Self-assembled montmorillonite–carbon nanotube for epoxy composites with superior mechanical and thermal properties

Zeng, Shaohua; Shen, Mingxia; Lu, Yang; Xue, Yijiao; Lu, Fengling; Chen, Shangneng

doi:10.1016/j.compscitech.2018.04.035

Cited by 39 publications

(8 citation statements)

References 30 publications

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“…The effects of biochar loadings on the microstructure were consistent with those of mechanical properties. Based on these, good dispersion and unique interface structure contributed to better mechanical properties of biochar added composites [21] …”

Section: Resultsmentioning

confidence: 98%

Rheological Behavior of High Density Polyethylene (HDPE) Filled with Corn Stalk Biochar

et al. 2021

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Corn stalk (CS) was used as raw material to prepare biochar. Corn stalk biochar /HDPE composite (CSB/HDPE) was prepared by extrusion method with 3 wt% MA added. The effect of corn stalk biochar (CSB) on the rheological properties of HDPE under different conditions was studied. The interface performance of each component with HDPE was studied by using the Harmonic‐Mean interface equation. The purpose is to provide guidance for the processing and molding of materials by studying the rheological properties and interface properties of the materials. The results showed that, compared with CS, the interfacial tension between CSB and HDPE was lower; Research on dynamic rheological properties showed that an appropriate amount of CSB can improve the processing performance of HDPE; With the increase of CSB content, the stability of the composite system decreased, but the elasticity and viscosity increased correspondingly. The steady‐state rheological properties showed that shear induced compatibility occurs in the composite system at high shear rates; Compared with HDPE, 50 %CSB/HDPE was more sensitive to temperature and had higher viscous flow activation energy. In addition, the tensile strength and flexural strength of the composite material reached the maximum when the CSB content was 50 %, which were 28.69 MPa and 30.14 MPa, respectively. Overall, the study of rheological properties of materials provides guidance for the application of CSB in polymers and broadens the way of waste resources utilization.

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Section: Resultsmentioning

confidence: 98%

Rheological Behavior of High Density Polyethylene (HDPE) Filled with Corn Stalk Biochar

et al. 2021

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“…Similar results have been reported in other studies. The incorporation of clay-based fillers has been reported to increase the T g up to 20 °C for various polymers. − The higher value of T g for the paint film colored with DCNP (vs neat paint film) reveals a favorable effect of DCNP on the paint’s thermomechanical stability that would be very critical in practical application. If T g of the applied thermoplastic pavement marking is low (somewhere in the vicinity of its application temperature), the paint film would be in or close to its viscoelastic state and thus have low mechanical strength.…”

Section: Results and Discussionmentioning

confidence: 99%

A Yellow Lead-Free Pavement Marking Paint Based on Hybrid Dye-Clay Nanopigment: Morphological, Thermomechanical, and Photophysical Properties

Mahmoodi

Dadras

Jiryaei

et al. 2021

ACS Sustainable Chem. Eng.

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This study utilized a yellow hybrid dye-clay nanopigment (DCNP) in a paint formulation to prepare a lead-free, eco-friendly pavement marking paint as an alternative to the conventional lead chromate (PbCrO4) paints. Two paint formulations based on DCNP and PbCrO4 were fabricated using a mechanical mixing method followed by sonication. The paint films were obtained via solution casting. The morphological property investigation demonstrated that the DCNP was well dispersed in the polymeric paint film with the formation of a partially intercalated/exfoliated structure. The film colored with DCNP showed a 75% improvement in storage modulus (E′), much higher than that of the film filled with PbCrO4 (39%). DCNP increased the glass transition temperature (T g) of the paint by 5 °C, implying a favorable impact of this pigment on the pavement marking’s thermomechanical stability. The photophysical characterization revealed that the brilliant yellow color of the paint featured the yellow component value (+b*) of 69.9 units. Furthermore, the pavement marking standard colors were achieved with a considerably smaller amount of colorant when using DCNP due to its exceptional color strength. In conclusion, the remarkable functional properties of the nanopigment DCNP indicate its great potential as a promising alternative to lead chromate in pavement markings.

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“…The rate of decomposition of the nanocomposites show lower values when compared to the pure epoxy (control sample) and this indicates that the presence of MWCNTs in the polymeric matrix structure acts as a flame retardant. 28 Finally, the char residue after thermal analysis indicates that the incorporation of nanotubes decreases the percentage of active coal. 29…”

Section: Resultsmentioning

confidence: 99%

Analysis of mechanical and thermal properties of epoxy multiwalled carbon nanocomposites

Neto

Cavalcanti

Queiroz

et al. 2020

Journal of Composite Materials

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The main objective of this study was to investigate the efficiency of the sonication process and of multi-walled carbon nanotubes (MWCNTs) content on the mechanical and thermal properties of an epoxy matrix. Three different sonication powers (25, 50 and 75 W) were used to disperse the MWCNTs (0.2%, 0.4% and 0.6% wt.) in the epoxy matrix. Tensile tests were performed to determine the mechanical properties of the nanocomposites, while the thermal properties were determined by the thermogravimetric analysis (TGA) and the Differential Exploratory Calorimetry (DSC). Finally, a SEM analysis was used to investigate the morphology of the tensile fractured surface and the dispersion of the nanotubes in the polymeric matrix, since the quality of dispersion influences the mechanical and thermal properties of nanocomposites. It was found that the addition of carbon nanotubes to the epoxy matrix and the parameters of the sonication process affect the mechanical and thermal properties of nanocomposites. An increase of approx. 14% in tensile strength and 15% of Young’s modulus, when compared to the pure epoxy matrix was found for 75 W sonication power output and 0.6% MWCNTs weight percentage. The thermal analysis indicated that the presence of MWCNTs increased the Tonset of the nanocomposites when compared to pure epoxy resin. Finally, increasing the sonication power output leads to higher Tg of the nanocomposites studied here.

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Self-assembled montmorillonite–carbon nanotube for epoxy composites with superior mechanical and thermal properties

Cited by 39 publications

References 30 publications

Rheological Behavior of High Density Polyethylene (HDPE) Filled with Corn Stalk Biochar

Rheological Behavior of High Density Polyethylene (HDPE) Filled with Corn Stalk Biochar

A Yellow Lead-Free Pavement Marking Paint Based on Hybrid Dye-Clay Nanopigment: Morphological, Thermomechanical, and Photophysical Properties

Analysis of mechanical and thermal properties of epoxy multiwalled carbon nanocomposites

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