Fig 2 - uploaded by Zoltán Weltsch
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Silicone chemical construction and curing (on the basis of http://www.silicones-science.com/chemistry/ chemical-reactions-on-the-finished-silicone)
Source publication
Tight and faultless sealing is very important, when joining different internal-combustion engine parts (cylinder head - cylinder block - crankcase - oil sump). For this purpose, silicones are widely used. However, the curing process of silicones varies in a wide range - according to assembly line experiments. Environmental conditions as well as the...
Contexts in source publication
Context 1
... is an inorganic polymer, built up from a silicone- oxygen (siloxane) chain with attached methyl-and other reac- tive groups (marked with X on Fig. 2.). The curing process of one-component silicones -used for sealing in vehicle industry - is called Room Temperature Vulcanization (RTV-1), which is a polycondensation process. During this process the silicone take up H 2 O (water), from which the H-atoms bond to two reactive groups which release, while the oxygen atom establish a new ...
Context 2
... curing process of one-component silicones -used for sealing in vehicle industry - is called Room Temperature Vulcanization (RTV-1), which is a polycondensation process. During this process the silicone take up H 2 O (water), from which the H-atoms bond to two reactive groups which release, while the oxygen atom establish a new binding between two Si-O chains (see Fig.2.) On the whole, the curing is initiated by the humidity of air atmosphere, starts on the surface and move toward the bulk material, and a by-product release. ...
Citations
... To make the ribbons particularly useful in electric motors, isolation of each coil is extremely important. The best solution for this is the isolation with direct coating of the surfaces [2]. It is important to have good wetting properties in favor of good adhesion conditions between the coating and the ribbon. ...
