First, the development of vapor-phase anti-rust plastic film
Vapor-phase anti-rust plastic film (abbreviated as VCIF) is a type of protective inner packaging material made by adding a vapor phase inhibitor (VCI) to a plastic film in a certain manner. At present, Japan and South Korea all produce VCIF products.
Second, vapor phase rust-proof plastic thin protective mechanism
VCIF is a plastic film containing a vapor phase corrosion inhibitor and thus has the dual role of a vapor phase corrosion inhibitor and a plastic film.
The key technology and main role of VCIF is the role of vapor phase corrosion inhibitor technology. The VCI that exists in the plastic film is combined with plastic with weak binding force. Under the natural environment of temperature and humidity, the VCI vaporizes slowly with a certain vapor pressure, and the inhibitor vapor slowly fills the packaging space and is adsorbed on the metal surface. , And react under the water vapor to release corrosion-inhibiting groups. This corrosion-inhibiting group acts as an anti-corrosion agent by changing the pH of the metal surface, forming a hydrophobic film on the surface and forming a dense and purified film with the metal.
In addition, another feature of VCIF is the high barrier property of plastic film. As a VCI carrier, the plastic films include polyethylene, spear propylene, ethylene, vinyl alcohol copolymer (EVOH), etc. The film can effectively prevent corrosive media such as hydrogen sulfide, sulfur dioxide, carbon dioxide, water vapor, salt spray, etc. at a certain thickness. Oxygen, dust, etc. enter the packaging space, thereby providing shielding protection.
Third, the characteristics of vapor phase rust-proof plastic film
1.VCI steam is not permeated by holes, so it is most suitable to be made of unshaped, non-planar and complex surface parts and combinations that are not easily coated with other anti-rust coatings;
2. Appearance is transparent, you can understand the package's content and its surface shape without having to remove the package;
3. Good flexibility, packaging is not easy to damage;
4 can seal welding, good sealing;
5. Easy to operate, can save the process of oiling before packaging or cleaning after unsealing, and has the characteristics of reducing the cost of packaging equipment;
6. From the perspective of the entire rust-proof packaging, it is much more economical than the oil sealing method;
7. Long rust-proof period, no need to change the packaging in 2~5 years, and some can seal for more than 10 years without rust;
8. The appearance of the packaging is exquisite, and different colors and specific logos can be used according to the different requirements of users;
9. Can be used for rust-proof packaging of oil-repellent products;
10. Easy to recycle, save energy, and be environmentally friendly.
Fourth, the scope of application
Vapor-phase anti-rust plastic film can meet the different specifications of metal products packaging, as small as a few millimeters, as large as the entire aircraft can be packaged. Because of the wide range of products that use VCIF for rust-proof packaging, it has achieved excellent anti-rust effect for more than 2 years. (Shenyang anti-rust packaging materials company feeds) ("Business Express")
Vapor-phase anti-rust plastic film (abbreviated as VCIF) is a type of protective inner packaging material made by adding a vapor phase inhibitor (VCI) to a plastic film in a certain manner. At present, Japan and South Korea all produce VCIF products.
Second, vapor phase rust-proof plastic thin protective mechanism
VCIF is a plastic film containing a vapor phase corrosion inhibitor and thus has the dual role of a vapor phase corrosion inhibitor and a plastic film.
The key technology and main role of VCIF is the role of vapor phase corrosion inhibitor technology. The VCI that exists in the plastic film is combined with plastic with weak binding force. Under the natural environment of temperature and humidity, the VCI vaporizes slowly with a certain vapor pressure, and the inhibitor vapor slowly fills the packaging space and is adsorbed on the metal surface. , And react under the water vapor to release corrosion-inhibiting groups. This corrosion-inhibiting group acts as an anti-corrosion agent by changing the pH of the metal surface, forming a hydrophobic film on the surface and forming a dense and purified film with the metal.
In addition, another feature of VCIF is the high barrier property of plastic film. As a VCI carrier, the plastic films include polyethylene, spear propylene, ethylene, vinyl alcohol copolymer (EVOH), etc. The film can effectively prevent corrosive media such as hydrogen sulfide, sulfur dioxide, carbon dioxide, water vapor, salt spray, etc. at a certain thickness. Oxygen, dust, etc. enter the packaging space, thereby providing shielding protection.
Third, the characteristics of vapor phase rust-proof plastic film
1.VCI steam is not permeated by holes, so it is most suitable to be made of unshaped, non-planar and complex surface parts and combinations that are not easily coated with other anti-rust coatings;
2. Appearance is transparent, you can understand the package's content and its surface shape without having to remove the package;
3. Good flexibility, packaging is not easy to damage;
4 can seal welding, good sealing;
5. Easy to operate, can save the process of oiling before packaging or cleaning after unsealing, and has the characteristics of reducing the cost of packaging equipment;
6. From the perspective of the entire rust-proof packaging, it is much more economical than the oil sealing method;
7. Long rust-proof period, no need to change the packaging in 2~5 years, and some can seal for more than 10 years without rust;
8. The appearance of the packaging is exquisite, and different colors and specific logos can be used according to the different requirements of users;
9. Can be used for rust-proof packaging of oil-repellent products;
10. Easy to recycle, save energy, and be environmentally friendly.
Fourth, the scope of application
Vapor-phase anti-rust plastic film can meet the different specifications of metal products packaging, as small as a few millimeters, as large as the entire aircraft can be packaged. Because of the wide range of products that use VCIF for rust-proof packaging, it has achieved excellent anti-rust effect for more than 2 years. (Shenyang anti-rust packaging materials company feeds) ("Business Express")