Back to results
US 4,212,914 AGranted
Electroinsulating material
OwnerLeonty T. Ponomareva, Nina V. Ponomareva +4inventors
InventorsLeonty T. Ponomareva, Nina V. Ponomareva, Sergei V. Vasiliev, Olga V. Maximikhina, Nina M. Golopolosova, Ljudmila I. Belkina
Life of this patent
Estimating the term…
Abstract
The electroinsulating material of the present invention contains a fluorine rubber, low-molecular weight sticky resin, cross-linking agents, particles of a mica-containing material, and a mineral filler. This material features high corona resistance, elasticity, heat resistance, and incombustibility.
Claims8
An electroinsulating material consisting essentially of, in percent by weight,
- ______________________________________ fluorine rubber 20-87 resin 1-10 synthetic rubber 0-30 cross-linking agent 0.1-10 mica 10-60 filler at least 0.9 and re- presenting the balance ______________________________________
- wherein said fluorine rubber is a copolymer of vinylidene fluoride;
- said resin is a low molecular weight sticky resin selected from the group consisting of epoxy resins based on diphenylolpropane, urea-formaldehyde resins, phenol-formaldehyde resins, aminophenol resins, melamine-formaldehyde resins, urethane resins, xylenol resins, coumarone resins and indene-coumarone resins;
- said cross-linking agent is a cross-linking agent for said fluorine rubber;
- the mica consists of particles having a thickness of 1-10 microns;
- and said filler is a mineral filler which acts as a distribution agent for said mica.
3 more elements
Dependencies are inferred from the claim text.