Results 1 to 10 of about 7,163 (162)

TRIBOELECTRIFIED MATERIALS OF FACEMASK TO RESIST COVID-19 [PDF]

open access: yesJournal of the Egyptian Society of Tribology, 2021
The present work discusses the use of triboelectrification to enhance the performance of the facemask made of polymeric fibers. Experiments were carried out to measure the electrostatic charge (ESC) generated from the friction of air with the facemask ...
A. S. Ali   +3 more
doaj   +1 more source

Combination of polyamines and polyamide to obtain photostable electrically conductive polymers

open access: yesResults in Materials, 2022
Polyaniline, polytoluidine, polyphenylenediamine were obtained by the method of oxidative polymerization of the corresponding amines. The kinetics and thermodynamics of this process were investigated.The polyamines were used to apply to the surface of ...
Adele R. Latypova, Mikhail V. Barannikov
doaj   +1 more source

Easily splittable hollow segmented-pie microfiber nonwoven material with excellent filtration and thermal-wet comfort for energy savings

open access: yesJournal of Materials Research and Technology, 2022
The segmented-pie composite fibers can be separated by high-pressure hydroentanglement to form a high-strength, lightweight microfiber nonwovens. Nowadays, it is an urgent problem to develop easily split composite fibers and reduce the energy consumption
Yongchao Duo   +7 more
doaj   +1 more source

Enhancing interfacial properties of carbon fiber/polyamide 6 composites by in-situ growing polyphosphazene nanotubes

open access: yeseXPRESS Polymer Letters, 2021
We explored a simple approach to grow needle-like polyphosphazene nanotubes (PZSNT) on carbon fibers (CFPZSNT) via in-situ polycondensation under mild reaction conditions, to form a PZSNT-based multiscale reinforcement.
X. Q. Zhang, G. L. Hu, L. Cen, C. H. Lei
doaj   +1 more source

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin

open access: yesEuropean Oral Research, 2021
Purpose: The aim of this study was to evaluate flexural strength, elastic modulus and dynamic mechanical analysis (DMA) of heat-polymerized polymethyl methacrylate resin, polyamide resin and glass fiber-reinforced polyamide resin.
Senem Ünver   +1 more
doaj   +1 more source

FRICTION AND WEAR OF EPOXY REINFORCED BY POLYAMIDE FIBERS [PDF]

open access: yesJournal of the Egyptian Society of Tribology, 2018
The present work investigates experimentally the effect of reinforcing epoxy matrix by polyamide fibers of different diameters on the friction and wear at dry sliding against steel surface.
F. Zahraa, W. Y. Ali
doaj   +1 more source

ELECTROSTATIC CHARGE GENERATED FROM THE CONTACT-SEPARATION AND SLIDING OF POLYAMIDE AND POLYESTER STRINGS BLENDED BY CARBON FIBERS ON COTTON [PDF]

open access: yesJournal of the Egyptian Society of Tribology, 2023
Generation of electrostatic charge (ESC) of textiles controls the quality and comfort of clothes.  The present work discusses the ESC generated from the contact-separation and sliding of polyamide and polyester strings blended by carbon fibers on cotton.
H. Suaad, M. K. Mohamed, W. Y. Ali
doaj   +1 more source

The investigation of Polyamide fiber as an additive in HMA [PDF]

open access: yesInternational Conference on Road and Rail Infrastructure, 2018
The number of heavy vehicles on traffic and traffic volume are extremely increasing nowadays. Consequently, maintenance costs are increasing too. So, durability becomes necessary in asphalt pavement design and construction. For this purpose, asphalt industry partners are investigating innovative technologies and additives for Hot Mix Asphalt (HMA ...
Erişkin, Ekinhan   +5 more
openaire   +3 more sources

Evaluation of seismic shear capacity of prestressed concrete containment vessels with fiber reinforcement

open access: yesNuclear Engineering and Technology, 2015
Background: Fibers have been used in cement mixture to improve its toughness, ductility, and tensile strength, and to enhance the cracking and deformation characteristics of concrete structural members. The addition of fibers into conventional reinforced
Young-Sun Choun, Junhee Park
doaj   +1 more source

Containment performance evaluation of prestressed concrete containment vessels with fiber reinforcement

open access: yesNuclear Engineering and Technology, 2015
Background: Fibers in concrete resist the growth of cracks and enhance the postcracking behavior of structures. The addition of fibers into a conventional reinforced concrete can improve the structural and functional performance of safety-related ...
Young-Sun Choun, Hyung-Kui Park
doaj   +1 more source

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