Results 41 to 50 of about 105,348 (313)
Conductivity of suspended graphene at the Dirac point [PDF]
Phys. Rev. B 86, 165413 (2012), 2012 We study transport properties of clean suspended graphene at the Dirac point. In the absence of the electron-electron interaction, the main contribution to resistivity comes from interaction with flexural (out-of-plane deformation) phonons. We find that the phonon-limited conductivity scales with the temperature as $T^{-\eta}, $ where $\eta$ is the ...
arxiv +1 more source
MATEC Web of Conferences, 2017 In the present investigation, we used two types of thermoset resins (epoxy resin and phenol formaldehyde resin) with carbon fiber (CF) to produce composite materials.
Fouda Hany, Guo Lin, Elsharkawy Karim
doaj +1 more source
Cailiao gongcheng, 2023 The carbon nanotube (CNT)-polyetherimide (PEI) was successfully grafted onto the surface of carbon fibers (CF) through chemical grafting method for constructing a CF-g-CNT reinforcing phase. Results show the construction of CF-g-CNT fiber can effectively
BAI Jiashe +6 more
doaj +1 more source
Kinetic and chemorheological modeling of thermosetting polyurethanes obtained from an epoxidized soybean oil polyol crosslinked with glycerin [PDF]
arXiv, 2022 Thermosetting polyurethanes were obtained using an aromatic isocyanate and a hydrophobic polyol formulation obtained from epoxidized soybean oil (ESO) crosslinked with glycerin. A systematic DSC analysis of the effect of catalyst type, crosslinker concentration, isocyanate index and ESO crystallization on the cure kinetics was conducted.
arxiv
Journal of Applied Polymer Science, Volume 140, Issue 2, January 10, 2023., 2023 For graphene/PP nanocomposites that contain graphene agglomeration, we construct a two‐scale geometrical model including graphene‐rich and graphene‐poor regions. The volume fraction of graphene agglomerates is assessed by the shear yield strength. To take into account the influence from interface between graphene and PP, we build a “coated filler ...
Han Du +3 more
wiley +1 more source
Journal of Oral Biology and Craniofacial Research, 2022 Objective: The present study aimed to evaluate and compare the flexural strength and impact strength of heat-cured acrylic/Polymethyl methacrylate (PMMA) denture base resin and 3D printed denture base resin.
Mayank Chhabra +3 more
doaj
Effects of Thermal Modification on the Flexure Properties, Fracture Energy, and Hardness of Western Hemlock [PDF]
arXiv, 2023 This study investigates the effect of thermal modification on the flexural properties, transverse fracture energy, and hardness of western hemlock, a material which is finding increasing applications in construction. Flexure tests on specimens featuring longitudinal and transverse grains showed that thermal modification at 167C slightly improves the ...
arxiv
The relation between impact strength and flexural strength of dental materials
Journal of the Mechanical Behavior of Biomedical Materials, 2021 The aim of this study was to investigate whether there is a relation between impact strength and flexural strength of different composite and ceramic materials used in dental restorations.The three-point-bending test was used to determine the flexural strength and flexural modulus, and the Dynstat impact test was used to determine the impact strength ...
Niek de Jager +5 more
openaire +4 more sources
Evaluation the Effect of Fiber Reinforcement Materials on Flexural Strength of Heat Cured Denture Based Resin Materials [PDF]
Al-Rafidain Dental JournalAims: To assess the effect of fiber reinforcement materials on the flexural strength of heat-cured denture-based resin. Materials and Methods: A sample of heat-cured acrylic resin was created and divided into a control group (heat-cured with no fiber ...
Reem M. Arif +2 more
doaj +1 more source
Practical Analysis of Permeable Concrete Properties with Polypropylene Fiber Addition [PDF]
Congresso Brasileiro do Concreto - IBRACON 2020, 2022 One of the recent approaches used to minimize the impacts of the growth of impermeable areas in urban centers is permeable flooring. Permeable floors can be made of concrete and are called permeable concrete. This research aims to analyze the use of polypropylene fibers in the mixture of permeable concrete to assess whether the fibers significantly ...
arxiv