Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 311 - 335
Опубликована: Янв. 1, 2024
Язык: Английский
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Фев. 28, 2025
Abstract The interfacial bonding between fiber and matrix is very important for the mechanical properties of composites. This effort involved oxidizing C 3 N 4 to produce O‐C , which was employed improve thermal glass fiber/epoxy microstructure reinforcement mechanism modified composites (O‐C /GF/EP) were analyzed by SEM, contact angle, properties, dynamic analysis (DMA). results show that /GF/EP with 0.5 phr have best properties. interlaminar shear strength, tensile bending impact strength composite increased 12.3%, 15.6%, 15.3%, 14.7%, respectively, compared pure GF/EP When content 1.0 phr, storage modulus Tg 20.1% 4.44°C, respectively. Therefore, can be considered a candidate as an modifier Highlights Carbon wide range applications. used has abundant oxygen‐containing functional groups preparation process simple.
Язык: Английский
Процитировано
0
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Фев. 24, 2025
Abstract Electronic components produce severe electromagnetic radiation and heat, which affect their normal operation the health of humans. The prepreg material with domestic high strength modulus M55J carbon fiber (CF) as filler epoxy (EP) resin matrix was adopted. arrangement CF within modified by adjusting angle cross‐layup. Finally, effect on shielding thermal conductivity composites investigated. Based results, laminates a 90° cross exhibited an effectiveness 38 dB in X band, outperforming those other angles. issue uneven in‐plane has been alleviated angle. Its reached 20.8 W/(m K). thickness direction is around 1 This proves that does not laminates. through‐thickness performance primarily determined anisotropy CF. Prepreg cross‐ply configuration demonstrate better performances shielding. In this study, influencing factors layered structure interference (EMI) composite are discussed, can provide theoretical basis for structural design dual‐function both EMI Highlights Fabrication CFRP systematically varied orientations. Functional relationship between orientation CFs I 002 / 10 ratio (XRD). optimal its mechanism Improvement heat dissipation plane.
Язык: Английский
Процитировано
0
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Март 14, 2025
Abstract Based on the principle of automated addition and reduction yarn in three‐dimensional variable cross‐section braiding with an active feeder, this paper proposes a method for using “glue‐bonding yarn‐addition cutting yarn‐reduction.” Experiments involving glue‐bonding were conducted auto device. The effects blade angle, speed, position, fiber length, pre‐tension tested. A finite element model simulated damage mechanisms during process, experimental simulation results compared analyzed. study also investigated fracture at constrained end reduction. It was found that 70‐degree cut, lower pre‐tension, closer points to constraint end, shorter lengths significantly improved performance An experiment cyclic carbon fibers revealed increase force approximately 0.046 N per cycle. tensile resistance glued epoxy‐based UV‐curable adhesives under quasi‐static dynamic loading studied, showing good bonding capable withstanding tensions generated concludes is applicable braided technology, providing theoretical basis feeder achieve functions. Highlights Introduced yarn. has been established. unveiled mechanism shear fibers. Reveals yarn‐reduction sites. Provides optimizing performance.
Язык: Английский
Процитировано
0
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Апрель 1, 2025
Abstract To efficiently disperse graphene oxide (GO) in composite materials and fully leverage its unique chemical physical properties, the novel side‐chain liquid crystalline surfactant (SCLCS) has been synthesized. This SCLCS comprises a chiral mesogenic unit, nematic unit with hydroxy group, cyano specifically designed to modify GO sheets. The Mesogenic can join into crystal polymer matrix, further be compatible crystal. group react by bonding (SCLCS‐g‐GO) sheets matrix. possesses simple preparation process stable structure, which provides stability for overall structure. These components connected silicon oxygen backbone endow system more stability. structures comprehensive properties of compound SCLCS‐g‐GO SCLCS‐g‐GO/epoxy nanocomposites were analyzed through series tests, including POM, TGA, DSC, SEM, XRD, FTIR. Compared neat epoxy 3 wt% GO/epoxy composites, thermal possess obvious improvement. mechanical property measures confirm that different containing demonstrate enhanced flexural strength, modulus, impact strength. Highlights decreases van der Waals force between neighboring Incorporation induces better dispersion Excellent compatibility matrix SCLCS‐g‐GO. Powerful interfacial interaction layers improves nanocomposite.
Язык: Английский
Процитировано
0
Polymer Composites, Год журнала: 2023, Номер 45(1), С. 535 - 554
Опубликована: Окт. 10, 2023
Abstract Glass fiber‐reinforced polymer‐matrix (GFRP) composites are used to manufacture devices such as radomes, electrical insulators, and radar‐absorbing structures, many of which in applications with strict mechanical dielectric property requirements. As such, designs properties GFRP composite materials should be regularly improved guarantee their safe operation meet constantly evolving application In this study, glass fiber (GF) particles epoxy resin 128 (EP‐128) were high‐performance EP/GF‐X GF particle contents ranging from 5% 40%. An investigation into revealed that EP/GF‐20 specimens presented the best performance bending strength modulus reaching 159.68 MPa 6521.92 MPa, respectively, an average constant 4.862 within 10–10 5 Hz frequency range. A theoretical analysis specimens' constants using classic models based on Lichtenecker, Bruggeman, Jaysundere‐Smith, Maxwell‐Garnett rule‐of‐mixture equations indicated model Bruggeman equation provided closest measured values a maximum deviation less than −0.321% for EP/GF‐40 composites. This study provides feasible strategy control Highlights (EP/GF‐X) The manufacturing process was carefully controlled ensure uniform distribution orientation EP‐128 resin. manufactured effectively tailored by controlling content matrix. experimentally predicted various models. values.
Язык: Английский
Процитировано
9
Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 419 - 449
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
3
Polymer Composites, Год журнала: 2024, Номер 45(13), С. 11985 - 12000
Опубликована: Май 31, 2024
Abstract Three‐dimensional graphene architecture (3DGA) as reinforcement with successive effect has attracted intense attention in the field of polymer composites, while 3DGA also faces disadvantages weak interfacial adhesion matrices. The surface decoration molybdenum disulfide (3DGA@MoS 2 ) further promoted diffusion and penetration epoxy molecular for network aid resin transfer molding (RTM) technic. MoS transition nanolayer not only forms covalent bonding but mechanical interlocks epoxy, which effectively improved interface combination composite. Compared neat glass temperature ( T g tensile strength increased by 18°C 58.6%, well average friction coefficient wear rate decreased 84% 89%, respectively, low loading wt% 3DGA@MoS . Hence, 3D modified strategy provides a new insight manufacturing high‐performance epoxy‐graphene composites excellent tribological properties. Highlights A highly ordered interconnected was fabricated. serves interlayer, forming bond interlock. Incorporation enables rapid heat conduction load transfer. Bi‐interpenetrating structure/polymer endows good resistance. Improved comprehensive properties ascribe to strong adhesion.
Язык: Английский
Процитировано
3
Materials horizons, Год журнала: 2023, Номер unknown, С. 167 - 184
Опубликована: Янв. 1, 2023
Язык: Английский
Процитировано
7
Опубликована: Янв. 1, 2024
The increasing demand for self-healing materials across industries has propelled polymer composites to the forefront of material science. Notably, integration capabilities represents a groundbreaking stride in addressing persistent challenge damage mitigation and, consequently, extension composite structures' lifespan. This chapter provides comprehensive exploration processes composites, delving into mechanisms, materials, and recent developments. Beginning with brief description fundamental principles, this unravels various including microcapsule-based systems, vascular networks, intrinsic healing reactions. foundational understanding serves as crucial guide tailoring diverse applications aerospace, automotive, construction, beyond. features structures signifies transformative shift, offering tangible advantages terms maintenance, dependability, environmental sustainability. aims not only elucidate current state-of-the-art but also stimulate further research innovation. By examining specific strategies, it guides future endeavours, unlocking full potential these dynamic landscape Self-healing emerge merely solutions, unprecedented possibilities resilient sustainable structures.
Язык: Английский
Процитировано
2
Polymer Composites, Год журнала: 2023, Номер 44(9), С. 6194 - 6211
Опубликована: Июль 15, 2023
Abstract Recyclability and environmental safety have prompted research toward clean energy‐efficient manufacturing technologies for natural fiber‐reinforced composites. In the current investigation sisal/HDPE composites were fabricated using a novel energy time efficient microwave‐assisted molding (MAM) method. Sisal fibers successfully treated with alkali treatment (MAAT) at 640 W microwave power. For outdoor application effect of method on mechanical properties, water absorption, tribological behavior developed studied. The been found to absorb less by 45.28% as compared untreated (UT). recorded increase in tensile strength (36.5%), flexural (41.05%), hardness (4.38%) UT composites, which could be attributed effective partial removal non‐cellulosic content after from fiber surface. During wear test, composite was employed pin, abrasive paper (P1000) served counter surface pin‐on‐disc (POD) arrangement two‐body wear. SWR, COF, friction force values reduced about 61.72%, 33.33%, 34%, respectively, those minimum normal load (10 N) sliding speed (0.5 m/s) due positive MAAT. Scanning electron microscope used examine worn understand mode mechanism. Highlights Novel fibers. MAAT increased roughness. Microwave‐assisted fabrication absorption followed Pseudo Fickian diffusion Polymeric had optimum performance.
Язык: Английский
Процитировано
6