a nano-sio 2 Preparation method of modified palm insulating oil
A technology of insulating oil and palm, applied in recycling technology, chemical instruments and methods, petroleum industry, etc., can solve the problems of overheating of transformers and weak thermal conductivity of palm insulating oil
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Embodiment 1
[0031] A kind of nano-SiO 2 The preparation method of the modified palm insulating oil comprises the following steps:
[0032] Step S1, adding SiO in the ball mill 2 Nanoparticles, then add dodecyltrimethoxysilane, mix and ball mill after heating, control the temperature in the ball mill at 60°C, and the ball milling time is 1.8h to obtain a mixture; the added amount of dodecyltrimethoxysilane for SiO 2 5% by weight of nanoparticles;
[0033] Step S2, add oleic acid to the mixture obtained in step S1, then continue to heat up to 70°C, stir, and then ultrasonically vibrate. The number of times is more than three times, and the SiO-containing 2 Washing solution for nanoparticles;
[0034] Step S3, filter the resulting SiO in step S2 2 The washing solution of nanoparticles was dried in a vacuum drying oven with a vacuum degree of -0.06MPa and a drying temperature of 80°C to obtain primary modified SiO 2 Nanoparticles;
[0035] Step S4, the primary modified SiO obtained in...
Embodiment 2
[0041] A kind of nano-SiO 2 The preparation method of the modified palm insulating oil comprises the following steps:
[0042] Step S1, adding SiO in the ball mill 2 Nanoparticles, then add dodecyltrimethoxysilane, mix and ball mill after heating, control the temperature in the ball mill at 65°C, and the ball milling time is 2.2h to obtain a mixture; the added amount of dodecyltrimethoxysilane for SiO 2 15% by weight of nanoparticles;
[0043] Step S2, add oleic acid to the mixture obtained in step S1, then continue to heat up to 75°C, stir, and then oscillate ultrasonically. The number of times is more than three times, and the SiO-containing 2 Washing solution for nanoparticles;
[0044] Step S3, filter the resulting SiO in step S2 2 The washing solution of nanoparticles was dried in a vacuum drying oven with a vacuum degree of -0.06MPa and a drying temperature of 85°C to obtain primary modified SiO 2 Nanoparticles;
[0045] Step S4, the primary modified SiO obtained...
Embodiment 3
[0051] A kind of nano-SiO 2 The preparation method of the modified palm insulating oil comprises the following steps:
[0052] Step S1, adding SiO in the ball mill 2 Nanoparticles, then add dodecyltrimethoxysilane, mix and ball mill after heating, control the temperature in the ball mill at 62°C, and the ball milling time is 2h to obtain a mixture; the added amount of dodecyltrimethoxysilane is SiO 2 10% by weight of nanoparticles;
[0053] Step S2, add oleic acid to the mixture obtained in step S1, then continue to heat up to 72°C, stir, and then oscillate ultrasonically. The number of times is more than three times, and the SiO-containing 2 Washing solution for nanoparticles;
[0054] Step S3, filter the resulting SiO in step S2 2 The washing solution of nanoparticles was dried in a vacuum drying oven with a vacuum degree of -0.06MPa and a drying temperature of 82°C to obtain primary modified SiO 2 Nanoparticles;
[0055] Step S4, the primary modified SiO obtained in...
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