Epoxy resin composite material and preparation method thereof

Abstract

The invention provides an epoxy resin composite material and a preparation method thereof. The epoxy resin composite material is prepared from, by mass, 2.5-10 parts of monohydroxy polyether alcohol grafted epoxy resin, 100 parts of epoxy resin, 60-100 parts of curing agent and 1 part of accelerant. According to the invention, the tensile strength of the epoxy resin composite material prepared through the method reaches up to 85 MPa, the bending strength reaches 135 MPa, and cracking is still avoided when the temperature is reduced to -60 DEG C, so that the packaging requirement of electricalequipment such as a high-frequency transformer and the like is greatly met, and the preparation method provided by the invention is simple, reliable and suitable for large-scale production.

Description

technical field

[0001] The invention relates to an insulating packaging material, in particular to an epoxy resin composite material and a preparation method thereof. Background technique

[0002] With the widespread access of DC power sources such as distributed power sources, new energy storage devices, fuel cells, and microgrids, and the wide application of DC loads such as electric vehicles, data centers, computers, and urban rail transit, the traditional distribution network needs to be equipped with AC power at the same time. , DC power supply access and AC / DC load power supply capabilities; on the other hand, the promotion of distributed power generation technology has expanded the traditional power distribution system from a single power supply form to a power generation function, resulting in energy from traditional sources, The one-way flow of grid and load, and the development of two-way flow, which requires the distribution network to have regional energy coordin...

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