Enhanced epoxy adhesion between steel plates by surface treatment and CNT/short-fibre reinforcement

Wang, Binhua; Bai, Yuxuan; Hu, Xiaozhi; Lü, Peng

doi:10.1016/j.compscitech.2016.03.008

Cited by 72 publications

(20 citation statements)

References 28 publications

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“…With regard to inter-/intralaminar toughening, extensive studies have been performed on using yarns with a large fiber diameter to investigate the effect of interlayer toughening [14,15,16]. Yasaee et al, Sun et al [17,18], and Wang et al [19] conducted systematic studies on composite laminates interleaved with chopped Kevlar fibers. Their results showed that a crack interface bridged by short Kevlar fibers was the major toughening mechanism.…”

Section: Introductionmentioning

confidence: 99%

Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers

Chen

Jiang

et al. 2019

Molecules

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The effects of thermoplastic polyimide (PI) and polypropylene (PP) fibers and areal density of toughened layer on interlaminar fracture toughness and impact performance of carbon fiber/epoxy (CF/EP) laminated composites were studied. Mode I interlaminar fracture toughness (GIC) was analyzed via double cantilever beam (DCB) tests. When comparing for the toughener type, PI played a positive role in enhancing the mode-I fracture toughness, while PP was not effective due to the less fiber bridge formed during composite curing. The toughening effects of areal density of PI were further investigated by end notched flexure (ENF) testing and low velocity impact testing to better understand the toughening mechanisms. The results revealed that the toughening effect reached its best effectiveness when the areal density of toughened layer was 30 g/m2. Compared with the control group, GIC and GIIC of CF/EP laminated composite were increased by 98.49% and 84.07%, and Fmax and Ee were enhanced by 92.38% and 299.08% under low velocity impact. There is no obvious delamination phenomenon on the surface of laminates after low velocity impact, indicating the improved interlaminar and impact performance of laminated composite.

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Section: Introductionmentioning

confidence: 99%

Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers

Chen

Jiang

et al. 2019

Molecules

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“…c). The pretreated layer is solidified together with the PI mixed glue via molecular diffusion to form a good interfacial bonding , as presented in Fig. d.…”

Section: Resultsmentioning

confidence: 99%

An experimental study on the physical and mechanical properties of B₄C/PI/AA6061 hybrid composites with various concentrations

Ji²,

Lin³

et al. 2019

Polymer Composites

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The effects of boron carbide (B4C) concentrations on the physical properties and interfacial adhesion of hybrid composites were systematically investigated. B4C/polyimide (PI) resin blends were composed of PI resin and B4C particles at weight ratios of 90:10, 80:20, 70:30, 60:40, and 50:50. The effects of alkoxysilane coupling agent KH550 on the chemical structures of B4C particles were performed using Fourier transform infrared Spectroscopy. The testing results illustrated that, the addition of alkoxysilane coupling agent was conducive to improve the interfacial adhesion between PI resin and B4C particles, while the peak at 2,932.12 cm−1 was emerged which corresponded to the C‐H anti‐symmetric stretching vibration peak of ‐CH2 group. Single‐lap‐shear strength of the specimens was firstly increased and then decreased with the increasing of B4C content, while the maximum value appeared at 30 wt% of B4C particles. Lap‐shear strength of the specimens with precoated primer layer was 12.2 MPa, which was 6.09% higher than that without primer layer. It was also corroborated that physical crosslinking reaction between B4C particles and PI resin was formed, which can effectively prevent the formation of crack and fracture in the adhesive layer under the action of tensile stress. POLYM. COMPOS., 40:3140–3148, 2019. © 2019 Society of Plastics Engineers

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“…The self-prepared thin aramid tissue 29 made by short Kevlar fibres (Dupont) of 24 g/m 2 (12 µm in diameter and 6 mm in length) was placed at the mid-plane of the composite laminate to strengthen the adhesive layer. To reduce the bubbles produced when the aramid tissue was immersed into adhesive layer with mixed epoxy, the diluted resin pre-coating solution based on our previous studies 38,39 was applied to precoat the cleaned aramid tissue through the 5 ml syringe and placed to dry at room temperature for 10 min. The diluted resin solution for surface pre-coating was prepared by dissolving resin in acetone, and it contained 3 wt% resin in 40 ml of acetone.…”

Section: Materials and Experimental Preparationmentioning

confidence: 99%

Effects of resin pre-coating on interfacial bond strength and toughness of laminar CFRP with and without short aramid fibre toughening

Wang

Ding

Wang

et al. 2020

Journal of Composite Materials

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The brittle adhesive layer in carbon fiber-reinforced polymer (CFRP) laminates was strengthened by using short aramid fibers in this study. To ensure the feasibility and effectiveness of short aramid fiber interfacial toughening at the interface between the carbon-fiber face sheets, the self-prepared short aramid fibre tissue and the wettability treatment technology with resin pre-coating were applied to enable short aramid fibres to be well embedded in the uneven regions in the CFRP fabrics with fibres oriented at 0° and 90° to form a strong pulling resistance. The ultimate load and the mode I interlaminar fracture toughness have been improved by 75% and 103.9% from the double cantilever beam mode I crack propagation tests, respectively. The reinforcing mechanisms within the “composite adhesive layer” as a result of short aramid fibres are discussed together with detailed scanning electron microscopy observations and comparison test results.

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Enhanced epoxy adhesion between steel plates by surface treatment and CNT/short-fibre reinforcement

Cited by 72 publications

References 28 publications

Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers

Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers

An experimental study on the physical and mechanical properties of B₄C/PI/AA6061 hybrid composites with various concentrations

Effects of resin pre-coating on interfacial bond strength and toughness of laminar CFRP with and without short aramid fibre toughening

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Enhanced epoxy adhesion between steel plates by surface treatment and CNT/short-fibre reinforcement

Cited by 72 publications

References 28 publications

Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers

Improving Interlaminar Fracture Toughness and Impact Performance of Carbon Fiber/Epoxy Laminated Composite by Using Thermoplastic Fibers

An experimental study on the physical and mechanical properties of B4C/PI/AA6061 hybrid composites with various concentrations

Effects of resin pre-coating on interfacial bond strength and toughness of laminar CFRP with and without short aramid fibre toughening

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An experimental study on the physical and mechanical properties of B₄C/PI/AA6061 hybrid composites with various concentrations