Method for preparing automobile cooling liquid
A technology for automobile cooling and preparation steps, which is applied in the field of automobile coolant preparation, which can solve the problems of reduced thermal conductivity of coolant, poor storage stability of coolant, and poor biodegradability of components, etc., and achieve good corrosion resistance and scale inhibition performance, Ease of long-term storage and good storage stability
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example 1
[0017] First in parts by weight, get 30 parts of formaldehyde, 20 parts of acetone, 19 parts of mass fraction of 20% ammonia water, 6 parts of tetraethyl orthosilicate and 2 parts of dodecyl mercaptan, first formaldehyde, acetone and orthosilicon Put ethyl acetate into a four-necked flask equipped with a stirrer, a thermometer and a dropping funnel, place the four-necked flask in a water bath, use nitrogen protection, set the temperature at 50°C, and preheat at 150r / min for 15min ; Then according to the above parts by weight, the mass fraction is 20% ammonia water and dodecyl mercaptan and stirred evenly to obtain a mixed solution. After the above-mentioned preheating finishes, the temperature is raised to 90° C. drop / s into a four-necked flask, and after stirring and reacting for 20 minutes, add cerium nitrate with 1% dodecyl mercaptan mass, and continue stirring and reacting for 6 hours; Filtrate, collect the filtrate, put the filtrate into a vacuum concentration tank, conce...
example 2
[0020] First in parts by weight, get 33 parts of formaldehyde, 23 parts of acetone, 21 parts of mass fraction of 20% ammonia water, 9 parts of tetraethyl silicate and 2.5 parts of dodecyl mercaptan, first formaldehyde, acetone and orthosilicon Put ethyl acetate into a four-necked flask equipped with a stirrer, a thermometer and a dropping funnel, place the four-necked flask in a water bath, use nitrogen protection, set the temperature at 55°C, and preheat at 150r / min for 18min ; Then according to the above parts by weight, the mass fraction is 20% ammonia water and dodecyl mercaptan and stirred evenly to obtain a mixed solution. After the above-mentioned preheating finishes, the temperature is raised to 93° C. Add dropwise / s into the four-necked flask, stir and react for 25min, then add cerium nitrate with 1.5% dodecyl mercaptan mass, and continue stirring for 7h; Filtrate, collect the filtrate, put the filtrate into a vacuum concentration tank, concentrate in vacuum to 65% of...
example 3
[0023] First in parts by weight, get 35 parts of formaldehyde, 25 parts of acetone, 22 parts of mass fraction of 20% ammonia water, 12 parts of tetraethyl silicate and 3 parts of dodecyl mercaptan, first formaldehyde, acetone and orthosilicon Put ethyl acetate into a four-necked flask equipped with a stirrer, a thermometer and a dropping funnel, place the four-necked flask in a water bath, use nitrogen protection, set the temperature at 60°C, and preheat at 150r / min for 20min ; Then according to the above parts by weight, the mass fraction is 20% ammonia water and dodecyl mercaptan and stirred evenly to obtain the mixed solution. After the above-mentioned preheating is completed, the temperature is raised to 95° C. drop / s into a four-necked flask, and after stirring and reacting for 30 minutes, add cerium nitrate with 2% dodecyl mercaptan mass, and continue stirring and reacting for 8 hours; Filtrate, collect the filtrate, put the filtrate into a vacuum concentration tank, vac...
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