Electrical and mechanical properties of melamine-formaldehyde-based laminates with shungite filler

Voigt, Björn; McQueen, David M.; Pelíšková, Michaela; Rozhkova, N. N.

doi:10.1002/pc.20113

Cited by 13 publications

(8 citation statements)

References 26 publications

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“…As described in reference articles, curing reaction of MF resin could be catalyzed by acidic medium, thus the acidic fillers could catalyze the condensation reaction of the MF matrix. 22 Compared with NaMMT, the acidity of C18MMT and HMMT increased to a certain extent after the sodium ion of the interlayer was exchanged with alkylammonium and proton respectively, as the pH values of the 5 wt% aqueous dispersion of NaMMT, C18MMT and HMMT were 8.450, 5.016, and 2.430 respectively. Accordingly, the condensation reaction of MF/HMMT4 and MF/C18MMT4 could be catalyzed by HMMT and C18MMT.…”

Section: Influence Of Clay On the Cure Of Prepolymersmentioning

confidence: 98%

“…The formation reaction of MF resin was illustrated in Figure 1. 18 19 For conventional MF composites, common fillers are natural fibers such as cellulose, 20 21 mineral fillers such as Shungite, 22 chrysotile asbestos, anthophyllite asbestos, mica etc. 19 Since the intermediate of MF resin is highly hydrophilic, the preparation of MF/MMT nanocomposites by the in-situ intercalative polymerization of pristine MMT is possible.…”

Section: Introductionmentioning

confidence: 99%

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A Numerical Algorithm for Magnetohydrodynamics of Ablated Materials

Lü¹,

Samulyak²

2008

j nanosci nanotechnol

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A numerical algorithm for the simulation of magnetohydrodynamics in partially ionized ablated material is described. For the hydro part, the hyperbolic conservation laws with electromagnetic terms is solved using techniques developed for free surface flows; for the electromagnetic part, the electrostatic approximation is applied and an elliptic equation for electric potential is solved. The algorithm has been implemented in the frame of front tracking, which explicitly tracks geometrically complex evolving interfaces. An elliptic solver based on the embedded boundary method were implemented for both two- and three-dimensional simulations. A surface model on the interface between the solid target and the ablated vapor has also been developed as well as a numerical model for the equation of state which accounts for atomic processes in the ablated material. The code has been applied to simulations of the pellet ablation in a magnetically confined plasma and the laser-ablated plasma plume expansion in magnetic fields.

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Section: Influence Of Clay On the Cure Of Prepolymersmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

A Numerical Algorithm for Magnetohydrodynamics of Ablated Materials

Lü¹,

Samulyak²

2008

j nanosci nanotechnol

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“…Unfortunately, there are no publications presenting a cross-section of composites filled with graphite or shungite. The only fractographs were included in the work of Voigt et al [47] where the melamine-formaldehyde-based laminates with an addition of 3 wt.% of shungite were analyzed. The characteristics of the polymeric matrix used in this study, as well as the quality of the image, preclude a viable comparison of the obtained results.…”

Section: S Sg1 Sg3 Sg5mentioning

confidence: 99%

Comparison of How Graphite and Shungite Affect Thermal, Mechanical, and Dielectric Properties of Dielectric Elastomer-Based Composites

et al. 2021

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The aim of this work involved comparing the effect graphite and shungite have on the properties of dielectric elastomer-based materials. For this reason, dielectric elastomer–Sylgard (S) was filled with 1, 3, 5, 10, and 15 wt.% of graphite (G) and shungite (Sh). The structure of the obtained materials was studied by means of scanning electron microscopy and atomic force microscopy. The influence of the introduced additives on the thermal stability of the obtained composites was evaluated using thermogravimetry. Moreover, the mechanical properties and the dielectric constant of the elastomer with an addition of graphite and shungite were determined. Obtained results allowed us to establish that the presence of graphite as well as shungite significantly influences mechanical as well as dielectric properties. Additionally, the optimum mass of additives, allowing to increase the dielectric constant without the significant decrease of strain at break, was indicated. In the case of materials containing graphite, regardless of the filler content (1–15 wt.%), the mechanical as well as the dielectric properties are improved, while in the case of composites with an addition of shungite exceeding the 5 wt.% of filler content, a reduced tensile strength was observed.

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“…Nanosilica-based melamine formaldehyde/nano zeolite composites obtain from rice husk are prepared and their adsorption capacity has been determined [33]. The electrical and mechanical properties of shungite reinforced melamine formaldehyde-based laminates have been investigated [34].…”

Section: Introductionmentioning

confidence: 99%

Production of Melamine Formaldehyde Based Composites and Investigation of Usage Areas

Demirpolat

Aydoğmuş

2023

ICRAS

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Melamine formaldehyde-based composites have been preferred in many sectors. Various reinforcing materials are used to improve the physical and chemical properties of these composites. To lighten melamine formaldehyde-based composites, low-density organic and inorganic industrial wastes are reinforced. Inorganic factory wastes are used to increase the hardness of the composites. Besides, mineral fillers are preferred to improve the thermophysical properties of composites. In industrial applications, many modification processes have been carried out to develop both the physical and chemical properties of such composites. For composites, importance is given to optimum mechanical strength, nonflammability, surface morphology, pore structure, and distribution. Depending on the intended use of composites, the desired properties may differ in each sector. For example, there are prominent standards in every sector such as home appliances, furniture, automotive, construction, electronics, and decoration. In these standards, it is desirable to have optimum properties such as mechanical strength, hardness, density, thermal conductivity, non-flammability, and thermal stability. Therefore, these standards can be achieved by applying appropriate reinforcements and modification processes to improve the properties of melamine formaldehyde-based composites.

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Electrical and mechanical properties of melamine-formaldehyde-based laminates with shungite filler

Cited by 13 publications

References 26 publications

A Numerical Algorithm for Magnetohydrodynamics of Ablated Materials

A Numerical Algorithm for Magnetohydrodynamics of Ablated Materials

Comparison of How Graphite and Shungite Affect Thermal, Mechanical, and Dielectric Properties of Dielectric Elastomer-Based Composites

Production of Melamine Formaldehyde Based Composites and Investigation of Usage Areas

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