Preparation method of nano epoxy resin insulating material

Abstract

The invention discloses a preparation method of a nano epoxy resin insulating material. The method comprises the following specific steps: taking modified nano silicon dioxide, a flame retardant, sodium tripolyphosphate, an anti-aging agent, N-methyl pyrrolidone and a dispersing agent according to a weight part ratio, adding into an ethanol water solution, heating, stirring, ultrasonically dispersing, filtering, and drying to obtain a mixture I; taking an epoxy resin, sodium methyl silicate, benzoic anhydride, ethylene glycol diglycidyl ether and N-phenyl-2-naphthylamine according to a weightpart ratio, adding into a sealed container with a stirring function, and performing irradiation stirring treatment to obtain a mixture II; adding the mixture I and the mixture II into a supercriticalreaction device, and curing to obtain an epoxy resin; and replacing the epoxy resin with a nano epoxy resin. The nano epoxy resin insulating material has the advantages of high strength, good insulating property and long service life. The adopted modified nano silicon dioxide material can overcome the influence of agglomeration of micro-nano particles on the electrical property of the epoxy resinin the prior art.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a preparation method of a nano-epoxy resin insulating material. Background technique [0002] In the electronics and information industries, many functional components need to be packaged as a whole after assembly to improve their performance and service life. As a packaging material, it can neither affect the performance of the component, but also play a protective role. Insulating material is an essential material in electrical products, and it is also an important guarantee for the long-term safe and reliable operation of electrical products. As far as low-voltage electrical appliances are concerned, their shells and some components are made of electrical insulating materials, so it can be said that insulating materials are the most commonly used materials in low-voltage electrical appliances. Most of the shells and some components of low-voltage electrical appl...

AI Technical Summary

Problems solved by technology

In addition, if there is no chemical combination between the inorganic nanoparticles and the organic epoxy matrix, the interface strength is weak, resulting in large defects in the composite insulating material system.