Influence of manufacturing techniques R-BAPB polyimide films on charge relaxation

2020 ◽  
Author(s):  
Almaz Kamalov ◽  
Margarita Borisova ◽  
Andrey Didenko ◽  
Gleb Vaganov ◽  
Vladimir Yudin
Keyword(s):  
Polyimide Films ◽  
Charge Relaxation ◽  
Manufacturing Techniques

Electron microscopy and diffraction studies of polyimides

1983 ◽  
Vol 41 ◽  
pp. 28-29
Author(s):  
O.C. de Hodgins ◽  
K. R. Lawless ◽  
R. Anderson
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Structural Features ◽  
Inert Atmosphere ◽  
Polyimide Films ◽  
Resolution Electron ◽  
The Matrix ◽  
High Resolution Electron Microscope ◽  
Diffraction Patterns ◽  
Polymeric Samples

Commercial polyimide films have shown to be homogeneous on a scale of 5 to 200 nm. The observation of Skybond (SKB) 705 and PI5878 was carried out by using a Philips 400, 120 KeV STEM. The objective was to elucidate the structural features of the polymeric samples. The specimens were spun and cured at stepped temperatures in an inert atmosphere and cooled slowly for eight hours. TEM micrographs showed heterogeneities (or nodular structures) generally on a scale of 100 nm for PI5878 and approximately 40 nm for SKB 705, present in large volume fractions of both specimens. See Figures 1 and 2. It is possible that the nodulus observed may be associated with surface effects and the structure of the polymers be regarded as random amorphous arrays. Diffraction patterns of the matrix and the nodular areas showed different amorphous ring patterns in both materials. The specimens were viewed in both bright and dark fields using a high resolution electron microscope which provided magnifications of 100,000X or more on the photographic plates if desired.

A Comparative Study of Offsite Construction Manufacturing Techniques

2020 ◽  
Author(s):  
Chelsea Ritter ◽  
Beda Barkokebas ◽  
Youyi Zhang ◽  
Mohamed Al-Hussein
Keyword(s):  
Comparative Study ◽  
Manufacturing Techniques

Polar Anchoring Properties of Photoalignment Polyimide Films

2019 ◽  
pp. 324
Author(s):  
Wei-Wei Chen ◽  
Jui-Wen Pan ◽  
Shie-Chang Jeng
Keyword(s):  
Polyimide Films

Influence of Nanosized Cerium Oxide on the Thermal Characteristics of Aromatic Polyimide Films

2020 ◽  
Vol 62 (2) ◽  
pp. 196-204
Author(s):  
I. V. Gofman ◽  
A. L. Nikolaeva ◽  
I. V. Abalov ◽  
E. M. Ivan’kova ◽  
I. V. Kuntzman ◽  
...  
Keyword(s):  
Cerium Oxide ◽  
Thermal Characteristics ◽  
Polyimide Films ◽  
Aromatic Polyimide
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