Articles with "polyimide films" as a keyword



A facile in‐situ fabrication of black polyimide films with ultrahigh electrical properties

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Published in 2024 at "Journal of Applied Polymer Science"

DOI: 10.1002/app.55267

Abstract: Considering the ongoing evolution of flexible printed circuit boards and the importance of safeguarding the intellectual property of circuit designs, there exists an imperative demand for the development of a black film exhibiting exceptional electrical… read more here.

Keywords: situ fabrication; polyimide films; electrical properties; facile situ ... See more keywords

Intrinsically Colored Polyimide Films Prepared by Embedding Chromophores on the Polymer Backbones

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Published in 2024 at "Macromolecular Chemistry and Physics"

DOI: 10.1002/macp.202300405

Abstract: A versatile strategy of preparing colored polyimide (PI) films was developed by embedding colored monomers on the backbones of colorless substrate polymers. Intrinsically colored PI films of four colors – red, yellow, blue and purple,… read more here.

Keywords: polyimide films; colored polyimide; films prepared; prepared embedding ... See more keywords

Development of polyimide films reinforced with boron nitride and boron nitride nanosheets for transparent flexible device applications

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Published in 2018 at "Nano Research"

DOI: 10.1007/s12274-017-1856-0

Abstract: The benefits of reinforcing polyimide (PI) films with boron nitride (BN) particles and boron nitride nanosheets (BNNSs) were assessed with the aim of enhancing their thermal, optical, and mechanical properties for flexible device applications. BNNSs… read more here.

Keywords: flexible device; boron nitride; device applications; polyimide films ... See more keywords

Correlation of stress and optical properties in highly transparent polyimides for future flexible display

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Published in 2017 at "Macromolecular Research"

DOI: 10.1007/s13233-017-5126-5

Abstract: High transmittance and low birefringence are desirable optical properties in polyimide films which are promising flexible substrates in next generation display devices. However, thermal processes for the fabrication of polyimide films can cause anisotropic changes… read more here.

Keywords: optical retardation; stress optical; changes optical; optical properties ... See more keywords
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Graphene induced carbonization of polyimide films to prepared flexible carbon films with improving-thermal conductivity

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Published in 2020 at "Ceramics International"

DOI: 10.1016/j.ceramint.2019.10.042

Abstract: Abstract Carbon films prepared by polyimide (PI) films treated under 1500°C exhibit favorable thermal conductivity. However, the bonds of carbon films will fracture and recombine which will cause shrinking and forming defects. The flexibility of… read more here.

Keywords: thermal conductivity; carbon films; polyimide films; films prepared ... See more keywords

Characteristics and electrical properties of polyimide films fluorinated for different durations

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Published in 2021 at "Materials today communications"

DOI: 10.1016/j.mtcomm.2021.102098

Abstract: Abstract Surface fluorination of polyimide films was conducted for different durations (30, 60, and 90 min) in a laboratory vessel using an F2/N2 gas mixture containing 12.5 % F2 by volume. The differences in the structural,… read more here.

Keywords: electrical properties; surface; surface conductivity; fluorination ... See more keywords

Preparation of polyimide films via microwave-assisted thermal imidization

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Published in 2019 at "RSC Advances"

DOI: 10.1039/c9ra00355j

Abstract: A series of polyimide films were prepared via a microwave-assisted thermal imidization and conventional thermal imidization method at different temperatures. read more here.

Keywords: microwave assisted; thermal imidization; assisted thermal; polyimide films ... See more keywords

Different Fluorine Content of Poly(aryleneetherketone) Coated on Polyimide Films to Fabricate Hydrophobic and Low Moisture Absorption Films

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Published in 2023 at "Journal of the Brazilian Chemical Society"

DOI: 10.21577/0103-5053.20230077

Abstract: Polyimides have attracted considerable attention owing to their excellent properties; however, their hydrophilicity makes them susceptible to hydrolytic degradation. In this study, polyaryletherketones (PAEKs) with different fluorine contents were coated onto the surface of the… read more here.

Keywords: fabricate hydrophobic; different fluorine; polyimide films; films fabricate ... See more keywords

Synthesis and Properties of Optically Transparent Fluoro-Containing Polyimide Films with Reduced Linear Coefficients of Thermal Expansion from Organo-Soluble Resins Derived from Aromatic Diamine with Benzanilide Units

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Published in 2022 at "Materials"

DOI: 10.3390/ma15186346

Abstract: Wholly aromatic polyimide (PI) films with good solution processability, light colors, good optical transparency, high storage modulus, and improved heat resistance were prepared and characterized. For this purpose, a multi-component copolymerization methodology was performed from… read more here.

Keywords: polyimide films; diamine; thermal expansion; fluoro containing ... See more keywords

Highly Thermal Conductive Graphite Films Derived from the Graphitization of Chemically Imidized Polyimide Films

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Published in 2022 at "Nanomaterials"

DOI: 10.3390/nano12030367

Abstract: With the large-scale application and high-speed operation of electronic equipment, the thermal diffusion problem presents an increasing requirement for effective heat dissipation materials. Herein, high thermal conductive graphite films were fabricated via the graphitization of… read more here.

Keywords: polyimide films; conductive graphite; films derived; thermal conductive ... See more keywords

High-Bonding-Strength Polyimide Films Achieved via Thermal Management and Surface Activation

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Published in 2023 at "Nanomaterials"

DOI: 10.3390/nano13091575

Abstract: In this study, thermal and argon (Ar) plasma/wetting treatments were combined to enhance the bonding strength of polyimide (PI) films. Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) was used to analyze the changes in the… read more here.

Keywords: strength; polyimide films; bonding strength; spectroscopy ... See more keywords