Results 91 to 100 of about 1,083,791 (297)

METHOD FOR PRODUCING THERMOSETTING PHENOLIC RESINS AND PHENOLIC RESINS OBTAINABLE BY THE METHOD [PDF]

open access: yes, 2018
The present invention relates to a method for producing thermosetting phenolic resins as well as thermosetting phenolic resins. In particular, the invention relates to a method for producing thermosetting phenolic resins, comprising at least one ...
Frei, Reto   +6 more
core   +1 more source

Digital Light Processing of Thermoplastic Poly(methyl methacrylate) Photoresin Combined With Solvent Vapor Smoothing

open access: yesAdvanced Engineering Materials, EarlyView.
A thermoplastic PMMA‐based photoresin enables high‐resolution DLP printing followed by solvent‐vapor smoothing. The treatment reduces staircase‐induced surface roughness from 2.33 µm to 129 nm and increases visible‐light transmittance from approximately 30% to 80%, providing a route toward transparent PMMA components for rapid prototyping and non ...
Rozhin Heydarpour   +5 more
wiley   +1 more source

Effect of preheating on the film thickness of contemporary composite restorative materials

open access: yesJournal of Dental Sciences, 2014
Background/purpose: Recently, the placement of composite materials at an elevated temperature has been proposed in order to increase their flow for better adaptation in cavity walls. The aim of this in vitro study was to evaluate the effect of preheating
Dimitrios Dionysopoulos   +3 more
doaj   +1 more source

Thermal Expansion of Composite Resins and Sealants [PDF]

open access: yes, 1979
Linear thermal coefficients of expansion (α) of seven commercial composite resins and four pit and fissure sealants were determined between 0 and 60°C on a thermomechanical analyzer. The thermal expansion curves obtained were nonlinear.
J.M. Powers   +5 more
core   +1 more source

Influence of Particle Shape and Size in Copper‐Based Low‐Temperature Metallization Paste for Solar Cells

open access: yesAdvanced Engineering Materials, EarlyView.
Particle morphology controls the balance between printability and electrical connectivity in low‐temperature AgCu/Ag metallization pastes. Flake‐shaped AgCu particles form extended low‐resistance contacts, whereas spherical particles favor processability at high metal loading. Fine Ag particles further tune void filling and conductive‐network formation
O. Mhirsi   +3 more
wiley   +1 more source

The effect of preheating on the color stability of microhybrid composite resin after immersion in carbonated beverages and black tea: an experimental study

open access: yesPadjadjaran Journal of Dentistry
Introduction: Composite resin is commonly used in restorative dentistry due to its pleasing aesthetics. However, this material tends to experience discoloration, a vital standard reflecting the restoration’s success.
Raditya Nugroho   +4 more
doaj   +1 more source

Differences of methacrylate and silorane based composite resins surface hardness after 40% hydrogen peroxide application

open access: yesPadjadjaran Journal of Dentistry, 2013
Composite restoration is frequently found on teeth before doing any bleaching treatment. Hydrogen peroxide is a bleaching agent which enable transition to one of the composite physical properties. The aim of this research was to observe the difference of
Amalina Putri   +2 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

open access: yesAdvanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein   +4 more
wiley   +1 more source

Wear resistance of indirect composite resins used for provisional restorations supported by implants

open access: yes, 2019
PURPOSE. The aim of this study was to investigate simulated localized and generalized wear of indirect composite resins used for implant supported provisional restorations. MATERIALS AND METHODS. The study investigated ten indirect composite resins.
Latta, Mark   +7 more
core   +1 more source

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti   +16 more
wiley   +1 more source

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