H - Electricity – 01 – B
Patent
H - Electricity
01
B
H01B 3/22 (2006.01) H01B 3/30 (2006.01) H01B 3/40 (2006.01) H01B 3/46 (2006.01)
Patent
CA 2074217
ABSTRACT OF THE DISCLOSURE Improved synthetic resin insulators having enhanced arc track resistance and reduced UV light degra- dation characteristics are provided which include a continuous resin phase and a discrete, discontinuous hydrophobic phase in the form of discrete, suspended droplets within the resin. The preferred insulators are formed of a continuous epoxy matrix having suspended droplets of petrolatum dispersed therein. The resin phase comprises from about 15 to 50% by weight of the composi- tion, whereas the hydrophobe is present at a level from about 2 to 10% by weight. UV light resistance is improved by predissolving or predispersing a quantity of UV light absorber in the hydrophobe before the latter is mixed with the resin phase. Use of a hydrophobe which is solid at normal temperatures but which melts above about 80°F (such as petrolatum) results in lower dust attraction during ordinary conditions and the ability to melt and effective- ly encapsulate surface dust during periods of increased arcing activity.
Chance (a.b.) Company
Gowling Lafleur Henderson Llp
Rinehart William M.
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