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Multi-effect antirust composite additive and preparation method thereof
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A composite additive and coupling agent technology, applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of poisonous human body and environment, inability to apply multiple metals at the same time, accelerated metal corrosion, etc.
Inactive Publication Date: 2022-01-07
南京联智科技有限公司
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Abstract
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Problems solved by technology
[0003] At present, most metalworking fluids in the same industry use sodiumnitrite, and the unknown concentration of nitrite is more likely to accelerate metal corrosion, which cannot achieve the effect of rust prevention, and is also toxic to the human body and the environment, which will have adverse effects
And the current anti-rust additives cannot be applied to multiple metals at the same time, especially for different metals, copper, aluminum, zinc, carbon steel, etc.
Most of them are only for anti-rust function and cannot have multiple functions.
Method used
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Embodiment 1
[0019] Embodiment 1: the mass ratio of each component is:
[0020]
[0021]
[0022] The steps of the preparation method are: adding boric acid, adipic acid, sebacic acid, benzotriazole, thiadiazole, triethanolamine, monoethanolamine, and diglycolamine into the reaction tank in proportion, and heating under vacuum at 60-80°C Dehydrate and stir for 30-40 minutes; add dimer acid and higher fatty acid to the mixture in step 1 in proportion, and stir for 30 minutes at 40-50°C; cool to 40°C, add coupling agent and water, and add the mixture obtained in step 2 The mixture was stirred at 40° C. for 30 to 45 minutes.
Embodiment 2
[0024] The multi-effect antirust compound additive consists of the following components by weight percentage:
[0025]
[0026]
[0027] The preparation method comprises the following steps: adding boric acid, adipic acid, sebacic acid, benzotriazole, thiadiazole, triethanolamine, monoethanolamine and isobutanolamine into a reaction tank in proportion, and under vacuum conditions of 60-80°C Heating, dehydration and stirring for 30-40 minutes; adding dimer acid and higher fatty acid to the mixture in step 1 according to mass percentage, stirring at 40-50°C for 30 minutes;
[0028] Cool to 40°C, add coupling water to the mixture obtained in step 2, and stir at 40°C for 30-45 minutes.
Embodiment 3
[0030] The multi-effect antirust compound additive consists of the following components by weight percentage:
[0031]
[0032] The preparation method comprises the following steps: adding boric acid, adipic acid, sebacic acid, benzotriazole, thiadiazole, triethanolamine, monoethanolamine and isobutanolamine into a reaction tank in proportion, and under vacuum conditions of 60-80°C Heating, dehydration and stirring for 30-40 minutes; adding dimer acid and higher fatty acid to the mixture in step 1 according to mass percentage, stirring at 40-50°C for 30 minutes;
[0033] Cool to 40°C, add coupling water to the mixture obtained in step 2, and stir at 40°C for 30-45 minutes.
[0034]
[0035] From Table 1, it can be seen that when no anti-rust additive is used, the pH value is higher, the corrosion is easier, the anti-rust time is shorter, and the maximum non-seizing load is smaller; when ordinary anti-rust agents are used, the pH value is slightly lower , the anti-rust t...
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Abstract
The invention relates to a multi-effect antirust composite additive and a preparation method thereof, and the multi-effect antirust composite additive comprises boric acid, sebacic acid, adipic acid, dimer acid, benzotriazole, thiadiazole, monoethanolamine, triethanolamine, special amine, higher fatty acid, a coupling agent and the balance of water. The preparation method of the multi-effect antirust composite additive comprises the following steps: (1) proportionally adding boric acid, sebacic acid, adipic acid, benzotriazole, thiadiazole, triethanolamine, monoethanolamine and special amine into a reaction tank for acid-base reaction dehydration; (2) adding dimer acid and higher fatty acid in proportion; and (3) adding the coupling agent and water to obtain the multi-effect antirust composite additive. The multi-effect anti-rust composite additive does not contain nitrite, can provide anti-rust protection capability for copper, aluminum, zinc, carbon steel and the like, and has certain lubricity and extreme pressure property.
Description
technical field [0001] The invention relates to a multi-effect antirust composite additive and a preparation method thereof, belonging to the technical field of organic chemistry. Background technique [0002] Water-based metalworking fluids usually have good lubricity, cooling and anti-rust and anti-corrosion properties in the processing process. In the process of processing, there is usually better protection of the working fluid, but there is no protection of the working fluid between the processes, and the metal workpiece is more Susceptible to corrosion by environmental influences. The first reason is that the oxygen and humidity in the air will cause oxides to form on the metal surface and cause corrosion. The second is that the additives in the cutting fluid remaining on the workpiece, especially some extreme pressure additives, contain sulfides, chlorides and surface corrosion. Active agents such as ethyleneoxide and propylene oxide can accelerate the corrosion of ...
Claims
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Application Information
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