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Nitric acid and pvdf

thread334-440527

Nitric acid and pvdf

Nitric acid and pvdf

(OP)
Does nitric acid diffusion into Polyvinylidene Fluoride affect the mechanical properties of the plastic?
1) Is Polyvinylidene Fluoride chemically compatible with Nitric acid 45 % at 70 C?
2) And, will it diffuse and affect its mechanical properties?

RE: Nitric acid and pvdf

The book Chemical Resistance, Volume 1 - Thermoplastics, Second Edition says that PVDF exposed to 45% nitric acid at elevated temperature has a resistance of 8. That means 90-94% retention of mechanical properties and no substantial change in dimensions or appearance. They define elevated temperature as tests done at 45°C and above.

Chris DeArmitt PhD FRSC
President

Plastic materials consultant to the Fortune 100
Creating New Materials - Problem Solving - Innovation Keynotes - Expert Witness
www.phantomplastics.com

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