Article
Forestry
Liqing Wei, Jed Cappellazzi, Mark Manning, Armando G. McDonald, Skyler Foster, Jeffrey J. Morrell
Summary: This study found that coextruded WPC decking is more resistant to weathering under sub-tropical conditions, possibly due to the cap layer reducing oxygen availability. The wood components in the coextruded WPC cap layer are encapsulated by plastic, making them less susceptible to weathering compared to uncapped WPC, resulting in relatively better durability.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Mengfei Zhang, Dong Wang, Ting Li, Jie Jiang, Huiyu Bai, Shibo Wang, Yang Wang, Weifu Dong
Summary: In this study, a phytic acid-based flame retardant (AMPA) was synthesized and coated on wood surfaces, leading to an improvement in the wood's flame retardancy. Additionally, AMPA also exhibited antimicrobial and thermal insulation functions. Therefore, this work provides a feasible method for preparing flame-retardant wood-based materials for diversified applications.
Review
Forestry
Christian Huber, Magdalena Langmaier, Alexander Stadlmann, Eduard Hochbichler, Maximilian Grabner, Alfred Teischinger, Johannes Konnerth, Michael Grabner, Ulrich Mueller, Maximilian Pramreiter
Summary: This study identified eight possible alternative tree species to substitute Norway spruce, which can potentially prevent economic loss in European forests. The selection process combines material selection principles and available wood material data to evaluate the suitability and potential of these alternative species.
ANNALS OF FOREST SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jile Li, Ruili Huo, Wenyi Liu, Hai Fang, Lei Jiang, Ding Zhou
Summary: Polyvinyl chloride (PVC) based wood-plastic composites have gained popularity in civil construction and garden engineering due to their advantages of weather resistance, easy processing, energy conservation, and environmental protection. This study used the differential scanning calorimetry (DSC) method to measure the glass transition temperature of the WPC and conducted mechanical property tests under different temperatures to investigate the effects of temperature on the material.
FRONTIERS IN MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Yuxiang Huang, Qiuqin Lin, Feng Fu, Lanying Lin, Wenji Yu
Summary: Developing efficient and eco-friendly methods for manufacturing structural biomaterials is crucial for environmental sustainability. This study demonstrated the use of hydro-mechanical pretreatment, resin impregnation, and hot pressing to create high-performance wood-based composites (WC) using rapidly growing natural wood. The study showed that water content significantly impacts the physical and chemical properties of wood and plays a crucial role in preserving wood cell integrity during subsequent mechanical processes. The resulting WC exhibited superior strength and dimensional stability compared to natural wood and typical wood-based composites.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Forestry
Mengruo Wu, Xiangna Han, Zhenfang Qin, Zhiguo Zhang, Guanglan Xi, Liuyang Han
Summary: This study developed a quasi-nondestructive physical-mechanical evaluation technique for archaeological wood using a thermomechanical analyzer on the representative samples from the Nanhai No. 1 shipwreck. Results showed that the bending strength of waterlogged archaeological wood decreased with decay degree, and the linear expansion coefficients in archaeological wood were significantly higher than those in sound wood. Fourier transform infrared analysis indicated that the differences in physical-mechanical properties between archaeological wood and sound wood were mainly due to the decomposition and loss of hemicellulose in archaeological wood.
Article
Nanoscience & Nanotechnology
Adam Sikora, Milan Gaff, Robert Nemeth
Summary: This study focuses on the impact of various factors on the properties of materials in the elastic and plastic regions of layered wood-based composites, highlighting the importance of thickness, densification, and nonwood components in the composite materials.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Linfeng Zhang, Yingfan Wang, Boyin Ding, Jiaming Gu, Neven Ukrainczyk, Jingming Cai
Summary: This study aims to develop geopolymer-based composites for geothermal energy applications. The addition of silicon carbide (SiC) powder was found to improve the compressive and flexural strength of geopolymer composites, while the influence of SiC particles was insignificant. The combined application of SiC powder and SiC particle increased the thermal conductivity of geopolymer composites, making it a suitable material for geothermal energy applications. The addition of silicon carbide was also concluded to improve the heat exchange rate and heat utilization efficiency of energy piles.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Olga Bytner, Michal Drozdzek, Agnieszka Laskowska, Janusz Zawadzki
Summary: The thermal modification of black poplar wood in a nitrogen atmosphere improves its compressive strength and modulus of elasticity during bending, but reduces its modulus of rupture.
Article
Materials Science, Ceramics
Yunhai Zhang, Yongsheng Liu, Liyang Cao, Hui Fang, Bin Liu, Yejie Cao, Jing Wang, Jian Chen, Yu Pan
Summary: The study developed a three-dimensional micro-pipeline preform based on high thermal conductivity fibers for the preparation of structure-function integrated C/SiC composites, showing high thermal conductivity and bending strength. However, the bending strength was slightly lower compared to other composite materials, but fine control over the component and microstructure may provide higher value in the future.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
T. Li, Z. Y. Liu, Y. N. Zan, X. Y. Liu, W. G. Wang, D. Wang, B. L. Xiao, Z. Y. Ma
Summary: The SiC coating on graphite flake significantly enhanced the performance of SiC@G(f)/6063Al composites, including bending strength and thermal conductivity. The SiC coating played a positive role in both the processing of graphite flakes and the performance of the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Sebastian Dahle, Kavyashree Srinivasa, Jure Zigon, Arnaud Maxime Cheumani Yona, Georg Avramidis, Wolfgang Vioel, Marko Petric
Summary: The use of wood-based materials in building and construction is increasing as environmental concerns grow. Metal reinforcements are commonly used to enhance the mechanical properties of wooden structural elements. The mechanical joint between wood and metal is crucial for achieving the desired benefits. This study investigates the use of non-thermal air plasma pretreatments for wood-metal joints and evaluates the effect of different adhesive systems on the bond strength. The findings contribute to developing more sustainable and efficient construction practices.
FRONTIERS IN MATERIALS
(2022)
Article
Engineering, Biomedical
Raluca Ghelbere, Nicoleta Ilie
Summary: This study assessed the applicability of the Weibull model for resin-based composites (RBC) and determined the minimal sample number needed for an accurate Weibull representation. The results showed that the Weibull model could predict the results of uniaxial tests accurately, but misestimated the results of biaxial tests. Increasing the sample size improved the fit of the data to the Weibull distribution.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Tao Feng, Mingde Tong, Shuotian Yao, Hejun Li, Shifeng Wen, Hongjiao Lin
Summary: Composites based on hafnium carbide reinforced with continuous naked carbon fiber, with and without PyC interface treatment, were prepared at low temperature. Results showed that samples with PyC interface had better cyclic ablation resistance and lower decrease in bending strength, attributed to the protective and weakening effects of PyC interface on fiber and fiber/matrix interface.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Manufacturing
Bright Asante, Hanzhou Ye, Martin Nopens, Goran Schmidt, Andreas Krause
Summary: Geopolymer wood composites (GWC) serve as a green alternative to Portland cement wood composites in construction, and the wood's initial moisture content affects the material properties of GWC. The study found that using wood with higher moisture content resulted in more structurally bound water in the GWC, while using dry wood led to higher density, compressive strength, and lower porosity in the composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)