Article
Materials Science, Multidisciplinary
Chang-Mou Wu, Po-Chun Lin, Sanjay Kumar, Jieng-Chiang Chen
Summary: This study investigates the tensile creep behavior of hole-drilled self-reinforced polyethylene terephthalate (srPET) composites using digital image correlation (DIC) method and compares it with conventional mechanical tensile systems (MTS). The results show that DIC method provides a larger maximum strain value at the edge of the hole compared to MTS. The long-term creep behavior of the materials can be successfully described by an Arrhenius-type time-temperature superposition principle (TTSP).
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Review
Materials Science, Composites
Juntao Wang, Jun Tang, Dingding Chen, Suli Xing, Xuanyi Liu, Jingye Hao
Summary: With the development of self-healing polymers, it is now possible to have polymer-based composites with self-healing capabilities. This paper reviews the recent development of self-healing polymers and their applications in fiber-reinforced polymer composites. The self-healing composites are categorized into intrinsic and extrinsic based on their healing mechanisms, and the pros and cons of each type are discussed. Lastly, the future perspectives of intrinsic and extrinsic self-healing FRP composites are presented.
POLYMER COMPOSITES
(2023)
Article
Engineering, Civil
Jianzhe Shi, Xin Wang, Lei Zhang, Zhishen Wu, Zhongguo Zhu
Summary: A novel composite-wedge anchorage is proposed for prestressing FRP tendons. Experimental results demonstrate the effectiveness of the proposed anchorage in terms of tensile capacity, creep behavior, and fatigue life.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2022)
Article
Mechanics
Sanjay Kumar, Chang-Mou Wu, Wen-You Lai, Po-Chun Lin
Summary: This study found that the bearing strength of srrPET composites is primarily dependent on the W/D ratio, while the E/D ratio does not have a significant impact. Additionally, srrPET composites showed better fatigue cycles compared to srrPET-FR composites.
COMPOSITE STRUCTURES
(2021)
Article
Polymer Science
Payal Bakshi, Asokan Pappu, Dhiraj Kumar Bharti, Ravi Patidar
Summary: This study evaluates the accelerated weathering performance of injection moulded PP and LDPE composites reinforced with calcium rich waste resources. The results show that LDPE composites exhibit better visual stability and enhanced flexural properties after weathering. Accelerated weathering conditions significantly affect the visual appearance, physical and mechanical properties of the polymer composites.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Polymer Science
Bidita Salahuddin, Rahim Mutlu, Tajwar A. Baigh, Mohammed N. Alghamdi, Shazed Aziz
Summary: A novel vibration dampening polymer composite with smart thermoresponsive actuator was developed, showing high mechanical robustness and proven efficacy in active dampening of oscillatory vibration. The shape modification to a coiled structure and appropriate annealing of the reinforcing actuators directly influenced the vibration dampening capacity of the composite structure.
Article
Engineering, Multidisciplinary
Rafael A. M. Santos, Larissa Gorbatikh, Yentl Swolfs
Summary: Self-reinforced composites offer various advantages, but different commercial materials have different performance characteristics. This study compared the performance of several commercial self-reinforced materials and found that each material has its own strengths in different properties, suggesting that the best choice depends on the specific application. This paper can serve as a tool for initial screening of commercial self-reinforced composites for specific applications.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Manufacturing
Congmei Lin, Bing Huang, Zhijian Yang, Feiyan Gong, Xu Zhao, Liping Pan, Jianhu Zhang, Shijun Liu, Jiahui Liu, Jiang Li, Shaoyun Guo
Summary: By incorporating nano-TATB particles into PBX, significant improvements in mechanical properties such as storage modulus, strength, and toughness can be achieved. This enhancement is attributed to the nano effect of nanoparticles and the interlocking block formed on the rough surface of nano-TATB, providing stronger interfacial interaction.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Review
Chemistry, Multidisciplinary
Harsh Sharma, Sravendra Rana, Poonam Singh, Mikihiro Hayashi, Wolfgang H. Binder, Elisabeth Rossegger, Ajay Kumar, Sandra Schloegl
Summary: This article discusses the features and applications of fiber-reinforced vitrimer composites, highlighting their significance in achieving sustainable development goals.
Article
Polymer Science
Jose Antonio Butenegro, Mohsen Bahrami, Yentl Swolfs, Jan Ivens, Miguel Angel Martinez, Juana Abenojar
Summary: The study focused on the fiber distribution and mechanical, dynamic, and thermomechanical properties of composites manufactured using hot pressing. The viability of recycling and reuse route for preventing the deterioration of carbon fibers by employing polyamides and mechanically recycled carbon fiber-reinforced polymers as reinforcement was illustrated.
Article
Materials Science, Characterization & Testing
Yuhang Wu, Conglin Dong, Xiuqin Bai, Chengqing Yuan, Xiangjun Zhang
Summary: The study found that lignum vitae chips can improve the properties of thermoplastic polyurethane, such as hardness and elastic modulus, and reduce the coefficient of friction and wear. However, adding an excessive amount of lignum vitae chips leads to a decrease in material elasticity and elongation, and an increase in the coefficient of friction and wear.
Article
Materials Science, Ceramics
Xiaoxuan Tu, Lairong Xiao, Xiaojun Zhao, Zhenyang Cai, Ziyao Zhao, Delu Zeng, Sen Wang, Yuxiang Xiao
Summary: The microstructure and nanoindentation creep behavior of characteristic phases in TiC reinforced steel matrix composite after stabilizing heat treatments were investigated. The microhardness of the matrix and TiC particle were improved, and the dominant creep mechanism of the composite was dislocation movement. The micromechanical properties of the characteristic phases in the composite after TCC treatment were well matched, and the overall creep resistance of that was excellent.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Composites
Javad Ghorbani, Vahid Daghigh, Sadegh Rahmati, Mahdi Mahdian, Hamid Daghigh
Summary: Latania natural fibers have shown better mechanical performance in reinforcing polymer composites compared to jute fibers, but are affected by temperature changes. This study's results can be used as a benchmark for designing bio-composite structures using Latania natural fibers.
POLYMER COMPOSITES
(2021)
Article
Construction & Building Technology
Iranildo Barbosa da Silva Junior, Lourdes Maria Silva de Souza, Flavio de Andrade Silva
Summary: In this study, the creep behavior of sisal fiber cement based composites was investigated, revealing differences in mechanical properties under different fiber conditions and understanding the crack mechanisms during tensile and flexural tests, as well as the decrease in strength and toughness after creep tests.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Manufacturing
Milan Ferdinand, Michael Jerabek, Robert Vardai, Thomas Lummerstorfer, Claudia Pretschuh, Markus Gahleitner, Gabor Faludi, Janos Moczo, Bela Pukansky
Summary: The deformation and failure analysis of PP/elastomer/wood flour composites reveals that various local deformation processes occur during loading, with different energy consumption. These processes can interact and even result in an antagonistic effect on impact resistance. Shear yielding of the matrix is the most energy-efficient process. The presence of wood decreases shear yielding by hindering overall deformation and initiating other local processes such as debonding. The role of debonding is controversial as it may increase or decrease plastic deformation and impact resistance. Wood fracture does not significantly contribute to impact resistance. If impact resistance is important, PP cannot be reinforced with wood flour, and other methods like adding synthetic fibers are more suitable.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Chemical
Istvan Zoltan Halasz, Tamas Barany
PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING
(2018)
Article
Polymer Science
Daniel Vadas, Akos Kmetty, Tamas Barany, Gyoergy Marosi, Katalin Bocz
POLYMERS FOR ADVANCED TECHNOLOGIES
(2018)
Article
Polymer Science
Daniel Abel Simon, Istvan Zoltan Halasz, Jozsef Karger-Kocsis, Tamas Barany
Article
Engineering, Manufacturing
Katalin Bocz, Kata Eniko Decsov, Attila Farkas, Daniel Vadas, Tarnas Barany, Andras Wacha, Attila Bota, Gyorgy Marosi
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2018)
Article
Polymer Science
Daniel Abel Simon, David Pirityi, Peter Tamas-Benyei, Tamas Barany
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Andrea Kohari, Istvan Zoltan Halasz, Tamas Barany
Article
Polymer Science
Zoltan Kiss, Tamas Temesi, Eniko Bitay, Tamas Barany, Tibor Czigany
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Laszlo Jozsef Varga, Tamas Barany
Article
Chemistry, Physical
Hao Guo, Peizhi Ji, Istvan Zoltan Halasz, David Zoltan Pirityi, Tamas Barany, Zongchao Xu, Long Zheng, Liqun Zhang, Li Liu, Shipeng Wen
Article
Polymer Science
Daniel Abel Simon, Tamas Barany
Summary: In this study, thermomechanical devulcanization of ground tire rubber was conducted in a co-rotating twin-screw extruder at different barrel temperatures and screw speeds. The results showed that selective cross-link scission can be achieved without severe degradation of the main chains under certain conditions. Additionally, utilizing a two-step mixing process for preparing rubber mixtures based on natural rubber can improve mechanical properties.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Polymer Science
David Zoltan Pirityi, Tamas Barany, Kornel Poloskei
Summary: This research investigates the effects of nano-reinforcement materials on the mechanical properties of rubber samples. The study finds that precipitated silica can improve the properties of rubber, while a combination of graphene nanoplatelets and carbon black can effectively enhance the tensile strength and elongation at break of rubber. However, the addition of graphene nanoplatelets negatively affects the abrasion resistance of the samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Andrea Kohari, Tamas Barany
Summary: In this study, different types of thermoplastic elastomers were prepared using an internal mixer. The properties of thermoplastic polyurethanes (TPUs) made from prepolymers with different isocyanate content and chain extenders were investigated to select an appropriate TPU matrix for preparing thermoplastic vulcanizates (TPVs). TPVs were prepared by dynamic vulcanization with in situ produced TPU, and the rubber phase was acrylonitrile-butadiene rubber (NBR). The mechanical properties of the TPVs were analyzed, and it was found that TPVs with delayed action accelerator showed the highest tensile and tear strength and elongation at break. The study highlights the importance of selecting the appropriate TPU matrix for preparing TPVs with desired mechanical properties.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Daniel Abel Simon, Tamas Barany
Summary: In this study, we devulcanized ground tire rubber (GTR) using microwaves at different temperatures and heating rates. We evaluated the soluble content and cross-link density of the samples and determined the microwave energy and selectivity parameter during devulcanization. The results showed that lower temperatures and slower heating rates resulted in better devulcanization effects and higher selectivity. However, higher temperatures led to severe degradation despite achieving a higher degree of devulcanization. Additionally, introducing devulcanized GTRs to natural rubber-based mixtures using a two-step mixing method improved the mechanical properties, especially tear strength.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Chemical
Csenge Vamos, Ilona Racz, Tamas Barany, Alfred Menyhard, Botond Bela Marosfoi
Summary: We have developed a new solvent-based method to roughen the surface of polymer and studied the treated polypropylene (PP). The method involves three main steps: solvent treatment, drying, and peeling. We investigated the impact of process parameters such as immersion time, solvent and drying temperature on surface morphology. The structure formed on the surface is mainly affected by the temperature of the solvent and drying. We also examined the wetting behavior of the surfaces. The patterned surfaces showed superhydrophobic characteristics with high contact angle (>155 degrees) and low water contact hysteresis (<5 degrees). The addition of an effective nucleating agent to PP allowed for exceptional contact angles (>160 degrees) and adjustable spherulite sizes. This method is straightforward and scalable, making it suitable for mass production of superhydrophobic materials.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Laszlo Jozsef Varga, Akos Gorbe, Tamas Barany
Summary: In this study, four different grades of amorphous poly-alpha-olefin (APAO) were used to increase the toughness of drawn polypropylene (PP) tapes. The presence of APAOs facilitated the movement of PP molecules, reducing the work of drawing and increasing the melting enthalpy of the drawn specimens. The APAO with the highest molecular weight and low crystallinity level showed the greatest improvement in both tensile strength and strain-at-break, and this blend was used to produce continuously drawn tapes on a stretching line, exhibiting improved toughness.
