Results 21 to 30 of about 78,838 (289)

Effects of strain-rate and temperature on mechanical behavior of polyimide foam in compression

open access: yesMechanical Engineering Journal, 2016
Polymeric materials are now major materials used in various situations. However, most polymers are usually unsuitable for use in high temperature environments because of low glass transition temperature. In polymers, however, polyimide is one of polymers
Akifumi YOSHIMOTO   +3 more
doaj   +1 more source

Surface morphology of polyimide thin film dip-coated on polyester filament for dielectric layer in fibrous organic field effect transistor [PDF]

open access: yes, 2014
The idea of wearable electronics automatically leads to the concept of integrating electronic functions on textile substrates. Since this substrate type implies certain challenges in comparison with their rigid electronic companions, it is of utmost ...
Bruneel, Els   +3 more
core   +1 more source

Enhancing thermo-oxidative stability of thermoset polyimide composites using nano neodymium oxide particles

open access: yesJournal of Materials Research and Technology, 2021
Thermoset polyimide was modified with nano neodymium oxide to improve its thermo-oxidative stability. The modified polyimide prepreg was prepared by a hot-melt process, and its composite laminates were successfully fabricated by hot-press molding ...
Peng Zhang   +4 more
doaj   +1 more source

Construction of novel Cu-α-diimide interactions for enhancing thermal resistance and dimensional stability of polyimide films

open access: yesJournal of Materials Research and Technology, 2023
The new-generation polyimide films with simultaneously outstanding thermal stability and low coefficient of linear thermal expansion (CTE) are urgently needed.
Senjie Jiang   +9 more
doaj   +1 more source

High yield fabrication process for 3D-stacked ultra-thin chip packages using photo-definable polyimide and symmetry in packages [PDF]

open access: yes, 2014
Getting output of multiple chips within the volume of a single chip is the driving force behind development of this novel 3D integration technology, which has a broad range of industrial and medical electronic applications. This goal is achieved in a two-
Cauwe, Maarten   +4 more
core   +3 more sources

Electrical conduction of polyimide films prepared from polyamic acid (PAA) and pre-imidized polyimide (PI) solution

open access: yeseXPRESS Polymer Letters, 2007
Electrical conduction characteristics in two different polyimide films prepared by the imidization of polyamic acid (PAA) and pre-imidized polyimide (PI) solution were investigated.
doaj   +1 more source

Novel thin film polymer foaming technique for low and ultra low-k dielectrics [PDF]

open access: yes, 2001
The results presented show a novel route for the preparation of thin ultra-low-k polymer films based on commercial and "non-exotic" (non-expensive) polyimide by a foaming technique.
Koops, G.H.   +5 more
core   +3 more sources

Polyimide mesh-based sample holder with irregular crystal mounting holes for fixed-target serial crystallography

open access: yesScientific Reports, 2021
The serial crystallography (SX) technique enables the determination of the room-temperature structure of a macromolecule while causing minimal radiation damage, as well as the visualization of the molecular dynamics by time-resolved studies.
Ki Hyun Nam, Jihan Kim, Yunje Cho
doaj   +1 more source

Sustainable Dielectric Films with Ultralow Permittivity from Soluble Fluorinated Polyimide

open access: yesMolecules, 2023
In the rapidly growing area of high-frequency communications, polyimide films with ultralow dielectric constant and dielectric loss, adequate insulating strength, and recyclability are in high demand.
Hejian Li   +6 more
doaj   +1 more source

Synthesis and Characterization of New Polyimide Contain Heterocyclic

open access: yesمجلة بغداد للعلوم, 2013
Novel heterocyclic polyimide 5(a,b) have been synthesized based on polyacrylic backbone. The synthetic route start with nucleophilic substitution of 2-amino, or 4-amino, pyridine 1(a,b) to the polyacryloyl chloride afforded poly substituted amide 2(a,b).
Baghdad Science Journal
doaj   +1 more source

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