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Electrically Insulating Materials
Safer, stronger energy transmission
High-voltage infrastructure undergoes a lot of stress. This equipment is not only asked to support the power grid, but also stand up to environmental contaminants, physical demands and vandalism. Whether you’re looking to increase the service life of your high-voltage insulators and distribution materials or swap out your mineral transformer oils for a safer option, silicone technologies from Dow can help.
Why silicones?
Due to their hydrophobic nature, silicones resist water longer than other materials and reduce leakage currents. Silicones are easy to install, reduce total system costs and minimize equipment problems and failures. Additional benefits include:
SILASTIC™ HV 1551-55P Liquid Silicone Rubber
A high-voltage-grade LSR that delivers excellent tracking resistance and high elongation for use in insulators, arrestors and cable accessories.
SILASTIC™ 590 EU Liquid Silicone Rubber
A fabric-coating grade LSR for electrical wire sleeving; it provides good flame resistance, is easily pigmentable and delivers unprimed adhesion to glass fabrics.
Showcasing Eco-Innovation with fluorosilicone hybrid coatings
This case study shows you how we are bringing our sustainability value to life by using our eco-innovation model and principles to help conserve precious natural resources; rescue waste and increase use of renewable energy materials.
Dow Electronics Protection & Assembly Academy – Lab Series, Inhibition
This video describes how to test for material compatibility and cure inhibition with addition cure silicone products like adhesives, conformal coatings, encapsulants, foams and gels.
What are inhibitors for platinum-catalyzed addition-cure silicones?
- Amines and amides: – Neutralizing amines – Ethanolamine
- N-methylethanolamine, triethanolamine
- N,N-dimethyl ethanolamine, n-butylamine, diethylamine – Triethylamine, tetramethylenediamine, cyclohexylamine
- Melamine – Dimethylformamide
- Nitriles, cyanates, oximo, nitroso, hydrazo, azo compounds: – Adiponitrile – 2-butoxime – Alpha-nitroso-beta-naphthol
- Chelates: – EDTA (ethylenediaminetetraacetic acid) – NTA (nitriloacetic acid)
- Sulfides, thio compounds: – Dibenzyldisulfide, thioacetic acid, allylthiourea
- Fatty acid tin salts, such as those used in tin-catalyzed silicone release coatings
- Phosphines: – Triphenylphosphine
- Phosphites: – Triethylphosphite
- Arsines, stibenes, selenide, telluride:
- Triphenylarsine, triphenylstibene
- P-chlorophenylcarboxymethylselenide
- Chlorinated hydrocarbons that contain amine stabilizers
- Alcohols: – Ethanol, methanol
- Esters: – Ethyl acetate, vinyl acetate
- Compounds with unsaturated bonds
- Nonchlorinated aromatic and aliphatic solvents: – Toluene, xylene – Hexane, mineral spirits
- Polyethylene that has an anti-slip, antioxidant or other additive listed previously
- Primers with pigments that contain compounds listed previously
- 100% sodium salt primers, such as sodium alginate or carboxymethylcellulose sodium salt however, if these salts are used with hydroxyethylcellulose, inhibition will not occur
- Clay coatings that use polyvinylacetate or acrylic latex as a binder
- Coatings that contain calcium carbonate
- Coatings composed of the following combinations:
- Natural rubber latex/clay; latex/ethylated starch
- Styrene/acrylic
- Polyvinylacetate; polyvinylacetate/acrylic
- Polyvinylalcohol; polyvinylalcohol/alginate
- Ethylcellulose; hydroxyethylcellulose/alginate; hydroxyethylcellulose/carboxymethylcellulose
- Clay/S.B.R. coatings
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