The Science behind Si-COAT RTV Silicone High Voltage Insulator Coating

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Tested in the Lab and in the Field

 

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With its introduction to the market nearly 20 years ago, Si-COAT was the first to offer the user a number of previously unavailable benefits.

The greatest of these benefits was Si-COAT’s superior adhesion to the insulator surface. Thus, in the extreme case where infrequent water washing was still required to keep the coating performing optimally, Si-COAT would not come away from the insulator. This was not the case with Si-COAT’s leading competitor.

But since those early days the competition has learned, and outstanding adhesion of room temperature vulcanizing (RTV) coatings to insulators remains an innovation and benefit first brought to the market by Si-COAT.

Perhaps less obvious but more significant an advantage, Si-COAT offered the user superior electrical characteristics. Such performance yielded enhanced hydrophobicity, quicker hydrophobic recovery after water immersion (such as after heavy rainfall) and far greater leakage current suppression than could be found in the competitor’s product. These superior attributes were achieved through the identification and patenting of the optimum particle size of a key ingredient called alumina trihydrate (ATH).

The attributes of Si-COAT are based on two decades of R&D by CSL Silicones Inc. in the field of RTV technology. Besides its patented formulation, Si-COAT RTV derives its characteristics from a proprietary process of manufacturing the silicone polymer. All engineering behind Si-COAT was undertaken independently and done ‘in-house’.

Even as the competition introduces PLUS or Next Generation versions of their RTV coatings, they still cannot match the superior performance of Si-COAT. The reason for this lies in the patented discovery and the finely tuned manufacturing processes behind Si-COAT.

 

 

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