Influence of crystallinity on interlaminar fracture toughness and impact properties of polyphenylene sulfide/carbon fiber laminates

Batista, Natássia Lona; Αναγνωστόπουλος, Κωνσταντίνος; Botelho, Edson Cocchieri; Kim, Hyonny

doi:10.1016/j.engfailanal.2020.104976

Cited by 21 publications

(12 citation statements)

References 21 publications

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“…The degree of crystalline integrity of the material is effectively improved, leading to an increase in the crystallinity of PPS and further refinement of the crystalline morphology [ 45 ]. During the heat treatment process, the crystallinity of PPS rises, resulting in a tighter arrangement of its molecular chains and a decrease in porosity, leading to a composite material with no room for molecular chain segments to move upon impact and a decrease in impact strength [ 46 ]. Therefore, as the percentage of thin films in the composite PPS resin rises, the impact strength of the composite material decreases.…”

Section: Resultsmentioning

confidence: 99%

Effect of Polyphenylene Sulphide Particles and Films on the Properties of Polyphenylene Sulphide Composites

Sun

Li²,

Zhu

et al. 2022

Materials

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Glass fibre-reinforced polyphenylene sulphide composites were prepared by hot-pressing glass fibre fabrics and polyphenylene sulphide resins. The effects of different polyphenylene sulphide resin forms on the properties of the composites were investigated using scanning electron microscopy, dynamic mechanical analyser, pendulum impact tester and universal testing machine. The results showed that different polyphenylene sulphide resin forms had nearly no effect on the glass transition temperature of the composites, which are all located at about 100 ℃. Compared with other polyphenylene sulphide composites, the bending strength of polyphenylene sulphide film composites was the highest, reaching 314.58 MPa, and the impact strength of polyphenylene sulphide particle composites was the highest, reaching 245.4 KJ/m2. The bending strength and impact strength were calculated using a standard fraction, and the highest standard fraction was obtained when the ratio of polyphenylene sulphide film to particle was 1:2. The impact strength and bending strength could be obtained. The impact strength reached 229.8 KJ/m2, and the bending strength reached 284.16 MPa.

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Section: Resultsmentioning

confidence: 99%

Effect of Polyphenylene Sulphide Particles and Films on the Properties of Polyphenylene Sulphide Composites

Sun

Li²,

Zhu

et al. 2022

Materials

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“…When the content of GQDs is low, as a nucleating agent, PPS molecules crystallize around GQDs to form a strong interface. [ 52 ] Interface bonding makes the interface layer effectively transfer the load to GQDs during the tensile process of the composite system, so as to significantly improve the tensile properties and impact strength of the material. With the continuous increase of GQDs content, the dispersion of GQDs in PPS/GQDs nanocomposites decreases and agglomeration occurs, which is not conducive to stress transfer, resulting in poor stress concentration points and the reduction of tensile strength and impact strength.…”

Section: Resultsmentioning

confidence: 99%

Preparation, Crystallization Behavior, Simultaneous Spectroscopic and Rheological Characterization of Polyphenylene Sulfide/Graphene Quantum Dots Nanocomposites

Wang

Zhen

et al. 2022

Macro Chemistry & Physics

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Graphene quantum dots are prepared conveniently and quickly with brown-black humic acid as raw material by green oxidation process. The average size of GQDs is about 12 nm with a lattice spacing of 0.26 nm and GQDs have hydroxyl and carboxyl functional groups on their surface. Moreover, photoluminescence testing shows that GQDs have excellent photoluminescence properties with maximum excitation/emission wavelength at 347/478 nm. Next, polyphenylene sulfide (PPS)/GQDs nanocomposites are prepared by melt blending with GQDs and PPS. Mechanical tests show that the tensile strength and the impact strength of PPS can be greatly improved when the amount of GQDs is 0.5 wt% and tensile strength and the impact strength are increased by 53.38% and 375%, respectively. The nonisothermal crystallization of PPS/GQDs nanocomposites is investigated by differential scanning calorimetry, which shows that GQDs effectively increase the crystallization rate of PPS. The crystallization of PPS/GQDs nanocomposites during cooling are studied by Rheonaut technology analysis. The rheological results show that the storage modulus of PPS/GQDs (0.5 wt%) nanocomposites is increased by about 1.04 times than that of pure PPS, and 2D IR spectrum confirms that GQDs accelerate crystallization of PPS. Rheological studies present that GQDs have good compatibility with PPS.

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“…For CF/PPS composites, the crystallinity can reach more than 50% when the cooling rate was low. 36 For the process of AFP, the cooling rate can exceed 300 °C/s. 10 Therefore, the crystallinity of composites made by AFP was usually at a low level.…”

Section: Resultsmentioning

confidence: 99%

Effects of processing parameters on the performance of carbon fiber reinforced polyphenylene sulfide laminates manufactured by laser-assisted automated fiber placement

Zhao

Chen

Zhang

et al. 2021

Journal of Composite Materials

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In situ consolidation of thermoplastic composites can be realized through laser-assisted automated fiber placement (AFP) technology, and the properties of composites were significant affected by the process parameters. In this work, the effects of process parameters on the properties of continuous carbon fiber–reinforced polyphenylene sulfide (CF/PPS) composites manufactured by laser-assisted AFP were investigated. Four-plies CF/PPS prepreg was laid under the combination of different process parameters and the morphology, void content, crystallinity, and inter-laminar shear strength (ILSS) of the composites were characterized. It turned out that the resin distribution on the surface of the composites could be significantly improved by increasing the laser temperature and compaction pressure. The highest crystallinity of the composites reached 46% at tool temperature of 120°C while the value was only 18% when the tool temperature was 40°C. Meanwhile, with the increasing compaction force ranging of 500–2000 N, the void content of the composites decreased obviously. The ILSS was evaluated through double notch tensile shear test. The results indicated that the mechanical properties of the composites were dominated by void content rather than crystallinity.

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Influence of crystallinity on interlaminar fracture toughness and impact properties of polyphenylene sulfide/carbon fiber laminates

Cited by 21 publications

References 21 publications

Effect of Polyphenylene Sulphide Particles and Films on the Properties of Polyphenylene Sulphide Composites

Effect of Polyphenylene Sulphide Particles and Films on the Properties of Polyphenylene Sulphide Composites

Preparation, Crystallization Behavior, Simultaneous Spectroscopic and Rheological Characterization of Polyphenylene Sulfide/Graphene Quantum Dots Nanocomposites

Effects of processing parameters on the performance of carbon fiber reinforced polyphenylene sulfide laminates manufactured by laser-assisted automated fiber placement

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