Article
Chemistry, Physical
George Zardalidis, Filippos Farmakis
Summary: Random appearance of micro short circuits and voltage noise has been observed in solid polymer electrolyte high voltage cathode cells with lithium metal anodes, as well as in lower operation voltages of LiFePO4 cathode cells. A systematic study is conducted to determine potential causes and prevention methods of voltage noise by examining the effects of the cathode, polymer electrolyte, and anode separately. The study shows that relying solely on the viscoelastic nature of PMMA-PEO blend electrolytes cannot prevent the occurrence of voltage noise.
ADVANCED ENERGY MATERIALS
(2023)
Article
Polymer Science
K. Jaidev, Manoranjan Biswal, Smita Mohanty, Sanjay K. Nayak
Summary: The study aimed to identify and formulate a ternary blend from polymers recovered from keyboard waste, improving mechanical, thermal, and morphological characteristics. The impact strength and thermal stability of the blends were enhanced, with salami structures observed in the morphology after the addition of ABS/HIPS blends.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Materials Science, Textiles
Bhavyashri Shetty, S. R. Yashodha, Jobish Johns
Summary: This paper presents the use of a cost-effective, eco-friendly, and highly efficient adsorbent for the removal of dye from water. The study focuses on the potential of chitosan/cellulose blend to remove malachite green (MG) from aqueous solution. Results show that maximum adsorption occurs within 30 minutes of the experiment and the adsorption isotherm fits the Langmuir and Freundlich equations. The chitosan/cellulose blend is found to be a cost-effective choice for removing MG.
FIBERS AND POLYMERS
(2023)
Article
Chemistry, Physical
Xia Dayu, Liu Mingxing, K. R. Ansari, Ambrish Singh
Summary: This paper deals with the synthesis and characterization of a novel nano polymer, n-ZnO-AVA, using three mono-mers. The inhibitive performance of n-ZnO-AVA on J55 steel in a corrosive solution was evaluated, and the adsorption behavior was found to be both physical and chemical. The results suggest that n-ZnO-AVA has a strong corrosion inhibitive effect on J55 steel.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Mechanical
Yan Peng, Caiyi Liu, Ningning Wang
Summary: The study focuses on the application of the deforming-quenching-partitioning-tempering (D-Q-P-T) process in medium carbon steel, analyzing the impact of heat treatment parameters on the microstructure and mechanical properties. The mechanism for improving the strength and plasticity of the steel was discussed, resulting in an increase in strength by 57.77 MPa and elongation by 5% compared to the traditional Q-P-T process.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2021)
Article
Engineering, Industrial
Huachao Yang, Wen Zhang, Xincun Zhuang, Zhen Zhao
Summary: The paper focuses on the r -value of low/medium carbon steel plates under different loading conditions and summarizes the asymmetry and evolution rules. It is found that the r -value decreases with strain in uniaxial loading, while it increases with strain in uniaxial compression. Viscoplastic self-consistent simulation reveals that this phenomenon is related to the evolution of grain shape and texture.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Forestry
TarickC Chahade, Kay-Uwe Schober
Summary: This paper investigates axial connectors in roundwood truss structures to promote the use of roundwood in addition to commonly used rectanglar timber products. The study focuses on glued-in threaded rods bonded parallel to grain in softwood and explores the use of resin-bonded polymer concrete to enhance the connection technique. The results show that the modified bonded-in rod connection has a larger capacity and can be used in higher moisture content applications.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2023)
Article
Materials Science, Multidisciplinary
Florina Branzoi, Adriana Baran, Simona Petrescu
Summary: In this study, a new composite polymer coating N-methylpyrrole-Triton-X100/N, N,N-diethylaniline (NMPY-TRX100/NNDEA) was synthesized on carbon steel type OL 37 electrode for corrosion protection using an electrodeposition method. The surfactant Triton-X100 played a significant role in improving the corrosion protection performance of the composite by impeding the penetration of corrosive ions. The PNMPY-TRX100/PNNDEA coatings exhibited good anticorrosion protection of OL 37 in corrosive solutions, with corrosion rates around nine times lower than uncoated electrodes and a corrosion protection yield of over 90%.
Article
Construction & Building Technology
Jamshid Esmaeili, Keyvan Andalibi, Osman Gencel, Farshid Khosravi Maleki, Vahid Arab Maleki
Summary: The bond-slip behavior between matrix and fibers highly depends on the geometric and mechanical characteristics of fibers. The study found that there are different mechanisms in the behavior of fibers depending on the diameter and angle of the fibers, with variations in pull-out force observed for fibers with different diameters and hook angles.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Mechanics
Zheng Liu, Xin Wang, Ronald E. Miller, Jiaqi Hu, Xu Chen
Summary: Research on the fracture properties of 16MND5 steel under different constraint conditions showed that crack depth and specimen thickness have a significant impact on fracture properties. This study developed constraint dependent R-curves and initiation fracture toughness for the steel, as well as a new methodology to quantify the 3D constraint effect.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Tianqi Chen, Mengjin Chen, Jinyu Pi, Chaoyang Fu
Summary: Compared with small organic molecules, polymer corrosion inhibitors have more active adsorption centers and stronger self-assembly film-forming ability, making them a hot research topic in corrosion field. In this study, two modified polyamides were synthesized using low-cost materials and self-assembled on steel substrate as polymeric inhibitors. The results showed that the modified polyamides exhibited remarkable corrosion resistance and reduced the corrosion degree of the steel by forming self-anchored polymeric film.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
A. Y. Yassin, A. M. Abdelghany, M. M. Shaban, Y. M. Abdallah
Summary: In this study, a polymer blend filled with gold nanoparticles was synthesized and utilized as a corrosion inhibitor for carbon steel in a 5% sulfamic acid solution, showing up to 91.3% inhibition efficiency. The inhibition mechanism followed Langmuir adsorption isotherm, with quantum chemical computations proving the effectiveness of the nanocomposite. The experimental and computational results demonstrated a significant agreement, indicating the efficiency of the composite as a corrosion inhibitor.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Polymer Science
Tianqi Chen, Mengjin Chen, Chaoyang Fu
Summary: Polymer corrosion inhibitors show better anti-corrosion performance than small organic molecules in neutral medium, with molecular weight having a significant impact on performance. Among the three kinds of modified polyethyleneimine (PEPA) inhibitors synthesized in this study, PEPA with a molecular weight of 1800 exhibited the best inhibition efficiency for Q235 carbon steel in neutral medium.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Florina Branzoi, Marius Alexandru Mihai, Simona Petrescu
Summary: A novel composite polymer coating was prepared on carbon steel using electrochemical techniques, which improved corrosion protection by obstructing the penetration of sulfate ions, achieving high protection efficiency and reduced corrosion rate.
Article
Materials Science, Multidisciplinary
Jie Xu, Tong Sun, Xiaodong Wen, Weixin Wang, Xuan Liu
Summary: This paper investigates the fracture toughness of compact tensile (CT) specimens with varying in-plane constraints. Experimental tests and numerical simulations are conducted to measure the J-R curves and analyze the fracture mechanism. The results show that increasing crack lengths lead to stronger in-plane constraints and a decrease in J-R curves. The GTN model is used to predict the J-R curves under different constraints. The study reveals that both in-plane and out-of-plane constraints have an impact on the J-R curves, and there is an interaction between them. The calibrated GTN model provides accurate predictions and proves to be a useful tool for assessing material fracture toughness.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)