Adhesion enhancement of PEEK/6161-T6 FLJ joints via laser surface modification

Wang, Zhenmin; Bi, Xiaoyang; Liu, Bosheng; Xu, Mengjia; Dong, Zijun

doi:10.1016/j.compositesb.2021.108797

Cited by 50 publications

(10 citation statements)

References 20 publications

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“…Electron microscopy is one of the most commonly used tools that can directly observe the interface of polymers and metals via preparing a cross section of polymer–metal hybrid structures. Scanning electron microscopy (SEM) is applied to observe the morphology, , while transmission electron microscopy (TEM) not only has higher resolution for observation, but can also be used for phase identification . Furthermore, electron microscopy equipped with energy-dispersive X-ray spectroscopy (EDX) can be used to analyze the chemical composition at the interface. − Another technique used for identifying interfacial phases is X-ray diffraction (XRD).…”

Section: Introductionmentioning

confidence: 99%

Chemical Reaction and Bonding Mechanism at the Polymer–Metal Interface

Zou

Chen

Yao

et al. 2022

ACS Appl. Mater. Interfaces

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Polymer–metal hybrid structures have attracted significant attention recently due to their advantage of great weight reduction and excellent integrated physical/chemical properties. However, due to great physicochemical differences between polymers and metals, obtaining an interface with high bonding strength is a challenge, which makes it critically important to clarify the underlying bonding mechanisms. In the present research, we focused on revealing the underlying bonding mechanisms of a laminated Cr-coated steel-ethylene acrylic acid (EAA) strip prepared by hot roll bonding from the microscale to the molecular scale with experimental evidence. The microscale mechanical interlocking was analyzed and proven by scanning white light interferometry and scanning electron microscopy (SEM) by means of observing the surface and cross-sectional morphologies. Additionally, interfacial phases and chemical compositions were analyzed by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). More directly and effectively, the interface was successfully exposed for X-ray photoelectron spectroscopy (XPS) analysis. Combined with time-of-flight secondary ion mass spectroscopy (ToF-SIMS) and depth profiling analysis, the formation of −(O)C–O–Cr and −C–(O–Cr)2 covalent bonds through chemical reactions at the interface between −COOH and Cr2O3 was verified. Based on these characterization results, interfacial bonding mechanisms for the laminated Cr-coated steel-EAA strip were clearly identified to be chemical bonding and micromechanical interlocking, along with hydrogen bonding, which were all demonstrated with solid experimental evidence. In addition, 3D-render view and cross-section images of typical ion fragments at the interface were used to reveal the interfacial structure more comprehensively. The contributions of hydrogen bonds and covalent bonds to the interface were evaluated and compared for the first time. This study provides both methodological and theoretical guidance for investigating and understanding interfacial bonding formation in polymer–metal hybrid structures.

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Section: Introductionmentioning

confidence: 99%

Chemical Reaction and Bonding Mechanism at the Polymer–Metal Interface

Zou

Chen

Yao

et al. 2022

ACS Appl. Mater. Interfaces

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“…The undesirable low-interfacial reliability could be attributed to the following two factors. On the one hand, the high difference in chemical structures between CFRTP and metals causes high-strength chemical bonds that would be hardly well developed, and only weak interatomic interactions such as hydrogen bonds can be formed at CFRTP/metal interfaces. , The lack or even absence of interfacial chemical bonds results in the fact that good metallurgical bonding would be hard to be realized, which immediately results in low reliability of the hybrid structures. On the other hand, the poor compatibility of CFRTP to metals does not allow good wetting and spreading of melting CFRTP to metal surfaces and provides little area and time for the interfacial reaction to develop the interatomic interaction.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the poor compatibility of CFRTP to metals does not allow good wetting and spreading of melting CFRTP to metal surfaces and provides little area and time for the interfacial reaction to develop the interatomic interaction. The poor compatibility even can causes serious welding flaws including cracks and voids being produced at the CFRTP/metal interfaces. ,, Those flaws would suffer from stress concentration and fatigue damage during the fabrication and service of CFRTP/metal hybrid structures and undoubtedly damage joint reliability.…”

Section: Introductionmentioning

confidence: 99%

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Heteroatom Introduction to Reconstruct Interfacial Chemical Structures for High-Reliability CFRTP/A6061-T6 Hybrid Structures

et al. 2023

ACS Appl. Mater. Interfaces

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The application of carbon-fiber-reinforced thermoplastic (CFRTP)/ metal hybrid structures is a vital step for realizing the lightweight design concepts in aerospace. However, the CFRTP/metal hybrid structures are usually not reliable enough in practical applications due to the high differences in chemical and physical properties between these two materials. The current work provides a bottom-up strategy of introducing heteroatoms into CFRTP/metal interfaces to reconstruct the interfacial chemical structures and thus manufacture high-reliability hybrid structures. Based on the principle of utmost using reaction sites at metal surfaces, the heteroatoms of oxygen and hydrogen are specially designed and introduced to the CFRTP/A6061-T6 (6061) interfaces by simple and green plasma polymerization. The introduced oxygen and hydrogen heteroatoms react with the aluminum and oxygen of the oxidation film at 6061 surfaces to produce great interfacial Al−O covalencies and hydrogen bonds. The reconstructing interfacial chemical structures strengthen the joint strength of CFRTP/6061 hybrid structures from 8.82 to 23.97 MPa. Our heteroatom introduction strategy is expected to get a fresh insight into the interfacial design concept and has several important implications for the future application of high-reliability CFRTP/metal hybrid structures.

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“…Lasers, as a clean energy, are regarded as a promising alternative in the area of surface modification to tuning surface properties like roughness and wettability . Wang et al developed a feasible method of laser surface texturing to improve the adhesion between PEEK and 6061-T6 aluminum alloy through mechanical interlocking generated by periodic micropores . So far, laser-induced modification has not been applied on basalt fibers/fabric, and the effects of laser parameters on EMI SE values have not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Flexible Sandwich-Structured Co–Ni Alloy-Coated Basalt Fabrics via the Writing–Grafting–Activation–Deposition Process for Electromagnetic Interference Shielding and Electrothermal Conversion

Chen

Hai

et al. 2022

ACS Appl. Electron. Mater.

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The proliferation of electronics and intensification of electromagnetic (EM) pollution have advanced exploration of high-performance flexible EM shielding materials. Herein, a writing−grafting−activation−deposition (WGAD) process for preparation of sandwich-structured Co−Ni alloy-coated basalt fabrics (BFs) is developed for acquiring excellent shielding performance. Benefiting from admirable electromagnetic properties of an electroless deposited Co−Ni alloy and interfacial porous structure induced by a laser, electromagnetic waves (EMWs) can be attenuated through dielectric loss, magnetic loss, and multiple reflections. The maximum total shielding effectiveness (SE T ) value of the designed fabric reaches 72.33 dB at the X-band (8.2−12.4 GHz) under conditions of a 1.8 W laser energy and 30 min deposition time. In addition, the designed fabric demonstrates outstanding electrothermal performance with commendable reliability and low driving voltage. Therefore, the as-prepared fabric through the WGAD process exhibits enormous prospects in applications of EMI shielding and wearable electronics.

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Adhesion enhancement of PEEK/6161-T6 FLJ joints via laser surface modification

Cited by 50 publications

References 20 publications

Chemical Reaction and Bonding Mechanism at the Polymer–Metal Interface

Chemical Reaction and Bonding Mechanism at the Polymer–Metal Interface

Heteroatom Introduction to Reconstruct Interfacial Chemical Structures for High-Reliability CFRTP/A6061-T6 Hybrid Structures

Flexible Sandwich-Structured Co–Ni Alloy-Coated Basalt Fabrics via the Writing–Grafting–Activation–Deposition Process for Electromagnetic Interference Shielding and Electrothermal Conversion

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