Heat-resistant insulating adhesive for transformers
A heat-resistant insulation and adhesive technology, applied in the field of transformers, can solve the problems of reducing the service life and stability of electronic components, the heat is too late to dissipate, and the process operation is inconvenient, etc., to achieve small size, improve heat resistance, and The effect of large surface area
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Embodiment 1
[0017] A heat-resistant insulating adhesive for transformers, the raw materials of which include by weight: 50 parts of modified phenolic resin, 9 parts of curing agent, 4 parts of diluent, 5 parts of coupling agent, 1 part of plasticizer, Fuel agent 4 parts.
Embodiment 2
[0019] A heat-resistant insulating adhesive for transformers, the raw materials of which include by weight: 75 parts of modified phenolic resin, 5 parts of curing agent, 11 parts of diluent, 1 part of coupling agent, 3 parts of plasticizer, resistance 1 part fuel;
[0020] Wherein, the preparation method of the modified phenolic resin is as follows: add phenol and water to the reaction kettle, heat up, stir until the phenol is completely dissolved, add eugenol and formaldehyde, stir evenly, add a catalyst, adjust the pH to acidity, heat up, and keep warm Polycondensation reaction, heating up distillation dehydration, cooling down, adding nano-silica, stirring reaction, heating up distillation dehydration, to obtain reactants, and vacuum dephenolization of reactants to obtain modified phenolic resin;
[0021] The plasticizer is tributyl phosphate.
Embodiment 3
[0023] A heat-resistant insulating adhesive for transformers, the raw materials of which include by weight: 65 parts of modified phenolic resin, 7 parts of curing agent, 7 parts of diluent, 3 parts of coupling agent, 2 parts of plasticizer, 2.5 parts of fuel;
[0024] Wherein, the preparation method of the modified phenolic resin is as follows: add phenol and water to the reaction kettle, heat up to 65°C, stir until the phenol is completely dissolved, add eugenol and formaldehyde, stir evenly, add a catalyst, adjust the pH to 1, Raise the temperature to 93°C, heat-preserve polycondensation for 1.5 hours, raise the temperature to 130°C for distillation and dehydration, cool down to 105°C, add nano-silica, stir and react for 65 minutes, heat up to 150°C for distillation and dehydration, and obtain the reactant. After carrying out vacuum dephenolization under a certain pressure, a modified phenolic resin is obtained;
[0025] The mass ratio of the phenol, eugenol, formaldehyde a...
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