Silicone plastic

Silicone plastics Group of plastics whose resins consist of a main... 

These materials are reviewed elsewhere in this book except RTV. The RTV (room temperature vulcanization) silicone plastic is a very popular type. It solidifies by vulcanization or curing at room temperature by chemical reaction, made up of two-part components of silicones and other elas-tomers/rubbers. RTV are used to withstand temperatures as high as 290° C (550°F) and as low as —160° C (—250°F) without losing their strength. Their rapid curing makes them... 

Silicone plastics Group of plastics whose resins consist of a main polymer chain with alternating silicone and oxygen atoms and with carbon-containing side groups. 

At high shaft speeds and negligible Ap values labyrinth seals can be utilized, whose narrow openings build up a high dynamic pressure [109]. Lip seals are practicable at Ap values < 1 bar, particularly for laboratory devices. They are made of rubber or silicone plastics and often have to be cooled. Generally slip properties have to be maintained with a liquid (usually silicone oil). 

USE Friedel-Crafts catalyst- Component of Ziegler-type catalysis in the condensation of ethylene. Starting material in the synthesis of a number of organic derivs of zirconium, such as alkoxides and zircocene. The alkoxides have been shown to be of value in the curing of silicone plastic films. The alkoxyzirconium carboxylates are said to be useful in the water-repellent treatment of textiles and other fibrous materials. Review Blumenthal, J. Chem. Ed. 39, 604-610 (1962). 

In other cases (e.g. thermal processing of glass, silicon, plastics, or porous materials), the load may not be opaque, and the temperature distribution within it develops in response to... 

Electroformed Spray metal Dipped metal Silicone Plastic Elastomer... 

British chemist Frederick Kipping (1863-1949) discovers silicone plastics. 

Cured silicone rubber contains a low molecular weight polysiloxanes as plasticizers. These may have ditfeient names as for example the first four materials on the above Ust but similar properties of the non-reactive, low viscosity liquids, tiscosity of some silicone plasticizers is as low as 10-30 cps (or mPas). 

Polymers are organic compounds. For this reason, these extensively manufactured, processed and used plastics are usually combustible. Even the silicon plastics are not exceptions since their inorganic polymeric chains of repeated -Si-O-units comprise organic side groups, designated and R2 ... 

Silicone plastics Styrene acrylonitrile copolymer St ene-butadiene rubber Styrene butadiene styrene block copolymer Sheet molding compound St50 ene acrylonitrile copolymer Styrene butadiene block copolymer Styrene butadiene styrene block copolymer -a thermoplastic elastomer... 

Silicone plastics n. Plastics based on silicone resins. 

Fig. 18-2. Pulse generator for electrical timing of the human heart employs silicone plastics.

It is technically possible to produce very strong bonding between silicone rubber and another material. However, the silicone-plastic, silicone-metal or silicone composite obtained usually... 

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