KR102148738B1 - manufacturing method of volatile corrosion inhibitor film - Google Patents

Abstract

The method of manufacturing a vaporizable rust preventive film of the present invention is after pulverizing each of sodium benzoate, hydroquinone, potassium sorbate and zinc oxide, and then pulverized sodium benzoate, hydroquinone, sorbic acid. A first mixing and stirring step (S10) in which potassium, zinc oxide, and octanoic acid are mixed and stirred to form a first mixture, and silicon dioxide (SiO ₂ ), polyethylene wax, and stear are used in the first mixture. Consists of a second mixing and stirring step (S20) of mixing and stirring zinc acid and polyethylene resin to form a second mixture, and an extrusion step (S30) of extruding the second mixture by a film extruder. do.

Description

Manufacturing method of volatile corrosion inhibitor film {manufacturing method of volatile corrosion inhibitor film}

The present invention relates to a method for manufacturing a vaporizable rust preventive film, in particular, without using benzotriazole, which is harmful to the human body when inhaled or in contact with the skin, and using a vaporizable rust inhibitor, antioxidant, and negative electrode inhibitor made of food additives or food extracts. It is safe even when contacted, does not cause environmental pollution, and relates to a method of manufacturing a vaporizable rust prevention film excellent in rust prevention function.

As the metal industry develops, sales of metal products such as ferrous or nonferrous metals are increasing, and these metal products are packaged and stored or transported. When transporting or storing metal products, metal products are easily corroded, and industrial losses are increasing.

In order to prevent the occurrence of corrosion of such metal products, oil, grease, and paint were used, metal products were vacuum-packed, or vaporizable rust preventive films were used.

Conventional vaporizable rust preventive film is manufactured by mixing and extruding a vaporizable rust preventive agent and polyethylene resin, and when packaging metal products using this vaporizable rust preventive film, it is possible to prevent rust of metal products without applying grease or rust preventive oil. Even metal products that are difficult to apply can be prevented from rusting to minute gaps that cannot be treated with general rust inhibitors due to the penetration of vaporized gas into the interior.

As a prior art of such a vaporizable rust preventive film, Korean Patent Registration No. 10-0986695 "Method for manufacturing a biochemically degradable vaporizable rust preventive film" (registration date: 2010.10.04) and Korean Patent No. 10-1220879 "Silver, copper and Biochemically degradable vaporizable rust preventive film manufacturing method for aluminum products" (Registration Date: 2013.010.04), Korean Patent Registration No. 10-0598152 "Vapable rust preventive film and its manufacturing method" (Registration Date: 2006.06.30), published in Korea Patent Publication No. 10-2016-0022547 "A vaporizable anti-rust film and its manufacturing method" (published date: 2016.03.02) is disclosed.

In the case of the conventional prior art vaporizable rust preventive film, benzotriazol is used as a rust inhibitor for vaporizable rust prevention, but benzotriazole is a material that does not biodegrade, and the harmfulness to the environment continues to emerge. It corresponds to substances registered as preliminary substances regulated by the European Union's REACH (Registration, Evaluation, Authorization & Restriction of Chemicals). Since it is harmful to the human body when inhaled or in contact with the skin, it is necessary to limit the use of benzotriazole.

Korean Patent Registration No. 10-0986695 "Method for manufacturing biochemically degradable vaporizable rust preventive film" (Registration date: 2010.10.04) Registered Korean Patent No. 10-1220879 "Method of manufacturing biochemically degradable vaporizable rust preventive film for silver, copper and aluminum products" (Registration date: 2013.010.04) Republic of Korea Patent Registration No. 10-0598152 "Vapable anti-rust film and its manufacturing method" (Registration date: 2006.06.30) Republic of Korea Patent Publication No. 10-2016-0022547 "Vapable anti-rust film and its manufacturing method" (Publication date: 2016.03.02)

An object of the present invention is to avoid using benzotriazole, which is harmful to the environment and the human body, and by using a vaporizable rust inhibitor, antioxidant, and negative electrode inhibitor made of food additives or food extracts, it is safe even if it comes into contact with the human body, and does not cause environmental pollution. It is to provide a method of manufacturing a vaporizable rust prevention film with excellent rust prevention function.

In order to achieve the above object, the method of manufacturing a vaporizable rust preventive film of the present invention is prepared by pulverizing sodium benzoate, hydroquinone, potassium sorbate, and zinc oxide, respectively, in the method of manufacturing a vaporizable rust preventive film preventing corrosion of iron or non-ferrous metals. Then, a first mixing and stirring step of forming a first mixture by mixing and stirring the pulverized sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid; A second mixing and stirring step of forming a second mixture by mixing and stirring silicon dioxide, polyethylene wax, zinc stearate, and polyethylene resin with the first mixture: and an extrusion step of extruding the second mixture by a film extruder, , The second mixture is 180 to 220 parts by weight of sodium benzoate, 80 to 120 parts by weight of hydroquinone, and 80 to 120 parts by weight of potassium sorbate based on 1000 parts by weight of the polyethylene resin. Parts, the zinc oxide is 40 to 60 parts by weight, the octanoic acid is 80 to 120 parts by weight, the silicon dioxide is 40 to 60 parts by weight, the polyethylene wax is 120 to 180 parts by weight It is a part by weight, and the zinc stearate is characterized in that 120 parts by weight to 180 parts by weight.

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The method for manufacturing a vaporizable rust preventive film of the present invention is to produce a vaporizable rust preventive film using a vaporizable rust preventive agent, antioxidant, and negative electrode inhibitor composed of food additives or food extracts, and thus does not use benzotriazole harmful to the environment and human body. It is safe even in contact, does not cause environmental pollution, and can prevent corrosion of ferrous and non-ferrous metals.

1 is a process flow chart of a method for producing a vaporizable rust preventive film of the present invention.
2 is a rust generation grade table showing the degree of corrosion according to the rust generation grade for mild steel and carbon steel.

Hereinafter, with reference to the accompanying drawings will be described in detail the method for producing a vaporizable rust preventive film of the present invention.

As shown in FIG. 1, the method for manufacturing a vaporizable rust preventive film of the present invention comprises pulverizing sodium benzoate, hydroquinone, potassium sorbate, and zinc oxide, respectively, and then pulverized. A first mixing and stirring step (S10) of forming a first mixture by mixing and stirring sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid, and silicon dioxide (SiO ₂ ), polyethylene in the first mixture. The second mixing and stirring step (S20) of forming a second mixture by mixing and stirring the wax (Polyethylene Wax), zinc stearate and polyethylene resin (S20), and extruding the second mixture by a film extruder It consists of an extrusion step (S30).

In addition, in the second mixture, sodium benzoate is 180 to 220 parts by weight, hydroquinone is 80 to 120 parts by weight, and potassium sorbate is 80 to 120 parts by weight, based on 1000 parts by weight of the polyethylene resin, Zinc oxide is 40 to 60 parts by weight, octanoic acid is 80 to 120 parts by weight, silicon dioxide is 40 to 60 parts by weight, the polyethylene wax is 120 to 180 parts by weight, stearic acid Zinc is composed of 120 parts by weight to 180 parts by weight.

The operation of the method for producing a vaporizable rust preventive film according to the present invention according to the above configuration is as follows.

As shown in Fig. 1, the first mixing and stirring step (S10) includes 180 parts by weight to 220 parts by weight of sodium benzoate, 80 parts by weight to 120 parts by weight of hydroquinone, and 80 parts by weight to 120 parts by weight based on 1000 parts by weight of the polyethylene resin. Parts by weight of potassium sorbate and 40 to 60 parts by weight of zinc oxide were pulverized in 200 mesh to 350 mesh, and the pulverized sodium benzoate, hydroquinone, potassium sorbate and zinc oxide and octanoic acid were mixed and stirred. A first mixture is formed.

The sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid are all food additives or food extracts that are harmless to the human body.

Sodium benzoate and octanoic acid are used as vaporizable rust inhibitors, and sodium benzoate contributes to rust prevention of nonferrous metals relatively compared to ferrous metals, and octanoic acid contributes to rust prevention of ferrous metals relatively than nonferrous metals.

Hydroquinone and potassium sorbate are used as antioxidants that block oxidation reactions. Hydroquinone contributes to rust prevention of nonferrous metals relatively compared to ferrous metals, and potassium sorbate contributes to rust prevention of nonferrous metals and ferrous metals, especially sorbic acid. Potassium also has a function of absorbing oxygen, and zinc oxide is used as a negative electrode inhibitor to prevent corrosion, and it contributes to rust prevention of nonferrous metals relatively compared to ferrous metals.

That is, sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid composed of the first mixture are all for rust prevention of iron or non-ferrous metals, and when formed below the appropriate weight, rust prevention power is reduced, and appropriate weight If it is larger, the balance of rust prevention may be broken and rust may occur.

The second mixing and stirring step (S20) includes 40 parts by weight to 60 parts by weight of silicon dioxide, 120 parts by weight to 180 parts by weight of polyethylene wax and 120 parts by weight to 180 parts by weight based on 1000 parts by weight of polyethylene resin in the first mixture configured as described above. A second mixture is formed by mixing parts by weight of zinc stearate and polyethylene resin.

Silicon dioxide is a desiccant that absorbs moisture, and when the desiccant is larger than an appropriate weight, the physical properties of the vaporizable rust preventive film are weakened.

Polyethylene wax is an emulsifier, and when it is less than the appropriate weight, mixing of the first mixture and the polyethylene resin is not performed smoothly, and when it is larger than the appropriate weight, the vaporizable rust preventive film becomes too flexible and the bursting strength or tensile strength is good. I can't.

Zinc stearate is a dispersant and is used to facilitate mixing and stirring of the first mixture and the second mixture.

In the extrusion step (S30), the second mixture is extruded to a thickness of approximately 0.1 mm in a temperature range of 170°C to 190°C using a film extruder by a conventional method to prepare a vaporizable rust prevention film.

Each sample was prepared as follows in order to measure the rust prevention experiment according to the composition ratio of the vaporizable rust prevention film prepared by the present invention.

Sample 1

Using only 200 g of sodium benzoate as the first mixture, 200 g of crushed sodium benzoate, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed and stirred at a high speed for 10 minutes at a temperature of 50°C to prepare the second mixture. After forming, the second mixture was extruded to a thickness of approximately 0.1 mm at a temperature range of 170°C to 190°C using a film extruder to prepare a vaporizable rust preventive film of Sample 1.

Sample 2

200 g of sodium benzoate and 100 g of octanoic acid were used as the first mixture. After stirring the pulverized 200 g of sodium benzoate and 100 g of octanoic acid to form a first mixture, 150 g of polyethylene wax and 150 g of stearic acid were added to the first mixture. Zinc and 1000g of polyethylene resin are mixed and stirred at a high speed for 10 minutes at a temperature of 50℃ to form a second mixture, and the second mixture is extruded to a thickness of approximately 0.1mm at a temperature range of 170℃ to 190℃ using a film extruder. Thus, a vaporizable rust prevention film of Sample 2 was prepared.

Sample 3

200 g of sodium benzoate and 100 g of octanoic acid were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture, and 200 g of pulverized sodium benzoate and 100 g of octanoic acid were stirred to form a first mixture, In the first mixture, 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed and stirred at a high speed for 10 minutes at a temperature of 50°C to form a second mixture, and the second mixture Was extruded to a thickness of approximately 0.1 mm in a temperature range of 170° C. to 190° C. using a film extruder to prepare a vaporizable rust preventive film of Sample 3.

Sample 4

As the first mixture, 100 g of hydroquinone and 100 g of potassium sorbate were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture, and the pulverized 100 g of hydroquinone and 100 g of potassium sorbate were stirred to form a first mixture. After that, 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed and stirred at a high speed for 10 minutes at a temperature of 50° C. to form a second mixture, The second mixture was extruded to a thickness of approximately 0.1 mm at a temperature range of 170° C. to 190° C. using a film extruder to prepare a vaporizable rust prevention film of Sample 4.

Sample 5

50 g of zinc oxide, a negative electrode inhibitor, was used as the first mixture, and 50 g of silicon dioxide was added to the second mixture, and 50 g of pulverized zinc oxide was added to 50 g of silicon dioxide, 150 g of polyethylene wax, and 150 g of stearic acid. Zinc and 1000g of polyethylene resin were mixed and stirred at a high speed for 10 minutes at a temperature of 50℃ to form a second mixture, and the second mixture was applied to a thickness of approximately 0.1mm in a temperature range of 170℃ to 190℃ using a film extruder. Extruded to prepare a vaporizable rust preventive film of Sample 5.

Sample 6

As the first mixture, 200 g of sodium benzoate, 100 g of hydroquinone and 100 g of antioxidant, 100 g of potassium sorbate were used, and 50 g of silicon dioxide was added to the second mixture, and 200 g of pulverized sodium benzoate, 100 g of hydroquinone and 100 g of sorbic acid were used. After stirring potassium to form the first mixture, 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed at a high speed for 10 minutes at a temperature of 50°C. After stirring to form a second mixture, the second mixture was extruded to a thickness of approximately 0.1 mm in a temperature range of 170°C to 190°C using a film extruder to prepare a vaporizable rust preventive film of Sample 6.

Sample 7

200 g of sodium benzoate and 50 g of zinc oxide as a negative electrode inhibitor were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture, and 200 g of pulverized sodium benzoate and 50 g of zinc oxide were stirred to form a first mixture. After that, 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed and stirred at a high speed for 10 minutes at a temperature of 50° C. to form a second mixture, The second mixture was extruded to a thickness of approximately 0.1 mm in a temperature range of 170° C. to 190° C. using a film extruder to prepare a vaporizable rust preventive film of Sample 7.

Sample 8

200 g of sodium benzoate, 100 g of hydroquinone as an antioxidant, 100 g of potassium sorbate, and 50 g of zinc oxide as a negative electrode inhibitor were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture, and 200 g of pulverized sodium benzoate and 100 g Hydroquinone, 100 g of potassium sorbate and 50 g of zinc oxide were stirred to form a first mixture, and then 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene were stirred in the first mixture. The resin is mixed and stirred at high speed for 10 minutes in a temperature range of 50°C to form a second mixture, and the second mixture is extruded to a thickness of approximately 0.1mm at a temperature range of 170°C to 190°C using a film extruder. To prepare an anti-rust film.

Sample 9

As the first mixture, 200 g of sodium benzoate, 100 g of octanoic acid, 100 g of hydroquinone, an antioxidant, 100 g of potassium sorbate, and 50 g of zinc oxide, a negative electrode inhibitor, were used.The pulverized 200 g of sodium benzoate, 100 g of hydroquinone and 100 g of potassium sorbate were used. After stirring 50g of zinc oxide and 100g of octanoic acid to form a first mixture, 150g of polyethylene wax, 150g of zinc stearate, and 1000g of polyethylene resin were added to the first mixture for 10 minutes at a temperature of 50℃. A second mixture was formed by high-speed mixing and stirring, and the second mixture was extruded to a thickness of approximately 0.1 mm in a temperature range of 170°C to 190°C using a film extruder to prepare a vaporizable rust preventive film of Sample 9.

Sample 10

As the first mixture, 200 g of sodium benzoate and 100 g of octanoic acid, 100 g of hydroquinone as an antioxidant, 100 g of potassium sorbate, and 50 g of zinc oxide as a negative electrode inhibitor were used, and 50 g of silicon dioxide was added to the second mixture. A first mixture was formed by stirring sodium benzoate, 100 g of hydroquinone, 100 g of potassium sorbate, 50 g of zinc oxide, and 100 g of octanoic acid, and then 50 g of silicon dioxide, 150 g of polyethylene wax, and 150 g of the first mixture. Zinc stearate and 1000 g of polyethylene resin are mixed and stirred at a high speed for 10 minutes at a temperature of 50°C to form a second mixture, and the second mixture is used in a temperature range of 170°C to 190°C, approximately 0.1 Extruded to a thickness of mm to prepare a vaporizable rust preventive film of Sample 10.

Table 1 below shows the comparative results of the rust prevention tests for various metal specimens using the vaporizable rust prevention films of Samples 1 to 10.

Sample film / metal type Carbon steel Copper Galvanized steel sheet aluminum Sample 1 Ⅹ Ⅹ Ⅹ Ⅹ Sample 2 △ Ⅹ Ⅹ Ⅹ Sample 3 △ Ⅹ Ⅹ Ⅹ Sample 4 Ⅹ △ △ Ⅹ Sample 5 Ⅹ x △ △ Sample 6 Ⅹ △ △ △ Sample 7 Ⅹ △ △ △ Sample 8 Ⅹ ○ ○ ○ Sample 9 △ ○ ○ ○ Sample 10 ○ ○ ○ ○

○: No rust, Ⅹ: rust, △: within 5% of rust

In the rust prevention comparative experiment shown in Table 1 above, each metal specimen of carbon steel, copper, galvanized steel sheet, and aluminum was sealed and packaged with a vaporizable rust prevention film according to Samples 1 to 10, and then 30 ml of distilled water was added to a 500 ml beaker. The metal specimens sealed with the samples 1 to 10 were put in the site, and the beaker inlet was sealed with a wrap film, and then, 1 cycle at 40 degrees Celsius, 16 hours at room temperature for 8 hours, and 45 cycles, and then the metal specimens. This is the result of observing whether or not rust has occurred.

As can be seen from Table 1 above, in the case of the vaporizable rust preventive film of Sample 1, there is no rust preventive effect on all metals, and in the case of the vaporizable rust preventive film of Samples 2 and 3, there is some rust prevention effect on carbon steel, which is a ferrous metal, but nonferrous metals have There is no rust prevention effect, in the case of the vaporizable rust prevention film of Sample 4, there is no rust prevention effect on carbon steel and aluminum, the vaporization rust prevention film of Sample 5 has no rust prevention effect on carbon steel and copper, and the vaporization rust prevention film of Sample 6 and Sample 7 Except for carbon steel, there is a certain degree of rust prevention effect on the other metals, in the case of the vaporizable rust prevention film of Sample 8, the rust prevention effect is good for the rest of the metals except for carbon steel, and the vaporization rust prevention effect of sample 9 is good to some extent on carbon steel. , It can be seen that the rust prevention effect is good for the rest of the metals, and Sample 10 shows good rust prevention effect for all metals.

Therefore, it can be seen that the vaporizable rust preventive film of Sample 10 prepared according to the present invention is excellent in the rust preventive effect of ferrous and nonferrous metals.

Table 2 below shows the comparative results of the rust prevention test for mild steel using the vaporizable rust prevention film of Samples 1 to 10.

Sample film Rust generation grade Sample 1 Grade 0 Sample 2 Grade 2 Sample 3 Grade 2 Sample 4 Grade 0 Sample 5 Grade 0 Sample 6 Grade 0 Sample 7 Grade 0 Sample 8 Grade 0 Sample 9 Grade 2 Sample 10 Grade 3

In the rust prevention test shown in Table 2 above, two vaporizable rust preventive films of Samples 1 to 10 were mounted in a 1000 ml Erlenmeyer flask, a mild steel specimen was assembled on a rubber stopper, and left at room temperature for 20 hours. This is the result of observing whether or not rust is rusted after 2 hours after adding 10 ml of a solution of glycerol and distilled water in a ratio of 1:2, put in a thermostat at 40℃ after 2 hours.

In Table 2, the vaporizable rust prevention films of Sample 1 and Samples 4 to 8 all have a rust generation grade of grade 0, and all of the vaporizable rust prevention films of Sample 2, Sample 3 and Sample 9 have a rust generation grade of grade 2, and the present invention It can be seen that the vaporizable rust prevention film of Sample 10 according to the rust generation grade is grade 3.

That is, as shown in the rust generation grade table showing the degree of corrosion according to the rust generation grade of FIG. 2, the rust generation grade of grade 0 means the grade in the case of more than 30% corrosion, and the grade 1 is 5 ∼30% of corrosion occurs, grade 2 means 5% or less when corrosion occurs, and grade 3 means no corrosion at all.

Accordingly, the rust generation grade of the vaporizable rust preventive film of Sample 10 prepared according to the present invention is 3, and corrosion does not occur at all in mild steel metals having a carbon content of less than 0.3%.

Table 3 below shows the comparative results of the rust prevention tests for carbon steel using the vaporizable rust prevention films according to Samples 1 to 10.

Sample film Rust generation grade Sample 1 Grade 0 Sample 2 Grade 2 Sample 3 Grade 2 Sample 4 Grade 0 Sample 5 Grade 0 Sample 6 Grade 0 Sample 7 Grade 0 Sample 8 Grade 0 Sample 9 Grade 2 Sample 10 Grade 3

In the rust-prevention test shown in Table 3, two vaporizable rust-preventing films of Samples 1 to 10 were mounted in a 1000 ml Erlenmeyer flask, and a carbon steel specimen (DIN EN-10025) was assembled on a rubber stopper, and left at room temperature for 20 hours. After that, 10 ml of a solution obtained by mixing glycerol and distilled water in a ratio of 1:2 was added and placed in a thermostat at a temperature of 40° C. 2 hours later, and after 2 hours, the rust was observed.

In Table 3, all of the vaporizable rust preventive films of Sample 1 and Samples 4 to 8 have a rust generation grade of grade 0, and all of the vaporizable rust prevention films of Sample 2, Sample 3 and Sample 9 have a rust generation grade of grade 2, and the present invention It can be seen that the vaporizable rust prevention film of Sample 10 according to the rust generation grade is grade 3.

Therefore, when the vaporizable rust preventive film of Sample 10 prepared according to the present invention is used for carbon steel, the rust generation grade is 3, and corrosion does not occur at all.

The following Table 4 shows the comparative results of the rust prevention tests for copper and carbon steel by the Craig test method for the vaporizable rust prevention films of Samples 1 to 10.

Sample film Copper Carbon steel Sample 1 Ⅹ Ⅹ Sample 2 Ⅹ ○ Sample 3 Ⅹ △ Sample 4 Ⅹ Ⅹ Sample 5 Ⅹ Ⅹ Sample 6 Ⅹ Ⅹ Sample 7 △ Ⅹ Sample 8 △ △ Sample 9 △ ○ Sample 10 ○ ○

○: No rust, Ⅹ: rust, △: within 5% of rust

In the rust-prevention comparison experiment shown in Table 4, each of the vaporizable rust-preventing films (6.5cmx15cm) of Samples 1 to 10 were mounted in a 500 mL beaker using lucite, and then 30 mL of distilled water was added and sealed to a thermostat at 60 degrees Celsius. Put it in for 40 minutes, take it out, cool it at room temperature for 30 minutes, put the copper and carbon steel metal specimens in lucite in a beaker, put it in a thermostat at 60 degrees Celsius for 1 hour, and then leave it at room temperature for 30 minutes. It is the result of observing the occurrence or not.

As can be seen from Table 4 above, in the case of the vaporizable rust preventive films of Sample 1 and Samples 4 to 6, both copper and carbon steel have no rust prevention effect, and in the case of the vaporizable rust preventive films of Samples 2 and 3, copper It was found that rust was generated but no rust rust was generated on carbon steel, and in the case of the vaporizable rust prevention film of Sample 7, rust rust was generated on carbon steel, but rust rust was not generated on copper, and samples 8 to 10 showed that both copper and carbon steel had good rust rust effects. I can.

In the case of the vaporizable rust preventive film of Sample 10 prepared according to the present invention, it can be seen that the rust preventive effect on copper and carbon steel is superior to that of the other samples.

As can be seen by the rust prevention experiments according to Tables 1 to 4 as described above, according to the present invention, a first mixture was formed with sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid, and silicon dioxide in the first mixture , Polyethylene wax, zinc stearate, and polyethylene resin are mixed and stirred to form a second mixture, and the vaporizable rust preventive film of Sample 10 is excellent for all metals such as ferrous and nonferrous metals without using benzotriazole, which is harmful to the human body. It can be seen that it has anti-rust.

Claims (2)

In the method for producing a vaporizable rust preventive film preventing corrosion of ferrous or nonferrous metals,
After pulverizing sodium benzoate, hydroquinone, potassium sorbate and zinc oxide, respectively, the pulverized sodium benzoate, hydroquinone, potassium sorbate, zinc oxide, and octanoic acid are mixed and stirred to form a first mixture (S10). );
A second mixing and stirring step (S20) of mixing and stirring silicon dioxide, polyethylene wax, zinc stearate, and polyethylene resin to the first mixture to form a second mixture: and
And an extrusion step (S30) of extruding the second mixture by a film extruder,
The second mixture is 180 to 220 parts by weight of sodium benzoate, 80 to 120 parts by weight of hydroquinone, and 80 to 120 parts by weight of potassium sorbate based on 1000 parts by weight of the polyethylene resin. And, the zinc oxide is 40 to 60 parts by weight, the octanoic acid is 80 to 120 parts by weight, the silicon dioxide is 40 to 60 parts by weight, and the polyethylene wax is 120 to 180 parts by weight Parts, wherein the zinc stearate is 120 parts by weight to 180 parts by weight. delete

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