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Detailed introduction to VCI rust preventive paper
Publication Time:
2025-03-19 13:40
VCI (Volatile Corrosion Inhibitor) paper is a special packaging material that protects metals from corrosion by releasing volatile corrosion inhibitor molecules (VCIs). Here is a detailed introduction to VCI paper:
1. Working Principle
Volatile Corrosion Inhibitor Molecules VCI paper contains special chemical additives. These molecules slowly volatilize at room temperature, forming an invisible protective layer that adsorbs onto the metal surface.
Barrier Effect The inhibitor molecules react with moisture and oxygen in the air, inhibiting electrochemical corrosion and neutralizing corrosive gases (such as H₂S, SO₂).
2. Main Advantages
No Surface Treatment Required Metal parts do not require oiling, painting, or degreasing; they can be used directly for rust prevention.
Long-lasting Protection Depending on the ambient temperature and humidity, the rust prevention effect can last for months or even years.
Environmentally Friendly and Safe Complies with environmental standards such as RoHS and REACH.
Easy to Use It can be cut and folded to suit metal parts of complex shapes.
Clean and Residue-Free The metal surface does not need to be cleaned after opening; it can be used directly.
3. Application Scenarios
Metal Processing and Transportation Such as automotive parts, precision instruments, molds, bearings, hardware tools, etc.
Long-term Storage Such as military equipment, aviation components, medical equipment, electronic components, etc.
Export Packaging Preventing corrosion in humid environments during sea transport or long-term storage.
4. Common Types
Vapor-phase Corrosion Inhibitor (VCI) Paper Forms a rust-preventing atmosphere in an enclosed space through volatile molecules, suitable for bulk packaging.
Contact-type Corrosion Inhibitor Paper Requires direct contact with the metal surface, suitable for single-piece or small-batch packaging.
Reinforced Corrosion Inhibitor Paper Contains a higher concentration of VCI, suitable for high-humidity or highly corrosive environments.
5. Precautions
Packaging Seal Better results are achieved in sealed containers or bags to prevent the VCI molecules from dissipating too quickly.
Humidity Control Excessive environmental humidity may affect the rust prevention effect. It is recommended to use it with a desiccant.
Metal Compatibility The compatibility of the VCI components with the metal material (such as copper and aluminum) needs to be confirmed.
Storage Conditions Unused VCI paper should be stored in a dry and cool place, away from other chemicals.
6. Purchase Suggestions
According to Metal Type Different metals (iron, copper, aluminum) require different VCI formulations.
Environmental Adaptability High-concentration or reinforced VCI paper should be selected for high-temperature and high-humidity environments.
Supplier Selection Prioritize brands with SGS, CTI, or other testing certifications to ensure stable rust prevention effects.
VCI paper, with its high efficiency and environmental friendliness, has become an important solution in the field of metal rust prevention, especially suitable for scenarios with high requirements for cleanliness and ease of operation.
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