Fluorosilicone rubber

Fluorosilicones are renowned for their fuel resistance and utility in extreme-temperature service environments. The siloxane backbone results in a polymer with excellent UV, ozone and thermal resistance. The maximum recommended service temperature is in excess of 200 °C (392 °F) for most grades with brittle points as low as -65 °C. Fluorosilicones are used for O rings and for wire and cable insulation. [Pg.66]

Whilst some adhesive shear strengths are given in Table 4.6 fluorosilicones can often be recommended for high-temperature applications and so if the operating temperature is 100 C, it is unlikely that cyanoacrylates could be used as suitable adhesives. [Pg.66]

Fluorosilicate glass-ceramics, 12 634-637 Fluorosilicates, 12 631 Fluorosilicone bases, 20 243 Fluorosilicone blends, 20 247 Fluorosilicone compounds, 20 243 Fluorosilicone rubber, 20 246—247 Fluorosilicones, 20 241 21 772. See also Poly(fluorosilicones)... [Pg.372]

The use of silicone elastomers for high-voltage applications (insulators and cable accessories) requires special formulations. Unusually, stringent requirements for these materials must be met.509,510 Fluorosilicone rubbers, which offer some unique combinations of properties (e.g., chemical resistance and higher temperature stability), have attracted considerable attention and have been reviewed in recent publications.511,512 It was noted that a modification of perfluoroether elastomers with silicone elastomer via hydrosilylation reaction opens the possibility of novel applications.5... [Pg.679]

AU EU CSM T FKM FC, FE, GE FK Polyesterurethanes Polyetherurethanes Chlorosulphanated polyethylene Thiokol Fluorinated rubbers-Vitons Silicone rubbers Fluorosilicone rubbers... [Pg.276]

A TG-DTA study of the thermochemical processes occurring at vulcanisation temperatures with N-oxydiethylene-2-benzthiazyl sulphenamide and N-cyclohexyl-2-benzthiazyl sulphenamide and their mixtures with sulphur showed the formation of high molecular weight polysulphides [73]. The influence of metallic oxides (Fe203, Sn02) on hot air ageing of one-pack room temperature vulcanised fluorosilicone rubber has been studied by means of TG-DTA [74, 75]. TG-DTA and TG were both applied to study the thermal characteristics of room temperature vulcanised silicone rubber [76]. [Pg.32]

Silicone 600 Excellent heat resistance. Fair water resistance poor resistance to steam at high pressures. Fair to good acid, alkali resistance. Poor (except fluorosilicone rubber) resistance to oils, solvents. [Pg.2229]

Diffusilivities of SO2 in a fluorosilicone rubber tube are measured at several temperatures, with the following results ... [Pg.41]

Ethylene-vinyl acetate rubbers (EAM)—this chapter Ethylene-acrylate rubbers (AEM)—this chapter Fluorombbers (FKM, CFM, FFKM, FZ, AFMU ete.)—Chapter 13 Silicone and fluorosilicone rubbers (MQ, VMQ, PMQ, PVMQ and FVMQ)— Chapter 29... [Pg.309]

Silicone and fluorosilicone rubbers display excellent resistance to sun, weathering, and ozone. Their properties are virtually unaffected by longterm exposure. [Pg.520]

The fluorosilicone rubbers have better chemical resistance than the silicone rubbers. They have excellent resistance to aliphatic hydrocarbons and good resistance to aromatic hydrocarbons, oil and gasoline, animal and vegetable oils, dilute acids and alkalies, and alcohols and fair resistance to concentrated alkalies. [Pg.520]

When silicone or fluorosilicone rubbers are infused with a high-density conductive filler, an electric path is created. These conductive elastomers are used as part of anEMI/RFI/EMP shielding process in forms such as O-rings and gaskets to provide... [Pg.524]

Non-polar polymers can dissolve in polar solvents if their molecnles have groups capable of polar interaction. For example, fluorosilicone rubbers dissolve in acetone and ethyl acetate. [Pg.126]

Silicone rubber having fluorine, vinyl, and methyl substitute groups on the polymer chain Fluorosilicone rubber FVMQ... [Pg.215]

Over the years many fluoroelastomers have been prepared in addition to the materials described earlier in this chapter. These include fluorinated polyurethanes, fluorinated polyepoxides, hexafluoro-acetone/propylene oxide copolymers and polyfluorals. Many of these materials are thermally unstable, a fact which stresses the point that the presence of C—F bonds with their high bond strength is no guarantee of polymer thermal stability. One particular type of fluoroelastomer which is of technical importance, the fluorosilicone rubber family, are however of good thermal stability and are considered together with the silicone rubbers in a later chapter. [Pg.366]

TABLE 2.3 PLUOROSILICONE RUBBERS-DOW CORNING (continued) Fluid resistance op silastic ls-231iu fluorosilicone rubber-... [Pg.288]

Obtained by adding 1.0 pbr Varox to SILASTIC LS 70 fluorosilicone rubber Slabs 0.075 inch thick were press cured 10 mirt i7l C (340 F) and post cured 4 hrs/200 C (392 F) prior to testing. [Pg.1004]

FLUID RESISTANCE OF SILASTIC L. 2249U FLUOROSILICONE RUBBER ... [Pg.1004]

FMQ (fluorosilicone rubber with methyl and fluorine groups on the backbone) FVMQ (fluorovinylmethyl silicone rubber)... [Pg.112]

Fluorosdicones contain polar trifluoropropyl side groups. The advantage of fluorosilicone rubbers is their excellent resistance to both oils and fuels. Moreover,... [Pg.164]

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