Structural, chemical and mechanical properties of phosphate glass fibers

Saloumi, Nezha; Bouchti, Mehdi El; Tamraoui, Youssef; Manoun, Bouchaib; Hannache, Hassan; Cherkaoui, Omar

doi:10.1016/j.jnoncrysol.2019.119587

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…This indicates an increase in the number of structural units Q 3 in comparison with Q 2 whence it follows that the degree of structure polymerization increases. The band observed at 920-930 cm −1 is attributed to the symmetric vibrations in P-O links of orthophosphate groups (PO4) [8,15]. The band around 1140 cm −1 is attributed to the symmetric stretching mode of O-P-O non-bridging oxygen, (PO2)sym., in phosphate tetrahedral [8].…”

Section: Discussionmentioning

confidence: 99%

“…The band around 1140 cm −1 is attributed to the symmetric stretching mode of O-P-O non-bridging oxygen, (PO 2 ) sym. , in phosphate tetrahedral [8].…”

Section: Discussionmentioning

confidence: 99%

“…Phosphorous glass and fiberglass materials are widely used in biomedical, optical and composite applications [8,9]. Phosphorus is an element incompatible with ferriferous silica-alumina systems.…”

Section: Introductionmentioning

confidence: 99%

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Crystallization and Thermal Stability of the P-Doped Basaltic Glass Fibers

2019

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The present research focuses on the influence of phosphorus oxide additives on the structure and thermal properties of the basalt glasses, produced in the form of fibers, i.e. at very high quenching speed. Basaltic glass fibers with various P2O5 contents were produced in two stages. In the first stage, the bulk glasses were prepared by adding variable amounts of (NH4)4P2O7 to milled natural andesitic basalt in order to obtain samples containing 2, 4, and 6 wt % P2O5. In the second stage, the glass fibers were obtained using a laboratory-scale system. Basalt glass fibers were characterized by Raman spectroscopy to obtain information on the structure of the obtained fibers, and by DSC-TG and XRD analyses to determine the change in crystallization mechanism of basaltic fibers. The hydrostatic weighing was used for the determination of glasses density. An increase in the content of P2O5 to 6 wt % leads to a decrease in the density of glass fibers due to the polymerizing effect of phosphorus oxide. The obtained X-ray diffraction patterns indicate that all samples are X-ray amorphous. The Raman results show that the decrease in the intensity of the line corresponding to vibrations of the structural units Q2 (about 920 cm–1) with respect to the line corresponding to Q3 (about 1125 cm–1) is related to an increase of P2O5 content. This also indicates the increase in polymerization degree of glass structure. DSC and XRD data also found out the change of phase transformations order with an increase of phosphorus oxide. The crystallization in natural and modified basalt glass fibers begins with spontaneous spinel-like phase formations that become nucleation sites for the precipitation of monoclinic pyroxene as a major phase. With an increase in the P2O5 content, there is a tendency to a decrease in the pyroxene at higher temperature, as a result of which, the hematite crystallizes at lower temperatures. That is associated with the activation of liquation processes, accompanied by the formation of amorphous phases with different viscosities with an increase in the concentration of P2O5. In conclusion, all the obtained data indicate the prospect of using the proposed approach to obtain basalt glass fibers with enhanced thermal and mechanical stability.

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Section: Discussionmentioning

confidence: 99%

“…The band around 1140 cm −1 is attributed to the symmetric stretching mode of O-P-O non-bridging oxygen, (PO 2 ) sym. , in phosphate tetrahedral [8].…”

Section: Discussionmentioning

confidence: 99%

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Crystallization and Thermal Stability of the P-Doped Basaltic Glass Fibers

2019

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“…A comparative study on the tensile strength and moduli of glass fibers was performed to compare the obtained results with those found in the literature. The developed phosphate glass fibers in this study exhibit physical properties meeting or exceeding the mechanical properties of conventional glass fibers [ 21 , 33 , 34 , 35 ].…”

Section: Resultsmentioning

confidence: 99%

Development and Characterization of Phosphate Glass Fibers and Their Application in the Reinforcement of Polyester Matrix Composites

et al. 2022

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This study focused on the production and characterization of phosphate glass fibers (PGF) for application as composite reinforcement. Phosphate glasses belonging to the system 52P2O524CaO13MgO (11-(X + Y)) K2OXFe2O3YTiO2 (X:1, 3, 5) and (Y:0.5, 1) were elaborated and converted to phosphate glass fibers. First, their mechanical properties and chemical durability were investigated. Then, the optimized PGF compositions were used afterward as reinforcement for thermosetting composite materials. Polyester matrices reinforced with short phosphate glass fibers (sPGF) up to 20 wt % were manufactured by the contact molding process. The mechanical and morphological properties of different sPGF-reinforced polyester systems were evaluated. The choice between the different phosphate-based glass syntheses (PGFs) was determined by their superior mechanical performance, their interesting chemical durability, and their high level of dispersion in the polyester matrix without any ad sizing as proven by SEM morphological analysis. Moreover, the characterization of mechanical properties revealed that the tensile and flexural moduli of the developed polyester-based composites were improved by increasing the sPGF content in the polymer matrix in perfect agreement with Takayanagi model predictions. The present work thus highlights some promising results to obtain high-quality phosphate glass fiber-reinforced polyester parts which can be transposed to other thermosetting or thermoplastic-based composites for high-value applications.

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Physico‐chemical, thermal, and mechanical properties of PLA‐nHA nanocomposites: Effect of glass fiber reinforcement

Zheng

Wang

et al. 2020

J of Applied Polymer Sci

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In this study, tri‐layered composites were prepared by reinforcing poly‐lactic acid (PLA) nano‐hydroxyapatite (n‐HA) (1 and 5 wt%) and 20 mol% continuous phosphate glass fibers (PGF). Initially, the effect of addition of 1 and 5% n‐HA on the structural, thermal, mechanical, and thermo‐mechanical properties of 100% PLA was investigated. With 5 wt% n‐HA addition the tensile modulus (TM), flexural modulus (FM), tensile strength (TS), and flexural strength (FS) of 100% PLA was improve by 14.9, 47.4, 6, and 32.9%, respectively. Whereas, the un‐notched impact strength of the nanocomposites suffer 2% deterioration. However, T g decreased by 0.3°C and T c increased by 10°C as 5 wt% n‐HA was added to 100% PLA. Afterwards, the 5% n‐HA/PLA composite were reinforced with 20 mol% continuous PGF and the TM, FM, TS, and FS of the tri‐layered composites were 162.6, 412.5, 28.4, and 157.4% higher as compared to 100%PLA. Furthermore, the storage modulus of the 1% n‐HA‐filled composites was 500 MPa lower than 100%PLA, while 5 wt% n‐HA‐filled composites showed similar storage modulus as 100% PLA. 5 wt% n‐HA‐filled composite showed the highest peak of loss modulus which may be attribute to the chain segment of PLA matrix after the incorporation of HA. Thus, n‐HA and PGF reinforcement resulted in improved mechanical properties of the composites and have great potential as biodegradable bone fixation device with enhanced load‐bearing ability.

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Structural, chemical and mechanical properties of phosphate glass fibers

Cited by 10 publications

References 22 publications

Crystallization and Thermal Stability of the P-Doped Basaltic Glass Fibers

Crystallization and Thermal Stability of the P-Doped Basaltic Glass Fibers

Development and Characterization of Phosphate Glass Fibers and Their Application in the Reinforcement of Polyester Matrix Composites

Physico‐chemical, thermal, and mechanical properties of PLA‐nHA nanocomposites: Effect of glass fiber reinforcement

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