High heat resistant carbon fiber/polyimide composites with neutron shielding performance

Wu, Yuane; Gong, Chen; Zhan, Mei; Yang, Jiping

doi:10.1016/j.porgcoat.2019.03.047

Cited by 22 publications

(13 citation statements)

References 32 publications

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“…9(a) and (b), respectively, where R s is the solution resistance, the total polarization resistance R p (R p ¼ R s + R c + R ct ) represents the corrosion resistance of the coating to corrosive media, 55,56 R c is the coating resistance, R ct is charge transfer resistance, and CPE is the constant phase element; C coat and C dl are the capacitance response and charge transfer capacitance response of the double layer coating on the electrolyte/substrate interface, respectively. 57,58 Due to the unevenness and roughness of the coating surface, CPE is oen introduced instead of capacitor C, and its impedance is expressed by the following formula: 59…”

Section: Eis Analysismentioning

confidence: 99%

Synthesis of MOFs/GO composite for corrosion resistance application on carbon steel

et al. 2020

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Section: Eis Analysismentioning

confidence: 99%

Synthesis of MOFs/GO composite for corrosion resistance application on carbon steel

et al. 2020

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“…For this reason, hybrid polymeric-based materials were found to be a promising alternative to substitute heavy materials thanks to their improved nuclear shielding performances and relatively lower density. [12][13][14] Neutrons are neutral particles with an atomic mass slightly greater than the mass of the proton. These particles can penetrate through matter and interact with its atoms.…”

Section: Introductionmentioning

confidence: 99%

Benzoxazine resin as an interesting building block for advanced neutrons shields

Mehelli

Derradji

Habes

et al. 2021

High Performance Polymers

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The design of lightweight neutrons shields has been restricted for quite some time to the use of the epoxy thermosets as the main building blocks. Meanwhile, the recent developments in the field of polymers suggest otherwise. Indeed, benzoxazine resins have taken the lead over the traditional thermosets in many exigent applications. Therefore, in a vision to introduce newer matrices with better performances and to further expand the applications of the benzoxazine resins into the nuclear field, the neutron shielding efficiency along with the thermal and thermomechanical performances of the neat benzoxazine polymer and its subsequent B4C-reinforced composites were investigated. The neutron shielding measurements were performed using an optimized experimental setup at NUR research reactor, Algiers. The neat benzoxazine polymer displayed almost similar thermal neutrons screening performances than the epoxy with a macroscopic cross-section (Σ) of a 0.724 cm− 1 equivalent to a mean free path (λ) of 0.957 cm. The effect of the particle amount was also studied to maximize the shielding ability of the developed materials. For instance, the benzoxazine composite containing 20 wt.% of B4C displayed the outstanding screening ratio of about 96% for a sample thickness of 13 mm. Finally, the remarkable findings were put into context by providing multifaceted comparisons with the available shielding materials.

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“…17 –19 For example, carborane-containing polyimides exhibited the outstanding thermal stability and T g above 500°C we have done. 20,21 However, incorporation of carborane clusters into the BMI skeletons has not been reported in previous literatures yet. More importantly, they are expected to improve the thermal and thermo-oxidative stability without changing their good processability.…”

Section: Introductionmentioning

confidence: 99%

Carborane-containing bismaleimide resins with excellent heat resistance and dimensional stability

Wu¹,

Gong

Gao³

et al. 2020

High Performance Polymers

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Novel carborane-containing bismaleimides with excellent heat resistance and dimensional stability for advanced composites are presented. First, a new kind of carborane-containing mono-maleimido-terminated monomer 1-(4-tolyl)-2-(4-maleimido phenyl)- o-carborane (CB-MI) was synthesized and characterized by FT-IR and 1H-NMR. Then, it was used as a modifier for bismaleimide resin 4,4’-bismaleimidodiphenylmethane (BDM) with different weight fraction of CB-MI. The curing behavior and thermal property of the CB-MI/BDM resin systems were studied and presented here. Results displayed that a wide processing window and low curing temperature provided a good processability for the CB-MI/BDM resin system. Due to the effect of carborane groups, the char yield at 600°C of the cured resin systems tended to be increased with the addition of CB-MI. Moreover, the coefficient of thermal expansion of the resin was found to be reduced with the increase of CB-MI, indicative of a remarkable dimensional stability. This study might open up great opportunities for the preparation and design of various novel bismaleimides in a simple and feasible way and the resins with good thermal property and processability at the same time.

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High heat resistant carbon fiber/polyimide composites with neutron shielding performance

Cited by 22 publications

References 32 publications

Synthesis of MOFs/GO composite for corrosion resistance application on carbon steel

Synthesis of MOFs/GO composite for corrosion resistance application on carbon steel

Benzoxazine resin as an interesting building block for advanced neutrons shields

Carborane-containing bismaleimide resins with excellent heat resistance and dimensional stability

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