CN1041382A - Deicing fluid and production method thereof - Google Patents

Abstract

Deicing fluid; it is water/glycol composition; comprise certain anti-corrosive protecting agent; its manufacture method is simple, and required equipment is few, is suitable for the production of any batch; this product is cheap; life cycle is long, can obtain the antifreezing effect of-40 ℃ even-50 ℃, and cooling systems such as automobile, air-conditioning antifreeze, anti-that can be widely used in district in all parts of the country boil, anticorrosion.

Description

Deicing fluid and production method thereof

The invention belongs to water/glycol composition and manufacture method thereof.

The deicing fluid kind of producing both at home and abroad is a lot of at present, and following three classes are arranged substantially:

The alcohol-water type, this deicing fluid is prevented the freezing point height, it is dangerous easily to catch fire;

Sweet oil-water type, this deicing fluid cost height, uneconomical;

Ethylene glycol-water type, this deicing fluid freezing point is low, can reach-60 ℃, and cost is low, but has corrodibility, adopt the deicing fluid of this pattern now mostly, but in the prior art, the sanitas complexity of being added, cost is also high, manufacturing process complexity, equipment requirements height.

The purpose of this invention is to provide and a kind ofly be made up of several simple materials, production technique is simple, and equipment requirements is low and can fully satisfy deicing fluid and production method thereof antifreeze, requirement for anticorrosion.

Deicing fluid of the present invention is made of by weight percentage following several material compositions:

1. glycol mainly is selected from ethylene glycol, Diethylene Glycol, and propylene glycol or its mixture account for 5-80%;

2. water accounts for 16-90%;

3. potassium bichromate 0.05-0.2%;

4. Sodium Nitrite 1-3%;

5. sodium tetraborate 0.3-1%;

6. Sodium hexametaphosphate 99 is less than 0.01%.

Glycol is preferably selected ethylene glycol for use, and in the deicing fluid, it is painted to comprise that also dyestuff or pigment are used for, and in manufacturing processed, also can add the defoamer tbp of an amount of (＜0.01%).

The production method of this deicing fluid comprises following step:

1. in stirred pot, discharge water, be heated to 40 ℃-60 ℃ by prescription;

2. take by weighing potassium bichromate by prescription, Sodium Nitrite, sodium tetraborate, Sodium hexametaphosphate 99 joins in the warm water stirring and dissolving;

3. add glycol slowly by the prescription consumption, mix;

4. add necessary pigment or dyestuff, stirring and dissolving.

In process of production, bubble may be occurred, the appropriate amount of defoamer tbp can be added.

This deicing fluid; form simple; convenient for production; product is cheap, can be mixed with-10 ℃--and antifreeze various deicing fluid in 50 ℃ of scopes can form one deck protection passivation film in the metallic surface of cooling system; can suppress corrosion of metal effectively; this product also has higher boiling point, can prevent effectively boiling, and reduces the evaporation of moisture content.

Introduce two specific embodiments below.

The example table is as follows by weight percentage:

Second embodiment of first embodiment

% %

Glycol 45-53 28

Water 45-50 70.6

Potassium bichromate 0.1-0.13 0.06

Sodium Nitrite 1.2-1.5 1.0

Sodium tetraborate 0.4-0.6 0.3

Sodium hexametaphosphate 99 0.003 0.002

The deicing fluid of first embodiment can be at-35 ℃--and antifreeze in 45 ℃ of scopes, the deicing fluid of second embodiment can be antifreeze-20 ℃ of left and right sides.

Claims (8)

1, a kind of deicing fluid is characterized in that comprising following composition:

1. account for the glycol of composition total weight 5-80%, it is selected from ethylene glycol, Diethylene Glycol, propylene glycol or its mixture;

2. account for the water of composition total weight 16-90%;

3. account for the potassium bichromate of composition total weight 0.05-0.2%;

4. account for the Sodium Nitrite of composition total weight 1-3%;

5. account for the sodium tetraborate of composition total weight 0.3-1%;

6. account for composition total weight less than 0.01% Sodium hexametaphosphate 99.

2, deicing fluid according to claim 1 is characterized in that the shared weight percent of each component is as follows: glycol 45-53%; Potassium bichromate 0.1-0.13%; Sodium Nitrite 1.2-1.5%; Sodium tetraborate 0.4-0.6%; Sodium hexametaphosphate 99 0.003%; Water 45-50%; Deicing fluid is joined by institute can be antifreeze in-35 ℃ of-45 ℃ of scopes.

3, deicing fluid according to claim 1 is characterized in that the shared weight percent of each component is as follows: glycol 28%; Potassium bichromate 0.06%; Sodium Nitrite 1.0%; Sodium tetraborate 0.3%; Sodium hexametaphosphate 99 0.002%, water 70.6%; The deicing fluid of being joined can be antifreeze-20 ℃ of left and right sides.

4,, it is characterized in that to contain the defoamer tbp of an amount of (＜0.01%) according to claim 1 or 2 or 3 described deicing fluid.

5, according to claim 1 or 2 or 3 described deicing fluid, it is characterized in that preferably ethylene glycol of glycol.

6, according to the described deicing fluid of above-mentioned any one claim, it is characterized in that also can comprising multiple dyestuff, pigment.

7, a kind of method of producing deicing fluid is characterized in that comprising following step:

1. add hot water to 40 ℃-60 ℃;

2. take by weighing potassium bichromate, Sodium Nitrite by prescription, sodium tetraborate, Sodium hexametaphosphate 99 adds in the entry stirring and dissolving.

3. add glycol by the prescription consumption, mix;

4. add pigment, stirring and dissolving.

8, method according to claim 7 has bubble to produce when it is characterized in that stirring, can add the appropriate amount of defoamer tbp.