Surface molecular degradation of selected high performance polymer composites under low earth orbit environmental conditions

Awaja, Firas; Moon, Jin Bum; Gilbert, Michael; Zhang, Shengnan; Kim, Chun-Gon; Pigram, Paul J.

doi:10.1016/j.polymdegradstab.2011.04.001

Cited by 44 publications

(23 citation statements)

References 25 publications

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“…To date, few studies have been conducted to examine the AO erosion of polymers using PCA. Awaja et al are notable exceptions, as their work examined the surface degradation of glass fibre-reinforced epoxy [20] and carbon-fibre reinforced epoxy nanocomposites [21] using a combination of X-ray photoelectron spectroscopy (XPS), time of flight secondary ion mass spectrometry (ToF-SIMS), and scanning electron microscopy. Their approach used PCA to differentiate the elemental data in terms of the concentrations of molecular species produced by the exposure conditions.…”

Section: Introductionmentioning

confidence: 99%

Atomic oxygen degradation mechanisms of epoxy composites for space applications

He¹,

Suliga²,

Brinkmeyer³

et al. 2019

Polymer Degradation and Stability

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The effects of atomic oxygen on three commercial composite materials, based on two space-qualified epoxy resins (tetraglycidyl-4,4 0-diaminodiphenylmethane (TGDDM) cured with a blend of 4,4 0-methylenebis(2,6-diethylaniline) and 4,4 0-methylenebis(2-isopropyl-6-methylaniline); and a blend of TGDDM, bisphenol A diglycidyl ether (DGEBA), and epoxidised novolak resin initiated by N'-(3,4-dichlorophenyl)-N,N-dimethylurea) are studied. Samples were exposed to a total fluence of (3.82 Â 10 20 atom/cm 2), equating to a period of 43 days in low Earth orbit. The flexural rigidity and modulus of all laminates displayed a reduction of 5e10% after the first exposure (equivalent to 20 days in orbit). Fourier transform infrared (FTIR) spectra, obtained during prolonged exposure to atomic oxygen, were interpreted using multivariate analysis to explore the degradation mechanisms.

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Section: Introductionmentioning

confidence: 99%

Atomic oxygen degradation mechanisms of epoxy composites for space applications

He¹,

Suliga²,

Brinkmeyer³

et al. 2019

Polymer Degradation and Stability

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“…High-performance polymeric materials, for example polyimides, are extensively used in constructing spacecraft elements, in the form of coatings or binders of composite materials [ 1 , 2 , 3 ]. In space, the incoming atomic oxygen (AO) flow causes the erosion and oxidation of polymeric material surfaces, which considerably limits the spacecraft life [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Composition of the Hybrid Filler on the Atomic Oxygen Erosion Resistance of Polyimide Nanocomposites

et al. 2020

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The structure and properties of nanocomposites based on organosoluble polyimide (PI) and branched functional metallosiloxane oligomers with different types of central metal atoms (Al, Cr, Fe, Zr, Hf and Nb) were investigated. Under the same weight content of the filler, the geometric parameters of the nanoparticles and thermal properties of the nanocomposites did not exhibit a direct relationship with the ability of the materials to withstand the incident flow of oxygen plasma. The atomic oxygenerosion resistance of the filled PI films was influenced by the composition of the hybrid fillerand the type of metal atom in the hybrid filler in the base metallosiloxane oligomer. To determine the effectiveness of the nanoparticles as protective elements of the polymer surface, the nanocomposite erosion yields pertaining to the concentration of the crosslinked organo–inorganic polymer forming the dispersed phase were determined and expressed in mmol per gram PI. The filler concentration in the polymer, expressed in these units, allows for comparison of the efficiency of different nanosize fillers for use in fabricating space survivable coatings. This can be important in the pursuit of new precursors, fillers for fabricating space survivable polymer composites.

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“…Aging studies are long‐term process, and often need decades to fully assess the long‐term performance of composites. Therefore, various approaches have been made to accelerate ageing, such as hygrothermal ageing , vacuum thermal cycling , thermal aging , proton irradiation , and electron irradiation . Thermal aging is considered to be the most effective and common method for simulating the real conditions.…”

Section: Introductionmentioning

confidence: 99%

Properties of novel bismaleimide resins and thermal ageing effects on the ILSS performance of their carbon fibre–bismaleimide composites

Liu

Chen

et al. 2018

Polymer Composites

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An oligomeric bismaleimide (BMI) containing both phthalide cardo and cyano group (PCBMI) was mixed with O,O'‐diallyl bisphenol A (DABPA). The thermal properties of PCBMI/DABPA in different proportions (1:0.87, 1:1, and 1:1.2) and their composites were characterized using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA). In addition, the mechanical properties of the prepared composites were also investigated. The results exhibited excellent thermal stability, heat resistance, and mechanical properties. We further investigated the effects of thermal ageing at 200°C and 250°C in air for up to 1000 h on inter laminar shear strength (ILSS) of the carbon fiber–bismaleimide composites (T700/DPC87). Scanning electron microscopy (SEM) and scanning acoustic microscope (SAM) were employed to characterize interfacial property changes, and Fourier transform infrared (FTIR) was employed to characterize chemical changes due to ageing. The results indicated PCBMI/DABPA resin had an excellent interface bonding capacity and aging resistance. It can, therefore, be widely used in aeronautics and space industries. POLYM. COMPOS., 40:E1283–E1293, 2019. © 2018 Society of Plastics Engineers

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Surface molecular degradation of selected high performance polymer composites under low earth orbit environmental conditions

Cited by 44 publications

References 25 publications

Atomic oxygen degradation mechanisms of epoxy composites for space applications

Atomic oxygen degradation mechanisms of epoxy composites for space applications

Influence of the Composition of the Hybrid Filler on the Atomic Oxygen Erosion Resistance of Polyimide Nanocomposites

Properties of novel bismaleimide resins and thermal ageing effects on the ILSS performance of their carbon fibre–bismaleimide composites

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