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Low Pressure RF Capacitively Coupled Plasma Reactor for .

Low Pressure RF Capacitively Coupled Plasma Reactor for .

Plasma reactor operating at low pressures (0.2-1 Torr) at 13.56 MHz has been developed with an idea to optimize the treatment of polymers, biological and textile materials. The reactor proved very effective in treatment of polymer .

Modeling a Tubular Reactor for Optimized Polymer .

Modeling a Tubular Reactor for Optimized Polymer .

Jul 04, 2018 · Multijet tubular reactors are used to manufacture polymers such as polyester. The turbulent flow that occurs in this type of reactor can affect the manufacturing process, including the .

PLASMA REACTORS FOR POLYMER MATERIALS CHEMICAL .

PLASMA REACTORS FOR POLYMER MATERIALS CHEMICAL .

3 Plasma reactors for polymer materials 1073 Because of their great diversity, a systematization of the installations for plasma processing utilized in polymer chemistry is difficult to realize. Taking into account the position of the two electrodes, they are placed outside or within the reactor. The systems in the first category are utilized

Converting a Microwave Oven into a Plasma Reactor: A Review

Converting a Microwave Oven into a Plasma Reactor: A Review

This paper reviews the use of domestic microwave ovens as plasma reactors for applications ranging from surface cleaning to pyrolysis and chemical synthesis. This review traces the developments from initial reports in the 1980s to today’s converted ovens that are used in proof-of-principle manufacture of carbon nanostructures and batch cleaning of ion implant ceramics. Information .

Modeling and Design of a Multi-Tubular Packed-Bed Reactor .

Modeling and Design of a Multi-Tubular Packed-Bed Reactor .

Methanol as a hydrogen carrier can be reformed with steam over Cu/ZnO/Al2O3 catalysts. In this paper a comprehensive pseudo-homogenous model of a multi-tubular packed-bed reformer has been developed to investigate the impact of operating conditions and geometric parameters on its performance. A kinetic Langmuir-Hinshelwood model of the methanol steam reforming .

Effect of reactor size on plasma polymerization of .

Effect of reactor size on plasma polymerization of .

Effects of the reactor size on the deposition characteristics and the chemical structure of deposited polymers during the plasma polymerization of perfluoropropene were investigated. A 132 cm long glass tube with a diameter of 1.8, 3.3, or 4.7 cm was chosen for a small, medium, or large reactor, respectively.

Polymerization in Multijet Tubular Reactor

Polymerization in Multijet Tubular Reactor

Polymerization in Multijet Tubular Reactor. Application ID: 3831. In a polymerization reactor for polyester manufacturing, the mixing in the reactor is achieved by impinging turbulent jets of reactants onto each other. The turbulence affects the reaction kinetics and quality of the polymer linkage.

Effect of reactor size on plasma polymerization of .

Effect of reactor size on plasma polymerization of .

Effects of the reactor size on the deposition characteristics and the chemical structure of deposited polymers during the plasma polymerization of perfluoropropene were investigated. A 132 cm long glass tube with a diameter of 1.8, 3.3, or 4.7 cm was chosen for a small, medium, or large reactor, respectively. Plasma was formed by a capacitively coupled 13.56 MHz rf power .

Effect of reactor type on polymer product: a backmix .

Effect of reactor type on polymer product: a backmix .

Jun 01, 1997 · Free Online Library: Effect of reactor type on polymer product: a backmix reactor for polymerizations and other viscous reaction media.(International Forum on Polymers - 1996) by "Polymer Engineering and Science"; Engineering and manufacturing Science and technology, general Chemical reactors .

Deposition of Organosilicon-Plasma Coating onto Fine .

Deposition of Organosilicon-Plasma Coating onto Fine .

Fine graphite micropowder was processed in a downstream tubular reactor to perform a fast and homogeneous plasma-enhanced chemical vapor deposition of an organosilicon-plasma coating onto the powder surface. As a single process run results in the deposition of a non-continuous coating, consisting of a nanoparticle distribution, on the powder surface, the powder was repeatedly reprocessed until .

Miniemulsion photopolymerization in a continuous tubular .

Miniemulsion photopolymerization in a continuous tubular .

Synthesis of polymeric nanoparticles of adjustable size in the submicron-range 200–950 nm has been conducted via membrane emulsification combined with photoinduced miniemulsion polymerization in a continuous tubular flow reactor. Monomer droplets comprising methyl methacrylate (MMA), hexadecane and the photoinitiator diphenyl(2,4,6 .

Elements of Chemical Reaction Engineering

Elements of Chemical Reaction Engineering

The tubular reactor is commonly found either in the form of one long tube or as one of a number of shorter reactors arranged in a tube bank. Most homogeneous liquid-phase flow reactors are CSTRs, whereas most homogeneous gas-phase flow reactors are tubular.

Plasma Polymerization of n-hexane in a Modular Reactor

Plasma Polymerization of n-hexane in a Modular Reactor

The most widely used types of reactors for plasma polymerization can be divided into two main groups - the parallel plate electrode reactor and the tubular reactor (more detailed description of these systems is in [1]). These reactors were used since 70. of the 20th century. It has been shown ([2], [3])

XPS Study of the Chemical Structure of Plasma .

XPS Study of the Chemical Structure of Plasma .

An XPS study about the structure of plasma biocopolymers synthesized with resistive radio frequency glow discharges and random combinations of ethylene glycol, pyrrole, and iodine, as a dopant, is .

Frontiers | Luminal Plasma Treatment for Small Diameter .

Frontiers | Luminal Plasma Treatment for Small Diameter .

May 22, 2019 · Plasma-based surface modification is recognized as an effective way to activate biomaterial surfaces, and modulate their interactions with cells, extracellular matrix proteins, and other materials. However, treatment of a luminal surface of a tubular .

Plasma Polymer Deposition | Nordson MARCH

Plasma Polymer Deposition | Nordson MARCH

Plasma polymers are quite useful as barrier layers when deposited onto other polymers. Because plasma polymers are deposited directly from the monomer there are no waste streams due to wet chemical synthesis or solvents. Plasma deposition allows for precise control of the film thickness. Nordson MARCH offers three system options for plasma .

Functionalization of polymer powders for SLS-processes .

Functionalization of polymer powders for SLS-processes .

May 22, 2015 · Recently additive manufacturing processes such as selective laser sintering (SLS) of polymers have gained more importance for industrial applications [1]. Tailor-made modification of polymers is essential in order to make these processes more efficient and to cover the industrial demands. The so far used polymer .

Plasma Enhanced Chemical Vapor Deposition (PECVD)

Plasma Enhanced Chemical Vapor Deposition (PECVD)

What is Plasma Enhanced Chemical Vapor Deposition? CVD process that uses plasma Uses cold plasma Keeps wafers at low temperatures Enhances properties of layers being

Functionalization of polymer powders for SLS-processes .

Functionalization of polymer powders for SLS-processes .

May 22, 2015 · Recently additive manufacturing processes such as selective laser sintering (SLS) of polymers have gained more importance for industrial applications [1]. Tailor-made modification of polymers is essential in order to make these processes more efficient and to cover the industrial demands. The so far used polymer materials show weak performance regarding the mechanical .

PLASMA REACTORS FOR POLYMER MATERIALS CHEMICAL .

PLASMA REACTORS FOR POLYMER MATERIALS CHEMICAL .

3 Plasma reactors for polymer materials 1073 Because of their great diversity, a systematization of the installations for plasma processing utilized in polymer chemistry is difficult to realize. Taking into account the position of the two electrodes, they are placed outside or within the reactor. The systems in the first category are utilized

Thin Films Deposited from Ar/C2H2 by Pulsed RF PECVD .

Thin Films Deposited from Ar/C2H2 by Pulsed RF PECVD .

VALTR, Miroslav, Lenka ZAJÍČKOVÁ a Siegmar RUDAKOWSKI. Thin Films Deposited from Ar/C2H2 by Pulsed RF PECVD: Deposition Profiles in Tubular Plug-Flow Reactor. In JUNIORMAT 01. 1. vyd. Brno: ÚMI VUT FSI v Brně ve spolupráci s Českou společností pro nové materiály a technologie, 2001. s. 277-278. ISBN 80-214-1885-0.

Introduction to Plasma Enhanced Atomic Layer Deposition

Introduction to Plasma Enhanced Atomic Layer Deposition

Thermal ALD Example. ALD is typically carried out in a heated reactor that is being maintained at a sub-atmospheric pressure through the application of a vacuum pump and a controlled flow of inert gas, such as nitrogen, N 2.Substrates to be coated with an ALD film are placed in the reactor and allowed to equilibrate with the reactor .

Plasma Pyrolysis of Methane to Hydrogen and Carbon Black .

Plasma Pyrolysis of Methane to Hydrogen and Carbon Black .

Feb 16, 2002 · The plasma-driven gas-phase thermal decomposition of methane yielding hydrogen and solid-phase carbon has been suggested as an environmentally friendly alternative to conventional methods of producing hydrogen from natural gas. The advantage of the process is that hydrogen is obtained directly from methane without producing CO2 as a byproduct.

Protein precipitation - Wikipedia

Protein precipitation - Wikipedia

Protein precipitation is widely used in downstream processing of biological products in order to concentrate proteins and purify them from various contaminants. For example, in the biotechnology .

Graphite-rod hollow tubular electrode of plasma reactor .

Graphite-rod hollow tubular electrode of plasma reactor .

Graphite rod, the hollow tubular electrode plasma reactor-separator consists of graphite, temperature-controlled, pivotal hollow tubular electrode 1 is cooled from the inside of the raw material is a material .

Simulation and Nonlinear Analysis of the Stagnant Polymer .

Simulation and Nonlinear Analysis of the Stagnant Polymer .

often produced in tubular reactors of several thousand meters length under high pressure. One problem that occurs during operation of these reactors is the formation of a highly viscous, polymer-rich layer at the reactor walls, the so-called reactor fouling (Mähling et al., .

Efficiency of Glow Discharge Polymerization Rization in a .

Efficiency of Glow Discharge Polymerization Rization in a .

The adhesion of the polymers which has been a major problem in the past can be improved by manipulating reaction parameters such as monomer flow rate; although the results may vary widely depending on the reactor geometry (4, 5). The reaction mechanism has perhaps been the most disputed aspect of glow discharge polymerization.

Nanoparticle Synthesis in a Tubular Plasma Reactor – From .

Nanoparticle Synthesis in a Tubular Plasma Reactor – From .

Figure 1.1: Overview of plasma-assisted surface modification processes for fine-grained powder substrates. 2 Experimental The process scheme for the nanoparticle production in the tubular plasma reactor is shown in Figure 2.1. The plasma chamber (1) consists of a 1.5 m long double wall glass reactor with an inner diameter of 40 mm.

Plasma Processes and Polymers - Wiley Online Library

Plasma Processes and Polymers - Wiley Online Library

Inside Front Cover: Low-k polymer insulating layers films are produced at atmospheric-pressure from the nanosecond pulsed plasma reaction of cyclic vinyl organosiloxanes.Variation of the monomer saturation ratio, PM/Psat, impacts the diffusion and adsorption of primary radicals and monomers from the vapour phase to the surface where the polymerisation occurs.

Plasma surface modification of polymer powders in a downer .

Plasma surface modification of polymer powders in a downer .

surface tension and interfacial tension (fluid dynamics); plasma reactions + plasma interactions (plasma physics); plasma chemistry; oberflÄchenbehandlung von werkstoffen; kunststoffe (werkstoffe); glues .