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Structure, Properties and Applications of Nanocomposites and Polymer Based Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: 20 December 2025 | Viewed by 1861

Special Issue Editor


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Guest Editor
School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
Interests: structural design and fabrication technology of advanced composites; aerospace foldable/deployable flexible composite structures (large elastic deformation, large shape memory deformation, inflatable deployment, etc.); composite structures for morphing applications; constitutive of braided composites; damage failure behavior of composite structures; 3D and 4D printed composites; multi objective optimization design
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Special Issue Information

Dear Colleagues,

Nanocomposite materials are composed of resin, rubber, ceramics, and metals, which act as the continuous phase, and nanoscale metals, semiconductors, rigid particles and other inorganic particles, fibers, carbon nanotubes, and other modifiers, which act as the dispersed phase. Through appropriate preparation methods, the modifiers are uniformly dispersed in matrix material to form a composite system containing nanoscale materials. This system of materials is called nanocomposite materials. Polymer materials, also known as polymer materials, have polymer compounds as the matrix and other additives (additives). Composite materials are widely used in aerospace, defense, transportation, sports and other fields due to their excellent comprehensive performance, especially their designability. Nanocomposites and polymer composites are the most attractive parts among them. It is particularly necessary to conduct research on the structures, properties, and applications of nanocomposites and polymer-based materials, as this will contribute to the development of advanced composite material technology.

Dr. Jiangbo Bai
Guest Editor

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Keywords

  • nanocomposites
  • polymer-based materials
  • structure
  • properties
  • applications
  • composites

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Published Papers (2 papers)

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Research

22 pages, 15990 KiB  
Article
Study on the Transverse Properties of T800-Grade Unidirectional Carbon Fiber-Reinforced Polymers
by Hao Wang, Xiang-Yu Zhong, He Jia, Lian-Wang Zhang, Han-Song Liu, Ming-Chen Sun, Tian-Wei Liu, Jian-Wen Bao, Jiang-Bo Bai and Si-Cheng Ge
Materials 2025, 18(4), 816; https://doi.org/10.3390/ma18040816 - 13 Feb 2025
Viewed by 779
Abstract
This paper focuses on the transverse tensile and compressive mechanical properties of T800-grade unidirectional (UD) carbon fiber-reinforced polymers (CFRPs). Firstly, transverse tensile and compressive tests were conducted on UD composite laminates, yielding corresponding stress–strain curves. The results indicated that, for tension, the transverse [...] Read more.
This paper focuses on the transverse tensile and compressive mechanical properties of T800-grade unidirectional (UD) carbon fiber-reinforced polymers (CFRPs). Firstly, transverse tensile and compressive tests were conducted on UD composite laminates, yielding corresponding stress–strain curves. The results indicated that, for tension, the transverse tensile modulus, strength, and failure strain were 8.7 GPa, 64 MPa, and 0.74%, respectively, whereas for compression, these values were 8.4 GPa, 197.1 MPa, and 3.43%, respectively. The experimental curves indicated brittle failure under tensile loadings and significant plastic failure characteristics under compressive loading for the T800-grade composite. Subsequently, fractography experiments were performed to observe the fracture morphologies, revealing that tensile fractures were through-thickness cracks perpendicular to the loading direction, while compressive fractures were at a 52° angle to the loading direction. Finally, a micromechanical finite element method (FEM) was employed to simulate the tensile and compressive failure processes of the unidirectional composite, and the tensile and compressive properties were predicted. The simulation results showed that under both tensile and compressive loadings, interfacial elements failed first, causing stress concentration and damage to nearby resin elements. The damaged resin and interfacial elements expanded and connected, leading to ultimate failure. The predicted tensile stress–strain curve exhibited linear characteristics consistent with the experimental results in most regions but showed more pronounced nonlinearity before ultimate failure. The predicted compressive stress–strain curve aligned well with the experimental results in terms of nonlinearity. The predicted elastic modulus, failure strengths, and failure strains were in good agreement with the experimental results, with differences of 1.1% (tension modulus), 3.2% (tension strength), and 13.5% (tension failure strain), and 3.6% (compression modulus), −8.5% (compression strength), and −3.8% (compression failure strain). The final failure morphologies were in good accordance with the fractography experimental observations. Full article
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14 pages, 4861 KiB  
Article
Mechanical and Thermal Properties of 3D-Printed Continuous Bamboo Fiber-Reinforced PE Composites
by Haiyu Qiao, Qian Li, Yani Chen, Yayun Liu, Ning Jiang and Chuanyang Wang
Materials 2025, 18(3), 593; https://doi.org/10.3390/ma18030593 - 28 Jan 2025
Viewed by 825
Abstract
Continuous fibers with outstanding mechanical performance due to the continuous enhancement effect, show wide application in aerospace, automobile, and construction. There has been great success in developing continuous synthetic fiber-reinforced composites, such as carbon fibers or glass fibers; however, most of which are [...] Read more.
Continuous fibers with outstanding mechanical performance due to the continuous enhancement effect, show wide application in aerospace, automobile, and construction. There has been great success in developing continuous synthetic fiber-reinforced composites, such as carbon fibers or glass fibers; however, most of which are nonrenewable, have a high processing cost, and energy consumption. Bio-sourced materials with high reinforced effects are attractive alternatives to achieve a low-carbon footprint. In this study, continuous bamboo fiber-reinforced polyethylene (CBF/PE) composites were prepared via a facile two-step method featuring alkali treatment followed by 3D printing. Alkali treatment as a key processing step increases surface area and surface wetting, which promote the formation of mechanical riveting among bamboo fibers and matrix. The obtained treated CBF (T-CBF) also shows improved mechanical properties, which enables a superior reinforcement effect. 3D printing, as a fast and local heating method, could melt the outer layer PE tube and impregnate molten plastics into fibers under pressure and heating. The resulting T-CBF/PE composite fibers can achieve a tensile strength of up to 15.6 MPa, while the matrix PE itself has a tensile strength of around 7.7 MPa. Additionally, the fracture morphology of printed bulks from composite fibers shows the alkali-treated fibers–PE interface is denser and could transfer more load. The printed bulks using T-CBF/PE shows increased tensile strength and Young’s modulus, with 77%- and 1.76-times improvement compared to pure PE. Finally, the effect of printing paraments on mechanical properties were analyzed. Therefore, this research presents a potential avenue for fabricating continuous natural fiber-reinforced composites. Full article
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