Results 21 to 30 of about 43,041 (304)
Chapter 6: High-performance polyimide fibers
Advanced Industrial and Engineering Polymer Research, 2022 The highly conjugated chemical structure of polyimide fibers has endowed polyimide with outstanding mechanical properties, high thermal stability, good solvent resistance, and excellent light stability, resulting in a wide application prospect in ...
Qinghua Zhang +3 more
doaj +1 more source
Preparation and visible-light photocatalytic activity of PMDA/PDA linear polyimide
Journal of Hebei University of Science and Technology, 2019 The photocatalytic oxidation ability of polyimide is weak because of the relatively low valence band (VB). The valence band potential of the PMDA/PDA linear polyimide is +2.45 eV, showing that it has strong oxidizing property and strong oxidative ...
Qi ZHANG +4 more
doaj +1 more source
Principles and Application of Polyimide Fiber Bragg Gratings for Surface Strain Measurement
Applied Sciences, 2017 Although theoretical investigation has demonstrated that fewer strain transfer layers imply a greater strain transfer ratio, as well as increased accuracy, most researchers are still focused on investigating encapsulated Fiber Bragg gratings (FBGs) in ...
Yangyang Sun +7 more
doaj +1 more source
Anti-high speed impact properties of polyimide fiber/bismaleimide resin composites
Cailiao gongcheng, 2021 The polyimide fiber/ bismaleimide resin composites were prepared by the autoclave molding process. Effects of volume fraction of polyimide fiber and ambient temperature on the high speed impact properties were investigated using the air cannon impact ...
GU Shan-qun +6 more
doaj +1 more source
Nanofracture mechanics : scanning force microscopy for the investigation of adhesion and corrosion at solid-solid interfaces [PDF]
, 2013 Fracture processes are crucially determined by structural features on the molecular/nanometer scale (cavities, occlusions, cracks, etc.) as well as on the atomic scale (e.g. interstitial, substitutional and vacancy defects).
Kaufmann, André Nicolas
core +1 more source
Effects of strain-rate and temperature on mechanical behavior of polyimide foam in compression
Mechanical 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
Introducing planar hydrophobic groups into an alkyl-sulfonated rigid polyimide and how this affects morphology and proton conductivity [PDF]
, 2019 Effects on organized structure and proton conductivity by the introduction of hydrophobic groups into the sulfonated polyimide backbone were investigated. A new sulfonated random co-polyimide with ion exchange capacity (IEC) of 2.69 meq.
Tanaka, Teppei +7 more
core +1 more source
Journal 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
eXPRESS 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
Journal 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