PVDF and PVDF: The Versatile and Viable Material Choice

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Additionally, chlorine and chlorinated compounds are aggressive to many polymers, ultimately leading to corrosion-induced stress cracking. PVDF is not attacked by chlorine to a great extent, and is often used for long-term handling of chlorinated chemicals. In bleach applications where the chlorinated compound is also blended with a caustic solution that increases pH level, PVDF copolymers are preferred because the softer and more flexible nature of this technology offers better overall resistance to any potential cracking over time.

Metals Preparation and Mining

In the metals industry, various acids that include strong ones like hydrofluoric, hydrochloric, sulfuric, nitric, chromic, etc., are used to clean, treat/prepare or separate the final product. The concentrations of these chemicals can vary throughout the process; temperatures tend to be elevated; and mixtures of acids are common. This combination of variables makes it difficult to find one material to meet the needs for handling the process and waste chemicals.

PVDF and PVDF copolymers extend the temperature limits of the equipment and ensure protection from upset conditions encountered, should the blending of chemicals create aggressive by products that would present problems for other potential material choices.

Fuel Formulations

In recent years, fuels are getting more and more complicated in terms of formulation. Gasoline, at one time, was considered simple, but now there is diesel fuel, alcohol blends, ether additives for octane adjustment, and biodiesel. In underground transport and holding systems, it is expected that the installations will last for years without the need for replacement or repair.

While these versions of fuel can usually be handled by relatively less expensive materials, each different fuel variation poses a potential disaster, should the line be required to switch fuel type at some point.

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