Epoxy resin composite insulating material and preparation method thereof

Abstract

The invention provides an epoxy resin composite insulating material and a preparation method thereof. The epoxy resin composite insulating material is formed by preparing microcapsules, a ruthenium carbene complex catalyst, and a component including at least a bisphenol A type epoxy resin, a first curing agent, a curing accelerator, and a toughening agent. The microcapsules are formed by preparinga urea-formaldehyde resin performed polymer composition and a core material composition in the presence of a second curing agent and a modifier, the urea-formaldehyde resin performed polymer composition is formed by stirring and heating urea, formaldehyde and deionized water under alkaline conditions, and the core material composition is formed by stirring an emulsifier, dicyclopentadiene and deionized water under heating condition. The epoxy resin composite insulating material has the ability to self-repair when damaged.

Description

technical field [0001] The invention belongs to the technical field of electrical insulation and composite materials, in particular to an epoxy resin composite insulation material and a preparation method thereof. Background technique [0002] Epoxy resin materials have high dielectric strength, stable chemical properties, and excellent weather resistance. They have been used in the field of electrical insulation since the late 1940s, especially in electrical equipment as packaging and casting materials. [0003] However, in the actual operating environment, epoxy resin insulating materials are affected by various factors such as electricity, humidity, heat, machinery and chemistry for a long time, and the material ages, resulting in physical defects such as water branches or electric branches. Physical damage such as scratches and cracks caused by the operation during the process will also distort the electric field and cause tree branch discharge, which will lead to a decr...

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Problems solved by technology

[0003] However, in the actual operating environment, epoxy resin insulating materials are affected by various factors such as electricity, humidity, heat, machinery and chemistry for a long time, and the material ages, resulting in physical defects such as water branches or electric branches. Physical damage such as scratches and cracks generated during the operation will also distort the electric field, cause tree branch discharge and other phenomena, resulting in a decrease in insulation performance, and eventually cause the epoxy resin to be broken down and cause a power outage.

[0004] Moreover, the current technology is very difficult to detect and repair the damage and defect parts related to epoxy resin insulation materials. Most of them need to be replaced after a power failure. Therefore, such damage defects may have a greater impact on people's production and life.

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