Interfacial Adhesion of a Semi-Interpenetrating Polymer Network-Based Fiber-Reinforced Composite with a High and Low-Gradient Poly(methyl methacrylate) Resin Surface

Khan, Aftab Ahmed; Perea-Lowery, Leila; Al-Khureif, Abdulaziz Abdullah; AlMufareh, Nawaf Abdulrahman; Eldwakhly, Elzahraa; Säilynoja, Eija; Vallittu, Pekka K.

doi:10.3390/polym13030352

Cited by 8 publications

(1 citation statement)

References 28 publications

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“…Due to the action of repeated load, the stiffness of the composite can be continuously measured during damage accumulation and expansion and does not affect the properties of the material [22]. erefore, rigidity is a test parameter that can well reflect the properties of composites, and composites have anisotropic properties.…”

Section: Residual Stiffness Of Compositesmentioning

confidence: 99%

Application and Performance Discussion of Fiber-Reinforced Composite Materials in Sports Equipment Based on Image Processing Technology

Liu

2022

Scientific Programming

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Fiber reinforced composites can meet the needs of lightweight, heavy load, long-span, high strength, and modern structures and work under strict conditions. Therefore, it is widely used in various fields. Sports equipment generally cannot meet the requirements of high-strength use, so there is an urgent need for new fiber materials to make these instruments. Aiming at improving the efficiency of measurement and the reliability of measurement results, this paper studies the quantitative characterization method of the microstructure of short fiber reinforced composites. The swept-frequency OCT system is a newly developed high-resolution biomedical imaging system. The method of this paper is to study the performance parameters of swept frequency OCT system, deduce the application of image processing technology in fiber material detection, and then study the detection of residual strength and residual stiffness of composites, so as to obtain a composite material detection method that can be popularized. On this basis, image processing and performance analysis of the composites were carried out, and the composites were tested. And the prospect of application in this field has been analyzed. The experimental results show that better fiber length can be obtained by this method, and the maximum relative error is only 4.5%, thus ensuring the accurate determination of fiber length. Calculations were carried out using the experimental data, and the results showed that the performance of the sports product increased from 15.4% to 48.6% with the graphite-rubber composite. Using this material can improve the comprehensive performance of sports equipment by 2.1%∼4.5%.

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Section: Residual Stiffness Of Compositesmentioning

confidence: 99%

Application and Performance Discussion of Fiber-Reinforced Composite Materials in Sports Equipment Based on Image Processing Technology

Liu

2022

Scientific Programming

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Low stress creep response of PTFE sealants applied to PEM fuel cells

Kumar,

Koorata

2024

J of Applied Polymer Sci

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Viscoelastic properties of polytetrafluoroethylene (PTFE) play a crucial role in forecasting its long‐term behavior in engineering applications. An attempt is made to explore the viscoelastic properties of PTFE sealants that are utilized in polymer electrolyte membrane fuel cell (PEMFC). It is to be noted that PTFE sealants are vulnerable to creep under constant loading at elevated temperatures. Moreover, the creep of sealants will lead to leakage of reactants from the cell, which affects the performance of PEMFC. PTFE is an excellent choice as a sealant material in low‐temperature polymer electrolyte membrane fuel cell (LT‐PEMFC), which operates in the temperature range of 60–80°C. PTFE can be prominently used as sealants in high‐temperature polymer electrolyte membrane fuel cell (HT‐PEMFC), as it possesses no significant change in its physical properties within the temperature range of −150 to 300°C along with the working conditions of HT‐PEMFC. In LT‐PEMFC, the sealants will typically be subjected to low stresses in the range of 1–5 MPa. In this article, the creep response of PTFE sealant material is extensively studied at various temperatures of 25 (room temperature), 35, 45, 55, and 65°C and at three stress levels of 2, 3, and 4 MPa. The time–temperature superposition principle is utilized to develop master curve at a reference temperature of 25°C, to forecast long‐term creep characteristics of PTFE sealants. Moreover, the master curve for creep compliance is developed for 4.5 h.

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Wear behavior at margins of direct composite with CAD/CAM composite and enamel

et al. 2023

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Objectives The aim was to investigate the two-body wear at the marginal area between direct filling composites and substrate of CAD/CAM composites or enamel. Materials and methods Flat specimens were prepared from CAD/CAM composites (CERASMART 270 and SFRC CAD) and bovine enamel. A box-shaped cavity cut into CAD/CAM composites and enamel surfaces was made. The prepared cavity in CAD/CAM composites was treated with a primer, while in enamel, the cavity was treated with an adhesive. Three conventional composites (Universal Injectable, G-aenial A’Chord, and Filtek Bulk Fill) and one short fiber composite (everX Flow) were placed and cured in the prepared cavities. A two-body wear test was conducted with 15,000 chewing cycles using a dual-axis chewing simulator. The specimens (n = 5/per group) were positioned to produce wear (load = 20 N) across the marginal area between filling composites and substrates. The wear depth was analyzed using a 3D optical profilometer. SEM was used to evaluate the wear behavior and margins between the filling and substrate materials. Results All composites used displayed different wear behavior (20–39 µm) (p < 0.05). The highest wear values were recorded for A’Chord and Filtek, while the lowest values were for Injectable and CERASMART 270. The data analysis showed that the wear behavior of substrate materials depends on the filling materials used at margins (p < 0.05). The marginal breakdown was seen only between bovine enamel and filling composites. Conclusions The use of the two-body wear simulation method revealed important information about the behavior of the filling composites at the marginal area with CAD/CAM composites or bovine enamel substrates. Clinical relevance The marginal breakdown related to the material combination at the bonding region.

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Interfacial Adhesion of a Semi-Interpenetrating Polymer Network-Based Fiber-Reinforced Composite with a High and Low-Gradient Poly(methyl methacrylate) Resin Surface

Cited by 8 publications

References 28 publications

Application and Performance Discussion of Fiber-Reinforced Composite Materials in Sports Equipment Based on Image Processing Technology

Application and Performance Discussion of Fiber-Reinforced Composite Materials in Sports Equipment Based on Image Processing Technology

Low stress creep response of PTFE sealants applied to PEM fuel cells

Wear behavior at margins of direct composite with CAD/CAM composite and enamel

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