and the impacts of vehicle collisions on FRP composites and cables. Factors such as impact energy, fiber or matrix types, pretension load, cable tonnage, cable forms, impact position, and anchorage system greatly affect the impact performances of FRP cables. Further experimental or numerical investigations are required to guide the anti-collision design of FRP cables in practical applications, despite the challenges of high manufacturing and testing costs, property sacrifice in material design, and lower computational efficiency.
COMPOSITE STRUCTURES
(2023)
Article
Polymer Science
Anni Wang, Peng Yin, Xiaogang Liu, Guijun Xian
Summary: The study focuses on the water absorption and mechanical properties of ramie-fiber-reinforced polymer composites (RFRP) in a hydrothermal environment. The moisture absorption rate of RFRP is mainly influenced by ambient humidity. Before reaching moisture absorption equilibrium, the mechanical properties decline rapidly and then stabilize, with a significant decrease in mechanical properties as humidity increases. The interfacial bonding performance of RFRP is reduced by water molecules, with a greater degradation of modulus than strength.
Article
Materials Science, Multidisciplinary
Xiao Qi, Jingwei Tian, Rui Guo, Guijun Xian
Summary: This study systematically analyzed the effects of hydrothermal aging on the properties of CFRP rods. It was found that elevated temperature and humidity accelerated water absorption and led to degradation in tensile strength, three-point bending strength, and short-beam shear strength. The most significant degradation occurred in the environment with alternating temperatures. The long-term effects of water molecules caused resin hydrolysis and debonding of the fiber-matrix interface, resulting in degradation in three-point bending and short-beam shear strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Xiao Qi, Jingwei Tian, Guijun Xian
Summary: In this paper, the hydrothermal ageing of CFRPs is comprehensively summarized, including water uptake process, property degradation, and prediction models. The different stages of ageing are characterized by the evolution of mechanical properties. The three typical model methods for life prediction of CFRPs are compared in terms of accuracy, applicability, reliability, precision, practicality, environmental factors, and degradation mechanisms.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Composites
Shaoce Dong, Xiao Qi, Jingwei Tian, Ping Zhou, Chenggao Li, Guijun Xian
Summary: This study investigated the long-term interfacial shear strength (IFSS) and flexural strength of GFPP bars under the coupling effect of bending and immersion in a simulated seawater and sea sand concrete (SWSC) solution. The results showed that the mechanical properties of GFPP bars degraded more significantly with higher immersion temperature and bending stress. Microscopic tests identified corrosion of glass fibers and debonding between glass fibers and polypropylene as the main causes of degradation.
POLYMER COMPOSITES
(2023)
