High-low temperature instrument oil composition and preparation method thereof
A kind of instrument oil, high and low temperature technology, applied in the direction of lubricating composition, petroleum industry, etc., to achieve the effect of excellent chemical stability, low evaporation loss, high flash point
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Embodiment 1
[0057] 1) 89.35 kg of ethyl silicone oil (V 50 =16.85mm 2 / s) and 10 kg of bis(2-ethylhexyl) sebacate were added to the reaction kettle, heated and stirred to 110±5°C, vacuumed to -0.05MPa, and kept at constant temperature and constant vacuum for 60±5 minutes for dehydration ;
[0058] 2) Add 0.3 kg of 2,6-di-tert-butyl-p-cresol, 0.1 kg of N-phenyl-α-naphthylamine, 0.2 kg of dodecenylsuccinic acid and 0.05 kg of benzotriazole , stirred for 15±5 minutes, then cooled to 60±5°C;
[0059] 3) Filter twice through a bag filter with a precision of 1 μm to obtain high and low temperature instrument oil.
Embodiment 2
[0061] 1) 94.4 kg of ethyl silicone oil (V 50 =13.73mm 2 / s) and 5 kg of bis(2-ethylhexyl) adipate were added to the reaction kettle together, heated and stirred to 110±5°C, vacuumed to -0.05MPa, and kept at constant temperature and constant vacuum for 45±5 minutes for dehydration ;
[0062] 2) Add 0.1 kg of 2,6-di-tert-butyl-p-cresol, 0.2 kg of N-phenyl-β-naphthylamine, 0.2 kg of sorbitan monooleate and 0.1 kg of benzotriazepam Azole derivatives, stirred for 15±5 minutes, then cooled to 60±5°C;
[0063] 3) Filter twice through a bag filter with a precision of 1 μm to obtain high and low temperature instrument oil.
Embodiment 3
[0065] 1) 148.2 kg of ethyl silicone oil (V 50 =20.21mm 2 / s) and 50 kg of bis(2-ethylhexyl) sebacate were added to the reaction kettle together, heated and stirred to 120°C±5°C, vacuumed to -0.05MPa, and kept at constant temperature and constant vacuum for dehydration at 60±5 minute;
[0066] 2) sequentially add 0.4 kg of 4,4'-methyl bisphenol, 0.7 kg of octylbutyl diphenylamine, 0.2 kg of dodecenyl succinic acid and 0.2 kg of sorbitan monooleate, 0.1 Kg of benzotriazole and 0.2 kg of 2,5-dithio-1,3,4-thiadiazole derivatives, stirred for 15±5 minutes, then cooled to 60±5°C;
[0067] 3) Filter twice through a bag filter with a precision of 1 μm to obtain high and low temperature instrument oil.
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