High-temperature resistant insulating transformer and processing method thereof
A processing method and high temperature resistant technology, applied in the field of transformers, can solve the problems of complex manufacturing process, high production cost, high temperature resistant insulation transformer and insignificant insulation effect, etc.
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Embodiment 1
[0033] At 200°C, mix 100kg of bisphenol A epoxy resin, 18kg of phenolic resin, 8kg of polyimide resin, 7kg of zinc borate, 60kg of trimethylolpropane, 16kg of benzoyl peroxide, 5kg of melamine phosphate, and nano-titanium dioxide 1 kg, 10 kg of mica powder and 8 kg of zirconia were mixed for 2.5 hours, and then cooled to obtain high temperature resistant insulating coating composition A1. Among them, the particle size of nanometer titanium dioxide is 8nm, and the particle size of mica powder is 0.1mm.
[0034] At 25°C, the high temperature resistant insulating coating composition was painted on the inner and outer walls of the transformer to form a paint film. The high temperature resistance parameters, breakdown strength parameters and volume resistivity parameters of the paint film are shown in Table 1.
Embodiment 2
[0036]At 180°C, mix 100kg of bisphenol A epoxy resin, 15kg of phenolic resin, 6kg of polyimide resin, 5kg of zinc borate, 50kg of trimethylolpropane, 12kg of benzoyl peroxide, 2kg of melamine phosphate, and nano-titanium dioxide 0.5 kg, 7 kg of mica powder and 5 kg of zirconia were mixed for 2 hours, and then cooled to obtain high temperature resistant insulating coating composition A2. Among them, the particle size of nanometer titanium dioxide is 5nm, and the particle size of mica powder is 0.05mm.
[0037] At 20°C, the high temperature resistant insulating coating composition was painted on the inner and outer walls of the transformer to form a paint film. The high temperature resistance parameters, breakdown strength parameters and volume resistivity parameters of the paint film are shown in Table 1.
Embodiment 3
[0039] At 220°C, mix 100kg of bisphenol A epoxy resin, 20kg of phenolic resin, 9kg of polyimide resin, 10kg of zinc borate, 70kg of trimethylolpropane, 20kg of benzoyl peroxide, 9kg of melamine phosphate, and nanometer titanium dioxide 1.5 kg, 12 kg of mica powder and 10 kg of zirconia were mixed for 3 hours, and then cooled to obtain high temperature resistant insulating coating composition A3. Wherein, the particle diameter of nanometer titanium dioxide is 10nm, and the particle diameter of mica powder is 0.15mm.
[0040] At 30°C, the high temperature resistant insulating coating composition was painted on the inner and outer walls of the transformer to form a paint film. The high temperature resistance parameters, breakdown strength parameters and volume resistivity parameters of the paint film are shown in Table 1.
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