Results 111 to 120 of about 155,903 (385)

Polyimide composites: Application histories [PDF]

, 1985
Advanced composite hardware exposed to thermal environments above 127 C (260 F) must be fabricated from materials having resin matrices whose thermal/moisture resistance is superior to that of conventional epoxy-matrix systems.
Poveromo, L. M.
core   +1 more source

Electrically Insulating Electromagnetic Interference Shielding Materials: A Perspective

Advanced Functional Materials, EarlyView.
Developing electromagnetic interference (EMI) shielding materials with inherent electrical insulation and high EMI shielding effectiveness is challenging but important for electronic applications. This perspective summarizes the recent advancements in designing electrically insulating EMI shielding materials and discusses the underlying mechanisms of ...
Ji Liu, Valeria Nicolosi
wiley   +1 more source

Efficient and Scalable Radiative Cooling for Photovoltaics Using Solution‐Processable and Solar‐Transparent Mesoporous Nanoparticles

Advanced Functional Materials, EarlyView.
Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung, Sung Yoon Min, Byungsoo Kang, Yongseok Yoo, Jihun Jang, Yeoun‐Woo Jang, Hyojeong Choi, Hyeong Won Lee, Swarup Biswas, Yongju Lee, Mansoo Choi, Phillip Lee, Min Seok Jang, Hyeok Kim, Shu Yang   +14 more
wiley   +1 more source

MICROHARDNESS EVALUATION OF THREE DIRECT COMPOSITE RESINS

Romanian Journal of Medical and Dental Education, 2019
This survey aimed at testing microhardness and determining its variation in case of some physiognomic coronary restoration materials frequently used in the dental practice. Material and method. The experimental researches related to the determination of
Elena-Raluca Baciu, Irina Grădinaru, Maria Bolat, Roxana-Ionela Vasluianu, Dana-Gabriela Bosînceanu, Norina-Consuela Forna   +5 more
doaj  

Inhibitory effect on Streptococcus mutans and mechanical properties of the chitosan containing composite resin

Restorative Dentistry & Endodontics, 2013
Objectives This study evaluated the antibacterial effect and mechanical properties of composite resins (LCR, MCR, HCR) incorporating chitosan with three different molecular weights (L, Low; M, Medium; H, High). Materials and Methods Streptococcus (S)
Ji-Sun Kim, Dong-Hoon Shin
doaj   +1 more source

Advanced Mycelium Skins for Sustainable Electronics

Advanced Functional Materials, EarlyView.
Mycelium skins are sustainable substrates for high‐performance electronic devices, enabling a green future. Environmentally friendly post‐growth treatments extend their durability and significantly improve their mechanical and electrical properties while maintaining their thermal stability and biodegradability.
Roland Pruckner, Laura Holzinger, David Preninger, Magdalena Breitwieser, Lukas Lehner, Christoph Putz, Stepan Demchyshyn, Simon Berrer, Astrid Hirz, Robert Koeppe, Sabine Hild, Martin Kaltenbrunner   +11 more
wiley   +1 more source

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

Journal 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, Kosmas Tolidis, Paris Gerasimou, Eugenia Koliniotou-Koumpia   +3 more
doaj   +1 more source

Direct Ink Writing of Conductive Hydrogels

Advanced Functional Materials, EarlyView.
This review examines the use of direct ink writing (DIW) for fabricating conductive hydrogels with customizable 3D structures. It outlines the rheological requirements for successful DIW, followed by an exploration of the materials and ink formulations used to impart electronic and/or ionic conductivity to hydrogels while maintaining printability ...
Monica Ho, Aline Braz Ramirez, Negar Akbarnia, Eric Croiset, Elisabeth Prince, Gerald G. Fuller, Milad Kamkar   +6 more
wiley   +1 more source

Dynamic Micromechanical Characterization of 3D Printed Bone In Vitro Models Manufactured via Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This study presents a novel approach to designing and fabricating high‐porosity 3D‐printed scaffolds using a customized resin. Scaffold geometry, cellular interactions, and mechanical properties are analyzed to demonstrate these engineered bone models.
Sera Choi, Elizabeth Hunt, Edward A. Shangin, Zahra Bahranifard, Emma Nguyen, Caitlyn J. Collins, Abby R. Whittington   +6 more
wiley   +1 more source

Correlations of norbornenyl crosslinked polyimide resin structures with resin thermo-oxidative stability, resin glass transition temperature and composite initial mechanical properties [PDF]

PMR (polymerization of monomeric reactants) methodology was used to prepare 70 different polyimide oligomeric resins and 30 different unidirectional graphite fiber/polyimide composites.
Alston, William B.
core   +1 more source