Influence of atomic oxygen exposure on surface resistivity of silicon doped polyimide affecting spacecraft charging

Mundari, Noor Danish Ahrar; Srivastava, Amar; Toyoda, Kazuhiro; Cho, Mengu

doi:10.1016/j.vacuum.2014.01.030

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…AO (atomic oxygen) is the most abundant gaseous species in LEO which is formed due to photo-dissociation of molecular oxygen at low earth altitudes (Figure 1a). The recombination of dissociated oxygen atoms is unlikely due to the high energy environment and longer mean free paths [33]. Other species include high energy protons (H nuclei), nitrogen, oxygen molecules and argon.…”

Section: Leo Environmental Challenges and Materials Requirementsmentioning

confidence: 99%

“…Since polar regions are characterized by low-density high energy plasmas and other regions can contain low energy plasmas, spacecraft can accumulate a static electric charge that could interfere with the function of spacecraft electronic systems. To prevent this, surface properties of the material such as Nanomaterials 2023, 13, 1763 7 of 23 electrical resistivity, secondary electron emissivity and photoelectron emissivity should be properly selected [33].…”

Section: Leo Environmental Challenges and Materials Requirementsmentioning

confidence: 99%

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Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

et al. 2023

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Recent advancements in space technology and reduced launching cost led companies, defence and government organisations to turn their attention to low Earth orbit (LEO) and very low Earth orbit (VLEO) satellites, for they offer significant advantages over other types of spacecraft and present an attractive solution for observation, communication and other tasks. However, keeping satellites in LEO and VLEO presents a unique set of challenges, in addition to those typically associated with exposure to space environment such as damage from space debris, thermal fluctuations, radiation and thermal management in vacuum. The structural and functional elements of LEO and especially VLEO satellites are significantly affected by residual atmosphere and, in particular, atomic oxygen (AO). At VLEO, the remaining atmosphere is dense enough to create significant drag and quicky de-orbit satellites; thus, thrusters are needed to keep them on a stable orbit. Atomic oxygen-induced material erosion is another key challenge to overcome during the design phase of LEO and VLEO spacecraft. This review covered the corrosion interactions between the satellites and the low orbit environment, and how it can be minimised through the use of carbon-based nanomaterials and their composites. The review also discussed key mechanisms and challenges underpinning material design and fabrication, and it outlined the current research in this area.

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Section: Leo Environmental Challenges and Materials Requirementsmentioning

confidence: 99%

Section: Leo Environmental Challenges and Materials Requirementsmentioning

confidence: 99%

Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

et al. 2023

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“…Another promising method for protecting PI from the action of atomic oxygen in space is the introduction of silicon-containing structures [18][19][20][21]. Many works have been devoted to the study of increasing the stability of polymers, especially PI, by introducing polyhedral oligomeric silsesquioxanes (POSS-structures) into them, with the general formula [RSiO 1,5 ] n, where R is an organic radical, including those carrying a reactive group, and n = 6, 8, 10 … [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of PI/POSS nanocomposite films based on track nuclear membranes and assessment of their resistance to oxygen plasma flow

Черкашина

Павленко

Носков

et al. 2021

Polymer

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This work presents, for the first time, data on the possibility of synthesizing polyimide nanocomposite films based on track nuclear membranes and organosiloxane (polyhedral oligomeric silsesquioxanes) POSS structures. The synthesis of the nanocomposite films was carried out by filling the tracks of a polyimide membrane with POSS structures under hydrothermal conditions in a high-pressure reactor. The surface and mechanical characteristics of the developed nanocomposite films were studied, and the results of their resistance to the flow of oxygen plasma are presented. It was found that the introduction of POSS structures significantly increased the resistance of polyimide to the flow of oxygen plasma. The PI/POSS composite exhibited an insignificant change in weight, the weight loss reached 0.92 ± 0.05 mg/cm 2 in 24 h after the start of the experiment, which is almost two orders of magnitude lower than that of the polyimide film.

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“…However, the environment in LEO is far different from the earth's surface and the outer space, which is full of atomic oxygen (AO), ultraviolet (UV) radiation, impacts of cold and hot cycles, impacts of flying objects, and other features. Among these, damage caused by AO is the most serious and has attracted much attention [6][7][8][9]. For composite materials, their matrixes are usually thermosetting resins.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Interlaminar Fracture Toughness and AO Resistance of CFRPs by Using Phosphorus-Containing Polymer/PEC-K Bifunctional Film

Guo

2021

Aerospace

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A new attempt to use a bifunctional interleaf for developing a novel structure–function-integrated composite with simultaneously improved interlaminar fracture toughness and atomic oxygen resistance was studied. The toughening mechanism and the atomic oxygen erosion property of the delaminated surfaces of the composites were examined. The bifunctional interleaf was prepared by blending a phosphorus-containing polymer and a thermoplastic polymer. After being interleaved, the mode I and mode II fracture toughness increased by 8.2% and 23.7% compared to the control sample, respectively. The toughness gains are much smaller than that of the only thermoplastic film-toughened composite because of the relative brittleness of the blend film. The atomic oxygen erosion rates of the mode I and mode II delamination surfaces decreased by 45.3% and 31.3% compared with the control, respectively. The carbon fibers on the irradiation surfaces are protected by a layer of phosphine oxide to prevent further erosion, and they were much less eroded, particularly for the mode I surface. In comparison, the erosion rates of the mode I and mode II surfaces of the toughened-only composite significantly increased by 83.6% and 107.2%, respectively, and the carbon fibers are seriously eroded.

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Influence of atomic oxygen exposure on surface resistivity of silicon doped polyimide affecting spacecraft charging

Cited by 8 publications

References 11 publications

Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

Synthesis of PI/POSS nanocomposite films based on track nuclear membranes and assessment of their resistance to oxygen plasma flow

Enhancing the Interlaminar Fracture Toughness and AO Resistance of CFRPs by Using Phosphorus-Containing Polymer/PEC-K Bifunctional Film

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