POLYMERIC INSULATOR AND ITS MANUFACTURING PROCESS Russian patent published in 2004 - IPC

FIELD: electrical engineering; polymeric insulators and their manufacture.

SUBSTANCE: polymeric insulator has fiberglass insulator pin and insulating member joined together by binding material, as well as metal end terminals; insulating member has body and annular ribs provided with conical depression in bottom part in the form of all-cast shell; angle of inclination α of conical depression generatrix to plane of its base in degrees and rounding radius R at point where depression surface abuts against insulating member body in millimeters are chosen from following ratio: α/R = 2.5 - 4.0. Insulating member can be made of elastomer such as additive-cured silicon rubber. Polymeric insulator manufacturing process includes production of insulating member and insulator pin, their joining together with aid of binding material applied to insulator pin surface over its entire length; insulating member is placed in mold whereto elastomer is injected under pressure and exposed to temperature of 100 - 140 ⁰C for 5 - 15 min. Additive-cured silicon rubber incorporating vinyl- and hydrogen-containing siloxanes cross-linked under effect of platinum catalyst can be used as elastomer.

EFFECT: reduced power and labor consumption, facilitated manufacture, enhanced mechanical strength of insulator-pin-to-insulating-member boundary layer.

4 cl, 2 dwg