The new type of anti-rust material represented by vci anti-corrosion film-vapor phase anti-corrosion material products uses the VCI corrosion inhibition principle to exert its effects.
To use it well, it is necessary to understand its essence and combine The five major elements that can further understand its characteristics to make it play a better anti-rust effect.
The five major factors that affect the function of vapor phase anti-corrosion materials are, in order, the induction period, the amount of anti-corrosion and corrosion inhibitors, the tightness of the package, temperature, and humidity.
When the protected workpiece is placed in the packaging space under the action of the gas phase corrosion inhibitor, it takes a period of time from the volatilization of vinyl chloride gas to the concentration of vinyl chloride required to form a protective layer sufficient to inhibit corrosion on the surface of the workpiece.
This period is called the induction period. The induction period is related to the vapor pressure of the corrosion inhibitor, the relative sealing performance of the package, the relative spatial distance between the corrosion inhibitor and the workpiece, and the material of the workpiece.
In actual use, if rust occurs due to the long induction period, a high vapor pressure composite corrosion inhibitor can be used, or physical moisture absorption methods such as dry air can be added to the packaging space to solve the problem.
The amount of rust and corrosion inhibitors used varies with the airtightness of the package and the regulations during the rust prevention period.
The long-term induction period related to the characteristics of the vapor phase corrosion inhibitor is very low, slow evaporation, and anti-corrosion.
The rust effect period is short, but the early anti-rust properties are poor, which is very easy to cause the risk of unsuccessful anti-rust.
The short induction period of the corrosion inhibitor has strong anti-rust in the early stage, and the effective period of anti-rust is very short.
Manufacturing, storage, transportation, and other long-term rust prevention targets require correct understanding and cognition ability.
VCI vapor phase rust prevention products use compound corrosion inhibitor secret recipe scientific research production technology, corrosion inhibitor demand and cost, A dynamic equilibrium relationship is created during the appropriate induction period.
Due to poor airtightness and high loss rate, it also stipulates that the anti-rust period is long and corrosion inhibitors are often used.
