FIELD: chemistry.
SUBSTANCE: claimed invention relates to the field of casting resins for switching devices. Described is a solid resin system for insulating materials in the switching devices, which contains a solid bisphenol A-based resin, which has an epoxy number (DIN ISO 16945) from ≥0.2 to ≤0.3, and a liquid bisphenol F-based resin, which has an epoxy number (DIN ISO 16945) from ≥0.4 to ≤0.63, where a part of the liquid bisphenol F-based resin, measured as a weight to the total weight of the resin, constitutes from ≥5% to ≤60%, with the solid resin system before hardening having an epoxy number (DIN ISO 16945) from ≥0.2 to ≤0.55, and the solid resin system includes as resins only the said resins themselves. Also described is application of the said solid resin system as an insulating material in electric switching devices.
EFFECT: obtaining the solid resin system, possessing low susceptibility to cracking and high resistance to bursting.
7 cl, 1 ex
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