Polyimide Used in Space Applications

Griseri, V.

doi:10.5772/intechopen.93254

Cited by 6 publications

(3 citation statements)

References 54 publications

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“…Polyimides are typical heat-resistant polymers with a wide application in organic electronics such as flexible sensing, chip packaging and electronic skin. 62…”

Section: Resultsmentioning

confidence: 99%

High-throughput screening of amorphous polymers with high intrinsic thermal conductivity via automated physical feature engineering

Huang,

Ma,

et al. 2023

J. Mater. Chem. A

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“…Polyimides are typical heat-resistant polymers with a wide application in organic electronics such as flexible sensing, chip packaging and electronic skin. 62…”

Section: Resultsmentioning

confidence: 99%

High-throughput screening of amorphous polymers with high intrinsic thermal conductivity via automated physical feature engineering

Huang,

Ma,

et al. 2023

J. Mater. Chem. A

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“…They exhibit intrinsic very good mechanical, thermal, chemical and electrical insulating properties [16]. In detail, regarding the electrical properties, PIs possess an Ohmic resistivity in the order of 10 17 Ω m [17] and an electrical breakdown strength higher than 109 V/m [18].…”

Section: )mentioning

confidence: 99%

Design of Innovative High-Performance Polymer for Passive Lunar Dust Mitigation

Saccone

Favaloro

Rosa

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Dust in space environments is now recognized as a major concern for successful manned and robotic exploration and colonization missions. Indeed, a thin layer of dust covers the lunar surface made of loose granular material, consisting of a broad range of shapes, sizes, and types of sediments, which mainly consists of silicate minerals in the form of micrometric, sharp, abrasive, porous, chemically reactive dust particles. The aim of this paper is to present preliminary results related to the design and development of an innovative, lightweight, high-performance polymer with an elevated strength-to-weight ratio able to mitigate particle contamination. In detail, dust mitigation or the minimization of the surface energy and consequently the adhesion forces among the external layers and the granular dust micrometric particles can be achieved through modifications of the surface properties by means of both chemical and physical methodologies. The proposed approach, to realize an innovative material and not a hydrophobic coating, is potentially applicable to a wide range of technological conditions and it relies on reproducible and controllable chemical modifications of the material’s surface properties through the design and synthesis of suitable base materials i.e., aromatic polyimides and copolyimides and incorporation of special low molecular weight additives, i.e., surface migrating agents, loaded directly within the reacting mixture during the intermediate phases of the copolymerization. The materials investigated in this work exhibit mechanical properties able to withstand the extreme space environment conditions and an elevated non-sticking behaviour of its surface layers in contact with granular, micrometric dust particles of lunar regolith i.e., abhesion capacity.

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“…In this work, we provide the first study of a non-fullerene acceptor ( o -IDTBR) in combination with a donor polymer fabricated onto polyamide (Kapton) as a mechanically flexible substrate that is known to exhibit high transmission to X-rays and negligible radiation-induced fluorescence through its previous characterization for space applications . We focus on assessing organic materials for X-ray detection at spectral wavelengths and light intensities relevant to indirect X-ray detection, highlighting that performance features that would typically be considered sub-optimal for photodiodes in applications such as solar cells and phototransistors may prove highly functional for ionizing radiation detection.…”

Section: Introductionmentioning

confidence: 99%

Flexible Polymer X-ray Detectors with Non-fullerene Acceptors for Enhanced Stability: Toward Printable Tissue Equivalent Devices for Medical Applications

Large

Posar

Mozer

et al. 2021

ACS Appl. Mater. Interfaces

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There is growing interest in the development of novel materials and devices capable of ionizing radiation detection for medical applications. Organic semiconductors are promising candidates to meet the demands of modern detectors, such as low manufacturing costs, mechanical flexibility, and a response to radiation equivalent to human tissue. However, organic semiconductors have typically been employed in applications that convert low energy photons into high current densities, for example, solar cells and LEDs, and thus existing design rules must be re-explored for ionizing radiation detection where high energy photons are converted into typically much lower current densities. In this work, we report the optoelectronic and X-ray dosimetric response of a tissue equivalent organic photodetector fabricated with solution-based inks prepared from polymer donor poly(3-hexylthiophene) (P3HT) blended with either a non-fullerene acceptor (5Z,5′Z)-5,5′-((7,7′-(4,4,9,9-tetraoctyl-4,9-dihydro-s-indaceno[1,2-b:5,6-b′]dithiophene-2,7-diyl)bis(benzo[c][1,2,5]thiadiazole-7,4-diyl))bis(methanylylidene))bis(3-ethyl-2-thioxothiazolidin-4-one) (o-IDTBR) or a fullerene acceptor, [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). Indirect detection of X-rays was achieved via coupling of organic photodiodes with a plastic scintillator. Both detectors displayed an excellent response linearity with dose, with sensitivities to 6 MV photons of 263.4 ± 0.6 and 114.2 ± 0.7 pC/cGy recorded for P3HT:PCBM and P3HT:o-IDTBR detectors, respectively. Both detectors also exhibited a fast temporal response, able to resolve individual 3.6 μs pulses from the linear accelerator. Energy dependence measurements highlighted that the photodetectors were highly tissue equivalent, though an under-response in devices compared to water by up to a factor of 2.3 was found for photon energies of 30–200 keV due to the response of the plastic scintillator. The P3HT:o-IDTBR device exhibited a higher stability to radiation, showing just an 18.4% reduction in performance when exposed to radiation doses of up to 10 kGy. The reported devices provide a successful demonstration of stable, printable, flexible, and tissue-equivalent radiation detectors with energy dependence similar to other scintillator-based detectors used in radiotherapy.

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Polyimide Used in Space Applications

Cited by 6 publications

References 54 publications

High-throughput screening of amorphous polymers with high intrinsic thermal conductivity via automated physical feature engineering

High-throughput screening of amorphous polymers with high intrinsic thermal conductivity via automated physical feature engineering

Design of Innovative High-Performance Polymer for Passive Lunar Dust Mitigation

Flexible Polymer X-ray Detectors with Non-fullerene Acceptors for Enhanced Stability: Toward Printable Tissue Equivalent Devices for Medical Applications

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