F-level heat-proof solvent-impregnated resin suitable for subatmospheric pressure and normal temperature

Abstract

The invention discloses an F-grade heat-resisting solvent impregnated resin suitable for vacuum pressure and normal temperature. The F-grade heat-resisting solvent impregnated resin is prepared by mixing 100 portions of a composition A and 80 to 120 portions of a composition B, wherein, according to weight portion, the composition A is prepared by mixing 60 to 90 portions of I-epoxide resin, 10 to 40 portions of II-epoxide resin and 2 to 4 portions of a stabilizing agent; the composition B is prepared by mixing 80 to 120 portions of fluid estolide and 10 to 20 portions of a plasticizer; and the I-epoxide resin is a bisphenol A-type expoxide resin. The composition A and the composition B are respectively packaged and stored separately and are used by mixing according to the ratio of 1 to 0.8-1.2. The solvent impregnated resin is used together with special dry mica tape and special moderate-resin mica tape which contain a curing accelerating agent and are matched with the solvent impregnated resin specially. The F-grade heat-resisting solvent impregnated resin has the advantages of cleanliness, environment protection, rapid high temperature solidification, small mass loss in the curing process and high purity quotient of each component.

Description

technical field

[0001] The invention relates to an impregnating resin, in particular to a vacuum pressure impregnating resin which does not contain a styrene active diluent and is suitable for the VPI impregnation of the stator windings of F-class high-voltage motors and electric appliances, and the impregnation and coil VPI of generators. At the same time, it also relates to the preparation, use method and application of the impregnating resin. Background technique

[0002] In the manufacturing technology of high-voltage motors and power generation equipment, the performance of insulating materials and the stability of long-term use are one of the core technologies of products. Issues such as thinning the insulation thickness, improving the temperature resistance level of the product, improving the thermal mechanical properties of the insulation structure, reducing the "three wastes" emissions in the production process, reducing energy consumption, and improving production ...