Comparative studies of nitrogen plasma and argon plasma treatment on the strength of PBO fibre reinforced high-temperature resistant thermoplastic composite

Sudheendra, K; Vinodhini, Jennifer; Govindaraju, M.

doi:10.1177/0954008320987296

Cited by 8 publications

(9 citation statements)

References 32 publications

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“…As the potential difference required to ionize nitrogen/air is higher than that of argon, a higher energy was used in case of the nitrogen/air plasma treatment. [ 42 ] The treatment time was optimized in the previous study, [ 31 ] and was fixed at 300 s.…”

Section: Methodsmentioning

confidence: 99%

“…The PEK film was analyzed using the sessile drop method while the carbon fiber surface was characterized by micro‐Wihelmy method. [ 31,43 ] Different methodologies of characterization was adopted as sessile drop method over carbon filament exhibited poor repeatability and thus for better precision and accuracy Micro‐Wilhelmy method was used. The polar (

γ_{s}^{p})

and dispersive (

γ_{s}^{d})

components of the surface energy were calculated according to the Owens' two liquid methods by the following equations: [ 44 ]

γ_{L}^{T} (1 + \cos θ) = 2 (\sqrt{γ_{s}^{D} γ_{L}^{D}} + \sqrt{γ_{s}^{P} γ_{L}^{P}}),

γ_{S}^{T} = γ_{S}^{D} + γ_{S}^{P},

where the superscripts T, D, and P represent the total, dispersive and polar component of the surface energy respectively while the subscript S and L represent solid surface and liquid medium respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The PEK film was analyzed using the sessile drop method while the carbon fiber surface was characterized by micro-Wihelmy method. [31,43] Different methodologies of characterization was adopted as sessile drop method over carbon filament exhibited poor repeatability and thus for better precision and accuracy Micro-Wilhelmy method was used. The polar (γ p s Þ and dispersive (γ d s Þ components of the surface energy were calculated according to the Owens' two liquid methods by the following equations: [44] γ…”

Section: Methodsmentioning

confidence: 99%

“…[25][26][27][28] Among the surface modification techniques, plasma treatment is found to have a number of advantages like uniformity, [29] enhancement at both chemical and physical levels, [30] no solvents or chemicals are involved and retainment of bulk properties post treatment. [31] Plasma treatment is effective in enhancing the surface roughness [32] as well as introduction of active functional groups [33] on the surface enabling better surface wetting and adhesion characteristics with the resin. [34,35] Plasma modification is achieved by exposure to plasma generated in the presence of variety of gasses such as oxygen, argon, air and nitrogen.…”

Section: Introductionmentioning

confidence: 99%

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An investigation to enhance the mechanical property of high‐performance thermoplastic composite through different plasma treatment

et al. 2022

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In this study, polyetherketone was investigated as the high-performance thermoplastic resin for fabrication of carbon fiber reinforced polymer composite.The composites were manufactured by film-fiber stacking process and consolidation by compression molding. The surfaces are modified with different plasma treatment (argon, nitrogen, and air) to overcome the inert nature of carbon fiber surface and subsequent changes were analyzed through atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. The effectivity of each type of plasma treatment in improvement of the surface-roughness, composition, and wettability were quantified and the subsequent effect on the mechanical properties was demonstrated by measurement of tensile properties and interlaminar shear strength (ILSS). The changes in interfacial morphology of the composite post plasma treatment have been characterized by scanning electron microscopy. From the test results, nitrogen plasma was found to most effective with a 43% increase in mean tensile strength and 25% increase in ILSS when compared to untreated composite.

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Section: Methodsmentioning

confidence: 99%

γ_{s}^{p})

and dispersive (

γ_{s}^{d})

components of the surface energy were calculated according to the Owens' two liquid methods by the following equations: [ 44 ]

γ_{L}^{T} (1 + \cos θ) = 2 (\sqrt{γ_{s}^{D} γ_{L}^{D}} + \sqrt{γ_{s}^{P} γ_{L}^{P}}),

γ_{S}^{T} = γ_{S}^{D} + γ_{S}^{P},

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An investigation to enhance the mechanical property of high‐performance thermoplastic composite through different plasma treatment

et al. 2022

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“…Generally, plasma treatment modifies the surface properties of the samples exposed and helps in increasing the wettability and bonding capability of the surface. [ 16 ] This treatment physically and chemically interacts with materials. The plasma machine was operated for 600 s at 19 W. The vacuum chamber of diameter 500 × 800 cm 2 made of steel was used and the electrode distance from cathode to the anode was maintained at 5 cm.…”

Section: Methodsmentioning

confidence: 99%

Novel thermally insulated ultra‐lightweight fireproof and high impact resistance advanced hybrid composite

Vinodhini

Sudheendra

et al. 2022

Polymer Engineering & Sci

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This work investigates the development of ultra-lightweight, hybrid fireproof composite material. The composite panels are made of 2,5-polybenizimidazole (ABPBI) a thermally stable high-performance fiber and poly ether ketone (PEK) a high-performance film. The surface of ABPBI fiber and PEK film were treated by nitrogen plasma to increase the adhesion characteristics. The composite was fabricated through the stacking method. The hybrid composite was developed by sandwiching silicone rubber foam between surface-treated ABPBI/PEK composite. The entire sample was covered with surface-treated ABPBI fiber using silicone adhesive. The hybrid composite was tested in exposure to dry ice, fire and compression tests. After exposure to fire for 10 min, negligible loss of material was noticed. The Scanning Electron Microscopy (SEM) analysis at the interface indicated strong interfacial adhesion between the PEK matrix and the ABPBI fiber. Limiting oxygen index (LOI) of ABPBI fiber and PEK film appear to be promising in terms of fire resistivity and hence the hybrid composite of PEK/ABPBI sandwiched by silicone foam results one of the best fireproof composite. This composite also shows significant improvement of impact and compressive strength. Analysis under Ansys Fluent software also shows similar results.

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Branched Fluorine/Adamantane Interfacial Compatibilizer for PBO Fibers/Cyanate Ester Wave‐Transparent Laminated Composites

et al. 2023

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Branched fluorine/adamantane PBO precursor (preFABPBO), synthesized via random co-condensation between 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoro propane, 1,3-adamantanedicarbonyl dichloride, and trimesoyl chloride, is performed as interfacial compatibilizer, bisphenol A dicyanate ester (BADCy) resin as polymer matrix, and poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers as reinforcements to prepare PBO fibers/FABPBO-BADCy wave-transparent laminated composites by high temperature molding. The mechanical properties, wave-transparent performances, and heat resistances of PBO fibers/BADCy composites are simultaneously improved by the addition of preFABPBO. The interlaminar shear strength (ILSS) and flexural strength of PBO fibers/FABPBO-BADCy composites are 48.9 and 665.3 MPa, respectively, increased by 33.2% and 13.3% compared to those of PBO fibers/BADCy composites (36.7 and 587.4 MPa). The dielectric constant and dielectric loss values at 10 6 Hz are 2.53 and 0.003, respectively, lower than those of PBO fibers/BADCy composites (3.06 and 0.006), and the corresponding wave transmission efficiency is 94.8%, which also presents excellent stability over the wide temperature (25-200 °C ) and frequency range (10 3 -10 7 Hz and 8.2-12.4 GHz). Meanwhile, the heat resistance index and glass transition temperature are 229.9 °C and 247.5 °C , also better than those of PBO fibers/BADCy composites (229.6 °C and 247.1 °C ).

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Comparative studies of nitrogen plasma and argon plasma treatment on the strength of PBO fibre reinforced high-temperature resistant thermoplastic composite

Cited by 8 publications

References 32 publications

An investigation to enhance the mechanical property of high‐performance thermoplastic composite through different plasma treatment

An investigation to enhance the mechanical property of high‐performance thermoplastic composite through different plasma treatment

Novel thermally insulated ultra‐lightweight fireproof and high impact resistance advanced hybrid composite

Branched Fluorine/Adamantane Interfacial Compatibilizer for PBO Fibers/Cyanate Ester Wave‐Transparent Laminated Composites

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