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Properties of silicones

Linear volatile and nonvolatile fluids, e.g., Dimethicone polymer chains of difunctional units (monomer) (D) terminated with monofunctional (M) units ma/wwwwv [Pg.365]

Cyclic ring polymer, volatile fluids, e.g., Cyclomethicone 0 [Pg.365]

Branched present in resins, adhesives, e.g., silicone rubbers Soft Skin Adhesives DC 7-9800 part A, DC 7-9800 part B due to the presence of the ends in branches as well as additional side-chain bonds there is possibility of the additional connecting with other polymers branched polysiloxanes are often used as crosslinkers or curing agents ma1a/ wXv,  [Pg.365]

Crosslinked I networks present in resins, rubbers, elastomers Resins - rigid solids based on trifunctional (T) and tetrafunctional (Q) units. Surface modification with (M) units Rubbers - same structure as fluids, but much higher molecular weight (viscosities 1,000,000 cSt) Elastomers - soft solids based on crosslinked Si-H fluids. /wsA/vywvA/yv JW AAiyvwvAA. [Pg.365]

Crosslinked II networks present in resins easily transformed into a three-dimensional network s [Pg.365]


Methfessel M, Rodriguez C O and Andersen O K 1989 Fast full-potential calculations with a converged basis of atom-centered linear muffIn-tIn orbitals structural and dynamic properties of silicon Phys. Rev. B 40 2009-12... [Pg.2232]

Fig. 8. Optical properties of silicon (a) transmissivity vs wavelength, (b) shortwavelength absorption coefficient where the transmissivity increases sharply... Fig. 8. Optical properties of silicon (a) transmissivity vs wavelength, (b) shortwavelength absorption coefficient where the transmissivity increases sharply...
Properties of Silicon EMIS Datareview Series No. 4, Inspec, London, 1988. [Pg.534]

Table 3. Physical Properties of Silicon Tetrachloride and Trichlorosilane ... Table 3. Physical Properties of Silicon Tetrachloride and Trichlorosilane ...
Table 10. Physical and Flammability Properties of Silicone Foam Rubber ... Table 10. Physical and Flammability Properties of Silicone Foam Rubber ...
Table 19. Conductivity and H04 (Hard) Temper Tensile Properties of Silicon Bronze Alloys... Table 19. Conductivity and H04 (Hard) Temper Tensile Properties of Silicon Bronze Alloys...
Table 13. Properties of Silicon Bronze and Silicon Brass Alloys... Table 13. Properties of Silicon Bronze and Silicon Brass Alloys...
The foregoing facts of relevance to the preparation and properties of silicone polymers may be summarised as follows... [Pg.817]

The surface of the substrate, the silicone/substrate interface, and the bulk properties of silicones all play significant and influential roles that affect practical adhesion and performance of the silicone. The design of silicone adhesives, sealants, coatings, encapsulants or any products where adhesion property is needed requires the development chemist to have a thorough understanding of both silicone chemistry and adhesion phenomena. [Pg.678]

Previous reviews on silicones in relation to adhesion have dealt with specific technologies such as adhesives, sealants, and coupling agents [12-17]. This review attempts to address the fundamental properties of silicones and to relate them to various aspects of adhesion technologies. The perspective taken in this review is from the point of view of a newcomer in the field of adhesion and silicones. [Pg.678]

This chapter first reviews the general structures and properties of silicone polymers. It goes on to describe the crosslinking chemistry and the properties of the crosslinked networks. The promotion of both adhesive and cohesive strength is then discussed. The build up of adhesion and the loss of adhesive strength are explained in the light of the fundamental theories of adhesion. The final section of the chapter illustrates the use of silicones in various adhesion applications and leads to the design of specific adhesive and sealant products. [Pg.678]

A chemical property of silicones is the possibility of building reactivity on the polymer [1,32,33]. This allows the building of cured silicone networks of controlled molecular architectures with specific adhesion properties while maintaining the inherent physical properties of the PDMS chains. The combination of the unique bulk characteristics of the silicone networks, the surface properties of the PDMS segments, and the specificity and controllability of the reactive groups, produces unique materials useful as adhesives, protective encapsulants, coatings and sealants. [Pg.681]

Budden, G., High temperature properties of silicone elastomers. J. Coated Fabr., 27, 294-308 (1998). [Pg.707]

Table 3.57 Mechanical properties of silicon-iron alloys ... Table 3.57 Mechanical properties of silicon-iron alloys ...
Two other important properties of silicon-carbon bonds are that carbonium ions fl and carbanions (or metalloid equivalents) a to silicon are favoured over alternatives, i.e. that situations involving Si—C—C+ and Si—C are thermodynamically relatively good. [Pg.96]

The electronic properties of silicon and other semiconductor materials are shown in Table 13.2. [Pg.352]

Gallium arsenide is epitaxially deposited on a silicon substrate and the resulting composite combines the mechanical and thermal properties of silicon with the photonic capabilities and fast electronics of gallium arsenide. [Pg.357]


See other pages where Properties of silicones is mentioned: [Pg.2214]    [Pg.262]    [Pg.319]    [Pg.322]    [Pg.529]    [Pg.17]    [Pg.17]    [Pg.54]    [Pg.463]    [Pg.821]    [Pg.821]    [Pg.925]    [Pg.185]    [Pg.269]    [Pg.379]    [Pg.506]    [Pg.680]    [Pg.681]    [Pg.688]    [Pg.691]    [Pg.692]    [Pg.699]    [Pg.699]    [Pg.700]    [Pg.702]    [Pg.704]    [Pg.704]    [Pg.705]    [Pg.331]    [Pg.219]    [Pg.220]    [Pg.281]    [Pg.302]   
See also in sourсe #XX -- [ Pg.364 ]




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Silicones properties

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