Tracking-resistant epoxy resin nano composite material and preparation method thereof
A nano-composite material and epoxy resin technology, applied in the field of insulating composite materials for power transmission and transformation equipment, can solve the problems of large specific surface area of micron particles, damage to insulation performance, high surface energy, etc. Reduced effect
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Embodiment 1
[0040] The tracking-resistant epoxy resin nanocomposite material of this embodiment.
[0041] First of all, the surface of the micron needs to be treated. The surface of the micron particles used is modified with methyl tetrahydrophthalic anhydride, which is easier to disperse in the epoxy resin.
[0042] The epoxy resin nanocomposite material added in this example uses bisphenol A epoxy resin as the skeleton, methyltetrahydrophthalic anhydride as the curing agent, and N,N-dimethylbenzylamine as the accelerator. According to the proportion of materials required in the preparation process, including E-51 (bisphenol A diglycidyl ether type) with a mass ratio of 1:1:3-1:1:3.5, curing agent methyl tetrahydrophthalic anhydride and nano-dioxide Silicon powder.
[0043] In parts by mass, weigh 100 parts of E-51 (bisphenol A diglycidyl ether type), 85 parts of curing agent methyltetrahydrophthalic anhydride, 1.2 parts of N,N-dimethylbenzylamine and a mass percentage of 60wt % nano-s...
Embodiment 2
[0057] The preparation method of the anti-tracking epoxy resin nanocomposite material of this embodiment is an example of a nano-epoxy sample with a mass percentage of 3wt%. The specific preparation method is as follows:
[0058] Step (1), 100 parts of epoxy and 60 wt% nano-silica particles were degassed and dried in an oven with a temperature range of 60° C. for 24 hours, and then stirred and mixed to obtain the first mixture.
[0059] Ultrasonic dispersion is a cavitation phenomenon that occurs during ultrasonic vibration. Microbubbles form and rupture in the liquid medium, and a strong vibration wave is generated instantaneously with energy release. The rapid formation and sudden collapse of air bubbles in the liquid creates a short-lived high-energy microenvironment. , resulting in local high temperature, high pressure and other phenomena.
[0060] Due to the local high temperature near the ultrasonic probe during ultrasonic dispersion, if the curing agent is added in adva...
Embodiment 3
[0066] The preparation method of the anti-tracking epoxy resin nanocomposite material of this embodiment is an example of a nano-epoxy sample with a mass percentage of 3wt%. The specific preparation method is as follows:
[0067] Step (1), 100 parts of epoxy and 60 wt% nano-silica particles were degassed and dried in an oven with a temperature range of 60° C. for 24 hours, and then stirred and mixed to obtain the first mixture.
[0068] Ultrasonic dispersion is a cavitation phenomenon that occurs during ultrasonic vibration. Microbubbles form and rupture in the liquid medium, and a strong vibration wave is generated instantaneously with energy release. The rapid formation and sudden collapse of air bubbles in the liquid creates a short-lived high-energy microenvironment. , resulting in local high temperature, high pressure and other phenomena.
[0069] Due to the local high temperature near the ultrasonic probe during ultrasonic dispersion, if the curing agent is added in adva...
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Abstract
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