阅读说明：本技术 一种水基防护蜡、制备方法及其应用 (Water-based protective wax, preparation method and application thereof ) 是由 桂成方 桂林 刘春花 于 2021-07-26 设计创作，主要内容包括：一种水基防护蜡,以重量百分比计,由以下原料制成：四甲基氢氧化铵22-24%,全精炼石蜡6-8%,微晶石蜡3-5%,氯化石蜡1-2%,硅烷偶联剂H-560 0.05-0.1%,硅烷偶联剂KH-550 0.05-0.1%,硫化猪油1.5-2.5%,乙烯基树脂11-14%,二苯甲酮0.5-1.0%,三苯基氯化硫鎓盐0.5-1.0%,余量为水。(The water-based protective wax is prepared from the following raw materials in percentage by weight: 22-24% of tetramethylammonium hydroxide, 6-8% of fully refined paraffin, 3-5% of microcrystalline wax, 1-2% of chlorinated paraffin, H-5600.05-0.1% of silane coupling agent, KH-5500.05-0.1% of silane coupling agent, 1.5-2.5% of vulcanized lard, 11-14% of vinyl resin, 0.5-1.0% of benzophenone, 0.5-1.0% of triphenyl sulfonium chloride salt and the balance of water.)

1. The water-based protective wax is characterized by being prepared from the following raw materials in percentage by weight: 22-24% of tetramethylammonium hydroxide, 6-8% of fully refined paraffin, 3-5% of microcrystalline wax, 1-2% of chlorinated paraffin, H-5600.05-0.1% of silane coupling agent, KH-5500.05-0.1% of silane coupling agent, 1.5-2.5% of vulcanized lard, 11-14% of vinyl resin, 0.5-1.0% of benzophenone, 0.5-1.0% of triphenyl sulfonium chloride salt and the balance of water.

2. The water-based protective wax of claim 1, wherein the fully refined paraffin wax is 64# fully refined paraffin wax.

3. The water-based protective wax of claim 1, wherein the microcrystalline wax is a # 300 microcrystalline wax.

4. The water-based protective wax of claim 1, wherein the vinyl brand: the content of the golden rubbing is more than or equal to 60 percent, and the specification is as follows: 901, origin: the Hebei corridor.

5. The water-based protective wax of claim 1, wherein the water is industrial pure water.

6. The method for preparing the water-based protective wax according to claim 1, which comprises the following steps in sequence: weighing the fully refined paraffin, the microcrystalline paraffin and the chlorinated paraffin, adding the weighed fully refined paraffin, the microcrystalline paraffin and the chlorinated paraffin into a conical flask, and heating a sample in an electric heating sleeve until the sample is completely dissolved; keeping the constant temperature water bath kettle at 70-90 deg.C, placing the completely dissolved sample in the constant temperature water bath kettle, opening the stirrer, and adding tetramethylammonium hydroxide while stirring; after the reaction is completed, adding water, heating the solution to 70-90 ℃, sequentially adding the vulcanized lard, the vinyl resin, the benzophenone, the triphenyl sulfonium chloride salt, the silane coupling agent KH-550 and the silane coupling agent KH-560, and uniformly stirring to obtain the catalyst.

7. Use of the water-based protective wax according to claim 1 for automobile protection.

Technical Field

The invention belongs to the field of metal surface treatment, and particularly relates to metal surface protective wax and a preparation method thereof.

Background

With the development of the automobile industry and the road traffic industry, the appearance decoration of automobiles and the service life of automobile bodies have become one of the main items of user and market competition. How to improve the corrosion resistance of automobiles and ensure the appearance decoration of automobiles and the service life of automobile bodies has attracted general attention of the automobile manufacturing industry. As is well known, SO in the atmosphere₂、NO₂And acid rain are major factors causing automobile corrosion, and wet and rainy rain is also a major factor causing automobile corrosion. The more the vehicle body corrodes with the deterioration of environmental conditions, especially the increase of salt spreading amount on the road surface in winter in cold areasThe more severe the situation. For example, since sixties, with the increase of salt sprinkling amount of snow melting on roads in north america and north and central europe, the regions gradually become the most severe regions where automobiles are corroded, and in order to solve the problem that automobile body corrosion is more and more severe, automobile protective wax is successively developed and used in eighties in canada and some countries in northern europe, and the use of the protective wax greatly improves the corrosion resistance of automobiles. In the manufacturing process of automobiles, the corrosion resistance of the automobiles is greatly improved by adopting cathodic electrophoretic coating, but for the positions of gaps, interlayers, cavities and the like formed by electric welding of automobile bodies and cabs, electrophoretic paint films hardly form, only phosphating films are formed, and paint films of some assembly holes and edges and corners are also thinner, so that the requirements of corrosion prevention process cannot be met. When the temperature and humidity of the environment change, water molecules in the air are easy to condense on the metal surface to form a very thin water film, and the water film is added with O in the atmosphere₂、C1^-、SO₂、NH₃Rust is generated under the action of pollutants such as fine dust, acid rain and the like, particularly at the bottoms of gaps, interlayers and cavities, air is not circulated, the cavities are in a wet state for a long time, and the rusting speed is very high. In the automobiles in humid areas such as south China and southwest China, if the inner cavity is not protected by protective wax, rusted yellow water flows out from the lower part of the automobile door after the automobile is used for 2-3 months. The corrosion of the vehicles used in the coastal areas and transported by the sea is more severe because of the influence of the sea atmosphere, and because of evaporation and wind waves, seawater atmospheres with different salt contents are formed in the coastal areas and the sea, and the smog in the seawater atmosphere forms a liquid film on the metal surface. When the temperature difference between day and night or seasonal climate change reaches the dew point, the condensation containing salt greatly accelerates the corrosion of metal, and if the automobile used in the environment is not protected by protective wax, large-area corrosion can occur within 2-5 months. With the development of environmental protection industry, dust-proof salt (CaCl) is sprayed in summer in industrially developed areas to improve the atmospheric environment of cities₂) (ii) a With the development of highway industry, in winter, in order to reduce traffic accidents, urban highways and expressways remove a large amount of snow melting salt (NaCl). The chloride ions of the dustproof salt and the snow melt salt dissolved in the rainwater and the snow water are very corrosive media,if the automobile used in the environment does not need protection of protective wax, the salt can greatly accelerate the corrosion of automobile gaps, interlayers, cavities and other parts. Therefore, in order to ensure the appearance of the automobile and the service life of the automobile body, it is necessary to use protective wax in the erodible portion of the automobile body.

Chinese patent CN201410627511.6 discloses an anti-rust oil for automobile steel plates, which is composed of the following raw materials in parts by weight: n68 mechanical oil 60-70, diniconazole 2-3, camphor oil 1-2, calcium palmitate 2-3, nonylphenol polyoxyethylene ether NP-40.5-1, antirust T7064-7, methyltriethoxysilane 1-2, 4' -dioctyl diphenylamine 1-2, tribasic lead sulfate 0.1-0.2, polyethylene wax 2-4, epoxidized triglyceride 2-4, tetramethylammonium hydroxide 0.4-1, rare earth film-forming hydraulic oil 15-20, wherein the rare earth film-forming hydraulic oil is added into the antirust oil: wherein, the propylene glycol phenyl ether is added into the modified gelatin system of the invention, so that the propylene glycol phenyl ether is completely absorbed by the gelatin system particles, thereby improving the coalescence property and stability of the system, and the self film-forming property is also enhanced in the system; the added rare earth ions can generate insoluble complex with OH < - > generated in the process of oxygen absorption corrosion on the surface of the metal base material, slow down the electrode reaction of corrosion and play a good slow-release effect. The patent belongs to an anti-rust oil system, wherein the time of a neutral salt spray test is 30-40h, which is far shorter than that of the invention.

Disclosure of Invention

The object of the present invention is to overcome the disadvantages of the prior art and to provide a water-based protective wax which is suitable for particularly harsh environments such as: marine transportation, high-humidity environment or outdoor storage, and has excellent rust resistance and corrosion resistance. The paint provides excellent protection for metal surfaces of mechanical equipment parts, machine tools, automobile parts, accessories, molds, pipelines and the like.

The water-based protective wax is prepared from the following raw materials in percentage by weight:

22 to 24 percent of tetramethyl ammonium hydroxide,

6 to 8 percent of fully refined paraffin,

3 to 5 percent of microcrystalline paraffin,

1 to 2 percent of chlorinated paraffin,

KH-5600.05-0.1% of silane coupling agent,

KH-5500.05-0.1% of silane coupling agent,

1.5 to 2.5 percent of vulcanized lard oil,

11 to 14 percent of vinyl resin,

0.5 to 1.0 percent of benzophenone,

0.5 to 1.0 percent of triphenyl sulfonium chloride salt,

the balance of water.

The total refined paraffin is 64# total refined paraffin, and the microcrystalline paraffin is 300# microcrystalline paraffin.

The vinyl resin brand: gold powder, the content is more than or equal to 60 percent, and the solid content is as follows: 80, specification: 901, origin: the Hebei corridor.

The water is industrial pure water.

The formula principle of the water-based protective wax is as follows: fully refined paraffin, microcrystalline paraffin, chlorinated paraffin and vinyl resin are taken as main film forming agents; the tetramethylammonium hydroxide reacts with water-insoluble fully refined paraffin, microcrystalline paraffin, chlorinated paraffin, vulcanized lard and vinyl resin to generate a water-soluble mixture, which is a key step for synthesizing the water-based protective wax; the silane coupling agent KH-560 and the silane coupling agent KH-550 play a role in bridging and crosslinking in the curing process of the protective wax, so that the protective wax film layer is more full and uniform and has better corrosion resistance; the vulcanized lard can enhance the toughness of the protective wax film layer; the benzophenone can greatly shorten the curing time of the aqueous protective wax film; the triphenyl sulfonium chloride salt can make the protective wax film layer more smooth and fine.

The preparation method of the water-based protective wax sequentially comprises the following steps: weighing the fully refined paraffin, the microcrystalline paraffin and the chlorinated paraffin, adding the weighed fully refined paraffin, the microcrystalline paraffin and the chlorinated paraffin into a conical flask, and heating a sample in an electric heating sleeve until the sample is completely dissolved; keeping the constant temperature water bath kettle at 70-90 deg.C (over-high temperature, smoke generated by the fully refined paraffin, microcrystalline paraffin and chlorinated paraffin, or under-low temperature, the fully refined paraffin, microcrystalline paraffin and chlorinated paraffin are not completely melted), placing the completely dissolved sample in the constant temperature water bath kettle, opening the stirrer, and adding tetramethylammonium hydroxide while stirring; and (3) after the reaction is completed, adding water, heating the solution to 70-90 ℃, sequentially adding the vulcanized lard, the vinyl resin, the benzophenone, the triphenyl sulfonium chloride salt, the silane coupling agent KH-550 and the silane coupling agent KH-560, and uniformly stirring to obtain the sample.

The invention also comprises the application of the water-based protective wax in automobile protection.

The water-based protective wax has the following beneficial effects: the water-based protective wax of the invention is suitable for particularly severe environments such as: marine transportation, high-humidity environment or outdoor storage, and has excellent rust resistance, corrosion resistance and storage stability. The paint provides excellent protection for metal surfaces of mechanical equipment parts, machine tools, automobile parts, accessories, molds, pipelines and the like.

Detailed Description

The following specific examples further illustrate the invention but are not intended to limit the invention thereto.

The total refined paraffin wax described in the examples is 64# total refined paraffin wax; the microcrystalline paraffin is No. 300 microcrystalline paraffin; vinyl resin brand: gold powder, the content is more than or equal to 60 percent, and the solid content is as follows: 80, specification: 901, origin: a Hebei corridor house; the water is industrial pure water.

Examples 1 to 7

Examples 1-7 the raw material ratios of the water-based protective wax are shown in table 1, the units are weight percentages.

TABLE 1

。

The preparation method of the water-based protective wax of the above embodiment sequentially comprises the following steps:

weighing the fully refined paraffin, the microcrystalline paraffin and the chlorinated paraffin, adding the weighed fully refined paraffin, the microcrystalline paraffin and the chlorinated paraffin into a conical flask, and heating a sample in an electric heating sleeve until the sample is completely dissolved; keeping the constant temperature water bath kettle at 80 ℃, putting the completely dissolved sample into the constant temperature water bath kettle, opening the stirrer, and adding tetramethylammonium hydroxide while stirring; after the reaction is completed, adding industrial pure water, heating the solution to 80 ℃, sequentially adding the vulcanized lard, the vinyl resin, the benzophenone, the triphenyl sulfonium chloride salt, the silane coupling agent KH-550 and the silane coupling agent KH-560, and uniformly stirring to obtain the sample.

Comparative examples 1 to 4

The raw material ratios of the protective wax of comparative examples 1 to 4 are shown in Table 2, and the units are weight percentages.

TABLE 2

。

The test results of the above examples and comparative examples are shown in tables 3 and 4, respectively, and the relevant indexes and detection methods are shown in table 5.

TABLE 3

。

TABLE 4

。

TABLE 5

。

According to the test results of the products of the above examples, the water-based antirust wax is convenient to use, simple to construct, high in drying speed, excellent in corrosion resistance and uniform, full and smooth in wax film layer; under natural environment, the base body can be protected from generating rust within 2 years.