Article
Chemistry, Physical
Qing Wu, Abdur Razzak, Hao Deng, Huanhuan Bai, Jianfeng Zhu
Summary: A mussel inspired co-deposition of ferric ion-polydopamine (PDA) on carbon fiber is developed to enhance the interfacial adhesion of epoxy composites. The effects of ferric ion contents on fiber surface characteristics and interfacial adhesion are investigated. The formation of bis-and tris-Fe3+-catechol complexes is affected by the addition amount of FeCl3, while the level of Fe3+ ions significantly impacts DA oxidation. The surface modification with ferric ion-PDA complex can increase the interfacial shear strength by enhancing the interfacial crosslinking density.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Qing Wu, Xin Yang, Jinqian He, Ziyi Ye, Qianli Liu, Huanhuan Bai, Jianfeng Zhu
Summary: In this study, porous graphene oxide was used as a nanoscale reinforcement to improve the interfacial adhesion in composites, resulting in significantly higher interfacial shear strength compared to untreated fiber and GO/fiber reinforcement. The enhancement was attributed to rich interfacial interactions and improved surface energy through the synergistic effects of polyethylenimine, as well as the formation of a rigid-soft transition zone for stress dissipation. The advantages of porous graphene oxide suggest potential for further advancements in composite materials by carefully designing its properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Qing Wu, Huanhuan Bai, Ruyi Zhao, Aijun Gao, Hao Deng, Ziyi Ye, Jianfeng Zhu
Summary: A core-shell ZrO2@GO hybrid was prepared and incorporated onto carbon fiber via dip-coating to enhance the interfacial adhesion of epoxy composites. The ZrO2@GO functionalized fiber composite showed the highest interfacial shear strength, with significant improvements over untreated fiber, only epoxy sizing coated fiber, and silane coupling agent-encapsulated ZrO2 decorated fiber composites. The enhanced adhesion was attributed to improved resin wettability, multiple interactions between GO and epoxy resin, and the formation of a mobile network absorbing energy.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Manufacturing
Kai He, Huanchen Liao, Zejia Liu, Yiping Liu, Liqun Tang, Bao Yang, Licheng Zhou, Zhenyu Jiang
Summary: The introduction of nanophases into the interface between fibers and matrix in fiber-reinforced polymer composites can significantly improve the interfacial bonding. Different geometric shapes of nanophases have different reinforcing efficiencies. A multiscale mechanical model is proposed to establish the relationship between nanophase geometry and the transverse tensile strength of composites. The study shows that high aspect ratio nanotubes have superior enhancing effects, but the disadvantage of their low distribution density in the interfacial region needs to be balanced for optimal performance of multiscale composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
William A. Pisani, Matthew S. Radue, Sagar Umesh Patil, Gregory M. Odegard
Summary: Flattened carbon nanotubes (flCNTs) show potential as a form of composite material reinforcement with self-assembly and packing efficiency, and computational methods are used to drive their design through efficient polymer selection. The choice of polymer matrix is crucial for the properties at the reinforcement/polymer interface, impacting the overall performance of the composite materials. The predictions suggest that the fluorinated cyanate ester demonstrates the best overall compatibility with flCNTs, showing higher resistance to shearing and peak tension strength compared to other polymer systems.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Review
Polymer Science
Ching Hao Lee, Abdan Khalina, Seng Hua Lee
Summary: Plant fibers have gained popularity due to increasing environmental awareness and are widely used in plant-fibers-reinforced polymer composites. Interfacial adhesion mechanisms play a crucial role in affecting the properties of these composites, with four key interface mechanisms highlighted. The importance of interfacial adhesion condition on the performance of plant fiber polymer composites is emphasized, as physical, thermal properties, and flexural strength are highly dependent on it.
Article
Engineering, Multidisciplinary
Qing Wu, Huanhuan Bai, Ruyi Zhao, Ziyi Ye, Hao Deng, Bolin Xiao, Jianfeng Zhu
Summary: In this study, amine-caged ZrO2@GO multilayer core-shell hybrids were successfully fabricated and incorporated into an epoxy matrix for the first time to enhance the carbon fiber-matrix interfacial adhesion. The addition of this hybrid resulted in the highest interfacial shear strength, with significant enhancements compared to untreated, ZrO2, and GO reinforced composites. The strengthening mechanism is achieved by increasing the wettability of the resin to the fiber.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
Dongting Gao, Hongru Yang, Gang Liu, Chunhai Chen, Jianan Yao, Chang Li
Summary: Electrochemical oxidation of carbon fiber is used to enhance the interfacial adhesion of carbon fiber reinforced polyaryletherketone composites. The effect of current intensity on the surface structure of carbon fiber and interfacial properties of the composites has been deeply investigated. The results show that a current intensity of 200 A leads to the highest interfacial performance, mainly due to the improvement of carbon fiber surface roughness, wettability, and oxygen content. The degree of graphitization also plays a crucial role in the interfacial properties. Balancing the wettability and graphitization degree is the key to enhance the interfacial properties of carbon fiber reinforced polyaryletherketone composites.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Polymer Science
Prashant Gangwani, Mitjan Kalin, Nazanin Emami
Summary: In this study, the effectiveness of compatibilizers in blends and composites produced using a solvent manufacturing process was evaluated. The findings revealed that while the compatibilizers consistently enhanced the properties of PPS-based compositions, their utility is constrained to less complex compositions. For fibrous-reinforced PPS-PTFE composites, the improvement in performance does not justify the presence of compatibilizers. In contrast, for UHMWPE compositions, compatibilizers demonstrated negligible or even detrimental effects, particularly in reinforced UHMWPE. Overall, the epoxy-based compatibilizer Joncryl stands out as the only effective option for enhancing mechanical performance. Thermal and chemical characterization indicated that the compatibilizers function as chain extenders and enhance the fiber-matrix interface in PPS-based compositions, while they remain inactive in UHMWPE-based compositions.
Article
Engineering, Manufacturing
Peng Xu, Tangfeng Feng, Yunfei Wang, Wenyu Shen, Huan Wang, Huaxin Peng, Faxiang Qin
Summary: A new rapid evaluation method of composite interfacial shear strength using impedance parameter is proposed in this study, which can calculate IFSS of composites with different resin matrixes conveniently and rapidly. The method shows great potential to screen resin matrixes with excellent interfacial properties towards advanced fiber-reinforced thermosetting resin matrix composite, compared to traditional interface mechanical tests.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Chemistry, Physical
Bo Song, Zhide Liu, Tingting Wang, Li Wang
Summary: By uniformly grafting CNTs onto PBO fiber composites at a high density, the surface wettability and interfacial interaction were improved, resulting in significantly increased IFSS and ILSS values in the modified composites. The mechanical properties of the interphase were enhanced, leading to effective transfer of interfacial load and improved structural stability, with a substantial increase in impact strength observed in the modified composites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Mechanics
Sneha B. Cheryala, Chandra S. Yerramalli
Summary: The effect of hybridization on the growth of interface crack along the fiber is predicted. The study shows an enhancement in the compressive splitting strength with hybridization due to the lateral confinement effect on the interfacial crack.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Materials Science, Composites
Jinlong Zhao, Song Zhang, Xulin Ke, Anran Pan, Qi Zhou, Shaohua Zeng, Pengpeng Chen, Ying Xu, Wangyan Nie, Yifeng Zhou
Summary: In this study, graphene oxide (GO) with different oxidation degrees was synthesized and grafted onto the surface of glass fiber fabric (GFf) for the fabrication of GFf/epoxy laminated composites. The interlaminar and interfacial properties as well as interlaminar microstructure of the composites were investigated. The results showed that the dispersion state and strengthening/toughening efficiency of GO in the composites were influenced by the various oxygen-containing functional groups on the GO surface due to oxidation degrees, thus affecting the composites' interlaminar and interfacial adhesion. The optimal oxidation degree of GO was achieved by using a moderate weight ratio of oxidation agent (KMnO4)/graphite (2:1), which improved the interlaminar shear strength, work of fracture, storage moduli, fiber/matrix interfacial adhesion, and glass-transition temperature of the composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Qing Wu, Huanhuan Bai, Xin Yang, Jianfeng Zhu
Summary: In this study, an innovative use of vacuum filtration approach is proposed to modify the circumferential surface of structural carbon fiber, aiming to improve the interfacial adhesion of composites by constructing a synergistic hydrogen bond network. The obtained hybrid reinforcement exhibits significantly higher interfacial shear strength compared to untreated fiber and CNF/CNT grafted fiber. The improvement is mainly attributed to the formation of dense hydrogen bonds among CNFs, PVA, and CNTs, leading to larger energy consumption at interphase, as well as the spider's web-like structure of CNF/CNT that deflects cracks and promotes stress transfer.
COMPOSITES PART B-ENGINEERING
(2021)
