Results 51 to 60 of about 78,838 (289)

Increasing the adhesion laminated films based on polyimide to the surface [PDF]

BIO Web of Conferences
Polyimide film is widely used in various fields of industry, ranging from space technology to microelectronics. The widespread use of the film is due to its high thermal stability, low dielectric constant and good mechanical strength.
Pavlov Vladimir
doaj   +1 more source

Temperature dependent characterization of optical fibres for distributed temperature sensing in hot geothermal wells

, 2012
This study was performed in order to select a proper fibre for the application of a distributed temperature sensing system within a hot geothermal well in Iceland. Commercially available high temperature graded index fibres have been tested under in-situ
Albertsson A, Carter E C, Cella J A, DuPont, Ikeda N, Jan Henninges, Kaura J Sierra J, Lee C, Lemaire P J, Norman R Weiss J Krumhansl J, Smithpeter C Norman R Krumhansl J Benoit D Thompson S, Thomas Reinsch   +11 more
core   +1 more source

All‐Aqueous Pullulan Fibers Enabling Visible‐to‐Near‐Infrared Waveguiding with Mechanical and Thermal Resilience

Advanced Functional Materials, EarlyView.
Pullulan, a biomass‐derived polysaccharide, is transformed into transparent optical fibers using a solvent‐free borax hydrogel‐spinning method. The fibers outperform PMMA with ≈200 MPa tensile strength and 200 °C stability, while uniquely guiding visible‐to‐NIR light and enabling additive‐free humidity sensing.
Yuya Fukata, Aayush Kumar Jaiswal, Ari Hokkanen, Hannes Orelma, Tadahisa Iwata   +4 more
wiley   +1 more source

Design and application of polyimide composites in aircraft exhaust nozzle

Journal of Aeronautical Materials
Polyimide composites are extensively utilized in aircraft and engine structural design due to their superior high-temperature resistance properties. An aircraft polyimide composite exhaust nozzle structure is designed and fabricated based on the material
ZHAO Jianhua, ZHU Shengli, GAO Yuwei, YANG Ming   +3 more
doaj   +1 more source

Synthesis of high molecular weight polyimide consisting hexafluoroisopropylidene moiety for gas separation

Journal of Mechanical Engineering and Sciences, 2017
In this work, high molecular weight of heterocyclic aromatic polyimide consisting hexafluoroisopropylidene moiety in both diamine and dianhydride fragments was synthesised.
N.A. Mokri, P.C. Oh, H. Mukhtar, T.L. Chew   +3 more
doaj   +1 more source

Preparation and characterization of matrix-graded polyimide composite along thickness direction

Journal of Aeronautical Materials, 2022
A resin-transfer-molding (RTM) polyimide resin, RTM-PI, was developed, and the matrix-graded polyimide composite along thickness directions was fabricated with RTM processing.
NI Hongjiang, LI Jun, XING Yu, ZHANG Daijun, CHEN Xiangbao   +4 more
doaj   +1 more source

SYNTHESIS AND CHARACTERIZATION OF POLYIMIDEZEOLITE MIXED MATRIX MEMBRANE FOR BIOGAS PURIFICATION [PDF]

, 2009
Biogas has become an attractive alternative energy source due to the limitation of energy from fossil. In this study, a new type of mixed matrix membrane (MMM) consisting of polyimide-zeolite was synthesized and characterized for biogas purification ...
Budiyono, Budiyono, I.N. , Widiasa, Seno, Johari, Sunarso, Sunarso, Tutuk Joko, Kusworo   +4 more
core  

Polarization-maintaining reflection-mode THz time-domain spectroscopy of a polyimide based ultra-thin narrow-band metamaterial absorber [PDF]

, 2018
This paper reports the design, the microfabrication and the experimental characterization of an ultra-thin narrow-band metamaterial absorber at terahertz frequencies.
Astorino, Maria Denise, Fastampa, Renato, Frezza, Fabrizio, Maiolo, Luca, Marrani, Marco, Missori, Mauro, Muzi, Marco, Tedeschi, Nicola, Veroli, Andrea   +8 more
core   +2 more sources

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

Novel Polymer Composites on the Basis of Arylalicyclic Polyimide Blends. I. Polyimide/Polycarbonate & Polyimide/Polysulphone Blends

Eurasian Chemico-Technological Journal, 2004
The new composite materials based on dianhydride of tricyclodecentetracarbon acid and oxydianiline with two other thermally stable polymers, such as polycarbonate and polysulphone, are being reported.
Saule Kudaikulova, Zulfiya Musapirova, Natalya Sobarina, Maira Umerzakova, Rinat Iskakov, Bulat Zhubanov, Mare J.M. Abadie   +6 more
doaj   +1 more source