Results 31 to 40 of about 155,903 (385)

Monitoring the resin infusion manufacturing process under industrial environment using distributed sensors [PDF]

open access: yesJournal of Composite Materials 46, 6 (2012) 691-706, 2012
A novel direct approach to detect the resin flow front during the Liquid Resin Infusion process under industrial environment is proposed. To detect the resin front accurately and verify the results, which are deduced from indirect micro-thermocouples measurements, optical fiber sensors based on Fresnel reflection are utilized.
arxiv   +1 more source

Development of polymer network of phenolic and epoxies resins mixed with linseed oil: pilot study [PDF]

open access: yes, 2010
Epoxy resin was mixed with phenolic resins in different percentages by weight. Composite 40/60 means the proportion by weight of epoxy resin is 40 percent. It was found that only composites 50/50 and 40/60 could be cured in ambient conditions. Dynamic
Cardona, F.   +3 more
core   +1 more source

The effect of repeated preheating of dimethacrylate and silorane-based composite resins on marginal gap of class V restorations [PDF]

open access: yesJournal of Dental Research, Dental Clinics, Dental Prospects, 2017
Background. One of the problems with composite resin restorations is gap formation at resin‒tooth interface. The present study evaluated the effect of preheating cycles of silorane- and dimethacrylate-based composite resins on gap formation at the ...
Parnian Alizadeh Oskoee   +5 more
doaj   +1 more source

Effects of alkalisation and volume fraction reinforcement of Bombyx mori silk fibre on the flexural strength of dental composite resins

open access: yesDental Journal, 2020
Background: Composite resins are widely used in dentistry to restore dental caries. Recently, short fibre-reinforced composite (FRC) resins have been widely used for high-stress areas, especially in posterior teeth.
Dyah Anindya Widyasrini   +1 more
doaj   +1 more source

Compressive Strength of Bulk-Fill and Conventional Nano-hybrid Composite Resins: An in Vitro Study [PDF]

open access: yes, 2021
Objectives Evaluation of the properties of recently introduced bulk-fill composite resins from different aspects is important. We aimed to evaluate the compressive strength of two bulk-fill composite resins with different viscosities compared with one ...
Mofidi, Maryam   +3 more
core   +2 more sources

Composite Restorative Resins

open access: yesDental Materials Journal, 1986
Physical and mechanical properties of 18 commercial light-activated composite resins were measured and the correlation between their properties was discussed. Hardness of the material, which was polymerized in accordance with the manufacturer's recommendation, increased considerably after exposure to light and reached approximately constant values ...
Ryuichiro Fujita   +8 more
openaire   +3 more sources

Understanding the Origin of the Low Cure-Shrinkage of Polybenzoxazine Resin by Computational Simulation [PDF]

open access: yesarXiv, 2021
Thermoset resin-based composite materials are widely used in the aerospace industry, mainly due to their high stiffness-to-weight and strength-to-weight ratios. A major issue with the use of thermoset resins in fiber composites is the process-induced residual stresses that are formed from resin chemical shrinkage during the curing process.
arxiv  

COOEE bitumen. Chemical aging [PDF]

open access: yesJ.Chem. Phys. 139, 124506 (2013), 2013
We study chemical aging in "COOEE bitumen" using molecular dynamic simulations. This model bitumen is composed of four realistic molecule types: saturated hydrocarbon, resinous oil, resin, and asphaltene. The aging reaction is modelled by the chemical reaction: "2 resins $\rightarrow$ 1 asphaltene".
arxiv   +1 more source

Controlling mechanical properties of 3D printed polymer composites through photoinduced reversible addition-fragmentation chain transfer (RAFT) polymerization

open access: yes, 2022
Reversible addition-fragmentation chain-transfer (RAFT) polymerization has been widely exploited to produce homogeneous and living polymer networks for advanced material design.
Boyer, C   +3 more
core   +1 more source

Surface discoloration of composite resins: Effects of staining and bleaching

open access: yesDental Research Journal, 2012
Background: The purpose of this in vitro study was to evaluate surface discoloration of three microhybrid composite resins (Esthet·X HD, Clearfil AP-X, Gradia Direct) and five nanohybrid composite resins (Ceram·X, GC Kalore, G-aenial, Grandio, GrandioSO),
Claudio Poggio   +4 more
doaj   +1 more source

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