阅读说明：本技术 一种高性能改性浓缩型汽车防冻液及其制备方法 (High-performance modified concentrated automobile antifreeze fluid and preparation method thereof ) 是由 张媛 于丽丽 刘文军 于 2019-10-15 设计创作，主要内容包括：本发明提供一种高性能改性浓缩型汽车防冻液及其制备方法,属于防冻液技术领域。该防冻液,按照重量份数计,由以下组分组成：乙二醇50.7份,硅酸盐类复合添加剂26.3份,甘油18.0份,水溶性导电聚苯胺5.0份。本发明在防冻剂中添加水溶性导电聚苯胺,该水溶性导电聚苯胺和硅酸盐类复合添加剂复合使用,起到更好的防腐蚀作用,大大提高了防冻液的防腐蚀性能,克服了多金属冷却系统防腐蚀的难点,且水溶性导电聚苯胺具有稳定性好、节能环保高效的优点,投入使用会减缓产品对环境产生的影响,且由于他的高效性能,较少的用量就能达到极佳效果。(The invention provides a high-performance modified concentrated automobile antifreeze fluid and a preparation method thereof, belonging to the technical field of antifreeze fluids. The antifreezing solution consists of the following components in parts by weight: 50.7 parts of ethylene glycol, 26.3 parts of silicate composite additive, 18.0 parts of glycerol and 5.0 parts of water-soluble conductive polyaniline. According to the invention, the water-soluble conductive polyaniline is added into the antifreezing agent, and is used in combination with the silicate composite additive, so that a better anti-corrosion effect is achieved, the anti-corrosion performance of the antifreezing solution is greatly improved, the anti-corrosion difficulty of a multi-metal cooling system is overcome, the water-soluble conductive polyaniline has the advantages of good stability, energy conservation, environmental protection and high efficiency, the influence of the product on the environment can be reduced when the antifreezing solution is put into use, and due to the high efficiency performance of the water-soluble conductive polyaniline, a very good effect can be achieved with a small dosage.)

1. The high-performance modified concentrated automobile antifreeze fluid is characterized by comprising the following components in parts by weight:

2. the modified concentrated antifreeze fluid for automobiles of claim 1, wherein said water-soluble conductive polyaniline has a conductivity of 10^-1S/cm。

3. The modified concentrated antifreeze fluid for automobiles of claim 1, wherein said silicate-based complex additive is selected from the group consisting of Pasteur corporation, model G140 KSC.

4. The method for preparing the high-performance modified concentrated automobile antifreeze fluid according to claim 1, which comprises the following steps:

mixing ethylene glycol, silicate composite additive and glycerol until the mixture is uniform liquid, then adding water-soluble conductive polyaniline, and continuously stirring until the mixture is uniform liquid to obtain the high-performance modified concentrated automobile antifreeze fluid.

5. The method for preparing the high-performance modified concentrated automobile antifreeze fluid according to claim 4, wherein the mixing temperature is normal temperature, and the mixing time is 30-40 min.

6. The method for preparing the high-performance modified concentrated automobile antifreeze fluid according to claim 4, wherein the stirring temperature is normal temperature, and the stirring time is 30-40 min.

Technical Field

The invention belongs to the technical field of antifreeze, and particularly relates to a high-performance modified concentrated automobile antifreeze and a preparation method thereof.

Background

In order to improve the performance of automobiles, the automobile bodies of the automobiles are continuously improved, the air resistance is reduced by adopting a streamline design, the engine material is changed into an all-aluminum structure, the structural quality of the automobile bodies is reduced, the speed is improved, and the like. The automobile cooling system is an important component of an automobile, and because of the multi-metallization of an automobile structure, the difficulty is increased on the corrosion resistance of the automobile cooling system, namely the requirement on the anti-freezing solution in the cooling system is increased, and the corrosion resistance of the existing anti-freezing solution is not ideal.

Disclosure of Invention

The invention aims to solve the problem of poor corrosion resistance of the existing antifreeze solution, and provides a high-performance modified concentrated automobile antifreeze solution and a preparation method thereof.

The invention firstly provides a high-performance modified concentrated automobile antifreeze fluid which comprises the following components in parts by weight:

preferably, the water-soluble conductive polyaniline has a conductivity of 10^-1S/cm。

Preferably, the silicate-based composite additive is selected from the group consisting of basf, model G140 KSC.

The invention also provides a preparation method of the high-performance modified concentrated automobile antifreeze fluid, which comprises the following steps:

mixing ethylene glycol, silicate composite additive and glycerol until the mixture is uniform liquid, then adding water-soluble conductive polyaniline, and continuously stirring until the mixture is uniform liquid to obtain the high-performance modified concentrated automobile antifreeze fluid.

Preferably, the mixing temperature is normal temperature, and the mixing time is 30-40 min.

Preferably, the stirring temperature is normal temperature, and the stirring time is 30-40 min.

The invention has the advantages of

Compared with the prior art, the high-performance modified concentrated automobile antifreeze fluid adopts ethylene glycol as an antifreeze agent and silicate compound additives to play roles in resisting corrosion, adjusting pH value, defoaming and coloring; glycerol was used as a bulking agent; on the other hand, water-soluble conductive polyaniline is added into the antifreeze, and is compounded with silicate composite additives, so that a better anti-corrosion effect is achieved, the anti-corrosion performance of the antifreeze is greatly improved, the difficulty of corrosion prevention of a multi-metal cooling system is overcome, the water-soluble conductive polyaniline has the advantages of good stability, energy conservation, environmental protection and high efficiency, the influence of the product on the environment can be relieved when the water-soluble conductive polyaniline is put into use, and due to the high efficiency performance of the water-soluble conductive polyaniline, a very good effect can be achieved with a small using amount.

Drawings

FIG. 1 shows copper T₂Photographs of macroscopic corrosion morphology of the test piece after being soaked in F0 (figure a) and F5 (figure A) for 20 days;

FIG. 2 is a photograph of the macroscopic corrosion morphology of the copper cast iron HT300 test piece after being soaked in F0 (FIG. B) and F5 (FIG. B) for 20 d;

FIG. 3 is a photograph of the macroscopic corrosion morphology of the aluminum LY12 coupon after being soaked in F0 (FIG. C) and F5 (FIG. C) for 20 d;

FIG. 4 is a photograph of the macroscopic corrosion morphology of the steel 45# coupon after being soaked in F0 (FIG. D) and F5 (FIG. D) for 20D;

FIG. 5 shows copper T₂Microscopic corrosion morphology photographs of the test pieces after being soaked for 21d in F0 (figure a) and F5 (figure A);

FIG. 6 is a photograph of the macroscopic corrosion morphology of the copper cast iron HT300 test piece after being soaked in F0 (FIG. B) and F5 (FIG. B) for 21 d;

FIG. 7 is a photograph of the macroscopic corrosion morphology of the aluminum LY12 coupon after being soaked in F0 (FIG. C) and F5 (FIG. C) for 21 d;

FIG. 8 is a photograph of the macroscopic corrosion morphology of the steel 45# coupon after 21D immersion in F0 (FIG. D) and F5 (FIG. D);

FIG. 9 is a macroscopic corrosion morphology of cast aluminum alloy metal coupons after immersion for 7d in F0 (panel A) and F5 (panel a).

Detailed Description

The invention firstly provides a high-performance modified concentrated automobile antifreeze fluid which comprises the following components in parts by weight:

according to the invention, the water-soluble conductive polyaniline is a dark green uniform liquid, purchased from Jilin Zhengji science and technology Limited and has conductivityPreferably 10^-1S/cm。

According to the invention, the silicate-based composite additive is selected from the group consisting of the BASF corporation, model number G140 KSC.

The content of the water-soluble conductive polyaniline added in the invention is 5%, and when the dosage of the water-soluble conductive polyaniline is lower than or higher than 5%, the corrosion resistance of the invention is affected. The corrosion prevention mechanism of the conductive polyaniline is mainly that the conductive polyaniline forms a passivation film on the surface of metal through the electrochemical principle so that the metal is not corroded. If the concentration is lower than 5%, the concentration in the solution is not high enough to form an effective passive film, so that the optimal corrosion prevention effect cannot be achieved; if the concentration is higher than 5%, after polyaniline forms a layer of protective film on the metal surface, excessive accumulation is continued, but the metal quality is increased, and the corrosion inhibition effect tends to be stable and cannot be improved.

The invention also provides a preparation method of the high-performance modified concentrated automobile antifreeze fluid, which comprises the following steps:

mixing the glycol, the silicate composite additive and the glycerol at normal temperature, preferably mixing for 30-40min, stirring until the mixture is uniform liquid, then adding the water-soluble conductive polyaniline, preferably continuously stirring at normal temperature, and stirring for 30-40min until the mixture is uniform liquid to obtain the high-performance modified concentrated automobile antifreeze fluid.

The present invention is described in further detail below with reference to specific examples, in which the starting materials are all commercially available.