It is 50% pure water and 40% methanol plus 10% other substances, including pigments, preservatives, detergents, etc.
Development of "Four in One" Automobile Antifreeze Solution
2. 1 Selection of raw material components Ethylene glycol and methanol are mainly used for automobile antifreeze. Because ethylene glycol can lower the freezing point of water, its freezing point of 60% (v/v) aqueous solution is -49℃, which can be used as antifreeze for water tanks in airplanes and automobiles. Therefore, ethylene glycol is selected as the main raw material (industrial product) of antifreeze. 2.2 descaling agent in order to remove Ca ~ (2+) and Mg ~ (2+) from water.
Antifreeze formula brake fluid formula
Study on corrosion resistance of 1 antifreeze
There are many studies on the performance of antifreeze, but the corrosiveness of antifreeze itself to equipment has not attracted enough attention. This paper analyzes the corrosion mechanism and harm of components in water circulation system, expounds the composition of antifreeze and the method of determining the best formula according to the performance requirements, introduces the excellent performance, test results and field application of the developed antifreeze, and emphatically expounds the mechanism of adding composite corrosion inhibitor to antifreeze components.
2. Study on corrosion resistance of industrial calcium chloride antifreeze.
Industrial calcium chloride aqueous solution is corrosive as antifreeze. The corrosion resistance of common metals was studied by adding corrosion inhibitor to calcium chloride aqueous solution, and the best formula of this solution as antifreeze was determined. The results show that the corrosion resistance of calcium chloride solution can reach JIS and ASTM standards, and the freezing point of the solution is reduced, which broadens the application scope.
3. Research and development of efficient and environment-friendly automobile antifreeze.
The formula of ordinary antifreeze contains substances harmful to human body and environment, which belongs to middle and low-grade formula, while the application of organic acid antifreeze for high-grade cars is limited because of its high price. On the basis of using L series antifreeze imported from Japan, a new type of antifreeze with economy, high efficiency and environmental protection was developed. Through the Logistics Research Institute of the Ministry of Communications, etc.
4. Development of Dongfeng Citroen automobile antifreeze.
Traditional antifreeze contains substances harmful to human body and environment, so its application range is limited. A special antifreeze for Dongfeng Citroen automobile engine was developed by using organic carboxylic acid and inorganic corrosion inhibitor as corrosion inhibitors. The results of corrosion test and driving test of glassware show that it is made of efficient inorganic corrosion inhibitor.
5. Development of anti-corrosion calcium chloride antifreeze.
An inorganic composite corrosion inhibitor was added to calcium chloride antifreeze, and its corrosion resistance to common metals such as copper, aluminum alloy and cast iron was investigated. The results show that the anti-corrosion performance of calcium chloride antifreeze with compound corrosion inhibitor reaches JIS and ASTM standards, and the freezing point of antifreeze can be further reduced, which expands the application scope of antifreeze.
6. Corrosion inhibitors and stabilizers in automobile antifreeze
The patents of antifreeze in recent ten years are comprehensively introduced, and the main components and compounding methods of antifreeze for internal combustion engine cooling system are expounded. The performance and application of antifreeze we have studied are briefly introduced.
7. Study on multi-metal corrosion inhibitor in antifreeze.
In this paper, the high-temperature polymetallic corrosion inhibitor in antifreeze is studied, and the performance and application of the optimized composite corrosion inhibitor NSH-ⅱ are introduced. The antifreeze prepared with NSH-ⅱ corrosion inhibitor has a good protective effect on cast iron, steel, copper, brass, cast aluminum and solder. After ASTM D 1384 corrosion test, these six metals did not produce pitting corrosion.
8. Development of "four in one" automobile antifreeze.
Selection of raw materials 2. 1 Ingredients Ethylene glycol and methanol are mainly used as automobile antifreeze. Because ethylene glycol can lower the freezing point of water, the freezing point of its 60% (v/v) aqueous solution is -49℃, which can be used as antifreeze for water tanks in airplanes and automobiles. Therefore, ethylene glycol is selected as the main raw material (industrial product) of antifreeze. 2.2 descaling agent in order to remove Ca ~ (2+) and Mg ~ (2+) from water.
9. Study on antifreeze without nitrite corrosion inhibitor
According to ASTM test method, four groups of automobile antifreeze formulations without nitrite corrosion inhibitor were studied. The results show that heteropoly acid salts and carboxylate salts can be compounded with other corrosion inhibitors to replace harmful nitrite additives. The combined use of carboxylate, silicate and pyrrole compounds has obvious synergistic effect on corrosion inhibition of solder, aluminum and steel.
10, preparation of antifreeze
This paper mainly introduces the preparation, composition and additives of antifreeze. The possible quality problems of products and their solutions are expounded.
Study on optimization of high performance corrosion inhibitor 1 1 for automobile antifreeze.
12, study on anti-corrosion antifreeze and solid antifreeze for automobile water tanks
13, antifreeze performance and detection technology
14, development of efficient antifreeze for automobiles
16, Discussion on testing method of freezing point of antifreeze
17, anti-corrosion and anti-freezing formula
18, multifunctional and long-acting automobile antifreeze
19, hydrogen phosphate is used as corrosion inhibitor for antifreeze coolant and other functional fluids.
20. Optimization of corrosion inhibitor for high-performance automobile antifreeze.
Development of 2 1 and WB- 1 long-acting automobile antifreeze
22, automobile antifreeze metal corrosion resistance test
23, automobile antifreeze quality control
Patent information
24, antifreeze composition
25, antifreeze and its production method
26, fog, frost and antifreeze
27. Long-acting multifunctional antifreeze and its production method
28. Low carbon polyol water antifreeze for automobiles
29, antifreeze manufacturing method
30. Safe antifreeze and its production method
3 1, antifreeze of ethylene glycol engine cooling system diluted with tap water
32, waste antifreeze regeneration method
33, a new antifreeze
34. Anti-corrosion and anti-freezing composition and preparation method thereof
35, a multifunctional long-acting antifreeze
36. A new multifunctional antifreeze and its preparation method.
37. Multifunctional antifreeze
38, a long-acting antifreeze
39. Anti-scaling, flame retardant, non-corrosive and boiling resistant antifreeze and its production method
40. Aircraft and runway antifreeze
4 1, an antifreeze
42, truck antifreeze and its preparation method
43, low temperature resistant multifunctional antifreeze
44, multi-purpose antifreeze
45, anti-corrosion, antifreeze
Patent information of brake fluid
46. A synthetic brake fluid and its production method.
47, advanced automobile brake fluid and its preparation method
48, automobile brake fluid and its manufacturing method
49. A motor vehicle brake fluid and its production method.
50. A motor vehicle brake fluid and a production method thereof.
5 1, borate brake fluid and preparation method thereof
52, synthetic brake oil and its preparation method
53, high-speed automobile brake fluid and its production method
54, synthetic brake fluid and its preparation method
55. A preparation method of borate automobile hydraulic brake fluid.
56, new automobile brake fluid and its manufacturing process
57, hydraulic motor vehicle braking device bubble-free filling brake fluid method
Literature literature
58. Development of protective fluid for automobile braking system.
59, the development of borate brake fluid
60. Development of DOT5 _1Automobile Brake Fluid
Development of 6 1 borate automobile brake fluid
62. Discussion on the protective performance of borate automobile brake fluid
63, the development of motor vehicle brake fluid
64. Study on the mixing of synthetic brake fluid.
65, the study of synthetic brake fluid
66, the preparation of synthetic automobile brake fluid
67, the development of high boiling point brake fluid
68. Development of JG3 synthetic automobile brake fluid
Study on preparation and application of HZY2 synthetic brake oil base oil
70. Development of HJY JG_3 Grade Synthetic Automobile Brake Fluid
Development of 7 1, ester automobile brake fluid
72, new brake fluid performance and production technology
73, the development of new synthetic brake fluid
74. Research and development of automobile brake fluid
75, the research of automobile brake fluid