Long-acting anhydrous anti-freezing solution for automobile engine

A car engine, long-term technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., to achieve the effect of reducing emissions, prolonging service life and improving working conditions

Active Publication Date: 2020-10-30
深圳市百顺源节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the protective effect of corrosion inhibitors has strict selectivity. To achieve comprehensive protection of various metals in the cooling system, it is necessary to select and compound various corrosion inhibitors, which is the focus of the development of anhydrous antifreeze and difficulties

Method used

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  • Long-acting anhydrous anti-freezing solution for automobile engine
  • Long-acting anhydrous anti-freezing solution for automobile engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-13

[0023] Embodiment 1-13: the preparation of anhydrous antifreeze

[0024] Table 1: Anhydrous antifreeze formula (unit: %)

[0025]

[0026]

[0027] Preparation:

[0028] (1) Weigh propylene glycol and ethylene glycol, mix them as a base liquid, add octanoic acid to the base liquid and mix well, then add sebacic acid, stir to dissolve;

[0029] (2) Add 6-(N-allyl-1,1,2,2-tetrahydroperfluorodecyl)amine-2-mercapto-1,3,5- Sodium triazine-4-thiolate, heated to about 55°C, while stirring until completely dissolved;

[0030] (3) Add dipropylene glycol dimethyl ether to the mixed solution obtained in step (2), stir to mix evenly, and make a clear and transparent anhydrous antifreeze solution.

Embodiment 2

[0031] Embodiment 2: Corrosion test of anhydrous antifreeze

[0032] Using the glassware corrosion test method (SH / T 0085-2000), the test pieces made of red copper, brass, steel, cast iron, cast aluminum, and solder were weighed after polishing and cleaning, and then completely immersed in the air flow rate of In (100±10)mL / min antifreeze, at 88±2°C, test for (336±2)h. Three parallel test pieces were used for each type of antifreeze. After the test, the test piece was taken out, cleaned and weighed again, and the average mass loss before and after the test was recorded.

[0033] Table 2: Weight loss of test pieces (unit: mg)

[0034] Example Copper brass steel cast iron cast aluminum Solder 1 2.2 2.7 0.9 1.8 14.0 9.1 2 2.6 2.5 0.7 1.7 13.5 8.6 3 2.3 2.2 0.8 1.5 13.4 8.7 4 2.0 2.2 0.5 1.4 13.5 8.5 5 1.8 2.1 0.6 1.1 13.4 8.3 6 1.6 2.0 0.5 0.9 13.2 8.3 7 1.5 1.9 0.5 0.8 13.0 8.3 8 15....

Embodiment 3

[0035] Embodiment 3: Freezing point, boiling point and foam tendency test experiment of anhydrous antifreeze

[0036] After testing, the freezing point of the anhydrous mixed solution prepared in Example 1-11 is around -40°C (the testing method is SH / T0090-1991), and the boiling point is higher than 190°C, at about 198°C (the testing method is SH / T 0089 -1991). Carry out foam tendency research to all samples and find that the foam volume of the anhydrous antifreeze of embodiment 1-10 is all less than 150mL, and the foam disappearance time is all less than 5 seconds, but the anhydrous antifreeze prepared in embodiment 11 has a foam volume of 292ml , the foam disappearing time is greater than 10 seconds (the detection method is SH / T 0066-2002).

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Abstract

The invention provides a long-acting anhydrous cooling liquid for an automobile engine. The cooling liquid is prepared from the following components in percentage by mass: 92 to 95 percent of a base liquid, 2.2 to 3.7 percent of 6-(N-allyl-1, 1, 2, 2-tetrahydroperfluorodecyl) amino-2-sulfydryl-1, 3, 5-triazine-4-sodium mercaptide, 1.2 to 1.8 percent of medium-chain fatty acid, 2.5 to 3.5 percent of dipropylene glycol dimethyl ether and 0.002 to 0.004 percent of a coloring agent, wherein the basic liquid is propylene glycol or / and ethylene glycol, and the medium-chain fatty acid is a mixed acidof monobasic fatty acid and dibasic fatty acid. The corrosion inhibitor is used for preventing metal corrosion; all parts, capable of making contact with a medium, of the whole system can be protected; the heat conduction capacity of the cooling liquid is good, local overheating and friction force of parts are reduced, fuel oil is combusted more completely, the efficiency of the fuel oil is improved, and the oil amount is reduced.

Description

technical field [0001] The invention belongs to the technical field of engine antifreeze, and in particular relates to a long-acting anhydrous antifreeze for automobile engines and a preparation method thereof. Background technique [0002] Engine antifreeze is a coolant containing special additives. It is mainly used in liquid-cooled engine cooling systems. The antifreeze has excellent properties such as antifreezing in winter, anti-boiling in summer, anti-scale and anti-corrosion all year round. Common engine antifreezes include water-ethylene glycol type antifreeze and water-propylene glycol type antifreeze. However, the boiling point of water-containing antifreeze is usually not higher than 110°C, and there is a problem that it is easy to "boil the pot". Compared with water-containing antifreeze, anhydrous engine antifreeze has many advantages such as high boiling point, low vapor pressure, no scale, and fast temperature rise, and is gradually replacing traditional water...

Claims

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Application Information

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IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 柯鹏方娜方拓赵之棋潘锡军
Owner 深圳市百顺源节能科技有限公司
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