The effect of thermo-oxidative aging on carbon fiber reinforced cyanate ester composites

2014 ◽  
Vol 49 (26) ◽  
pp. 3241-3250 ◽  
Author(s):  
Eleni Fiamegkou ◽  
Evgenia Kollia ◽  
Antonios Vavouliotis ◽  
Vassilis Kostopoulos
Keyword(s):  
Carbon Fiber ◽  
Cyanate Ester ◽  
Fiber Reinforced ◽  
Oxidative Aging ◽  
Carbon Fiber Reinforced

Effect of Thermal-Oxidative Aging on the Mechanical Properties of Carbon Fiber Reinforced Bis-Maleimide Composites

2010 ◽  
Vol 152-153 ◽  
pp. 829-833 ◽  
Author(s):  
Xin Ying Lv ◽  
Rong Guo Wang ◽  
Wen Bo Liu ◽  
Long Jiang
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Flexural Strength ◽  
Aging Time ◽  
Testing Temperature ◽  
Fiber Reinforced ◽  
Oxidative Aging ◽  
Fiber Reinforced Polymer Composites ◽  
Carbon Fiber Reinforced ◽  
Thermal Oxidative Aging

Bis-maleimide (BMI) resins are widely applied in carbon fiber reinforced polymer composites in aerospace fields, for their excellent thermal and mechanical properties. The effects of thermo-oxidative aging on mechanical properties of carbon fiber reinforced BMI composites were investigated by SEM with the combination of flexural strength test and inter-laminar shear strength (ILSS) test. The results indicated that the thermal-oxidative aging had some effects on mechanical properties of carbon fiber/BMI composites; however the testing temperature or service temperature had much more effects than aging time. With aging time increased, the flexural strength at 150 oC and the ILSS at 25 oC slightly increased, while the ILSS at 150 oC decreased gradually. Both test results of mechanical properties and fracture models of damaged flexural specimens by SEM indicated that the matrix resin in the composites showed some viscoelastic behaviors that resulted in the remarkable dependence of mechanical properties of the composites on temperature. Therefore, the carbon fiber reinforced BMI composites had lower flexural strength and ILSS at 150 oC than that at 25 oC.

Thermal Ageing of Carbon Fiber‐Reinforced Cyanate Ester Composites Under Inert and Oxidative Environment

2018 ◽  
Vol 40 (S2) ◽  
pp. E1388-E1396
Author(s):  
Evgenia Kollia ◽  
Antonios Vavouliotis ◽  
Vassilios Kostopoulos
Keyword(s):  
Carbon Fiber ◽  
Thermal Ageing ◽  
Cyanate Ester ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Effects of hyperthermal atomic oxygen on a cyanate ester and its carbon fiber-reinforced composite

2018 ◽  
Vol 31 (4) ◽  
pp. 472-482 ◽  
Author(s):  
Heilong Wang ◽  
Min Qian ◽  
Vanessa J Murray ◽  
Bohan Wu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Surface Topography ◽  
Photoelectron Spectroscopy ◽  
Atomic Oxygen ◽  
Sample Surface ◽  
Low Earth Orbit ◽  
Cyanate Ester ◽  
Fiber Reinforced ◽  
Reaction Products ◽  
Carbon Fiber Reinforced

The durability of cyanate ester (CE) to hyperthermal atomic oxygen (AO) attack in low Earth orbit may be enhanced by the addition of carbon fiber to form a carbon fiber-reinforced cyanate ester composite (CFCE). To investigate the durability of CFCE relative to CE, samples were exposed to a pulsed hyperthermal AO beam in two distinct types of experiments. In one type of experiment, samples were exposed to the beam, with pre- and post-characterization of mass (microbalance), surface topography (scanning electron microscopy (SEM)), and surface chemistry (X-ray photoelectron spectroscopy (XPS)). In the second type of experiment, the beam was directed at a sample surface, and volatile products that scattered from the surface were detected in situ with the use of a rotatable mass spectrometer detector. CFCE exhibited less mass loss than pure CE with a given AO fluence, confirming that the incorporation of carbon fiber adds AO resistance to CE. Erosion yields of CE and CFCE were 2.63 ± 0.16 × 10−24 and 1.46 ± 0.08 × 10−24 cm3 O-atom−1, respectively. The reduced reactivity of CFCE in comparison to CE was manifested in less oxidation of the CFCE surface in XPS measurements and reduced CO, CO2, and OH reaction products in beam-surface scattering experiments. The surface topographical images collected by SEM implied different surface deterioration processes for CE and CFCE. A change of surface topography with increasing AO fluence for CE indicated a threshold AO fluence, above which the erosion mechanism changed qualitatively. CFCE showed almost intact carbon fibers after relatively low AO fluences, and while the fibers eventually eroded, they did not erode as rapidly as the CE component of the composite.

Carbon Fiber-Reinforced Cyanate Ester/Nano-ZrW2O8 Composites with Tailored Thermal Expansion

2011 ◽  
Vol 4 (2) ◽  
pp. 510-517 ◽  
Author(s):  
Prashanth Badrinarayanan ◽  
Mark K. Rogalski ◽  
Michael R. Kessler
Keyword(s):  
Thermal Expansion ◽  
Carbon Fiber ◽  
Cyanate Ester ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Random process model of mechanical property degradation in carbon fiber-reinforced plastics under thermo-oxidative aging

2016 ◽  
Vol 51 (9) ◽  
pp. 1253-1264
Author(s):  
Wei Fan ◽  
Jia-lu Li ◽  
Shun-hou Fan ◽  
Xu Liu ◽  
Run-jun Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Random Process ◽  
Process Model ◽  
Fiber Reinforced ◽  
Oxidative Aging ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

The mechanical properties of carbon fiber-reinforced plastics used in aerospace are vulnerable to degradation under thermo-oxidative aging conditions. However, it is hard to establish a mechanical property prediction model for carbon fiber-reinforced plastics from thermo-oxidative aging mechanism point of view since the thermo-oxidative aging degradation processes are very complex. A mathematical model was proposed based on the theory of stochastic processes for predicting mechanical property degradation of carbon fiber-reinforced plastics under thermo-oxidative aging conditions in the present work. However, the predicted values calculated by the “random process model” were not in good agreement with experimental data. And then a “modified random process model” (namely a wider random process model) was established through Box–Cox transformation for random process model. The verification of the evaluation model showed that the modified random process model can nicely describe the mechanical performance degradation of carbon fiber-reinforced plastics with the increasing of aging time under certain aging temperatures. As the modified random process model was established without limiting the reinforced structure of carbon fiber-reinforced plastics, the described method provides an opportunity to rapidly predict the mechanical properties and the lifetime of any carbon fiber-reinforced plastics by testing the mechanical properties of carbon fiber-reinforced plastics before and after aging for a short period of time.

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