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Silicon based polymer systems applications

There are several factors which have influence on the mist formation. One can think of the diameter and setting of the rollers of the application system, the type of the rollers, etc. However, the most important factors are the speed of the machine and hence the speed of the rollers and the viscosity of the silicone-based polymer. [Pg.706]

Silicones find practical application in different membrane unit operations for treating gaseous and liquid mixtures. This is due to their solubility controlled transport, which allows the selective separation of organics from air or from water. Polymer blending, polymer grafting, addition of different solid fillers or ionic Hquids, are the most effective strategies for improving the stabihty as well as the selective transport of silicones. The industrial applications of silicone-based membrane systems present environmental benefits such as reduced waste and recovered/recycled valuable raw materials that are currently lost to fuel or to the flares. [Pg.318]

The protection of microelectronics from the effects of humidity and corrosive environments presents especially demanding requirements on protective coatings and encapsulants. Silicone polymers, epoxies, and imide resins are among the materials that have been used for the encapsulation of microelectronics. The physiological environment to which implanted medical electronic devices are exposed poses an especially challenging protection problem. In this volume, Troyk et al. outline the demands placed on such systems in medical applications, and discuss the properties of a variety of silicone-based encapsulants. [Pg.13]

In this book I have confined discussion to those polymeric materials which are cured by chemical reaction and which have found widespread application in the construction industry. As such, the book covers materials based on epoxies, polyurethanes, silicones, polysulphides, alkyds and polyesters. In addition, there is a chapter on hybrid polymer systems and one on acrylics. It is true that acrylic emulsions are not strictly thermosetting polymer systems, but their widespread use and importance made their exclusion difficult. These materials find use as coatings, sealants, adhesives, grouts, flooring compounds, repair compounds and waterproofing agents. [Pg.3]

The state-of-the-art silicone systems used in label stock application are normally solventless and thermal curing. Base polymers for these systems are vinyl-functionalized polydimethylsiloxanes having viscosities of around 200 - 600 mPa.s. Cross-linkers normally are hydride-functionalized polydimethylsiloxanes with a viscosity of around 25 mPa.s. These two components are cross-linked by a platinum catalyst, which can be the Karstedt catalyst. Additionally an inhibitor is added to the silicone mixture to prevent curing before it is applied on the substrate. These inhibitors ate... [Pg.704]

Summary Two-component room temperature-vulcanizing, condensation-curing systems (RTV-2) are well known in silicone chemistry. Even silicone-based materials caimot fulfill all requirements in diverse applications. It is therefore desirable to combine the curing properties of silicone-based systems with those of other polymer backbones. The use of isocyanatomethyl-dimethylmonomethoxysilane allows the straightforward derivatization of, e.g., hydroxyl-terminated polymers, which yield mono-silanol-terminated polymers upon hydrolysis. [Pg.765]

The conventional bilayer resist systems in which the top imaging layer (typically organosilicon polymer) also serves as an etch mask was first proposed by Hatzakis et al. in 1981, ostensibly for electron-beam lithography. Since then, a number of organosilicon resists for bilayer resist systems have been reported for use in near-UV, DUV, mid-UV, electron-beam, and x-ray applications, a good review of which has been provided by Ohnishi et al. In recent times, negative-tone resist systems and processes based on silicon-backbone polymers such as polysilanes,polysilynes, and plasma-deposited polymers have been developed for 193-nm lithography. [Pg.796]

UV-curing adhesives are available in a number of chemical systems, most of which are polymer based. These systems include acrylics and acrylates, epoxies, polyurethanes, polyesters, silicones, and vinyl and vinyl esters. The most common UV-curable adhesive is the acrylics. Specially modified acrylic and epoxy adhesives can be cured rapidly by UV radiation. In the case of epoxy adhesives, the adhesives can be pre-irradiated after application to the substrate before closing the bond line. These adhesive systems are offered by most major suppliers. ... [Pg.124]

Min K, Tanaka S, Esashi M (2003) Silicon-based micro-poljnner electrolyte fuel cells. In IEEE intemational conference on micro electro mechanical systems, Kyoto Min K, Tanaka S, Esashi M (2006) Fabrication of novel MEMS-based polymer electrolyte fuel cell architectures with catalytic electrodes supported on porous Si02- J Micromech Microeng 16 505-511 Miu M, Danila M, Ignat T, Craciunoiu F, Kleps I, Simion M, Bragam A, Dinescu A (2009) Metallic-semiconductor nanosystem assembly for miniaturized fuel cell applications. Superlatt Microstmct 46 291-296... [Pg.497]

Composite materials employed in outdoor insulating systems are usually compositions of one base polymer and a number of additives, known as fillers. Fillers aim to formulate the composition properties according to the application requirements starting, of course, from the properties of the base polymer. Consequently, for the development of a composite material, both the base polymer and the fillers included have a critical role to play. Further, depending on the anticipated service conditions, an optimum formulation (type and amount of the base polymer and filler) can be determined. In the case of RTV SIR coatings silicone rubber, and especially polythimethylsiloxane, is the base polymer implemented. [Pg.6]

Polydimethylsiloxane is the base polymer for silicone formulations employed in outdoor high voltage systems, not only in the case of coatings but also for composite insulators [3, 9-11]. It is a widely applied polymer within the silicone family [42], with remarkable and sometimes unique properties, which enable applications not only in outdoor installations but also in many technical fields [42-47]. The polymer chain is composed of silicone oxygen bonds, accompanied by two side methyl groups connected to the siHcone atom, as shown in Figure 1.4, where the monomer unit is illustrated. [Pg.6]


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See also in sourсe #XX -- [ Pg.171 ]

See also in sourсe #XX -- [ Pg.171 ]




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Applications silicone

Applications system

Polymer silicone-based

Polymer-based systems

SILICON-BASED APPLICATIONS

Silicon applications

Silicon based polymer systems

Silicon polymers applications

Silicon-based

Silicon-based polymer

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