Modification of epoxy resin using graphene

Al-Shiblawi, K.A.; Першин, В. Ф.; Jarcev, V. P.; Pasko, T. V.

doi:10.1063/1.5079346

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…We conducted experimental studies on the installation, which is shown in figure 1. The main unit is a rotary apparatus with movable blades, similar to the one that we used earlier [8]. In contrast to this design, this stator was equipped with upper and lower covers.…”

Section: Methodsmentioning

confidence: 99%

Kinetics of liquid-phase shear exfoliation of graphite in synthetic oils

2020

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Lubricants modified with nanosized particles are of great interest to science and industry, since they have much better tribological characteristics compared to traditional lubricants. One of the most promising nanoparticles is graphene, which has an extremely low coefficient of friction, is very wear-resistant and environmentally friendly. Today, the main problem for the development of a new nano-lubricant is the creation of an environmentally friendly and cheap technology for the industrial production of graphene suspensions or graphene concentrates for the modification of traditional lubricants. The article describes the process of liquid-phase shear exfoliation of graphite in a rotary apparatus with moving blades, in synthetic oils. The kinetic dependences of the exfoliation process, i.e. the dependence of the concentration of graphene nanostructures in suspension over time at different values of the process parameters. It has been experimentally proved that using a stator-rotor mixer with moving blades, it is possible to obtain graphene nanostructure concentrations of at least 2 mg / ml.

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Section: Methodsmentioning

confidence: 99%

Kinetics of liquid-phase shear exfoliation of graphite in synthetic oils

2020

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“…For example, in the production of concrete, graphene structures are introduced in the form of an aqueous suspension [1]. A similar situation arises when modifying epoxy resin [2] or lubricants with graphene nanostructures [3][4][5]. Sometimes the mixing process directly determines the quality of the finished product.…”

Section: Introductionmentioning

confidence: 99%

Continuous production of multicomponent powder mixtures

2020

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Mixing of powders is an important process in various industries, from chemical, pharmaceutical to food and construction. The main characteristic of the mixture is its homogeneity, which is usually estimated by the coefficient variation and the lower this ratio, the better the mixture. Typically, particles of the components of the mixture differ in size and / or density. These differences cause segregation, i.e. the formation of zones in which there is a high concentration of one of the components and this affects the quality of the mixture. However, through the use of special technological methods, the negative result of segregation can be transformed into a positive one and not only reduce the mixing time, but also improve the quality of the mixture. This article discusses one of the options for the production of a multicomponent mixture with a specific schedule for loading components. It is shown that by organizing the correct sequence of loading components, you can control the mixing process. Two-step technology is used to feed components into the mixer.

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“…GNPs are successfully produced in rod drum mills [11,12] and rotary apparatuses (stator-rotor mixer) [13,14].…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly technology for the modification of lubricants with graphene nanostructures

2020

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Nanomaterials, and in particular graphene, significantly increase the basic tribological characteristics of lubricants. One of the most effective ways to quickly use laboratory results on an industrial scale is to modify traditional lubricants with graphene concentrates. The research results showed that in order to solve this problem successfully, it is necessary to create graphene concentrate and distribute it evenly over the total volume of the lubricant. It is necessary that the concentrate be prepared on the same basis as the lubricant. In the present work, previous studies on the mechanical activation and exfoliation of graphite in a core drum mill, liquid-phase shear exfoliation in a rotary apparatus with moving blades, and the homogenization of graphene nanostructures in lubricants using a rotary mixer are combined. Changes were made to the design of the main components, taking into account the use of this technology in the industry. The presented technology is environmentally friendly, since only oil and graphite are used and there are no harmful wastes that must be disposed of.

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Modification of epoxy resin using graphene

Cited by 10 publications

References 12 publications

Kinetics of liquid-phase shear exfoliation of graphite in synthetic oils

Kinetics of liquid-phase shear exfoliation of graphite in synthetic oils

Continuous production of multicomponent powder mixtures

Environmentally friendly technology for the modification of lubricants with graphene nanostructures

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