Fabrication and mechanical properties of <scp>TiO<sub>2</sub></scp> polymer‐matrix nanocomposite and its <scp>3D</scp> woven composite

Gong, Yaohua; Zhang, Xun’an; Huang, Tao; Li, Xinghao; Suo, Yongyong; Zhao, Shuyi

doi:10.1002/pc.25931

Cited by 10 publications

(4 citation statements)

References 57 publications

(69 reference statements)

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“…Besides, local separations are found at the interface between the MNPs agglomeration and adhesive matrix, suggesting a relatively weak interfacial interaction and possible weakening 45 . With the increase of MNPs contents, the resin‐rich region exhibits more deflections.…”

Section: Resultsmentioning

confidence: 99%

“…44 Besides, local separations are found at the interface between the MNPs agglomeration and adhesive matrix, suggesting a relatively weak interfacial interaction and possible weakening. 45 With the increase of MNPs contents, the resin-rich region exhibits more deflections. Hence, the interfacial interaction between adhesive and MNPs should be carefully treated and enhanced for magnetocuring process in future practice.…”

Section: Fracture Morphologymentioning

confidence: 98%

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Curing kinetics and mechanical properties of magnetocured epoxy adhesive doped with magnetic nanoparticles

Zhang,

Wu,

Zhang

et al. 2023

Polymer Composites

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The curing kinetics as well as the corresponding tensile properties of magnetocured epoxy adhesive doped with magnetic nanoparticles (MNPs) is investigated in this article, where the curing reaction process is depicted using an isoconversional model. It is found that the tensile modulus and strength strongly depend on the curing degree (CD) and mass fraction of MNPs when curing degree varies from 0.7 to 1.0. When curing degree is 0.7, the tensile modulus of the adhesive with 15%wt and 30%wt MNPs increases by 46% and 592% compared to that with 10%wt MNPs, respectively, but the increase is not obvious when curing degree is higher than 0.9. This difference is more significant in the tested tensile strength, where the samples with 15%wt and 30%wt MNPs are 7.08 and 20.83 times higher than the one with 10%wt MNPs under 0.7 curing degree. However, the corresponding tensile strength with 1.0 curing degree is reduced by 4% and 35%, respectively. Scanning electron microscopy observation reveals different fracture mechanisms caused by curing degree variation. Failure occurs in the adhesive region for curing degree below 0.9, while failure initiates and propagates at the interface between adhesive and MNPs for curing degree above 0.9. It can be concluded that the intrinsic property of the adhesive determines the tensile properties when the curing degree is lower than 0.9, while the weak interfacial interaction between adhesive and MNPs introduces reverse effect when the curing degree is higher than 0.9. This competitive relationship should be considered in the design of magnetocuring process.Highlights Enhancement in adhesive modulus from MNPs addition degrades as CD approaches 1. Intrinsic property of adhesive determines the tensile strength with CD < 0.9. Weak interface dominates the failure mechanism in adhesive with CD > 0.9.

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Section: Resultsmentioning

confidence: 99%

Section: Fracture Morphologymentioning

confidence: 98%

Curing kinetics and mechanical properties of magnetocured epoxy adhesive doped with magnetic nanoparticles

Zhang,

Wu,

Zhang

et al. 2023

Polymer Composites

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“…Guo et al 32 found that TiO 2 nanoparticles were successfully incorporated to form nanocomposites using an injection molding technique. Gong et al 33 noted enhancement in compressive strength and fracture toughness of nano‐TiO 2 incorporated woven fabric‐reinforced composites. Mahesha et al 34 found that there is an excellent improvement in mechanical property of jute‐hemp fiber with the incorporation of titanium oxide particles.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of titanium oxide filled ramie fiber based hybrid composites

Mahapatra

Satapathy

2023

Polymer Composites

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This investigation aims to develop and characterize a class of multi‐phase hybrid composites consisting of bi‐directional ramie fibers, epoxy resin and micro‐sized titania (TiO2) particles in different proportions. Conventional hand layup technique is followed for fabrication of these composite slabs with fixed fiber fraction but different filler loadings of 0, 10, 20, and 30 wt%. The composites are subjected to different physical, compositional, and mechanical characterization tests under controlled laboratory conditions. The microstructural features of the composites are studied using scanning electron microscopy and stereo‐microscopy. For the compositional analysis, Fourier transform‐infrared spectroscopy (FTIR) and X‐ray diffraction (XRD) technique are adopted. The functional groups present in the constituent materials are identified and so also the different phases in the composites. The different characterization tests reveal that with the incorporation of hard titania particles, the tensile, flexural, inter‐laminar shear strength, hardness, and impact strength improve. Similarly, the density and moisture absorption behavior are also found to be greatly affected by the inclusion of fillers. Armed with reasonably good mechanical properties and improved hardness, these epoxy‐ramie composites filled with titania micro‐particles may possibly find applications as functional materials in potential areas like wear prone situations.Highlights Hybridization of ramie‐epoxy composite by additional reinforcement of TiO2. Physical properties of the composites are affected by the inclusion of fillers. Mechanical properties of composites improved with filler content. The developed composites can be used for wear resistant applications.

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“…Previous studies have demonstrated that incorporating nanofillers into EP is the most efficient way to enhance the toughness of EP. For instance, graphene oxide (GO), [15] nanoclay, [16] graphene nanoplatelets (GnPs), [17] carbon nanotubes (CNTs), [13,[18][19][20] MoS 2, [7] SiO 2, [21] TiO 2, [9,22,23] and Si 3 N 4 [24] have been used to improve the toughness of EP polymers. However, owing to the easy agglomeration and the deficient active groups of those nanoparticles, the dispersion of nanoparticles in matrix is poor and the filler/matrix interface is weak, resulting in inefficient load transfer.…”

mentioning

confidence: 99%

Constructing nano SiO₂‐anchored hyperbranched polymer hybrid architectures for thermosetting epoxy systems with outstanding mechanical property

et al. 2022

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A hybrid architecture system was developed via in situ formation of SiO 2 nanoparticles in the cavities of COOH-terminated hyperbranched aromatic polyester (CHBPE). Results show that SiO 2 nanoparticles can be successfully anchored in the cavities of CHBPE owing to the hyperbranched structure of CHBPE. The resulting CHBPE-SiO 2 system is applied to epoxy (EP) resins using 4,4 0 -diaminodiphenyl sulfone (DDS) as curing agent. Because -COOH groups in CHBPE-SiO 2 system can react with epoxy groups, the conversion of epoxy groups in EP/CHBPE-SiO 2 systems can be improved, and the strong interface interaction between EP matrix and CHBPE-SiO 2 can be realized. The resulting EP/CHBPE-SiO 2 composites have excellent mechanical property. When the contents of CHBPE-SiO 2 are 8%-20%, the impact strengths, the flexural strengths and the tensile strengths of EP/CHBPE-SiO 2 composites can reach 24-46 kJ/m 2 , 121-165 MPa and 57-71 MPa, respectively, which are 16.1-31.9-fold, 4.0-5.9-fold and 8.9-11.3-fold higher than those of pure EP, respectively. EP/16%CHBPE-SiO 2 composites have the optimal comprehensive mechanical property. The initial thermal decomposition temperature at 5 wt% weight loss (T di ) and glass-transition temperature (T g ) of EP composites can increase by 70-84 C and 30-43 C, respectively, after introducing 8%-20% CHBPE-SiO 2 . Moreover, the dielectric constants of EP composites with 8%-20% CHBPE-SiO 2 decrease by 3%-11% as compared to pure EP. The high dispersion of SiO 2 in EP/CHBPE-SiO 2 composite and the strong interface interaction between EP matrix and CHBPE-SiO 2 can contribute to the outstanding comprehensive property of EP/CHBPE-SiO 2 composite.mechanical properties, microstructure, nanotechnology, thermal properties, thermosets | INTRODUCTIONEpoxy (EP) resins have desirable properties including excellent mechanical and electrical properties, easy processability and good chemical resistance, which allow them to be widely used in coatings, adhesives, structural composites, and electronic materials. [1][2][3][4][5][6] However, the poor toughness of EP matrix, resulting from the high crosslinking density, [7][8][9] severely limits its application in requiring high impact strength. [10][11][12][13][14] Therefore, much

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Fabrication and mechanical properties of TiO₂ polymer‐matrix nanocomposite and its 3D woven composite

Cited by 10 publications

References 57 publications

Curing kinetics and mechanical properties of magnetocured epoxy adhesive doped with magnetic nanoparticles

Curing kinetics and mechanical properties of magnetocured epoxy adhesive doped with magnetic nanoparticles

Development and characterization of titanium oxide filled ramie fiber based hybrid composites

Constructing nano SiO₂‐anchored hyperbranched polymer hybrid architectures for thermosetting epoxy systems with outstanding mechanical property

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Fabrication and mechanical properties of TiO2 polymer‐matrix nanocomposite and its 3D woven composite

Cited by 10 publications

References 57 publications

Curing kinetics and mechanical properties of magnetocured epoxy adhesive doped with magnetic nanoparticles

Curing kinetics and mechanical properties of magnetocured epoxy adhesive doped with magnetic nanoparticles

Development and characterization of titanium oxide filled ramie fiber based hybrid composites

Constructing nano SiO2‐anchored hyperbranched polymer hybrid architectures for thermosetting epoxy systems with outstanding mechanical property

Contact Info

Product

Resources

About

Fabrication and mechanical properties of TiO₂ polymer‐matrix nanocomposite and its 3D woven composite

Constructing nano SiO₂‐anchored hyperbranched polymer hybrid architectures for thermosetting epoxy systems with outstanding mechanical property