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Automobile anti-freezing fluid and preparation method thereof

A technology of automobile antifreeze and parts by weight, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of water-cooled engine cooling system blockage and leakage, formula system balance damage, precipitation and other problems, and achieves inhibition of inorganic salt scale. Accumulation, unique raw materials, fully responsive effects

Inactive Publication Date: 2017-05-10
QINGYANG DUNBO TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that a large number of inorganic salt-based corrosion inhibitors such as borax, triethanolamine, and sodium nitrite were used in automobile antifreeze. After 10,000 kilometers, it is easy to cause the balance of the formula system to be destroyed due to the uneven consumption of various additives, resulting in precipitation, and some water-insoluble inorganic salt scales will accumulate in the solution and produce precipitation, which will block the cooling system of the water-cooled engine Leakage or even damage

Method used

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  • Automobile anti-freezing fluid and preparation method thereof
  • Automobile anti-freezing fluid and preparation method thereof
  • Automobile anti-freezing fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of automobile antifreeze, is made up of the raw material of following parts by weight:

[0018] 55 parts of 1,3-propanediol, 0.1 part of phytic acid, 1 part of neopentyl glycol diglycidyl ether, 0.2 part of polyvinyl pyrrolidone, 0.5 part of thiocyanic acid, 0.02 part of water-based fluorescent green dye, salicylic acid 1 part of sodium phosphate, 0.1 part of butyl p-hydroxybenzoate, 1 part of lecithin, 2.5 parts of histidine, 1 part of water extract of vine fruit, 2 parts of ethanol extract of camphor tree leaf, 90 parts of water, and the balance is 0.2 %maleic anhydride;

[0019] A kind of automobile antifreeze preparation method, specifically comprises the following steps:

[0020] 1) Add 0.1 part of phytic acid, 0.2 part of polyvinylpyrrolidone, and 0.5 part of thiocyanuric acid to 90 parts of water in turn, mix them, put them in a water bath at a constant 40°C, stir for 20 minutes, and control the speed at 200r / min, filter, discard the precipitate, and ob...

Embodiment 2

[0024] A kind of automobile antifreeze, is made up of the raw material of following parts by weight:

[0025] 75 parts of 1,3-propanediol, 0.3 parts of phytic acid, 2 parts of neopentyl glycol diglycidyl ether, 0.5 parts of polyvinyl pyrrolidone, 1 part of thiocyanic acid, 0.05 parts of water-based fluorescent green dye, salicylic acid 2 parts of sodium phosphate, 0.2 parts of butyl p-hydroxybenzoate, 2 parts of lecithin, 4.5 parts of histidine, 2 parts of water extract of vine fruit, 5 parts of alcohol extract of camphor tree leaves, 125 parts of water, and the balance is 0.2 parts %maleic anhydride;

[0026] A kind of automobile antifreeze preparation method, specifically comprises the following steps:

[0027] 1) Add 0.3 parts of phytic acid, 0.5 parts of polyvinylpyrrolidone, and 1 part of thiocyanuric acid to 125 parts of water in turn, mix them, put them in a water bath at a constant 40°C, stir for 30 minutes, and control the speed at 250r / min, filter, discard the pre...

Embodiment 3

[0031] A kind of automobile antifreeze, is made up of the raw material of following parts by weight:

[0032] 60 parts of 1,3-propanediol, 0.2 parts of phytic acid, 1.5 parts of neopentyl glycol diglycidyl ether, 0.3 parts of polyvinyl pyrrolidone, 0.75 parts of thiocyanic acid, 0.03 parts of water-based fluorescent green dye, salicylic acid 1.5 parts of sodium phosphate, 0.15 parts of butyl p-hydroxybenzoate, 1.5 parts of lecithin, 3.5 parts of histidine, 1.5 parts of water extract of vine fruit, 3.5 parts of ethanol extract of camphor leaves, 115 parts of water, and the balance is 0.2 %maleic anhydride;

[0033] A kind of automobile antifreeze preparation method, specifically comprises the following steps:

[0034] 1) Add 0.2 parts of phytic acid, 0.3 parts of polyvinylpyrrolidone, and 0.75 parts of thiocyanuric acid to 115 parts of water, mix them in turn, put them in a water bath at a constant 40°C, stir for 25 minutes, and control the speed at 300r / min, filter, discard...

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Abstract

The invention discloses automobile anti-freezing fluid and a preparation method thereof, and belongs to the field of automotive maintenance. According to the invention, the anti-freezing fluid prepared by using 1,3-propylene glycol with low toxicity and high safety as a raw material and adding sodium salicylate, butyl p-hydroxybenzoate, polyvinylpyrrolidone, trithiocyanuric acid, 0.2% maleic anhydride and the like is reasonable in formula and unique in raw material; a freezing point of the anti-freezing fluid can reach 49 DEG C; a boiling point of the anti-freezing fluid can reach 225 DEG C; in a long-time operating process of a vehicle, the freezing point and the boiling point are changed a little; stability of the anti-freezing fluid is improved; the anti-freezing fluid reaches a long-acting effect.

Description

technical field [0001] The invention belongs to the field of automobile maintenance, in particular to an automobile antifreeze and a preparation method thereof. Background technique [0002] The engine cooling system of an internal combustion vehicle is a liquid-cooled closed cycle system consisting of a cylinder, a jacket, and a refrigerator. The working state of the cooling system directly affects the normal operation of the vehicle and the service life of the vehicle. Antifreeze is the cooling medium of the circulating cooling system of the internal combustion engine. The engine cooling system should use coolant, especially when the engine is used in a plateau cold (below 0°C) environment, it is necessary to use antifreeze, which is very beneficial to the use of the engine. [0003] At present, 95% of commercial antifreeze coolants are ethylene glycol water-based antifreeze fluids, but ethylene glycol has certain toxicity and is not easy to biodegrade, which is harmful t...

Claims

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Application Information

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IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 房世平秦国鹏杨忞蕊
Owner QINGYANG DUNBO TECH DEV CO LTD
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