Low thermal and high electrical conductivity in hollow glass microspheres covered with carbon nanofiber–polymer composites

Herrera-Ramírez, Luis C.; Cano, Manuela; Villoria, Roberto Guzmán de

doi:10.1016/j.compscitech.2017.08.020

Cited by 54 publications

(29 citation statements)

References 52 publications

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“…This behavior was already expected because, in the literature, it has been reported in several studies that the addition of HGM did not significantly modify the thermal properties in polymer matrices such as polyurethane acrylic resin or polybutylene succinate …”

Section: Resultssupporting

confidence: 67%

“…for high‐impact PP (HIPP) composites, by Patankar et al . for high‐density PE (HDPE) and HGM composites, and by Herrera‐Ramírez et al . for polyurethane acrylic resin and HGM composites coated with carbon nanofibers.…”

Section: Resultsmentioning

confidence: 99%

“…In the literature, a low compatibility between the HGM and different polymer matrices has been reported. However, the use of compatibilizing agents such as polyethylene‐ graft ‐maleic anhydride (PE‐ g ‐MA) and coupling agents such as Markosi Silane HK‐560 based on 3‐glycidoxypropyltrimethoxysilane, as well as the surface modification of HGM with silver particles and carbon nanofibers, offer alternatives to increase the compatibility between polymer matrices and HGM.…”

Section: Introductionmentioning

confidence: 99%

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Biodegradation of polyhydroxybutyrate and hollow glass microspheres composite films

Araque

Alves

Barbosa

2018

J of Applied Polymer Sci

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Biodegradable polymers represent an alternative to the conventional ones. The polyhydroxybutyrate (PHB) is one of the most used biodegradable polymers. However, PHB presents narrow processing window, which limits its applicability. The development of PHB composites offers a solution for that drawback. In this work, PHB and hollow glass microspheres (HGMs) composite films are developed. Subsequently, the films are characterized, and the biodegradability of the films is determined by the Sturm test. A suitable distribution and intermediate dispersion of the filler throughout the matrix are observed, while adhesion between the components is not achieved. The HGM does not significantly affect the thermal properties of the systems, however, decreases the degree of crystallinity. In addition, the composite films present small values of elongation and tensile strength than the pure PHB film. Finally, the HGM modified the mechanism of biodegradation; however, there was no change in the rate of biodegradation. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47195.

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Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biodegradation of polyhydroxybutyrate and hollow glass microspheres composite films

Araque

Alves

Barbosa

2018

J of Applied Polymer Sci

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“…Owing to the low thermal conductivity of HGMs, the heat conduction path in HGM-filled composites is longer, the heat blocking is greater, and the heat insulation performance is better. Generally speaking, heat transport in HGM-filled EP LWTI composite materials includes three main methods [7,26], as shown in Figure 5: (l) gaseous convection within the HGMs; (2) thermal radiation on the surface of the HGMs; and (3) solid and gaseous conduction. 3.4.1.…”

Section: The Gaseous Convection Within the Hgmsmentioning

confidence: 99%

“…There are different methods to achieve the purpose above, but use of thermal insulation materials outside of oil pipelines is one of the most convenient. Thus, the design and development of thermally insulated materials is very important for the field of marine engineering [6,7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Thermal Conductivity of Resin-Based Lightweight Composites Filled with Hollow Glass Microspheres

Zhang

Wang

et al. 2020

Polymers

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The design and development of thermal insulation materials is very important for the treatment of offshore oil pipelines. Understanding thermal energy transport in thermal insulation materials and predicting their thermal conductivities have important theoretical and practical value for the design of thermal insulation materials. In this work, lightweight and thermally insulated (LWTI) composites with the desired mechanical strength for offshore oil pipelines applications were prepared using epoxy resin (EP) as the matrix and hollow glass microspheres (HGMs) as the filler. The morphology, density, and mechanical properties of HGM/EP LWTI composites were studied first. The flexural strength and the flexural modulus of HGM/EP LWTI composites could still be as high as 22.34 ± 2.75 Mpa and 1.34 ± 0.03 GPa, respectively, while the density was only 0.591 g/cm3. The relationship between the effective thermal conductivity of HGM/EP LWTI composites and material parameters (sizes and contents together) has been studied systematically. A three-phase prediction model was built using the self-consistent approximation method to predict the effective thermal conductivity of HGM/EP LWTI composites, and the resin matrix, the wall thickness, the HGM particle size, and other parameters (such as air) were fully considered during the derivation of this three-phase thermal conductivity model. Finally, the insulation mechanism of HGM/EP LWTI composites was systematically analyzed. The thermal conductivities of HGM/EP LWTI composites with different diameters and HGM contents calculated by the three-phase prediction model agreed well with the experimental test results, with a minimum error of only 0.69%. Thus, this three-phase thermal conductivity model can be used to theoretically simulate the thermal conductivity of epoxy resin-based LWTI composites and can be the theoretical basis for the design and prediction of the thermal conductivity of other similar hollow spheres filled materials.

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Thermophysical properties of hybrid silica phenolic ablative composite: Theoretical and experimental analysis

Panigrahi

Sasikumar

et al. 2022

Polymer Composites

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Silica phenolic ablative composites are used in many high‐temperature applications like rocket/missile solid motor nozzles, space re‐entry vehicles, and so forth. As ablative composite with lower thermal conductivity and density can save considerable cost, a hybrid silica phenolic ablative composite was developed by establishing a novel processing methodology using chopped silica fiber, phenolic resin, and hollow glass microsphere. The thermophysical properties of the developed hybrid composite are analyzed and established the scientific know‐how. The developed composites, with 36% lower density, displayed 50% lower thermal conductivity and 50% lower thermal diffusivity than standard silica phenolic composite. Since a proper thermal conductivity model for a three‐component composite with matrix, fiber, and hollow glass microsphere is not available, the most suitable model for the developed composite is established.

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Low thermal and high electrical conductivity in hollow glass microspheres covered with carbon nanofiber–polymer composites

Cited by 54 publications

References 52 publications

Biodegradation of polyhydroxybutyrate and hollow glass microspheres composite films

Biodegradation of polyhydroxybutyrate and hollow glass microspheres composite films

Investigation of the Thermal Conductivity of Resin-Based Lightweight Composites Filled with Hollow Glass Microspheres

Thermophysical properties of hybrid silica phenolic ablative composite: Theoretical and experimental analysis

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