Antistatic heat-conducting silicone oil and synthetic method thereof
A heat-conducting silicone oil and synthesis method technology, applied in chemical instruments and methods, heat exchange materials, other chemical processes, etc., can solve the problem that volatility and antistatic properties cannot meet the requirements of use at the same time, and achieve abundant raw materials and easy control , good storage stability
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Embodiment 1
[0023] A kind of synthetic method of antistatic heat conduction silicone oil, comprises the following steps:
[0024] (1) React 5 g of isophorone diisocyanate, 5 g of polyethylene glycol (Mw=1000) and 100 g of dimethylcyclosiloxane at 80° C. for 1 h to obtain modified dimethylcyclosiloxane;
[0025] (2) Add 2g of lanthanum oxide, 3g of aminoethylaminopropyltriethoxysilane, 2g of divinyltetramethyldisiloxane, 1g of tetramethylhydroxide to the modified dimethylcyclosiloxane After the ammonium is uniformly dispersed by ultrasound, nitrogen gas is introduced for 10-15 minutes, and then in-situ ring-opening polymerization is carried out at 120°C. The polymerization time is 10 hours, and then decomposed and reacted at 140°C for 2 hours to obtain modified silicone oil;
[0026] (3) Add hydrochloric acid to the modified silicone oil system, adjust the pH of the system to be neutral, and then vacuumize it to remove low-volatile components (temperature is 210 ° C, vacuum degree is -0.09...
Embodiment 2
[0032] A kind of synthetic method of antistatic heat conduction silicone oil, comprises the following steps:
[0033] (1) React 10g of toluene diisocyanate, 20g of polyethylene glycol (Mw=400) and 100g of dimethylcyclosiloxane at 75°C for 2h to obtain modified dimethylcyclosiloxane;
[0034] (2) Add 2.5g scandium oxide, 3g aminoethylaminopropyltriethoxysilane, 2g divinyltetramethyldisiloxane, 1g tetramethylhydrogen to the modified dimethylcyclosiloxane After the ammonium oxide is uniformly dispersed by ultrasonic, nitrogen gas is introduced for 10-15 minutes, and then in-situ ring-opening polymerization is carried out at 100°C. The polymerization time is 5 hours, and then decomposed and reacted at 140°C for 3 hours to obtain modified silicone oil;
[0035] (3) Add hydrochloric acid to the modified silicone oil system, adjust the pH of the system to be neutral, and then vacuumize it to remove low-volatile components (temperature is 210 ° C, vacuum degree is -0.09), until no fra...
Embodiment 3
[0040] A kind of synthetic method of antistatic heat conduction silicone oil, comprises the following steps:
[0041] (1) React 10g of isophorone diisocyanate, 5g of polyether diol polyethylene glycol (Mw=800) and 100g of dimethylcyclosiloxane at 75°C for 1.5h to obtain a modified dimethylcyclosiloxane Silicone;
[0042](2) Add 1g of neodymium oxide, 4g of aminoethylaminopropylmethyldimethoxysilane, 2g of divinyltetramethyldisiloxane, 1g of tetramethyldisiloxane to the modified dimethylcyclosiloxane After the ammonium hydroxide is uniformly dispersed by ultrasonication, in-situ ring-opening polymerization is carried out at 135°C after passing nitrogen gas for 10-15 minutes. The polymerization time is 12 hours, and then decomposed and reacted at 145°C for 1.5 hours to obtain modified silicone oil;
[0043] (3) Add hydrochloric acid to the modified silicone oil system, adjust the pH of the system to be neutral, and then vacuumize it to remove low-volatile components (temperatur...
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