VCI is the generic term for “volatile corrosion inhibitor” also known as “vapour corrosion inhibitor”. We have posted many technical articles on our blog about various types of VCI products and VCI packaging so we thought it would be a good idea to explain exactly what VCIs are and how they work.
First off – what IS a Volatile Corrosion Inhibitor? Simply put they are chemical compounds that can reduce the rate of corrosion of ferrous metals like steel and nonferrous metals like copper and alloy. VCIs can be incorporated into different materials and come in various guises depending on the application they are to be used for including films, papers and cardboard and liquid corrosion inhibitors.
You will find information and guides to the various types of VCI formulations on our website. VCI compounds comprise several different chemicals but they do NOT clean off rust that has already formed.
VCIs are widely used in packaging to protect metal parts during storage and transportation. Other uses include protection of electrical installations, storage tank liners and even the interior of large enclosed spaces.
So how does a Volatile Corrosion Inhibitor work?
- The VCI compounds emit vapour molecules from the carrier material (paper, film, bag etc)
- The atmosphere becomes saturated with VCI.
- The VCI compounds are attracted to the surface of the metal and bonds to it.
- The VCI molecules migrate into hard to reach areas on even the most complex shapes.
- This affects the electro-chemical reaction and forms a protective layer on the metal surfaces, which greatly reduce the possibility of rust and corrosion.
How long does a Volatile Corrosion Inhibitor work? The VCI can protect for several years depending on many factors including temperature, storage conditions, type of metal and other packaging. It is therefore important to use the correct VCI product for your particular requirements and Technology Packaging’s team can advise you on your packaging.
Where can I find more information? Help and advice is only a phone call away and will cost you nothing! Our complete range of specialist corrosion preventive packaging uniquely provides us with the ability to give you the best solution for your business.
If you have a packaging problem you can Telephone: +44 (0)20 3598 1919 Email: inbox@technologypackaging. com Find further information Compare VCI Products
