SU405935A1 - COOLING LIQUID AuthorsD. V. Nazarova, G. V, Voropaeva and V. M. Shilova - Google Patents

COOLING LIQUID AuthorsD. V. Nazarova, G. V, Voropaeva and V. M. Shilova

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Publication number
SU405935A1
SU405935A1 SU1671319A SU1671319A SU405935A1 SU 405935 A1 SU405935 A1 SU 405935A1 SU 1671319 A SU1671319 A SU 1671319A SU 1671319 A SU1671319 A SU 1671319A SU 405935 A1 SU405935 A1 SU 405935A1
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SU
USSR - Soviet Union
Prior art keywords
cooling liquid
voropaeva
authorsd
shilova
nazarova
Prior art date
Application number
SU1671319A
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Russian (ru)
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Priority to SU1671319A priority Critical patent/SU405935A1/en
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Publication of SU405935A1 publication Critical patent/SU405935A1/en

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Description

1one

Изобретение относитс  к охлаладающим жидкост м дл  двигателей внутреннего сгорани .The invention relates to cooling liquids for internal combustion engines.

Известна охлаждающа  жидкость на основе водного раствора гликол , например этиленгликол , с добавлением присадки - эмульсии полиорганосилоксанов, снил ;ающей пенообразование . Однако вводима  присадка разрушаетс  при повышенных температурах в процессе работы охлаждающих жидкостей и не обеспечивает стабильного пеногас щего эффекта .A cooling liquid based on an aqueous solution of a glycol, for example ethylene glycol, is known, with the addition of an additive, an emulsion of polyorganosiloxanes, which has removed foaming. However, the additive is destroyed at elevated temperatures during the operation of the coolants and does not provide a stable defoaming effect.

Цель изобретени  - повышение пеногас щик свойств охлаждающей жидкости - достигаетс  тем, что в качестве присадки ввод т 1 - 10%-ный бутанольный раствор олигоорганосилоксанового эфира общей формулыThe purpose of the invention is to increase the defoaming agent of coolant properties - it is achieved by introducing 1-10% butanol solution of oligoorganosiloxane ester of the general formula as an additive.

R IR i

R0-f-Si-O R0-f-Si-O

--R I OR--R I OR

где R - алкил или арил; R-Сз-С2о-алкил; п 2-10, предпочтительно в количестве 0,001-0,1 вес.%.where R is alkyl or aryl; R-Cz-C2o-alkyl; P 2-10, preferably in an amount of 0.001-0.1 wt.%.

Пример. К 145 мл 50 об.%-ного водного раствора этиленгликол  добавл ют 0,22 мл 5 об.%-пого бутанольного раствора олигоорганосилоксапового эфира, при 71+0,5°С в течение 5 мин через смесь барботируют воздухExample. To 145 ml of a 50% vol.% Aqueous solution of ethylene glycol, 0.22 ml of a 5% vol. - butyl butanol solution of an oligoorganosiloxapic ester was added, at 71 + 0.5 ° C air was bubbled through the mixture for 5 minutes

СО скоростью 1000±25 мл/мин. Измер ют объем пены и врем  ее гашени . Результаты опытов приведены в таблице.With a speed of 1000 ± 25 ml / min. The foam volume and quenching time are measured. The results of the experiments are given in the table.

Из приведенных в таблице данных видно, что в процессе эксплуатации известные присадки быстро тер ют свои пеногас щие свойства , что, видимо, обусловлено потерей дисперсности присадки в рабочем объеме охлаждаюш .ей жидкости.From the data in the table it can be seen that during the operation, the known additives quickly lose their defoaming properties, which is apparently due to the loss of the dispersity of the additive in the working volume of the cooling liquid.

При использовании водных эмульсий происходит их разрушение и коалесценци  (сли ние ) капелек выделившейс  силиконовой жидкости .When using aqueous emulsions, their destruction and coalescence (fusion) of droplets of the released silicone fluid occurs.

В случае применени  растворов полиметилсилоксанов (ПМС-200А) это св зано с понижением растворимости полиметилсилоксана в спирте при введении в охлаждающие жидкости .In the case of the use of solutions of polymethylsiloxanes (PMS-200A), this is associated with a decrease in the solubility of polymethylsiloxane in alcohol when introduced into coolants.

Предлагаема  присадка, представл юш а  собой полиорганосилоксановый эфир линейной структуры, лишена указанных недостатков и работоспособна длительное врем .The proposed additive, which is a polyorganosiloxane ester of a linear structure, is devoid of these shortcomings and is operable for a long time.

В качестве растворител  дл  присадки выбран н-бутиловый спирт, поскольку он обладает высокой температурой кипени  и наибольшей совместимостью с водными . растворами . Низшие спирты, имеюшие низкие температуры кипени , в процессе эксплуатации охлаждаюш,их жидкостей испар ютс , что приводит к ухудшению дисперсности присадки.N-butyl alcohol was chosen as the solvent for the additive, since it has a high boiling point and is most compatible with water. solutions. The lower alcohols, which have low boiling points, are cooled during operation, their liquids evaporate, which leads to a deterioration of the dispersity of the additive.

Спирты с Сз и более практически нерастворимы в водных растворах и не могут быть использованы как растворители - диспергаторы .Alcohols with Sz and more practically insoluble in aqueous solutions and can not be used as solvents - dispersants.

Предмет изобретени Subject invention

1. Охлаждаюш,а  жидкость на основе водного раствора гликол  с добавлением присадок , отличающа с  тем, что, с целью повышени  пеногас щих свойств жидкости, в ее состав в качестве присадки введен 1 - 10%-ный бутанольный раствор олигоорганосилоксанового эфира общей формулы1. Cooling, and a liquid based on an aqueous solution of glycol with the addition of additives, characterized in that, in order to improve the antifoaming properties of the liquid, a 1–10% butanol solution of oligoorganosiloxane ester of the general formula is introduced as an additive

RR

I R0-(-5i-0I R0 - (- 5i-0

I ORI OR

где R - алкил или арил; R - Сз-Сао-алкил; . 2. Жидкость по п. I,where R is alkyl or aryl; R is Cz-Sao-alkyl; . 2. Liquid under item I,

тем, что присадка введена в количестве 0,001 - 0,1 вес.%.the fact that the additive is introduced in the amount of 0.001 to 0.1 wt.%.

SU1671319A 1971-06-11 1971-06-11 COOLING LIQUID AuthorsD. V. Nazarova, G. V, Voropaeva and V. M. Shilova SU405935A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1671319A SU405935A1 (en) 1971-06-11 1971-06-11 COOLING LIQUID AuthorsD. V. Nazarova, G. V, Voropaeva and V. M. Shilova

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1671319A SU405935A1 (en) 1971-06-11 1971-06-11 COOLING LIQUID AuthorsD. V. Nazarova, G. V, Voropaeva and V. M. Shilova

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SU405935A1 true SU405935A1 (en) 1973-11-05

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SU1671319A SU405935A1 (en) 1971-06-11 1971-06-11 COOLING LIQUID AuthorsD. V. Nazarova, G. V, Voropaeva and V. M. Shilova

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2678036C1 (en) * 2014-12-26 2019-01-22 Тойота Дзидося Кабусики Кайся Cooling composition, method for operating internal combustion engine with its use and its use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2678036C1 (en) * 2014-12-26 2019-01-22 Тойота Дзидося Кабусики Кайся Cooling composition, method for operating internal combustion engine with its use and its use

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